US1129592A - Sewing-machine. - Google Patents

Description

L. ONDERDO'N'K.

SEWING ISZIAGIEIIBIE.- APPLICATION FILED SEPT. 10,1907.

1,1 29,592, Patented Feb. 23, 1915.

4 SHEETSSHEET 1.

wmmm of v 331 w L; UNDERDONK.

SEWING MACHINE. APPLICATION IIILED SEPT. 10,1907.

1,1 29,592. I I Patented Fb. 23, 1915.

Kg. Snueutoz Witnesses 61mm, S

L. ONDERDONK.

SEWING MACHINE.

APPLICATION FILED SEPT. 10, 1907 Patented Feb. 23, 1915.

- 4 SHEETS-SHEET 3.

. Q 55 Q i g 1 J6 g Snow/W01 q/Vitneoozo of WW 'rnn snares ra'rnnronmon.

LANSING ONDERDONK, OF NEW YORK, N. Y., ASSIGNOR T O UNION SPECIAL MACHINE COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

SEWING-MACHINE.

Specifieation'of Letters Patent. PatentedFeb. 23, 1915.

Application filed September 10, 1907. Serial No. 392,211.

To all whom itmag concern:

Be it known that I, LANSING ONDERDONK,-

a citizen of the United States, residing at New York,-in the county of New York, State stitchsewing machine, wherein ,the stitch is formed and practicallyfinished for each reciprocation of the needle bar.

A further object of my invention is to providea sewing machine of the above character, wherein the-looper receives practically all its movements While the needle is on its up stroke. I v v A still further object-of my invention is toprovide a stitch-forming inech'anism, wherein the looper thread is transferred to a thread retainer, and the looper returned to its extreme backward position, while the needle is on its up stroke.

These and other objects will in part be obvious, and in. part be hereinafter more fully described. I In the drawings which by way of illustration, show one embodiment of my invention,-Figure 1 is'a front plan view, showing a sewing machine embodying my improvement, the worksupport beingremoved to expose the looper-operating mechanism;

Fig. 2 is a top plan "view of a machine embodying my improvements the feeding mechanism being broken away for the sake of clearness; Fig. 3 is a sectional detail view, showing the feeding mechanism and the looper mechanism; Fig. 4 is a similar view with the needle in a different position; Fig. 5 is a detail showing in side elevation, the. means for vibrating the thread retainer; and Fig. 6 is a detail View, showing the' rock arms for oscillating the looper. Fig. 7 is a side view of the parts shown in F 6.

The bed plate 1 has rising therefrom an overhanging arm 2, carrying lugs at the forward end in which reciprocate a needle bar 3. The needle bar 3 carries a needle-latiits.

lower end and receives its reciprocation from 5 5 receives its oscillation from an eccentric The lever 5 is connected to the strap 7, which cooperates with an eccentric 8 on the main shaft 9. Said main shaft is rotated by a belt wheel 10, or any-other suitable means. A looper 11 is secured to an arm 12 by means of ascrew 13. The loopercarrying arm 12 is pivoted at 14 to a stud 15,1which is secured to a collar on the loopersupporting shaft 16. The looper-carrying arm 12 is provided with a'ball stud 17, which is engaged by a link 18, which is pivoted at its opposite end to a-stud 19 carried by a rock lever 20. The rock lever 20 is pivotally connected to a fulcrum stud 21, secured a to the arm 2 of the machine. The rock lever 20 is provided with a second arm-22 (see Fig. 2). The arm '22 has a collar formed integral therewith, to which the arm, 20 is clamped by means of a set screw 23, so that the two arms 20 and 22 move together about the fulcrum stud 21. The arm'22 is connected to a rock lever 24, by means of a link 25, which point 26. The other arm 27 of the rock lever 24 is slotted, and provided with an adjustable stud 28. The stud 28 is connected to an eccentric strap 29fwhioh-co6perates with an eccentric 30' on the main shaft 9. -A feed dog 31 is carried by the feed bar 32, which is pivoted'to a rockingframe 33. The rocking frame 33 receives its movement from a crank disk,34' on the end of the shaft 9 in means of a screw 36. The outer end of the arm 35 is forked (see Figs. 3 and 4), and engages a cam 37 secured to the shaft 9. As the shaft 9 is rotated, the looper support 16 is oscillated to give the looper carried by said support its needle-avoiding movement. Also as the shaft 9 rotates, the eccentric 3B rocks the lever 24, which in turn rocks the lever arms 22 and 20, and through the link 18 oscillates the looper back and forth in the direction of its length.

The thread retainer 38 is mounted in an arm 39, which is pivotally mounted upon a stud 40. The stud 40 is mounted in a split collar 41, carried on an arm 42, which is clamped by means of a screw 43 to a post 44, rising from the bed plate. The arm 39 at its rear end carries a ball stud 45, which is engaged by a link 46. The link 46 at its opposite end engages a ball stud 47, carried on the outer end of the arm 48. The arm The looper support 16 48 is provided with an offset member 49, and between the arm 48 and the member 49 rotates a cam 50 carried bythe main shaft 9 of the machine. As the main shaft rotates, the arm i8 is vibrated up-and down,

lever 24: is rocked, said pivotal connectionmoves from the position at the left of a line connecting thefulcrum of the rocklever 24, and the pivotal connection of the link 25,

to'tlie arm 22, to a position slightly at the right of said line. The result of this position of the parts is that the looper on its return" stroke moves rapidly out of the needle loop and the speed of the looper gradiually f decreases until the. pivotal connection abovereferred to,reaches the line also referred to, at which time the movement of the looper ceases.

