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Патент USA US2136662

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Nav. 15, 1938.
L. L.. ANDERSON
2,136,662
REFMGERATOR LATCH
Filed Oct. 18, 1937
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NOV» l5, 1938~
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l.. |_. ANDERSON
'
R'EFRIGERATOR
LATCH
Filed oct. 18, 1957
’
2,136,662
`
_
2 sheets-sheet 2
Patented Nov. 15, 1938
e 2,136,662
UNITED STATES PATENT f oFFicE
2.13am
nEFniGEnA'roa LATCH
Lloyd L. AndersonfGrand Rapids, Mich., assign
or to Winters & Crampton Corporation, Grand
ville, Mich., a corporation of Michigan
Application October 18, 1937, Serial No. 169,632
10 Claims. (Cl. 292-64)
This inventionrelates to latches adapted to be
ed by an integral cross member 8. _The pivot pin
used in holding doors in a closed position. The
6 extends through the arm ‘l at one end and
latch of the present invention is of particular
utility for use with refrigerators, though not lim
near the opposite end a pin 9 extends through
ited to refrigerator use alone.
It is a primary object and purpose of the pres
ent invention to produce a very useful, practical
and efllcient latch at a low cost of manufacture
and with a. utilization of a minimum number of
parts in the construction of the latch. A further
object of the invention is to provide a latch in
support on which it is permanently mounted. Ul
The latch bolt, pivot pin .6, the pin 9 and the
structure comprised of the parts 1 and 8, in eñect
provide a toggle, the knuckle of which is at. the
which the release thereof is accomplished
through a veryshort movement of the holding
means which maintains the latch in its operative
l5v latched position, thereby decreasing the size of
the latch and the size ofithe supporting structure
on which the >movable latch bolt is mounted, re
said arms 'l and also through the sides 2 of the
pivot pin 6.
'
Between the head 3 and the pivot pin 6 a rela
tively heavy coiled compression spring I Ii‘is lo
cated, the inner end thereof passing over the re
duced end II of a spring locating member which
is mounted on the pin 6, while the opposite end
passes over a projection I2 which extends in
wardly from the head 3 of the latch bolt. The
latch bolt head 3 and the pins 4 attached thereto
sulting in greater economy of manufacture and are thus permitted an inward longitudinal move
` ment with respect to the pin` 6, the extent of
simplicity in structure and operation.
20
The invention may be understood from the which is governed by the length of the slots 5.
following description taken in connection with Such movement is resisted by the coiled spring I0.
The latch bolt in its latched position is dis
the accompanying drawings, in which:
, .
Fig. 1 yis a fragmentary lhorizontal section posed against the web I of the support with the
through the free edge portion of a refrigerator axes of the pins 6 and 9 disposed in a plane sub
25 door and the adjacent door casing, showing the stantially parallel to said web I, as in Figs. 1 and 25
latch which is mounted on the door in plan view. 3. The head 3 of the bolt is received in a U
shaped guide including a cross connecting por
Fig. 2 is a vertical elevation and section sub
stantially on the plane of line 2-2 of Fig. 1, tion I3 and spaced apart legs I4. Said legs lie
looking in the direction indicated by the arrows. inside the sides 2 of the support and permanently
30
Fig. 3 is a longitudinal section through the secured by spot `welding or other equivalent con 30
latch.
`
Fig. 4 is a similar section with the latch bolt
in retracted position, and
Fig. 5 is a section taken substantially on `the
35 plane of line 5-5 of Fig. 3, looking in the direc
tion indicated.
Like reference characters refer to like parts in
the different> views.
_
nections. The latch bolt therefore may be re
tracted in two ways. One, by direct inward move
ment with a compression of the spring I0 and
the other, by a pivotal movement of the arms 1
in a counterclockwise direction about the pin 9,
thereby breaking the toggle `and moving to the
position shown in Fig. 4.
