US2160879A - Slider - Google Patents

Description

June 6, 1939.

B. P. LAWSON SLIDER Filed Dec.

INVENTOR. -95wdaall$=1auzsan ATTORNEY.

Patented June 6, 1939 I alanine TENT joFrlcE;

sunnn Birdsall P. Lawson, New York, N. Y., assignor to Ideal Fastener Corporation, Brooklyn, N. Y., a corporation of New York Application December s, 1937, Serial No. 1so,21o I 4 Claims. (Cl. 24-205) This invention relates to improvements in sliders for slide fastener assemblies incorporating fastenerelements or scoops mounted in offset relation with respect to the tapes, 5 Broadly, it is an object of this invention to pro,-

' vide, in a slide fastener assembly, wherein the fastener elements are mounted so as to normally rest in a plane angular with respect to the plane of the tape, for a-slider of a construction and operation as to provide for interlocking and separation of the fastener elements on respective tapes in the transverse plane of the tape and that of the slider common thereto. t Specifically, it=is an object of this invention to provide for a novel construction of the lead end of a slider, whereby the slide fastener elements angularly mounted with respect to the transverse plane of the tapescarrying the same, acted upon.

bythe slider, are displaced-into the transverse plane of the tape and the'slider, both being com- "mon, as-the fastener elements enter into. the

channels or guideways .of the slider, thus providing for the disposition of the fastener elements in a. requisite :plane' for interlocking or separation-by and within the slider.

These and other advantages, capabilities and features of the invention will appear from the 1 Figure3 is a'frontelevation partially in section a taken along lines 33 of Figure 1.

Figure 4 isga' perspective view of the slider. j .40 Figure 5 is .a plan viewlookingupwards of the U slider. I

Referring to the reference characters in the drawing, numeral :10, represents a slider reciproeating upon cooperating stringersl Ia and I lb,- r 45 the flexible tapes 12a 'andIZb ofrwhich carry scoops Ila and Ilb,--said -scoops:being clamped as shown inFigure 2'fof -thei drawing to theflexible beads 13a and I 3b at the' ends of. the tape.

As is indicated in Figure 2, the central trans- 50 verse plane of the tapes In and I2!) is horizontal:

' shaped to 'providea cut-out in; the :nature ofar- 'for the purpose "of the embodiment herein illustrated, while the scoops Ila and Ilb, as clamped ,to the beads of the tapes, have their transverse central plane normally at an angle with respect 55 to that of the-tapes; the transverse plane of the slider is the same as that of the tapes, here being horizontal.

As'shown in Figure 3, the scoops Ila and Ilb when interlocked through the mating of their I male and female cooperating elements I5 and I6, 5 are desired and required to be in a horizontal central transverse plane parallel to that of the tapes I21; and I21). i

As shown in Figure 1, which presents a worms-eye perspective view of the stringers as 10 the same are acted upon by the slider III to interlock or separate the same, the upper-portion ,of

said view shows the normal positioning of the opposing stringers with the central transverse plane of the scoops at an angle to the central transverse plane of the tapes carrying thesame, while at the lower portion of such view the interlocked scoops have their central transverse plane parallel to that of the tapes and the slider.

As shewn in 1, 4 and 5, the slider con- 20 sists of a plurality of opposing wings I! and I8, here shown as formed by stamping or die-casting, the upper wing I'-I being narrower than the lower wing. I8, the being united atone end by an integral connector post I9 adjacent which 25 there is disposed a separator member. 2!! of triangular formation, to provide a plurality of divergent channels 2Ia'and 2Ib havinga slightly larger and symmetrical cross-section than the scoops passing therethrbugh, and having afhorizontal transverse plane, the diverging channels leading into a single or merging channel 22, so as to provide for the'usual interlock and separator action, whereby opposing stringer series Ila and Nb may be interlocked or separated, dependent upon the directional reciprocation of the slider.

A handle portion 23 :forming an integral extension of the connector post I9 extends above wing I! and across the length thereof, and-upon which. handle thereyis mounted'thetab -2l for 40 permitting the gripping and actuation of the slid- .ers in thedesired direction.

The lower 'wing I8 has upstanding walls 25a v andg25bjof heightapproximately that of the scoops Ila and-Ilb; while the, upper. wing I1 is 4:5

faces of wings I1 and l8 are symmetrical and in parallel: planes; except that. the lower wing I 8 I is 60 21a and 21b defining the cut-out being bevelled or inwardly curved. The upstanding wall formations 25a and 25b'of the wing it have a flared contour at their extremity, providing contacting edges or projections for tripping the scoops, as will be later described.

