US761558A - Sewing-machine. - Google Patents

Description

No. 761,558. PATENTED MAY 31, 1904.

- .E.'J. TOOP.

-i SEWING MACHINE;

APPLIUATI ON FILED JUNE 26', 1889.

N0 MODEL.

2 SHEETS-SHEET 1.

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' No. 761,558. I PATBNTED MAY 31, 1904.'

. 5. TOOF. SEWING MACHINE;

APPLIOAT ION FILED JUNE 26, 1889.-

No MODEL.

2 SHEETS-SHEET 2.

$51 mf m UNITE STATES- ]?atented May 31, 1904. v

PATENT, OFFICE.

EDWIN J. TOOF, OF NEW HAVEN, CONNECTICUT, ASSIGNOR TO THE EDWIN J. TOOF COMPANY, OF NEW HAVEN, CONNECTICUT, A COR- PORAIION on NEW JERSEY.

SEWING-MACHINE,

\ SPECIFICATION forming part of Letters Patent No. 761,558, dated May 1904.

' A nmnn filed June 26, 1889. Serial No. 315,667. (Nomodeh) V Tb all whom it may concern/.

Be it known that I, EDWIN J. TOOF, a citizen of the United States, and a resident of thecity of New Haven, county of New Haven, and State 5 of Connecticut, have invented new and useful Improvements in Sewing-Machines, of which the following is a specification.

My invention has for its object to provide a sewing-machinethat may be used for makj 1 ing either a lock-stitch or a chain-stitch. In carrying the invention into effect I provide a lock-stitch sewing-machine'of ordinary construction with a chain-stitch device which will be inoperative during the operation of the machine in making lock-stitches, but which may be rendered operative to adapt the .machinevfor making chain-stitches whenever -1t 1s so deslred, such change in the operation of the machine for the formation of the different stitches being effected withoutthe addition or substitution of any parts.

Referring to the accompanying drawings, 1 [forming part of thls speclfication, Figure l is a front endele'vati'on, partly broken away, of 5 a sewing-machine embodying my invention.

Fig. 2 is an under side View of the same, on a Figs. 3, 4:, 5, and .6 are detail views illustrating the operation of my inven} tion, and Figs. 7, 8, and 9 are detail viewsto';

reduced scale.

3 be hereinafter referred to.

loop-taker or. shuttle C, actuated from said i 4 driving-shaft, and the vertically-reciprocat ing needle a.

. The chain-stitch device embodying my invention, as herein shown, comprises a loop-1 with the needle and the loop-taker in the for;

mation of a chain-stitch in a manner asfolthe said needle descends, and as it rises it lows: The machine being set in motion to re-] ciprocate the needle and rotate the loop-taker, 5

throws out a loop of thread a which is seized by the beak 0 of the loop-taker, asshown in Fig. 3, and as said loop-taker continues itsrotation and the needle continues to rise the said loop is carried around the bodyof, the

loop-taker. in the usual manner, as indicated in Fig. 4, until said loop-taker reaches the position shown in Fig. 5, when the loop,.having been partially drawn up by the take-up, will be engaged by the loop-holder E and held thereby in an open or distended condition across the path of movement of the needle, the said loop-holder having been moved. forward to such loop engaging andholding position dur- 5 ing the described rotation of the loop-taker. Y At this time in the operation of the partsthe needle will descend into the space between the two prongs at the forked end of the loopholder and carry its thread through the distended loop held thereby, as shown in Fig. 6. As the parts now continue their operation I the loop-taker will be moved back from its holding position, so as to cast off the loop held thereby, as shown in Fig. 3, and the second loop thrown out by the needle will be seized by. the loop-taker beak and drawn through j, the first loop, which latter is subsequently Similar reference characters designate like parts in theseveral figures of the drawings. My invention is herein shown as applied to:

a Standard? lock-stitch sewing-machine of 35 usual construction and operation, the same; embodying the work-plate A, the rotary driv- ,ing-shaft B, mounted in suitable bearings at; the under side of said work-plate, the rotary provide for such positioning of the loop, the

loop-holder E is providcdwith a transverselyarrang'ed notch c at jitsunder side and in a 90.

position forward of the rear end of the space or slot between the prongs of the loop-holder into which the thread-loop is received and properly positioned, as most clearly shown in Fig. 9. The loop-holder maybe actuatedto have a forward-and-backward or reciprocating movement to cooperate with the needle and the loop-taker in the formation of a chainstitch in the manner described by any suitable means, the means provided for such purpose, as herein shown, comprising a lever D, pivoted at one end to the under side of the work-plate at cl and at its opposite end having the said loop-holder E attached thereto and a cam F on the shaft B, against which the said lever is operatively held by asuitable spring, such as G. With these parts rotation of the cam F will vibrate the lever D, which in turn will impart the desired reciprocating movement to the loop-holder, as before described.

