US2007894A - Thread-case rotation-restraining means - Google Patents

Description

July 9, 1935. H. J.'GoosMAN 2,007,894

l THREAD CASE ROTATION RESTRAINING MEANS Filed May l2, 1934 Herlze d.' Goosmmm )MCM a,

Patented July 9, 1935 97,894

ST 'ht THREAD-CASE RTATION-RESTRAENNG MEANS Herbert Goosman, Elisabeth, N. J., assigner to The Singer Manufacturing Company, Elizabeth, N. rl., a corporation of New `lersey Application May l2, 1934, Serial No. 725,29l

Claims. (Cl. ll2-l8l) rThis invention relates to sewing machines and and 2li' and the bends are spaced from and subrnore particularly to sewing machines of the lockstantially parallel tothe walls 29 and 2l. The stitch type and for its objective the provision other limbs, which are free, extend along the of sound and vibration absorbing elements which other edge of the bar and terminate in portions 5 will absorb the impact of the thread-case rotation 22 and 23', respectively, which extend into aperrestraining iinger during the operation of the tures 2li and 25 of larger diameter than the stitch-forming mechanism, width of the springs 22 and 23.

With the above and other objects in View, as The cushion springs 22 and 23 are spaced from will hereinafter appear, the invention comprises each other to provide an opening for the ringer l() the devices, combinations, and arrangements of i9 on the thread-case, the space between the 10 parts hereinafter set forth and illustrated Yin the springs being slightly greater than the width accompanying drawing of a preferred embodiof the finger i9. As is well known in sewing ment of the invention, from which the several machines of this type, the loop of needle-thread features of the invention and the advantages atis seized by the loop-taker beak, which moves tained thereby will be readily understood by those in the direction of the arrow in Figure l, and l5 skilled in the art. casts it around the thread-case i5 and, as the The several features of the present invention needle-thread loop is drawn up by the take-up, will be clearly understood from the following dethe thread must pass between the spring 22 and scription and accompanying drawing in whichfinger it. 'it will be understood that the friction Figure l is an end elevation representing the between the thread-case and loop-taker causes the 20 stitch-forming mechanism of a sewing machine iinger iii te press against the spring 22, and when with my improved thread-case rotation-restrainthe machine is operated the passage of the thread ing elements embodied therein. between the spring and linger occurs very quick- Figure 2 is a bottom plan view of the throatly and with a snap-like action with the result ljlill Fiifr Figure 3 is a fragmentary sectional view taken against the bend of the spring 23 which absorbs substantially along the line 3-3 of Figure l, the the impact and reduces the noise. The friction loop-taker and thread-case being shown in elebetween the thread-case and loop-taker then vation. causes the thread-case to move in the direction 3D Figure Il is a section of the throat-plate taken of movement of the thread-case as indicated by 30 along the line ll--fl of Figure 2. the arrow in Figure 1 and this movement of the The present invention is shown embodied in a thread-case throws the finger iii against the bend sewing machine such as that disclosed in my coof the spring 22 which deadens this blow. Also, pending application, Serial No. 719,996, led due to the fact that the lead of the lower thread April 11, 1934. This machine comprises the usual T is at one side of a vertical plane passing through 35 bed i9, reciprocatory needle ll, presser-bar l2 the center of the thread-case when the stitch and presser-foot i2. Mounted for rotary moveis set, the lower thread T, which is under tenment on the bed lll is a loop-taker I4 having sion at this time, moves the thread-case in a journaled therein a thread-case l5 formed with counter-clockwise direction, as viewed in Figure 1,

a rotation-restraining linger i6. The loop-taker thereby causing the linger i6 to strike the spring 40 Vand thread-case are shown and described in de- 23 which absorbs the blow.

tail in my copending application, Serial No. It will be obvious from the above description 692,934, filed October 19, 1933. that the springs 22 and 23 Will absorb the blow Fixed to and carried by the bed ofthe machine of the thread-case rotation-restraining finger as is a throat-plate il formed with the usual needleit vibrates back and forthin the space between 45 aperture H and feed-dog slots i3 and having a the springs thereby reducing noise and vibration. rotation-restraining bar i9 iixed by the screws i9 Having thus set forth the nature of the into the lower face thereof. The throat-plate and vention, what I claim herein is:- rotation-restraining bar, for the purpose of this l. A sewing machine having in combination,

improvement, are parts of the sewing machine stitch-forming mechanism including a reciproca- 50 bed. The bar i8 is provided with a groove defined tory needle, a circularly moving loop-taker coopby the walls 29 and 2l and fixed to the bar are erating with said needle, a thread-case carried by two U-shaped cushioning fiat- springs 22 and 23. said loop-taker and having a rotation-restraining The springs 22 and 23 each have one of their limbs linger, a throat-plate, a bar located beneath said 5 5 iixed to one edge of the bar i8 by the screws 2li throat-plate, said bar having a groove which re- 55 5 plate. that the finger i6, in some instances, is thrown 25 oeives the finger on said thread-case, and means carried by said bar and disposed on opposite sides of said finger for cushioning the latter.

2. A sewing machine having in combination, stitch-forming mechanism including a reciprocatoly needle, a circularly moving loop-taker cooperating with said needle, a thread-case carried by said loop-taker and having a rotation-restraining finger, a throat-plate, a bar iiXed to the under side of said throat-plate and a at spring xed to said bar and spaced from one of the Walls of said groove for absorbing the impact of said finger.

3. A sewing machine having in combination, stitch-forming mechanism including a reciproca- -tory needle, a circularly moving loop-taker cooperating with said needle, a lthread-case carried by said loop-taker and having a rotation-restraining finger, a throat-plate, and cushion springs secured to said throat-plate and provided with nger-engaging portions spaced apart to form a resilient pocket for said rotation-restraining nger.

4. A sewing machine having in combination,

stitch-forming mechanism including a, reciprocatory needle, a circulariy moving loop-taker cooperating with said needle, a thread-case journaled in said loop-taker and having a rotationrestraining finger, a throat-plate, a bar carried by said throat-plate and formed with a groove, and cushion springs secured to said bar on opposite sides of said groove, said cushion springs being spaced apart to form a resilient pocket for the rotation-restraining nger on said thread-case.

5. A sewing machine having in combination, stitch-forming mechanism including a reciprocatory needle, a circularly moving loop-taker cooperating with said needle, a thread-case carried by said loop-taker and having a rotation-restraining nger, a throat-plate, and a pair of spring members carried on the lower face of said throatplate, said springs being spaced from each other to provide a resilient pocket for the finger of said thread-case.

HERBERT J. GOOSMAN.

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