US1166037A - Sewing-machine take-up. - Google Patents

Description

W. L. BARRON.

SEWING MACHINE TAKE-UP.

APP LICATION FILED MAR. 6, 1913.

1,166,08? Patented Dec. '28, 1915.

WITNESSES: INVENTOH wd/ M f QM BY 0 5$". M v

COLUMBIA PLANOGRAPH C0., WASHINGTON. D. c,

UNllTE TATF ATFNT ion.

'WILL I AM LUTHER BARRON, OF NEW YORK, N. Y., ASSIG-NOR 1'0 THE SINGER MANU- EACTURING COMPANY, A CORPORATION OF NEW JERSEY.

SEWING-MACHINE TAKE-UP.

Application filed March 6, 1913.

To aZZ whom it may concern:

Be it known that I, YVILLIAM L.-lBARRON, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Sewing- Machine Take-Ups, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention relates to sewing machines and particularly to the take-up, the object being to provide a construction by which the operator is enabled to thread the takeup without the loss of time and the annoyance incident to the usual type of take-up.

The invention will be understood by reference to the accompanying drawings in which Figure 1 is an end view of a sewing machine head having my improvement thereon, a part being broken away and certain other parts in section; Fig. 2, a side View of apart of the machine head; Fig. 3, a perspective of my improved take-up; and Fig. 4, a perspective of a part of the take-up with a compensator.

Similar reference numerals indicate similar parts in the several views.

For the purpose of illustrating one embodiment and applicationof my invention I have shown the same .in a form adapted for use in connection with a multiple needle machine in which the numeral 1 designates the arni, 2 the face plate, .3 the presser-foot bar, 4: the lifter for presser-foot har, 5 the needlebar to which is secured four needles, 6 the driving shaft, and 7 the needle-bar crank on the driving shaft which crank is connected through a link 8 with a stud-clamp 9 on the needlebar 5 to reciprocate the latter vertically. These parts are of a usual and well known form. The clamp 9 has an extension 9? (Fig. 3) to which the needle thread take-up is secured.

The improved take-up comprises an angular plate 10 the lower part of which is formed with an elongated slot 11 through which a set-screw is passed to permit of the vertical adjustment of the take-up. The lateral extension of plate 10 is substantially U-shaped, the outer or leading-in arm 12 of which is formed with notches or open-ended slots, the notches or slots being of such width and depth as to properly receive and hold the threads. The form shown resembles Specification of Letters Patent.

Patented Dec. 28, 1315. Serialll'o. 752,271.

a short distance in advance of arm 12, is a controller-arm 13 which acts in conjunction with a rigid finger 23 mounted on the machine head to exert a pull upon the needlethread as the needles approach their lowermost position, whereby slack in the previously formed needle loops around the needle-blades is drawn upward. The member 13 serves also to retain the threads in place within the slotted arms during the op eration of the machine. The other arm 1st of the U-shaped extension, or that forming the direct lateral extension of plate 10, is similarly notched or slotted and serves as a guide for the threads, the notches or slots in the two arms being in substantial alinement. The two arms 12 and 14 also serve as bearings for the thread when the latter isacted upon by the compensator. The latter consists of a lever 18 pivoted on a stud 19 on the inner side of face-plate 2, and is actuated by an arm 20 fixed to the presserfoot bar 3. The arm 20 carries at its outer end a roller-stud 21 which engages the slot 18 in the end of lever 18, shown in Fig. 1. The other. end 22 of lever 18 is widened and constitutes the thread-engaging end of the compensator.

Secured to the side of the machine head, and extending laterally therefrom a short distancein advance of and above the guard 13 when the take-up is in its lowermost position, is a finger 23 over which the threads pass when the needles descend. It will be seen that the action of the controller-arm 13 will bend the threads over finger 23, the latter acting as a friction device to enable the stitclnsetting arm in its downward movement to pullsla'ck from the loose loops then through thread-guide 25 on the needleclamp 26, and then to the needles. In threading up to start sewing, or when a thread breaks during the sewing, the simplicity and ease of threading through the above described take-up will be obvious. Instead of being required to manipulate the end of the thread to pass it through a. small opening in the usual take-up arm, often requiring considerable time owing to the location of the take-up, with the difficulties increased when operating a multiple needle machine because of the presence'of other threads, an operator with the present takeup simply inserts the thread under controller-arm 13 and drops it intothe proper notch or slot of arms 12 and 14, the free end of the thread being accessible for passing through the needle-eye.

In the operation of a double chain-stitch machine to which the present take-up is shown as attached, the described take-up will perform the functions usual to such devices, that is, in that class of machine the take-up will cooperate with compensator lever 18 to draw off thread from the source of supply when the needles are on the upstroke near their highest position, and will set the stitch when the needles are on their down-stroke and near their lowermost posi' tion, the controller arm 13 serving as the upper bearing for the threads, and the lower walls of the notches or slots in arm 12 serving as the lower bearing for the threads. The compensator also performs its usual and well-known function.

Nhile I haveshown the take-up arm 12 as having substantially rectangular slots, the invention is not limited thereto, as the slots may be of different forms provided they are open-ended so as to permit the threads to be laid therein.

Having thus set forth the nature of the invention, what I claim herein is 1. A self-threading take-up device comprising a take-up arm and means for ad justably connecting the same to the needlebar of a sewing machine, said arm being formed with an open slot into which the thread may be laid, a tln'ead-controller-arm substantially parallel with said take-up arm and having an operative face opposed to the Copies thread-engaging portion of the latter arm, a thread-engaging member adapted to cooperate with the said thread-controller arm, and an operative connection between said thread-controller-arm and the needle-bar.

2. In a sewing machine,'the combination with a frame, of a needle-bar mounted in said frame and actuating means therefor, a take-up device comprising a take-up arm formed with an open slot into which the thread may be laid, means for adjustably connecting said arm to the needle-bar, a thread-controllenarm movable with the needle-bar adjacent the take-up arm and having an operative face opposed to the threadengaging portion of the latter arm, and a linger adjustably mounted on said frame and adapted to cooperate with the threadcontroller-arm.

3. A self-threading take-up device for sewing machine comprising a plate having a U-shaped extension, both arms of said extension being formed with a series of open slots into which the thread may be laid, a third arm carried by said plate adjacent one of its slotted arms and having an operative face opposed to said slots, and means for connecting said plate to a needle-bar.

l. In a sewing machine, the combination with a frame, a needle-bar mounted in said frame and actuating means therefor, of a take-up device comprising a plate adjustably connected to the needle-bar and having a. U-shaped extension, both arms of said extension being formed with a series of open slots into which the threads may be laid,a tln'ead-controller-arm carried by said plate substantially parallel with one of its slotted arms and having a thread-engaging face in opposition to said slots, a finger adjustably mounted upon said frame and adapted to cooperate with said thread-controller-arm, and apull-off member adapted to engage the threads lying between said slotted arms.

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

WV'ILLIAM LUTHER BARRON.

Witnesses:

JOHN C. POHLMAN, WM. P. STEWART.

of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G.

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