US1292064A - Rotary take-up for sewing-machines. - Google Patents

Description

C. RINGE. UP ron SEWING MACHJNES.

ROTARY TAKE- APPLICATION FILED name. was. Patented Jan. 21,1919.

- 2 SHEETS-SHEET J.-

WITNESSES:

rronusy y 1. cpnmfi; ROTARY TAKE-UP FOR SEWING, MACHINES.

1,292,064; mm Jan. 21,1919. v 2 SHEETS-SREET 2;

APPLICATION FILED FEB. 9.1916.

WITNESSES: A C v @woljw I v nrromvey TED STATES PATENT oFFIoE.

JOHN GrRING-E, OF BRIDGEPORT, CONNECTICUT, ASSIGNOR TO THE SINGER MANUFAC- COMPANY, A. CORPORATION OF NEW JERSEY.

mum 'rAKn-ur ron snwnve-macnmns.

To all whom it ma concern.-

Be it known t at 1, JOHN G. RINGE, a

citizen of the United States, residing at' Bridgeport, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Rotary Take-Ups for Sewing-Machines, of which the following is a specification, reference being had therein to the accompanying drawings.

t This invention relates to an improvement in rotary take-ups, and it has for 1ts ob ect to provide for the effective handling of an abnormally long length of needle thread in conjunction with a rotary lock-stitch looptaker performing two rotations for each reciprocation of the needle and each rotation 'of the take-up, as disclosed more fully in -my application Serial No. 77,123 filed simultaneously herewith. In its preferred form, the take-lip comprises the usual spaced rotary disks secured together by means of an intermediate spacing ug and having in one of said disks a marginal arcuate slot in semi-rotation.

which works a relatively movable threadengaging stud-pin carried by a vibratory lever which is fulcrumed upon said disk and is yoked to embrace a stationary controlling eccentric, whereby in the rotation of the takeup the stud-pin performs an accelerated movement in the thread-drawing semi-rotation of the take-up and a retarded movement tov initial position in the thread-slacking The invention will be understood by reference to the accompanying drawings, in which Figure 1 is a frontend elevation of a sewing machine embodying the present improvements, with the bed-plate in section. Fig. 2 is a 'sectional plan of the head of y the bracket-arm with the parts carried thereby, and Fig. 3 is a plan view of the take-up, partly 1n section. Figs. 4 and 5 are perspective views, respectively, of the take-up disks. Figs. 6 and 7 are front'end views of the take-up in different operative ositions in conjunction with the stitch-.v

orming elements, the loop taker beingrepresented conventionally. Fig. 8 represents in perspective the needle-actuating means with the controlling eccentric and its support detached. Fig. 9 represents in perspective the vibratory stud-pin ca ing lever and its accessorieacertain of wh ch are de- Speciflcation' of Letters latent. Patented J an, 21, 1.919, Application filed February 9, 1916. Serial No. 77,124.

in the present instanceis of unusually large capacity to adapt the machine for operation in an abnormally long stitching period without renewal of the lower thread supply.

Cooperating with the loop-taker 15 the eye-pointed needle 10' carried by the reciproeating needle-bar 11 which is journaled in V .the bearing sleeve or bushing 12 and has pivotally connected to its upper end by means of the screw 13 a boss at the lower end of the pitman 14: which is formed at its upper'end with a strap embracing'the crank-pin 15 upon the crank-disk 16 which is in turn mounted upon the main-shaft 17 journaled in the bracket-arm 3.

The crank-pin'15 rigidly sustains at it's forward end the crank-arm 18 which carries a boss 19 disposed concentrically with the main-shaft 17. Secured upon the forward face of the boss 19 by means of screws 20 tapped therein is the primary take-up disk 21 which carries at one side of the center the outwardly inclined elongated spacing lug 22 adjacent which is disposed the marginal arcuate slot 23 formed in the inner face of the disk with a surrounding countersunk recess 23.

Secured upon the lug 22 by means of screws 24 entering apertures 25 therein, is a second cutout disk or ring 26 formed with a central aperture 27 in its hub portion and upon its-rearward face with a.marginal arcuate countersink 28 in register with the countersink of the slot 23 of the primary take-up disk (Fig. 3)."

Secured within the outer recess of the bracket-arm head .is a transverse bridgepiece or support 29 which is formed with an apertured boss 30 to which is secured by means of screws 31 the controlling eccentric 32 formed with a clearance aperture 33 for a head for the same.

, needle-thread being the boss 19. Fitted upon the eccentric 5:;2 is

iav-

the suitably apertured slide-block 34: ing its parallel opposite faces fitted to the adjacent side walls of the yoke 35 formed intermediate the ends of a vibratory lever 36 which has tapped into one end the reduced and threaded portion of the take-up stud 37 having a shouldered part passing through the slot 23 and its operative part or head entering the registering countersinks 23 and 28 of the spaced take-up disks.

