US274094A

US274094A - Lebbeus b

Info

Publication number: US274094A
Authority: US
Publication date: 1883-03-13
Anticipated expiration: 1900-03-13

Description

(No Model.)

L. B. MILLER.

MECHANISM FOR GONVERTING MOTION. 'No. 274,094. Patented Mar. 13,1883.

. INVBNTOR {MM flalw vawl BY fwm, x @W ATTORNEY UNITED STATES PATENT OFFICE.

LEBBEUS B. MILLER, OF ELIZABETH, NEW JERSEY.

MECHANISM FOR CONVERTING MOTION.

SPECIFICATION forming part of Letters Patent No, 274,094, dated March 13, 1583,

Application filed November 4. 1882. (No model.)

T 0 all whom it may concern Be it known that I, Lnnnnos BALDWIN MIL- LER, of the city of Elizabeth, in the county of Union and State'ofNew Jersey, have made an invention of certain new and useful Mechanism for Converting Motion, especially applicable to the shuttle-movement of sewing-machines; and Idohereby declare thatthe following is a full, clear, and exact description and specification of the same.

' anism, which is shown as applied to a sewingmachine beneath the bed-plate.

' A represents the lower end of a revolving shaft, from which, by means of a crank, a, or equivalent, motion is communicated to the connecting-rod B, the other end of which is pivoted to the lever G at the point b, between the two links D and E,'which are also respectively pivoted tosaid lever O at the points d and e, and to.the bed-plate G at the points (I and 0, thus forming swinging f'ulcrums' for said lever. The end of said lever U is provided with a pin, roller, or projection, f, adapted to enter a slot in the outer end of the crank F of the upright shaft j, which passes, through the bed-plate, and to which, above 'the plate, is attached the "shuttle-carrier. As the shaft A revolves 1t communicates to the connecting-rod B a reciprocating movement; The lever G, receiving this motion at the pivot 12, is controlled and guided in the lines shown on one side of said V pivot by the link D and on the other side by the link E, and the result is thatthe end of it provided with the projection f receives an elliptical oscillating motion in the line g, and said projection, acting in the slot of the crank F, gives said crank and its vertical. shaft the required oscillating motion. The extentof this movement may be varied at'will by Varying the length or changing the position of the fixed pivots ofthecontrolling-ln'iks,or either ofthem, or changing the position of the center of the crank F.

While I prefer to pivot the connecting-rod B to the lever U at a point midway between the link-pivots, in order to get a parallel motion, the same result will he obtained in the oscillation of the crank-shaft from a'given ainountot reciprocation, it" the connection he made at any point on said lever O, or if moti'on be given through one of the controllinglinks. What I claim, and desire to secure by Letters Patent, is-

In a sewing-machine, the combination, with a rock-shaft having a slotted crank, ot' a lever provided with a projection adapted to enter and work in such slot, said lever being attached to a bed-plate by swinging links pivoted on opposite sides of it, and also connected to regularlyreciprocating mechanism, substan tially as described.

LEBBEUS BALDWIN MlLLER. \Vitnesses GEO. A. SQUIRE, WM. H. lNsLEE.