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Oct. 22, 1946. M. VOITY ET AL 2,409,966. BLANK FOR USE IN THE MANUFACTURE OF SLIDERS FOR SLIDE FASTENERS Original Filed Jan. 14, 1942 2 Shéets-Sheet 1 v' IN VEN TORS Max/<1: Vol ry A 1v.) Oct. 22, 1946. M_ vQrrY'E-r AL 1 2,409,966 BLANK FOR USE IN THE MANUFACTURE OF SLIDERS FOR SLIDE FASTENERS Original Filed Jan. 14, 1942 2 Sheets-Sheet 2 INVENTORS 18 A4592”:- Vmvy HIVD ' GIoR$€ '51- GRIFFITHS BY ' @ Patented Oct. 22, 1946 2,409,966 UNITED STATES PATENT OFFICE 2,409,966 BLANK FOR USE IN THE MANUFACTURE OF SLIDERS FOR SLIDE FASTENERS Maurice Voity, Bayside, and'George A. Grif?ths, Kew Gardens, N. Y., assignors to Universal Slide Fastener‘Cog Inc., Long Island‘City, N. Y., a corporation of New York Original application ‘January 14, 1942, Serial No. 426,694, now Patent No. 2,384,144, dated‘ Sep ~ temberv 4, 1945. Divided and this application June 1, 1945, Serial No. 597,110 2 Claims. (01. 29-190) 2 ‘Thisrinvention relates to a ‘blank for use in the manufacture of sliders for slide fasteners. tinuation-‘impart "of ‘our application ‘Serial ‘No. 426,694; ‘and application‘Serial‘No. 490,406 for Method and means'for making sliders for~slide fasteners, ?led June‘ 11, 1943, which is a division “It has been the‘ practice‘ heretofore to perform some-or‘all of the operations incident to the manufacture'of sliders auponiindividual sliders or slider wing blanks. Due to the fact that the of application Serial 'No.‘ ‘426,694. In ‘the accompanying drawings in ‘which is shown one of the various possible embodiments of parts on which the operations are performed are very lsmall in dimension and large in num this invention and wherein like numbers“ refer to ber, such‘rnethods have had the disadvantage like parts throughout, ‘ of having relatively‘slow manufacturing speeds 10 Fig. 1 is a perspective‘view‘ of ‘a strip compris and high manufacturing costs. ing‘a'series of‘ integrally connected slider ‘wing It is a principal object of our invention to over blanks; come ‘these ‘disadvantages-by providing a slider ' 4‘ _ -‘ Fig.2 is‘a schematic perspective view in section of‘the dies employed to form rails and attach blank of such nature that up to the time that a slider is completelyfashioned'and ready for use, 15 ing portions on slider wing blanks, the same it is integrally connected to at least one other being illustrated at the beginning of a forming similar slider, whereby sliders are never indi stroke; vidually manipulated in the manufacture thereof. Fig. ‘3_is a schematic perspective view of a mill In this connection, a more speci?c object of ing'ldevice employed 'to trim fails on the slider our invention is to provide‘ a slider blank com prising ‘two pairs of slider wings, thewings in each pair being integrally connectedand han 20 wing blanks; ' ' ‘ “ ‘Fig. 4- is ‘a schematic perspective view in partial section of anapparatus for shearing bail lugs dled-together during all fabricating‘ operations and indenting’ lugs in slider wing blanks and for incident to their formation, and the pairs of cutting ‘off pairs of connected fully fashioned wings being interconnected at a‘ stage of the 25 slider wings; slider fabrication to form a slider blank essen tially consisting of a pair of integrally connected but ‘otherwise ?nished sliders so that up to the time the sliders are completely fashioned they still can be handled and worked jointly. ~Other objects of this invention will, in part, ‘ Fig. 5 shows top and ‘bottom perspective‘ views of ‘pairs ‘of connected, fully fashioned ‘ slider wings; > . . Fig. 6 is a perspective View of a slider blank together with welding electrodes employed in the. formation thereof; and l 4‘ be obvious‘and, in part, hereinafter pointed out. ‘Fig. '7 is a‘schematic‘perspective view in‘ section The invention accordingly consists in the fea of the-‘dies employed ‘to separate and size con tures of construction, combinations of elements, nected pairs ‘of sliders in‘a slider ‘blank. ' ‘ and arrangement of ‘parts which will be exempli 35 Referring now to the drawings, and more 'par ?ed in‘the construction hereinafter described, ticularly to’Fig‘J'I,‘ a slider l0 constructed in ac and of which