US1691111A

US1691111A - Snap hook

Info

Publication number: US1691111A
Application number: US134471A
Authority: US
Inventors: John M Glaser
Original assignee: U S HAME Co
Current assignee: U S HAME Co
Priority date: 1926-09-09
Filing date: 1926-09-09
Publication date: 1928-11-13
Anticipated expiration: 1945-11-13

Description

Nav. 13, 192s. f 1,691,111

J. M. GLASER SNAP HOOK Filed Sept. 9, 192e /1 fr0/PME ks,

Patented Nov. 13, 1928. i t

UNITED ,-sifAijEs-PArENT oFfFice.

JOHN im Grinsen, or'l BUFiAno, :new Yonai, assIGNoRfroU. si t BUFFALO, NEW YORK.

'5 SNAP'HOOK.

Applieationgied september e, 1926` semaine. 134,471.

This invention relates to improvements in snap hooks of the spring` tongue typein Which i a bent strip of spring metal is secured inthe body of the snap hook and has a tongue which presses resiliently against the hooked end or` nose of thehook, and is adapted to be pressed awayv from the noseto permit the connection of the hook with, yandits disconnection vfrom a ring orV other member.

lThe bodies of these `hooks are usually made of malleable castings,`and it has ybeen usual in the manufacture thereof to cast the bodies with smalllu'gs 'or :parts A which,` after the spring has been placed in the body, arebent from the position'in which they areformed in casting to a posit-ion to secure the spring in 1 position 'and prevent its disconnection from the body of the hook.A The molding or cast.- ing of the body in this way Wit-hportions ,which afterward have to be bent into their final springfsecuring position` results in a very largepercentage of loss in manufacture.

The portionsfvvhich` have to be bentfafter casting are ordinarily made of smaller' cross section than theadjacent parts vof the device in order to properly define the bending points and facilitate the bending of these'parts Without undue distortion or deformation of 'the other parts ofthe body. Furthermore, `the lugs or parts vvhichrequire to vbebent Vto secure the spring in place arelobjectionable in Y ythat they detract from the neat appearance of the snap hooks and result in the formation of projections or partsy which are apt to mar,

I chafe or catch on the harness or objects with which the hooks contact in use.

Oneobject of the invention isto provide a practical or desirable snap hook which Will bev strong and durable, Which overcomes the above stated mobjection lin manufacture, .and

' which can be made With the minimum labor and economically, andis freel from parts which have to be bent fromthe positions in which theyy are originally formedf Other objects of the inventionare .to proparts of thebody of the hook, and is of such construction that While the spring cannotjbecome accidentallyfdisplaced inthefuse of the hook, nevertheless it `can be readily removed .in the eventthat spring'shouldbe broken'` or become so Weak not to bear firmly against the nose of the hook and eii'ectually prevent'the disengagement of the hookxfromV i the ring' or'other pa-rtjWitli which itis engaged;alsot`o provide a snap hook in which thel cheeksgor `side `Wallsl at the inner endvof 'the body `,are permanently i connectedl and` strengthened-by 'an integral cross bar around vents'the disengagement of the spring in the hook body can' be readily molded and the vvhichthebent spring passes and also by an 'i integral cross Wall or portion which is located i abovethe bent portion' of the spring andpref spring-'can beinserted into place `Without'lia-V bility of damage tothe spring; and alsotoprovide a snap hook `With a smooth, continnous back Which extends nearly to the'finner endof the body ofthe hook so as to strengthen the body and enhance the appearance of the hook, andr at the Sametime eliminate lugs or l projections which are apt to Wear orfcatch 'on j the harness or parts `With whichthehook may q Y, fi-u contact or rub against in use. 5 Y

In the accompanying drawings: i i Fig. l is a side elevation of embodying the invention.

Fig. 2 is a side view, partlyin-longitudinal y section and partlyin elevation, lof the snap hook. j

isa plan 'viewthereoi if Fig. llis a fragmentary, longitudinal, sec-` v1 tional elevation thereof onuan enlarged scale.

