US1798148A - Latch - Google Patents

Description

March 31, 1931; A, EKMAN *1,798,148

.LATCH Filed April 8. 1929 2 Sheets-Sheet l Z v INVENToR. e/ indre/r 7mm ATTORNE,

March 31, 1931.` A, EKMAN 1,798,148

LATCH Filed April 8, 1929 2 Sheets-Sheet 2 I Ummmlnnrfm Patented Mar. 31, 1931 UNITED STATES;

PATENT? OFFICE;

ANDREW nxrrAN, or; en -AND RArrDs;lurenICTJAN,V AssIeNon ro GRAND. RAPIDS BnAss COMPANY, orl GRAND nArrDs, MrcnrGAN LATCH Application filed. April, 1929.. Serial Nzo. 353,318,

The main objects of this inventionl are First, to provide a reversible latch Well adapted for refrigerators and the like, which is very simple in structure and at the same 5 time strong and durable.

Second, to provide a reversible latchj in which the bolt'is automatically locked inl its retracted position to be: released engage,- ment with a tappet as the door i-s swung to 1e Closed position.

Objects pertaining tojdetaijls and. economies of my invention will definitely appear' from the description to follow. The invention is defined in the claims.

A structure which embodies the features of my'invent-ion isclearly illustrated in the accompanying drawing in which;

Fig. 1 is a fragmentary front elevation of a refrigerator door and casing having a latch 2o and keeper applied thereto in operative relation, the latch casing being shown in section to disclose the arrangement of parts therein, the boltf pivot also being shownl in section..

Fig. 2 is a fragmentary front elevation corresponding to that of Fig. 1 with the latch in 'retracted posit-ion.l

Fig. 3 is a :fragmentary view partially in section` on line of Fig, 1.

Figlie is. a fragmentary side elevation. with 3 0 the parts in the positionshown in Fig; 2.

Fig. 5 is a detail section on a. line corresponding to line 5.-5, of Fig. 3,.

a In the accompanying drawing 1 represents a refrigerator casing and 2.a door. The latch housing 3 is-provided with attaching flanges et and with a base plate Thev front Walli` otthe housing has an elongatedV opening 7 therein. while the rear Wallv has, an opening 8. The lever-like-bolt- 9, irs-arranged; through both oi; these, openings.. .The bolt. is provided with a' handpi'eee 10 at, its rear end.` and. with a strike engaging roller ll 'at its front end.

The bolt 9 has an elongated. pvot engag- :ing opening 12 coacting with thepivot 1301i the housings@ that the bolt has a pvotaland longitudinal. movement on the pivot, fpvot isf arrangedthreu a tongue-like Sunporlt' ,la which. is, formed ystrking. in tion of: 'the rear Wall 1.5 'of vthe housingin 50 the.; @Peeing .1S tlfrerem pivot is provided with a head 16. and is upset at 1.7 into the base plate,A .constituting a tie or securing member for the base plate. The` pivot is thus effectively supported Without detacingthe top of. the housing. v

Thev bolt. is provided with a longitudinal 21,. thereby forming spaced fulcrum points 23 upon which the toggle member rocks. rThe inclined portions 22 engage the abutment when the latch is in retracted position as shown in Fig; 2.

Thecross portion. of the toggle member is of such length that the side Walls of the housingy serve to limitV its lateral movement, the end of the toggle member engaging the side Wall, during the initial movement ofk the bolt from its central position. i

The strike 24. is provided with a down- This, toggle member 19 has a; flat Wardly andy inwardly inclined. face 25 with which. the` roller 11 engages,.acting to draw the, door against` its jlambp The strike is provided. with a tappet 26v With. which the bolt engages in they eventV of the door being closed with the latch in retracted position. This tappet has a rearwardly and dou'n- Wardlyinclined face 27 so that the end of the holt issvvungdownwardly tobreak the toggle and the bolt forced into engagement with the` keeper by means of the Spne By this arrangement of.' parte the Parts may be of substantial size, evenin a compact Structure. Furtlfier,`- comparatively few parts are required-and. they are arranged. S0 that thereisf a minimi-wwf Wear thereon.-

'heveg'llhsirated ,and described .my improvements embodied in lfefr'geratcr latches Myf interamente are hQWeveh' pivot whereby the bolt is supported for piv-V otal and longitudinal movement, said bolt having a recess open to said pivot, a coiled spring arranged in said recess to engage said pivot, and a toggle member pivotally mount ed on said bolt to engage the front Wall of the housing, the housing engaging a face of said toggle member having a-tlat central portion and inclined portions at each end thereof, the side walls of the housing coacting with the ends of thetoggle member to limit its lateral movement whereby the bolt is yieldingly held in a central position or at either end of its stroke.

2. In a latch, the combination of a housing having openingsin its front and rear walls, a pivot carried by said housing, a bolt arranged through saidV openings and having an elongated pivot Vopening engaged by said pivot whereby the bolt is supported for pivotal and longitudinal movement, said bolt having a recess open to said pivot, a coiled spring arranged in said recess to engage said pivot, and a toggle member pivotally mounted on said bolt to engage the front wall of the housing, the housing engaging face of said toggle member having a flat central portion and inclined portions at each end thereof.

