U.S. patent number 3,736,778 [Application Number 05/208,086] was granted by the patent office on 1973-06-05 for combination lock.
Invention is credited to Lazlo Bako.
United States Patent |
3,736,778 |
Bako |
June 5, 1973 |
COMBINATION LOCK
Abstract
A combination lock of the multiple dial type employs a
resiliently mounted plunger cooperable with a hasp to releasably
connect the hasp to the combination lock. The lock includes a slide
member mounted for movement to respective latched and unlatched
positions, and means are provided permitting the slide member to
move to unlatched position only when the dials are on predetermined
open combination. The slide member and the plunger are provided
with cooperable means to retract the plunger upon movement of the
slide member to unlatched position. Ejector means located adjacent
the plunger acts to forcibly separate the hasp from the combination
lock upon retraction of the plunger.
Inventors: |
Bako; Lazlo (Woodcliff Lake,
NJ) |
Family
ID: |
22773124 |
Appl.
No.: |
05/208,086 |
Filed: |
December 15, 1971 |
Current U.S.
Class: |
70/70; 70/74;
292/333 |
Current CPC
Class: |
E05B
37/02 (20130101); Y10T 292/546 (20150401); Y10T
70/508 (20150401); Y10T 70/5062 (20150401) |
Current International
Class: |
E05B
37/00 (20060101); E05B 37/02 (20060101); E05b
065/50 () |
Field of
Search: |
;70/5,66,68,70,74,106,312 ;292/DIG.48 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Craig, Jr.; Albert G.
Claims
I claim:
1. A combination lock for connection to a hasp, the combination
lock comprising a plurality of rotatable dials, a sleeve associated
with each dial for rotation therewith, a slide member mounted for
movement to latched and unlatched positions, means permitting the
slide member to move to unlatched position only when the dials are
on predetermined open combination, a resiliently mounted plunger
for releasable connection to the hasp, cooperable means provided by
the slide member and the plunger to retract the plunger upon
movement of the slide member to unlatched position, and means
adjacent the plunger to eject the hasp from the combination lock
upon retraction of the plunger.
2. A combination lock according to claim 1 wherein the cooperable
means provided by the slide member and the plunger to retract the
plunger upon movement of the slide member to unlatched position
comprises cam means on the slide member and cam follower means on
the plunger.
3. A combination lock according to claim 2 wherein the slide member
is provided with a pair of transversely spaced arms at one end
thereof, the plunger being positioned between the arms, the cam
means on the slide member comprising a cam on each arm and the cam
follower means on the plunger comprising a wing portion extending
from each side of the plunger.
4. A combination lock according to claim 3 including a puller
connected to the slide member, and resilient means associated with
the puller to normally urge the slide member toward latched
position.
5. A combination lock according to claim 4 including a face plate
having longitudinally spaced slots, the dials being positioned to
partially extend through the slots, an aperture extending through
the face plate near one end thereof, the resiliently mounted
plunger being positioned to extend through the aperture, the puller
being positioned on the outer face of the face plate near the
opposite end of the face plate and being connected to the slide
member.
6. A combination lock according to claim 5 wherein a cap is
positioned on the outer face of the face plate and connected
thereto, the cap overlying the plunger and the means adjacent the
plunger to eject the hasp, one side of the cap providing an opening
for the entry and exit of the hasp.
7. A combination lock according to claim 6 wherein the means
adjacent the plunger to eject the hasp upon retraction of the
plunger comprises a generally U-shaped member having a pair of
spaced arms and a base portion, the end of each arm having an
upstanding projection, a spring extending between each projection
and a shoulder provided by the cap and the base portion having an
upstanding projection for engagement by the hasp.
8. A combination lock according to claim 7 wherein the opening for
entry and exit of the hasp faces the side of the combination
lock.
9. A combination lock according to claim 7 wherein the opening for
entry and exit of the hasp faces the end of the combination
lock.
