U.S. patent number 3,630,560 [Application Number 05/088,685] was granted by the patent office on 1971-12-28 for surface-mounted nonhanded door holder.
This patent grant is currently assigned to Glynn Johnson Corporation. Invention is credited to Norman C. Atkins, Henry J. Miller.
United States Patent |
3,630,560 |
Atkins , et al. |
December 28, 1971 |
SURFACE-MOUNTED NONHANDED DOOR HOLDER
Abstract
The door holder is applicable, without alteration, to right- or
left-hinged doors, and includes an improved, manually operable
hold-open device which is selectively movable between operative and
inoperative positions by means of an easily accessible, actuator
which projects from the bottom of the door holder housing, said
actuator being rendered inoperative whenever the door is closed
thereby discouraging manipulation and misuse of the hold open
device by unauthorized personnel, pranksters, and the like.
Inventors: |
Atkins; Norman C. (Franklin
Park, IL), Miller; Henry J. (Lincolnwood, IL) |
Assignee: |
Glynn Johnson Corporation
(Chicago, IL)
|
Family
ID: |
22212819 |
Appl.
No.: |
05/088,685 |
Filed: |
November 12, 1970 |
Current U.S.
Class: |
292/270; 16/49;
292/278; 16/DIG.17; 292/DIG.19 |
Current CPC
Class: |
E05C
17/28 (20130101); Y10S 292/19 (20130101); Y10T
292/293 (20150401); Y10S 16/17 (20130101); Y10T
292/305 (20150401); Y10T 16/27 (20150115) |
Current International
Class: |
E05C
17/00 (20060101); E05C 17/28 (20060101); E05c
017/04 () |
Field of
Search: |
;292/293,270,268,269,262,272,274,275,278,DIG.19
;16/49,82,85R,85A,85C,85 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Wolfe; Robert L.
Claims
What is claimed is:
1. A nonhanded door holder for a door hinged for movement between
two extreme positions upon a door frame, comprising in combination:
an elongate hollow housing having opposite sidewall portions, a
bottom wall, a longitudinally slotted top wall portion, and
opposite end portions; a slider reciprocable lengthwise within said
housing; an elongate actuator arm having pivot means mounted upon
the slider and movable therewith lengthwise of said wall slot;
means for pivoting an end of said arm upon the door frame, whereby
hinged movements of the door are translated to reciprocative
movements of the slider within said housing; means for mounting the
housing upon the door with either sidewall portion of the housing
disposed substantially against a face of the door, means within
said housing including a single cam latch element manually
rotatable between an operative position at which the slider is
securely through releasably restrained against return movement when
the door is swung open, and an inoperative position at which the
slider is free of restraint against return movement when the door
is swung open; said cam element including an actuator portion which
extends through, and projects beyond the bottom wall of said
housing.
2. The combination as defined by claim 1, which includes means
operative to preclude the aforesaid manual shifting of said cam
latch element when the door is standing at one of its two extremes
of hinged movement.
3. The combination as defined by claim 2, wherein said one extreme
of hinged movement is the substantially fully closed position of
the door relative to the door frame.
4. The combination as defined by claim 2, wherein said one extreme
of hinged movement is the substantially fully open position of the
door relative to the door frame.
5. The combination as defined by claim 1, wherein the length of
said cam latch element is such that when rotated between operative
and inoperative positions the outer end thereof projects outwardly
through said wall slot beyond the top wall of the housing.
6. The combination as defined by claim 3, wherein the means
last-mentioned includes said actuator arm.
7. The combination as defined by claim 4, wherein the means
last-mentioned includes said slider.
8. The combination as defined by claim 5, wherein said cam latch
element is proportioned to extend through the housing slot to
strike and stop against said actuator arm when the door is
substantially fully closed.
9. The combination as defined by claim 7, wherein said cam latch
element is proportioned to strike and stop against said slider when
the door is substantially fully open.
10. The combination as defined by claim 2, wherein said means
last-mentioned is rendered inoperative by disposition of the door
to said one extreme of its movement.
11. The combination as defined by claim 1, wherein said housing
unaltered is mountable with its remaining sidewall portion disposed
substantially flatly against a face of the door.
12. The combination as defined by claim 11, wherein the housing
sidewall portions near the end portions thereof are provided with
identical apertures receptive of said mounting means.
