US330195A - Adin mayo baebeb - Google Patents

Description

(No Model.)

A.M..BARBBR.

SWING MACHINE.

Patented Nov. 10,V 1885.

l '"B f UNITED STATES PATENT ADIN MAYO BARBER, OF BRIDGEPORT, CONNECTICUT, ASSIGNOR TO THE AMERICAN HAND SEWING MACHINE COMPANY, OF NEW YORK, N. Y.

SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent N o. 330,195,dated November 10, 1885.

Application filed March 2,1885.

To wllwwm it may concern:

ABe it known that I, ADIN M. BARBER, a citizen ofthe United States, residing at Bridgeport, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Sewing-Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to that class of sewingmachines whose operative parts are mounted upon and driven by a pair of levers or handles pivoted together, of the character described in my Letters Patent Nos. 306,713 and 306,996, dated October 21, 1884, and to improvements in the aforesaid class of machines, whereby they maybe attached to a stand or table, and operated directly by hand, or by treadle, or by treadle through a drivingshaft, and whereby a chain-stitch may be produced instead of a lock-stitch.

In the drawings, Figure 1 is a side eleva tion of the machine, shown mounted upon a table, with mechanism connected for operating through fly-wheel in the lusual way, and for operating by hand when disconnected from the ily-wheel. Fig. 2 is an elevation of the reverse side of the machine, showing needle down, and mechanism whereby the levers may be operated by the foot through a simple stirrup and pitman, or by hand when stirrup and pitman are detached. Fi g. 3 is a plan of looping-hook and driver for same; and Fig. 4 is a detail showing loop-spreader.

A and A are two pivotally connected levers upon which all the working parts of the machine are mounted. The lever A carries the looping-hook, work-plate, and spool, and is adapted to be secured to a holder, B', which is rigidly connected with the table B. Lever A carries the needle, and is connected by a knuckle-joint with a vibrating or tilting lever, C. This lever is pivoted on the end of a link,

c, which is carried on the back of the holder- B, and it is operated through a pitman, o', and eccentric mounted on a small shaft beneath the table, which is driven through treadle and pulley. It is obvious ythat any equivalent of the lever C and its connections with Serial No. 157,536. (No model.)

the machine might be substituted for it and as good results obtained. If desired, the pitman c may be disconnected from the lever C, and said lever then be operated by hand. In such case a spring is provided to throw the lever upward.

In Fig. 2 I have shown a simple stirrup and connecting-rod for operating thelever C as an alternative of treadle, ily-wheel, and eccentric connections shown in Fig. 1. This Lstirrup may he unhooked and the machine operated by hand, at the will of the operator. In either case I provide a spring to give lever C the upward movement.

A swinging post, D, is mounted on the lever A, and is provided at its upper end with two lugs, d d, against which cani-faces on the pieces e e work. The lower end of this post has extending from it an arm, d, the end of which plays between cam-jaws g, formed at the inner end of the 'looping-hook E. The looping-hook is pivoted a little at one side, and is arranged to vibrate around and to take the loop from the outside of the needle. A small pin, v3, projects from the under side of the hook, near the point, for the purpose of preventing the loop from slipping too far over the point of the hook. A loop spreader, x, Fig. 4, consisting of a triangular piece of metal, is attached to the under side of the work plate, near the hole that the needle passes through, and is arranged so that one of the points of the triangle will strike between the strands of the loop and hold them apart until the needle passes through the loop.

The spool is mounted in any convenient manner on the inner end of lever A, aud the thread passes through guide-eyes and a suitable tension device to the needle.

The same construction of presser-foot and feed as is described in my Letters Patent No. 306,996 is used in connection with this machine.

The operation of forming the stitch is as follows: Pressure being applied to the lever C, the lever A is thrown downward, aud the needle passes through the fabric and below the looper. As the lever A moves, the cam e', acting on one of the lugs d, throws the arm d in the direction indicated by the arrow, Fig. 3. This moves the hook in a contrary direc- IOO tion, or away from the needle.

the hook forward, or toward the needle, and it passes between the thread and needle just before the eye of the needle has risen to the hook. The thread has now been caught over the point of the hook and is held from slipping along the hook by the pin t'. needle continues to rise the hook continues its forward movement away from the path of the needle, carrying the loop with it, until its two threads have been opened by the triangular spreader, at which time the lever A is at its highest point. After the needle has passed entirely out of the goods the feed operates and moves the work forward the length of one stitch. While'the needle is moving toward the work there islost motion between the camjawsg and the arm d to allow the Vneedle to pass through the loop before the hook movesback to drop it. Having now described my invention, what I claim is l. The combination of a pair of levers of the first order, stitch-forming mechanism, means forclamping one lever to a support or table,

va vibrating arm for operating the other lever, and a treadle for operating the vibrating arm, substantially as described.

As lever AQ moves upward thecam e operates to throw As the 2. The combination of a pair of levers of 3o the first-order pivoted together, stitch-forming mechanism, means for clamping one lever to a support or table, a vibrating arm for operating the other lever, and a treadle-driven shaft for operating the vibrating arm, substantially as described. o

3. The combination, in a sewing-machine whose stitch-forming mechanism is mounted upon and operated by two levers of the rst order pivoted together, of a holder for clamping one lever to the table, a vibrating arm for operating the other lever, and a link for supporting the vibrating arm, substantiallyas described.- v

4. The combination, in a sewing-machine,

of a pair of levers of the rst order pivoted together, and a vibrating looper driven'by an oscillating lever which is operated by the .relative movement of the levers, substantially as described.

In `testimony whereof I affix my signature in presence of two Witnesses.

ADIN MAYO BARBER.

Vitnesses:

WM. H. KELsnY, R, VALENTINE.

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