10. A combination lock according to claim 1 including a face plate
having lontitudinally spaced slots, the dials being positioned to
partially extend through the slots, an aperture extending through
the face plate near one end thereof, the resiliently mounted
plunger being positioned to extend through the aperture.
11. A combination lock according to claim 10 wherein a cap is
positioned on the outer face of the face plate and connected
thereto, the cap overlying the plunger and the means adjacent the
plunger to eject the hasp, one side of the cap providing an opening
for the entry and exit of the hasp.
12. A combination lock according to claim 11 wherein the means
adjacent the plunger to eject the hasp upon retraction of the
plunger comprises a generally U-shaped member having a pair of
spaced arms and a base portion, the end of each arm having an
upstanding projection, a spring extending between each projection
and a shoulder provided by the cap and the base portion having an
upstanding projection for engagement by the hasp.
Description
The invention is directed to improvements in combination locks of
the multiple dial type, and is more particularly directed to a
combination lock constructed to eject a cooperable hasp when the
lock is on open combination and it is desired to disconnect the
hasp from the lock.
BACKGROUND OF THE INVENTION
There are certain applications or uses of a combination lock and
its essential cooperable hasp which do not afford a suitable
support for the hasp assembly. For example, in one type of softside
luggage, access to the interior of the case is through an opening
which is closed by a slide fastener or zipper in the side wall of
the case. The slider for opening and closing the fastener has a
hasp connected thereto for cooperation with a latching device or
lock when the slider is in its fully closed position. For an
application of this kind, it has been recognized that some means is
desirable to forcibly separate the hasp from the latching device or
lock.
In Scelba U.S. Pat. No. 3,598,436 granted Aug. 10, 1971, the hasp
is provided with means to eject or forcibly separate it from a
latching device or lock when a latching member of the lock is moved
from latched to unlatched position. In this structure, the hasp is
related to the lock, which may be a combination lock, so that the
hasp as it is separated from or connected to the lock moves in a
plane perpendicular to or in an up and down direction with respect
to the face of the lock.
There are certain applications where it is desired that the hasp
move into and out of the lock in a plane parallel to the face of
the lock as the hasp is connected or disconnected from the lock.
Also, it is desirable that the means for causing the ejection of
the hasp from the lock be concealed and protected from possible
damage.
A primary object of the invention is to provide a combination lock
structured to automatically eject a hasp.
Another object of the invention is to provide a combination lock
employing means for automatically ejecting a hasp which are
concealed and protected from possible damage.
Still a further object of the invention is to provide a combination
lock wherein a slide member which is mounted for movement to
respective latched and unlatched positions is constructed for
cooperation with retractable hasp holding means, the release of the
hasp permitting an associated ejector member of the lock to
forcibly separate the hasp from the lock.
These, and other objects and advantages of the invention will be
apparent from the following detailed description of a preferred
embodiment of the invention.
SUMMARY OF THE INVENTION
A combination lock for connection to a hasp comprises a plurality
of rotatable indicia dials, a sleeve associated with each dial for
rotation therewith, and a slide member mounted for movement to
respective latched (hasp holding) and unlatched (hasp releasing)
positions. The slide member may move to unlatched position only
when the dials are on predetermined open combination, and for this
purpose, cooperable means may be provided by the sleeves and the
slide member to permit such selective movement of the slide member.
A resiliently mounted plunger is provided to releasably connect the
hasp to the combination lock. The slide member and the plunger are
provided with cooperable means for the retraction of the plunger in
response to the movement of the slide member to its unlatched
position. Means is provided adjacent the plunger to eject the hasp
from the combination lock upon retraction of the plunger.
