USRE14205E - Latch - Google Patents

Description

L. A. YOUNG.

LATCH., APPLICATION FILED MAY 6| ISLE.

Reiwwd 00h17, 1916.A

' yUNITED STATES PATENT OFFICE.-

LEONARD A. YOUNG, or HIGHLAND rank, MICHIGAN.

LATCH.

Specification of Reissued Letters Patent. Reissugd 005,17, 1916 Original No. 1,110,368, dated Septemberv 15, 1914, Serial No, 844,836, filed .Tune 12, 1814. Application for reissue filed May 6, 1916.

To all 'whom it may concern Be it known that I, LEONARD A. YOUNG,A

vented certain new and useful Improve! .ments in Latclies, ot' which the following is a specification, reference being had therein to the accompanying drawings.

In fitting doors, casings and other like parts which close upon each other, especially inl refrigerators, ovens or like places, it is desirable that means be used for yieldingly maintaining the closure against the containing frame in such manner that the point between the two is kept tight regardless of slight variations due to expansion or contraction of the parts from climatic changes and the like.

This invention relates to a latch and to an arrangement thereoi" whereby the door oiother closure to which it is applied is firmly held yieldingly and tightly against its jamb or casing, such contact being maintained even when the door or :traine swells or contracts.

The invention consists in the matters hereinafter set forth and more particularly pointed out in the appended claims.

In the drawings-Figure 1 is a View 'in iront elevation( of a latch embodying features of the invention showing a striker and catch in closed relation. Fig. 2 is a view in vertical section through the closed latch showing 'the same applied. to a door and door janib. Fig. 8 is a View in longitudinal section in detail oii-a casing. Fig. 41 is a view in detail ola bed plate and spring. Fig. 5 is a view in longitudinal section through' a modification of the latch showing one ot the catch members provided with a thumb piece. Fig. 6 is a' view in longitudinal section indetail showing a slight modification of the latch mechanism. Fig. 7 is a View in detail of; the spring, latch membersand bed plate of the modification. Fig. 8 is a view in4 transverse section through a spring, bed plate and adjacent parts. Fig. 9 is a view in detail of a striker member that likewise constitutes a` handle. Fig. 10 is a view in detail showing a modification ot' a casing. Fig. 111s a view in detail and in section thillough the modified casing, showing the relation thereof on the latch member.

Referring to the drawings, exterior position.

Serial No. 95,985.

v casing 1 that is formed or struck up of sheet metal or otherwise made of suitable material, has a pair of projecting guide lugs 2 on its t'ront tace whose adjacent convergent tac-es 3 terminate at the margins of a slot indicated. at 4L in the front wall. `The fianged base of the casing is adapted to be vapplied to the casing or jamb of a` door or the like on which the latch is mounted, and is arranged to retain a bed plate 6, screws or other fastening means that pass through openings 7 in the casing flange and registering slots 8 in the plate holding the parts in A Uvsliaped spring strip 9 is secured as by inturned ears l0 or the like to the base plate within the casing, the oppositely disposed arms having longitudinally disposed slots and the resultant -center tongue of each arm being shortened and inrolled as indicated at 11 for a bearing. A pair of oppo sitely disposed latch plates or toggle arms Q2 have recessed inner ends which'bear against the inrolled tongue portions 11 o'f .the slpirings, and abutting outer end facesA which are vin rolling Contact, the positive interaction of the parts being secured by seg mental gear teeth 19. and 13. A retaining ear or keeper 14 is formed on one of the Ymembers 11 in such relation thereto that' when the parts are forced inwardly past the line ot' the pivot portions 11 (the dead center line or pointof maximum resistance) the keeper tends to keep an inserted member, as for example, a striker 15 which is mounted by a suitably designed portion base '16 on the closure or door 17 to which the Vlatch is applied. A longitudinal slot 2A is formed in the casing to clear the keeper 111 when the arms are in outwardly projecting relation or in open position as indicated in Fig. 23, in which relation the outer wall of the casing 1 acts as a retainer to limit the movement of the arms. The portions of the spring 9 that extend beyond the pivot bearings 11 are inturned and act as parallel face guides between which the latch members are free to oscillate. The parts are further so proportioned that when the striker is guided into the slot 4 by the converging faces 3 of the guide lugs 2, and is thereby encountered and forces the latch members inward against the outwardly yielding arms o the spring, and the ,door 17 is co itacted with the Ajamb member, the latch members are still clear of a suitable opening in the casing, the handthespring'or base plateand because of the converging tendency of the spring arms exert an inward pressure upon the striker 15 and thereby close the joint between the door and 1 the jainb lunder all normal Working condiv- Ain such convenient relation to the casing that in a modilied forni of the latch Awherein one of the latch members has a thumb piece or lever-like extension 19 'extending through.