13. A nonhanded door holder for a door hingedly mounted upon a
frame for movement between a fully open and a fully closed
position, said door holder comprising in combination: an elongate
hollow tubular housing having opposite sidewall portions, a
longitudinally slotted wall portion, and opposite end portions; a
slider reciprocable lengthwise within said housing; an elongate
actuator arm having pivot means mounted upon the slider and movable
therewith lengthwise of said housing slot; and means for pivoting
an end of said arm upon a door frame, whereby hinged movements of
the door are translated to reciprocative movements of the slider to
opposite limits of travel within said housing; means for mounting
the housing upon the door with one sidewall portion of the housing
disposed substantially against a face of the door, and with the
actuator arm overlying the housing slot; a keeper carried by and
movable with the slider; a cam element carried by the housing; a
keeper-engaging means on the cam element; and means supporting said
cam element for manual shiftability selectively toward either end
portion of the housing, to operative and inoperative positions;
said cam element in the operative position being located to engage
and restrain the keeper of the slider when the door is swung to
approximate full open position, whereas in the inoperative position
of the cam element said keeper-engaging means is located beyond the
reach of the keeper when the door is swung to full open
position.
14. The combination as defined by claim 13, wherein an aperture is
provided in the housing, through which aperture a portion of the
cam element is accessible for manual shiftability thereof to the
operative and inoperative positions aforesaid.
15. The combination as defined by claim 13, wherein is included
means for varying the force with which the keeper is restrained by
said engaging means.
16. The combination as defined by claim 13, wherein the supporting
means for the cam element is a pivot fixed relative to the housing
and about which pivot said cam element is rockable; said cam
element having a nose end including an incline onto which the
keeper may climb in approaching the keeper-engaging means; and
means maintaining a yielding contact between the keeper and said
engaging means during engagement thereof.
17. The combination as defined by claim 13, wherein the housing
sidewall portions near the end portions thereof are provided with
identical apertures receptive of said mounting means.
18. The combination as defined by claim 13, which is included
shock-absorbing means to cushion movement of the slider in one
direction as the door approaches a full open position.
19. The combination as defined by claim 16, wherein the nose end of
the cam element is prolonged to extend through and beyond the
housing slot for interception by the actuator arm when the cam
element is swung about its supporting pivot while the door is
substantially in closed position.
20. The combination as defined by claim 16, wherein said slider
includes a wall to intercept the nose end of the cam element and
limit pivotal movement of the cam element while the door is
substantially in open position.
21. The combination as defined by claim 19, wherein is included
shock-absorbing means to cushion movement of the slider in one
direction as the door approaches a full open position.
22. The combination as defined by claim 20, wherein is included
shock-absorbing means to cushion movement of the slider in one
direction as the door approaches a full open position.
23. The combination as defined by claim 14, wherein the housing
sidewall portions are provided with identical apertures receptive
of said mounting means.
24. The combination as defined by claim 23, wherein is included
shock-absorbing means to cushion movement of the slider in one
direction as the door moves to approach a full open position.
25. The combination as defined by claim 24, wherein an aperture is
provided in the housing, through which aperture a portion of the
cam element is accessible for manual shiftability thereof to the
operative and inoperative positions aforesaid.
26. The combination as defined by claim 25, wherein is included
means for inducing frictional drag between a housing wall portion
and said slider.
27. The combination as defined by claim 13, wherein the door holder
is nonhanded.
28. The combination as defined by claim 23, wherein said identical
apertures are receptive of said mounting means from either sidewall
portion of the housing, to render the door holder nonhanded.
29. The combination as defined by claim 27, wherein is included
means to preclude manual shifting of the cam element when the door
is standing at either of its fully open or fully closed positions.
Description
BACKGROUND OF THE INVENTION
Door holders for vertically hinged doors are in common usage, and
comprise usually an elongate channel or tubular member containing a
slider, and an arm pivoted at one end to the slider and at its
opposite end to the door frame, whereas the channel member is fixed
to the door, substantially as disclosed in the patents of Johnson
2,108,891, Roehm, et al. 2,958,089, Ellis 2,744,779, and Bernhard
2,497,830, for example. Sometimes the channel member is fixed to
the door frame, as disclosed by the patents of Johnson 1,986,677
and Schmid 3,144,267, with the arm pivot located upon the door.
