US1137654A - Sewing-machine. - Google Patents

Description

W. MYERS. SEWING MACHINE.

APPLICATION FILED SEPT. 27, 1913.

1,137fi5k Y Patented p 27, 1915.

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WIT/V5885?! INVENTOR wd/M5 wallbr 7790213.

, BY Q A TTORN E V w. MYERS.

SEWING MACHINE.

Y APPLICATION FILED SEPT-27.1913.

L13? 654@ t nted Apr- 27, 1915.

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EUNXTEU TATES PATENT @ltbhlltllil.

WALTER MYERS, F BRIDGEPOR'I, CONNECTICUT, ASSIGNOR TO THE SING-ER MANU- FACTURING COMPANY, A CORPORATION OF NEW JERSEY.

SEWING-MACHINE.

Application filed September 27, 1913.

T (ZZZ whom it may] concern Be it known that I, WALTER MYERS, 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 Sewing-Machines, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to improvements in sewing machines, and particularly that class commercially termed Bonnaz embroidering machines, substantially such as are represented by United States Patent No. 83,910, dated November 10, 1868, to A. Bonnaz.

Two forms of embroidery stitches are 'common to machines of this type, viz: the

ordinary chain or crotchet stitch and the sotermed drop or moss stitch; and the object of the present invention is to provide improved means for altering the character of the stitch without changing the operative relationship of the looper and its actuating gear member.

In the earlier constructions, before chang' ing the character of the stitch it is necessary' to disconnect the looper from its driver and give to it a half turn and a like adjustment to the needle, and in effecting these adjustments extreme care is essential to the proper retiming of the looper with respect to the line of'needle actuation. In the present construction, when it is desired to change the character of the stitch, instead of being obliged to change the relationship of the looper and its driver, it is merely necessary to give to the looper a half turn independently of the needle and feedactuating mechanism and re-set the needle a half turn. i

Reference being had to the accompanying drawings, Figure 1 is a view illustrating the present invention as applied to so much of a universal feed embroidery machine as is necessary to demonstrate its application; Fig. 2 an underside view of Fig. 1; Fig. 3 a view partially in full lines and partially in section of the elements comprising the present invention, illustrating their application to the looper-actuating shaft; Fig. 4 details in perspective of the elements shown in Fig. 3 carried by the looper-actuating Specification of Letters Patent.

Patented Apr. 27, 1915.

Serial No. 792.107.

shaft; Fig. 5 a perspective View of a portion of the looper and needle, illustrating their relationship in the formation of a chain stitch seam; Fig. 6 'a view similar to Fig. 5, illustrating the relationship of the looptaker and needle in the formation of drop or moss stitches; Fig. 7 a plan view of the needle-plate, it being broken out to show the upper end of the underlying threadlooper; Fig. 8 a view illustrating the formation of a succession of chain and drop stitches; and Fig. 9 a view of one form of embroidery effected by the improved machine.

Referring to the figures, 1 represents the bed-plate, 2 the base of the arm standard, 3 the lower end of the head of the bracket arm, 4 the tubular nipple, 5 the nipplecarrying tube, 6 the nipple-carrying tube bushing, 7 the feeding foot, 8 the needle, 9 the needle-plate, 10 the thread-looper, 11 the thread-looper-driving gear carried by the thread-looper-actuating shaft 12, and 13 the gear-shaft provided with a gear 7' for operatively connecting, through the gear members 8, 9, 10', 11 and 13. the hand crank 12' With the universal feed-directing and needle-turning mechanism of an embroidery machine of the variety represented by the patent previously referred to, the only elements shown as located above the bed-plate of the sewing machinebeing 4, 5, 6 and 7.

1t represents a shaft bearing bracket suitably secured to the underside of the' bedplate and provided with hearing lugs 15 and 16 into which is journaled the tubular bearing '17 carrying at one end the gear member 8' and at its opposite end the like gear member 9, the rear end portion 20 of said tubular bearing acting as a bearing for the rear end of the shaft 12.

'21 represents a guide collar adjustably secured by screw 22' on the shaft 12, said guide collar comprising the collar 23, arm 24, guide block 25 and detached shaft bearing 26, said two-part guide collar being a preferred form of construction to meet the requirements of assembling, as shown in Fig. 3.

