US2353858A - Slide fastener - Google Patents

Description

v`Iuly 18, 1944. J. T. TEDESCO 2,353,858

SLIDE FASTENER Filed Feb. 16, 1943 2 Sheets-Sheet l f "I l /2 .IN VEN TOR.

`July 18 1944- J. T TEDESCO 2,353,853

SLIDE FASTENER Filed Feb. 16, 1943 2 Sheets-Sheet 2V WMM/4k TTo RNEX Patented July 18,1944

UNITED STATES PATENT OFFICE SLIDE FASTENER John T. Tedesco, Bronx, N. Y.

Application February 16, 1943, Serial No. 476,066

' 13 claims. (c1. 24A-20s) This invention relates to new and useful improvements in slide fasteners.

More particularly, the invention proposes a slide fastener which is characterized by a pair of interlocking strips of resilient material, each strip of which is provided with a solid cylindrical front edge portion and a tubular portion located rearwards of said front edge portion and complementary to said cylindrical portion, and said tubular portions being provided with side slit-like openings into which said cylindrical portions engage said tubular portions for accomplishing the interlocking of said strips. It is contemplated to reinforce said resilient material strips with internal strips of metal if necessary. Furthermore, it is contemplated to provide the resilient material strips with end stops for limiting sliding of a slider for opening and closing the fastener.

An important object of this invention resides in the production of a slide fastener which is exceptionally simple for fastening and unfastening garments, containers. and other articles.

Another important object gained by the newconstruction is the production of a fastener which is flexible and which does not contain any exposed metal other than the slider for accomplishing the interlocking of the parts. By the elimination of all unnecessary metal the possibility of injury to ones skin has also been eliminated.

Another important object of the new construction resides in the arrangement which makes the slide fastener dustproof, water proof and rust proof.

Another feature of the invention resides in the fact that garments, containers and other articles provided with the fastener may be cleaned by the normal Lcleaning processes, including dry cleaning, etc., without injury to the fastener.

Still further the invention proposes constructing the interlocking strips of the fastener with flat rear edges forming webs by which these strips may be attached to the edges of openings to be closed by the slide fastener.

Still another important feature of the new slide fastener resides in the fact that the pair of interlocking strips of the fastener are of identical shape so that they may be cut from a long strip of material and merely turned around to oppose each other for interlocking.

Still further the invention contemplates the construction of a simple slide for interlocking and disengaging the strips of the slide fastener.

It is an object of this invention to characterize the new slide for the fastener by the fact that it includes a face wall in intimate contact with 55 and extending across the adjacent sideedge portions of the interlocking strips, and being connected-with an S-shape wall extending from the back face thereof and encasing a small section of said inter-engaged cylindrical and tubular portions for forcing the strips into interlocking positions, when the slide is moved in one direction.

Still further it is proposed to provide the slide with longitudinally extending laterally curved fingers projecting from the end portions of one of the edges of said S-shaped wall and engaging the front edge portions of said straight cylindrical edge portions, holding same disengaged from their complementary tubular portions to open the interlocking strips when the slide is moved in the other direction.

Still further it is proposed to construct the curved fingers to be concave in transverse cross `section so as to better engage the front edge The invention also contemplates that the resilient material of the interlocking strips be tough and smooth so that the slide may be easily moved in one direction` or the other for operating the fastener.

Still further the invention proposes a slide fastener in which the interlocking strips of resilient material may be constructed of rubber or synthetic rubber. It is contemplated that with resilient material garments and containers, the said interlocking strips may be integral with edge portions thereof. In so far as the slide is concerned it is proposed to so construct the slide that it may be made from metal or composition material.

For further comprehension of the invention. and of the objects and advantages thereof, reference will be had to the following description and accompanying drawings, and to the appendedA claims in which the various novel features of the invention are more particularly set forth.

In the accompanying drawings forming a material part of this disclosure:

Fig. 1 is a fragmentary elevational view of a slide fastener constructed inaccordance with this e invention.

Fig. 2 is a fragmentary enlarged detailed view of the upperportion of Fig. 1, but illustrated with the slide moved down a short distance and with the free ends of the strips bent forwards so that their cross sectional shapes may be readily seen.

Fig. 3 is an enlarged horizontal sectional view taken on the line 3-3 of Fig. 1.

Fig. 4 is a fragmentary enlarged horizontal sectional view taken on the line 4-4 of Fig, 1. Fig. 4A is a perspective view of the slide, per se. Fig. 5 is a transverse sectional view similar to Fig. 4 but illustrating a modified construction of the invention.

