US1419718A - Guard for sewing-machine needles - Google Patents

Description

J. CHERTOK.

GUARD FOR SEWING MACHINE NEEDLES. APPLICATION FILED Aus.4. 1921.

1,419,718. 1 PatentedJuneB, 1922.

Inventor: JOSEPH CHERTOK JOSEPH CHERTOK, OF NEW YORK, N. Y.;. ASSIGNOB, '10 CHEETOK SAFETY APPLIANCE COMPANY, A CORPORATION OF NEVADA...

GUARD FOR SEWING-MACHINE NEEDLES.

Specification of Letters Patent. Patented Jane 13, 1922;

Application filed August 4, 1921. Serial No. 489,671.

T 0 all whom it may concern:

Be it known that I, JosnPH CHnR'roK a citizen of the United States,- residing at New York city, in the county of New York and State of New York, have invented certain new and useful Improvements in Guards. for Sewing-Machine Needles, of which the following is a specification.

My invention relates to improvementsin needle guard attachments for sewing machines to prevent the fingers of the operator from becoming injured by the needle while the machine is in motion. :Serious accidents have resulted from careless manipulation of work by an operator and the principal object of the present invention is to provide a practical protecting means, in the form of a metal guard designed to so' closely house the reciprocating needle that it is practically impossible for the operators fingers to get beneath the descending needle.

The greatest difficulty experienced in the use of devices of this character, of which there are several on the market, is brought about by having the guards of such design and proportion that the proper view of the work is obstructed at a point where the needle enters the goods to catch the stitch. A further objection resulted in the amount of work required to change the presser foot. It will be understood that many kinds of work require several varieties of presser feet in order to make the proper stitches to produce desired effects. This has been rendered difiicult because the guard was attached to the removable foot, and when replaced by another foot of different size and shape the guard would not readily accommodate itself to the changes.

In order to overcome these dificulties, I attach the guard to the presser rod, the former having an offset depending portion to house the needle. This design permits the changing of the presser foot without disturbing the guard. The lower portion of the guard surrounding the needle is tapered near its end, in order that the operator may have an unobstructed View of the work passing beneath the needle and guard.

The invention is illustrated in the accompanying drawings, wherein like characters refer to like parts throughout the several views.

Fig. 1 is a perspective view. of the improved guard attachment attached to the presser bar of a conventional sewing machine arm.

Fig. 2 is a horizontal sectional view on the llnes 22' of Fig. 1.

Fig. 3 is a perspective of the guard at tachment, and

Fig. 4 is a bottom plan view of Fig. 3.

Referring to the drawing, 10 denotes a portion of the arm of a. sewing machine having the usual presser'bar 11 andneedle .bar 12 reciprocably mounted therein and extending below the arm 10. The lower end of the presser bar 11 is provided with an attachable presser foot 13, which may beof any of the well known types now in use. Said foot is provided with a split toe portion projecting forward to receive the needle 14 which is securely held by a clamping collar 15 embracing the lower end of the needle bar 12.

Attachable to the presser bar 11 is a split sleeve 16 having outwardly turned ears pro ecting from each edge of the split and adapted to be attached together by a clamping screw 17. The sleeve 16 is provided with a downwardly projecting offset bracket l7 supporting at its lower end a bifurcated guard 18 into which the needle 14 is adapted to work. guard 18 is provided with a radially extending thread slot 19, on one face thereof, to permit the thread to pass through. The thread slot 19 will enable the thread to be readily introduced into the guard without threading it through the same.

It will be noted that the needle bar axis is in advance of the presser bar axis and for this reason the offset bracket 17 is provided to span the intervening space between the two bars 11 and 12 and align the axis of the guard 18 with the axis of the needle bar 12. The lower portion of the guard 18 is reduced toward its lower end where the diameter is but slightly larger than that of the needle 14. The inner wall of the reduced portion 20 of the guard 18 is provided with a central opening 21 at the extreme lower end, this opening permitting the passage of the needle 14:. The cutaway or bifurcated portions of the body of the guard 18 are provided to accommodate the clampin collar 15 when in its lowered position.

11 the operation of the device the split The lower end of the sleeve 16 is slipped over the presser bar 11 and clamped, by the screw 17, about the bar 11' at a suflicient distance from theend of the latter to permit the lower end 20 of the guard 18 to rest upon the split toe of the presser foot 13. The central opening 21 of the guard 18 will be aligned with the axis of the needle to permit the reciprocation of the latter through said opening. The raising of the presser bar 11 and foot 13 will also raise the guard 18 whereby the end of the needle will be exposed for threading or adjustment.

The reduced portion 20 of the guard 18 protects the fingers of the operator as shown in Fig. 1, but doesnot obstruct the "view of the oods worked upon, chiefly because at a point where the needle enters the goods the diameter of the guard is but slightly laiiger than that of the needle.

- claim 1. A needle guard attachment for sewing machines, comprising a split sleeve adapted to be clamped to the upper exposed portion of a presser footrod, a bracket projecting downwardly from said sleeve, a bifurcated guard member carried by the lower end of said bracket and adapted to surround the needle, and a conical terminal at the lower end of said guard and having a central opening therein through which said needle is adapted to pass, said conical terminal having a thread slot therein through which the thread is'permitted' to pass.

2. A needle guard attachment for sewing machines, comprising a sleeve clamped to the presser foot rod, and having a dependin offset bracket forming "a part thereof, a burcated guard carried by the lower end 015 said bracket and having a lower end reduced with respect to the upper portion of the guard and adapted to rest upon the presser foot, and a central opening in said reduced end of the guard permitting-the vertic/ally reciprocating needle to pass therethrough.

In testimony whereof I have afiixed my signature. v

JOSEPH OHERTOK.

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