3. In a latch, the combination oi a housing having openings in its front and rear walls, a pivot carried by said housing, a bolt arranged through said openings and having an elongated pivot opening engaged by said pivot whereby the bolt is supported for pivotal and longitudinal movement, said bolt having a recess open to said pivot, a coiled spring arranged in said recess to engage said pivot, and a toggle member pivotally mounted on said bolt and'having an angled face engaging the 'front Wall of the housing.

Il. In a latch, the combination of a housing having openings in its front and rear walls, a pivot carried by said housing` a bolt arranged through said openings and having an elongated pivot opening engaged 'by said pivot whereby the bolt is supported for pivotal and longitudinal movement, said bolt having a recess open to said` pivot, a .coiled spring arranged in said recessto engage said pivot and bolt, and a member pivotally mounted on said bolt at thefront of said bolt pivot and having spaced fulcrums disposed on oppositesides of its longitudinalcenter to engage the front wall of the housing.

'5'.*In`a latch-,the combination of a -housing, a pivot carried by said housing, a bolt projecting from said housing and having an elongated pivot opening engaging said pivot whereby the bolt is supported for pivotal and longitudinal movement, said bolt having a recess open to said pivot, a coiled 'spring arranged in said recess to engage said pivot, and -'a toggle member pivotally mounted on said bolt and having spaced fulcrums Vengaging the :tront Wall of 'the housing, the side walls of thehousing coacting with the toggle member to limit its lateral movement whereby when both the ulcrums are engaged with .the wall of the housing the bolt is held yieldingly in a. central position, the fulcrums being positioned so that the axis of the pivot for the toggle member to the bolt Vswings across a plane through the axis of thev bolt pivot and the fulcrum point when the bolt is swung to and from retracted position.

6. In a latch, the combination of 'a housing, a pivot carried by-said housing, a. bolt projecting from said housing and having an elongated pivot opening engaging saidpivotwhereby the bolt is supported foi-pivotal and longitudinal movement, said bolt'having a recess open tosaid pivot, a coiled spring arranged in said recess to engage said pivot, and a toggle member pivotally mounted on said bolt and having spaced fulcrums engaging the front wall of the housing, the t'ulcrums being positioned so that the aXis of the pivot for the toggle member to the bolt swings across a plane through the axis of the bolt pivot and the fulcrum point when'tlie bolt is swung to and from retracted position. v

7. In a latch, the combination with a support, of a bolt mounted on said support for pivotal and longitudinal movement, an abutment on said support, a toggle member pivotally mounted on said bolt in spaced relation to its pivot and in the planeotl the Vlongitudinal center of the bolt and provided with spaced ulcrum points disposed on opposite sides of its longitudinal center and coacting with said abutment, and a spring engaging said bolt and acting to urge said toggle against said abutment.

8. In a latch, the combination with a support, of a bolt mounted on said support for pivotal and longitudinal movement, an abutmenton said support, a'toggle member pivotally mounted on said bolt in spaced relation toits pivot and in the lplane of thelongitudi nal center of the boltV and provided with spaced fulcrum points disposed-on opposite sides of its longitudinal centerand coacting with said abutment,` and a spring acting to Y `125 urge said toggle against said abutment.

9. In a latch, the combination with a support, ofabolt mounted'on said support for 'pivotal and longitudinal movement, an abutment-onasaid support, atoggle member pivotally mounted on said bolt in spaced relation l1'30 Y to its pivot and in the plane of the longitudinal center of the bolt and provided With a fulcrum coacting with said abutment, and a spring acting on said bolt to urge said toggle member against said abutment, said fulcrum being positioned so that the axis of the pivot for the toggle to the bolt swings across a plane through the axis of the bolt pivot and the fulcrum point when the bolt is svvung to and from retracted position, the toggle member being provided with abutment engaging portions at each side of its ulcrum.

l0. In a latch, the combination with a housing comprising atop and an integral side wall, a portion of said Wall being struck inwardly to form a bolt opening and providing a pivot support, said pivot support having a pivot opening therein, a bolt, and a pivot for said bolt arranged through said Z0 opening in said support and provided With a head disposed between the support and the top of the housing.

ll. Ina latch, the combination of a support, a bolt mounted on said support for pivotal and longitudinal movement, a toggle member pivotally mounted on said bolt, an abutment on said support with Which said toggle is rockingly associated, said toggle having an angled abutment engaging face, and a spring coacting with said bolt to urge said toggle member against its abutment.

l2. In a latch, the combination With a support, of a bolt mounted on said support for pivotal and longitudinal movement, a toggle member pivotally mounted on said bolt in spaced relation to said bolt pivot and in the longitudinal center of the bolt and provided With spaced ulcrum points engaging said support, said support being provided With parts coacting With the ends of the toggle member to limit its lateral movement, and a spring coating with said bolt to urge said toggle member against its coacting abutment on said support. In witness whereof, Ilhave hereunto set my hand.

ANDREW EKMAN.

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