When it isdesired to employ the machine for lock stitch sewing, the loop-holder E should be held in a stationary or inoperative position, and as a simple and effective means for doing this a locking-lever H is pivoted to the under side of the work-plate at it and provided with a projection it thereon for cooperating with a cam-surface d at the free end of the lever D to draw the latter away from operative engagement with the cam F, as indicated by dotted lines in Fig. 2, and hold the same in such position until it is again desired to employ the machine for chain-stitch sewing, when it will only be necessary to swing the locking-lever H back from its position of holding engagement with the lever D, whereupon the latter will be automatically returned to its operative position under the action of the spring G.

When the machine is used for lock-stitch sewing, the loop-taker will contain the usual bobbin carrying the underthread-supply; but

when the machine is used for chain-stitch sewing, the said underthread-supply is unnecessary, and therefore the bobbin containing the same will preferably be removed from the loop-taker, the bobbin-case I, however, being employed, so as to present a smooth surface at the face side of the loop-taker for the free and unobstructed passage of the front side of the thread-loop thereover. Aside from this insertion and removal of the bobbin into and from the loop-taker the only change necessary to adapt the machine for either chain-stitch sewing or lock-stitch sewing is the mere shifting of the loop-holder to and fromits operative position, as described.

What I claim is 1. In a sewing-machine, the combination with the needle and a loop-taker, of a loopholder operative for receiving the needlethread loop after it has been released by the loop-taker and holding the same in an open or distended condition across the path of the needle and thereafter releasing the loop subsequent to the passage thereinto of the needle, the said loop-holder being provided with a forked or slotted end for the passage of the needle into the loop held thereby, and means for actuating the loop-holder.

2. In a sewing-machine, the combination with the needle and a loop-taker, of a loopholder independent of the loop-taker and operative for receiving the needle-thread loop after it has been released by the loop-taker and holding the same in an'open or distended condition across the path of the needle and thereafter releasing the loop subsequent to the passage thereinto of the needle, the said loop-holder being provided with a forked or slotted end for the passage of the needle into the loop held thereby, and means for actuating the loop-holder.

3. In a sewing-machine, the combination, with the needle and a loop-taker, of a reciprocating loop-holder for receiving the needlethread loop after it has been released by the loop-taker and holding the same in an open or distended condition across the path of the needle, said loop-holder being provided with a forked or slotted end for the passage of the needle into the loop held thereby, and means for actuating the loop-holder.

I. In a sewing-machine, the combination, with the needle and a loop-taker, of a reciprocating loop-holder for receiving theneedlethread loop after it has been released by the loop-taker and holding the same in an open or distended condition across the path of the needle, said loop-holder being provided with loop-positioning means and with a forked or slotted end for the passage of the needle into the loop held thereby, and means for actuating the loop-holder.

5. In a sewing-machine, the combination, with the needle and a loop-taker, of a reciprocating loop-holder for receiving the needlethread loop after it has been released by the loop-taker and holding the same in an open or distended condition across the path of the needle, said loop-holder being provided with loop-positioning means at its under side and with a forked or slotted end for the passage of the needle into the loop held thereby, and means for actuating the loop-holder.

6. In a sewing-machine, the combination, with the needle and a loop-taker, of a reciprocating loop-holder for receiving the needlethread loop after it has been released by the loop-taker and holding the same in an open or distended condition across the path of the needle, said loop-holder being provided with a loop-positioning notch and with a forked. or slotted end for the passage of the needle into the loop held thereby, and means for actuating the loop-holder.

7 In a sewing-machine, the combination, with the needle and a loop-taker, of a reciprocating loop-holder for receiving the needlethread loop after it has been released by the loop-taker and holding the same in an open or distended condition across the path of the needle, said loop-taker being provided with a forked or slotted end for the passage of the needle into the loop held thereby; and means, including a vibrating lever, for actuating said loop-holder.

8. In a sewing-machine, thecombination,

a forked or slotted end for the passage of the' needle into-the loop held thereby, and means including a cam and a lever for actuating said loop-holder.

9. In a sewing-machine, the combination,

with the needle and a loop-taker, of a reciprocating loop-holder for receiving the needlethread loop after it has been released by the loop-taker and holding the same in an open or distended condition across the path of the needle, said loop-holder being provided with a forked or slotted end for the passage of the needle into the loop held thereby, means for actuating theloop-holder, and means for holding the loop-holder in a stationary or inoperative position, for the purpose set forth.

' EDWIN J. TOOF. Witnesses:

JOSEPH M. CRANE, v CHAs. F. DANE.

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