the scope of application will be indicated in the claims. Certain featureslof our invention herein shown and described, but not claimed, are more fully shown, described and claimed in our‘following applications: application Serial No. 426,694 (is sued September 4, 1945, as U. S. ‘Letters Patent 2,384,144) for ‘Method and ‘means‘for ‘making sliders‘for‘slide fasteners, ?led J anuary‘ 14, 1942‘, of Iwhiclrthe present application is a division; cordance‘with our invention comprises an upper wing 12 from which a bail”; projectsland a lower wing 16. #Rails 18‘ run along the lateral edges of the ‘slider wings. ‘Between the diverging channels‘20,‘ the material‘ of each sli'der'wing‘is directed (downwardly to form a substantially , V-shaped vertical wall 22 which serves to de?ne theienga‘gemen‘t cam> employed in all ‘sliders‘of this type. Flat platforms 24 disposed at the base of the walls 22 ‘serve as‘atta‘ching portions which, when welded‘together, join the upper‘andllower application‘ Serial No. 446,062 (issued September 4, 1945, as 8. Letters Patent 2,383,999) for wings l2 and 16 of the slider and function as a Method‘ and means for making sliders for slide .50 fasteners, ?led June 6, 1942, which is a continu Various details may be incorporated in the’slid- ' ation-in-part of application Serial No. 426,694; er to enhance‘ its appearance, reinforce its struc application Serial No. 446,063 (issued September ture and provide‘ a‘ smooth sliding action. ‘For 4, 1945, as U. S. Letters Patent 2,384,145) for example, the edges 26‘ of the entering channel Method and means ‘for making sliders for slide and the edges 28 of the-diverging channels 20 fasteners, ?led June 6, ‘1.942, which is g, cm. 55 may be beveled. ' The outer endsof the platforms neck. ‘ ~ " 2,409,966 4 3 24 may project beyond the extreme ends of the diverging channels 2E! and may be smoothly rounded ‘off. A web .33 may be indented from material of the bail! l4, said web being disposed medially and longitudinally of the bail. To make the sliders Ill, a long strip of sheet metal of suitable composition. is ?rst blanked out, for example, in a reciprocatingpress, to form a strip 32 (Fig. 1) comprising a ‘series ‘of in tegrally connected slide fastener wing blanks 34. die block are cut away as at ‘58 to conform exactly to the shape of the edges 38 on the strip 32. Pilot posts @553 carried by a reciprocating head (not shown) cooperate with the said recesses 55 to insure proper registration of the pair 40 of wing blanks being worked in the apparatus 50. Slidably mounted in the die block 52 interme diate the recesses 53 is a pad 62 centrally aper tured at ?ll. The die block 52 is recessed from 10 the'top face to the bottom face thereof, to receive The shape of these blanks is governed ingeneral by the outline of the wings in the slider ultimately to be produced. In the preferred form of ourinvention illus trated herein, the slider wing blanks 34 are similar in shape to the slider wings ‘l2 and is, but are slightly broader in order to provide material for the rails l8. Each blank 34 is also provided with ' material 35 from which the neck and attaching said sliding pad 32. This pad conforms in shape to ‘the plan pro?le of a pair of slider wings l2 and it having a link d2 connecting the same betweentheir diverging channel portions. The shape of the central aperture 63 in the pad con forms to the plan pro?le of the diamond shaped : projection 48.’ Y ' Slidably and snugly received in said aperture Mi is'al'post at, whose upper surface E8 is of the same shape as the outer surface of the diamond portion, including the walls 22 and platform 24, can be‘ shaped. If desired, during the blanking shaped projection (is. Said post is ?xedlyv mount operation bevels 3e and 38 may be formed on the edges of the slider blank which will subse quently form the inclined edges 23 and 23 of the ed in the bed plate 5% by suitable means (not shown) and is, therefore, stationary with respect to the die block 52, but movable relative to the in each pair being integrally connected by a link of the block 52 to freely receive the portions of entering and diverging channels. 