As will subsequently appear, the plunger and the adjoining means to
eject the hasp are concealed within the combination lock and are
protected from possible damage. Also, the combination lock of the
invention and the hasp are related to one another so that the hasp
comes into the lock and is ejected from the lock in a plane
parallel to the plane of the lock's face plate, as distinguished
from a hasp which moves perpendicularly to the face of the
lock.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a top plan view of the combination lock of the invention,
this view also showing a hasp assembly releasably connected
thereto;
FIG. 2 is a transverse, vertical cross section taken approximately
in the plane of line 2--2 of FIG. 1;
FIG. 2A is a partial view similar to FIG. 2, this view showing the
hasp as it is being ejected from the lock;
FIG. 3 is a longitudinal, vertical cross section taken
approximately in the plane of line 3--3 of FIG. 1;
FIG. 4 is a view similar to FIG. 3, this view showing the slide
member in unlatched position whereby the plunger is retracted to
permit the hasp to be disengaged for ejection from the lock;
FIG. 5 is a transverse, vertical cross section taken approximately
in the plane of line 5--5 of FIG. 1;
FIG. 6 is a top plan view of the slide member component of the
lock;
FIG. 7 is a top plan view of the ejector member component of the
lock;
FIG. 8 shows a dial and an associated sleeve;
FIG. 9 is a top plan view of another embodiment of a combination
lock made in accordance with the invention; and
FIG. 10 is a longitudinal, vertical cross section taken
approximately in the plane of line 9--9 of FIG. 8.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring to FIGS. 1-8, a combination lock A is made for connection
to and separation from a hasp assembly B. The hasp assembly
comprises a hasp 10 having an aperture 12 extending therethrough.
As shown in FIG. 2, a pin 14 is provided at the rear end of the
hasp for the pivotal connection thereto of a link 16. The link in
turn is formed for connection to the pull of a slider for a slide
fastener (not shown). The front edge or nose of the hasp 10 is
beveled at 18.
The combination lock A comprises a face plate C, a slide member D,
and a frame E. The face plate and frame are formed and connected to
one another to support and substantially enclose plurality of
rotatable indicia dials F. Preferably, a sleeve G is associated
with each dial for rotation therewith. The slide member D is
mounted for longitudinal movement to respective latched (FIG. 3)
and unlatched (FIG. 4) positions.
As shown in FIGS. 1, 2, 2A and 3, the combination lock A also
includes a resiliently mounted plunger H cooperable with the
aperture 12 in the hasp 10 to releasably connect the hasp assembly
B to the combination lock A. Cooperable means are provided by the
slide member D and the plunger H to retract the plunger upon
movement of the slide member from the hasp holding position as
shown in FIGS. 2 and 3 to the hasp released position as shown in
FIGS. 2A and 4. Means in the form of a resiliently mounted ejector
member J is positioned adjacent the plunger H to forcibly separate
the hasp from the combination lock upon retraction of the
plunger.
Protective means is provided for the plunger H and the associated
ejector means or member J. For this purpose, a cap K is connected
to the face plate C to overlie the plunger H and to provide a
housing for the ejector member J. One side of the cap provides an
opening 20 for the entry and exit of the hasp 10 as shown in FIGS.
2 and 2A. The cap is made of relatively heavy gauge metal and
serves to protect the parts which it covers. In addition, the cap
serves to conceal the plunger and ejector member.
The slide member D is constructed to provide means cooperable with
portions of the sleeves G to permit the slide member to move to
unlatched position only when the dials F associated with the
sleeves are on predetermined "open combination." When the dials are
"off combination," the slide member cannot be moved. Thus, the
sleeves are formed and related to cooperable blocking means
provided by the slide member to lock the member in its latched
position (off combination) where the hasp is connected to the
combination lock, or wherein the slide member may clear or bypass
the sleeves to enable movement of the slide member to unlatched
position (on combination). Upon movement to unlatched position, the
plunger H is retracted from the hasp to allow forcible separation
or ejection of the hasp from the combination lock by the
resiliently mounted ejector member J.
