US2520496A - Slider for slide fasteners - Google Patents

Description

Aug. 29, 1950 c. K. DEUTSCH 2,520,496

SLIDER FOR SLIDE FASTENERS Filed Feb. 15, 1946 INVENTOR ()swezs; A? 0507-103.

WK 21:1? AT RNEY Patented Aug. 29, 1,950

aegonos smnnnnon some FASTENERS; Q iat ea Damask ng.- Val ey... Application February 1 5, 1946; Serial No. 64 71881,: 2 than. an-1o.

This. invention relates; in general to. slide fl as. teners, and more. particularly. to. the slider ele; ment which. constitutes. the. opening. and-. closing; member of such fasteners.

An important object of. my-inizention. is toproe. vide a. slider for fasteners oiathetype mentioned with a. locking. element which firmly, secures the slider in any. adjusted. position and yet permits; the ready release. of the. locking element by. the mere. operation. of the-pull: tab. associated: with the. slider Another important; object of my invention is to. provide a slider which is separable. or adjustable; to permit easy IGIIIQVfiJKOf cloth or other material: that may be lodged: between the guide. plates at the slider.

The novel features characteristic of: my inven tion. are set forth with particularity in. the appended claims. The invention itself; however,

both as to its construction and mode of operation together with other objects-and advantages thereof; will best be understood by reierence to the following description taken incennection with the accompanying; drawing in which:

Fig. 1 is a view; in front elevation, on an enlarged scale, of; a portion ofa slide fastener embodving features or my; invention;

Fig. 2 is an exploded view, inperspective, show ing the component parts which constitute the slider according to my invention;

Fig. 3 is a side elevational; view oi the slider removed from the fastener and showing the slider in ke or adii stedpos t on;

Fig. 4 is a view similar to that of Fig. 3 but showing the sliderin unlockedposition; and

Fig. 5 shows a closed portion of the slide fastenerl. with the-slider removed, tobetter show the position of the locking prongs ordetents inrelan the astener.- lemee e.

Referring first to Fig. 1, the slide fastener co n; prises a pair of tapes or stringers I, which are. provided along. their opposed fastening edgee with the. usual beaded or corded edges 1 on which are mounted a plurality of fastener elements 3.. These. are. of; conventional type and comprise heads. having interlocking means, such as, pro; jections on the upper side and recesses on the lower side, and having also outwardly extending jaws 4 which are clamped on the beaded edges 2. The interlocking elements 3 are engaged or disengaged in a well-known manner by means of a suitable slider member generally designated 5.

Referring now to the remaining figures of the drawing, the slider 5 is seen to comprise a lower guide plate 6 provided with upwardly extending de flan es. t and: pper uide the t 2 2 lelil with downwe dm x nding side an es; 9s. he pwen ui e plate isifut liermended atone d] w h int ral-lv-tonmed1= wed-e es aoecl.

member itwhichsetresltoisepara e or disen a e themterlnck ne fastener eleme ts. u wardly extendine mom l e wedse fienata lim Lila threaded stud: lil-l rigidly retained The .upp rui e plate. aisformed with a app e.

ture 12 through. which, the sis-pd; Ill: adapted to extend, and on. the. linden surface. or this guide plate. there is pmvided; a transverse, dDWHWBIEdiX; extending rib, t3; which, is. aria-plied to." fit into, a transverse groove l4 formed in the wedge. it. Formed integral-lyrwith, orotherwise. attached to.

guideplate 8;, is. a longitudinally. extending. ridge; 7

l 5, and; adapted. to. overlie; the. ridge. is. a locking member- I Swhich isptvoted on. theridgebymeansof a rivet on pin ll! fenced.- intmregistering apertures t8 and. I591 in the ridge and: lockingmembem respectivelyi The part of the. locking. memben that overlies the ridge. is channel -shaped, as shown, to receivethe ridge, and formed integrally with. the-locking member at its formed end are a pain at pointed prongsor detents' 2-09-24 disposed one on each side wall. thereot and in staggered; relation. In. the upper guide plate. and also, in staggered; relation are provided a pair 0t apertures ne -2a, throughwh-ich the detents Ell -i l oi the locking} member are adapted to extend At its; end opposite to the dtentsi the locking member. in

formed with a ring-shaped part 24' which meansot a'ooi l 2 9 surrounding the post at and interposedbetween guide plate 8' and; ring N, theloehi-ng member W is urged, in the. illustrated position of the pull tab, to its locked position whereat. the detents 20, .2! extend through their respective apertures 22, 23 in the upper guide plate. As shown in Fig. 5, the pointed ends of the detents penetrate into the corded edges 2 of the stringers to provide positive locking means of the slider 5 with respect to the fastener.