of the operator may grasp the handle 18 and with the thumb as a fulcrum`-pressing against the thumb piece 19 assist materially in unsnapping or releasing the latch mem bers.

In the modification 7 a link 2O having through an opening in one of the latch members and plays in a slot21 in the other acting as a guide to replace the extended portions of the main spring for maintaining shown in Figs. 6 and parallel sides passes ,the latch members in alined relation.

The casing may be so modiiied,`as shown in Figs. 10 and 11, that holder guide lugs 23 thereon completely house the/,latch'ineni-` bers, the longitudinal slot 24 of the other "not care to limit myself toany particular form or arrangement of parts,

What I claim is:

1. A latch comprising a striker, a casing provided with `guiding means for receiving the striker, a spring member in the casing having a pair of oppositely disposed arms, a pair of oppositely disposed latch members pivotally and detachably interlocking with the spring arms near the outer ends and in rolling contact nea-r their inner ends which lie in the path of the striker,a keeper on one of the latch members for engaging the striker, the latch members and spring cooperating to yieldingly maintain an inward pressure on the striker when the latter has passed the line of pivotal connections between the springv and the latch members, and means in sliding engagement with the latch members for maintaining them in alined relation. i

2.' A latch comprising a. striker,v a casing haring a receiving slot therefor, guide projections on the casing'adjacent the slot, a spring secured between its ends in the casand provided with oppositely extending arms., a pair of latch plates detachably -fularms With their inner end portions in rolle` ing contact in the path ofthejstrik'er, said;A .arms being adapted to gripjya"inserted striker andforce it yieldingly inw rd when lthe striker has passed the line of pivotal attachment of the latch plates andtsprings, and a thumb piece on one of the latch menibers 'extending through the casing on the side of the latch plate fulcrum opposite the guide slots. y

3. A latch comprising a striker, a casing provided with a guide way Jr'or receiving the striker, a spring mounted in Vthe casing having oppositely disposed` longitudinally slotted arms eachwith an inrolled middle tongue `forming a ulcruin bearing, a pair of latch plates each seated at its inner end against the ulcrum of a spring arm bctween the outer arms thereof, the' outer end portions of the latch plates being in rolling contact and in the path of the striker, and a keeper for retaining the striker. against the latch plates and forcing the striker inward when the latter has passed the line of the spring fulcrunis.

5 e., A latch comprising a striker, a casing,

having "av receiving slot' for the striker, a pair of oppositely disposed guide members for directing the striker into the slot, a spring member secured 'between its ends in the casing and provided with oppositelyT disposed arins, a longitudinal tongue formed from each arm and inrolled as a ulcrum bearing, a pair of latch plates, the inner end faces oi which are arranged to rock upon the fulcrum bearings and between they outer portions' of the spring arms, the outer end portions of the plates being in .rolling engagement and in the path oit the striker, and a keeper 'for retaining the striker against the latch plates and coperating. with the spring and latch plates to force. the

striker inwardly when. it has passed the line of fulcr'um bearings.