It is within the scope of the invention to provide the combination
lock with a combination which is pre-set at the factory and is
intended to be used with only such combination. For this kind of
lock, the dials F may be provided with integral sleeve portions. In
the preferred and illustrated embodiment of the invention, however,
the lock is constructed so that one may change or set the
combination to a combination of one's own personal and secret
choice. For this purpose, the sleeves G are made as separate parts,
and as will subsequently appear, the sleeves and dials are
constructed to be separably keyed to each other. The structure of
the dials F and the sleeves G and their relationship to each other
are the same as disclosed in Gehrie U.S. Pat. No. 3,416,338 granted
Dec. 17, 1968. Also, the relationship of the sleeves with the slide
member is essentially the same as disclosed in this patent insofar
as allowing movement of the slide member (on combination) or
preventing movement of the slide member (off combination). However,
as previously indicated and in accordance with the present
invention, the slide member D is provided with means cooperable
with the plunger H to retract the plunger upon movement of the
slide member to unlatched position.
In greater detail and as illustrated, the dials F are each provided
with indicia or numbers in equidistantly spaced relation on the
outer circumference. Between adjacent numbers, there are grooves 24
(FIG. 1) adapted to receive means provided by a dial cooperable
spring member L (FIGS. 3 and 4) so that the dials when related to
their respective sleeves mounted on a shaft M may be resiliently
maintained in selected circumferential position.
Referring to FIG. 8, each dial F has a central opening 26 through
which the shank 28 of a sleeve G may be extended with a slight
amount of clearance. The sleeve has a central bore of a diameter
slightly greater than the diameter of the shaft M (FIGS. 3 and 4).
At one end thereof, each sleeve is provided with a flange 32 having
a larger diameter than the central opening 26 of a dial. The
flanged end of the sleeve is provided with a flat portion 34. At
the juncture of the flange and the sleeve's shank, a detent or
detents 36 are provided. On one side of each dial circumferentially
arranged detent receiving recesses 38 are provided adjacent the
opening 26, there being one recess in alignment with each number on
the dial's outer circumference. The recesses 38 extend only
partially into the side wall of the dial and are adapted to receive
the detents 36 whereby a dial and a sleeve may be keyed or meshed
to one another.
As shown in FIGS. 3 and 4, a helically coiled compression spring N
is mounted on one end of the shaft M to abut an adjacent sleeve G.
The sleeves being in abutting end to end relationship are thereby
resiliently maintained in separably keyed relationship with their
respective dials F. The sleeve G on the opposite end of the shaft M
is forced against a flange 40 formed on the shaft. As disclosed in
the aforementioned Gehrie patent, such structure and relationship
of sleeves, dials, shaft, and spring permit changing and setting
the combination of the lock to a combination of one's secret choice
by manipulation of a lever O mounted on the shaft M. As shown in
FIG. 5, the frame E is provided with an opening 42 in a side wall
to allow the change lever to extend therethrough for manual
manipulation.
As shown in FIGS. 3 and 4, the frame member E is dished or shaped
so that when connected to the face plate C, the shaft M, dials F,
sleeves G, and spring N are enclosed except for portions of the
dials F which partially extend through longitudinally spaced slots
44 in the face plate. Also, the face plate and frame preferably are
formed so that when connected to one another they provide
longitudinally spaced bearings 46 for the ends of the shaft M. The
face plate C and frame E may be connected in any suitable manner.
For example, the face plate, which may be die cast, may be formed
with integral, spaced, connecting studs 48 each having a shoulder
near the end thereof. The studs are extended through aligned
openings formed in the frame and then the ends of the studs are
headed over to secure the parts as known in the art. As indicated
in FIG. 1, four connecting studs may be used.