In each of the sides 2 of the supporting mem
1n the construction of the latch, a supporting ` ber of the latch, slots I5 are cut each including
40 housing of channel form is provided, having a an oiïset portion I6 connected with the longer
web I and spaced apart sides 2, the free edge part o'i the slot by an inclined slot portion (see
portions of which are turned outwardly at right Fig. 3). The offset I6 of the slot is located near
angles, making ñanges 2a through which screws est the pivot 6 and directly in front thereof. A
or other suitable fastening devices are passed to
45 secure the latch to the door. The latch bolt corn-k
prises a latching dog or head 3 to the opposite
sides of which metal bars 4 are permanently se
cured adjacent one end and extend inwardly be
` tween the sides 2 of the support. Said bars 4 at
pin I1 passes through said slots and extends be
tween and through the sides 2 of the support and
is adapted to traverse the slots from the position
shown in Figs. 1 and 3, to a position to the right
thereof. At one of the edges of the slots the met
`al which is struck from the sides 2 of the support
50 the end portions thereof farthest away from the
head 3 are longitudinally slotted for a distance,
as indicated at 5.
is pressed outwardly, making ledges I8, one for 50
each slot (see Fig. 1) to minimize the effects of
A pin 6 extends through the slots B on which,
between the bars 4, a member is pivctaliy mount
55 ed comprising two spaced apart arms ‘l connect
of the slots.
wear on the pin I1 in its movements lengthwise
,
Spaced apart links I9, connected by an integral
cross member 20, are connected with the pins 6
ss
2,180,662
and I1, the pins passing through opposite ends
the said sides 2. ’I‘he plates in effect are bell
of said links. A coiled tension spring 2I of rela
crank levers, the pivot 30 being at one end of
tively light strength is located around the pin 3 one of the arms of said levers and the other arms
and has one arm 22 thereof bearing against the of said levers lying against the pin I1, as in Fig.
web I of the support and the other end 23 bearing 3. ` A pin 3i connects the two plates 29 at the
against the pin I1,»thereby tending to move said elbows thereof a short distance to one side of the
pin I1 to the left (Figs. 1 and 3) intothe offsets ' pivot 30. A‘yoke 32 is connected with the pin
I3 of said slots in the sides 2.
3| at one end and at its opposite end to a push
When the latch bolt-is in its operative latch
rod 33 which passes through the front side of the
10 ing position, as shown in Figs. 1 and 3, the links door 24 and into a space to receive it made in
10
I3 are disposed at right angles to a line con
a handle 34,' attached to the door, which has a
necting the axes of the pivots 3 and 9. The pin web 35 between its side edges reaching to the door
I1 bears against the outer sides of the offset por
and into which the pin 33 extends. A coiled spring
tions I3 of theslots Il, providing a positive stop 36 surrounds the pin within said web. A push
against breaking of the toggle lever from the po
bar 31 has flanges 38 lat its inner edge, the nar
sition in Fig. 3, to that shown in Fig. 4. But by rower portion of the pushl bar extending through
moving the pin I1 along the shorter offset por
a slot in the handle 34; _The outer end of the
tions I3 of the slots, the stop against breaking pin 33 comes against the inner side of the push
the toggle is-rendered ineffective, and the pin I1 bar 31. An inward movement of the push bar,
traversing the inclined portion of the slot breaks caused by pressing against it 'with the handy of
the toggle toward the position shown in Fig. 4, the operator, compresses the spring 31, moves the
. ’thereby retracting the latching bolt head 3 as is pin 33 inwardly, turns the plates 29 in a clock
evident.
wise direction about the pin 30, and thereupon
As shown in Fig. l, the latch having the struc
moves the pin I1 to the right vand out of the
ture described is mounted on and within a door, , shorter offset portions I6 of the slots I5, break
25
such as a refrigerator door, which door is hing
ing the toggle of the latch structure, whereupon
edly mounted at one of its vertical edges on the
the door will be swung open and the latch bolt
take the position shown in Fig. 4. When the
latch bolt is released from its keeper and the door
is opened, a release of the push bar 31 permits 30
the spring 36 to move it to its outer position and
which passes over the front side of the adjacent the spring 2| will cause the latch parts to swing
door casing 21 of the refrigerator; and on which back to the initial position shown in Fig. 3. On
a cushioning gasket 23 of rubber is secured which closing .the door with the parts of the latch in
is compressed when the door is closed and the l such position, the inner cam side of the head 3
bolt has engaged with the keeper 23 on the door rides over the inclined cam side of the keeper 28,
refrigerator, the latch being mounted adjacent
the opposite vertical edge so that the bolt head
3 may project beyond the edge of the door back
of the outwardly extending lip 25 on the door
frame, thereby providing a tight seal against
the entrance of warm air and the escape of re
frigeration. With the head 3 of the bolt engaged
with the keeper and with the parts of the latch
in the position shown in Figs. 1 and 3, the door
is held securely in closed position and cannot be
opened until the pin I1 has been moved to the
right in the slots I5. A slight movement only
45 of the pin I1 or until it has moved only sufil
cient to break the toggle outwardly and started
it toward the position shown in Fig. 4 is required,
whereupon _the compressed cushioning members
the bolt head 3 with the attached bars 4 moving
bodily inward with a compression of the spring
I0 until the nose of the head of the' latch bolt .3
passes by the nose of the keeper, whereupon
spring I0 projects the latch bolt outwardly to
have the head 3 thereof engage in the keeper re
cess, as in Fig. l.