As shown in Figure 1, as the slider i0 is displaced in the direction of the arrow, the leading edges or projections 28a and 28b of the walls 25a and 25b ofthe lower wing are adapted to contact with the upper portion of the clamping arm as at29a and 29b of the scoops Ma and Nb and as the slider is moved, to displace the scoops mounted in spaced'relationship on the resilient tape, so that each of the scoops is displaced from its normal transverse central plane angular to the tape to a central transverse plane parallel to the tape; the cut-out segments 26a and 26b being of such extent that none of the remaining surfaces of the scoop, contact or impinge upon any surface of said lower wing during such angular displacement of the scoops; thereafter, the

scoops being in the transverse plane of the slider channels, further movement of the slider causes directiveguida'nce of the scoops in the channels .251: and 25b of the lower wing, are to a progressive decreasing degree displaced or twisted from .the angular-central transverse plane with re ,spect to the tape to a plane less angular, with .the result that as successive scoops are contacted by the contacting edges 28!; and 28b at the leading end of the wing I8, the scoops are more nearly in a position so that their central transverse plane is parallel to the normal tape plane; with .the result that the scoops as: they enter into the divergent channels 2 la and 2lb between the wings, are in the proper horizontal central trans- 7 Verse plane desired for interlocking, which said interlocking takes place as the scoops of respective stringers passing the separating. post de- "fining the divergent channels and enter into the single channel 22 where, they are presented with a central transverse plane parallel to the corresponding plane of the tape and of the channels of the slider.

It should be pointed out that conversely, when the slider is reversed in its motion to-that direction shown by the arrow of .Figure l, the interlocked scoops as they are separated by the separator post in passing from the merging to the diverging channels, and attain that zone of the lower wing l8 defining the cut-out segment, the tension on the tapes having been released, return to their normal angular position with relation to their central transverse planes and that of the tapes.

' It is obvious that various changes and modifications may be. made 'to the details of construction without departingv from the general spirit.

snare ing a body portion formed ofopposing wings, one above the other, spaced to provide diverging channels merging into a single channel, said channels having their axes parallel to and below the transverse plane of the tapes, and means on one of said wings at the leading end of the diverging channels for displacing the scoops from the normal angular position aforesaid to that wherein their central transverse planes are in parallelism to that of the tapes upon actuation of said slider.

2. In' combination with flexible interlocking stringers incorporating scoops normally mounted in a central transverse plane angular to that of the flexible tapes carrying the same, a slider comprising upper and lower spaced wings and a post connecting the same to provide diverging channels merging into a single channel, the channels having their axes parallel to and below the transverse plane of the tapes, and formations on the lower of said wingsat the leading end of the diverging channels defined thereby, and acting on the scoops upon entry of the same therein, for

displacing such scoops from their normal position aforesaid to one wherein their central transverse plane is parallel to that of the tapes, upon actuation of said slider.

3. In combination with flexible interlocking stringers, incorporating scoops normally mounted in a central transverse plane angular to that of a plurality of spaced wings, and a post connecting the same to define diverging channels merging into a single channel, said channels having their axes parallel to and below the transverse plane of the tapes, one of the wings at its end defining the diverging channels having a cut out formation and a projection thereadja'cent, the other wing extending opposite the projection and a cut out formation, the projection on said -the tapes carrying the same, a slider comprising first named wing serving on displacement of the slider to contact with and act upon a scoop entering into the leading end of the diverging channels as the same rests above the cut out formation of said wing to displace said scoop from its angular planeof mounting on the tape aforesaid to that wherein its central transverse plane is in parallelism to that of the tape.

- 4. In. combination with flexible interlocking stringers, incorporating scoops normally mount .ed in a central-transverse plane angular to that of the tapes carrying the same, a slider comprising upper and lower wings and a post connecting the same to define diverging channels merging into a single channel, said channels having their axes parallel to and below the transverse plane named wing serving on displacement of the slider to contact with and act upon a scoop entering into the leading end of the diverging channels as the same rests above the cut out formation of said wing to displace said scoop from its angular' plane of mounting on the tape aforesaid to that wherein its central transverse plane is in parallel ism to that of the tape.

' BIRDSALL P. LAWSON.

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