The lever 36 has formed in its opposite end an aperture 38 which is journaled upon the boss 39 of a screw-stud having its threaded shank 40 tapped into a suitable aperture of the: primary take-up disk and formed with an angular flange' ll affording The apertured end of the lever 36 is confined upon the stud 39 between the fiange .41 and the head-of a screw 42 tapped into a suitably threaded aperture of said stud.

The bracket-arm head has depending from the upper side of its cavity the oiling tube 43, which is well-known in this class of machines, the beveled lower end of this tube being in register with an oil grove 44E formed in the face of the'eccentric-sustaining boss 30. The eccentric 32 is formed in the face adjacent said boss with a lubricant cavity 45 which is entered by oil-distributing apertures 46 extending outwardly therefrom into the opposite ends of a peripheral oil-distributing groove 47 adapted to lead lubricant to the ournal of the slide-block 34.

The cavity 45 is preferably packed with wicking or other lubricant absorbing material. Through the tube 43' and duct 44 lubricant is readilyintroduced into the cavity t5 from which it is distributed upon the outer face of the stationary controlling eccentric by means of the aperture 46 and distributing groove 47.

In the operation of the stitch-forming mechanism, as the needle rises after a descent to extreme lower position, the needlethread is seizedby the point of the looptaker beak 8, thejtake-up at this time givlng slack, as represented in Fig. 6, to permit the rapid distention of a needle-thread loop in the casting operation performed by the looptaker. As the loop-taking member complet'es slightly more than a semi-rotation (-Fig. 1) from loop-seizing position the loopdrawing action of the take-up begins, the forcibly engaged by the take-up lug 22 and the stud-pin 37 which, during its thread-drawing engagement with the thread, performs an accelerated movement up to its stitchsetting position (represented in Fig. 7). .1

The needle having risen to its highest position and begun its descent, at the position represented in ig. 7, the needle-eye is slightly above the Work, and upon the fura pair of spaced ther rotation of the take-up the thread "is slackened so that as it passes wise injuring the thread. The needle-thread above the work remains slaekened through through the work there is no danger of cutting or othera period beginning with the position of the 1. A sewing machine take-up comprising.

a pair of spaced rotary disks, a plurality of relatively movable thread-engaging elements operatively connected to and rotating with and having operative portions intermediate said disks, and means including a controlling stationary element for producing between said thread-engaging elements relative circumferential movements.

A sewing machine take-up comprising rotary disks, an intermediate spacing lug connecting themtogether and affording a thread-engaging element, a

stud-pin rotating with and having on operative portion intermediate said disks and' affording a second thread-engaging element, and means connected with said stud-pin and including a stationarycontrolling element for imparting to the same to-and-fro circumferential movements.

3. A sewing machine take-up comprising a pair of spaced rotary disks, an intermediate spacing lug connecting them together and affordin mediate said disks and afi'ording a second thread-engaging element, a fulcrum-pincarried by one of said disks, a lever mounted upon said fulcrum-pin and carrying said stud-pin and formed intermediate the same with a. yoke, anda stationary eccentric embraced by said yoke for imparting swinging movements to said lever.

4:. In a sewing machine, in combination, a

rotary shaft, an actuating crank-pin thereon,

a reciprocating needle-bar carrying a needle,-

are disclosed herein in the I a thread-'engagingelement, a stud-pin having an operative portion interdisks and yoked to embrace said w-ccntric,

for imparting to one of said' thread-enga in elements to-and-fro circumferential movements.

5. A sewing machine take-up comprising a pair of spaced rotary disks, an intermediate spacing lug connecting them together, a stud-pin having an operative thread-engaging portion intermediate said disks, a lever carrying said stud-pin and having a fulcrum movable with said disks, a stationary eccentric operatively connected with said lever and formed with an internal lubricant cavity communicating with the operative face of the same, and a supply duct leading to said lubricant cavity.

sewing machine take-up comprising a pair of spaced rotary disks, an intermediate spacing lug connecting them together, a stud-pin having an operative thread-encopiu o! thin potent may be emailed or ave cent! gaging portion intermediate said disks, a yoked lever carrying said stud-pin and hav ing a fulcrum movable with said disks, a stationary eccentric operatively connected with said lever and formed with an internal lubricant cavity communicating with the operative face of thesame, a slide-block fitted upon said eccentric and embraced by the yoke of saidlever, and a supply duct leading to the l'ubricantfcavity of said eccentric.

In testimony" whereof, I have signed my name to this specification,in the presence of two subscribing witnesses.

JOHN C. RIN GE. Witnesses:

STANLEY N. 'SMITH, W. W. DELANEY.

each, by droning the "conmillioner to! Intuit Wellington, D. 0."

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