US541492A

US541492A - Needle-guard for sewing-machines

Info

Publication number: US541492A
Authority: US
Publication date: 1895-06-25
Anticipated expiration: 1912-06-25

Description

(No Model.)

L. MUTHER. NEEDLE GUARD EoE SEWING MAGHINES-v No. 541,492. Patented June 25,- 1895.

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UNITE STATES PATENT OFFioE.

LORENZ MUTHER, OF OAK-PARK, ASSIGNOR TO THE UNION SPECIAL SEW- ING MACHINE COMPANY, OF CHICAGO, ILLINOIS. I

NEEDLE-GUARD FOR SPECIFICATION forming part of Letters Patent No. 541,492, dated J une 25, 1895.

Application filed Jul 11,1893.

To all whom it may concern:

Be it known that I, LORENZ MUTHER, a citizen of the United States, residing at Oak Park, in the county of Cook, State of Illinois, have invented certain 'new and useful Improvements in Needle-Guards, of which the following is a description, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

My invention relates to improvements in sewing machines, and particularly to means for preventing the needles from being sprung into the path of the loopers.

The invention therefore consists in the mat ters hereinafter described and referred to in the appended claims. I a

In the accompanying drawings, which illustrate my invention, Figure 1 is a perspective view showing the loopers and guard and in dotted lines the guard-finger traveling with the loopers. Fig. 2 is a perspective showing the throat-plate and guard from the under side. Fig. 3 is a plan, and Fig. 4 a bottom plan, of the throat-plate provided with my in; vention.

In the drawings, A represents the throat plate of a sewing machine, B a portion of the needle bar, and a a the needles,'herein shown as two in number and arranged obliquely to each other respecting the line of feed. The throat plate is provided with the ordinary Screw holes for attaching it to the machine, and has openings b and c for the passage of the side feed dogs and needles respectively. Upon the under side of the throat plate is a longitudinal slot d in which slot is secured the shank of the needle guard O by means of the screw D passing through from the outside. of the throat plate into said shank. That part of the guard O which acts as a guide for the needles is shown at e, being arranged below the plane of the shank and extending at right angles to the shank and into the path of the needles. It is beveled or chamfered on one side as shown at f, and is cut away at the end so as to leave a narrow, chamfered, projecting point 9. The parts f and g serve to guide the outer and inner needles respect- Serial No. 480,161. (NomodeL) ively, said inner needle in descending striking on the inclined sides of said guard and being thereby deflected in an opposite direction to that in which the feed of the machine is going, thus avoiding interference with the loopers E in their forward movement, one of said loopers passing between the two needles while the 5 5 other passes outside the same. A guard finger traveling with the loopers, shown in dotted lines in Fig. 1, serves the usual purpose of such fingers. The loopers are operated in the usual way, as shown in Fig. 1.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a sewing machine the combination with a feeding device having feeding movement in a defined path, of a plurality of vertically reciprocating needles disposed in a vertical plane at an oblique angle to the path of feed, a needle guard located between the needles and the forward limit of the feed path and having a pluralityof needle deflecting surfaces disposed respectively in the path of movement of the needles, said surfaces being arranged substantially in parallelism in vertical, oblique planes, and complemental 7 5 stitch forming mechanism; substantially as described.

2. In a sewing machine and in combination with the stitch forming mechanism thereof, comprising a'plurality of needles and a plu- 8o rality of loopers, of a guard plate having a plurality of deflecting surfaces, the latter being located respectively in the path of the needles, and a pair of surfaces being arranged relatively substantially in parallelism in vertically oblique planes, and the lateral extent of the surfaces beginning in a vertical plane between two of the needles and tending in opposite directions; substantially as. described.

, In testimony whereof I affix my signature 0 in presence of two witnesses.

LORENZ MUTHER.

Witnesses: I

W. S. NORTH, CHESTER MoNEIL.