25 pad 62. A resilient block (not shownlis pro vided to bias the pad 32 upwardly. The slider wing blanks 34 are disposed longi Cut-outs '53 may be provided on opposite sides tudinally of ‘the strip 32 in pairs 40, the blanks the strip 32 not being worked upon when said will be completely sheared away. Although for 30 strip is depressed during drawing‘ of the rails IS. A punch '52, carried on the same movable recipro convenience ‘of handling, the individual slider cating head as the pilot posts ~39, is formed with wing blanks 34 in a pair of such connectedlblanks a cross-section similar to’ the pad 62, but is may be disposed in any desired position, we pref 42 which, during a subsequent stage of operation, erably connect the portions 35 of the wing blanks by the linksllz in order to facilitate the attaching operation hereinafter described. slightly narrower to accommodate the rails be tween'said punch and the walls of the aperture in which the pad 32 slides. An aperture 14 is vertically disposed in the center of the punch 12 to receive the elongated diamond shaped projec tion ii?'when said punch moves downover the provided ‘a link M for integrally connecting suc cessive pairs of wing blanks so as to form the 140 postl?iih The aperture 7% is larger than the‘ post 35, in order to accommodate the walls of the pro elongated strip 32. It should'be noted that both the links 42 and M are fullyqsevered‘from the Suitable feeding means (not shown) is provided strip 32 during subsequent operations'inthe for to intermittently advance the strip 32 between mation of the separate slider wings and sliders, strokes of the punch ‘l2. Since feeding mechaand that therefore these links may be caused In addition to the link 42 integrally connecting the Wing blanks 34‘ in a pair 40, there is also jection 48.- ‘ - ~ - V nisms common to the art are not accurate in their to assume any desired shape, or may- be omitted altogethen'and in which latter case the‘ slider movement, we may bevel ‘off the lower edges 16 of wing blanks 34 will be directly integrally con nected to each other. the pilot posts es in order to exactly position the strip .32’ prior to the rail drawing operation. , After the strip 32, of wing blanks 3A haslbeen made, the rails I8 are formed in a drawing op eration, such as. illustrated inrFig. 1. This op eration, as well as alllsubsequent operations, is When the‘strip is advanced, it preferably lies/on the upper surface'of the die block '32 ‘and may be guided in such position ‘by a combined guide and . preferably simultaneously performed on each wing blank ‘of apair-4ll of such blanks. The; Next, the rough edges as are‘trimmed off to re duce the rails ill to ‘their ultimate predetermined height. This operation may be performed inia machine 18 comprising a pair-of spaced parallel milling cutters 83, 82 which are rotated at a high speed to cleanly remove the extra railmaterial and leave no jagged edges which require’ further height of ‘the rails I8 thus formed “may be made greater thanv desired in the ?nished slider ll), no attempt being exerted to control the shape of the‘ upper rail surface. Due to drawing this upper ,railrsurface is considerably roughened along the outer edge thereof, as shown-at 46. At the same time the rails are drawn, elongated diamond shaped projections 48 are fashioned > from the material 35 of the wing blanks and from the links A2. Each end of an elongated diamond 38' is disposed in a different embryonic wing blank 34, ‘and‘said ends form the V-shaped walls 22 and platforms 24. ' Any suitable mechanism, as for example, the ‘ apparatus/53, may beused to carryout the draw ing‘operation. Said apparatus comprises‘ a lower . stationary ‘die block 52 mounted upon a bed plate 54.