US673719A - Welt-guide for sewing-machines. - Google Patents

Description

N0. 573,7l9. Patontad May 7, l9ol. H MARSHALL WELT GUIDE FOR SEWING MACHINES.

(Application filed Aug. 18, 1900.)

(lo Iodel.)

pnms PETERS ca. Pucmmm. wanmofon u UNITED STATES PATENT OFFICE.

HECTOR MARSHALL, OF PORT MELBOURNE, VICTORIA.

WELT-*GUIDE FOR SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 673,719, dated May 7, 1901.

Application filed August 18, 1900. Serial No. 27,309. (No model.)

To all whom, it 11mg concern:

Be it known that I, HECTOR MARSHALL, boot and shoe architect, a subject of the Queen of Great Britain and Ireland, residing at 227 Bay street, Port Melbourne, in the county of Bourke, Colony of Victoria, have invented certain new and useful Improvements in Welt-Guides for Sewing-Machines, of which the following is a specification. I

The object of myinvention is to provide an attachment for boot and shoe sewing machines whereby the welt-strip may be guided and stitched to the upper and the insole. In the past it has frequently been the practice in the manufacture of boots and shoes first to pull over the upper onto the insole on the last, then to place the upper, insole, and last in a lasting-machine, which further strained the upper over and tacked it. Then by hand the upper was braced or stitched preparatory to its being placed in the Welting-machine, which stitched the upper, the welt, and the insole together; but with my invention the upper is pulled over the toe only of the last, and three or more club-headed tacks withdrawable by hand are driven in. Then Without passing through the lasting-machine the upper, insole, and last are placed in front of an ordinary sewing-machine, (having a vertical straight needle,) to which my welt-guiding attachment is affixed.

My invention consists of awelt-strip guide, as hereinafter described, secured to the rest of a straight-needle ordinary boot and shoe sewing machine. By it the welt-strip is led into the machine and secured to theinsole and the upper, and thereby wetted and lasted in the one operation. A thrust step or shoulder protrudes above the bottom of the weltguiding hole, and a means is provided for adj usting said hole to varying widths of welt.

Referring to the drawings which form a part of this specification, Figure 1 represents a front viewof a sewing-machine with my attachment in place. An arrow shows where the welt enters, and the needle, almost at the top of its stroke, is visible above the needlehole. The awl is also in view. The widthadjusting piece is removed. Fig. 2 shows a erspective View of my guide detached from e rest and looked at from above it. The row indicates the direction of the entering welt-strip. Fig. 3 represents a perspective view of the guide looked at from the end where the welt-strip enters the welt-strip hole. The adj usting piece, by which the said hole is made to accommodate welts of different widths, is clearly seen. Fig. 4 shows a view of the width-adjusting piece, which is inserted in the welt-strip-guiding hole. Fig. 5 represents a perspective view of a short piece of the welt-strip.

Similar letters of reference indicate similar or corresponding parts where they occur in the several views.

On reference to the drawings it will be seen that a holder A of any section is secured. by screws, bolts, studs, or other means to (or it may be part of) the rest B. Integral with the holder or attached thereto is the extension or head 0. Penetrating this extension is the elongated needle-hole D. Through this hole passes the needle L, above which is the awl K. A thrust step or shoulder E (against which the boot can be thrust while being sewed) traverses the upper face of the extension, and passing from the top of this step across the extension is the sheet-metal bridgepiece F. Oneside of this bridge-piece rests upon and is secured to the top of the step or shoulder E and the other (by a flange J) is secured to the side of the extension. The bridge-piece is attached to the extension by screws or other means and forms with the said extension the walls of the hole through which the Welt-strip passes. Inside the weltstrip-guiding hole H (see Fig. 3) in the guide is a width-adjusting piece G. This, which is locked in place in any convenient manner, can be removed at will and replaced by those of other size.

I do not bind myself to the particular means described of adjusting the width of the weltstrip hole in the guide, sincethe making-up pieces may be dispensed with and other means adopted to effect this adjustment.

The cycle of operations is as follows: The leading end of a Welt-strip of the desired width having been entered into the guide the said end is so far pushed through that the needle-point will pierce it. The embryo boot (the upper of which has been pulled over and locked by fingerwithdrawal tacks) is then placed above the needle. Thus after the awl penetrates the three plies of material and as the boot travels around in front of the needle the tacks before referred to are removed by the operator and dropped into a tray. The

operation is performed not only with ease,

but also with both accuracy and despatch, and a joint is made which is absolutely perfect in every particular.

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

1. A Welt-strip guide consisting of a holder, having a curved extension or head at one end, a needle-hole through said head, a thrust step or shoulder extending beside and beyond said hole, and a bridge having one end securely fastened to the said step and the other end securely fastened to the opposite side of the head and forming with the opposed faces of the head a Welt-guide opening in advance of the needle-opening, all as and for the purposes described.

posite the step, for the purpose and substantially as described.

In Witness whereof I have hereunto set my hand to this specification in the presence of two Witnesses.

HECTOR MARSHALL.

Witnesses:

EDWIN PHILLIPS, CECIL M. PLASTRIER.

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