U.S. patent number 3,879,799 [Application Number 05/455,307] was granted by the patent office on 1975-04-29 for multidirectional suspension system for operable partitions.
This patent grant is currently assigned to Hough Manufacturing Corporation. Invention is credited to Charles E. Williams.
United States Patent |
3,879,799 |
Williams |
April 29, 1975 |
MULTIDIRECTIONAL SUSPENSION SYSTEM FOR OPERABLE PARTITIONS
Abstract
A multidirectional suspension system for operable partitions
comprising an overhead track defining a pair of vertically spaced
rollerway defining ledges disposed on either side of the track, and
carriers for suspending the partition panels from the track, with
each carrier being in the form of a pendant bolt operating between
the track ledges and having coaxially journaled thereon for
rotation thereabout a pair of discs each defining a downwardly
facing load support side surface, and with the load support side
surfaces of one of the discs riding on one of the ledges free of
contact of the other ledge, and the other disc load support side
surface riding on the other of the ledges free of contact of the
first ledge. The track can have cross-over intersections,
T-intersections, and right angle and Y-turns for ready maneuvering
of the panels as desired, and without the need for switches, with
said ledges and guidance ledges opposing them engaging guidance
elements on the carrier, to maintain the individual carriers
properly centered when moved about intersections and turns.
Inventors: |
Williams; Charles E.
(Janesville, WI) |
Assignee: |
Hough Manufacturing Corporation
(Janesville, WI)
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Family
ID: |
26999347 |
Appl.
No.: |
05/455,307 |
Filed: |
March 27, 1974 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
Issue Date |
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356713 |
May 3, 1973 |
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Current U.S.
Class: |
16/89; 16/95R;
16/106; 104/94; 16/104; 16/107 |
Current CPC
Class: |
E05D
15/0613 (20130101); E05Y 2900/142 (20130101); Y10T
16/384 (20150115); Y10T 16/3831 (20150115); Y10T
16/376 (20150115); Y10T 16/3837 (20150115); Y10T
16/359 (20150115) |
Current International
Class: |
E05D
15/06 (20060101); E05d 013/02 () |
Field of
Search: |
;16/87R,95,87.4R,88,89,96R,97,103,104,106,107,105 ;49/411
;104/94 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
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1,908,970 |
|
Sep 1970 |
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DT |
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1,189,888 |
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Mar 1965 |
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DT |
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Primary Examiner: Krizmanich; George H.
Attorney, Agent or Firm: Mann, Brown, McWilliams &
Bradway
Parent Case Text
This application is a continuation-in-part of my application Ser.
No. 356,713, filed May 3, 1973 (now abandoned).
Claims
I claim:
1. In an operable panel type top supported partition arrangement
for temporarily subdividing room space including a plurality of
discrete panels, an overhead track system from which said panels
are suspended for movement between a storage position and selected
wall forming positions within the room space, with the respective
panels each being suspended from the track system by a pair of
carriers supporting the panel adjacent the side edges of same, and
with the track system defining one or more right angle turns and
intersections over which the carriers of at least some of the
respective panels are to move when being moved between said
positions, the improvement wherein:
said track system comprises a plurality of track sections assembled
in end to end relation for transfer of the carriers therebetween
for moving the panels between their said positions,
with said track sections each defining a trackway including a pair
of vertically spaced rollerway defining ledges disposed one on
either side of the respective track sections and an operating slot
between said ledges along which the carriers supported by the
respective track sections move when the panel supported thereby is
moved along such track section,
said ledges of the respective track sections each defining an
upwardly facing load support surface,
said carriers each comprising:
a vertical support member disposed between said ledges of the track
section supporting the respective carriers and defining a vertical
axis extending longitudinally of same,
means for anchoring the respective support members to the panel the
respective carriers support,
each of said support members having coaxially journalled on same,
in vertically spaced relatioon, and for rotation about said axis, a
pair of horizontally disposed discs,
with each of said carrier discs defining a downwardly facing load
support surface,
and with said surface of the upper of said discs of the respective
carriers riding on said surface of the upper of said trackway
ledges on one side of said operating slot and said surface of the
lower of said discs of the respective carriers riding on said
surface of the lower of said trackway ledges on the other side of
said operating slot,
said surfaces of said discs being of substantially identical
frusto-conical configuration at a flat angle relative to the
horizontal,
and said surfaces of said ledges having downward, oppositely
directed angulation transversely of said track sections that
complements the angulation of said disc surfaces,
whereby said support member of each of said carriers is vertically
suspended from the track section supporting same and said
angulation of said surfaces effects a centering of said support
members within said operating slot under the action of gravity,
with said discs making a line type rolling contact with their
respective ledge supporting surfaces,
with said upper of said carrier discs being free of engagement with
the trackway on the other side of said operating slot and the lower
of said carrier discs being free of engagement with the trackway on
said one side of said slot, whereby said discs roll in opposite
directions on the respective ledge surfaces as the panel supported
thereby is moved longitudinally of the trackway,
said ledges underlying said discs in proportion to their radii for
maintaining said carriers supported within the trackway when
crossing the turns and intersections by engagement of said discs
with said ledges,
those of said track sections defining the right angle turns and
intersections of the track system further defining on said other
side of said operating slot a masking ledge at the level of and
opposing said lower trackway ledge thereof but spaced therefrom by
said operating slot,
said ledges at and across the right angle turns and intersections
being disposed in close fitting guiding relation to the support
members of the respective carriers up to the intersecting operating
slots of the turns and intersections involved for maintaining same
centered relative to the operating slots as the turns and
intersections,
whereby said discs in passing through said intersections tend to
drop a perceptable amount when centered at the intersection, but
are retained within the trackway, for providing an indication of
their position therein, and the configuration of said disc and
ledge surfaces and the rolling action of said discs along said
ledges and across the turns and intersections permits ready camming
of the respective discs out of and away from such intersections and
turns.