In many instances, the installation of a door holder requires
mortising of the door or the frame, which entails added expense and
labor including removal of the door. Surface mounting of the
hardware therefore is desirable, as herein suggested. While surface
mounting of the channel member is not broadly novel, as evidenced
by the disclosure in Ellis U.S. Pat. No. 2,945,255, it presents
problems pertaining to adjustments, controls, and acceptable
appearance.
In the past, door holders designed for application to a left-hinged
door, for example, were not applicable to right-hinged doors. Such
door holders were referred to as "handed" door holders, and were
manufactured as rights and lefts, quite undesirably. Other door
holders were "nonhanded," and applicable to right- or left-hinged
doors, but such prior art "nonhanded" door holders necessitated
partial disassembly and reassembly or rearrangement of linkages to
effect the necessary alteration. This entailed time-consuming extra
labor, with the risk of improper reassembly or loss of parts.
SUMMARY OF THE INVENTION
The present invention provides a highly effective, simplified
nonhanded door holder which is quickly and easily surface installed
to control swinging doors whether hinged right or left, and which
requires no alteration or partial disassembly of the device
preparatory to installation. Means is provided also for very simply
and instantly rendering the device selectively operative or
inoperative to hold a door in open position, such means being
inoperable under certain conditions to discourage unauthorized
tampering therewith.
Another object of this invention is to minimize defacement of the
door or its frame incident to installation of the improved door
holder, and to reduce to a minimum the time, labor, and expense
involved in installing the device.
Another object of the invention is to provide a device of the
character stated which is highly durable, noiseless in operation,
and resistive to destruction or inoperability when subjected to
public use or abuse.
The foregoing and other objects are attained by the means described
herein and illustrated upon the accompanying drawings.
DESCRIPTION OF THE INVENTION
In the Drawings
FIG. 1 is a fragmentary perspective view showing the device of the
present invention applied to a right-hinged door.
FIG. 2 is a view similar to FIG. 1, showing the device applied to a
left-hinged door and its frame.
FIG. 3 is an enlarged fragmental cross section of the door holder
housing as viewed horizontally on FIG. 1, with a portion of the
housing broken away, the door being partly open but unrestrained
against movement toward closing position.
FIG. 4 is a cross section taken on line 4--4 of FIG. 3.
FIG. 5 is a view similar to FIG. 3, showing the position of the
door holder elements occurring when the door is fully open, with
the restraining cam displaced to an inoperative position.
FIG. 6 is a cross section taken, on line 6--6 of FIG. 5.
FIG. 7 is a view similar to FIG. 5, but showing the restraining cam
operative to hold the door in an open position.
FIG. 8 is a view similar to FIG. 7, but showing the position of the
door holder elements resulting as the door is intentionally and
forcibly moved from an open position of restraint toward the closed
position.
FIG. 9 is a cross section taken on line 9--9 of FIG. 7.
FIG. 10 is an exploded perspective view of the door holder and its
constituent parts, shown on a reduced scale.
The door holder herein disclosed comprises an elongate tubular or
channel-shaped housing 14 to be secured horizontally upon one face
of a door 16, by means of bolts, screws, or equivalent fasteners
18, 18. The opposite side faces or legs 20, 20 of the
channel-shaped housing are identical, and flat, so that either one
may flatly abut the door. In this connection observe FIGS. 1 and 2,
wherein it is evident that mounting of the housing on a
right-hinged door, FIG. 1, places one side face or leg of the
housing against the door, whereas in the case of the left-hinged
door of FIG. 2 the opposite side face or leg of the housing rests
against the door. Thus, with equal facility the housing may be
fixed upon corresponding faces of right and left-hinged doors by
means of the fasteners 18 which extend into or through the material
of the door for anchorage purposes.
The spaced parallel side legs 20, 20 of the channel-shaped housing
are connected by a lower or bottom wall or web 22 which is
coextensive with the length of the housing. The upper portion of
the housing is provided with inwardly turned flanges 24, 24 (FIG.
10), which are spaced apart uniformly along the length of the
housing to provide a slot or way 28 accommodating a pin for
propelling a slider or carriage 26 within the housing. The slider
or carriage 26 is shiftable lengthwise of housing 14.
Shifting of the slider is performed by an actuator arm 30 having
one end suitably pivoted as at 32 upon the door frame 34, whereas
the opposite end is pivoted at 36 upon the upper wall 38 of slider
26. As is obvious, opening and closing movements of the hinged door
results in shifting of the slider lengthwise of housing 14, with
arm 30 closely overlying the upper surface of the housing when the
door is closed. Upon swinging of the door manually or otherwise to
open position, the impact end 40 of slider 26 is free to advance
against a shock absorber block 42 to limit and cushion the opening
movement of the door.
