US238678A - Electro-magnetic sewing-machine motor - Google Patents

Description

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- G. P. GREEN. 1 EleGtro-Magnetic Sewing Machine Motor. No. 238,678. .Patented March 8,1881.

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. G. P. GREEN. Electro-Magnetio Sewing Machine Motor. No. 238,678. Patented March 8,1881. i

1 UNITED STATES PATENT OFFICE.

GEORGE F. GREEN, or KALAMAZOO, MICHIGAN.

ELECTRO- 'MAG NETIC SEWING-MACHINE MOTOR.

srscmcmonfsm part of Letters Patent no. 238,678, dated March '8, i881.

Application filed January 30, 1879. i I

To an whomz't may concern:

Be it known that I, GEQRGE F. GREEN, of Kalamazoo, in the county of Kalamazoo and State of Michigan, have invented a new and useful Electrollotor Sewii'ig-\'Iaclii|ie; and I do hereby declare that the following is a full and accurate description of the same.

lily invention consists in a rotating electromotor mounted in a frame adapted to be attached to the head or frame of a sewingniachine, and provided with a pinion on the motor-shat't adapted to mesh with a suitable wheel on the main shaft of the sewing-machine, and in the several devices whereby the control of the machine and motor is eti'ected.

That others may fully understand my invention I will particularly describe the same, havin g reference to the accompanying drawings, wherein Figure 1 is a perspective view of my machine with the motor attached and in operative condition. Fig. 2 is a rear elevation of the same, the driving-wheel being removed. Fig. 3 is a perspective of the motor side of a sewing-mm chine in operative condition. Fig. 4 is a side elevation of the controlling-lever.

My motor is mounted in a frame having arms adapted and extending to the machine frame or head, or, if preferred, the arms or lugs to secure the motor may he parts of the machine, the design being to make the motor a part of the sewing-machine head or frame. The graduating or starting lever A, with its attachments, may also be madeparts of the sewing-machine head, and the sewing-machine will then be portable and will not require any special stand or table of its own while being operated. A long flexible comluctmg-cord, N, will make the necessary connection in any part of the house where the battery-wires have been placed.

My motor belongs to the class of revolvin g armatures, and is fully described in my Patent No. lSa,469,-November21,1876. It is mounted upon a sewingmachine head or frame, preterably in the position shown, so that the p nion n on the arn'iaturc-sliat't may mesh with a toothed wheel, 0, on the needle-bar shaft, behind the balance-wheel lll. At aproper point a pad or circuit-breaker, K, is located and the machine is started or stopped by pressing this pad or releasing it, '.mdthis is convenientlyetlected by the levels J and G,

which are severally pivoted to the frame of the G is pressed forward the end of lever J will press upon the pad K and close the circuit, and when said lever G is released the circuit will open and the machine will stop. Llo-Q render this operation conveniently underco trol of the operator, I arrange a lever, A,-: that it may be pressed upon by the operators arm and pivot it to a lag which may be attached to the base of the machine. For convenience I prefer to make this lever in two parts, pivoted to the same fulcrum, and united by a stop-pin, s, sothat when part A is depressed part B will be raised; but part A may be imlependently raised and follow. A spring, U, is attached to the part B to keep it down and counterbalance the weight of the arm. At the extremity of the partB apad or brake, L, is placed, so that when the part A is sufliciently depressed said brake may act upon the wheel M and stop the machine. In the side of the part B there is a projectingpin, F, which rests below the end of the lever, G, and engages therewith wheirpart B is raised up. a

The lever G is thereby caused to close the circuit on the pad K. A notch,'q, in the side of the lever G receives the pin F and holds the two levers in proper engagement while the machine is to be in motion so as -to release the arm from lever \Vhen the maehii'ieis tobc stopped thelever A is depressed still farther, when the pin F passes above the engaging portion of the lever G, and the lat-tcris liberated and the circuit is broken at K. The same motion of lever A will, if continued, carry the brake L up against the wheel M. When thelevcrB returns to itsinitial position the pin F pushes the lever G out of its way.

To start the machine a bu mper, e,is mounted upon a swinging arm attached to the'l'ever B, so that when said lever rises up the bumper cuconnters the wheel M and causes it to move far enough to movcthearmature ofl'thedead'point, it'it chances to be so placed, and the motor. will commence to move innnodiately. Unless the armature chances to have stopped on its dead point this service of the bumper will not be required. A spring, (I, retains the bumper always in ett'ective position.

I claim-- 1. A sewing-machine head or frame provided with a toothed wheel, 0, combined with a re volving-arnmtnre electric motor permanently attached to said head or frame, and a pinion, a, on the shaft of said armature in mesh with said toothed wheel, substantially as set forth.

2. The pin F, in combination with guide G,

the pin F working or passing on either side of guide G, in the manner and for the purposes described.

3. The combination of levers A and B with spring 0 and pad L, all operated in the man her and for the IHH'POSPS(lGStfil'lbQd.

4. The lever 13, provided with the laterallyprojecting pin F, con'ibined with the lever G,

provided with a lateral offset and a notch, q,

whereby the motion of said lever 13 in one direction will cause said pin to engage said lever G to push it into action, and by engaging with said notch hold it in action, and by a continued motion of B said pin' will be passed over and disengaged from said lever-Grand return to its initial position by the other side.

5. The wheel M on the sewinganachine shaft, combined with the lever 113, provided at; its end with a pad or brake, L, capable of striking said wheel on one side of a line vertical as to its center, and the buffer 0, capable of striking said wheel on the other side of said vertical line, whereby a movementof said lever in the same direction may either stop or start said wheel, as set forth.

(3. The levers A B, pivoted with same axial line and coupled together by olt'sets or lugs S, in engagement when said lever Ais moved in one direction, but disengaged when said lever moved in the other direction, combined with the bumper e and pad L on the lever B, whereby the machine may be stopped or started by a movement in the same direction, or the lever folded to be out of the Way during storage or transportation. I

In testimony that I claim the above I have hereunto subscribed my name in the presence of two witnesses.

GEORGE F. GREEN.

Witnesses:

JAMES H.- DAVIS, U. W. BOWEN.

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