2. The improvement set forth in claim 1 wherein:
said angulation of said disc and ledge surfaces is on the order of
10.degree..
3. The improvement set forth in claim 1 wherein:
said discs define a cylindrical rim portion,
said ledges of the respective track sections merging into a
vertical trackway wall at their outer margins,
said ledges of the respective track sections being spaced apart to
permit said roller rim portions to ride on the respective vertical
trackway walls on application of forces to the respective panels
acting laterally thereof at locations spaced from intersections of
said operating slot at the turns and intersections.
4. The improvement set forth in claim 1 wherein:
said carrier support members each include a guide element
interposed between the masking ledge and said lower trackway ledge
adapted to be engaged thereby on passing of the carrier through the
turns and intersections.
5. The improvement set forth in claim 4 including:
a guide ledge on said other side of the operating slot spaced from
and opposing said upper trackway ledge by said operating slot,
said carrier support members each including a second guide element
interposed said guide ledge and said upper trackway ledge adapted
to be engaged thereby on passing of the carrier through the turns
and intersections,
said masking and guide ledges extending the lengths of said track
sections.
6. The improvement set forth in claim 1 wherein:
in at least some of said track sections, said upper and lower
rollerway defining ledges are at opposite sides of the trackway
from the location of said upper and lower rollerway defining ledges
in others of said track sections.
7. The improvement set forth in claim 1 wherein:
said ledges underlie said discs a distance that at least equals
one-half the radius of said discs.
8. The improvement set forth in claim 5 wherein:
said discs are journaled on the respective support members by
thrust bearings,
and wherein said support membes each comprise a pendant bolt,
and including means for clamping said thrust bearings and guide
elements together.
9. The improvement set forth in claim 1 including:
seal means interposed between said panels and the undersides of
said trackway section lower ledges for sound deadening
purposes.
10. The improvement set forth in claim 9 including:
seal means carried by said panels at their lower ends for sound
deadening purposes.
Description
This invention relates to a multidirectional suspension system for
operable partitions and more particularly, to operable partition
arrangements involving discrete panels suspended from an overhead
track that are adapted to be moved along the track between the
point of use and a storage area that may be removed from the space
to be subdivided.
In operable partition arrangements intended for use in hotels,
clubs, convention halls, and the like, for the temporary
subdivision of a large room space into small rooms, it is usually
required that the partition suspension arrangements provide for
movement of the panels between the point of use and the storage
area that is removed from the space being subdivided. This involves
an overhead track arrangement that commonly includes right angled
turns, crossover and right angle intersections, and the like.
Panels for installations of this type are large and heavy, and
where the installation is for situations comparable to the
hospitality market, they have to be arranged acoustically for
minimum transmission therethrough, which adds further to the weight
of the individual panels.
Panels for operable partitions of this type are usually each
separately supported from the track in unhinged relation and by a
pair of carriers located adjacent either side edge of the
respective panels. The individual panels are moved between points
of storage and points of use by being moved in their planes along
the track straightaways, and around right angle or wide turns and
across intersections as the track layout requires. Some
installations require that as part of the storing of the panels,
they be moved in a path that is perpendicular to their respective
planes.
A significant problem with operable partition arrangements of this
type is providing for ready moving of the panels along the track
and through the track intersections, right angle turns, etc. One
type of the prior art carrier employed for this purpose uses a
trolley arrangement in which two pairs of wheels are provided in
which the wheels of one pair are at right angles to the wheels of
the other pair, and all the wheels operate about horizontal axes.
Carriers of this type present the problem that at through
intersections, the wheels drop into the track intersecting slots
involved; since the individual panels are quite heavy, it is
therefore difficult to move them through the intersection and about
a right angle turn at the intersection.