In order to disengage the locking member to enable the slider to be moved in either direction, preparatory to effecting engagement or disengagement of the interlocking elements 3 of the fastener, the pull tab 26 is moved upwardly to a substantially vertical position, as shown in Fig. 4, and in so doing the locking member [6 is rocked about its pivotal point I! to the raised position shown by the camming action of the pull tab armextensions. 21, 27. on, the locking member ring 24. The slide is now free to be moved to a new position along the fastener, and upon the release of the pull tab, the action of coil spring 29 is such.

that the locking member and the pull tab are re- %turned to their respective positions as shown in ,Fig. 3. As often happens with slide fasteners of the general type herein described,.ithe.cloth or. other material to which the stringers are attached,

becomes lodged between ,lthe upper and lower guide plates, or between the fastener elements,

so that-movement of the slider-is difiicult and' I sometimes impossible. With a slide member embodying my present'invention'iit is a simple matter to overcome the above mentioned diffrculty.v One or two turns of the post by means of the pull tab 26 causes a sufilcient separation between the upper and lower guide plates to effect easy removal of the lodged material; after which the guide plates are returned to their normal operative positions by turning the post in the opposite direction. In extreme cases the guide plates may be completely separated from each other and then reassembled for use in the usual manner. l

Itisbelieved that the constructionand opera ation, as well as the advantages of my improved locking and separable slider,,will be. apparent,

from the foregoing detailed description. Itwill 1 also. be. apparent. that while I haveshown. and

described my., invention in a. preferred. form,v changes and modifications may be made; inithe.

structure, disclosed withoutmdeparting. from the spiritpf the invention,,.assought to be defined.

in theffollowing claims.

What I claim is:

1. A slider for a slide fastener of the type having interlocking elements attached to opposed stringers comprising separable upper and ,lower guide...p1 ates between which the stringers are,

adapted to be retained, said guideplates adapted to beslidably moved along thestringersto Cause 7 n a ement of th rlockinse e en s in e movement oftheguide. plates in one direction,

and their disengagement in the movement of the guide plates in the opposite direction, a threaded post, ca r d on e low reu de Plate, t e upper.- uide plate having an aperture throug which t e thr adedp st is da t d to ext nd, an 1 t n e ed c p co ati ith t e pos so t h n. tate i n di ect n o. a ome.

position the two guide plates are clamped to:

gether t a m t r orma a iv condition and when rotated in the opposite direction said guideplates are separable to varying de fi a emb s rovid d wit tentm an pivotally mountedon theupper guide plate, ,said

latter guide plate being provided with aperture means through which the detent means is adapted to extend and to engage the stringers to thereby lock the slider against movement with respect to the interlocking elements of the slide fastener, and a pull tab pivotally linearly mounted on the cap for moving the slider and for rotating the cap to thereby effect adjustment between the slider guide plates, said pull tab being provided with means which upon coaction with the detent member effects the release of the detent means frdm'its locked position.

2. A slider for a slide fastener of the type having interlocking elements attached to opposed stringers, comprising separable upper and lower guide plates between which the stringers are adapted to be retained, said guide plates adapted to beslidably moved. along the stringers to cause engagement of the interlocking elements in the movement of the guide plates in one direction and their disengagement in the movement of the guide plates in. the'opposite direction, the

upper guide plate. being provided with an aper-. ture at. one end, a threaded upright. post carried... at the corresponding end .ofvlthe lower guide, plate and extending; through the aperture of the upperguide. plate, a cap in threaded engagementwith the. upright post, said upright post and cap constituting means which in one position of adjustment of the can with respect to, the post, maintain the guide plates in a clamped operative position and in another position of adjustment of the cap With respect to the post, provides ad; justable spacing between said plates a member pivotally mounted at an intermediate :point on the, upper guide plate,,said member having de-i tent means at one end and a ring part atthe other, end which encirclesthe cap and upright po t, spri means sur ndin e can a d p: right st and t r os d w e t e ring t and the upper guide plate to urge the detent, means through. the aperture means in the upper uide plate for locking the slider against movement, .a pull tab pivotally mounted on said cap for operating the slider, said pull tab upon ro tation thereof causing rotational movement between said cap and post to, effect adjustment between the slider. guide plates and cam means,

formed on said tab which upon being raised to slide operating. position cause the cam means ton coact with thering part of the locking member to rock said member about its, pivotal pointto thereby eiiect itsrelease'. from the locked positlon.

CHARLES DEUTSCH- REFERENCES ,CITED The following references areof record in, the

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