The slide member D is positioned on the underside of the face plate
E for longitudinal movement by means of a manually operable puller
P. As shown in FIG. 6, the slide member is provided with a
plurality of longitudinally spaced slots or openings 50. The
central slot has its sides defined by the longitudinally spaced,
transversely extending crossbar portions 52. There are three slots
50 when there are three dials as illustrated. These slots are of
greater width than the slots 44 in the face plate; also, the slots
50 are each of a width slightly greater than the total thickness of
a dial F and of the flange portion 32 of a sleeve G. As described
in the aforementioned Gehrie patent, the flanges 32 of the sleeves
may be positioned within the slots 50 while clearing the underside
of the face plate C. In such position of a flange on a sleeve,
movement of the slide member is blocked. When, however, the flats
34 on all the sleeves are oriented, as shown in FIGS. 3 and 4,
there is clearance of the slide member's crossbar portions 52 and
the other portions of the slide member to allow movement of the
slide member from hasp holding to hasp released positions and vice
versa. The slide member also is provided with a tab 53 which
extends between the pair of transversely spaced studs designated
48a in FIG. 1 to guide the slide member as longitudinal movement is
imparted thereto.
The puller P, which preferably is die cast, is provided with a pair
of integral, spaced connecting studs 54 having shoulders and end
portions which are extended through openings 56 in the sleeve D and
headed over to secure the connection of the puller to the slide
member as shown in FIG. 5. The face plate C is provided with a pair
of spaced, longitudinally extending slots 58 to allow the
connecting studs 54 to extend therethrough with some clearance.
Resilient means, preferably in the form of a coiled compression
spring R, is related to the puller and to means provided by the
face plate so that the slide member is normally urged toward the
latched position as shown in FIG. 3. For this purpose, the puller
is provided with a recess 59 (FIG. 5) on its underside within which
the spring R is positioned. One end of the spring bears upon an
inturned side wall 60 of the puller, and the other end of the
spring bears against a projection 62 extending from the outer
surface of the face plate C as shown in FIGS. 3 and 4.
At the end of the assembly opposite where the puller is located,
the face plate C is provided with an aperture 64 through which the
plunger H extends as shown in FIGS. 2, 2A, 3 and 4. The plunger,
which preferably is die cast, has a central, downwardly extending
support portion 66 which receives a spring S, the lower end of
which is seated in a bearing portion 68 provided by the frame
member E. To allow clearance of the lower extremity of the support
portion 66 when the plunger is depressed, the frame member may be
provided with an aligned opening 70. Thus, the plunger H normally
is urged outwardly and up through the opening 64 in the face plate
C.
The slide member D is provided at the end thereof opposite the end
connected to the puller with cam means for cooperation with a cam
follower provided on the plunger H. As shown in FIG. 6, one end of
the slide member D is bifurcated to provide a pair of transversely
spaced arms 72. The arms are spaced apart a distance slightly
greater than the corresponding dimension or diameter of the plunger
H so that the plunger may extend between the arms in the
hasp-holding position of the plunger. Each arm is downwardly bent
or curved at 74 to provide cams cooperable with wing portions 76
extending from opposite sides of the plunger H.
The cap K overlies the spring mounted plunger H, and as previously
indicated, provides a housing for the ejector J and means
cooperable with springs for the resilient mounting of the ejector.
The cap K also preferably is die cast and provided with integral,
downwardly extending, spaced connecting studs 78 which serve to
connect the cap to the face plate C as shown in FIGS. 2 and 2A. The
cap has an inturned flange wall on all sides except for the side
where the opening 20 is provided to allow entry and exit of the
hasp 10.
As shown in FIG. 7, the ejector J is substantially U-shaped and has
a pair of spaced arms 82 and a connecting base portion 84. An
upstanding projection 86 is provided at the free end of each arm,
and the base portion is provided with an upstanding projection 88.
The ejector member J is positioned within the space or area
provided by the cap and the underlying portion of the face plate so
that the plunger H is located intermediate the arm portions 82. For
symmetry and balance, a pair of ejector springs T are associated
with the ejector member J. Each spring overlies an arm 82 and
extends between the arm's upstanding projection 86 and a shoulder
provided by the cap. The cap is made or cast with tracks to receive
the arms 82 and guide the ejector as it moves within the housing
provided by the cap and adjoining portion of the face plate.