Fig. 6 is a fragmentary elevational view of a slide fastener constructed in accordance with another form of this invention.

Fig. 7 is a fragmentary horizontal sectional view taken on the line 'I--1 of Fig. 6.

Fig. 8 is a fragmentary horizontal sectional view taken on the line 8-8 of Fig. 6.

Fig. 9 is an enlarged fragmentary horizontal sectional view similar to Fig. 8 'but disclosing still another modified form.

The slide fastener, in accordance with this invention, includes a pair of interlocking strips I of resilient material. Each of these strips has a solid cylindrical front edge portion II and a tubular portion I 2 located rearwards of said front edgeportion and complementary to said cylindrical portion II. Said tubular portions I2 have side slit-like openings I3 through which said cylliidrical portions Il engage said tubular portions The strips I0 have fiat rear edges I4 forming webs by which the strips may be attached to the edges of an opening to be closed by the slide fastener. Preferably, the strips I0 are formed from rubber, synthetic rubber, or other similar materials. Preferably, cloth strips I are extended along and attached to the flat rear edges I4 to facilitate the attachment of the strips to the edge portions of the openings of a garment, container or other article to be closed by the slide fastener. These cloth strips I5 may be cemented, calendered, or even stitched to the webs I4. These cloth strips I5 may be water-proofed. Of course. if desired, the strips I0 may be directly attached by their webs I4 to the edges of an opening to be closed by the slide fastener, eliminating the necessity of the cloth strips I5.

vIt should be noted that the pair of strips I0 are of identical cross sectional shapes and dimensions. For this reason they may be cut from a continuous piece of -strip material. Thus, the strips forming the slide fastener may be manufactured in long lengths of materialwhich may be cut into small sections, as needed. It is merely necessary to turn cut sections so that they oppose each other for producing the interlocking strips of the slide fastener.

A slide I6 is used in conjunction with the interlocking strips. The slide I6 includes a face wall I1 in intimate contact with and extended across adjacent side edge portions of said inter- 'locking strips I0. An S-shaped wall I8 extends from the back of said face wall I'I and encases a small section of the said inter-engaged cylindrical portions II in said tubular portions I5. Longitudinally extending laterally curved fingers I9 project from the end portions of one of the edges of said S-shaped wall I8 and engage the front edge portions of said solid cylindrical edge portions II holding these edge portions disengaged from their complementary tubular portions I2. A handle 20 is mounted on the face wall I1 by which the slide may be conveniently moved up and down.

In Fig. 1 the slide fastener is shown in its closed position. It may be opened by merely gripping the handle 20 and moving the slide I6 downwards. As the slide I6 is moved downwardly the longitudinally extending laterally curved lingers I9 'l5 will force the solid cylindrical'edge portions II out from their complementary tubular portions I2, thus opening the fastener. It should be noted that the lingers I9 are concave in transverse crosssection so as to conform with the front edge portions of the solid cylindrical edge portions I I.

When the slide I6 is moved back to its raised position, the S-shaped Wall I8 will force the solid cylindrical edge portions I I back into engagement with their complementary tubular portions I2 and thus the slide fastener i's again closed. The resilient material of the interlocking strips I0 must be tough so that the interlocking strips will be tightly engaged with each other.. This construction makes the slide fastener water-proof and dust proof. This construction also makes it possibi for the fastener to remain closed under all possibi* loads generally placed upon slide fasteners oi this nature.

In Fig. 5 a modified form of the invention has been disclosed which distinguishes from the prior form in the fact that the web portions I4' are ollset laterally of each other. In other respects this form of the invention is identical to the previous form and like parts are identified by like reference numerals.

The purpose of offsetting the web portions I4' is to divide up the stresses which tend to open the fastener when it is closed and in use. Because of the offset arrangement there is a tendency for only component parts of the forces tending to pull open the fastener to be transferred to portions of the fastener which must flex or give when the fastener opens. Consequently, the'design shown in Fig-5 is capable of remaining closed under slightly greater loads than the design dis;- closed in the prior form of this invention. However, the prior form of the invention has the advantage of symmetry with the webs I4 in a common plane.

In the modified form of the invention disclosed in Figs. 6 to 8, another slide fastener is shown which includes a pair of` interlocking strips I0 of resilient material. Each of these strips has a solid cylindrical front edge portion II and a tubular portion I2 located rearwards of said solid cylindrical front edge portion II and complementary to said cylindrical portion II. Said tubular portions l2 have side slit-like openings' I3 through which said cylindrical portions II engage the tubular portions I2.

