US43927A - Improvement in sewing-machines - Google Patents

Description

f 2 sheets-neet 1.. L. PLANER, 1

Sewing. Mahne.

No. 43,:927. Patented; Aug. 23, 1864.

NITED4 STATES Louis PLANER, OF NEW YORK, n. Y.

IMPROVEMENT IN SEWING-MACHINES.

Specification forming part of Letters Patent No. 413,927, dated August 23, 186'4.

yTo all whom it may concern;

Be it known that I, LOUrs PLANER, of the city, county, and State of New York, have invented 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 same, reference being had to the accompanying drawings,'forming part of this specification, in Which Figure l represents a side elevation of my improved sewing-machine, a part of the table being removed to exhibit more distinctly the working parts beneath-the same. Fig. 2 is a front elevation of the same. Fig. 3 is a vertical section, on an enlarged scale, of the crank and connecting-rod as combined for transferring motion to the shuttle and feed of the machine.

Similar letters of reference indicate corresponding parts in the several figures.

To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and operation with referenee to the drawings.

Arepresentsahorizontal drivin g-shaft,which is supported in two bearings, a c, in the upper part of the machine.

B is a second shaft, arranged in line with the shaft A, and supported in bearings b b.

C represents a rock-shaft arrangedv in the lower part or under side of the sewing-table, and having bearings o c attached to the lower part of the machine.

The driving-shaft A and second shaft, B, are

I both provided with disk-shaped collars D Dl at the parts where they approach each other. A stud or pin, d, fastened in one of the collars, D, and also fitting in the other collar, D', compels both shafts A and B to move or rotate together.

F represents a crank fastened upon the rockshaft C; and f is a erank-pin-secured in the extremity of the crank F, which extremity is slotted and aconnecting-rod, E, adjusted therein, so that the crank-pinfpasses through the connecting-rod E. The other end of this connecting-rod is fitted between the collars D D', upon the pin d, and thereby the rocking motion ofthe shaft C is transmitted from the shaft A. At the other end of this shaft G is fitted aerank, Gr, which is combined with the shuttledriver by a connecting-rod, g, and thus the shuttle is vibrated by the shaft C.

I represents a cam placed inside the bearings c c, upon the shaft C, and this 'cam acts on the lever t', on the rock-shaft M,which moves the feed-lever N, and thus the feed-wheel derives motion from the shaft O by means ofthe cam I.

The shaft B is also provided with a crank, o, and pin o in the front end of the'machine, where it approaches the needle-slide. slide has a peculiarly-shaped slotted piece, O, fixed on it, and in the slot of O is tted a friction-roller, o", adjusted on the crank-pin o', so that the desired up-and-down motion of the needle and needle-slideis obtained by the crank o and pin o upon the shaft B. At the same time the rotating driving-shaft imparts a vibratory motion to the shuttle by means of the eonnecting'rod E and shaftG. The connecting-rod E is made with conical bearings, as shown in Fig. 3, and the erank-pinf is made with a conical portion to t the bearings in the Aconnecting-rod, one end of the pin f being made cylindrical and fitted in one part of the crank, so as to slide in it. The other end ofthe pin is made with a screw-thread fitting the other part ofthe crank, and long enough to allow a nut, f', to be applied, and thus whenever the connecting-rod E may have worn loose in its bearings upon the pin f this pin may be screwed in a little farther to adjust the bearing of the connecting-rod, and thereby all noise and irregularity in the Operation of the said rod is avoided.

In ordinary sewingvmachines the motion of thevarious working parts is produced by means of cams, which necessarily create much friction and causethe machines to work hard. In some machines cranks have been used similar to those above described; but the use of ordinary cranks is objectionable, because they soon wear out and cause a dead-motion, which is detrimental to the correct operation of the machine, and causes much noise if the machines are run at a high speed.

By my invention the advantages of the cam motion and of the crank motion are combined. I retain the cranks in order to reduce the fric tion, and in order to avoid the dead-motion I have arranged the cranks so that they can be readily adjusted whenever it is desirable. For these reasons I am enabled to work my machine with great velocity without noise and with comparativelyl little power.

This A What I claim as my invention, and desire to constructed and operating in the manner and secure by Letters Patent, is

The arrangement of the driving-shaft A the second shaft, B, the crank-pin o', the pecnliar- LOUIS PLANER' lx1-shaped slotted piece O upon the needle-slide, Witnesses for the purpose herein shown and described. l

the collars D D', the connecting-rod E, in com- RICHARD NANMANN,4 l-ination with the adjustable crank-pin f, crank l FRANCIS GATTERDAM, F, shaft C, connecting-rod g, and crank G, all R, BAEKLEN.

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