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sePt- 7, 1943'
5 Sheets-Sheet 1
Filed March 4, 1946 '
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Sept. '_7, 1948.
s Sheets-Sheet " 2
Filed March 4, 1946
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Sept. 7, 1948.
Filed March 4, 1946
v 5 Sheets-Sheet 3’
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Patented Sept. 7, 1948
Anthony Vanderveld, Grand Rapids, Mich, as
signor to Grand Rapids Store Equipment Com
pany, Grand Rapids, Mich., a corporation of
Application March 4, 1946, Serial No. 651,682
7 Claims. (Cl. 70-82)
adjacent door carriers between which the lock
is located.
The present invention relates to a lock for slid
ing doors. It is primarily adapted for use with
an application to the sliding glass doors of show .
cases used in stores for holding and displaying
articles of merchandise.
Fig. 9 is a horizontal section through the lock
and the member in which it is mounted, the sec
1 tion in Fig. 9 being at a plane a short distance,
below its upper ends.
One well known and largely used type of show
case has a base, with ?xed vertical sides and front
Fig. 10 is a similar section, the plane of said
a show case is open for substantially one half
?cation in form of the inner side of one end
section being lower than in Fig. 9, and through
and a horizontal top largely if not entirely of
the key operated lock structure.
glass,‘ with the back closed by movable sliding
doors located in closely adjacent vertical planes, 10 Fig. 11 is an end elevationof the'lock.
Fig. 12 is a transverse vertical section through‘
one in front of the other, and overlapping at ad
the structure shown in Fig. 11 at a plane located
jacent edges when the doors are in closed posi
approximately at the key operated barrel lock‘
tion, movable each with respect to the other to
of member.
selectively open the showcase substantially one
half ‘of its length‘at either end thereof. The 15 Fig. 13 is a perspective view of the lock, taken
looking downwardly and at the rear side thereof.
doors, also of glass, arev mounted on suitable
Fig. 13a illustrates in perspective a slight modi
carriers therefor for sliding movements. When
of the lock construction.
of its back at either end thereof, the two glass
doors are located with one substantially wholly 20 Fig. 14 is a front elevation of a wall case con
struction, having an upper display section with
back of the other.
sliding closing doors to which a lock of my in
The present invention is directed to a lock‘
vention is applicable.
for such doors which is of a simple construction,
Fig. 15 is a fragmentary vertical section, similarv
readily produced, easily operated and which may
to‘ Fig. 6; with the lock applied to the wall case in
be mounted substantially at the center of the
inoperative position.
show case and adjacent the lower edges‘of the
Fig. 16 is a similar section with a lock in opera
door. In its operative position, with the doors
tive position, like in Fig. 5, and with it used .to
closed it securely'holds the doors against sliding
lock the upper drawer of a plurality of drawers‘
movement and thereupon locks the doors against
movement, preventing access to merchandise 30 located below the upper display part of the wall
within the'show case.
An understanding of the invention may be had
from the following description, taken in connec
tion through the lock and adjacent parts, with
Fig. 17 is a fragmentary transverse vertical sec- '
the lock in operative position as in Fig. 16.
Fig. 18 is a fragmentary plan showing the keep
tion with the accompanying drawings, in which,
Fig. 1 is a perspective rear view of a show case
er used at the upper edge of the front of the.
upper drawer.
Fig. 19 is a vertical transverse section, similar
to Fig. 17, illustrating a modification in structure
to which my invention is applied.
Fig. 2 is a fragmentary enlarged transverse ver
tical section illustrating the slidable mounting of
the doors upon‘ carriages therefor.
Fig.3 is a fragmentary longitudinal vertical
section‘and elevation showingthe lock in its op
erative locking position.
and the way the lock is used therewith. -
Fig. 20 is a plan similar to Fig. 18, showing thev
' keeper construction used with the drawer.
Like reference characters‘ refer to like parts
Fig. 4 is a similar view of the lock in its inop
erative position.
Fig’. 5 is a view similar to Fig. 3 showing a view
of the look from its opposite side in its operative
Fig. 6 is a view similar to Fig. 5 with the lock -
in the different figures of the drawings.
The show case, generally designated at I, has
a base, and vertical ends and front and a hori
zontal top largely of glass above the base. The
doors 2 and 3 at the back of the case are located
above a rear base portion 4 at the upper side
in its released or inoperative position.
50 of which guides for the door carrying carriages
Fig. '7 isa fragmentary elevation of the por
are secured. Said guides of metal are of substan
tion of the case at which'the lock is located, the
tially U-shaped form having a horizontal bottom
position of the lock being indicated in dotted
or we 5 (Fig. 2) and front and rear vertical par
allel fl nges 6. A center or middle vertical mem
.aFlgzB is a fragmentary plan of the lock and the 55 ber ‘I, midway between and parallel to the ?anges
6, extends the full length of said carrying guides
for the door carriages except for a short distance
midway between its ends where it is removed
for the reception of the lock of my invention.