A latch comprising a striker, ai casing having a receiving slot for the striker, fi

pair of oppositely disposed guide members.

for directing the striker into the slot, a spring member secured between its ends in the casing and provided with' oppositely disposed arms, la longitudinal tongue formed. from each arm and inrolled as a tule-ruin bearing, a pair vof latch plates, the inner end faces of which are arranged to rock upon the fulcrgum bearings and between the outer portinns of the spring arms, the outer end portions of the plates being in rolling engagement .and in the path of' lcrumed near their outer ends on the spring the striker, a keeper :for retaining the striker against the latch plates and coperating with the spring and latch plates to force the striker inwardly When it has |passed the line of fulcrum bearings, and means loosely embracing the 'free arms or ,the latch members and maintaining them in alined relation.

'6. A latch comprising a striker provided with a handle and adapted to be secured to a closure, a casing provided with a guidewa'y for receiving the striker and adapted to be secured to a frame member for the closure, a bed plate mounted in the casing, a spring membcrsecured between the oppositely curved slotted end portions thereof to the bed plate, a latch plate ulcrum on each arm of the spring bridging a` longitudinal slot therein, a pair of oppositely disposed latch plates with the inner ends thereol rockag against the fulcrums between the side portions of the spring arms, the outer end portions ol the latch plates being in rolling contact and in the path of the striker, a keeper on one'of the latch plates adapted to grip the striker and to cooperate with the spring arms and latch plates to force the striker inwardly when the latter has passed the line of the spring Jtulcrums and a thumb piece extendingfrom the pivot end of one of the latch plates through an opening in the casing in manually operlati'vc relation to the handle f the striker.

7. A latch, having in combination, a pair ot' toggle arms maintained in toggle relation1 a keeper ou one oi said arms, means Vfor yiehlingly resisting the arms passing their dead center line, a thumb lever secured to one or' the toggle arms, a striker which may be caught and held by said keeper when the toggle arms pass the dead center line inwardly. and a handle attached to the striker which can be lused with the thumb lever to disengage the striker. l

8. A latch` having in combination, pair of toggle arms maintained inl toggle relation, a keeper on one of the toggle arms, a casing for housing the toggle arms and keeper and provided with an entrance opening and an opening in one end, a lever-like.

extension on one of the toggle arms protruding through the opening in one end of the casing, and a striker adapted` to pass through the entrance opening in the casing and be caught and held by said keeper when the arms pass the dead center line inwardly.

9. A latch, having in combination, a latch arm provided with a hook and pivotally mounted, means forgiving said latcharm a yielding thrust andtending to keep thel arm to one side or the other of the dead center thrust line, a thumb lever supportedby the member upon whichthe latch is supported and operating on the latch arm to assist in thrusting it by the dead center thrust line, a striker arranged to be caught and pressed inward by the hook of the latch arm,v and a handle in proximity to the thumb lever so that the two may be conjointly operated with one hand to disengage the striker from the latch arm.

Y l0. A latch, having in combination, a

'pair of toggle arms .one' of which 1s provided with a hook, means for tending to prevent the toggle arms passing their dead center, a thumb lever for thrusting the said toggle arms by the dead center, a striker arranged to be caught by the hook, and a handle carried on the member to which the striker is attached and operable in connection with the thumb lever with one hand by p ushing in on the thumb lever and pulling out on said handle.

11. A latch, having in combination, a latch arm provided with a hook and pivvotally mounted, means for tending to keep the latcharm on one side or the other of the dead center thrust line, a thumb 'lever osoillatingly supported on the member to which the latch arm is secured` the said thumb lever having connection With the latch arm so as to thrust the latch arm outward when the thumb lever is thrust inward, a striker, and a handle carried on the member to which the striker is attached and operable in conjunction'with the thumb lever by placing the thumb on the thumb lever and pressing in and pulling outward on the handle with the remainderof the hand. v f y In witness hereof I have signed the above specification this 27th day of April, 1916 at Detroit, Michigan.

LEONARD A. YOUNG.

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