US1958873A - Article attaching - Google Patents

Description

y 1934. J. VOLLMAN 1,958,873

ARTI CLE ATTACHING Original Filed Sept. 30, 1931 3mm Jose viz Val/m an wifweom Patented May 15, 1934 UNITED STATES ARTICLE ATTACHING Joseph Vollman, Elizabeth, N. J., assignor to The Singer Manufacturin 3' Company, Elizabeth,

N. J., a corporation of New Jersey Original application September 30, 1931, Serial No. 565,938. Divided and this application June 18, 1932, Serial No. 619,563

Claims.

This invention consists in an improved method and means for attaching articles to cord or cordlike materials which are narrow in proportion to their length.

5 The preferred embodiment of the invention will be understood by reference to the accompanying drawing, in which:

Fig. 1 is a top plan view representing a portion of an elastic cord and a hook applied thereto, and illustrating how the groups of attaching threads are laid.

Fig. 2 is a section taken substantially along the line 2--2 of Fig. 1.

Fig. 3 is a side elevation representing a portion of an elastic cord and a hook applied thereto.

Fig. 4 is a section taken along the line 4-4 of Fig. 3.

For the purpose of illustration, I have selected an elastic cord comprising a series of parallel rubber strands 11 encased in a fabric covering 12 similar to those used as shock absorbers in parachute construction. Heretofore, hooks or articles having sewing eyes have been secured to those cords by hand and with one continuous wrapping of thread which passes through the eyes of the hook and around the cord. When so secured the strength of the connection between the cord and hook depends entirely on the friction between the cord and the thread; the amount of friction in turn being dependent upon how tight the thread is wound around the cord. In addition to a Wrapping such as previously employed, I have provided groups of anchoring stitches which pass through the eyes of the hook and through the cord, thereby providing a positive connection between the hook and cord.

The hook 14 having a shank 13 provided with eyes 15 and 15 may be expeditiously sewed on by an article attaching machine such as disclosed in my co-pending application Serial No. 565,938, filed Sept. 30, 1931, of which this application is a division.

In the present embodiment the tacks are preferably laid in the following sequence. The first reciprocation of the needle pierces the cord 10 at A, the Work and needle are then shifted relative to each other to a position so that the needle on a second reciprocation will descend through the eye 15 of the hook and alongside the cord 10 50 at the point B. The work and needle are then vibrated relative to each other so that the needle alternately descends through the points B and C. As shown in the present embodiment, after a group of six wrapping stitches a has been laid '55, across the shank 13 of the hook 14 and between the eyes of the hook and around the cord, the work is moved between the points A, B and C, so that the needle pierces the cord at the apex of the triangle or point A during every other reciprocation, i. e., the needle descends at B, A, C, A, B, A, C, A, etc., until six stitches have been laid in each of the anchor groups of stitches b and c. Preferably the last two stitches pierce the cord at A and make the usual tying stitches.

It will be observed that the groups of wrap ping stitches a which form the base of the triangle serve; first, to wrap the end of the cord to prevent unraveling; second, to hold the shank of the hook against the cord; third, to reenforce the cord between its end and the anchor point A; and fourth, to secure the hook to the cord in conjunction with the anchor groups of stitches. This method has many advantages over the old and laborious hand method of wrapping the hook to the cord. Further, a positive connection between 76- the hook and cord is provided, thus giving greater security which is a highly desirable result.

It will also be observed that the stitches are of the lock-stitch type and are formed from an upper thread d and a lower thread d. The so use of this type of stitch prevents unraveling of the threads should any one tack or stitch of a group of stitches fail.

It will be apparent that any number of stitches may constitute a group and that the arranges5 ment of the stitches is susceptible of material variations. The privilege is therefore reserved of resorting to all such legitimate changes therein as may be fairly embodied within the spirit and scope of the appended claims.

Having thus set forth the nature of the invention, what I claim herein is:

1. In combination, a cord, a member formed with a shank having a plurality of sewing eyes at one end thereof and groups of stitches connecting said member to said cord, said stitches successively passing through one of said eyes, through the cord externally of said eyes and thence through another of said eyes.

2. In combination, a cord, a member formed with a shank having a plurality of sewing eyes at one end thereof and groups of stitches for securing said member to said cord, said groups of stitches being laid in the form of a triangle of which the base extends across the space between the eyes and the apex is disposed in the cord externally of the eyes.

3. In combination an elastic cord, a fastening member formed with a shank having a plurality of sewing eyes at one end thereof, a group of series of elastic strands and a member'formed with a shank having a plurality of sewing eyes. at one end thereof, and Wrapping stitches em' bracing said cord for connecting said; member,

to said cord, said wrappingstitches being formed from a plurality of interlocking threads.

5. In combination, with an elastic cord formed from a plurality of strands of elastic material, a hook formed with a hook bill and a shank having sewing eyes at one end thereof, a group of wrapping stitchesformed fromia plurality of interlocking threads whichpass through said eyesand embrace said cord, and groups of anchoring stitches also formed from a plurality of interlocking threads which pass successively through said cord externally of said eyes and through one OfJSaiCIZBYBS and externally of said cord.

JOSEPH VOLLMAN.

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