US2577674A

US2577674A - Method of and means for making flexible pocket receptacles

Info

Publication number: US2577674A
Application number: US740860A
Authority: US
Inventors: Douglas J Broughton
Original assignee: Buxton Inc
Current assignee: Buxton Inc
Priority date: 1947-04-11
Filing date: 1947-04-11
Publication date: 1951-12-04
Anticipated expiration: 1968-12-04

Description

D. J. BRouGHToN 2,577,674

METHOD OF' AND MEANSFOR MAKING FLEXIBLE POCKET RECEPTACLES Dec. 4, 1951 4 Sheets-Sheet l Filed April l1, 1947 INVENTOR .5oz/az A5 fiawral ATTORNEYS D. J. BROUGHTON 2,577,674

` 4 Sheets-Sheet 2 Dec. 4, 195.1

METHOD OF AND MEANS FOR MAKING FLEXIBLE POCKET RECEPTACLES Filed April ll, 1947 Q1. .4.4.4 4 444... QQQQQQQQQQQQQQQQQQQ Q .QQQQQQQQQQQ QQQ Dec. 4, 1951 D. J. BRoUGHToN 2,577,674

METHOD 0E AND MEANS FOR MAKING FLEXIBLE POCKET RECEPTACLES Filed April 11, 1947 4 Sheets-Sheet 3 ATTORNEYS Dec. 4, 1951 D. J. BROUGHTON METHOD OF AND MEANS FOR MAKING FLEXIBLE POCKET REOEPTACLES Filed April 11, 1947 4 Sheets-Sheet 4 l @Q /j.

INVENTOR y a ATTORNEYS folded one over the other to close the receptacle the end sections initially swing flatly into spaced planes with their free edges in spaced coincidence. When the slide fastener elements arebrought into interengagement by operation of the slider 6 the narrowing of the tape connections at and,

adjacent the corners and alongthe end edgescause the portions of the cover to which the narrowed tape portions are attached to be drawn toward each other and(r out of their norma] planes, against the bending resistance `of 'the cover, with the result that the narrow portion of .the tapes are placed under increased transverse tension. As shown the narrowing ofthe tape is carried across the free ends of the cover sections from corner to corner, but it will be understood that the narrowing may be confined to the corner portions or extended, as founddesirable to impose transverse tension' to the tapes Where needed.

This arrangement, byfwhich the tapes at the corner portions, at least, are placed-under increased tension and the adjacent edges of the cover portion are bent closer together, has many advantages over prior constructions and vovercomes the several diculties which have heretofore prevented a more general use of this type of receptacle. Because of the narrowing of the connecting tapes at and adjacent the corners and the imposition of greater transverse tension at these portions the tendency of the fastener members to be drawn inwardly beneath and between the edges of the cover is resisted and the fastener members are kept away from the contents of the receptacle. Moreover, as the fastener elements are brought into engagement, the'increasing pressure imposed by the cover sections on the contents tends to prevent displacement of loose cards or the like in the receptacle during the fastening operation, further guarding against-interference with the interengagement of the fastener members by the contacts and resulting damage to the latter by the fastener teeth. The attractiveness of the appearance of the receptacle is greatly enhanced and the receptacle is more easily insertable in the pocket since the thinner corners or edges nd their way more readily into a pocket opening and between papers or other' articles which may be already positioned in the pocket.

In order to realize the maximum efficiency of operation and attain the fullest advantage of my novel construction it is essential thattheslide fastener be symmetrically applied to the cover so that the transverse folding zone'9 about which the end sectionsl swing is exactly centered and at right angles to the adjacent edges of the Cover in order that the edges of the overfolded Lend sections shall 4coincide when the fastener is closed. Otherwise the receptacle will have an unsightly twisted appearance when the receptacle is closed and a sliding movement will be imparted to the moveable contents as the slide fastener is operated.

In Figs. 6 to 15, I disclose a novel method and device by which my improved receptacle can be When the end sections 8 are' constructed to secure its maximum beneflts.