Another type of prior art carrier is in the form of a glide disc or
puck that is to slide along the track. The disc of the carrier is
horizontally disposed so that it is supported between opposed
coplanar track flanges between which the carrier support member
extends down to the panel for connection therewith. The glide disc
cannot rotate as the carrier is moved, since the opposite edges of
the guide disc slidably engage the opposed track flanges, so the
operator has to contend with sliding friction in maneuvering the
panels, with the result that, since the panels of this type are so
heavy, movement of same even along track straightaways is difficult
and wearing on the carriers, track and operator.
In another disc type carrier arrangement, the disc is equipped with
a number of bearing balls that are adapted to ride along the track.
Experience has shown that the bearing balls of this type of carrier
do not roll as intended, but rather slide along the track, due to
friction forces acting between the individual balls and the carrier
disc as the resullt of the weight suspended from the disc.
Another familiar difficulty with operable partitions of this
general type is that extra equipment is required in connection with
the track, such as the familiar crossover switches, pivot switches,
and glide switches. Track curves, which materially add to the
expense of the track, are also commonly required.
The principal object of this invention is to provide an operable
partition suspension arrangement which permits both easy movement
of the heavy panels along track straightaways and easy negotiation
of track intersections, right angle and Y-turns, and the like,
without requiring any form of track switch.
Another principal object of the invention is to modify the familiar
slide disc or puck type carrier so that only rolling friction is
involved in moving the panels along the track.
Other objects of the invention are to provide an operable partition
suspension arrangement that is readily adapted for tracks of both
the recessed or dropped ceiling type, that provides for a
simplified track and carrier arrangement of few and simple parts,
and that is economical of manufacture, convenient to install and
use, and long lived in operation.
In accordance with this invention, the track is in the form of a
pair of vertically spaced rollerway defining ledges disposed on
either side of the track, and the panels are supported from the
track by a special carrier. Each carrier comprises a pendant bolt
operating between the track ledges and having coaxially journaled
on same for rotation thereabout a pair of discs or pucks each
defining a downwardly facing load support side surface. The
arrangement is such that the load support side surface of one of
the discs rides on one of the ledges free of contact of the other
load support ledge, and the other disc load support side surface
rides on the other of the load support ledges free of contact of
the first load support ledge. The result is that the discs are free
to rotate and thus roll in opposed directions along the respective
track ledges supporting same. The track ledges and disc load
support side surfaces are angled in a load centering complementary
manner for effective load distribution purposes, and to aid in
negotiating the track intersections and turns. The track includes
guidance ledges opposing the rollerway defining ledges, with both
types of ledges being proportioned to provide full lateral guidance
for the carriers at intersections and turns.
Other objects, uses and advantages will be obvious or become
apparent from a consideration of the following detailed description
and the application drawings.
In the drawings:
FIG. 1 is a diagrammatic side elevational view of an operable
partition arrangement of the individual panel operated type,
showing several discrete operable panels suspended in a manner
contemplated by this invention, with the track being shown in
vertical section;
FIG. 2 is a diagrammatic perspective view showing one of the panels
as suspended in accordance with this invention moving around a
track right angle intersection arranged in accordance with this
invention;
FIG. 3 is a diagrammatic vertical section through one of the panels
illustrating more particularly the details of the track and carrier
as arranged in accordance with this invention;
FIG. 3A is a fragmental cross-sectional view taken substantially
along line 3A--3A of FIG. 3;
FIG. 4 is an enlarged view of the sectional view showing of FIG. 3
relative to the track and carrier of this invention, showing also
the carrier discs in section;
FIG. 5 is a plan view of a track crossover intersection in
accordance with this invention;
FIG. 6 is a plan view of a track right angle intersection in
accordance with this invention; and
FIG. 7 is a plan view of a track right angle turn in accordance
with this invention.
However, it is to be understood that the specific drawing
illustrations provided are supplied primarily to comply with the
requirements of the patent laws, and that the invention is
susceptible of various modifications that will be obvious to those
skilled in the art, which modifications are intended to be covered
by the appended claims.
GENERAL DESCRIPTION
Reference numeral 10 generally indicates an operable partition
arrangement of the individual operated panel type, arranged in
accordance with this invention, which comprises a plurality of
partition panels 12 each suspended from a track 14 by a pair of
carriers 16 connected adjacent the respective side edges 18 and 20
of the respective partition panels.
Referring to FIGS. 3 and 4, in accordance with this invention, the
track 14 is formed to define on either side of same a pair of
vertically spaced rollerway forming ledges 22 and 24, which are
spaced apart horizontally to define between them an operating slot
26 along which the respective carriers 16 move.
The respective carriers 16 each comprise an upper load support disc
28 and a lower load support disc 30, with the discs 28 and 30
preferably, but not necessarily, being of identical construction;
the discs 28 and 30 are coaxially journaled on a pendant bolt 32
that is suitably connected the partition panel it supports.
