US1025463A - Stay-guide for sewing-machines. - Google Patents

Description

C. F. GRAY. STAY GUIDE FOR SEWING MACHINES.

APPLIOATION FILED JAILzl, 1910.

1,025,463.' A Patented May 7, 1912.

v /NVENTR cazzej I BY ATTHNE Y CLUMBI WMV C0. WASHINGTON. D. C.

UNITED STATES PATENT OFFICE.

CHARLES FREDERICK GRAY, OF SIERRA MADRE, CALIFORNIA, y'ASSIGrNOR TO THE SINGER MANUFACTURING G01V.CEANY,` A CORPORATION OF NEW JERSEY.

STAY-GUIDE FOR SEWING-MACHINES.

Specification of Letters Patent.

Patented May 7, 1912.

Application I led January 21, 1910. Serial No. 539,277.

To all whom it may concern:

Be it known that I, CHARLES FREDERICK GRAY, a citizen of the United' States, residing at Sierra Madre, in' the county of Los Angeles and State of California, have in-.

vented certain new and useful AImprovements in Stay-Guides for Sewing-Viaclnnes, of which the following 1s a specification,

reference being had therein to the accompascribed as used' for seaming together shoe` eyelet stays, it will be readily understood that the invention is not limited: in this respect.

Referring to the accompanying drawings, in the several figures of which like parts are similarly designated, Figure 1 is a perspective view of the improved guide, together with so much of the bed-plate, overhanging arm and cloth-presser mechanism of a well understood form of commercial zigzag sewing machine as is deemed necessary for a proper understanding of the invention. Fig. 2 is a perspective view of the guide, the cover plate being removed to better illustrate the spring control of the stay-guide bar. Fig. 3 is a longitudinal vertical section of the guide taken on a line at one side of the stay-guide bar spring. Fig. 4 is a detail perspective view of the feed-dog. Fig. 5 is a view of a shoe eyelet stay having its abutting edges secured together by suitable zigzag or cross stitches.

l illustrates the bed-plate of the sewing machine, 2 the overhanging arm, 3 the front and 4 the back cloth-plate, 5 the throatplate, 6 the needle-bar carrying the eye*- pointed needle 7, 8 the feed-dog, 9 the clothpresser and 10the frame connecting said cloth-presser with the presser-bar 11, all of which parts are of common construction and may be as herein pointed out or of any approved form.

The stay-guide bar comprises a main member 12 provided with a cross-bar 13 upon which the material rests as it is advanced to the action of the feeding mechanism, said bar being provided with a projecting' blade or separator 14 which is located centrally between the free ends of the arms 15 andV 16 comprising the vcross-bar 13. The member 12 is mounted to slide in a suitable guide-way 17 formed in the frameplate 18 which is secured by screw 19 to the bed-plate 1. Formed in the member 12 is an opening 20 in which is located a spring 21. One end of said spring rests against the inner wall of the end portion 22 of the member' 12 and' the opposite end abut against a lug 23 carried by the frame-plate 18, thus resiliently holding the stay-guide bar in its retracted position or its position farthest from the needle.

24 represents a pin secured to the underside of the endV portion 22 of the member 12l and projecting intoV a slot 25 formed in the frame-plate 18, said slot being of the required length to properly limit the movements of the stay-guide bar in opposite directions.

26 is ay cover plate secured by screw 27 to the frame-plate 18. While the employment of the spring 21 is desirable it is not essential to the practical working of the stayguides, it being evident that the operator could return the member 12 without materially interfering' with the neXt subsequent operation.

The feed-dog 8 is provided with the usual serrated feed-points 28 and 29, and the cloth-presser 9 with the commonly employed toe portions 30 and 31, and to better accommodate the relative action of the stay-guide bar and feed-dog, the arms 15 and 16 are cut away on opposite sides of the blade or separator 14 as shown at 32 and 33.

