US1119272A - Sewing-machine. - Google Patents

Description

C. T. E. GOULD.

SEWING MACHINE. APPLICATION FILED 1111117.31, 191s. RENEWBD APR. 17, 1914.

1,119,272. Patented Dec. 1, 1914.

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Cl T. E. GOULD. SEWING MACHINE.

APPLIoATIoN FILED 11.31, 1913. nmrnwBD un. 1v, 1914. 1,1 1 9,272.

UNITED STATES PATENT oEEIoE.

CHARLES T. E. GOULD, OF

CHICAGO, ILLINOIS, ASSIGNOR OF ONE-THIRD T0 EDWARD HILKEB, OF CHICAGO, ILLINOIS.

SEWING-MACHINE.

' Specication of Letters Patent.

Patented Dec. 1, 1914.

Application led March 31, 1918, Serial No. 757,795. Renewed April 17, 1914. Serial No. 832,630.

To all whom it may concern:

Be it known that I, CHARLES T. E. GoULD, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Sewing-Machines, of which the following is a specification.

This invention relates to improvements in sewing machines of the rotary type, such as is disclosed in my application, Serial No. 714,216, filed August 9th, 1912, and it consists in certain peculiarities of the construction, novel arrangement and o eration of the various parts thereof, as wil be hereinafter more fully set forth and specifically claimed.

The principal object of the invention is to provide improved, simple and efficient means for operating the feeding device of the machine and to improve the method of changing the feed or regulating the stitches.

In the accompanying drawings, which serve to illustrate the invention- Figure 1 is a plan view, partly in section, of a sewing machine embodying the invention; Fig. 2 is a longitudinal section taken on line 2-2 of Fig. 1, showin parts in elevation. Fig. 3 is a fragmenta plan view of like parts shown in Fig. 1, with some of said parts broken away; Fig. 4 is a cross sectional view taken on line 4-4 of Fig. 2, looking in the direction indicated by the arrows; and Fig. 5 is a cross sectional view of a portion of the bed plate and hollow casing taken at a different point from that shown in Fig. 4, but looking in the same direction.

Corresponding reference numerals refer to like parts throughout the different views of the drawings.

The numeral 1, designates the bed-plate, which is preferably made integral with the well 2, and a trough-like casing 3, which extends horizontally from the said well, but communicates therewith as shown in Fig. 2, of the drawings. Mounted on the bed-plate 1, is a casting 4, which supports the drivingwheel and needle operating mechanism (not shown) and which form no part of the present invention. However, the machine is operated by a belt applied to said wheel, and driven in the ordinary or any preferred manner. As shown in Fig. 1, a connectingrod 6, within the casting 4, is employed to transmit power from the shaft (not shown) of the said wheel, to a crank 7, attached to the. inner or right-hand end of a shaft 8, whlch extends through the casing. At the outer or left hand end of the casing 3, is a rotary hook 9, carried and driven by the shaft 8, and said hook receives and carries a bobbin-case 10, of a well-Jknown type. At the left or outer surface of the hook 9, is located my improved bobbin-case holder 11, the construction and operation of which is lset forth in my application for patent for improvements in sewing machines, executed and filed of even date herewith.

As shown in Fig. 2, the casing 3, has a transverse vertical wall 12, near its left hand or outer end in which the shaft 8, is journaled near its outer end. A throatplate 13, is horizontally secured on the upper surface of the wall 12, and is provided with'a number of slots 14, for the reception and operation of the serrated members 15, which project upwardly from the plate 16, which is provided with an arm 17, which lits into a notch or shelf on the irregular piece or casting 18, which piece, as well as the members 15, are given a horizontal reclprocating motion and at the same time a vertical play by mechanism presently to be described. The horizontal movement of the feeding members 15, is produced by a lever arm 19, which has two projecting` jaws 20, at its left hand or outer end, which embrace a block 21, which is attached to lugs 22, projecting from the member 18, by a pivot 23. The arm 19, is pivoted at 24. to a supporting member 25, carried by the casing 3, of the machine. Intermediate its ends the arm 19, carries a pivot 26, to which is connected a second lever arm 27, shown in side view in Fig 2 of the drawings.