The disc 28 is formed with a lower load support frusto-conical side
surface 34 and the disc 30 is formed with a lower load
frusto-conical support side surface 36. As shown in FIGS. 3 and 4,
and particularly in FIG. 4, the load support surface 34 rides on
rollerway surface 38 of the upper ledge 22, while the load support
surface 36 of the disc 30 rides on rollerway surface 40 of the
lower ledge 24.
In the specific form of track shown, the ledge 22 is opposed by a
guidance ledge 42, while the ledge 24 is opposed by guidance ledge
44. However, the ledges 42 and 44 serve no carrier support
functions, as it is intended that the discs 28 and 30 be supported
on the respective rollerway surfaces 38 and 40 so as to be spaced
above the ledges 42 and 44, as clearly shown in FIG. 4. Ledges 42
and 44 come into play at intersections and corners of the type
shown in FIGS. 5-7, with the ledges 22, 24, 42 and 44 being formed
for the close fitting relation with the carrier that is indicated
in FIGS. 3 and 4 for guidance and centering purposes.
The result is that as the individual panels 12 are moved along the
track 14, disc 28 is in rolling engagement with rollerway surface
38, and disc 30 is in rolling engagement with rollerway surface 40.
The discs 28 and 30 thus rotate in opposite directions about the
pendant bolt 32 to provide a carrier track engaging arrangement
that is essentially of the rolling friction type.
As indicated in FIGS. 3 and 4, the rolling disc or puck load
support surfaces 34 and 36, and the corresponding rollerway
surfaces 38 and 40 they respectively engage, are angled in a
complementary manner relative to the horizontal. This angulation is
preferably on the order of 10.degree., which seems to be most
effective for load distribution and centering functions, and for
effecting rotation of the carrier discs as the panel is moved down
the track.
It is pointed out that it is immaterial which side of the track the
respective rollerways 38 and 40 are on. Thus, in the showing of
FIGS. 3 and 4, the ledge 22 could be in the place of ledge 42, and
the ledge 24 could be in the place of ledge 44. In the specific
embodiment illustrated, the ledges 22 and 24 are of somewhat
thicker dimension than their opposing ledges 42 and 44,
respectively, to space the respective discs 28 and 30 above the
respective ledges 42 and 44, but the same effect may be achieved by
other suitable means, as by eliminating the angulation of the
upwardly facing surfaces of the ledges 42 and 44.
In utilizing the invention, track having the cross-sectional
configuration shown in FIGS. 3 and 4, is applied to the building
ceiling in one of the familiar flush or suspended mounting
arrangements (a flush mounting arrangement is diagrammatically
illustrated) with the track extending between the point of storage
and point of use of the panels. In many installations for use in
clubs, hotels, convention halls, and the like, it is desirable to
have storage of the panels in remote locations so that the track,
in addition to its usual straightaway portions, will include
crossover intersections, right angle intersections, right angle
turns, and the like, as may be necessary due to the building
construction involved to move the individual panels between point
of storage and point of use.
In the showing of FIG. 5, a track intersecting crossover assembly
50, embodying the principles of this invention, is illustrated,
while in FIG. 6 a right angled track intersection of "tee" assembly
52 is illustrated, similarly embodying the principles of this
invention. In FIG. 7 a 90.degree. corner or right angled turn
assembly 54 embodying the principles of this invention is
illustrated.
The assemblies 50, 52, and 54 have track ledges 22, 24, 42 and 44
formed in same which serve the same purposes described in
connection with the showing of FIGS. 3 and 4. Of course, Y-turns
and other track equipment of this general type may be similarly
formed as will now be apparent. The cooperation of the ledges 22,
24, 42, and 44, discs 28 and 30, and the carrier pendant bolt, that
is indicated by the proportioning and close fitting relationships
indicated in FIGS. 3 and 4 is especially important in providing
ease of movement of carriers 16 across intersection and right
angled turn assemblies.
The assemblies 50, 52 and 54 and others that may be required are
assembled as part of the track 14, with the individual panels 12
suspended from the track by employing the carriers 16 that are
illustrated. As is conventional with operable partitions of the
type illustrated, the panels 12 are unhinged and the carriers 16
are applied to a panel and located adjacent their respective edges
18 and 20 of the respective panels.
Movement of the individual panels along the trackway 14 is easy as
there is a rolling friction type engagement between the panel
carrier discs 28 and 30 and the trackway. For instance, it has been
found that with panels having a weight of 8 pounds per square foot
(of room space vertically subdivided), only a 4 pound thrust is
required to start the panel moving, and after the panel is once
moving, only a 2 pound thrust is required to keep it moving; the
panel may be moved and kept moving by gently urging same in a
forward direction adjacent the lower end of the panel, something
not possible where the carriers make sliding engagement with their
trackway.