The shock absorber includes a compression spring 44 (FIG. 10),
located between the slidable block 42 and a stationary block 46,
block 46 being normally fixed within housing 14 at the inner end 48
of the housing. Block 46 has a transverse bore at 50 for alignment
with bores 52, 52 of housing end 48, and through the bores 50 and
52 may extend one of the fasteners 18 which secure housing 14 upon
the face of door 16. In the preferred construction, block 46 may be
additionally anchored as by means of pins 54 driven into the block
through housing flanges 24, 24, FIG. 10. The shock absorber
assembly resiliently limits the extent to which door 16 may be
swung open.
A second stationary block 56 similar to block 46 is employed to
close the outer end of housing 14 (FIG. 10), and a bore 58 therein
is adapted to register with transverse bores 60, 60 of the housing
so as to accommodate a fastener 18 which anchors the outer end of
housing 14 to the door face. Block 56 may be secured as by means of
pins 62, 62 driven through the housing flanges 24, 24 and into
block 56. Slider 26 does not necessarily abut the block 56 when
door 16 is closed.
Slider 26 comprises a short length of channel stock having spaced
parallel sidewalls 64, 64, the channel being inverted so that its
legs may rest and slide upon the web 22 of housing channel 14. To
effect a snug and noiseless frictional mount of the slider within
housing channel 14, a bowed leaf spring 66 may be interposed
between the slider wall 64 and a wall 20 of channel 14, the spring
being adapted to embrace and travel with the slider, as by turning
its ends 68, 68 onto the ends of the slider channel.
The pivot screw 36 for arm 30 threads into a tapped hole 70 in
slider wall 38. A second hole therein, denoted 72, is loosely
receptive of an adjusting screw 74 which depends into the slider
channel and threadedly engages a nonrotatable nut 76, the nut being
adapted to travel lengthwise of screw 74 when the latter is
rotatably adjusted.
Within the slider is supported a spring-pressed keeper or cam
follower, which may be in the form of a transverse bar or pin 78
having its ends cradled in a pair of upright slots or ways 80, 80
formed in the sidewalls of the slider channel. Means is provided
for constantly yieldingly urging the keeper toward the bases of
slots 80, 80, and such means comprises an elongate pressure plate
or arm 82 rockingly mounted within the slider. Arm 82 has one
substantially flat end 84 which overlies keeper 78 and imposes a
downward force thereon. The opposite end of arm 82 is apertured at
86 to receive loosely the adjusting screw 74, said screw passing
through a compression spring 88 which is interposed between the
apertured end of arm 82 and the upper face of nut 76. A pivot pin
90 having ends supported by the sidewalls of slider 26 passes
through openings 92, 92 intermediate the ends of arm 82, for
rockingly supporting said arm within the slider.
As will be understood, the rocker arm end 84 will constantly
depress the keeper or follower 78 with a force determinable by
manually adjusted positions of screw 74. The screw is accessible
through the housing slot between flanges 24, 24.
Means is provided in the form of a cam latch element 94, for
selectively engaging and releasably retaining the keeper or
follower 78, as in FIG. 7, once the door 16 has been swung to open
position. In FIG. 7, slider 26 has been advanced to the left by arm
30 incident to opening the door, causing keeper 78 to strike and
ascend the inclined nose 96 of cam 94 and then drop into a well,
seat or depression 98 adjacent to the cam nose. By this time, the
slider has been stopped at 40 against the shock block 42, and the
door will be securely, though releasably held in open position.
In order to retract the slider, or move it to the right in FIG. 7
by swinging the door in closing direction, a deliberate force must
be applied to the door sufficient to cause keeper 78 to climb out
of cam well 98, as in FIG. 8. The keeper will therefore have to
overcome the adjusted force of spring 88 in order to leave well 98.
Once the keeper is released, however, the door very easily may be
swung to closed position either manually or by means of a
conventional door closer.
It should be noted that cam latch element 94 is pivoted at 100 upon
a stationary bracket 102, for manual disposition thereof from an
inoperative position, FIG. 5, to the operative position of FIG. 7.
