US2515585A - Edge guide for sewing machines - Google Patents

Description

July 18, 1950 R. BISIGNANO 5 5 EDGE GUIDE FOR SEWING MACHINES Filed Oct. 21, 1948 INVENTOR. 'RAPFELB BIsIGNANO BY W Patented July 18, 1950 EDGE GUIDE FOR SEWING MACHINES Rafiele Bisignano, Elmhurst, N. Y., assignor of one-half to Florence E. Bisignano, Elmhulst,

Application October 21, 1948, Serial No. 55,694

This invention relates to new and useful improvements in attachments for use in manufacturing an article of footwear, and, more particularly, the aim is to provide a novel and valuable device adapted to be attached to a sewing machine and then for employment in easily and quickly applying a stitch with the line of such stitch always at a uniform distance from a bounding edge of a sole member of the shoe.

The new device, which is exceedingly simple, which nevertheless if readily securable in place on a sewing machine already in use, and which, moreover, is readily adjustable to vary said distance precisely as desired for gauging the distance between the upper and the stitch while the belt is being applied. A feature of the invention is the stark simplicity of the attachment, its-efliciency in action, its low cost of fabrication, and its easy adjustability.

The new attachment comprises merely a gauging tool constituted by a free spinning roller Which at the same time acts to effectuate the attachment as a friction reducing and work eX-' pediting instrumentality; a small bar like member shaped at one end to present a laterally narrowed and upstanding overhang portion for overlying the roller and from which the roller is revolubly suspended; and screw and slot means, the slot whereof may be carried by said member, whereby the attachment may be substantially instantaneously adjustably secured on a sewing machine so as to direct said roller predeterminedly toward the field of reciprocation of the needle.

For further comprehension of the invention, and of the objects and advantages thereof, reference will be had to the following description and accompanying drawings, and to the appended claim in which the various novel features of the invention are more particularly set forth.

In the accompanying drawings forming a material part of this disclosure:

Fig. l is a top plan view of a now favored embodiment of the new attachment, drawn to almost exactly twice actual scale.

Fig. 2 shows the same in side elevation, partially in section at the roller and th roller supporting overhang portion.

Fig. 3 is a bottom plan view thereof.

Fig. 4 is a transverse vertical section, taken on the line 44 of Fig.2.

Fig. 5 illustrates the attachment in use as a speed roller gauge in applying a stitch around a sock lining or insole footwear member.

Referring to the drawings more in detail, the

1 Claim. (Cl. 112-153) aforesaid roller, a tiny cylindrical one which as herein shown has a length equal to about half its diameter, is designated Ill. The aforesaid small bar like member, of somewhat greater length than width and of less thickness than width, is shown at II. This member is of rectangular cross section along the major part of its length, below called its main tang or arm portion l3; and said member at one end is shaped to present a projecting overhang portion l2. Said portion I2 is narrowed laterally of said arm portion I3, is extended centrally thereof, and-is upstanding above the top flat or general plane of the arm portion l3, where the member H is provided with an elongate slot M; the underside of the said overhang portion i2 lying in the same plane with said flat.

In a direction away from the roller ID, the overhang portion i2 is joined to the slot-carrying arm portion it of the member II by an outwardly, rearwardly and downwardly curved rib l5, attended at the top of the member I 2 by a laterally concavely arched longitudinally curved recess 16 which gradually increases in width until it reaches the bottom of the member I I opposite the forward end of a bottom rib ll. Said bottom rib ll, as shown best in Fig. 4, is of the same width as the overhang portion i2, and is attended, at the bottom of the member i I, and on the side of the latter opposite to the side thereof at which the recess I6 is located, by a laterally concavely arched and outwardly, rearwardly, upwardly extending longitudinally curved recess I8. Said recesses l6 and 8 at their ends remote from the roller ll] desirably merge imperceptibly with the member H.

These formations on the small member I I allow the same, as is preferable, to be readily and inexpensively formed of a single integral structure, and provide at the recesses l6 and i8 welt and/or upper fulling and accommodating compartments facilitative of speed and convenient action of the attachment during the laying down of a line of stitching.

The overhang portion [2 is drilled vertically to provide an aperture l9, countersunk at its top as shown in Fig. 2, and a cylindrical stud 20 having at its bottom an integral preferably wafer-thin circular disk head 2| is upset in said countersink as at 22, so as to mount the roller ill with a free rolling fit on the stud 20, and with the lower face of the head 2| flush with the plane of the bottom of th arm portion I3 of the member ll.

Referring to Fig. 5, a well-known type of standard sewing machine is here shown, including a vertically reciprocating needle 23, a work guiding boot 24, and a floor plate 25.

The means for adjustably securing the new attachment in place comprises the aforesaid screw and slot means, of which the slot element is the slot [4 of the member I I, and of which the screw element is a set-screw 25 spirally tightenable in a hole (not shown) drilled and tapped through the floor plate 25.

Thus, with the new attachment arranged as shown in Fig. 5, and with the set-screw 26 tightened to direct and hold the roller l0 exactly as desired relative to the boot 24, a footwear article, such as that indicated at 21, may be rapidly and easily advanced relative to the field of operation of the needle 23, and stitched as indicated at 28, with such line of stitching held at a predetermined uniform spacing from the bounding edge of the shoe component 29 all around the same or all along that portion thereof which is to be thus stitched.

While I have illustrated and described the preferred embodiment of my invention, it is to be understood that I. do not limit myself to the precise construction herein disclosed and the right is reserved to all changes and modifications coming within the scope of the invention as defined in the appended claim.

Having thus, described m invention, what I clai as new and desire to secure by United States 30 Letters Patent is:

In an attachment for the purpose stated having an arm for adjustable attachment to the floor plate of a sewing machine with one end closely adjacent the reciprocating needle of the sewing machine, the arm being formed at the said one end with an overhanging portion having its bottom face spaced above the bottom face of the arm, an apertured roller positioned beneath the bottom face of said overhanging portion, a stud having its top end secured to said overhanging portion said roller being rotatively engaged on said stud, and a wafer-thin circular head formed on the bottom end of said stud and upon which the bottom face of said roller surrounding its aperture rests, said head having its bottom face flush with the bottom face of the arm to rest on the floor plate for reinforcing the overhanging portion of the arm while at the same time supporting said roller raised slightly off the floor plate out of frictional contact therewith.

RAFFELE BISIGNANO.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,026,095 Kimball May 14, 1912 2,229,458 Knott Jan, 21, 1941

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