In the operation of the device, the stay pieces 34 and 35 are positioned by the operator, as shown in Fig. 1, with their lower longitudinal edges in Contactv with the throat-plate and their abutting edges on opposite sides of and resting against the separatorV 14, the operator at the same time holding the respective stay pieces pressed into the surfaces 36 and 37 which are preferably, but not essentially, concave in form. After having adjusted the stay pieces as pointed out, the opera-tor advances the stay-guide bar, in opposition to the resiliency of the spring 21, a distance suiiicientto cause the stay pieces to be placed in operative relationship with their respective feed-points and by the latter advanced to the needle actuation, or until the pin 24E reaches its limit of movement in the slot 25, following which the spring 21 is permitted to return the stay-guide bar to its retracted or normal position for eifecting the succeeding operation.

As `the improved guide is applicable to many well known forms of machines which effect a zigzag or cross stitch, it has not been deemed necessary to illustrate or describe the mechanism employed for giving to the needle its lateral or zigag movements or that for giving to the feed-dog its feeding movements.

What I claim is 1. In a stay guide for sewing machines, a guide-way secured on the bed-plate of the sewing machine, a main member mounted in said guide way and provided with material engaging surfaces and a separator, said material engaging surfaces and separator acting to register the abutting edges of said material in the same plane as they are advanced to the action of the stitch forming mechanism, said main member being free to be moved, at the will of the operator and during the stitching operation, into and out of effective relationship with said stitch forming mechanism.

2. In a stay-guide for sewing machines, an adjustable main member having movements in directions corresponding substantially with the line of seam formation, a feed-dog, a material-carrying bar carried by said member and provided with an inclined concaved surface, and a separator against which the abutting edges of the materials rest as they are being advanced to the act-ion of the feed-dog.

3. In a stay guide for sewing machines, a

4feed-dog, a main member mounted on the bed plate of the sewing machine and provided with a separator and material engaging surfaces, the latter cut away on opposite sides of said separator to accommodate the movements of said feed-dog, said main member being free to be moved, at the will of the operator and durin the stitching operation, into and out of e ective relationship with the stitch forming mechanism of the sewing machine.

4.-. In a stay guide for sewing machines, a feed dog, a main member mounted on the bed plate of the sewing machine and provided with a separator and material engaging surfaces, the latter cut away on opposite sides of said separator to accommodate the movements of said feed-dog, said main member being free to be moved, at the will of the operator and durinff the stitching operation, into and out of efective relationship with the stitch forming mechanism of the sewing Copies of this patent may be obtained for machine, and means for limiting the oppositely arranged movements of said main member.

5. In a stay-guide for sewing machines, an adjustable main member having oppositely directed movements in a line corresponding substantially with the line of seam formation, resilient means for holding said member in its retracted posit-ion, a feed-dog, and a material-carrying bar carried by said member 'and provided with a separator against which the abutting edges of the materials rest as they are being advanced to the action of said feed-dog.

6. In a stay-guide for sewing machines, a guideway mounted on the bed-plate of thc sewing machine, a main member mounted in said guide-way free to be moved by the operator in a direction corresponding substantially with the line of seam formation and resiliently held' in its retracted position, a feed-dog, and a material-carryingbar carried by said member and provided with a separator against which the abutting edges of the materials rest as they are being advanced to the action of said feed-dog.

7 In a stay-guide for sewing machines, a frame mounted on the bed-plate of the sewing machine, a main member mounted in said frame and having oppositely directed movements in a line corresponding substantially with the line of seam formation, a spring for holding said member in its retracted position, a feed-dog, and a materialcarrying bar carried by said member and provided with a separator against which the abutting edges of the materials rest as they are being advanced to the action of said feed-dog.

8. In a stay-guide for sewing machines, a frame mounted on the bed-plate of the sewing machine, an adjustable main member mounted in said frame and resiliently held in its retract-ed position, means for limiting the movements of said member, a feed-dog, a material-carrying bar carried by said member and provided with an inclined concaved surface, and a separator carried by said bar against which the abutting edges of the materials rest as they are being advanced to the action of said feed-dog, said main member, material-carrying bar and separator having movements in directions substantially in line with the seam formation.

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

CHARLES FREDERICK GRAY.

Witnesses W. R. ABERCROMBIE, ABBIE M. DONIHU.

ve cents each, by addressing the Commissioner of Patents, Washington, D. C.

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