As shown in Fig. 6 the extended ends and the edge portions of the tapes 3 of the slide fastener, the fastener teeth being in engagement, are rst 5 coated on their outer face with a suitable adhesive such as a rubber cement, as indicated at It. The edge portions of the inner face'of `the cover I are also coated with cement as at II. With the fastener teeth still engaged the cemented faces of the extended end portions I2 and I3 of the tapes are stuck to the inner face of the cover, the intermediate portion of the closed fastener forming a free loop above the inner face of the cover as shown in Fig. '7. In this manner the ends of the slide fastener may be very accurately positioned on the transverse centerline of the cover and the tapes are positioned and held in the relation to each other conforming to the closed position of the fastener members.

After the ends of the tape have been secured in position as described, the slidefastener is opened, as shown in Fig. 8, and the cover is placed on the top of an assembly device generally indicated at I 4. This device comprises a plate or block I5 mounted on a suitable base or supporting member I6. r A As perhaps best shown in Figs. 12, 13 and 14'the peripheral facespf the block I5 which are at right angles to the surface of the block are formed with grooves I'I. The upper surface of the block lies in a plane and conforms in size and shape to the cover I of the receptacle-being made. The groovesl I1 open to the surface of the blocks at points equally spaced from, and on opposite sides of, the transverse centerline of the surface of the block and of the cover placed thereon, as indicated at I8 and I9, this spacing conforming to the desired position of the fastener teeth 5 at the ends of the folding zone of the coverVV when the cover is'unfolded and flat withv the end sections 8 lying in a common plane. Theblock is recessed at 2U to accommodate the slider 6 of the fastener and the terminal openings I9 lie on the curve of this recess. Y

The depth and height of the grooves I'I conform substantially to the thickness and height of the teeth of the fastener the extension of the lower shoulder 2| of the groove (Figs. 13Vand14) preferably being at least the full thickness vof the teeth while the extension of the upper shoulder 22 is slightly less to accommodate the thickness of the tapes, that is the depth of the grooves is at least equal to the extension of the interengaging teeth from the surface of the tapes, and the height of the groove is at least equal to the height of the teeth. v

The spacing of the upper edge of the grooves from the face of block I5 accurately determines the width of tape between the teeth of the fastener and the edges of the cover in the nishedproduct as will be later more fully explained.

v With parts on the block as shownin Fig. 8, the teeth of the fastener are seated in theV grooves il as shown in Figs. 9 and l0 and thereby held 65 in spaced relation from the edges of the cover.

The length of the grooves II correspond closely to the length of the series of teeth- 5 carried by the tapes, and the teeth, once seated in the groove are held therein by the tension of* the 70 tapes. While the interengageable teeth members are held by the grooves the upstanding cemented edges I3 are snugly folded onto the.

tapes being worked or crimped downiaroundl the;V

After the tapes have thus mnagement-around.

the edges,-, the.- ends I2- ofthe tapesare pulled free fromr `the cover, (the nature of'l the rubber cement'perniits this to be done) and repositfned in crossed formation as showrrfiirlig. 151;' reducthe'y '.zrimpingY needed at these points-and givihgf a better alignmen1t=Vv to' the sliderteeth ati-thefadjae'entendsof thegrooves |1.f"`- Y The liner sheet 2 is next cemented over the folded edge portions of the tapes and on the inner face of the cover. sheet.

The parts needed to make up the inner elements of the receptacle are next cemented in position on the liner. As shown these comprise two spaced end section Wall members 24 each having a flap member 25 extending from its upper edge and folded downwardly between the member 24 to which it is attached and the liner, and two pocket forming members 25 superposed one on each of the end section wall members 25. The Flaps 25 are each formed with -a slit 21 (Figs. 1 and 11).

The

members

24, 25 and 26 are cemented to the liner and each other only along their outer Y end edges and along the bottom edges of

members

24 and 26. The interengageable members 5 are now released from the grooves I1, the assembly is removed from.the block and the single line of stitching 4 is run around the edge of the case as shown in Fig. 1 to permanently secure the edge portions of the cover, tapes, liner and inner wall members together. An intermediate wall member 28, having its end portions inserted between members 24 and flaps 25 completes the wall assembly, the member 28 being formed with extensions 29 which are inserted through slits 2'! as shown at the left in Fig. 1, to permit the member 28 a limited longitudinal movement. The tapes 3 with their fastener teeth 5 are now tuned upwardly as shown in Fig. 5 to reverse their position in relation to the surfaces of the cover and bring them into position for operation of the slide fastener.