The strips I0 have flat rear edges forming webs I4 by which they may be attached to the edges of an opening to be closed by the slide fastener. It should be noted that the strips are of identical cross sectional shapes and dimensions. A slide I6' is used in conjunction with said interlocking strips I0. This slide includes a front face wall 22 in intimate contact with and extended across the front faces of the adjacent side edge portions of said interlocking strips I0, and a back face wall 23 in intimate contact with and extended across the back faces of the adjacent side edge portions of said interlocking strips I0. An -Sshaped wall 24 extends between the adjacent faces of said walls 22 and 23 and encases a. small section of said interengaged cylindrical portions II in said tubular portions I2. A handle 25 is mounted upon the front face wall 22 by which the slide I6' may be moved upwards and downwards.

The slide I6' is also provided with longitudinally extending flngers 26 which project from the end portions of the top edges of said S-shaped wall 24. These fingers 26 engage the adjacent edge portions of the strips Il for holding a small section thereof disengaged. The nngers 26 nll up the compass of the small section of the tubular portions i2 and engage the front edge portions of the solid cylindrical edge portions Il, as clearly shown in Figs. 6 and '7. 'I'he arrangement is such that when the slide I6' is moved downwards the interlocking strips III will be opened. When it is moved upwards the strips I will be relocked.

In Fig. 9 another modified form of the invention is disclosed which is similar to the form mentary straight faces formed upon the edge portions of the strips I0'. 'I'he walls 22' and 2l' have their ends bent towards each other to form small flanges 28 which engage the edges of the flat faces of the strips I I'.-

In other respects this form of the invention is similar to the previous forms and like parts are indicated by like reference numerals.

While I have illustrated and described the preferred embodiments of my invention, it is to be understood that I do not limit myself to the precise constructions herein disclosed and the right is reserved to all changes and modifications coming within the scope of the invention as deiined in the appended claims.

Having thus described my invention, what I claim as new and desire to secure by United States Letters Patent is:

l. In a slide fastener. a pair of interlockingr strips of resilient material, each strip having a solid cylindrical front edge portion and a tubular portion located rearwards of said front edge portion and complementary to said cylindrical portion, and said tubular portions having side slit-like openings through which said cylindrical portions engage said tubular portions.

2. In a slide fastener. a pair of interlocking strips of resilient material, each strip having a solid cylindrical front edge portion and a tubular portion located rearwards of said front edge portion and complementary to said cylindrical portion, and said tubular portions have side slitlike openings through which said cylindrical portions engage said tubular portions, said interlocking strips being of identical cross sectional shapes and sizes so that they may be cut from a continuous strip.

3. In a slide fastener. a pair of interlocking strips of resilient material, each strip having a solid cylindrical front edge portion and a tubular portion located rearwards of said front edge 'portion and complementary to said cylindrical portion, and said tubular portions having side slit-like openings through winch said cylindrical portions engage said tubular portions, and said strips having flat rear edges forming webs by which the strips may be attached to the edges of openings to be closed by said slide fastener.

4. In a slide fastener, a pair of interlocking strips of resilient material, each strip having a solid cylindrical front edge portion and a tubular portion located rearwards of said front edge portion and complementary to said cylindrical portion, and said tubular portions having side slit-like openings through which said cylindrical portions engage said tubular portions, said strips having flat rear edges forming webs by which ings to be closed by said slide fastener, and cloth strips attached along said webs.

5. In a slide fastener, a pair of interlocking strips of resilient material, each strip having a solid cylindrical front edge portion and a tubular portion located rearwards of said front edge portion and complementary to said cylindrical portion, and said tubular portions having side slit-like openings through which said cylindrical portions engage said tubular portions, said resilient material being waterproof and dust proof.

6. In a slide fastener, a pair of interlocking strips of resilient material, each strip having a solid cylindrical front edge portion and a tubular portion located rearwards of said front edge portion and complementary to said cylindrical portion, and said tubular portions having side slit-like openings through which said cylindrical portions engage said tubular portions, and a slide comprising a face wall in intimate contact with and extending across adjacent side edge portions of said interlocking strips, an S-shaped wall extending from the back of said face wall and encasing a small section of said inter-engaged cylindrical and tubular portions, and longitudinally extending laterally curved fingers projecting from the end portions of one of the edges of said S-shaped wall and engaging the front edge portions of said solid cylindrical edge portions holding same disengaged from their complementary tubular portions.

