US747163A - Sewing-machine presser-foot holder. - Google Patents

Description

PATENTED DEC. 15, 1903.

J. GREIST. SEWING MACHINE PRESSER FOOT HOLDER.

APPLICATION I'ILED APR. 14. 1903.

N0 MODEL.

A w M I w [/VVEZTOR:

NORRIS Psrzw co, PNOTOJH'N0" WASHINGYON. a. c.

Patented December 15, 1903.

'PATEN OFFICE.

JOHN M. GREIST, OF NEW HAVEN, CONNECTICUT.

SEWING-MACHINE PRESSER- -FOOT HOLDER.

SPECIFICATION forming part of Letters Patent No. 747,163, dated December 15, 1903.

Application filed April 14, 1903.

T0 at whom, it may concern:

Be it known that I, JOHN M. GREIsT,a citizen of the United States, residing at New Haven, in the county of New Haven and State of Connecticut, have invented certain new and useful Improvements in Sewing-Machine Presser- Foot Holders, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention has for its object to provide a simple device whereby a sewing-machine presser-foot may be conveniently and quickly placed in or removed from working position on a sewing-machine, whether the said foot be an ordinary presser-foot or whether it be an attachment presser-foot such as is used in connection with heinmers, binders, rufflers, tuck-markers, and the like. To this end the presser-bar is provided at its lower end with a flattened face, on which is formed an undercut lug, said bar having a threaded portion above said flattened face for the reception of a clamping-nut, which is cupped or undercut at its lower end. The shank of the presserfoot is provided with a slot or opening to be entered by the said undercut lug on the presser-bar, and said shank is rounded or beveled off at its upper end, so that the outer edges of said end will be lower than the middle portion thereof, to enable the cupped or undercut lower end of the nut to securely hold and properly center the upper end of said shank in clamping the presser-foot in working position, in which the said shank is gripped between said cupped or undercut shoulder of said nut and said undercut lug.

In the accompanying drawings, Figure 1 is a side view of a presser-foot and presser-bar constructed in accordance with the present invention, and Fig. 2 is a front view of the same with the presser-foot and clamping-nut in section. Fig. 3 is a vertical section on line 3 3, Fig. 2; and Fig. l is a front View i1lustrating a slightly-modified form of the invention.

Referring to the drawings, a denotes the presser-bar, provided at its lower end with a flattened face or portion, at the lower part of which is a small lug or projection b, the upper end of which is beveled to form an undercut shoulder. The presser-bar is provided just above its flattened or cut-away portion Serial No. 152604. (No model.)

with a screw-threaded part c, on which fits a nut d, the lower end of which is cupped or undercut, so as to bear firmly against the beveled or rounded upper end of the shank e of the presserfoot f, and which shank is provided with a recess or slot g, entered by the lug b on the presser-bar.

With the parts constructed as above described the presser-foot maybe secured firmly in place on the resser-bar simply by entering the lug b in the slot g and then screwing down the nut 61 against the rounded or beveled upper end of the presser-foot shank,thus

firmly clamping said shank between the cupped or undercut shoulder at the lower end of the said nut and the said undercut shoulder at the upper end of the lug b, and the presserfoot may be conveniently and quickly released simply by loosening or screwing up said out d. When the nut 01 is tightened against the top of the beveled or rounded presser-foot shank, it has a tendency to center the said shank, as well as to secure it in place; but this steadying and centering action may be supplemented, if desired, by providing the presser-bar with a second lug h, entering a slot h at the upper end of the presser-foot shank, as shown in Fig. 4.

The novel construction above described is very simple and cheap to make and enables a presser-foot to-be attached directly to a round presser-bar without the assistance of an interposed block or holder, while the construction is such that it is well adapted to secure a presser-foot to the front side of a presser-bar, so that it can be most conveniently applied or removed.

Having thus described my invention, I claim and desire to secure by Letters Patout-- 1. A presser-foot-holding device consisting of thecombination with a presser-barprovided on its front face with a lug and with a screwthreaded part above said lug, of a vertical resser-foot shank provided with a slot or recess into which said lug may be entered, and a nut fitting the said threaded part of said presser-bar and provided at its lower end with a shoulder to impinge against the said upper end of said presser-foot shank to secure the presser-foot in place.

2. A presser-foot-holding device consisting of the combination with a presserbar prowith an undercut shoulder toimpinge against 10 vided onits front face with a lug having an the said upper end of said presser-foot shank undercut shoulder at its upper end, and with to secure the presser-foot in place.

a screw threaded part above said lug, of a In testimony whereof I affix my signature Vertical presser-foot shank provided with a in presence of two witnesses.

slot or recess into which said lug may be en- JOHN M. GREIST. tered and having a rounded top end, and a Witnesses:

nut fitting the said threaded part of said P. R. GREIST,

presser-bar and provided at its lower end W. G. GREIST.

Images