US269218A - Thomas a - Google Patents

Description

(No Mbde l.)

T. A. MAGAUL-AY.

SEWING MACHINE.

No. 269,218. Patented Dec. 19, 1882 UNITED STATES ATENT OFFICE.

THOMAS A. MAOAULAY, OF NEWV YORK, N. Y.

SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 269,218, dated December 19, 1882,

Application filed November 3, 1882.

To all whom it may concern:

Be it known that LTHOMASA. MAoAnLAY, of the city, county, and State oi New York, liaveinvented certain new and useful Improvements in Sewing-lvlachines, of which the following, with the accompanying drawings, is a specification.

Similar letters refer to like parts.

Myinvention relates to that class of sewingmachines in which a rock-shaft having an increased axial motion and arotaryfeed-operating shaft are used, as hereinafter more fully described.

In the drawings, in which Figures 1 and 2 represent a portion of a sewing-machine, X X indicate the rear part of the bed and arm of a sewing-machine. A is the mainshai't. B is the eccentric thereon. U is a pitman connected by pin a to bell-crank lever D, the longest arm of whichhas a slot, 6. Said lever is pivoted to the bed X bystud F. E is a rock-shaft, which is intended to carry a shuttle by a suitable fixture at its front end, and has 'a crank, g, fixed to its rear end. G is a crank pin, entering slot 6 of the Bell-crank lever D. H is arevolvingfeed-operating shaft, having a crank, O. l is a pitman-lever connected at one end to the pitman O by stud K,

its other end being connected to the crank 0- (No model.)

Motion being given to the main shaft A, the eccentric B imparts a reciprocating motion to the pitman O and the bell-crank D through the pin a, and from said bell-crank to the rockshai't E through the pin G and crank g. The pitmanlever I, being fulcrumed at d to the radius-bar R and pivoted to the pitman (J, receivesavertical and lateral motion. Its lower end passes around the center of the shaft H, and, being connected to the crank 0 by the link N, gives the shaft H a rotary motion. This rotary shaft is intended to operate a feedbar by the usual connections.

The pitman-lever may be connected directly to the eccentric by having a wider face on the eccentric, and the pitman-lever having an enlarged eye or strap to span the eccentric; ora separate eccentric maybe provided for it, instead oif being pivoted to the pitman O at K, and a slot and pin may be used instead of the radius-bar, and other changes may be made without departing from the spirit of my invention.

Having described my invention, I claim- The combination of the shaft A,.eccentric B, pittnan O, lever D,- crank y, and shaft E with the pitman-lever I, radius-bar R, link N, crank 0, and shaft H, substantially as set forth.

, THOS. A. MAGAULAY.

Witnesses:

W. A. JONES, J. S. BROWN.

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