US67652A - Improvement in feeding-device poe sewing machines - Google Patents

Description

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Feeding Device for Sewing Machines.

Patented Aug. 13, 3867.,

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JAMES A. HOUSE AND HENRY A. HOUSE, OF BRIDGE-PORT, CONNECTICUT, ASSIGNORS 'lC WHEELER 8t WILSON MANUFACTURING COMPANY.

Letters Patent No. 67,652, daterhAttgust 13, 1867.

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TO ALL WHOM IT MAY CONCERN:

Be it known that we, JAMES ALronD House and Hussy ALoNzo House, both of Bridgeport, in the county of Fuirfield, and State of Connecticut, have invented certain new and useful improvements in Feeding-Devices for Sewing Machines, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, which make part of this specification, and in Wl1l0 l1 Figure 1 represents a plan or top view of so much of a sewing machine embracing our improvements as is necessary to illustrate our invention, the'stitching-plate and all the parts above it being removed.

Figure 2 represents a. view, in elevation of the same, as seen from the front.

Figure 3 represents a similar view of the feed-regulator, and

Figure 4 a vertical transverse section through the feeding-device at the line x of fig. 1.

Our invention is more especially adapted to machines of the F Wheeler and Wilson class, and its objects are to render the feed adjustable and easily to be removed, and also to render the machine noiseless, t0 whichends our improvements consist- First. In an adjustable feed-frame, arranged between the driving-pulley and the standard of the frame, and having both a. vertical and lateral vibration.

Second. In combining a vibrating feed-frame with a cam,,so shaped as to give an increasing movement as it recedes from its centre, by means of an interposed adjusting lever pivoted to more from or towards the axis of the cam, without moving the frame.

Third. In adjusting the feed vertically by means of a lifting-lever in the feed-block.

In the accompanying drawings our improvements are shown as applied to'aWheelcr and Wilson sewing machine. The mechanism is supported in two standards, B B, mounted on a bed-plate, A. The main'shaft C is mounted in proper hearings in these standards, and rotated by a band encircling the pulley D. An eccentric, E, on this shaft vibrates the needle-arm by means of a pitman, F. A. rotating-hook, G, is mounted on the end of the drivingshaft.

The feeding-devices to which our improvements more particularly relate consist of two serrated lugs, kit mounted on a block, H, fitting loosely in a groove in the standard 13, directly over the axis of the main shaft, and attached to a magnet-shaped frame, I, which slips over the main axle, its feet entering sochetsuin the bedplate. The cam K, on the end of the driving-pulley D, in its rotation, imparts a horizontal vibratory movement to this frame, while a lifting-cam, L, on the main axle, gives it vertical vibration. The feed can be raised or lowered -by,means of a set-screw, in, passing through the feed-block H, and acting on a lever, M, hinged at one end to play vertically in a slot in the under side of the block. To vary the stroke of the feed, and consequently the length of stitch, an elbow-lever, N, is pivoted to turn vertically on a pivot, it, in the frame-I. A boss or swell, n, on the inner end of this lever, rests against the face of the cam. A spring, 0, one end of which is secured to the standard B and the other end to the vibrating feed-frame I, presses this frame and lever N both downward and inwards towards the driving-pulley. The cam K is so shaped as to give an increased motion as the distance from its centre is increased, while the lifting-cum L lifts uniformly. By this means the vertical movement of the feed remains unchanged, while its horizontal movement is varied, the vertical adjustment of the feed being effected independently, as hereinbefore explained. The cone shape of the lifting-cam renders its movements more smooth, and avoids shocks and jars.

It is obvious, by the foregoing description, that our improvements secure a simple, compact, and noiseless machine, and one capable of rapid adjustment, removal, or replacement of parts.

By removing the table and theglass part of the resser-foot, and lifting the spring 0 out of its fastening in the vibrating-frame I, the whole feeding-apparatus can be lifted out of the machine.

The general construction and operation of our machine being similar to that known as the Wheeler and Wilson, a detailed description of its parts is deemed unnecessary here.

What We claim as our invention, and desire to secure by Letters Patent, is-- 1. The vibreting feed-frame I, constructed, :irranged, and operated substantially-as and for the purpose described.

2. The combination of the vibrating feed-frame with the adjusting lever and cam, for the purpose of varying the length of the feed.

3. The combinatio iy krhe vibrating feed-block with the adjusting lever and set-screw, for the purpose of adjusting the feed vertically.

' In testimony whereof we have hereunto subscribed our names.

JAMES A. HOUSE, HENRY A. HOUSE.

Witnesses:

GEORGE C; BISHOP, OHARLESIH. DIMOND.

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