US177084A - Improvement in devices for operating sewing-machines - Google Patents

Description

GEORGIANA "L. TOWNSEND.

v DEVICE FOR OPERATING SEWING-MACHINES.

- No.177,084. Patented May 9,1876.

IJV'VEJVTOR dawn/(dud N, PETERS, FNOI'O-LITHDGRAPNER, WASHINGTON. O C.

UNITED STATES PATENT OFFICE.-

GEORGIANA L..TOWNSEND, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN DEVICES FOR OPERATING SEWING-MACHINES.

Specification forming part of Letters Patent No. 177,084, dated May 9, 1876; application filed April 10,1876.

in Mechanical Movements for Operating Sewing-Machines, or other treadle-machines; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, and t0 the letters of reference marked thereon, which form a part of this specification.

Figure 1 is a perspective view. Fig. 2 is a transverse section on line w of Fig. 1.

My invention relates to mechanical movements for operating sewing-machines, or other treadle-machines, and consists of a vertical lever extending through a slot in the top of the machine, and connected with the crankarm of the drive-wheel, and provided with a handle, adjusted-above the top of the machine to be operated by a vertical motion of the hand, as hereinafter described.

In the drawings theimprovement is illustrated on an ordinary treadle-machine havin g the drive-wheel at the right; but it is evident that with slight modifications it may be attached to and used on any other machine.

A represents a vertical lever, the lower end of which is attached to the crank-arm c of the drive-wheel B, and the upper part, provided erences of the operator.

motion by which it is operated. When the vertical lever is used the pitman O is detached, as shown by dotted lines in the drawings, thus dispensingwith the weight of the pitman and treadle D, and securing the full power of the drive-wheel. machine may be run more rapidly and with less fatigue to the operator than by the treadle or ordinary crank. The machine may be readily adjusted at any time .to be operated by the lever'or by the treadle, to suit the pref- And in long continued work the machine may be changed, in a moment, from the lever-movement to the treadle-movement, and vice versa, to rest the tired limbs of the operator without stopping the Work.

My improved mechanical movement may be applied to any other machine operated by a treadle, as well as to sewing-machines.

What I claim as new, and desire to secure by Letters Patent,.is

An improved mechanical movement for operating sewing-machines, consisting of an upright lever, A, connected at the lower end to the crank-arm of the drive-wheel of the machine, its end passing through a slotin the table and provided at the top with a handle, I), and. adjusted to be operated by a reciprocating vertical motion With the hand, substantially as and for the purposes described.

In testimony that I claim the foregoing as my own invention I affix my signature in presenceof two Witnesses.

GEORGIANA L. TOWNSEND.

Witnesses:

W. MORGAN LANSDALE, THOMAS A. PORTER.

With the vertical lever the

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