US1299625A - Sewing-machine. - Google Patents

Description

D. S. SEYMOUR.

SEWING MACHINE.

APPLICATIOM FILED 0319,1914.

Patented Apr: 8, 1919.

4 SHEETS-SHEET 1.

Q 7 awwwnio'u D. S. SEYMOUR.

SEWING MACHINE. APPLICATIQN men DEc.29,19x4.

1,299,625. 1 Patented Apr. 8,1919;

4 SHEETSSHEET 2.

4 SHECTSSHEET 3- lwumtoz iii D, S. SEYMOUR.

SEWiNG MACHlNE.

APPLiCATION FILED DEc.29. I914.

4 SHF' EU 4.

Patented Apr. 8, 1919.

tionsh-own in Fig. 3. When these parts are in line, the looper is at the forward end of its stroke, and is given a dwell. This particular looper-operating mechanism forms no part of my present invention.

Also mounted on the main shaft 12 is a second eccentric, with which cooperates an eccentric strap carrying a link 17. The link 17 at its lower end is connected to anarm l8 fixed to a cross shaft '19. The cross shaft 19 carries a second arm 20. The looper shaft is moved endwise for giving the looper its-needle avoiding movement through a connection with this arm 20. Mounted freely on the'looper shaft 10 between spaced collars 23 and 23 which are fixed to the shaft, 15 a sleeve 23. This sleeve 23 has a dependlng arm or bracket 22. A link 21 is pivotally connected at one end to this arm or bracket 22, and at its other end to the arm 20. On the Work supporting arm 3 is a fin 3 which engages the groove in the arm or bracket 22. This prevents the arm or bracket 22 from oscillating with the shaft 10 and at the same time permits the sleeve to be moved endwise through the link 21 as the arm 20 vibrates.

The material being sewed is fed up. the arm by a feed dog 24, mounted on a feed bar 25. The feed bar 25 at its rear end is slotted to engage a pin 26. The rear end of the feed dog moves back and forth .on this pin, and such pin may oscillate to permit the front end of the feed bar tobe raised and lowered.

Mounted on the looper shaft 10 is an eccentric, which engages a bracket 27 carrying the feed bar 25. As the looper support oscillates, this eccentric Will raise and lower the feed bar, which in turn will raise and lower the feed dog. The cross shaft 19 carries a third arm link 29 connected to said slotted arm at one 7 end is also connected at its other end to the is attached a link 31. Mounted in suitable bearings 31 in the overhanging arm, is a shaft 32. This shaft 32 carries an arm 33, to which the upper end of the link 31 is pivotally connected. The arm 33, as clearly shown in Fig. 2 of the drawings, is carried by a collar 34 fixed to the shaft 32. A counterbalancing weight 35 is fixed to the forward end of the shaft by a set screw 36. This counterbalancing weight 35 is located substantially opposite the arm 33, and is connected to the needle bar 6, so that the weight 35 counterbalances the weight of the arm 33, the link 31, the needle bar and the parts carried thereby.

The shaft 32 extends through the bearing 31 at the rear end of the machine and carries an arm 37, clamped to the shaft by 28, which is slotted, and a suitable screws 38. The main shaft 12 is provided with a crank 39 carrying a ball 40. The crank 39 is between the eccentrics on the shaft 12. A link 41 cooperates with-this ball 40 at one end, and at'its upper end is connected to a ball stud 42 on the outer end of the arm 37. As the main shaft 12 rotates, this crank 39 will through the link 41 oscillate the arm 37 and in turn oscillate the shaft 32, which reciprocates the needle bar 6.

Inasmuch as the main shaft extends at right, angles to the shaft 32, the link 41 must have a universal connection with the crank 39, and this is accomplished by the ball 40 above described. This connection between the link 41 and the crank would permit the link, however, to wabble on its connections as the shaft rotates. In-order to prevent this Wabbling of the link, and thus prevent unnecessary noise, I have provided said link adjacent its upper end with an outwardly projecting arm This arm 43 carries a ball stud at its outer end, with which is connected a link 44. The link 44 at its inner end is freely journalcd on a ballstu'd 45 carried at the end of the shaft 32 and concentric with the axis of the shaft. This link 44 moves up and-down .With the oscillations of the shaft 32, and of'the' serves solely to prevent the wabbling link 41 on its connections. The main shaft 12 is driven by a suitable belt wheel 46, havingthe hand wheel 47 attached thereto.

n this type of machine, the operator in feeding the material sits at the end of the work supporting arm. The hand wheel 47 is readily accessible to theoperator, so the main shaft 12 may be turned by hand to position the needle for the placing of the material in the machine, for the material from the machine or for threading the needles. The material is held on the work-supporting arm by a presser foot 58, carried by a presser bar 49. The presser bar may be raised by a hand lever 50, connected to a link 51. The link 51 is connected eccentrically relative to the pivot of the hand lever 50, and has a slotted connection with the bracket 52 at the upper end of the presser bar 49. This pressure bar may also be raised by a treadle, if desired.