The manner of moving the panels along track 14 for the individual
operated type panels will be immediately apparent; thus, panels 12
may be readily moved in their planes along track straightaways, and
at track intersections or turns, the panels may be moved straight
across the intersection, or manipulated to roll the leading and
trailing carriers into the track sections that define the new
direction of movement desired (as illustrated in FIG. 2 in
connection with the track crossover intersection there illustrated)
with complete assurance that the carriers 16 will be fully
supported and guided in moving through same, even though the
geometry of the track at intersections and right angled turns
widens the space that the rolling discs 28 and 30 operate in.
SPECIFIC DESCRIPTION
The trackway 14 as specifically illustrated is shown to be of the
flush mounted type, but, of course, it will be immediately apparent
that the principles of the invention are equally applicable to
suspended mount type track applications.
In the form shown, the track along its straightaway may be in the
form of lengths of a channel shaped member 60 disposed in end to
end relation and defining a web portion 62 and spaced flange
portions 64 and 66 that respectively are formed to define the
respective ledges 22, 24, 42 and 44. The channel member 60 also
defines the upwardly directed extensions 76 and 78 that define the
upwardly facing abutment portions 80 and 82 against which the
mounting channel member 84 is secured by a bolt 86 applied to an
attachment plate 88 formed with a threaded opening 90 for
threadedly receiving the bolt 86. The channel member 84 is an
entirely conventional component formed with suitable openings to
receive suspension bolts 92 and 93 that suspend the channel member
84 from the ceiling in an entirely conventional and well recognized
manner.
The track flange portions 64 and 66 also each define a pair of
upwardly directed projections 94 and 96, respectively, to which are
applied in a conventional manner the respective trim pieces 98 and
100 that support suitable ceiling panels 102.
The track 14 may be formed from any suitable material, such as
steel or aluminum or suitable alloys of same. In one embodiment of
the invention a suitable aluminum alloy is employed and the track
lengths are extruded to the transverse cross-sectional shape shown
in FIGS. 3 and 4. In the form shown, the ledges 22 and 44 of the
track flange portion 64 are defined by parallel cross flanges 106
and 108, while in the track flange portion 66, the ledges 42 and 24
are defined by cross flanges 110 and 112 which respectively oppose
the respective cross flanges 106 and 108. Flanges 106 and 112 are
proportioned so that the load bearing surfaces 34 of the disc 28
and 30 will be above the respective flanges 108 and 110
approximately one-sixteenth of an inch when the individual panels
are suspended in their operating positions.
The crossover assembly 50 generally comprises a base plate 120 to
which are suitably secured four short sections 122, 124, 126 and
128 of the trackway 14 that are suitably mitered as indicated at
130 for convergence on the center point 132 of the intersection.
The track sections 122, 124, 126 and 128 are secured to the base
plate by employing attachment plates and bolts (not shown) similar
to plate 88 and bolt 86 of FIGS. 3 and 4. Base plate 120 is, of
course, suitably suspended in operating relation, as by bolts
applied to its bolt holes 129. The attachment assembly 50 is not
shown in FIG. 2 as that figure is intended to be a diagrammatic
illustration only.
Of course, the straight sectins 133 of track that are shown in
broken lines in FIG. 5 are arranged to have their ends 134 in close
working relation to the squared ends 136 of the sections 122, 124,
126 and 128, respectively.
In the showing of FIG. 6, the right angle intersection assembly 52
comprises a base plate 140 to which are affixed a straight section
142 of the track 14 that is notched as at 144 to receive in right
angled relation thereto short track section 146. The adjacent
straight track sections 148 have their respective ends 150 disposed
in close adjacency to the respective ends 152 of the sections 142
and 146. Of course, base plate 140 is suitably suspended to place
the sections 142 and 146 in horizontal alignment with the straight
track section 148, and track sections 142 and 146 are secured to
the base plate 140 in the same manner as described with reference
to assembly 50.
In the showing of FIG. 7, base plate 160 has affixed thereto track
sections 162 and 164 which have their ends 166 aligned with the
adjacent ends 168 of straight track sections 170. Again, base plate
160 is suitably secured or mounted in place to place the sections
162 and 164 in alignment with the straight track sections 170, and
track sections 162 and 164 are secured to plate 160 in the same
manner as described in connection with assembly 50.
In this connection, it is to be understood that the intersecting
and right angled turn assemblies shown in FIGS. 5 - 7 contemplate
track transverse cross-sectional configurations comparable to those
shown in FIGS. 3 and 4.