Carriages in the form in inverted U-shaped
elongated members 8 of thin metal are located in
the spaces between the ?anges 6 and 1 and arev
provided with rollers 9, the upper portion of which
extend through suitable openings in the upper
sides of the carriages, against which rollers the 10
lower edges of the closure doors 2 and 3 bear.
The door 3, as shown, rides upon a carriage at
one side of the division web or partition ‘I, and
the door 2 upon the other carriage located at
the opposite side of said partition ‘l. Said doors
when closed overlap at their adjacent vertical
edges for a short distance as shown in Fig. 1.
The lock of my invention is located between
cated between the ?anges I0 and I2. Between
its ends an arm 28 extends over the upper edge
of the arm 24 of lever 2i. The opposite end of
the member 26 is formed with two downwardly
extending spaced apart legs 29 mounted to turn
on a horizontal pivot pin 30, carried by the spaced
?anges IE) and I2 as shown in Fig. 13.
' Upon the pin l9 being turned to lower posi
tion, as in Fig. 13, lever 2| is turned in a clock
wise direction lifting the ?ngers 25 to an upper
vertical position. Simultaneously with such
movement, the member 26 is turned in a counter
clockwise direction, because of the lifting of the
arm 28, thus elevating the ?nger 21 to a similar
vertical upper position. This is shown in Fig. 13,
and also in Figs. 3 and 5; while in Figs. 4 and 6
upon turning the lock to move the pin l9 to upper
position, the lever 2| and the member 26 drop
by gravity or by spring pressure as shown to the
the ?anges 6, midway between the ends thereof
and at the place where the doors 2 and 3 overlap 20 position shown in Figs. 4 and 6, lowering the
when closed. Such lock (Fig. 13) is made of
metal and includes a U-shaped body member hav
ing a vertical ?ange ill at one side, a horizontal
web H and a spaced vertical ?ange l2, portions
of both of said ?anges l0 and I2.being removed
as shown to provide space for the operation of
the immediate folding members which engage
with the doors. At one end of this channel like
body a key operated lock is mounted. It is dis
posed between the spaced ?anges Ill and 16, under
an upper cover plate l3 and between two end
plates M. The lock i5 thus enclosed has a body
of metal in which a barrel i6 is mounted to turn
upon its horizontal longitudinal axis. The body
of the lock and the barrel I6 are provided with
spring actuated tumblers H which are brought
into position by insertion of a key is into the
barrel so that the barrel may be freely turned
by the key. At the inner end of the barrel a
horizontal pin l9 extends therefrom through an
are shaped slot 20, the barrel being limited in
rotation by the pin coming to the ends of the
slot 20.
As shown in Fig. 13a, the triangular shaped end
?ngers 25 and 21 as shown therein.
The look as thus described is installed and se
cured midway between the ends of the channel
carriage guides, the intermediate partition ‘I being
cut away at its middle portion and the lock in
stalled as shown in Fig. 8. Preferably, the lock
is covered by a thin metal cover 3| secured by
screws and having a down-turned ?ange 32 as
shown in Figs. 11 and 12, with openings for the
passage of the ?ngers 25 and 21.
Wth the lock thus installed the members 2|
and 26 in the inoperative position as shown in
Figs. 4 and 6, permit the doors 2 and 3 to freely
slide. To look the doors against movement, they
5 are moved to closed position, as in Fig. 1, the
key is inserted in the barrel I6 and the barrel
turned to move the pin [9 from upper position,
in Fig. 6, to lower position shown in Figs. 5 and
13. This lifts the two ?ngers 25 and 21 above
the lower edges of the doors 3 and 2, respectively,
and substantially at the inner vertical edges of
such doors, as shown in Figs. 3 and 5. The ?ngers
25 and 21 thereon interpose positive stops against
sliding movements of either of the doors, which
of the key, shown at I8a, extends through a cir 115 are held locked against movement until by oper
cular opening 20a together with the pin H]. To
ation of the key l8, the stopping or obstructing
limit the key, and therefore, the barrel IS in
?ngers 25 and 2'! are lowered to their inoperative '
rotation, the ?ange 6, as shown in Fig. 7, has
positions shown in Figs. 4 and 6.
a key passing opening slightly greater than a
The ?ngers 25 and 21, swinging through an are
semi-circle, the key being stopped in turning after
about the pivotal axes of the pivots 22 and 30,
it has moved 180° from either of its extreme po
in addition to moving vertically also move short
sitions. The projecting end I 8a of the key serves
distances horizontally; and should the doors not
to stabilize the key against lateral or other un
be completely closed, which might occur because
desired movement.
