US1058905A - Take-up for sewing-machines. - Google Patents

Description

J. G. RINGE.

TAKE-UP FOR SEWING MACHINES. APPLICATION FILED 0014, 1911.

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WITNESSES.

Patented Apr. 15, 1913.

- BY J mzzaw 4 ATT R/VEY J. 0. RINGE. TAKE-UP FOR SEWING MACHINES.

APPLICATION FILED 00124, 1911. I

1,058,905. Patented Apr. 15, 1913.

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Jenn c; RING-E, 0F BnIne Pon'n'coNNEcTIcUr, as'src von .1 0 THE. SINGER MANUEAcTUnme COMPANY, A CORPORATION or NEW JERSEY.

TAKE-UP FOR SEWING-MACHINES.

Toall'whom it may concern:

Be it known that I, JoHN' C. 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 Take-Ups.

*for Sewing-Machines,of which the following is a specification, .reference'being had therein to the accompanyingdrawings The present construction comprises atake up lever pivoted at one end to-theih ead of the-sewing machine bracket arm, its opposite or free end being provided with the usual thread-eye as in the construction represented "by U. S. Patent No. 695,915, to'lV. F. Dial and G.- H. Dimond, dated March 25, 1902,

.for'ta-ke-up for sewing machines, in which the present construction is an. improvement, andbetween sa d pivotal point and free end 'I' there is provided an integrally formed operv atingkrm which passes loosely through a "swiveled connection carried by the main. or needle-bar-actuating shaft crank, thus effect- -mg a simple construction; and owing to the operating. arm located between the pivotal point and free end of the take-up lever, the latter is strengthened without any increase in its proportions, and lost motion is reduced to a minimum, resulting in positive and reliable action whether operated at a slow or an extremely high rate of speed.

In the accompanying drawings illustrating the invention, in the several views of which like parts are similarly designated, Figure 1 is a perspectiveviewjof a sewing machine equipped with the improvement, vFig. 2 represents details to be referred to hereinafter. Fig. 3 is'a diagrammaticlview illustrating the movements of the take-up,

and Fig. 4 is adevelopment of the paths of I movement of the needle point and take-up e e. e

In describing the present improvement,- only such limited reference will be made to the usual well known parts of the sewing machine as is deemedessential for, anunderstanding of the construction and application of the invention.

Referring to the figures, 1 represents the bed-plate of the sewing machine upon which ismounted the bracket arm comprising the armbracket 2, standard 3 and head 4, and

'5 the main or needle-bar-actuating shaft carryingat its rear end the band wheel 6 I Specification of Letters Patent. Patented Apr. 15, 1913. Application filed October 4, 1911. Serial No.

j andat itsopposite end the shaft flange 7 provided with a crank pin 8, said flange and crank'pin comprising the shaft crank. Journaled upon the crank pin 8 is one end of a pitman 9, the opposite end of said pitman being connected with the needle-bar l0, and

111 a bearing 11 formed in said crank pin is mounted a'swiveled connection 12 provided witha bearing-13 through which loosely passes the take-up operating arm 14: formed integral with the take-up lever 15, the latter being fulcrumedyOIi a stud 16 secured by screw 17in the head 4 of the bracket arm. 18 represents the commonly employed thread-eye formed in the free end of said takeqip lever. v

Referring to-Fig. 3, the upward movement. of the take-up commences practically at the point e and acts from that point to the point f to take up the thread gradually, from the pointto the point- 9 rapidly, from the point 9 to the point 71 still more and from the point it to the point 2' very gradually. From the point i to the point 7' the take-up is acting very slowly while giving down the thread by reason of the path of the connection 12 being so nearly in line with the operating arm 14. From thepoint j around-to the point d the take-up acts slowly and practically uniformly, although with ,slightly increasing and decreasing speed to and from about the middle (point 'a) of such movement. From the point 03 to the pointf, as from the point z' to thepoint j, the take-up has slight motion.

Referring. to Fig. 4, the curve. N represents the movements of the'needle, and T that of the take-up, one complete cycle of movement being shown in each instance, and by a comparison of this figure with Fig. 6 of Patent No. 695,915 it Will be seen that the take-up of the application is actuated to effect the same control as that of the patent-- ed construction.

Claims 1. In a sewin machine, the combination with the needlear,the rotary needle-baractuating shaft with its attached crank and rapidly,

the pitman connecting said crank with said needle-bar, of a take-up lever pivoted on a stationary support and having an integrally formed operating arm located between its pivotal point and free end, and means for actuating said take-up leverfrom said-crank comprising a swiveled' connecting elementcarried by said crank and through which said operating arm loosely passes.

Ina sewing machine, the crimb'nation with the needle-bar, :the rotary need e-baractuating shaft and its'attached crank and the pitman connecting said crank with said needle-bar, of a take-up lever pivoted on a stationary support and having an integrally formed operating arm located between its pivotal point and free end, and means for actuating said take-up lever from said-main.

bar operatively connected with said flange,

of a take-up lever pivoted on a stationary support and provided with an operating arm rigidly attached to said take up lever between itspivotal point and free end and means for actuating said operating arm comprising a swlveled connecting element carried by sald shaft flange and having rotary movements concentric with the axis of.

the latter.

4. In a sewing machine, the combination with a rotary needle-bar-actuating shaft with its attached shaft. flange and a needlebar operatively connected with said flange,

of "a tak'e-up lever pivoted on a stationary support and provided with an operating arm attached to said 'take-up le'ver between its pivot-a1 point and free end and means for actuating said operating arm comprising a swiveled connecting element carried by said shaftflange and having rotary movements concentric with the axis of the latter.

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

J OHN C. R'INGE. Wit-nesses:

ABBIE M. DONIHEE, THOMAS CAMPBELL.

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