In the inoperative FIG. 5 position of cam element 94, the keeper 78
when advanced to the left with slider 26 during a door opening
movement, will be unable to ascend the inclined cam nose 96 and
enter the well 98, and for that reason no latching of the door in
the open position will occur. Such latching or retention of the
door will occur only when cam element 94 is rotated to the
operative position of FIG. 7.
Bracket 102 may be fastened at 104 upon the web of housing 14, and
the base thereof is provided with a slot or opening 106 to coincide
with a slot 108 formed in the housing web, whereby a knurled
actuator portion 110 of the cam element is rendered accessible at a
location beneath housing 14. The knurled actuator portion or finger
piece of the cam element is utilized in manually rotating the cam
element to the operative and inoperative positions aforesaid, FIGS.
7 and 5, respectively. Finger piece or actuator portion 110 may be
in the nature of a circular head or base, and the portion carrying
cam incline 96 preferably is of such weight as to ensure that the
cam element will rest in either of the selected positions,
preferably without the aid of any springs acting thereon.
It is important to note that the swing of cam element 94, or the
distance from the axis of rotation at 100 to the tip of the cam
nose, is prolonged to the extent that the nose tip will describe an
arc indicated by the broken line a--a of FIG. 3, the apex of which
projects upwardly beyond the upper surface of housing 14 and into
or beyond the plane of the under surface of actuator arm 30. The
purpose of this is to preclude manual swinging of the cam element
from one of its extremes to the other, while the door 16 is either
substantially closed or substantially open. Thus, when the door is
open or substantially open, an overlying portion of the slider
upper wall 38 will block any attempt to swing the cam element from
the FIG. 7 position to the position of FIG. 5. Similarly, when the
door is closed or substantially closed, the arm 30 by closely
overlying housing 14, will intercept the cam element nose and block
any attempt to swing the cam element between the positions stated
so long as the door is closed or substantially closed.
In view of the foregoing explanation, it is evident that the cam
element 94 may be manipulated only while the door is ajar, and not
at other times. The aforesaid construction effectively discourages
unauthorized changes in the controlling of the door, thereby
reducing to a great extent any unauthorized tampering
therewith.
As is best illustrated upon FIGS. 3, 4 and 5, disposition of cam
element 94 to the inoperative position places it out of reach of
keeper 78 when slider 26 is butted against shock block 42 at 40,
this being the position of the slider and keeper 78 when door 16 is
fully open. Since the cam element in the inoperative position
cannot be engaged by keeper 78 for holding the door open, the door
movements are unrestrained so long as the cam element remains in
that position.
The specific nature of the shock absorber means is a matter of
immateriality to the present invention. As herein disclosed, said
means may be enclosed by a protective cover 112 fixed to block
46.
This means 18 utilized for securing the door holder housing 14 to
one face of a door, may take various forms. In the embodiment
shown, such securing means is a sex bolt which comprises a tubular
female part 114, (FIG. 9), having a head 116 and an adjacent fluted
shank portion 118 to preclude rotation thereof in the drill hole
120. Part 114 includes an axial bore which is internally screw
threaded.
The male part of the sex bolt is a screw having a threaded shank
122 received in the threaded bore of part 114, and having a head
and an adjacent neck 124, the neck being rotatable in bore 50 of
stationary block 46 for clamping the housing 14 against door 16 and
between the heads of the sex bolt. The sex bolt as shown will
secure either of the housing walls 20, 20 against the door with
equal facility, as is desirable in applying the door holder to
right- or left-hinged doors according to FIGS. 1 and 2,
respectively. No alterations of any kind are involved in applying
the door holder to either hand of door, wherefore the door holder
of the present invention is seen to be genuinely and completely
nonhanded.
As previously mentioned herein, housing 14 is referred to as
channel-shaped or tubular of form, the intention being to suggest a
housing which is in the form of a hollow cylinder. In such event,
the slider and the shock-absorbing means and also the end closure
blocks for the housing, are to be of substantially cylindrical
shape. Such a departure from the structure exemplified herein need
not alter the mounting means or any of the features of the device
alluded to as being improvements, or objectives of the
invention.
The tension adjusting means for keeper or follower 78 can be used
for adapting the door holder performance to various conditions,
such as different weights or sizes of doors, he presence of air
currents, and other factors encountered incident to differing
installations. Noteworthy also is the simple and effective cam
means previously mentioned, whereby is discouraged the tendency of
some persons to tamper with the door holder and alter its function
contrary to authoritative intent.
* * * * *