From the foregoing description the construc
tion and operation of the latch which I have
produced is evident and may be clearly under
stood. The latch structure is made chiefly from
sheet metal parts which are readily stamped and
23 exert their force against the outer side of
the bolt head 3 to move it still farther from the
initial position shown in Fig. 3 to‘that shown in
Fig. 4, whereupon the bolt is withdrawn from
engagement with the keeper, the inner end of
the plates 4 yforming a part of the bolt following
formed by dies. 'I'he assembly is simple and
easy. 'I'he throw required to releaseI the latch
described. One means is shown for efi'ectivelyl
moving said pin I1` to release the latch and there
by permit the door to be opened. It is, however,
to be understood that such releasing means is
one` only of a large number of manually operable
releasing means which may be used with the
latch structure disclosed; and that the invention
breaking*- so as to release the latch bolt from
the kèeper is simple, yet particularly practiöal,
bolt is reduced to a minimum, and the i'lnal re
traction of the ílatch bolt is helped and in many
cases provi’dedlsolely Aby the force of compres
sion of the ygasket V2li, which is compressed when
the path of an arc about the axis of the pivot 9. . the door is -latched `in closed position. The tog
The invention in this application is directed
gle structure of Ithe latch and the abutmentl or
primarily to the latch structure which has been stop
means employed to prevent the toggle from
65 is not in any sense to be restricted or limited
to the particular latch bolt releasing means shown
in the drawings and now about to be described.
As one form of bolt releasing means, two plates
23, preferably of the form shown. are pivotally
70 mounted on a pin 30, the axis of which is sub
stantially in alinement with the axes of the pins
3 and I1 when the bolt is in operative latching
position (Fig. 3). Said plates are located at the
inner sides oi the sides 2 of the support and the
is pivot pin 33 therefore at its ends is mounted on
effective, and economical to build. f
.
'
60
_ 'I'he invention is defined in the appended claims
and is not to be limited other than may be
necessitated by the terms of such claims.
1. A latch structure comprising, a support hav 65
ing spaced apart connected sides, a latch bolt
guide between said sides of the support and 1o
cated at one end thereof, a member pivot-ally con
nected at one end to and lying between the sides
of the support, said pivotal connection beingA
adjacent the opposite end of the support, a latchv
bolt pivotally connected to the inner end of
said member and guided in said guide, said bolt
and member normally lying in substantial aline
ment, a second member pivotally connected to 7gy
3
2,186,662
the same pivot which connects the first member
and bolt and normally extending at right angles
to the bolt and connected first member, the sides
of said support having slots therein, a pin ex
tending through the free end portion of said sec
ond member and seated at its ends in‘and adapt
ed to traverse the slots,> the material defining
said slots furnishing an abutment against which
the pin bears when the latch bolt yand first
member are in alinement with each other, thereby
preventing movement of the latch bolt and con
nected member, and said Íslots being formed with
angular portions adapted to be traversed by said
pin whereby said latch bolt and iirst member may
15 be moved,> as specified.