As before stated the shaft 8, has a bearing at 28, in the wall 12, of the casing. At the inner side of this bearing the shaft 8, carries a cam 29, while the arm 27, is provided at its outer end with a roller 30, which bears upon the outer surface of said cam. As the shaft 8, revolves, the arm 27, is vibrated. Said arm is provided with a lug 31, which is bent upwardly at its outer end so as to engage the face of a wedge-shaped member 32, carried at the end of a rod 33. The lever arm 19, is provided with a lug 34, extending from its lower surface and shown in Fig. 3. A spring 35 abuts against the inner face of the case 3, and serves to push the arm 19, and consequently the lug 34, in the, direction of the upturned end of the lug 31. The rod 33, is pivoted at 36, consequently when the vibration of the small lever 27, moves the wedge-member 32 into contact with the lug 34, the lever arm 19 is moved in a direction to compress the spring 35, and when the position of the cam 29, permits, the spring 35 pushes the lever 19, and consequently the parts 32 and 27 back to their original positions, causing a vibration of the arm 19, and a reciprocation of the feeding device pivoted thereto. The reciprocating motion of the feeding device is guided by the flanges 37, on the member 18, which engages the outer face of the wall 12. This wall has an aperture 38, through which the bar 19 extends, and which accommodates the projecting lugs of the member 18, to which the arm or lever 19 is pivoted.

The vertical movement of the feeding members 15, is caused by cam 39, carried on the shaft 8, on the outside of the wall 12, there being a bearing block 40 fastened to the underface of the member 18, and engaging-the cam 39. A second bearing block 41 lies between the inner face of the cam 39, and the lower flange 37, on the member 18, to guide the reciprocating movement of the feeding device.

In order to regulate the amount of 'the feed and the length of the stitches, the position of the pivot point 36, is made adjustable, being carried on an arm 42, which may be fastened in any desired position by the nut 43, which is adjustable in the slot 44 of the casting 4, on the upper surface of the bed-plate. Adjustment of the nut 43, longitudinally of the slot moves the pivot point 36, and consequently moves the wedgeshaped member 32, back and forth between the lug 34, and the end of the lug 31, the length of the throw of the arm 19, being determined by the width of the wedge member at the point between the two lugs 34 and 31.

As shown in Fig. 2, the lever arm 19, is inclined downwardly from its point of support, and the spring 35 also inclines downwardly to its point of contact with said lever arm.

Having thus fully described my invention, what I claim as new and desire to obtain by Letters Patent isM 1. In a sewing machine in combination, a

revoluble shaft, a cam on said shaft, a vibrating lever arm, a second vibrating lever arm pivoted 'to the rst named arm and driven by said cam, lugs on saidarms, an adjustable wedge member lying intermediate said lugs whereby the movement of said second mentioned arm moves said first mentioned arm in one direction, and a spring for moving said first mentioned arm in the other direction.

2. In a sewing machine the combination with a bed-plate, of a rotary shaft extended longitudinally beneath the same, a vibrating arm pivoted at one of its ends beneath the bed-plate and projected at its other end to near one end of said plate, a feeding device having loose connection with the free end of said arm, a second vibrating arm pivoted to the first named arm and having at one of its ends a roller, a cam on the shaft to contact with said roller, another cam on said shaft to impart vertical movement to the feeding device, a lug on each of said arms, an adjustable wedge member lying between said lugs whereby the movement of said second mentioned arm moves the first mentioned arm in one direction, and a spring for movin the first mentioned arm in the opposite direction.

3. In a sewing machine, the combination with a bed-plate having on its lower surface a casing inclosing parts of the lower operating mechanism of the machine, said casing having at its outer portion a transverse vertical wall provided with an opening in its upper portion, a rotary shaft journaled in said wall and extended in said casing, a vibrating lever arm pivoted in said casing and projected into the opening of the wall, a feeding device having loose connection with the projected end of said arm, a cam on the shaft, a second vibrating lever arm ivoted to the first named arm and driven y said cam, a lug on each of said arms, an adjustable wedge member lying intermediate said vlugs whereby the movement of said second mentioned arm moved the first mentioned arm 1n one dlrectlon, and a sp'rmg for moving the first named arm 1n the opposite d1- rection.

CHARLES T. E. GOULD. Witnesses:

CHAs. C. TILLMAN, A. S. PHILLIPS.

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