The combination lock as illustrated includes means for finding the
open combination in the event that the lock has been set to "off
combination" and the combination lost or forgotten. For this
purpose, each of the sleeves is provided with a visual or feel
indicator or slot 90 (FIG. 8) and the frame E and a back cover U
have openings 92 and 94, respectively, extended therethrough for
alignment with the indicators 90 on the sleeves. Such structure,
while preferred and illustrated, is disclosed and claimed in the
aforementioned Gehrie patent and does not constitute part of the
present invention.
The combination lock A is made to enable the ready connection
thereof to a wall W of a luggage case or the like. The wall may be
a flexible material such as vinyl sheeting or a fabric having a
vinyl coating thereon. Referring to FIGS. 3 and 4, the face plate C
may be provided with a peripheral flange 96 having spaced teeth 98
extending from the underside of the flange. Also, as shown, the
face plate may be provided with longitudinally spaced, outwardly
tapered connecting apertures 100. To assemble the combination lock
with a wall W, the back cover U is provided with through holes 102
for alignment with the connecting recesses 100. Connecting studs or
rivets 104 are extended through the apertures in the back cover and
into the connecting recesses. Pressure is transmitted to a
peripheral flange 106 on the back cover bearing against the wall W
thereby causing the teeth 98 to bite into the material of the wall.
It will be apparent that the wall is provided with a cutout 108 so
that a portion of the combination lock and the back cover may
extend therethrough. As shown in FIG. 5, the back cover is provided
with an opening 110 so that the lever 0 for changing the
combination may extend therethrough for manipulation by the
user.
In the embodiment of the invention illustrated in FIGS. 1-5, the
hasp 10 of the hasp assembly B is cooperable with the combination
lock so that the opening for the entry and exit of the hasp faces
the longitudinal side of the combination lock. In the embodiment of
the invention illustrated in FIGS. 9 and 10, the opening designated
20' in the cap K for entry and exit of the hasp, faces the end of
the combination lock. The structure and relationship of the parts
of the combination lock designated A' are otherwise the same as
previously described in connection with the lock shown in FIGS. 1
through 8.
The device operates in the following manner. To connect the hasp
assembly to the combination lock, the hasp 10 is extended through
the opening 20 (or 20' in FIGS. 9 and 10) in the side of the cap K.
The bevel 18 of the hasp engages the top edge of the plunger H
causing the plunger to be depressed against the force of its spring
H. As the hasp is pushed further into the space provided between
the cap and the face plate, the opening 12 in the hasp becomes
aligned with the plunger whereupon the spring S causes the plunger
to snap into the aperture 12. As the hasp is pushed within the cap,
the nose of the hasp engages the projection 88 of the base portion
of the ejector as shown in FIG. 2. As a result, the ejector springs
S are compressed, thereby spring loading the ejector member. In
this relationship of the parts, the hasp is connected to the lock.
The hasp may be thus connected to the lock if the dials are either
on or off combination.
To disconnect the hasp from the lock, the dials F must be rotated
to "open combination." Then, a force may be applied to the puller P
in the direction indicated by the arrow in FIG. 3 so that the slide
member D may move to the position shown in FIG. 4. The longitudinal
movement imparted to the slide member is translated into a downward
movement of the plunger H; that is, the plunger is retracted in a
direction perpendicular to the direction of movement of the slide
member. Such movement of the plunger is caused by the engagement of
the cams 74 with the wing portions 76 on the plunger to depress it.
As a result, and as shown in FIGS. 2A and 4, the plunger is
withdrawn from the aperture 12 of the hasp, whereupon the spring
loaded ejector J acts to forcibly eject the hasp from within the
cap K and away from the lock A.
It is believed that the advantages and improved results afforded by
the combination lock of the invention will be apparent from the
foregoing detailed description. Various changes and modifications
may be made to the preferred embodiments of the invention
hereinbefore described without departing from the spirit and scope
of the invention as sought to be defined in the following
claims.
* * * * *