2. A construction containing the elements in
combination defined in claim 1, combined with
a third member pivotaily mounted on and be
tween the sides of the support and adapted to
20 engage with a side of the pin, the pivot of said
third member being in substantial alinement with
the pivotal connections of said latch bolt and
said secondv member respectively, and means for
manually turning said third member against the
26 pin to move said pin in said slots and thereby
free the latch bolt and connected member for
movement. ,
3. A latch structure containing the elements in
combination defined in. claim 1, combined with
30 a torsion spring surrounding. the pivotal mount
ing of said ñrst member, the ends of said spring
-bearlng against said pin and against the support
respectively; thereby tending to return the latch
bolt _and said members connected therewith to
initial position.
f
4. A latch comprising, a support having spaced
apart sides connected at one edge by a web, a
latch bolt guide carried by and between the sides
of the support adjacent one end thereof and
from the web whereby the web forms a
40 ‘spaced
part of said guide, a latch bolt comprising a
bolt head and parallel bars connected one at
each side of the latch bolt and extending in
vwardly therefrom between the sides of the sup
45
port, the inner end portions off-„said bars being
longitudinally slotted, a' membercomprising two
spaced apart sides connected by a cross bar piv
otally mounted at the outer ends of said sides
on and between the sides of said support and
adjacent the opposite end thereof, said sides eX
tending to and between the bars of the latch
bolt, a pin extending through the inner ends of
the sides of said member and through the slots
in said bars of the latch bolt, a coiled compression
spring interposed between said pivot pin and the
bolt head, a' second member comprising two
spaced ,apart sides connected by a cross bar piv
otaily connected to the ends of said pivot pin
and normally extending at right angles to said
web and to said latch bolt, a pin passing through
the opposite ends of the sides of said second
member, the sides of said support having slots
‘ through which the end portions of said pin pass,
said slots containing two sections substantially
parallel to the plane of the web connected by
annular sections, the inner end portions of the
slots being nearest to the web and locatedM so
that when said last mentioned 'pin is at :the
inner ends of the slots its axis and the axis of
the first pin arev located in a plane’ substantially
perpendicular to the plane of said web.
5. A construction containing the elements in
combination defined in claim 4, said sides of the
support at the edges of said slots farthest awayl
from the web having outwardly extending bear
ing ledges for said second pin.
6. A construction containing the elements in
combination deñned in 'claim 4, combined with,
pivotaily mounted manually operable means for
engaging against said second pin and moving it
in said slots, as and for the purposesspeciiled.
7. A latch structure comprising, a support hav
ing spaced apart sides, a latch bolt guide be
tween the sides of the support and located adja
cent one end thereof, a member pivotaily con
nected at one end adjacent the opposite end of
the support and lying between the sides thereof,
a latch bolt pivotaily connected to the' inner end 15
of said member and guided in said guide, said
bolt and member normally lying in substantial
alinement, a second- member pivotaily connected
at the pivotal juncture of the first member and
bolt and normally extending substantially at right 20
angles thereto, a pin extending through the free
end portion of said second member, said sides
of said support having slots therein through
which the pin extends, and the material denn
,ing said slots providing an abutment against 25
which the pin bears when the latch bolt and ñrst
member are in alinement with each other, there
by holding the bolt against movement.
8. A construction containing the elements in
combination defined in claim '7, combined with 30
pivotaily mounted manually operable means for
.moving said pin in the slots to free the latch
for movement.
9. A latch structure comprising, a support hav
ing spaced apart sides, a latch bolt guide secured
to and between said sides-of the support adja
cent one end thereof, a member pivotaily con
nected at one end to and between the sides of
the support adjacent the opposite end of said
support, a latch bolt pivotaily connected to the
inner end of said member and guided in said
guide, a second member pivotaily connected to
said latch bolt and ñrst member at the pivotal
connection thereof and adapted to normally ex
tend at right angles to said latch bolt and first
member, interengaging means at the opposite 45
end of the second member and the sides of said
support for holding all of the members in a posi
tion against movement, and manually operable
means for releasing said interengaging means
whereby the latch bolt may be tilted and re-y 50
tracted in said guide.
10. A latch structure comprising, a support
having spaced apart sides, a latch bolt guide car
ried between and at one end of the sides, a mem
ber pivotaily connected at one end adjacent the
opposite ends of said sides, a latch bolt pivotaily
connected to the inner end of said member and
guided in said guide. said latch bolt and member
normally being'located in alinement and provid
ing a toggle structure, a second member pivotaily
connected at one end to said latch bolt and first
member at the pivotal connection thereof, inter
engaging means- on said second member and the`
support for lholding said second member in a
position substantially at right angles to the
length o1' said, latch bolt and first >member when
the same are in alinement, and manually oper
able means for moving said second member to
thereby release the latch bolt and permit it to
tilt and move lengthwise in said guide, as
specified.
`
Y
’
LLGYD L. ANDERSON.
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