of slight rebound when brought up against cush
At the outer side of the side In of the lock
ion stops at their outer edges, they will still en
carrying channel a lever 2| is pivotally mounted
gage with the inner edges of the door, and when
between its ends at 22 to turn about a horizontal
the ?ngers 25 and 21 reach their ?nal vertical
axis. One arm 23 of the lever extends underneath
positions, as in» Figs. 3 and 5, will have moved
pin I9. The arm 24 at the opposite side of the
the doors the slight distance. required to com
pivot terminates in an upwardly extending ?nger
pletely close them. Such are paths of travel of the
25. In Fig. 13, the lever is shown as of two parts
?ngers further insures that they will not come
which are permanently and inseparably connect
up against the under edges of the doors, should
.ed, to be in elTect integral, and of course, such
the doors be slightly away from closed position,
lever may be made from a single piece of metal
as they would do if the ?ngers were positioned
of the requisite thickness. It is shown in the
vertically at all times, and during their move
two-part construction appearing because the two
parts may be more quickly processed by punch
In Figs. 14 to 20 inclusive, the lock is used in
press operators and afterward permanently se
connection with sliding glass doors at the front
cured together, the expense being less than use
of an upper display portion or section of a wall
of a single part lever of the required thickness, 70 case, which is used in stores, usually though not
too thick to be readily produced by normal punch
necessarily, against the wall of the store, below
press operations.
the doors, one above another, drawers may in
Adjacent the end of the supporting channel
some cases, be located.
member of the lock, an arm 26, terminating at
The lock is slightly modi?ed in structure to
one end in an up-turned lip or ?nger 2'! is 1o-v 75. simultaneously lock the upper drawer with the
locking of the doors against sliding movement.
wardly. extending vertical sides, a :lever 'pivotally
The locking of the drawers below the upper
a locking of the upper drawer simultaneously with
mounted between its ends at the .outer side of one
of the said sides of the support and substantially
midway between the ends of the support, said
lever having oppositely extending arms, one of
which terminates in an upwardly extending
?nger, a pivotally mounted member mounted on
and‘between the sides of the support, at the-end
the locking of the sliding doors at the frontof the
displaysection results in all of the drawers being
thereof adjacent which said ?nger is located, said
member having vertical spaced legs through
locked against outward movement.
which the pivot extends near their lower ends for
drawer follows the old and well known conven
tional automatic locking of the lower drawers
when the upper drawer is at its inner position,
such'lock for the lower drawers being released
when the upper drawer is pulled out. Therefore,
The upper drawer illustrated at 33,‘, may as
shownin Figs. 14 to 18 inclusive, be disposed un
mountingon and between the sides of eachsup
port, and having an intermediate section extend
derneath a horizontal partition or bottom 34 at
ing inwardly from the end of the support provid
the upper edge portion of which the channel
guide ,for the door carrying carriages is secured.
With, suchuconstruction theupper drawer is pro
ed with a laterally extending arm passing over
the upper edge of said ?nger carrying armofthe
lever, vsaid member at its. innerfree. end termi
nating in an upwardly extending ?nger,. and .a
lock mounted on said supportat .theiopposite» end‘
vided with a keeper, shown as a plate 35 of ?at
metal, securedv at the upper, edge of the drawer
front and extending a short distance back there- _
portion thereof, includingpaikey. operated rotate.
of, having a hole 35atherein back of the drawer
‘front- The arm 23 of lever 2|, at its free end, is
ablebarrel, said side of .the support on which said
lever mounted having an are shaped slot therein,;anda pin eccentrically mounted on saidbarrel
extending through said slot over the upper edge
provided with a downwardly extending ?nger 36
which, when the lever 2| of which the arm 23 is
a part is turned to itshlocking position (Fig. 16)
passes through an opening 31 made in the. bottom
5 of the channel guide.
‘ ,Thepartition or bottom 34has a vertical open
.. of. the other armof said lever.
A construction asde?ned inclaimnlpand
spring means associated with. said member -and
the pivot carrying it, acting upon said member
tomove it toward thebottom of .said support and
ing 'therethrough in which a bullet catch con~
struction is installed. It includes a movable 30 press the laterally extending arm. thereof against
plunger 38, slidably mounted within a cylindrical
metal housing 39, the plunger 38 having an en
larged head at its upper end and passing at its
lower end through the bottom of the housing. It
is normally lifted to an upper position, as in Fig.
15, by a light strength coiled compression spring
the upper edge of the .?ngercarrying arm of
3. A construction as de?ned in claim 1, and a
second ?nger extending downwardly from the
other arm of said lever.
