US67730A - Impeovement in mechanism foe - Google Patents

Description

@uitrit tette @anni @frn IMPROVEMENT IN MEGHANISM FOR APPLYING POWER TO MACHINERY.

tlgt Segnali nenn tu in time rtirs ttmt mit mating pmt nf 1p: smite.

TO ALL WHOM ITMAY CONCERN:

Be it known that I, L. Cuantas, of the city, county, and State of New York, have invented a new and improved Power Mechanism for Sewing Machines; and that the following description, taken in connection with the accompanying drawing hereinafter referred to, forms a full and exact specification of the same, wherein I have set forth the nature and principles of my said improvements, by which my invention may be distinguished from all others of a similar class, together with such parts as I claim, and desire to have secured to me by Letters Patent.

This invention relates to a new and useful adaptation of a clock movement with a spring or weight as a power to the driving of sewing machines.

The invention consists in an imp rovcd means for controlling the power, a substitute for 'the pendulum, as hereinafter fully shown and described, and also in an improved stop mechanism and a brake, all of which are hereinafter fully shown and described, whereby complete control is obtained over the motor, its stopping and starting, and the regulating of its speed being at the will of the operator. In the accompanying drawing a side view of my invention is shown applied to the stand of a sewing machine;

A represents the stand of a sewing machine, which may be of the usual or any proper construction, and B is a system of gearing precisely like an ordinary clock movement. In this instance a spring, C, is employed for giving motion to the movement, but a weight may be substituted for it if desired. There is nothing peculiar in the construction or arrangement ofthe clock movement, in itself considered, with the exception of the escapcment, which consists of the usual scape-wheel D, anchor-pallets a a', with a counterpoise, b, attached, 'as shown clearly in the drawing. This' counterpoise b is simply one which may be attached tothe shaft c, on which the pallets a a are secured, or be attached directly to the centre of the pallet-arms, the arm orcounterpoise projecting from one side of the pallet-arm or axis thereof. This arm or counterpoise serves in lieu of a pendulum, and regulates or controls the power of the spring or weight. A slender arm, b', projects from the opposite side of the shaft c, and has a curved bar or fork, c', at its end, 'within the concave of which' there is a shaft, d', of the movement. This arm controls the extent of the play or vibration'of the pallets, as will be fully understood by referring to the drawing, the ends of the curved haa` or fork coming in contact with the shaft d atcthe termination ot' each stroke or vibration. E represents a stop mechanism, which is composed of two levers d d', connected by a link, e. The lever d extends upward through a slot, j, in the top of the stand,

and the other lever, d', is provided at its outer end with a curved arm, g, which, when thrown upward, catches under the arm or counterpoise b and holds the latter in a raised position so that the upper pallet a. will be kept engaged with the scape-wheel D, and serve as a lock or stop, preventing the movement of the parts. F is a brake composed of an elastic or spring bar, one end of which is attached to the frame G, as shown at h; and the opposite end, when applied, bears on a shaft,'t', of the clock movement, and serves as a drag. The brake,

by virtue of'its own elasticity, retains itself abovethe shaft t', and it is brought down upon the shaft, when.

required, by means of a treadle,j, as will be fully understood by referring to the drawing. The clock movement, when in operation, gives motion tothe drivinglshaft k of the sewing machine. The brake or stop may be applied at any time by shoving-the lever d forward. I

Having thus described my invention, I claim as new, and desire to secure by Letters Patent- 1. The arm or eounterpoise b, and arm b', provided with the curved bar or fok c', in combination with the pallets a a', and the clock movement applied to a sewing machine for the purpose of operating the same,I

substantially as shown and described.

2. The stop mechanism composed of the levers d d and the link e, with the arm g on the end of the lever d,'all arranged in connection with the pallets a a', to operate in the manner snbstantially as and for the purpose set forth.

3. The brake F, composed of an elastic or spring bar, arranged in relation with the shaft t', and connected with the treadle j, substantially as and for the purpose specified.Y

LOUIS CURDTS.

Witnesses:

WM. F. McNAMARA, ALEX. F. Rename.

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