‘v The 'central-portionof said/die block iscut ~ awayto provide'a pair of opposedrectangular recesses 56v Whose corners near the center oflthe 75 stripper plate (not shown). , ,7 ?nishing. ' In‘ the next operation, each alternate- wing blank is provided, by a shearing operation (Fig. 4), with a lug lid whose central portion 86 isfree of theslider wing blank from which it projects. The ends 88 of the lug are integrally connected with the ‘said wing blank. Portions of‘the-cen tral parts 83 of the lugs are thereupon indented to provide the web Prior ‘to and during the indenting operation, the slider wing blank 34‘ on which the lug as is positioned, may be'?rmly gripped on its upper and lower surfaces; and die additionaily may be employed to limit the in.overnentv of the said centralportioniit during indentation and web forming-l r I - r 5 ‘2,409,966 Subsequent to formation of the web, we shear correct this, and to sever the connected pair of off sets or pairs 98 of now completed slider wings. sliders H) in such a slider blank I86 from each Each of said pairs includes one ?nished slider other, said slider blank is cut in half (Fig. 17) and, wingl? having a bail projecting therefrom and optionally, at the same time sized, whereby to one ?nished slider wing i 5 without a bail. At this dispose the slider wings l2 and I t in parallel, time the said pairs 86 have'the appearance shown properly spaced relationship,and to align the in Fig. 5. It should be noted that the two con rails I8. nected ?nished slider wings of anypair‘i! of such The severing and sizing operations may be car wings are not used together to make a slider I ll, ried out in an apparatus H5. Said apparatus but that each wing in said pair will be used with a 10 comprises a reciprocating head (not shown) Wing from another pairto form a slider. which carries a punch H2 and a stationary bed The lug forming, indenting and shearing op plate‘mot shown) on which a die block II4 is erations may be carried out by an apparatus 92 mounted. Said block has a rectangular recess comprising a stationary bed, a reciprocating I i6 which slidably receives a pair of pilot posts head, and an intermittent feeding means for the 15 H8 integralv with the punch M2 to accurately strip 32 (all not shown). Said head carries a position the slider blank It prior to separating punch 94 for shearing out the lug 8d. The head the pair of sliders IS in said blank. also carries means for moving a pair of indenting Disposed on each side of the recess H6 are a dies at toward a lug 8d which has been previously pair of cut-outs I20 in which the slider blank sheared out by the punch 911. A die block 98 co 20 we is positioned. The walls of the cut-outs operating with the indenting dies 96 limits down which lead toward the recess IlB are angularly ward movement of the central portion v86 of the inclined to conform to the angle of the slider lug and causes the bail Ill formed by said dies to wings de?ning the diverging channels 20. The' assume the desired con?guration. The recipro cut-outs are made deep enough to substantially cating head also carries a shearing punch Illll 25 fully receive the slider blanks IE5. Elongated which cooperates with a stationary anvil (not narrow grooves 122 are formed in each of the shown) on the bed to successively cut off pairs cut-outs I20 to receive the bails I4. A ?nger I24 90 of the ?nished slider wings from the end of projects into the recess H6 from each one of the the strip 32. cut-outs no to provide an anvil cooperating with It may be pointed out here that the blanking, 30 the operative portion IZG'of the punch IIZ. Said ' rail and diamond forming, rail trimming, and portion !26 is concavely shaped, as illustrated, to bail forming operations may be performed as a conform to the desired outline of the free end of continuous process on a strip from which the the platform 24. pairs 96 are ?nally sheared or they may be sepa While the punch H2 is descending, sizing rately performed upon a strip which is reeled 35 plates I28 are moved inwardly into the entrance up after each operation. ' The pairs 90 of connected ?nished slider wings are arranged in groups of two, as illustrated in channel of each of the sliders Ill. Said plates may be actuated from the reciprocating head of the apparatus IIB by any suitable means. 'The ends of the plates I28 are bifurcated to form di Fig. 5, with the rails facing each other and the diamond shaped projections G8 in registration. 