US1508000A - Hemstitching and picoting attachment for sewing machines - Google Patents

Description

Sept. 9. 192.4. I 1 ,508,000

. C. D. KENNEDY 1 awsn'rcium; AND PICOTING An'Ac'HMaNT FOR sswme MACHINES Filid Jan. 131 1923 WITNESSES c D K INVENTOR @g I elucedy- ATTORNEYS Patented Sept. 9, 1924.

UNITED STATES CHARLES DEAN KENNEDY, OF CORPUS CHRISTI, TEXAS.

HEMSTITCHING AND PICOTING ATTACHMENT FOR SEWING MACHINES.

Application filed January 13, 1923. Serial No. 612,509.

To all whom it may concern:

Be it known that I, CHARLES DEAN KEN- my, a citizen of the United States, and a resident of, Corpus Christi, in the county of Nueces and State of Texas, have invented certain new and useful Improvements in Hemstitching and Picoting Attachments for Sewing Machines, of which the following is a specification.

This invention relates to a hemstitching attachment for sewing machines.

An object of the invention is the provision of a device which may be readily clamped to and rigidly held in place on the presser foot of a sewing machine.

A further object of the invention is the provision of a hemstitching attachment.

- which will insure an accurate and even feed of the work and which is adapted to produce a fine or coarse stitching.

A still further object of the invention is the provision of a hemstitching attachment adapted to be clamped to the presser foot of a machine and so constructed as to prevent the usual needle passage from getting out of alinement, the attachment being provided with a slot having a flared mouth through which the work is readily admitted.

Other objects and advantages will become apparent during the course of the following description.

The invention is illustrated by way of example in the accompanying drawings, in which,

Figure 1 is a view in perspective of the attachment rigidly clamped to the presser foot of a sewing machine.

Figure 2 is an end view of the same.

Figure 3 is a plan view of the attachment.

Referring to the drawings, 1 designates a base plate having a substantially centrally disposed elongated slot 2 extending for a greater portion of the length of the plate. Said plate is provided with a vertical passage 3 shown in dotted lines in Figure 2,

which opens into the elongated slot 2 adjacent one side edge of said slot.

Superimposed upon the base plate 1 are similarly constructed plates 4 and 5 which have alining slots similar to the slot 2 and also alining passages similar to the passage 3 through which the needle 6 is adapted to be operated. A plate 7 is mounted on the uppermost plate 5. The plate 7 terminates at its inner end at theone edge of the slot 2 and as shown in Figure 3 and falls short longitudinally of the-plate 5. The plates nuts 13 are screwed down into engagement I with the bar 10.

As shown in the drawings the hemstitching or picoting attachment is adapted to be clamped directly to the presser foot of an ordinary sewing machine.

One corner of a portion of the plates at the entrance of the slot 2 is sheared away as shown at 14 to form a flaring mouth as an entrance for the ready insertion of the piece of cloth 15. This clothvis carried over v one portion of the hem-stitching device formed by portions of a plurality of the plates and designated by the numeral 16, through the slot 2 and beneath the bottom of that portion of the base ,plate designated at 17. A second strip ofvclotlr18 is carried transversely and under the base plate las shown in Figure 2.' p

The operation of my device, is as follows:

In attaching'the hemst-itching and picoting device, loosen both thumb'nuts 13 and raise the narrow bar 10 sufficiently in order to slip the presser foot 11 between .said bar and plate 7 while the needle ofthe sewing machine is raised. Lower the needle through the small needle slot 3; then lower the presser foot slowly, placing thevattachment straight across the foot far enough back towards the shank 12 so that the needle will run freely in front of the top clamping bar 10 and close to the front wall of the needle slot 8. Screw up both thumb nuts tight in order to firmly clamp the attachment to the presser foot. The top tension of the ordinary sewing machine should be loosened when the attachment is applied since this determines the right width of the hemstitching. One ply of clothis placed beneath the attachment and another above the plate 16 through the transverse slot 2 and then beneath the portion 17 of the lower plate 1 and in face to face engagement With the cloth lVhen the machine is operated the two pieces of cloth Will be stitched together. No pucl-zer will be had in the cloth by my attachment unless the sewing machine itself is not in proper Working order. After stitching, the two pieces of cloth are pulled apart evenly and the edges of the cloth are stitched back. This last form of stitching may be done more readily with the attachment off.

In employing the device for picoting the machine is operated in the same manner with the attachment similarly placed. Nevertheless any kind of goods may be employed for the bottom layer 18, When the Work along the edge of the cloth is finished the bottom thread is drawn out when the piece of cloth 18 Will come off leaving the loop of picoting.

The bottom of the plate 1 presents a flat even surface throughout so that the same Will rest equally upon all the feeder teeth of the machine thereby insuring an accurate and steady feed, thus preventing puckering of the Work.

The flared open mouth admits the Work more readily.

The clamping bar 10 looks the hemstitching device in such a rigid manner to the presser foot that the device Will not readily become detached from the presser foot. Since the members 16 and 17 of the hemstitching device are formed of single sheets of metal and locked together by the studs 8 and 9 there Will be no danger of the vertical passages 3 falling out of alinement With the needle 6 as is usually the case Where the base plate is made of separate pieces. I preferably manufacture the attachment in cold rolled steel but the same may be made of any other suitable material.

What I claim is:

1. A hemstitching device adapted to be attached to the presse-r foot of a sewing machine comprising a fiat plate having a slot extending for a portion of the length of the plate and transversely of the Work feeding means of the machine, one edge of the mouth of the slot being flared for admitting the Work, said plate being provided With a vertical needle passage opening into the central portion of the slot from one edge of the slot, plates of varying thicknesses similar in construction to the base plate adapted to be superimposed upon said plate, threaded studs rigidly secured to the base plate in spaced relation and located upon one side of the slot, alining spaced perforations in the superimposed plates adapted to receive the spaced threaded lug, a clamping bar provided with spaced perforations adapted to receive the threaded studs, and nuts on the threaded studs for forcing the clamping plate in rigid relation with the presser foot of a machine.

2. A hemstitching device adapted to be attached to the presser foot of a sewing ma chine comprising a flat base plate having a slot extending for aportion of the length of the plate and transversely of the Work feeding means of the machine, said plate being provided With a vertical passage opening into the central portion of the slot, a clan'iping bar for locking the presser foot to v the base plate and provided With spaced perforations, spaced threaded studs rigidly mounted on the base plate adapted to be received by the perforations in the-clamping bar, and nuts on the threaded studs for forcing the clamping bar in rigid relation With the presser foot.

3. A hemstitching device adapted to be attached to the presser foot of a sewing machine comprising a flat plate having a centrally disposed slot extending for a portion of the length of the plate, the mouth of the slot being flared for more readily admitting the Work, said plate being provided with a vertical needle passage opening into the slot, a clamping means extending longitudinally of the base plate for locking the base plate to the presser foot of the machine, and means removably mounted between the base plate and the clamping means for producing hemstitching of various Widths.

cHAnLEs DEAN Kenn-Fer.

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