US22220A - Improvement in sewing-machines - Google Patents

Description

C. RAYMOND.

Sewing Machine.

Patented Nov. 30, 1858.

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UNITED STATES G. RAYMOND, OF BRATTLEBOROUGH,

VERMONT, ASSIGNOR TO VILLFORD H. NETTLETON, OF SAME PLACE.

IMPROVEM ENT IN SEWING-MACHINES.

Specification forming part of Letters Patent No. 22,220, dated November 30, 1858.

To aZZ whom it may concern:

Be it known that 1, Cinemas RAYMOND, of

- Brattleborough, in the county of WVindham and State of Vermont, have invented, made, and applied to use certain new and useful Improvements in Sewing-Machines; and I do hereby declare that the following is a full, clear, and exact description of the construetion and operation of the same, reference be-,

- cloth; also, in a new construction of looper that forms a double chain-stitch, said looper being formed of two pieces, the first of which passes through the loop and spreads the same, and then the second moves up and the needle takes a loop therefrom, and then the two, retiring, drop the first loop around the second,

and so on.

In the drawings, a is the bed of the machine.

6 is the fly-wheel or driving-pulley on the shaft 0, supported in the cam-house (Z. 6 is an eccentric giving motion to the fork f and needlearm that are set and move on the fulcrumpin 1. h is the needle-bar, and i is the needle. is is the arm receiving the needle-bar. Z is the spool of needle-thread, and 2 and 3 are eyes, through which the thread (shown by red lines) passes to the needle These parts thus far may be of any desired character, and operate as usual.

I will first proceed to describe the feeding device, which is as follows Around the eccentric e, or its equivalent, I put a band or eye, m, and stock, to which a rack, n, is attached bya screw, 6, passing through a slot, 7. o is a pinion, which the rack-teeth n fit into. This pinion o is on a shaft set in a standard, 2, and has around its shaft a worm-thread taking a wheel, 1), on a sleeve around a stud, 8, on the other end of which sleeve is a roller, q, pass ing through the bed a. ris a roller 011 astock, s, in the arm k, which roller may have a rounded edge sectionally, and is to be kept down to the rollerq or intervening material by a suitable spring, 10 and a fingerpiece may be provided at 11 by which to raise-said roller 0'. The operation of this part is that, as the rack n and stock m move back and forth by the eccentric 6 between the spring-finger 5 and the part 4 of the bed, the outer end of the rack has also an up anddown motion, which causes the teeth to strike into and turn the pinion 0 at the time the needle 2 is out'of the cloth, which motion,being communicated through the worm 1) to the roller q, feeds the cloth along with a definite and certain motion, and according to the distance which the rack 12 is projected from the stock m, (the screw 6 and slot 7 allowing of the same,) so the end of said rack will pass more or less over the pinion 0, and remain in contact a greater or less time before the end draws away and out of the teeth 011 the said pinion as it proceeds to its extreme retracted position, and by consequence the feed will be more or less each stitch.

The looping device is composed of a looper, 13, on the end of a slide, a, that moves in V'- formed ways 12 and receives a reciprocating motion from the cam t, to which the end of this slide a is kept in contact by a suitable spring, 22. The side of this slide a, next the bed a, is grooved out to receive a bar, 00, the

end of which is formed as a point, 14, that becomes a carrier of the second thread (shown in blue) from the spool 20. The bar 00 has a pin, 15, projecting through the slot 16 in the slide a; and y is a spring friction-plate, which holds the bar a; stationary, unless moved by the ends of the slot 16, taking the pin 15. 18 is awire that may be used to guide the loop of needle thread as it forms by the rising of the needle. The roller q is shown hollow, for the conven ience of operating the loopers. The parts being properly timed, the cam it causes the looper 13 to enter the loop of needle-thread, the carrier 14 remaining stationary until the wider part 17 of the looper 13 has spread the loop of needle-thread on each side of the po sition from which the needle 11 has by this time withdrawn, when the end of the slot 16 taking the pin 15, the slides 10 and a: move together, and the carrier 14 is brought up into the position shown in Fig. 4, being on the opposite side of the needles path to the looping-point 13. The looper 13 is then forced back by the earn it, the carrier 14 and bar 00 remaining stationary, and the said looper 13 draws its loop of needle-thread out of the way of the. again descending needle, which needle takes a loop of second thread by passing between it and the carrier 14, at which moment the first loop is dropped from the point 13, and both looper and carrier move back to the position Fig. 1, (by the slot 16 taking the pin 15,) the first loop is drawn up by the descent of the needle, the

2. The slide u, carrying the looper 13, and

provided with the slot 16, receiving the pin 15 on the bar so, that is formed with the carrier 14 for the second thread, whereby the threadcarrier 14 is actuated by the reciproeations of the looper 13, substantially in the manner an for the purposes specified.

In witness whereof I have hereunto set my signature this 18th day of May, 1858.

CHARLES RAYMOND.

Witnesses:

'GEO. NEWMAN, EDW. KIRKLAND.

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