40 verging ?ngers I30 shaped to the desired inner Said diamond shaped projections then are contour of a portion of the diverging channels 28. abutted and welded together (Fig. 6). It is par When the head which carries the punch I I 2 ticularly pointed out that by disposing the at has fully descended, it will clamp the pair of taching portions 35 of the wing blanks 34 in prox imity, we are able in a single welding operation 45 sliders I8 which have been severed from ‘each other between the said head and the die block involving only one pair of electrodes to simultane H4, with the ?ngers I28 disposed inside of the ously weld together four slider wings and form a slider and thus accurately size the sliders to their slider blank 166 comprising two integrally con desired ultimate shape with the Wings parallel nected fully fashioned sliders. The welding apparatus is schematically indi 50 and the proper distance apart, and the wings and rails in alignment. While this sizing operation cated in Fig. 6 and may be of any form suitable is of aid in bringing the slider to its ?nal cor for the purpose. , rect size and shape, the slider has nevertheless As illustrated, said apparatus comprises a pair already been completely fashioned. and said siz of spot welding electrodes “82, IM and holding operation is not embraced within the term ‘ means (not shown) to position two pairs 98 of 55 ing “forming” as used herein. finished slider wings in the manner shown in It will thus be seen that we have provided said ?gure; that is, with the rails I8 facing each a slider blank and method for making and using other and with an upper wing I 5 not having a bail the same, pursuant to which the several objects facing a lower’wing I2 with a bail. ‘ The welding operation results in the formation 60 of this invention are achieved, and which is well adapted to meet the conditions of practical use. of what is herein referred to as a blank 566 for As various possible embodiments might be use in manufacturing sliders for slide fasteners, made of the above invention, and as various more brie?y called a “slider blank,” and is to be changes might be made in the embodiment above distinguished from the slider wing blanks 31! set forth, it is to be understood that all matter hereinbefore referred to or from the pairs ?ll of herein set forth or shown in the accompanying completely ?nished wings. Said slider blank, as drawings is to be interpreted as illustrative and clearly shown, comprises two pairs of spaced not in a limiting sense. parallel completely fashioned slider wings, each Having thus described our invention, we claim integrally connected by a neck, the necks them as new and desire to secure by Letters Patent: selves beinrr integrally connected, whereby to 1. A slider blank comprising two pairs of spaced form two sliders iii joined by a piece Hi8 of ma parallel completely fashioned slider wings, each terial comprising a pair of links 42. wing having a plane body portion with rails run During the welding operation the slider wings forming part of the slider blank IE6 may be ning along its lateral edges and extending away from the plane of said body portion, and each slightly angularly moved out of parallelism. To 75 wing having an attaching portion raised above 2,409,966 7 from the plane of said body'portionand each wing :having an attaching portion raised above said body portion-and extending in the same di immediately adjacent and being integrally oon~ rection as said rails, each attaching portion lying neoted to the other attaching'portion of the same ‘immediately adjacent and being integrally con pair, the attaching portions oi?v one of said pairs nected to the other attaching portion of the same being integrally connected to the attaching por pair by 'a-link; the attaching portions of one of tions of the other of said pairs, the Wings and said pairs being integrally connected to the at attaching portions being in alignment and the taching portions of the other of said pairs, the rails being opposed. 2. A slider blank comprising two pairs of spaced 10 wings and attaching portions being in alignment said body portion and extendingv in the same di rection‘ as said rails, each attaching portion lying ‘ parallel completely fashioned slider wings, each wing having a plane body portion with rails run ningalong its lateral edges and extending away and the ‘rails being ' opposed. MAURICE VOITY. GEORGE‘ A. GRIFFITHS.