US2291545A - Foundation member - Google Patents

Description

July 28, 1942.

0. GANZ ET AL FOUNDAT ION MEMBER Filed June 4, 1940 Patented July 1942 UNITED STATES PATENT OFF-ICE 2,291,545 f Daniel Gang and Irving Kaplan, Bronx, N. 1.

Application June, 1940, Serial No. ssacu tion will "become apparent as the specification proceeds. g With the aforesaid objects in view, the invention consists in the novel combinations and arrangements of parts hereinafter described in their preferred embodiments, pointedout in the subjoined claims, and illustratedin the annexed drawingwherein like parts are designated by the a same reference characters throughout the several views. v

Inthe drawing:

' Figure 1 is a fragmentary plan view of a sheet member having plastic elementsbonded thereto according to one embodiment of the invention.

Fig. 2 is an enlarged edge view thereof, with a part'insection to show the plastic bond. Fig. 3 is an enlarged fragmentarysectional view illustrating an apparatus for constructing new articles and showing further details in the bonding of the plastic'element to a perforated or foraminous foundation member.

,Fig. 4 is a similar view of a modified apparatus embodying the invention according to an 'im proved method of operation. j Figs. 5 and 8 are similar views of furthermodifications.

Fig. 7 is an enlarged plan view of alfoundation to Fig. 4.

Fig. 8 is a fragmentary diagrammatic plan'view of a die'member. according to the invention. 7 The advantages of the invention as" here but and instrumentalities are combined'in one and the same structure, but, useful devices may be produced embodying less than the whole.

It will be "obvious to thowskilled in the art to which the invention appertains, that" the same maybe incorporated in several different conmembers.

ZClaims. ((1154-46) cally bonded together. The term foundation member as used herein may include knitted, and woven or textile fabrics of cotton, silk, wool, rayon, metal or composition materials, considered as sheet members. .These materials and the forms thereof referred to may be further described as adapted for direct plastic bonding tothe plastic.

material. Hence the may be porous or penetra ble, or forami'nous in whole or in part. In mold-.-

ing plastics by ection, the extremely high pres sure used may affect the available penetrability of the foundation member. The plastic itself may be of any well known kind, particularly of the type which is generally used in injection molding. The plastic elements ll maybe of any suitable s'iae and shape, and of varied spacing,

arrangement and ,color or according to a re.- quireddesign for ornamentation of the foundation member; but they may also be used for fun'ctionai purposes, to protect or reenforce parts of.

the foundation member.

To clearly illustrate a particular advantage of the invention, the article II will be considered,

for instance, as a fabric to be used in'the making of a ladies' handbag, with the foundation mem-.

ber consisting of any usual textile fabric which in untreated form is necessarily porous or penetrable. Such a fabric may be defined as, a closed I mesh fabric. Ornamentation'of ladieshand bags istaiways a problem and a source of considerable expense. i lor example. consider beaded handbags. with the present invention, an eifect' similar to that of a beaded handbag is available v member and plastic element showing an embodiment of the-invention as constructed according at substantially reduced cost. In so using the article II, the elements It. penetratethe fabricli -and form a projection or anchorage cat the rear face of the fabric, but this projection should I40. g Y tion hereinafter of the method lined are best realized when all ofits features structions. The accompanying drawing, therefore, is submitted merely as showing the preferred exemplification' of the invention.

tion. The same may include a foundation memher I! having plastic elements '|4,directly plastihave as little depth as possibleto keep down the total thickness of the article. The detailed structure will be further understood after the ,descrip-.

plastic elements such aslll.

of molding the} in Fig. 3 is shown a novei'die 2|, illustrating also amethod of the invention. This die 1| as well as they others shown in Figs. 4 to 6. inclusive,

maybe arranged as shown in plan in Fig. 8 for rality of die members 2!, 23, the formerof which may have a die cavity 24, and the latter of which may have a feed passage or gate II. The confronting faces of thedie members are otherwise plane so asto be adapted to uniformly tiaht y tion to the cavities 33 and 2|.

clamp therebetween in plane condition a foundation member or cloth 2! which forms a seal or gasket for the mold. Plastic material is fed through the gate 25 and penetrates and passes through the fabric 26 to all into the cavity 24.

The pressure of the plastic will cause the foundation member, acting as a diaphragm, to tightly stretch and deflect somewhat into the cavity 24 as shown so that molded element 28 will be formed with an anchorage portion 22 at the rear face of the fabric substantially plane with the foundation member. Upon opening the die, the article may be removed and the adherent portion 30 at the gate broken off as at Ila. where the cross hatching of the plastic is over the cross hatching of the fabric, complete penetration of the latter by the plastic is indicated.

