USRE4500E - Improvement in pressersand stitch-dividers for sewing-machines - Google Patents

Description

Woodward. 50mi/zg Maa/mee 'UNITED TES PATENT OFFICE;

ALFRED S. VVOODWARD, OF BROOKLYN', NEW YORK.

Specification formingpart of Letters Patent No. 110,945, dated January 10, 1871 reissue No. 4,500, dated August 1, 1871.

To all whom 'it may concern:

Be it known that I, ALFRED S. WOODWARD, of Brooklyn, in the county of Kings and State of New York, have invented a new and useful Improi-*einent in Sewing-lilachines and I do hereby declare that the following is a full, clear, and eX- act description thereof, which will enable others skilledin the art to make and use the saule, reference being' had to the accompanying drawing forming part of this speciiication.

My invention has for its object to combine a stitch-dividing instrument with a sewin g-machine in suchinanner that the operation known to the trade as dividing the stitches, hitherto`eXclu--..

sively done by hand, may be automatically done by the machine simultaneously with the stitching. The said stitch-dividing consists in raising the thread between the holes made by the needles, and imparting a rounded and even appearance to it by orcing'a blunt awl into the holes behind the stitches after the stitching-has. been done. The invention consists in the employment of a blunt stitch-divider, in combination with the sewing mechanism, and so operated as to be thrustdown between the stitches after they pass view. Fig. 5 is an under-side view. Fig. 6 is a' rear view. Fig. 7 represents the stitches as they appear when they come from the needle, and Fig. represents the stitches after being divided.

A indicates the presser-shaft of the sewingmachine, to be operated in the usual way, said shaft being shown in dotted lines. B is the hub by which the presser is connected to the shaft A. c is the vertical part of the presser; D, the heel; E, the foot; and F, a set-screw-by which the hub is niade fast to the shaft. H is the shank of a stitch-divider; and L, the point of a small bent rod or bar of steel, having the shank adapted to be attached to the vertical part c of the presser on the side fronting the needle, while the point which is projected toward the needle by the horizontal part a extends down below the bottoml of the presser-foot, which is so narrowed imme- 'diately behind the dividing-awl as to admit the point to be arranged in the line of the seam. The shank is secured to the part c by the screws I,

and is made adjustable vertically by the holes.

for the screwsbeing elongated vertically, so that the point may project more or less for entering between the stitches, much or little, as may be required by the nature ofthe work in hand. The `part of the presser behind the stitch-divider has a groove, G, in it to allow the raised stitches to escape without being iiattened down again, the foot acting on the leather each side of the stitches.

`The stitch-divider rises with the presser when attached to it to clear the leather for allowing it to feed along, and drops into thenotch -between the threads'of two stitches when the presser falls, and swells out the thread between the holes, imparting the rounded and even inisli thereto'indicated in Fig; 8. i

It should be stated that in some ofthe machines in which this stitch-divider will be used the projection of it below the presser will not interfere with the feed, which is eiected by a needle which enters the leather from below in a hole formed by an awl working from above and carries the leather along after the awl and the presserhave i lifted. But I do not limit myself to the employment ofthe stitch-divider with machines having this kind of feed.

Having thus described my invention, I claim as new and desire to secure by Letters Patentl. The combination, witha sewing-machine, of a stitch-divider, adapted to be automatically forced into the notches between the stitches, as the -work passes from the needle, for dividing saidstitches, substantially in the manner specified.

2. The stitch-divider combined with the presser, andthe latter provided with the groove G in the heel, substantially as specified.-

lALFRED S. FOO-INVARI).

AllVitnesses T. B. Mosman, Gmo. W. Manna.

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