US416446A

US416446A - Island

Info

Publication number: US416446A
Authority: US
Publication date: 1889-12-03
Anticipated expiration: 1906-12-03

Description

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' T. H. CRAIG.

FEEDING MEGEANISM FOR SEWING MACHINES. No. 416,446. Patented Dec.3.1889.

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T. H. CRAIG. M FEEDING MECHANISM FOR SEWING MACHINES.

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UNITED STATES PATENT OFFICE.

THOMAS H. CRAIG, OF PROVIDENCE, RIIODE ISLAND, ASSIGNOR TO EUGENE F. BOWEN, OF SAME PLACE.

FEEDING MECHANISM FOR SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 416,446, dated December 3, 1889.

Application filed October 15, 1887. Serial No. 252,502. (No model.)

To all whom it may concern/.-

Be it known that I, THOMAS H. CRAIG, a subject of the Queen of Great Britain," and a resident of Providence, in the county of Providence and State of Rhode Island, have invented a new and useful Improvement in Sewing-Machines, of which the following is a specification.

My invention relates to improvements in sewing-machines in which the presser-bar and foot act automatically in conjunction with the needle-bar; and the object of my improvement is to obtain a complete circular line of stitches in a continuous motion. I attain this object by the mechanism illustrated in the accompanying drawings, in which Figures 1 and 2 are views in side elevation with partial section through the center; Figs. 3 and 4, views in side elevation simply; and Fig. 5, a plan section of revolving disk f, showing cone 1) and latch e.

Similar letters refer to similar parts throughout the several views.

The needle-bar a, with its lever is, the presser-bar d, with its lever Z and foot 0, the cylinder whose base is f and handle g, and which moves in the cylinder-head A, and the feedplate B are the component parts of the sewing-machine to which my improvement relates.

In the drawings, A represents the arm of the sewing-machine standard. It is provided with a vertically-arranged cylinder-head A, in which is a cylinder fitted to turn, being held against vertical movement by caps f. The cylinder is also provided with the handles g, by means of which the operator may turn it and change the direction of the feed into a circular or curved path. Centrally in the cylinder slides the needle-bar a, carrying the needle 11, and on one side in the same cylinder slides also the presser-bar d, the upper end of which is slotted and embraces a guiding-pin p, on which the bar may swing slightly toward and from the needle-bar. The presserbar is pressed toward the needlebar by the spring 8, and another spring 25 tends to draw it upward. .A set-screw 2' limits the movement of the presser-bar toward the needle, it being set into the bar and bearing against a stud 011 the lower end of the cylinder. In other respects the foot 0 bears the ordinary relation to the needle a. On the needle-bar is set a cylindrical sleeve 1), tapered 'or beveled at its lower end. A latch e is pivoted on the presser-bar, which latch, when not elevated as hereinafter described, is in range with the sleeve and rests in a horizontal position, but which may be turned upward. The latch is so placed on the bar that its upper edge touches the base of the block at the commencement of forming the stitch. As the needle descends it presses against the latch, as shown in Fig. 2, and thus pushes aside the presser-bar and moves the foot c, which is then down on the cloth or leather, and the cloth or leather is thus moved before the needle enters it. When the sleeve has passed the latch, the latter rises and springs toward the needle-bar, thus lifting the foot and moving it back for a repetition of the feed, this position being shown in Fig. 3. As the needle-bar descends again the presser-foot is again carried down and moved laterally, as above explained. While the needle and presser-foot are thus operating the cylinder may be turned to give any required curved direction to the line of the stitching.

I am aware that a cylinder carrying a needle-bar and presser-bar and turning in the standard is not new.

I claim as my invention In combination, a cylinder arranged to turn in the arm of the standard, the centrally-reciprocating bar, the presser-bar arranged to slide vertically in the cylinder on one side of the needle-bar, the feed-foot carried by the presser-bar, said presser-bar havinga slotted and pivotal connection at its upper end with the cylinder, the springs 25 s, the one tending to draw the presser-bar up and the other tending to press said presser-bar toward the needle-bar, a latch pivoted on the presser-bar, and a sleeve on the needle-bar for engaging the latch, substantially as described.

THOMAS H. CRAIG.

Witnesses:

FREDERIO HAYES, CHRISTOPHER J. MULVANEY.