7. In a slide fastener, a pair of interlocking strips of resilient material, each strip having a solid cylindrical iront edge portion and a tubular portion located rearwards of said front edge portion and complementary to said cylindrical portion, and said tubular portions having side slit-like openings through which said cylindrical portions engage said tubular portions, and a slide comprising a face wall in intimate contact with and extending across adjacent side edge portions of said interlocking strips, an S-shaped Wall extending from the back of said face wall and encasing a small section of said interengaged cylindrical and tubular portions, and longitudinally extending laterally curved fingers projecting from the end portions of one of the edges of said S-shaped wall and engaging the front edge portions of said solid cylindrical edge portions holding same disengaged from their complementary tubular portions, said fingers being concave in transverse cross section to conform with said front edge portions.

8. In a slide fastener, a pair of interlocking strips of resilient material, each strip having a solid cylindrical front edge portion and a tubular portion located rearwards of said front edge portion and complementary to said cylindrical portion, and said tubular portions having side slitlike openings through which said cylindrical portions engage said tubular portions, and a slide comprising a face Wall in intimate contact with and extending across adjacent side edge portions of said interlocking strips, an S-shaped wall extending from the back of said face wall and encasing a small section of said interengaged cylindrical and tubular portions, and longitudinally extending laterally curved fingers projecting from the end portions of one of the edges of said S- shaped wall and engaging the front edge portions of said solid cylindrical edge portions holding same disengaged from their complementary tubular portions, and a handle on said face wall by thestrips may be attached to the edges of open- 76 which the slide may be moved.

9. In a slide fastener, a pair of interlocking strips of resilient material, each strip having a solid cylindrical front edge portion and a tubular portion located rearwards of said front edge portion and complementary to said cylindrical portion, and said tubular portions having side slitlike openings through which said cylindrical portions engage said tubular portions, said strips having flat rear edges forming webs by which the strips may be attached to the edges of openings to be closed by said slide fastener, said webs being in a common plane.

10. In a slide fastener, a pair of interlocking strips of resilient material, each strip having a solid cylindrical front edge portion and a tubular portion located rearwards of said front edge portion and complementary to said cylindrical portion, and said tubular portions having side slit-like openings through which said cylindrical portions engage said tubular portions, and said strips having flat rear edges forming Webs bY which the strips maybe attached to the edges of openings to be closed by said slide fastener, said webs being in slightly oiset parallel planes.

11. In a slide fastener, a pair of interlocking strips of resilient material, each strip having a solid cylindrical front edge portion and a tubular portion located rearwards of said front edge portion and complementary to said cylindrical portion, and said tubular portions having side slitlike openings through which said cylindrical portions engage said tubular portions, and a slide comprising front and back face walls in intimate contact with and extending across adjacent side edge portions of the front and back faces of said interlocking strips, an S-shaped wall extending between said face walls and encasing a small section of said interengaged cylindrical and tubular portions, and longitudinally extending fingers projecting from one of the edges of said S-shaped wall and engaging in said tubular portions and against the front edge portions of said solid cylindrical edge portions holding a small section of said interlocking strips disengaged from their complementary tubular portions.

12. In a slide fastener, a pair of interlocking strips of resilient material, each strip having a interlocking strips, an S-shaped wall extendingbetween said face walls and encasing a small section of said interengaged cylindrical and tubular portions, and longitudinally extending fingers projecting from one of the edges of said S -shaped wall and engaging in said tubular portions and against the front edge portions of said solid cylindrical edge portions holding a small section of said interlocking strips disengaged from their complementary tubular portions, said front and back face walls being at and straight.

13. In a slide fastener, a pair of interlocking strips of resilient material, each strip having a solid cylindrical front edge portion and a tubular portion located rearwards of said front edge portion and complementary to said cylindrical portion, and said tubular portions having side slitlike openings through which said cylindrical portions engage said tubular portions, and a slide comprising front and back face walls in intimate contact with and extending across adjacent side edge portions of the front and back faces of said interlocking strips, an S-shaped wall extending between said face walls and encasing a small section of said interengaged cylindrical and tubular portions, and longitudinally extending fingers projecting from one of the edges of said S-shaped wall and engaging in said tubular portions and against the front edge portions of said solid cylindrical edge portions holding a small section of said interlocking strips disengaged from their complementary tubular portions. said front and back face walls being at and straight, and having inturned edge portions engaging complementary edges on the face of said interlocking strips.

JOHN T. TEDESCO.I

Images