Патент USA US2136662код для вставки
Nav. 15, 1938. L. L.. ANDERSON 2,136,662 REFMGERATOR LATCH Filed Oct. 18, 1937 Zó 29 l ,la l Sigi.. ’ó _. 'ia 1 ` l0 4a i@ " /ß 2 Sheets-Sheet l NOV» l5, 1938~ l 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.