A further improvement that is indicated in FIGS. 5 - 7 is that it
is not essential in constructing a particular track circuit to be
sure that the flanges 22 and 24 of the intersecting track lengths
involved be on the same side of the track. For instance, in the
assembly 50 of FIG. 5, while the track sections 124 and 128 are
arranged so that their ledges 22 and 24 are aligned horizontally
and on the same side of the track, the track sections 122 and 126
have their ledges 22 and 24 on the opposite sides of the track
section; the latter is also true with regard to the track sections
involved in assemblies 52 and 54. The nature of the carrier discs
or pucks 28 and 30 and the guidance of ledges 22, 24, 42 and 44 on
carriers 16, as illustrated, is such that the carriers 16 readily
transfer between track section lengths regardless of which side, on
adjacent track lengths, the supporting track ledges 22 and 24 are
on.
It has also been found that with this invention, alignment of
adjacent track ends is not especially critical as reasonably close
adjacency and levelness will satisfy operating requirements.
Heretofore in suspending arrangements involving carriers of the
disc type, the fitting together or track joints has been quite
critical.
Referring now to the carriers 16, the disc or pucks 28 and 30 are
of identical construction and each comprises an annular body 180
shaped to define the load support surfaces 34 and 36, a
cylindrical, or substantially cylindrical, rim surface 182, and a
top side surface 184 that has the same angulation as the load
support surfaces 34 and 36 so that the surfaces 34 and 36 and 184
may be interchangeable. The disc body 180 is suitably recessed as
at 186 on either side of same to receive the respective thrust
bearing units 188 that may be of any conventional design, but which
in the form shown comprise a suitable housing 190 in which is
seated races 192 and 196 between which are interposed a plurality
of bearing balls 194, all arranged in any convenient and
conventional manner for thrust and radial bearing journaling
purposes. The inner races of the bearing units 188 suitably receive
the shank 198 of the pendant bolt 32.
The discs 28 and 30 are separated by annular guidance spacer ring
202, and below the lower disc 30 a second annular guidance spacer
ring 204 is applied against which nut 206 is drawn along the
threaded portion 208 of bolt shank 198 to draw the spacers and
discs together against the head 210 of the bolt 32. Nut 206
preferably is of a suitable self-locking type, although, of course,
any suitable way of locking the nut 206 in the desired operating
position of the discs 28 and 30 may be employed.
While the discs or pucks 28 and 30 are preferably formed from
nylon, delrin, or some other equivalent plastic material having
self lubricating characteristics, they also may be formed from
steel. Spacers 202 and 204 may be formed from the same
materials.
The angulation of the side surfaces 34, 36 and 184 of the discs or
pucks on the order of 10 degrees with respect to the horizontal (in
the operating position of the discs, which would be 10.degree.
relative to planes extending transversely of the bolt shank 198),
and the corresponding complementing angulation of rollerway
surfaces 38 and 40, is preferred as this angulation has been found
to work best from load distribution and load centering standpoints
as well as achieving full rotation of the discs as the carrier
moves down the track with minimum area of contact with the track.
The angulation of the disc surfaces indicated, and the
corresponding angulation of the track supporting ledges 22 and 24,
also serve a useful locating function in the area of intersecting
crossovers and right angle intersections as the discs tend to drop
slightly, under gravity, due to the geometry of the parts involved
(round discs bearing on quadrilateral, or partially quadrilateral
track intersections) when the discs become centered at the
intersection, thus signaling their location to the individual
moving the partition. The tapered configuration of the discs and
the rolling action of same that is involved permits ready shifting
of the individual carriers up and out of and away from the
intersection by having the discs roll and be cammed out of the
center of the intersection. The disc surfaces 34 and 36 have line
type contact with the respective surfaces 38 and 40 for effective
load transmittal purposes with minimum friction resisting
movement.
The panels 12 may be constructed in the manner that is bsically
similar to that described in Holloway U.S. Pat. No. 3,450,183, and
thus each panel comprises a frame 230 comprising a top frame member
232, spaced side members 234 (which are indicated only
diagrammatically in FIG. 3), and a bottom frame member 238, with
the top, bottom and side members being formed from extruded lengths
of aluminum or the like.
The upper and lower frame members 232 and 238 in the form
illustrated are of identical but inverted transverse
cross-sectional configuration (and thus are reversible), and each
is in the form of a channel-shaped element 240 defined by a central
web portion 242 and spaced vertically disposed side flange portions
244 and 246. The flange portion 244 defines a protuberant
projecting portion 250. Protuberant edge portion 248 defines a
mounting slot 252 while the edge portion 250 defines a mounting
slot 254. In the embodiment illustrated, there is operably
associated with the respective frame members 232 and 238, in
accordance with U.S. Pat. No. 3,755,968, the respective upper and
lower floating seal strips 260 and 262 which are identical in
nature. As disclosed in said U.S. Pat. No. 3,755,968, the strips
260 and 262 each comprise a strip 264 that is proportioned to
extend the length of the respective members 232 and 238 and defines
a seating wall portion 266 formed with longitudinally extending
edge portions 268 and 270 that are protuberant in nature and formed
to interfit with the respective slots 252 and 254 of the respective
members 232 and 238 in the manner indicated in FIG. 3. The
outwardly facing surfaces 272 of the ceiling wall portion 266 of
the strips 260 and 262 are adapted to engage the surface to be
sealed (that is, the ceiling or floor surface involved), while the
other side surface 274 has extending from same a pair of sealing
flaps or strip portions 276 and 278 that slidably engage the inside
surfaces 280 and 282 of the channel member respective flange
portions 242 and 246.
