US268226A

US268226A - Joseph e

Info

Publication number: US268226A
Authority: US
Publication date: 1882-11-28
Anticipated expiration: 1899-11-28

Description

(No Model.)

J.R.HEBERT.

LOOSE FLY WHEEL FDR SEWING MACHINES. v No. 268,226. Patented Nov. 28, 1882.

UNITED STATES PATENT OFFICE.

JOSEPH R. HEBERT, OF BROOKLYN, NEW YORK, ASSIGNOR TO ELIAS'A. I

WILKINSON, OF NEWARK, NEW JERSEY.

LOOSE FLY-WHEEL FOR SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 268,226, dated November 28, 1882.

7 Application filed May 6,1862. (No model.)

To all whom it may concern Be it known that I, JOSEPH R. HEBERT, of Brooklyn, New York, have invented a new, useful. and important Improvement in Loose Fly- Wheels for Sewing-Machines, described in this specification and the drawings thereof.

The invention consists of improvements relating to mechanism for stopping andstarting sewing mechanism while the treadle andflywheel to operate the same continuein motion.

Figure l is a longitudinal section of the improvement. Figs. 2, 3,4, 5, and 6 are detail views of the same. I

In the form of construction shown a flywheel, A, of asevring-machine is placedloosely upon a drivingshaft, B. The end of the driving-shaft has slots a b, into which is placed a spring-fork, 0, against a retracting-spring, d, p aced in a recess in the end of the drivingshaftx Against the fly-wheel, on the drivingshaft, over the spring-fork, isplaced a washer, O, held to the shaft by a setscrew, e, and having a slot, j, which receives the pin g to limit the movement of the adjusting-nut D, which is screwed onto the end of the driving-shaft. When the adjusting-nut is screwed up close to thew-asher the spring-fork is forced inwardly and [1pwardly,and by friction locks the flywheel to the driving-shaft. When the adjusting-nut is screwed back from the washer the fiy-wheel is released. Consequently when the flywheel is in motion and locked to the driving -shaft any connected sewing mechanism would be operated, and when released, as afora said, such mechanism would not be operated. Therefore by manipulating the adjusting-nut either objectcan be attained, and stitching can be stopped or started as desired, at the will of the operator, in case of accident to needle or thread in sewing or for winding bobbins, with- 4.0 out stopping the treadle movement.

The details of construction may be varied within the scope of my improvement.

I claim as my invention-- 1. The combination of fly-wheel A, shaft B, 5 having grooves a b, spring-fork 0, retractingspring (I, washer 0, having slot], and adjusting-nut D, having pin 9, substantially as set forth.

2. The combination ofafly-wheel,adriving- 5o shaft having side slots, a spring-fork in the side slots and in connection with a retractingspring. a washer having a limiting-slot, and an adjusting-nut over the spring-fork on the end of the shaft and limited'iu its movement 55 by the limiting-pin in the limiting-slot, substantially as set forth.