1.0 represents the body "of the'snap hook, f yvh1ch,`a`s usual, consists of amalleable cast-l` ingprovidedat one end with a hook or curved sin l nose portiony 11,l and preferably hasat the]` opposite or inner endthe usual vstrap loop 152 `by which thesnap hook isadapted to be se; i cured to a strap,` chain orthe like At itsinner portion, the body of the hook is provided with spaced 'side Walls or cheeks 13V which form'betweenfthem a cavity in which the bent inner end vof the springis confined, and which are connected above or infront of, said inner i portion of the spring by a `transverse-vva'lliorportion 14 which is formedintegrally with'. cts ythe CheeksVThe l j Ushape,comprising two arms or portions 16 andl'? connected 'by a bent or curved portion. The bentportion 'l and permanently conne spring is of substantially of the spring-passes around a spring stoppreferablyin the form of across bar v15 connecting i v thecheeks, the arm lfwhich forms the spring tongue extends outwardly beneath the transverse wall 14 with the free end of` the tongue adapted to bear against theinner end of theY nose 'of the hook, which, asV usual; is Vrecessed to form a seat for the free end ofthe spring tongue. spring isV provided with a rearw ardly Lturned extremity or hook 18 which hooks over a. transversev stop or shoulder 19 on the front 1 sideL of-the back wall 20. ofthe body. i The engagement otv thefhooked v end l19 y.of the springwith this shoulder 18preventsinward movement otthespring in the body and prevents ,the spring, fromy beingy forced-spout through-.the opening'between `the transverse wall-,14l andr theinn'erend of. thev back wall- The spring canbe Are adily placed` in', position inthebody by. inserting the twoarrns of the, springthroughv the open, inner end of the bodyabove and shoving the spring forwardly while depress .in gfthe: spring ,tongue until the A tree.end of the ytongue engagesberieath the nose of the, hook andthe hooked end 18 oi? the lower varm* 17 ofthe spring snaps over the shoulder 19,0n the `back of the body, thereby retaining they springin position. H l

Itzwillbe noted that the cross bar 1'51 around which the spring passesis of? comparatively small cross section, being decidedly smaller than theintern-al diameter of the bend ot' thespring, andis located substantially atthe inner rear, .cornerA ofthe .body and :well spaced; from the inner end of the back or bottom wall oi the spring cavity, sothatv a spacek or opening 21is leftbetween the crossbar and the inner end of the back. wall sufiicient to permit of the ready insertion of the liookedxshort armor1 the spring throughthis space without undue deflection or bending of the arm. The shoulder 19 with whichthe" hookedend ofthe/:short armtoff'thespring' engages is located for.- wardly fromthe innerfend-oi1 the backfwall ot n the body, andthe k:front face 'of the back wall i preferably slopes gradually upwardly vand orwardlyto said shoul'der,so thatwheninl serting the spring, the hooked endfthereot- .indicated yat 22.

will readily slide forwardly von this inclinedf` face ofthe back wall and snapV over the secur-V ing-shoulder with only'a moderate deflection `of the short arni otherspring. i The iront face of' the back wall also preferably slopes upwardly, forwardly; of theshoulder 1:94,'y as "The inclined face 22 facilitates the engagement otarpointedy tool'witlr thediooked end .of the spring :for disengagi'ng.

it'f'r'om the shoulderz19'. Ity will;also benoted that; the crossv wall -or port-ionlli; abovejthe bent portion of thespringisfwellspaced away` fromthe;` cross `barlt,andit does not overhang or' extend" inwardly over' the crossAbar 1 15'. vflhis.- leaves, a.k ,clearance` between. these` partssuchthat `the pattern `for the bodyy 'canlv be; properly drawngfromt the' mold, and Yit is;v

not necessary to use a core in'casting the body.

The shortv arm 17 of the below the crosslbar lland deiiect practically Afrom thefpoint of bearing of the hookedend of the short arm ony the shoulder 19, and since, thebent part of the .spring more or less loosely embraces. the cross.r bar 15, the spring has the maximum length of free portionadapted lto deflect in thefuse ot the snap hook, Zhilethe sprin'gr'is/thus se.

curely and firmly retained in position, and the t upper transverse wall or portion laY prevents l the .disengagement ofthespringtongue troni `the nose ofthe Yhook bythepullofaringer other member. outwardly agaifnst the inner side of thetongue, neverthelessthe spring canl be readily inserted-,into position inthe body, withou-tdeilecting the,y short arinofthe spi-ing enough to break orinipairtheresilience ofthe Y spring. However, iii, it; shouldbe necessary Y f 'for any'freason, sueltas the loss. odi resiliency ofthe spring, so-that the tongjuedoes notpr-ess firmly againstthe nosel of the hook, the spring` f, can be removed for replacement byA anew spring simply.; by disengaging the hooked' end 18. of; the spring from, thek shoulder 19, and e pushing; the spring;- o'ut through the' opening in the; inner enda of the hook body; hooked end ofthe spring can: be;v disengaged forthispurposeby mea-nsof a suitable pointedtool adapted to be inserted'between the side, walls or cheeks of the body- .`L spring can thus be removed and replaced by anew spring'y without; disconnecting the snap hook'froin the attached strap lor: lpart which; passes; through The,

