US1224311A - Sewing-machine. - Google Patents

Description

G, E. MOLYNEUX.

SEWING MACHINE.

APPLICATION FILED JULY 19. 19x5.

1,224,331 1 Patented May 1, 1917.

2 SHEETS-SHEET W/T/VESSES. IWVE/VTOR fl Q M W TOR/VEY G. E. MOLYNEUX.

SEWING MACHINE.

APPLICATLON FILED JULY 19. 1915.

1,224,31 l a Patented May 1, 1917.

2 SHEETSSHEET 2- ATTORNEY TAE AT GEORGE E. MOLYNEUX, 0F BAYONNE, NEW JERSEY, ASSI'GNOR TO THE SINGER MANU- FACTURING COMPANY, A CORPORATION OF NEW JERSEY.

SEWING-MACHINE.

Specification of Letters Patent.

Patented May 1, 1917.

To all whom it may concern:

Be it known that I, GEORGE E. MOLYNEUX, a citizen of the United States, residing at Bayonne, in the county of lfudson and State of New Jersey, have invented certain new and useful Improvements in Sewing-Machines, of which the following is a specification, reference being bad therein to the accompanying drawings.

This invention relates to improvements in sewing machines and it has for its object to provide means for laying a thread, or threads, across the line of seam in front of the needle or needles, the needle-threads securely binding the cross threads and form ing a seam useful either for ornamenting fabrics, or for uniting two edges of fabrics.

In the form of the improvement hereinafter described in detail, two thread-carrying arms are carried by two disks mounted upon the presser-bar of a sewing machine to oscillate in opposite directions. Each disk carries a pivoted block fitted within the guideway of a sliding actuator which has a link connection with a rock-arm actuated from the driving shaft of the sewing machine, the actuator having overhanging flanges which rest upon and slide relatively to a supporting block fixed upon the presserbar. forth the walls of its guideway engage the pivotally mounted blocks on the disks, and the latter are oscillated to move the threadarms toward and from each other to lay the threads across the line of seam.

In the drawings, Figure l is a side elevation, partly in section, of a sewing machine provided with my improvements, and Fig. 2 is a front elevation of the same. Figs. 3, 4 and 5 are detail perspective views of certain parts of my improvements, and Fig. 6 is a perspective view of said parts assembled.

The improvements are shown applied to a machine comprising the base 1, standard 2, overhanging tubular arm 3 and tubular work supporting arm or horn 4. J ournaled within and cross-wise of the standard 2 is the main shaft 5 which is provided with the needle actuating crank 6 and suitable actuating eccentrics for the loop-taking and feeding members.

The needle-bar 7 carries, in the present instance, four needles and derives its operative movements from the crank 6 through When the actuator is moved back and the pitman 8 crank-arm 9 on the rock-shaft 10 and crank-arm 11 on said rock-shaft connected with a needle-bar by means of a link 12 in a manner well known.

The presser-bar 14 is journaled within suitable bearing apertures formed in the head A, and has clamped thereon the split collar 13 carrying the laterally extending arm 14 the upper face of which is engaged by one end of a spring 15 held at its opposite end by a lug 16 projecting from the standard, the spring being engaged midway its ends by the adjusting screw 17, for regulating its pressure upon the bar. Pivotally supported upon the head A is the usual presser lifting-lever 18 having a cam-face 19 adapted to engage the arm 14. Upon the lower end of the presser-bar is secured the shank 20 of the presser-foot 21. I

Clamped upon the presser-bar by means of a screw 22 is a collar 23 upon which rests the oscillatory disk 24 formed with the sleeve 24 embracing the presser-bar. Formed integral with the disk 24 is an arm 25 provided with an aperture 26 to receive the thread-carrier 27 the latter being secured in adjusted position by means of the screw 28. Fitted upon the sleeve 24 of disk 24 is the collar 29 of a disk 30 having formed integral therewith an arm 81 apertured to receive the thread-carrier 32, the latter being. held in adjusted position by means of the set-screw 34. Pivotally supported upon the upper face of each oscillatory disk 24 and 30 is a block 35, and each block is fitted to slide within a guideway 36 of a sliding actuator 37 embracing the ,presser-bar and having a clearance slot 89 to permit its movement relatively to and laterally of said bar. To maintain the actuator in position throughout its movement, it is formed with the overhanging flanges 88 which embrace shoulders 39 0f a guide-block 40 clamped upon the presser-b'ar by means of the set-screw 41.