As is apparent from Figs. l0, 13 and 14 the spacingof grooves I1 from the top of the block varies, being closest to the top of the block adjacent the corners and across the end. This spacing determines the spacing of the fastener teeth from the edge of the cover and with the teeth snugly seated in the grooves I1 during the folding down .and cementing of the tapes to the cover, as previously described, the fastener members are very accurately applied and secured in the `position to effect the desired drawing together of the corner and end portions of the cover as previously described. The assembly is effected much more rapidly and with far greater accuracy than would be possible if the tapes were to be applied solely by eye.

The tension of the tape and the engagement l of the interengaging elements 5 in the groove I1 is normally suicient to hold the fastener elements in position but if desired spring clamp means such as are shown at 30 in Fig. lrmay be associated with the block I5.

ends?? f'lthetapes' on 'opposite sides; of said? line'r andwith the ends eff the rowfornterengaged eleme off the fastener accurately aligned with.

said line, opening the fastener, positioning each tapel around the periphery off tlie= adjacent half of' the cover; with the interengageable elements carried" thereby positionedbelow andl spaced from the edges" of the cover and with the free. edges` of kthe tapes*4 extending upwardly above the inrier'fade'fi thec'o'v'er", holding the interengag'e able elements fixed in. said` spaced relation from the' 'edges 'ofi the cover; folding the upstanding edge portions of the tapes onto the inner face of the cover and cementing said portions to said face while the interengageable elements are so held.

2. The method of assembling a slide fastener with the cover of a flexible pocket receptacle which comprises, adhesively coating the edge portions of the inner face of a shaped cover sheet, adhesively coating the end extensions and the edge .portions of the outer face of the tape members of a closed slide fastener, securing said end extensions to the inner face of the cover sheet at opposite ends of the transverse center line of said sheet with the adjacent ends of the tapes positioned on opposite sides of said center line and with the ends of the row of interengaged elements of the closed fastener accurately aligned with said line, opening the slide fastener, positioning the cover sheet on a support havinga plane surface with the inner surface of said sheet uppermost, positioning the portion 0f each tape intermediate its ends around the periphery of the adjacent half of the cover sheet with the interengageable elements carried by the tapes positioned below and spaced from the edges of the cover sheet and with the free edges of the tapes extending upwardly above the inner face of said sheet, holding the interengageable elements fixed in said spaced relation to the surface of said support, the said elements which underlie the corner rand endedge portions of the cover sheet being positioned closer to said surface than at the remaining edge portions, and folding the upstanding edge portions of the tapes vover onto the cemented edge portions of the cover sheet while the interengageable fastener elements are so held.

3. A device for assembling a slide fastener with the cover of a flexible pocket receptacle which comprises, a block having a plane surface shaped to conform to the shape of the sheet forming the cover of the receptacle, said block having a recess at one end of its transverse center line to receive the slider of the fastener and having a groove formed around the periphery of veach end half thereof, the respective ends of said grooves opening to the surface of the block on opposite sides of said transverse center line, the upper shoulders of said grooves being spaced from the upper surface of the block a distance substantially equal to the desired spacing of the interengaging elements of the slide fastener from the edge of the cover in the finished receptacle, the height of the grooves being at least equal to the height of said elements and the depth of said grooves being at least equal to the extension of said elements from the tapes by which they are carried.

4. A device for assembling a slide fastener with 'the cover of a flexible pocket receptacle which comprises, a blockV having a yplane surface shaped to conform to the shape of the sheet forming the cover of the receptacle, said block having a 2,577,874 7' 8 recess at one end ofits transverse centerline of REFERENCES yCITED fold to receive the slider of the fastener and having a groove formed around the periphery of each end half thereof, the respective ends of l The following references are of record in the le of this patent:

said grooves opening to the surface of the block 5 A UNITED STATES PATENTS on opposite sides of said transverse center line, Number Name Date the upper edges of said groove being spaced from 1,739,762 LEnfant Dea 1'7l 1929 the upper surface of the block, said spacing being 2,203,830 Leue June 11, 1940 less at and adjacent the corners of theV end 2,219,202 Swanson Oct. 22, 1940 halves than at the longitudinal sides of the 10 2,275,690v Sherwood Maz'. 10, 1942 halves.

DOUGLAS J. BROUGHTON.