US399990A - Sewing-machine - Google Patents

Description

(No Model.) V 2 Sheets-Shet 1.

J. A. HOUSE 86 G. H. DIMOND.

SEWING MACHINE. No. 399,990. Patented Mar. 19, 1889.

(No Model.) 2 Sheets-Sheet 2.

J. A. HOUSE & O. H. DIMOND.

SEWING MACHINE.

Patented Mar. 19, 1889.

UNITE STATES arnnr FFICE.

JAMES ALFORD HOUSE AND CHARLES H. DIMOND, OF BRIDGEPORT, CONNECTICUT.

SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 399,990, dated March 19, 1889.

Application filed June 5,1886.

To all whom it mag concern.-

Be it known that We, JAMES ALFORD H ()USE and CHARLES H. DIMOND, citizens of the United States, residing at Bridgeport, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Sewing-Machines for Flossing; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable othersv skilled in the art to which it appertains to make and use the same.

Our invention relates to certain new and useful improvements in sewing-machines for flossing, and has for its objects, first, to provide a simple and efficient stop mechanism, whereby the machine may be instantly and certainly thrown into or out of action, and, second, to provide a device attached to the needle actuating mechanism, whereby the presser-foot may at a predetermined portion of each revolution be lifted from and held clear of the goods; and with these ends in view our improvementconsists in the details of construction and combination of elements, hereinafter fully explained, and then recited in the claims which are hereunto annexed.

In order that such as are skilled in the art to which our invention appertains may fully understand how to make and use our improvement, we will now describe the same, referring by letter to the acconnoanying drawings, which form a part of this specification, and in which- Figure 1 is a front elevation of our ma chine; Fig. 2, an end' view of the head; Fig.-

Serial No. 204,213. (No model.)

the main shaft for the driving of the machine, and H is a shoulder upon the pulley.

I is a stop-lever pivoted to a bracket or extension on the bedplate. Its forward extremity is adapted to engage the shoulder H, and is normally held against the periphery of the pulley by the spring J. (Shown at Fig. 3.) A rod, K, is pivoted to the stop-lever, and its lower end is connected to a suitable treadle, L, for operation by the foot to disengage the lever from the shoulder on the pulley.

M is the needle-bar held in guides in the end of the arm, and N is the presser-bar similarly held and behind the needle-bar. A

presser-foot, O, is carried upon the lower extremity of the presser-bar.

P is a curved upward extension of the presser-bar and overhangs into the vertical plane of the needle-bar. At each upward movement the needle-bar is designed to engage the curved extension just referred to, and thereby raise the presser-foot from the goods. If desired, the extent of lift may be made adjustable by a set-screw passed vertically through the extension and receiving the impact of the needle-bar.

In Fig. -.t we have shown a modified form of extension, lettered Q, and in this construction it is operated by a collar, R, secured upon the needle-bar.

In addition to the parts above described the machineis equipped with a suitable stitchforming mechanism, take-up, 850.; but as these maybe of any ordinary construction and form 110 part of our invention we have not placed in proper position beneath the needle, and the stop-lever (through the rod and treadle) is thrown out of engagement with the shoulder. The belt then carries the pulley, the presser-foot descends upon the surface of the cloth, the needle, take-up, and stitch-forming devices perform their proper functions, and a stitch is taken in the fabric. The upward movement of the needle-bar after the completion of the stitch engages with the extension of the presser-bar and raises the latter and its foot from the goods. Since there is no feeding device upon the machine, if the stop-lever be held out of engagement with the shoulder a number of stitches will be made one on top of the other. It is designed however, to release the pressure upon the treadle immediately the lever is thrown out of engagement with the shoulder, when after the machine starts the spring will return the lever to engagement with the pulley, and at the completion of the revolution and the stitch consequent thereto the lever abuts against the shoulder, the machine stops with the presserfoot raised, and the belt slips upon the pulley, as before. The goods may now be moved under the needle to the point where the next stitch is to be taken. In this way any desired figure, composed of any number and length of stitches, may be worked upon the fabric by the proper manipulation and moving about of the goods. Furthermore, in the presser-foot-operating device the extension of the presser-bar might be engaged by the neea dle-lever; and we do not desire to be limited to its actuation from the bar itself.

Having thus described our invention, what We claim as new, and desire to secure by Letters Patent, is-

1. In a sewing-machine for flossin g, the driving-wheel having a stop-shoulder projecting therefrom, in combination with a pawl pivoted to the bed of the sewing-machine, a spring adapted to throw the extremity of said pawl behind said shoulder, whereby the movement of said wheel may be arrested at a predeterminedtime, and meansas a treadle-androd connection-for disengaging said pawl from said shoulder, substantially as shown and set forth.

2. The combination, with the main drivin shaft, needle-lever, and needle-bar, of the

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