US686286A - Presser-foot holder for sewing-machines. - Google Patents

Description

N0. 686,286. Patented NOV. I2, 1901.

' J. M. GREIST.

PBESSER FOOT HOLDER FOR SEWING MACHINES.

{Application filed Mar. 14, 1901.)

(ModeL) nron.

JOHN M. GREIST, OF NEW HAVEN, CONNECTICUT.

PRESSER-FOOT HOLDER FOR SEWING-=MACHINES.

SPECIFICATION forming part of Letters Patent. No. 686,286, dated November 12, 1901.

Application filed March 14, 1901. Serial No. 51.056. (ModeL) To all 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 Presser-Foot Holders for Sewing-Machines, 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 the sewingmachine, whether the said presser-foot be an ordinary presser-foot or whether it be an attachment presser-foot, such as is used in connection with hem mers, binders, rufflers, tuck-markers, and the like. To this end the improved presser-foot holder comprises a socket piece or block which is secured, preferably by ascrew, to the lower end of the presser-bar and which is recessed in a peculiar manner to receive the shank portion of the presser-foot or presser-foot attachment. Thesocketpieceorblockreferred to is provided in its front face with a suitable recess, the sides and top of which are bounded by an undercut groove to receive a flat shank portion of the presser-foot, the

front walls of said grooves being notched or.

of the said block and then either by lifting the foot or lowering the presser-bar securely attach the foot in working position, all as will hereinafter be more fully explained.

In the accompanying drawings, Figure 1 is a front side View 'of a .presser-foot with the new socket piece or block secured thereto and the presser-foot in position in said socket piece or block, the front portion of the presserfoot being removed for clearness of illustration. Fig. 2 is a front side view of the presserbar and socket-piece with the presser-foot removed; and Fig. 3 is a detail View of the presser-foot with the toe portion cut away, as in Fig. 1. Fig. 4 is a sideview of the presserbar and socket-block with the presser-foot in working position, and Fig. 5 is a rear side View of the same with a portion of the socketblock cut away. Fig. 6 is a detail bottom view of the socket-block and presser-bar, and Fig. 7 a central vertical section of the socket-block.

Referring to the drawings, a denotes a presser-bar, and b a socketblock attached to the lower end thereof by a screw 0 passing through the reduced lower end of the presserbar received in the groove in the side of said socket-block. The socket-block b is provided in its front face with a flat recess, the sides of which are undercut to form overhanging flanges d, partly cut away about midway of their height to provide notches e in said flanges. The undercut groove forming the flanges d is preferably slightly dovetailed in cross-section throughout its extent both at the sides and top of the recess referred to, said recess being open atits bottom and closed at its top. The socket-block Z) is provided with a vertical slit f, forming a slightly-yielding wing g on one side of said block.

The presserfoot h is provided with avertical shank portion t, the opposite sides of which are notched, leaving above thenotches in the sides of the said shank projections of such dimensions that said projections can pass by the notches e in the flanges d in inserting the said shank flatwise, by a horizontal or tilting movement, into the socket formed in the front face of the socket-block h.

The wing g is joined to the body of the socket-blockby a screw on turning loosely in the body of said block and tapped in the said wing, so that by turning said screw the wing may be sprung or adjusted slightly in order to make the presser-foot fit in its socket with the desired degree of tightness, so as to obviate the necessity of making such a perfect fit of the presserfoot in its socket in the construction of the parts, as would otherwise be.

necessary. The screw m also serves to brace or stiffen the wing g against such side strain as is liable to occur with presser-foot attachments, such as tuck-markers, which are extended laterally to the right a considerable distance and which therefore impose considerable side strain on the presser-foot.

With the parts constructed as above described and with the presser-foot in the position which it ordinarily occupies when it has been raised by the usual presser-foot lifter a presser-t'oot may be inserted in the socketblock simply by bringing the projections 70 on the side of the upper portion of the vertical fiat shank of the presser-foot into regis ter with the notches e in the flanges d at the sides of the socket in the front of the presser foot, and thereby entering the shank of the presser-foot into its socket, either by a tilting or horizontal movement, after which the presser-foot can be slipped upward to the position shown in Fig. 1 or may be brought into such position by lowering the presser-bar and the socket-block attached thereto. Owing to the slightly-dovetailed form of the groove bounding the socket in the piece or blockb the upward movement of the presser foot relative to the socket-block or the downward movement of the socket-block relative to the presser-foot will force the top of the flat shank portion of the presser-foot into the dovetailed groove at the top of the socket in such a manner as to cause it to wedge therein slightly with sufficient friction to hold it firmly in place, but without such a positive hold on said shank as will prevent the presserfoot from being readily removed, so that to remove the presser-foot when the presserbar has been lifted it is only necessary to press down slightly on the presser-foot to bring the projections 7t at the sides of the vertical shank portion of the presser-foot into register with the notches 6, when the presserfoot can be removed by tilting it forward slightly or bya straight horizontal movement. From the foregoing it will be understood that I provide a presser-foot holder of such construction that a prcsser foot can be quickly inserted into or removed from work ing position without requiring the loosening or removal of a screw or even Without requiring movement of the holding-lever, such as has heretofore sometimes been used for securing the presser-foot in place, while at the same time the presser-foot when in working position is firmly held in place without any possibility of its becoming loosened.

Having thus described my invention, I

claim and desire to secure by Letters Patent- 1. A presser-foot-holding device consisting of a socket-block provided with a recess open at its bottom and closed at its top to receive the shank of the presser-foot and which recess is bounded at its sides and top by an undercut groove in the socket-block, combined with a presser-foot having a shank portion adapted to be entered into said recess.

2. A presser-foot-holding device consisting of a socket-block provided With a recess open at its bottom and closed at its top to receive the shank of the presser-foot and which recess is bounded at its sides and top by a dovetailed undercut groove inthe socket-block, combined with a presser-foot having a shank portion adapted to be entered into said recess.

3. A presser-foot-holding device consisting of a socket-block provided with a recess open at its bottom and closed at its top to receive the shank of the presser-foot and which recess is bounded by an undercut groove in the socket-block, combined with a presser-foot having a shank portion adapted to be entered into said recess, the flanges forming the front walls of said recess being notched and the shank of said presser-foot being provided with projections adapted to be passed through said notches in entering the presser-foot into its socket.

4. A presser-foot-holding device consisting of a socket-block provided with a recess open at its bottom and closed at its top to receive the shank of the presser-foot and which recess is bounded by an undercut groove in the socket-block, the said socket-block having a vertical slit f to form a slightly-yielding wing g, and said socket-block being provided with a screw, as m, turning loosely in said socketblock and being threaded in said wing, thus adj ustablyconnecting the latter with the body of said block, combined with a presser-foot having a shank portion adapted to be entered into said recess, the flanges forming the front Walls of said recess being notched and the shank of said presser-foot being provided with projections adapted to be passed through said notches in entering the presser-foot into its socket.

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

JOHN M. GREIST.

Witnesses: 1

P. RAYMOND GREIsT, W. (J. GREIST.

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