The frame members 232 and 238 are also each formed with an
appendage or extension structure 284 and 286 on either side of same
that extend laterally of the respective flange portions 244 and 246
and define the respective recesses 288 that receive the panel
covers 29 in accordance with the disclosure of said U.S. Pat. No.
3,450,185.
While the pendant bolts 32 of the respective carriers may be
secured to the respective panels in any suitable manner, in the
form shown, the upper seals 260 are suitably notched to receive the
respective bolts 32, and the bolt 32 of each carrier 16 has its
threaded shank portion 208 threadedly received in the upstanding
internally threaded tube 300 that is suitably fixed to the panel
frame member 232. In the form shown, the tube 300 has its lower end
302 affixed as by welding to a base plate 304 that is secured to
the underside of the web 242 of the frame member 232, as by
employing suitable bolts or screws 306, with the tube 300 extending
upwardly through the web 242 through suitable hole 308 formed in
same. Lock nut 310 threadedly received on the bolt shank portion
208 locks the pendant bolt 32 with respect to the tube 300 in the
desired position of adjustment to properly position the panel
relative to the track.
It is pointed out that, with regard to the panels 12, they may be
of any suitable construction, and, of course, mechanical seals
(which may be of the type disclosed in said U.S. Pat. No.
3,450,185) or conventional sweep seals may be employed instead of
the floating seal illustrated, with such seals being suitably
notched or opened to accommodate securement of the carrier pendant
bolts to the panel top frame member. Likewise, the pendant bolts 32
may be connected to the respective panels in any suitable manner,
although that illustrated is convenient for the specific type of
panel illustrated.
While the invention has been disclosed in connection with
individually operated panels, the invention is equally applicable
to operable partitions of the type disclosed in said U.S. Pat. No.
3,450,185, in which several of the panels are hinged together in
folding relation, and the panels are suspended by a single carrier
located at the mid portion of the panel. In such operable panel
arrangements, the track 14 and carriers have the same constructural
features as those that have been described and illustrated. In this
connection, it is pointed out that in accordance with this
invention, the track 14 and its slotway 26 (that the carrier
pendant bolts operate in within the track 14), the discs 28 and 30,
and spacer rings 202 and 204 are proportioned so that when lateral
loads are applied to the panel, the roller rim surfaces 182 will
bear and ride on the track inner vertical or upstanding wall
surfaces 320 or 322 (the ledges 22 and 24, and 42 and 44 where
present, being spaced apart sufficient to accommodate this),
depending on which direction the lateral thrusts are acting in.
Thus, in accordance with this invention, the carrier discs continue
to roll even under the application of lateral thrusts, such as what
might be experienced when hinged operable partitions are
unfolded.
It is also pointed out that the ledges 42 and 44 of the track 14
may be eliminated in straight track sections insofar as the
function of supporting the carriers 16 is concerned since they have
no carrier load support functions, although it is assumed that in
the illustrated embodiment, that ledges 42 and 44 are present in
straight track sections as a manufacturing convenience. However,
the lower ledge 44 is desirable from the standpoint of appearance
(it thus forming a masking flange) and in providing a ceiling
surface for the floating seal 260. Nevertheless, at track turns and
intersections it is desirable to retain the ledges 42 and 44 as
they serve important guiding and locating functions when the
carriers cross the turn or intersection, as will now be made
evident.