4. The combination with a pair of sliding
doors mounted in a guide member of a lock there
4|! around it within the housing. When the lock
for .comprising a lever pivoted between its ends,
is operated to turn the lever 2| to locking posi
a ?nger on one end of the lever adapted to
tion, as in Figs. 16 to 17, the lower end of the
?nger 36 presses upon the plunger 38, forcing it 40 engage one door, means acting upon the other
end of said lever to move said ?nger into en
downwardly into the hole 35a of the keeper 35.
gagement with said door, a second pivoted lever
This locks the upper drawer 33 against outward
having a ?nger movable into engagement with
movement, the locking occurring with the drawer
the other door, means coacting between the levers
at its retracted position.
If the partition of bottom 34 is not used, as may 45 to actuate the second lever by movement of the
?rst lever and spring means acting to move said
be the case in some installations, the upper edge
?ngers on said levers out of engagement with
of the front of the drawer 33 will lie directly un
said doors.
derneath the under side 5 of the channel car
5. The elements of claim 4 combined with a
riage guides. In such case, as shown in Figs. 19
and 20, a block 4| is permanently secured at the 50 drawer adjacent said lock and means actuated
by said ?rst lever for engagement with said
rear side and ?ush with the upper edge of the
drawer when the ?nger thereon is in engagement
drawer front, with an opening 42 in its upper side,
with said door.
positioned for the ?nger 36 to enter when the
6. In a display case having an entrance open
lock is moved to its operative position. The slid
ing at a vertical side thereof, an elongated guide
ing doors and the upper drawer, and through it
member having front and rear channel guides
the remaining lower drawers, in this manner are
‘for the length thereof, door carriages disposed in
all looked against movement by use of the single
said channels, vertical doors riding at their lower
lock construction disclosed.
edges, upon said carriages, said doors in position
The construction described is very practical,
readily produced ‘and assembled, easily installed, 60 to close said opening overlapping a short distance
substantially midway between the ends of said
is normally out of sight and does not appear ex
display case, a lock located in said guide below
cept to a minor extent when the ?nger 25 and 21
the lower edges of said doors and substantially
are moved to operative locking position. Such
midway between the ends of the guide, two mov
lock has proved very useful and practical in ser
ably mounted locking members carried by said
vice. The invention is de?ned in the appended
lock, manually operable key means for actuating
claims and is to be considered comprehensive of
one of said locking members, means ooacting
all forms of structure coming within their scope.
‘between said members to actuate the other one,
Iclaim: I
the movement of said members acting to lift
1. A look structure for holding vertical sliding
doors, disposed in separated but adjacent vertical 70 them from a normally lower position below the
lower edges of said doors to upper doors engaging
planes, from sliding movement with respect to
positions, one of said members being moved to a
each other, after they have been moved to a po
position at the inner vertical edge of one of said
sition in which, at adjacent vertical edges, said
doors and the other to a like position at the
doors overlap for a short distance comprising, a
supporting member having a bottom and up 75 inner vertical edge of the other of said doors
when said‘ doors are closed, one of said locking
members comprising a lever pivotally mounted
between itsends to turn about a horizontal axis;
having two arms extending in opposite directions
from said axis, one of said arms terminating in
an upwardly extending ?nger, the second of said
members ‘comprising a member pivotally mounted
at one‘ end and having an intermediate portion
manually operable key means for actuating one
of said locking members, means (coacting between
said members to actuate the other one, the move
ment of said members acting to lift them from
a normally lower position below the lower edges
of said doors to upper doors engaging positions,
one of said members being moved to a position
at the inner vertical edge of one of said doors
and the other to a like position at the inner
terminating in an upwardly extending ?nger,
said intermediate portion having a lateral pro 10 vertical edge of the other of said doors when said
jection extending over the upper edge of the
doors are closed, one of said locking members
?nger carrying arm of the said lever, said key
comprising a lever pivotally mounted between its
operated actuating means comprising a rotatable
ends, to turn about a horizontal axis and having
barrel and a pin extending from one end of the
opposite extending arms, one of said arms ter
barrel over the other of the arms of said lever,
minating in an upwardly extending ?nger, and
said pin being eccentrically positioned with re 15 the other of said arms terminating in a down
spect to the axis of said barrel, and means for
wardly extending ?nger, for the purposes de
simultaneously turning the other of said locking
members to upper operative position on turning
said lever to such position.
7. In a display case having an entrance open 20
ing at a vertical side thereof, an elongated guide
member having front and'rear channel guides for
The following references are of record in the
?le of this patent:
the length thereof, door. carriages disposed in
said channels, vertical doors riding at their lower 25
edges, upon said carriages, said doors in position
to close said opening overlapping a short distance
Mason __________ __ Oct. 31, 1911
substantially midway between the ends of said
display case, a lock located in said guide below the
lower edges of said' doors and substantially mid
way between the ends of the guide, two movably 30 Number
mounted locking members carried by said lock,
Kurtzon _________ __ July 15, 1941
Switzerland _____ __ June 16, 1932
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