causethe strapY isusually sewed or rivetedgin` the; loop 12,` and itis :often amatterofcon- I v siderable trouble or inconvenience for the user to detach and again; fasten thesn-ap hooklto thestrap. yNotwithstanding the adaptability of thev deviceforrthe rea-dy insertion and renewal of the spring, the kbodyy hasno lugs lor partsvwhich thave tobe bent or deformed to t isy s'eoureiyretained inytheb'ody against accif dental displacement, Furthermore, the backof the snaphookibody is smooth: and lunbroken tothe exposed, inner 'endzo the spring, which is substantially-flushwith the edgesrot the side Y i wallsat; the innerend ofthe'bodyf, and there are no l'lugs orzportions whichcair abrade lor catch on= parts ywith which the back of the hookmaycontacttinfthe use ofthey hook f I; claim-.asmy invention-zA loop atithe Opposite-,endend a-bent spring secured 1n said body and having a tongue f secure-the Vspring in place, and' yet the" springv A1 snaphook comprising abody havingy i al hooked nose yat one endgfand .y an attachingl said space, and said body having a continuous back wall provided on its front side between said side walls with a stop with which a hook on the end of the spring engages for retaining the sarino in alace in the body said spring' t a 9 i Q hook being held in engagement with said stop by the vresilience of the .spring and being adapted to be disengaged from said stop by flexing said spring.

2. A snap hook comprising a body having a hooked nose at one end, and an attaching loop at the opposite end, and a bent spring secured in said body and having a tongue whichbears resiliently against the nose, said body having spaced side walls at its inner end connected at their back inn'er portions by a crossV bar around which the bent portion of the spring passes and at their front portions by a transverse wall which is located above the inner portion of the spring tongue and extends nearer to said nose than said cross bar, the space between said side walls being unobstructed inwardly beyond said cross bar whereby the bent spring can be inserted and removed through said space, and said body having a smooth unbroken back wall provided with a front face sloping gradually forwardly and upwardly from its inner end and a shoul- Vder at the forward end oif'said sloping face with which a hook on the end of the springV engages for retaining the .spring in place in the body.

3. A snap hook comprising a body having a hooked nose at one end, and an attaching loop at the opposite end, and a bent springl secured in said body and having a tongue which bears resiliently against the nose, said body having spaced side walls at its inner end connected at their back portions by a cross bar around which the bent portion of the spring passes and at their front portions by a transverse wall which is located abovethe inner portion of the spring tongue, the space between said side walls being unobstructed inwardly beyond said cross bar whereby the benty spring can be inserted and removed through said space, and said body having a smooth unbroken back wall yprovided with forwardly and upwardly sloping iront faces interrupted by a shoulder with which a hook on the end of the spring engages for retainin grthe spring in place in the body.

4. A snap hook comprising a body having a hooked nose at one end, and a bent spring`secured in said body and having a tonguewhich bears 'resiliently against the nose, said body Vhaving' spaced sidewalls at its inner end, a

transverse bearing for said spring between said side wallsand aroundwhich the bent port tion of the spring passes and atransversefwall which connects said side walls and is located above the inner portion of the spring tongue,

'said spring bearing being spaced inwardly beyond the inner edge of said transverse wall, the space bet #een said side walls being unobstructed inwardly beyond said spring bearing whereby the bent spring can be inserted and removed through said space, and said body having a back wall provided on its front side between said side walls with a .stop with which a hook on the end of said spring engages for retaining the spring in place in the body.

5. A snap hook comprising a body having a hooked nose at one end, and a bent spring secured in said body and having a tongue which bears resiliently against the nose, said body having spaced side walls at its inner end connected at their back inner portions by a cross bar around which the bent portion of the spring passes and at their front portion kby a transverse wall which is located above the inner portion of the spring tongue, said cross bar being spaced. inwardly beyond the inner edge of said transverse wall, the space between said side walls being unobstructed inwardly beyond said cross bar whereby the bent spring can be inserted and removed through said space, and said body having a back wall prosaid spring engages for retaining the spring in place in the body.

.ioiiN M. GLAsER.