27 represents a shaft-adjusting cylinder having an extended portion 28 provided with a forked end 9.9 and an enlarged with respect to the shaft 12 by the teat 35 of the screw 36 loosely entering the annular groove 37 (the latter and the teat 35 being shown in dotted lines only, Fig. 4) formed in the shaft 12, said stop tracking the guide slot 37' formed in the tubular bearing 17. The forked extension 28 and the forked stop element 34'comprise a clutch mechanism for maintaining given relative adjust-' ments of the thread-looper and universal feed-directing mechanism and permitting of their relative adjustment to effect stitches of different character.

38 represents a rock-lever pivoted at 39 to a depending lug 40, the arm 42 of said lever being pivotally attached to the end of the shaft 12 to move said shaft in oppositely arranged longitudinal directions to cause the gear member 11 to transmit oscillatory stitch-forming movements to the thread-looper-lO and to permit its rotation independently, of said pivotal connection, the arm 43 of said lever being connected by a universal joint 44 to the lower end of the shaft-oscillating rod 45, which latter is given oppositely arranged vertical movements from an eccentric (not shown) carried by an upper or main shaft (not shown) in a manner common to machines of the present type. The elements as 46 comprise parts of the stop-motion mechanism, but as the latter has no particular bearing on the present invention, further reference to such parts isdeemed unnecessary.

Supposing the machine to be adjusted for effecting thechain stitch seam 47, as shoWn by Fig. 5, and it is desired to effect the drop or moss stitch 48, as shown by Fig 6, the operator by movingthe shaft-ad ustmg cylinder 27 in opposltion to the resillency of the spring 32 withdraws the forked end 29 from engagement with the forked end 33 of the shaft-adjusting cylinder stop 34, and when said ends are free'and the crank handle is held against movement, the elements 10, 12, 21 and 27 are given a half turn, which positions the thread-looper as in Fig. 6, followed by permitting the forked end 29 to again engage the forked end 33, when the needle is adjusted from the position shown in Fig. 5 to that shown in Fig. 6, thus causing the thread-loop to be forced out of the open eye of the needle 'as the latter pierces the fabric, which effects the dropvor moss stitch 48.

From the foregoing it is to be understood that the present invention is confined to the means employed for effecting relative adjustments of the thread-looper with respect to the feed-directing mechanism without disengaging the thread-looper from its actuating shaft, and as'the class of machines herein referred to is well understood by those skilled in the art, further d emed unnecessary.

What I claim is 1. In a sewing machine, the combination with a universal feed-directing mechanism, a stitch-forming mechanism including an open-eyed needle and thread-looper, and means for actuating said mechanisms including a thread-looper-actuating shaft, of a clutch mechanism comprising coacting forked members, one of'whichis adjustable axially and in the direction of its length for maintainin given relative adjustments of said threa looper and clutch mechanism and permitting their relative adjustment for eflecting'stitches of different character.

In a sewing machine, the combination with a universal feed-directing mechanism, a stitch-forming mechanism including an open-eyed needle and thread-looper, and means for actuating said mechanisms including a thread-looper-actuating shaft, of a resiliently controlled clutch mechanism comprising coacting forked members, one of which is-adjustable axially and in' the direction of its length for maintaining given relative adustments of said clutch mechanism and thread-looper and permitting their relative adjustment for effecting stitches of different character. v

3. In a sewing machine, the combination with a universal feed-directing mechanism, a stitch-forming mechanism including an open-eyed needle and thread-looper, and

description is means for actuating said mechanisms including a thread-looper-actuating shaft, of means including a spring-controlled clutch mechanism for maintaining given relative adjustments of said thread-looper and clutch mechanism and justment for effecting stltches of different character.

'4. In a sewing machine, the combination with a universal feed-directing mechanism, a stitch-formin mechanism including an open-eyed need e and thread-looper, andmeans for actuating said mechanisms including a thread-looper-actuating shaft, of

means including a spring-controlled clutch mechanism located between said shaft and feed-directing mechanismfor maintaining given relative adjustments of said thread- -looper and clutch mechanism and permitting their relative adjustment for stitches of different character.

5. In a sewing machine, the combination with a universal feed-directing mechanism, a stitch-forming mechanism including an open-eyed needle and thread-looper, and means for-actuating said mechanisms ineluding a thread-looper-actuating shaft, of

permitting their relative ada clutch mechanism including coacting forked members carried by said shaft for maintaining given relative adjustments of the clutch mechanism and said feed-direct- 5 ing mechanism and permitting their relative adjustment for efiecting stitches of different character.

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

I WALTER MYERS.

Witnesses:

STANLEY N. SMITH, ABBIE M. DONIHEE.

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