For very heavy fabrics, the same may have been initially perforated as at 21, but this is not-desirable, as it increases the cost and requires careful alinement with the die cavities.

In order to mold a large number of the plastic elements such as II or 28, it is desirable that the gates 25 shall horizontally intersect certain portions of the die cavities. If the plastic molded elements be quite small, it would be desirable that the gates extend diametrically of the cavities as suggested in Fig. 8. Hence there is a substantial area of contact between the gate molded portions 30 and the foundation member 26, and if thisplastic penetrated into the foundation member 26, it might result in marring the appearance or causing discoloration of the front face of this member. Hence it is desirable, inthe case of a cloth-like foundation member that it have an opening or openings to permit the use of a minimum pressure on the plastic, which pressure may be insufficient to cause the plastic to penetrate to the extent of passing entirely through the fabric. It will be appreciated that, in aid of this desired result, the fabric at the cavity 24 is unsupported at its faces, thus facilitating the flow of plastic. The dies of Figs. 4 to 6 follow .the principles discussed in, connection with Fig. 3, except as otherwise described. In general,. it will be noted that the plastic at'the cavities In Fig. 4 is shown a die 2| having a die member 22 and a companion die member "which may ,be'like that at 23, except that it may have a cavity 33 of less depth than the cavity 24, and a pin 34 fixed to the die member 32111 central relaextend only partially into the cavity 24 and it may be adapted to pierce the foundation member 35; Preferably the pin may be in the form of a blade or pyramid to afford longitudinal edges for cutting the foundation member to produce an en-' larged opening 36 as indicated in Fig. '7. This opening 36 will not closely hug the pin 34, but

will afford a clearance to permit easy flow of the plastic through the opening 38 to accelerate the speed of molding and to permit the use of a reduced pressure on the plastic such that it shall not penetrate through the foundation member at the gate 31. It will be seen that the article produced by this die may be exactlylike that shown in Figs. 1 and 2, but this method is not as efilcient as that of Figs. 3, and 6.

This pin may In Figs. 5 and 6 are shown the respective dies ll, 39 for molding without causing extended contact with the foundation member of the plastic in the gates. These dies include die members 40 and die members 4|. Co-operating with the latter are intermediate removable die members 42, 43 respectively which are alike, except that the cavity I of the one issmaller than the cavity 45 of the latter. The die members ll have gates 48 that are openable byremoval of the members 42, 0., These gates feed through the orifices 41 in the die members 42, ll When the molding is completed, the die members ll may be removed,then the die members 42, II are removed, and the plastic gate sections in ll, 41 broken and removed to separatethe finished article.

The article molded by the die less apt to have its front face discolored by plastic, than that of the die 39, because the cavity 44 is spaced from the edge of the cavity of the die.

member 40. a

The several dies described are adapted to be arranged in various ways, for example, according to a. system schematically shown in Fig. 8, according to which a plurality of nozzles l8 may feed into a plurality of main gates 49 extending longitudinally of a die plate ill. Interconnecting these main gates are a plurality of secondary cross gates 5| which communicate with die cavities 52. The gates 5| may represent those at 25, 31, and Q6. The diecavities may represent any die cavities herein shown. Thus a large foundation member may be molded with the plastic el'ements in a single operation for the high speed, reliable production of the new articles.

We claim:

1. A device including a textile porous, closed mesh sheet member, a series of sharply defined plastic elements on the front face thereof, a series of anchor elements of plastic material on the rear face thereof, and. shanks of plastic-material uniformly embedded in the sheet member and extending therethrough, saidshanks being integ'ral with said elements and directly interconnecting the elements solely through the sheet member, and relatively straight plastic ribbon-like members'at the rear face of the sheet member directly interconnecting the elements and being bonded to the sheet member, said sheet member having the front face free of plastic except for the elements thereon.

2. A device including a porous, closedmesh, textile sheet member, a series of sharply defined plastic elements on the front face thereof, a series of anchor elements of plastic material on the rear face thereof, and shanks of plastic material uniformly embedded in the sheet member and extending therethrough, said shanks being integral with said elements and directly interconnecting the elements solely through the sheet member, said sheet member being concaved into the front plastic elements and being otherwise plane, and

plastic straight ribbon-like portions directly interconnecting the elements at the rear face of the sheet member and being bonded to the sheet member, the front face of the latter opposite said portions being free of plastic. .1

DANIEL GANZ. mvmo KAPLAN.

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