The actuator 37 is formed with a projecting lug 42 to which is connected by means of link 43 the lower end of a rock-arm 44 fitted at its opposite end upon a rock-shaft 45 supported at its front end by a bearing aperture formed in the block 46 on the head A of the overhanging arm 3, the rearward end of the rock-shaft projecting within the standard 2, andcarrying the crankstud 47 embraced by a strap 48 carried at the upper end of pitman 49 provided at its lower end with a strap 50 embracing an eccentric 51 on the actuating shaft 8 driven from the main-shaft 5 through gears 52 53.

It will be seen that the rock-shaft 45, through its connections with the main-shaft 5 will actuate arm 44, and, through link -fi3, will reciprocate the sliding actuator 37, thereby oscillating the disks 2% and 30 to lay the threads 25 and 6 across the path of the needles, so that the said threads will connect the outer rows of stitches. I have shown herein two thread carrying arms, but it will be understood that the invention is not limited to any number of thread carrying arms; and it will also be understood that one needle, or a plurality of needles may be employed in connection with a single thread-carrier or a plurality of thread-carriers, as desired. It will further be understood that the thread laying mechanism heretofore described may be supported by means other than the presser-bar, the latter however being a desirable supporting member for the said mechanism.

Having thus set forth the nature of the invention, what I claim herein is 1. In a sewing machine, the combination with stitclrforming mechanism, of a rockshaft, a cylindrical supporting bar and a thread-carrier journaled thereon for oscillatory movement, an actuator surrounding and slidingly mounted upon said supporting bar and operatively connected with the thread-carrier, and connections between the rock-shaft and said actuator for imparting operative movements to the latter.

2. In a sewing machine, the combination with stitch-forming mechanism including a needle or needles, of means for laying a thread in front of the needle or needles comprising a cylindrical supporting bar, a thread-carrier journaled upon said bar for oscillatory movement, a slidably mounted reciprocatory actuator carried by said bar,

a sliding connection between the actuator and the said thread-carrier, and means for imparting operative movements to the said actuator.

3. In a sewing machine, the combination with stitch-forming mechanism including a needle or needles, of means for laying a thread or threads in front of the needle or needles, comprising a supporting bar, a disk mounted to oscillate upon said bar, a threadcarrier movable with the said dish, a reciprocatory actuator mounted upon the supporting bar and formed with a guideway, a stud carried by the disk and fitted within the said guideway, and means for reciprocating the actuator to impart oscillatory movements to the disk and operative movements to the thread-carrier.

4. In a sewing machine the combination with stitch-forming mechanism including aneedle or needles, means for laying a thread in front of the needle or needles, comprising a supporting bar, a disk mounted to oscillate upon the said bar, a thread-carrier mounted upon said disk, a reciprocatory actuator mounted upon said supporting-bar and provided with a guide-Way, a stud carried by the disk and fitted within the said guide-way of the actuator, a second disk movable upon the first disk and provided with a block fit ted within the said guide-way, and a threadcarrier mounted upon the second disk.

5. In a sewing machine, the combination with stitch-forming mechanism and a plurality of thread-carriers, of a supportingbar, superposed disks mounted to oscillate upon said bar, and each supporting a threadcarrier, an actuator mounted to reciprocate upon said bar and having a sliding connection with each of the said disks, and means for reciprocating said actuator.

In testimony whereof I have signed my name to this specification.

GEORGE E. MOLYNEUX.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

Images