The movement of this pivotal connection to the right of said line,

as viewed in Fig. 1, gives little or no movement with the looper.

The operation of themachine is as follows: Starting with the needle at the lower end ofits stroke, and the looper is at this time in its retracted position, just beginning its forward stroke, as the needle rises the usualneedle loop is thrown out, which 'is entered very quickly by the looper, which passes on to the end of its stroke, reaching the same practically by the time the eye of the needle reaches the upper surface of the material. The looper is now moved laterallyby the cam-37 and the thread retainer 38 moves up into the looper thread loop. The looper immediately begins its backwardv oscillation, and by the time the needle reaches the upper end of its stroke, said looper pract'ically reaches the rear end of its stroke, leaving the looper thread loop upon the loop retainer 38. As soon as the looper point in.

its backward movement passes the needle path and the loop retainer, the needle'loop taken by said looper on its'forward stroke is shed or dropped, and the needle in completing its upstroke draws said needle loop up close to the work, finishing thestitch.- It will thus be seen that-.1 have provided a .cliain stitch sewing machine, including a threaded looper,=which operates to form a sga.

615 in its final pull upon the needle thread to chain stitch and to practically finish the stitch on the up stroke of the needle.

aIn my device, where the stitch is'formed andpractically finished-0n the up stroke ofthe needle, it will be noted that the needle set the stitch, is pulling the thread directly up through the needle puncture in the material, and, therefore, I am enabled to draw the stitch very tight. As a matter of fact, by my stitch-forming mechanism, I am enabled todraw the looper thread practically to the upper side of the material; if desired.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is Y 1. A sewing machine including in combination, a needle, means for reciprocating said needle, a work support, a looper beneaththe work support, means for moving said looper into theneedle loop, laterally while in the needle loop and for retracting the same out of the needle loop on the upward movement, of the needle, a loop retainer, and means for moving said loop retainer into the looper thread loop prior to the shedding of the needle loop from the looper.

2. A sewing machine including in combination, a work support, feeding mechanism, a needle means for reciprocating the needle,a looper cooperating with saidneedle beneath the work support and moving in a plane substantially at right angles to the line of feed, means for moving the looper into the needle loop and out of the needle loop on the upward movement of the needle, a loop retainer; and means for moving the loop retainer into the'lo'op'er thread loop prior to the shedding of the needle loop from the looper and for causing said loop retainer to dwell to hold the looper thread loop beneath the work support for the'entrance of the needle.

3. A sewing machine including in combination, a work support, a feeding mechanism, a needle, means for reciprocating the needle, a looper coeperating with said needle beneath the work support and moving in .a plane substantially at right angles to the 'line of feed, means for moving said looper into the needle loop and laterally while 1n the .needle loop and then retracting the looper out of the needle loop on the upwardv movement of the needle, a loop retainer, and means for moving said loop'- retainer into the looperv thread loop prior' to the shedding of the needle loop from the looper.

4. A. sewing machine including in combination, a work-support, afeeding mechanism, a needle, means for reciprocating the needle, a looper cooperating with the nee dle beneath the work support and moving in a'plane substantially at right angles to the line of feed, means for reciprocating-said looper into the needle loop and for moving the looper laterally and then retracting the looperfrom .the needle loop on the upward movement of the needle, 2. loop retainer moving in aplane inclined to the path of movement of thelooper, and means for moving said loop retainer into thelooper thread loop prior to the shedding of the needle loop from the looper.

5. The combination with a needle, a looper, a thread retainer, means for moving said thread retainer into the'looper thread loop and for moving said looper out of the needle loop on the upward stroke of the needle, and means for adjusting the throw of the looper.

- 6. The combination with a needle, a looper, a thread retainer, cooperating with the needle beneath the material, a support therefor, a yoke pivoted to-the bed plate of the machine, a rotary shaft, a cam carried by said shaft for operating said yoke, and means for connecting said yoke to said, re-

tainer for oscillating the same on its support.

7. The combination with a' needle, a

looper, a main shaft, a rock arm connected the needle is on its upward stroke and said looper is given a dwell at the rear end of its stroke during substantially the entire downward movement of the needle.

8. A sewing machine'including in combination, a work support, a needle, means for reciprocating the needle, a looper, a looper arm on which said looper is mounted, means for oscillating said arm in a direction substantially at right angles to'the line of feed, means for swinging said arm laterally while the looper is at the forward end of its stroke, a loop retainer mounted for movement into the looper thread loop, an arm on which said loop retainer is mounted, means for pivotally supporting said arm for the loop retainer, whereby said arm swings in a plane inclined to the plane of move ment of the looper-supporting arm, and means for oscillating said loop retainer arm.

In testimony whereof I afiix my signature, in presence of two witnesses.

LANSING ONDERDONK. Witnesses:

WALTER HARTLEY, FRANKLIN H. CHruroN.

Images