US97544A - Improvement in tuck-creaser for sewing-machine - Google Patents

Description

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JOHN n. MooNnY, or SAN FRANCISCO, CALIFORNIA.

Letters Patent IVe-97,544, dated December 7, 1869.

IMPROVEMENT IN TUCK-CREASER FOR SEWING-MACHINE.

l The Schedule referred to in these Letters Patent and making part of the same in Tuck-Markers; and I do hereby declare the following description and accompanying drawings are Sulliciont to enable any person skilled in the art or science to which it most nearly appertains, to make and use rnysaid invention or improvements wit-hout further invent-ion or etperment. 4

The nature of my invention consists of a device for simply marking o1' creasing the tuck, so arranged that it will bc noiselcss, and easily adjusted. The tension or force of the tuck-bar may be regulated for thick or thin fabrics, without accelerating or -retarding the travel of the cloth beyond the ordinary speed imparted by thc'presscr-bot ot' vthe sewing-machine. A second tuck may be creased while the previous one is being stitched.

Referring to the accompanying drawings- Figure l represents a side elevation, showing the position of the striking-arm under the needle-arm of a sewingfmachine. I

Figure 2 is a plan of tuck-marker.

They plate A, which carries the mechanism, rests upon the needle-plate ofthe sewing-machine, and is kept in position by a vertical bar, B, passing through a slot in the table.

,The upper end of the plate is turned, to provide a swivel, o1' hinge, for the striking-arm C, the ends of vwhich are curved at nearly right angles in opposite directions, one end entering the swivel, and the opposite angle is provided with a friction-roller, D, whiel1 is operated by the bar C, which is in turn operated by the nccdle-arrn.

Near the lower curve of the arm C is also ,placed a friction-roller, D', which operates upon the conical cam aulne-end ot' the tuck-bar.

Ihe tuck-bar, or creasing-arm, is bent at right angies, and one end carries the conical cam E, and the opposite end the creaser F, which is provided' simply with a longitudinal groove. This bar works 1n a `)ournal at one side of the plate.

When the needle-arm plays upon the friction-roller l) at the end of the arm C, the roller D plays along the conical cam or roller E, which causes the creaser to impinge upon the, cloth to form the crease.

The spiralspringFaround the bar, throws it back when relieved bythe needle-arm.

The force of theblow, or weight of the creaser7 is regulated by moving the conical cam on 'the thread at the end of the tnciebar, thereby lengthening or shortening the stroke of the needle-arm upon the rollerD.

Ihe face of the base-plate is marked 1, 2, 3, indicating inches, which are subdivided into smaller' spaces; and the width of the tuck is regulated by adjusting the base-plate under the slotted holdingplate, which is held in place by a set-screw, and is grooved to receive therod H, which acts as a guide for the base-plate. The holding-plate may also assist in holding down the plate on the table.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

l. The arm C, having thereon friction-rollers D D", and operated by the needle-arm in combination with the conical cam E, substantially as described.

2. The. adjustable conical cam, in combination with the creasing-arm for regulating the force ofthe arm on the fabric, to form the crease, as desired.

3. The combination, with the arm C, and the rocking' creasing-bar F, of the base-plate A, slotted holding-plate G, an'd rod H, when all are constructed and combined as and for the purpose set forth.

In testimony whereof, I `have hereunto set my hand and seal.

JOHN H. MooNnY. [n s] Witnesses: d

C. W. M. SMITH, ALFRED Futon.

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