US2065031A - Sewing machine needle guard - Google Patents

Description

Dec. 22, 1936. v M. B. sKLAR 2,055,031

SEWING MACHINE NEEDLE-GUARD A Filed June 4, 193e Patented Dec. 22, 1936 UNITED STATES PATENT oFFlcE SEWING MACHINE NEEDLE GUARD Maxwell B. Sklar, Brooklyn, N. Y.

Application June 4, 1936, Serial No. 83,433

2 Claims. (Cl. 112-261) One object of this invention is the provision of an improvement in sewing machines, more particularly a guard for the needle of the machine to prevent accidental contact of the n- Y gers of an operator with the descending needle.

The guard also serves other purposes, among which may be mentioned that it prevents the cloth being operated upon, especially linings, from turning over on top of the presser bar foot and thus getting caught in the foot.

Another object of the invention is the provision of such a guard having its front portion hingedly mounted on the extremity of the presser bar foot, so that it may be readily rotated into position where free access to the needle may be had for the purpose of threading the needle and other purposes.

A still further object is the provision of means for releasably locking the forward section of the guard in either upright or extended position.

The above and other objects will become apparent in the description below, in which characters of reference refer to like-named parts in the accompanying drawing.

Referring briefly to the drawing, Figure 1 is a side view of a portion of a sewing machine, illustrating the application of the guard thereto.

Figure 2 is a front view of Figure 1.

Figure 3 is a rear view of Figure l.

Figure 4 is a cross-sectional View taken on the line 4-4 of Figure 3, with a fragment of cloth shown in the machine.

Figure 5 is a side elevational view of a modified form of guide, and the presser bar foot on which it is mounted.

Figure 6 is a cross-sectional view of the modified form, taken on the line 6-6 of Figure 7.

Figure '7 is a cross-sectional view taken on the line 'I-I of Figure 6.

vReferring in detail to the drawing, the numeral I indicates the lower end of the sewing machine head from which the presser bar I I descends, and also the needle bar I2 in which the needle I3 is secured. The presser bar II is provided with a yoke I4 at its lower end in which the slotted upper end I of the foot I6 is adjustably mounted by means of a thumb screw I'I. The foot I6 comprises the upright arm I8 and the horizontal forked base I9, the slotted-upper end I5 being joined to the upright arm I8 by the web 20. The base I9 is provided with a short prong 2| and a long prong 22 separated by a slot 23. The guard 24 comprises a unitary member of thin or sheet metal having a. side wall 25 secured along its edge 26 to the arm I8 and along its lower edge 21 to the base I9. The guard 24 is secured to these members of the foot I6 by soldering, welding, or in any other desired manner. The side wall 25 is provided with a right-angled extension wall 28, integra-l therewith. This front wall 28 is provided at its end with an arcuate tongue 29. A substantially oval opening 30 is cut out of the front wall 28 and extends through a portion of the arcuate tongue 29. A vertical line 3| is drawn at the base of the oval opening 30 directly in line with the needle I3, when viewed from the front. This line is provided by painting, etching, or in any other desirable manner, and serves to indicate to the operator the position of the lower tip of the needle I3, since the latter descends below the base of the opening 30. The cloth 32 lies below the base I9 of the foot I6. When the operator guides the cloth through the machine, his fingers approach close to the foot I6, and the guard 24 shields his n- 20 gers from accidental contact with the descending needle in a manner which is obvious.

In the modified form shown in Figures 5, 6, and '7, the presser bar foot I6 is the same as that shown in the previously described gures. The guard 33 is formed of two sections 34 and 35. The section 34 is secured to the arm I8 and the base I9 in the same manner as the entire guard 24 is secured in the previously described gures. The section 35 is provided with a side wall 36 having its lower edge 31 formed of the same contour as the upper edge 38 of the section 34 so that they complement each other when the section 35 is in raised or upright position, as shown in Figure 6, and thus form a continuous side wall for the guard. The base I9 is similarly provided with a short prong 2| and a long prong 22. The latter, however, has on its ends a pair of ears 39 in which a pin or shaft 40 is rigidly held, The section 35 of the guard 33 has its side wall 36 provided with a front extension wall 4I substantially similar to the front wall 28 of the guard 24. The front wall 4I is also provided with a substantially oval opening 30 and an upper arcuate tongue 29. The lower extremity of the front wall 2| is rolled loosely about the pin 40 in the form of a sleeve 42. The upper surface of the sleeve 42 (Figure 6) is attened to provide a flat edge 43, and at right angles thereto a similarly flattened surface 41 is provided. A spring 44 is secured at its rear end 45 to the top of the base I9 by soldering, welding, or in any other desirable manner, near the side walls of the guard. Its outer end 46 extends over the sleeve 42.

When the guard section 35 is in upright position 55 with its side wall closed, the tip 46 of the spring 44 lies flush against the flat edge 43 of the sleeves 42 and thus serves to releasably lock the section in upright position. To rotate the latter into the position shown in broken lines in Figure 6, the tongue 29 is pushed forward and when the section 35 is swung outward through an arc of approximately degrees, the flat surface 41 of the sleeve 42 will lie flat under the spring end 46 and thus the guard section `35 will be releas ably locked in its extended or open position. In the latter position, the guard permits complete observation of the lower end of the needle I3 and;v .Y

Obviously, modifications in form and structure may be made without departingvfrom the'spiritv and scope of the invention.

I claim:

Y l. In combination with a sewing machine presser bar foot having a vertical arm and a base at right angles to said arm, a wall secured to the sides of said arm and base, a member comprising a side wall and a front wall at right angles thereto having its front Wall hingedly secured on the outer extremity of said base, said front wall being adapted to be rotated into substantially Vertical position, said side walls coming into contact with each other when said Wall is in verticalV p0- sition to provide a closed side Wallfformed of saidtw'o side walls, said front wall when rotated outwardly from said vertical position removing its side wall from contact with said iirst named wall and giving access to the upper surface of said base from said side, said front wall having a cut out opening therein, and means for releasably locking said front wall in either of said two positions.

2. In combination with a sewing machine presser bar foot having a vertical arm and a base at' right angles to said arm, a wall secured to the sides of said arm and base, a member comprising a side wall and a, front wallr at right-angles thereto having its front wall hin'gedly secured on the outer extremity of said base, said front wall being adapted to be rotated into substantially vertical position, said side walls coming into contact l withv each other when said wall is in vertical po- ,g sition to provide a closed side wall formed of said two sidewalls, said front wall when rotated outwardly fromfsaidlvertical position removing its side Wall from contact with said iirst-named wall and lgiving access to the upper surface of said base; said front wall havingl an opening therein, means for' locking said front wall in either of said' two positions, said means comprising a pin on the end of said base, a sleeve on the lower end of said front wall surrounding said pin, said sleeve having a pair of at surfaces substantially at right angles to eachother, a springnger'secured at one end of saidbase and having its other end projecting over .said sleeve, said other end of said spring lying flush against one of said flatv edges whenM said fron-t' Wall is in upright position. and against the other of saidat edges when the front wall is in extended'position. f

' MAXWELL B. SKLAR.`

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