US778367A - Hemstitch attachment for sewing-machines. - Google Patents

Description

PATENTED DEC. 27; 1904.

APPLIGATION FILED APR. 29. 1904.

WITNES ES.- I INVENTOR L j E 7 v I BY Dada/a ATTORNEY UNITED STATES Patented December 27, 1904:.

PATENT OFFICE.

ALEXANDER LAUBSCHER, OF BRIDGEPORT, CONNECTICUT, ,ASSIGN OR TO WHEELER & WILSON MANUFACTURING COMPANY, OF BRIDGEPORT, CONNECTICUT, A CORPORATION OF CONNECTICUT.

HEIMSTITCH ATTACHMENT FOR SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 778,367, dated December 27, 1904.

' Application 519d April 29,1904. Serial No. 205,545.

To all whom, it vnay concern:

Be it known that I, ALEXANDER LAUBSOHER, a citizen of the United States, residing at Bridgeport,in the county of Fairfield and State of Connecticut, have invented a certain new and useful Improvement in Hemstitch Attachments forSewing-Machines, of which the following is a full, clear, and exact description. The object of this invention is to provide a IO simple and efficient attachment for domestic sewing-machines for hemstitch or open-seam work. I i

The invention comprises a presser-foot for separating the plies of material to be hemstitched provided with means for varying the width of the hemstitch or open-work seam, as will now be described and finally'claimed.

In the accompanying drawings, illustrating the invention, in the several figures of which like parts are similarly designated,-Figure 1 I is a perspective View showing the attachment in position on parts of a sewing-machine. Fig. 2 is a perspective view of the presser-foot with the material in dotted lines, illustrating I how the material is passed over and under the presser-foot in operation. Fig. 3 is asection taken on the line of the needle-hole, Fig. 2, with the material in place. Fig. 4 is a plan view illustrating the completed seam.

In the drawings only so much of the sewing-machine is shown as is necessary for a proper understanding of the invention.

1 is a portion of the overhanging arm, 2 the needle-bar, 3 the needle, 4 the presserplate, all of which may be as illustrated or of any approved construction.

7 is the presser-foot, to which is attached a plate 8, provided with a slit 9 for the passage of the material, and at right angles to the slit 9 is a slit 10, extending from the needle-hole 11 into the longer slit v At 12 the plate 8 is soldered to the presserfoot 7 but it will be understood that the parts 7 and 8 might be constructed as a single piece or made in separate pieces secured together in any suitable manner. I

i The plate 8 at its free end is folded under,

bar, 5 the throatplate, and'6 the front slide.

as at 13, to provide adjustment for varying the width of the hemstitch or open-work seam. The plate 8 .is preferably made of sheet metal, so as to make it convenient to vary the vertical heightbetween the upper and lower members, dependent upon the width of the seam required' By a comparison of Figs. 1 and 2 it will be seen thatin Fig. l the U-shaped space is narrower than that shown in Fig. 2, and such relative adjustment ofthe members of plate 8 is effected by deflecting the portion 13 from the upper portion of plate 8 by the employment of any suitable instrument, as a screwdriverfor opening and pliersfor closing such portion. V

The attachment is adjustably secured to the presserbar 4 by the thumb-screw 14. the threaded portion of which passes through a suitable hole in the slotted portion 15 of the presserbar and is threaded into the opposite portion 16. The upright portion of the presserfoot is provided with a notch 17 and a recessed portion 18, the notch 17 being in width somewhat greater than the body of the screw 14 and the latter somewhat longer than the diameter of the presserbar 4, so that the lateral adjustment of the attachment may be effected and the needle-hole 11 may be adjusted to the vertical action of the needle 8.

From the foregoing it will beunderstood that the construction of the hemstitch attachment permits the lower ply 19 of the material to be placed between the attachment and the throat-plate, so that 'the hemstitch or openwork seam may be located at any desired dis tancefrom the edge of the material, the distance of the seam from the edge of the upper ply 20 (see Fig. 2) being governed by the length of the slit 9 and the extent of the openwork of the seam being governed by the height of the U-shaped portion, or, in other words, the distance which the folded member 13 is apart from the upper member. V

The operation of the device is as follows: The under ply 19 is placed under the presserfoot between. the attachment and the throatplate, as is common in hemstitch attachments generally; The upper ply 20 is placed over the U-shaped portion of the plate 8 through the slit 9 and under the portion 21 of the presser-foot 7, and as the material is fed forward by the usual feed-dog (not shown) the stitch is formed through the plies of a length equal to the height of the U-shaped portion, thus elfeeting the stitch 22. After the completion of the hemstitch or open-work the edges 23 are turned back and stitched down in the ordinary manner by the seams 24.

What I claim is- 1. A hemstitch attachment for sewing-machines, comprising a presser-foot, a plate attached thereto and having a longitudinal slit, said plate fixed to the presser-foot atone side of the slit and free at its other side and having said free side folded under in U shape in cross-section and provided with a needle-hole and a slit connecting the needle-hole and longitudinal slit.

2. A hemstiteh or open-work attaclnnent for sewing-machines, comprising a presserfeet, a plate attached to the outer end thereof, extending longitiulinally at right angles thereto,having a lengthwise slit therein which separates a free end or side from that portion attached to the presser-loot, and provided with an underturned fold on said free end capable of being moved toward and from the upper portion to vary the distance between the fold and upper portion and thereby ell'ovt hemstitch or open-work seams of dillerent widths, and said fold having a needle-hole connected by a slit with the lengthwise slit.

In testimony whereof I have hereunto set my hand this 27th day of April, A. 1). I904;

ALEXANDER LAUBS( ll llClt. WVitnesses:

F. \V. Os'rnon, Amnn M. DONIHEE.

Images