As will be apparent from the showing of FIGS. 3 and 4 of the
drawings, the inwardly projecting edges of the opposed pairs of
ledges 22 and 42, and 24 and 44, are in closely spaced, or close
fitting relation, to the carrier pendant bolt 32, and in the form
illustrated, with respect to its spacer rings 202 and 204, and from
the nature of the shaping of the parts shown in FIGS. 3 and 4, the
locating and guiding functions referred to involves physical
contact cooperation between the respective pairs of ledges 22 and
42, and 24 and 44, and the respective spacer rings 202 and 204, as
well as the shaping of the carrier disc surfaces 34 and 36 and the
cooperating ledge surfaces 38 and 40, in locating a carrier
relative to its supporting ledges 22 and 24 at turns and
intersections, so that the discs 28 and 30 of the respective
carrier 16 remain properly centered relative to the operating slot
26, whereby the discs 28 and 30 properly move across the
intersection or turn. As indicated by FIGS. 5- 7, at intersections
and right angled corners the geometric shapes involved in the track
result in one or both of the track vertical wall surfaces 320 and
322 of the intersecting track sections involved being void across
the intersection (compare FIGS. 2, 5, 6 and 7) between the mitered
corners that are necessarily involved at track intersections and
right angled turns for the surfaces (as indicated by the showing of
FIGS. 2 and 5 - 7). The diagonal spacings involved, for instance,
between such corners of the track surfaces 320 and 322 of the track
sections forming, for instance, assemblies 50, 52, and 54 that
necessarily exist at intersections and right angled turns (see
FIGS. 2 and 5 - 7) result in the roller or disc rim surfaces 182
being overly spaced from the track inner upstanding wall surfaces
320 and 322 so that lacking guiding cooperation of the respective
pairs of ledges 22 and 42, and 24 and 44 with the carrier, and
specifically with its spacer rings 202 and 204 (in the embodiment
illustrated) at intersections and right angled turns, the carrier
16 may otherwise shift sufficiently out of the desired central
alignment shown in FIGS. 3 and 4 (relative to the operating slot
26) to make difficult transfer of the carrier 16 over the
intersection or turn, and between intersecting operating slots 26,
and even result in jamming or dislodgement of the carrier. The
close fitting relation between the opposed pairs of ledges 22 and
42, and 24 and 44, relative to the carrier pendant bolt 32 that is
shown in the drawings thus places them for guiding relation to, and
guiding contact with, the respective spacer rings 202 and 204 when
the carrier 16 moves across portions of the trackway, such as at
intersections and turns, where one or both of the track walls
defining surfaces 320 and 322 is void (by the nature of the
intersection or turn geometry involved), and surfaces 320 and 322
are thus not present to restrain lateral shifting of the carrier
relative to the operating slot 26 that may be involved. Ledges 22,
24, 42 and 46 thus maintain the desired operating width of slot 26
across the intersections and turns where the track surfaces 320 and
322 are not present for engagement by the discs to serve this
function, thus insuring proper centering of the individual carriers
as they cross intersections and turns.
This proportioning of ledges 22, 24, 42 and 44 also brings the
inwardly directed edges of these ledges sufficiently close together
and under the respective discs 28 and 30 so that the discs 28 and
30 remain supported by the mitered portions of the ledges 22 and 24
at intersections and right angled turns, even though, as has been
indicated, the discs 28 and 30, and thus the individual carriers,
tend to drop slightly (under gravity) when centered at the
intersection, again due to the geometric shapes involved (round
discs 28 and 30 centered on and bearing against corner portions of
ledges 22 and 24 defining a quadrilateral (see FIG. 5) or partially
quadrilateral (see FIG. 6) openings at the mid point of the
intersection involved. In the showing of FIGS. 3 and 4, the
inwardly projecting edges of the opposed pairs of ledges 22 and 42,
and 24 and 44, extend under the respective discs 28 and 30 at a
distance that exceeds one-half the radius of the circumference of
the respective discs 28 and 30. It is preferred that such ledges
22, 24, 42 and 44 project under the discs 28 and 30 a distance that
at least equals one-half the radius of the respective discs; in any
event, a projection of the flanges 22, 24, 42 and 44 under the
discs 28 and 30 of the distance of one-fourth the radius of the
discs or less may result in the diagonal spacing of the ledge
corners at intersections exceeding the diameter of the discs 28 and
30, with the result that the carrier 16 would drop out of the track
through the intersection.
Thus, in accordance with this invention, it is critical that the
opposed pairs of ledges 22, 42 and 24 and 44 be present at
intersections and right angled turns, and have the close fitting
relation to the carrier pendant bolt, and the underlying relation
to the carrier discs that has been indicated.
It will therefore be seen that this invention provides a panel
suspension arrangement for operable partitions which insures that
the panels can be moved under relatively easy rolling friction
conditions, and which permits the panels to be moved around turns
and through inersections without requiring use of switches of any
kind. The suspension system permits the use of any desired type of
seal, whether of the sweep, floating, or mechanical type, and the
basic transverse cross-sectional shape of the track is the same for
all track sections whether straightaways or at intersections or
turns. Furthermore the same basic track section may be employed for
curved track where curved track is otherwise desired, although
track curves are not needed for the practice of this invention.
The carriers 16, in addition to providing a full rolling friction
type support for the panels under both vertical and lateral loads,
are of simplified construction requiring no separate frame as such,
since the pendant bolt also journals the carrier rolling discs or
pucks.
The foregoing description and the drawings are given merely to
explain and illustrate the invention and the invention is not to be
limited thereto, except insofar as the appended claims are so
limited, since those skilled in the art who have the disclosure
before them will be able to make modifications and variations
therein without departing from the scope of the invention.
* * * * *