US76385A - Joseph w - Google Patents

Description

@teiten graine gatwt @time JOSEPH "i-BARILETI, 0F YORK, N. Y,

Letters Patent No. 76,385, dated April 7, 1868.

IMPROVEMENT III 'SEWINGHMAGEINE TO ALL WHM I'I MAY GONCERN:

Be it known that I, JOS-PH W. BARCELTT, of thecity, county, and State of New York, have invented new and useful ImprovementsV in Sewing-Machines; and I do hereby declare that the following is a full and exact description thcieof, reference being had to the accompanying drawings, and the letters of reference marked thereon.

The nature of the said inventionfconsists chiefly, first, in the construction and arrangement of gear-teeth upon the d1ivi-ng-wl1eel in`such a manner that the said wheel is geared directly into a pinion fixed upon the drivingshaft, (shown in iig. 1,) by the use oi` which the secend gear, generally used in connection with the pinion and driving-wheel, is dispensed with, and the speed ofthe working parts orn the machine is greatly accelerated thereby, without increasing "the revolutions of the driving-wheel, especially desirable in machines adapted for use by hand; second, in the novelconstruotion and arrangement of the means employed in 4sewing the single-loop stitch. ,l n i d Figure is a plan of a single-thread sewing-machine, showing the arrangement of gear-teeth upon the driving-wheel, working directly into a pinion fixed upon the driving-shaft.

Figure 2 is an end elevation.. p

In the said drawings, A'is-the frame, B the internally-toothed driving-wheel, engaging with the pinion R on the upper rod C, or shaft which actuates the needle-bar. D is the eccentric, which imparts motion, through the connecting-rod E, to tbe'rocling shaft F, hook G, .feed-.cam II, and .feed-bar J.v The spring L is uscd to make more positive the action-0f the feed-bar J'in its downward and backward motions, in feeding the material to be sewn, one end of the said spring being iixed to the under side of the cloth-plate, the otherv end bearing upon the under side oi' the feed-bar J. By the use of the eccentric, D, the-'driving-shaft may be turned in either direction without destroying or affecting the operation of the machine. The feed-bar-J is supported upon the under side of the cloth-plate, and operated bythe cam II. A projection is formed upon the 'bar J, for the cam H toact upon to produce thc forward movement of the said 'bar J, the distance the latter travels being regulated by the adjustable 'screw K.. The cam H is so formed that it remains, throughoutiits entire movement, in contact with the under'suri'ace ofthe feed-bar J, preventing thereby any knocking of the latter,

which would otherwise .bc occasioned if allowed to drop suddenly in its downward or backward m'otion upon' the Isurface of the feedcam II.

Having thus described my improvements for thcproduction of a simple, low-cost, rapidlyoperating sewingmachine, I claim Y 1. In combination with the rods G and F, the internally-toothed gear-Wheel B, pinion R, eccentric D, rod E, and hook G, constructed, arranged, and operating substantiallyas and for the purposes set forth.

2. In combination with the rods C and F, the eccentric D, rod'E, cam H, hook Gr, spring L, feed-dog J, and screw K, constructedand operating substantially as and for the purposes set forth.

Josiirrr W. BARTLETT.

x Witnesses:

J. W. Falconer, vl?. W. A'rmNsoN.`

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