From the above description it will be apparent that I have provided a sewing machine wherein the material may be fed lengthwise of a supporting arm, and wherein the needle bar is oscillated from aqpositively oscillated shaft extending lengthwise of the overhanging arm, and this shaft in turn, is positively actuated by a cross shaft which is journaled in the standard and, extends at right angles to said needle shaft, and also at right angles to the work-supporting arm, which positions the hand wheel it maybe readily accesthe removing of feed dogs from vided means for, positively reciprocating the this main shaft, positively actuating the looper from said shaft.

It is obvious that minor changes in the construction and arrangement of the parts may be made, without departing from the spirit of my invention as set forth in the ap ended claims.

aving thus described my invention, what Iclaim as new and desire to secure by Letters Patent, is

1. A sewing machine including in combination a standard, a work support, an overhanging arm, a main shaft in said standard extending at right angles to the longitudinal axis of said-arm, a shaft in said overhanging arm, a link operated by the main shaft and connected to the shaft in the overhanging arm for oscillating the same, an arm projecting laterally from said link at the upper end thereof, a second link connected to said arm at one end and at the other end to a ball stud mounted on the shaft in the overhanging arm and concentric with the axis thereof, a needle bar, a needle carried thereby, and devices for reciprocating the needle bar from said'shaft in the overhanging arm.

2. A sewing machine including in combination, a standard, a work-supporting arm projecting from said standard, an overhanging arm, a, main shaft in said standard extending at right angles to the longitudinal axis of said work-supporting arm, a fee dog for feeding the material lengthwise of said work-supporting arm, means for actuating said feed dog from said main shaft, a shaft in said overhanging arm, a needle bar, needles carried thereby, means for reciprocating said needle bar from said shaft, an arm projecting from said shaft, a crank arm formed in said main shaft, a link operated by said crank arm and attached to the arm on the shaft in the overhanging arm for oscillating the same, said link havin a universal connection with the crank in t e main shaft and also with the arm on the oscillating shaft, an arm projecting laterally from said link at the upper end thereof, a link connected to said arm at one end and at the other end to a ball stud mounted on the shaft in the overhanging arm and concentric with the axis thereof.

3. A sewing machine including in combination, a standard, a work-supportin arm projecting from said standard, an over anging arm, a main shaft in said standard extendingat right angles to the longitudinal axis of said Work-supporting arm, a fee dog for feeding the material lengthwise of said work-supporting arm, and also for means for actuating said feed dog from said main shaft, a shaft mounted in said overhanging arm, an {II'IXI mounted adjacent of said shaft and projecting laterally therefrom, a needle bar, needles carried thereby,

the arm on the shaft a link for connecting a weight mounted on with the needle bar, the forward end of site end of its axis from said arm, a second arm at the rear end of said shaft, a link connected to said second arm, an eccentrically .disposed member carried by said main shaft the forward end said shaft at the oppowith which said link cooperates for oscillating the shaft in the overhanging arm, an arm projectin laterally fromsaid link at the upper en thereof, and a second link connected to said arm at one end and to a ball stud mounted on the shaft in the overhanging arm at its other end.

4. A sewing machine including in combination, a standard, a work support, an overhanging arm, a main shaft in the standard extending at right angles to tudinal axis of said arm, a shaft in Sal overhangin arm extending longitudinally thereof, means for actuating said shaft from ls)aid cross shaft in the standard, a needle ar, from the said shaft in the overhangin arm, a needle carried by the said needle ar, a looper shaft in said work support, a looper operated thereby, and means located in the standard for oscillating the looper shaft an for moving the same endwise.

5. A sewing machine including in combination. a standard, a work supporting in said standard extending at right angles 1 5 to the axis of said overhanging centric on said main shaft, devices arm, an ecbetween the longimeans for reciprocating said needle bar das' arm carried by said standard, an overhang;

said eccentric and said looper supporting' shaft for oscillating the same, a secon centric on sai said second eccentric and said looper supporting shaft for moving the same endwise,

a crank located between said eccentrics, and

means actuated by said crank for oscill t '1 5 the shaft in the overhanging arm.

ecmain shaft, devices betwen lm In testimony whereof I afiix my signature in'the presence of two witnesses.

DUDLEY S. SEYMOUR.

Witnesses:

H. C. EDWARDS, S. GEORGE TATE.

Images