US2586936A - Universal presser foot for sewing machines - Google Patents

Description

Feb. 26, 1952 M. GOLDSTEIN UNIVERSAL PRESSER FOOT FOR SEWING MACHINES Filed March 16, 1951 m T. m .V m

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Patented Feb. 26, 1952 OFFICE.

UNIVERSAL PRESSER FOOT FOR SEWING MACHINES Murray Goldstein, Scranton, Pa. Application March 16, 1951, Serial No. 215,927

Claims. (01. 112-235) This invention relates to a sewing machine presser foot and more particularly to a variable presser foot which can be changed or adjusted for a large number of different sewing operations.

It is among the objects of the invention to provide an improved presser foot which can be varied'as to width and as to the position of the needle hole or opening therein relative to the width of the presser foot; which may be adjusted to dispose its bottom surface at different levels for special sewing operations and to provide a selected width of bottom surface in each level; which is adjustable for various sewing operations including cording, over raising or piping or braiding with the needle disposed to either the right or the left and zipper sewing with the needle disposed to either the right or left of the zipper, and may be used as an adjustable width swing foot, an adjustable width plain sewing foot, an adjustable width hemming foot and as a seam gauge foot; which may be used with various attachments; which may be mounted on an existing sewing machine with no modification of the sewing machine construction; and which is simple and durable in construction, economical to manufacture, easy to adjust and neat and attractive in appearance.

Other objects and advantages will become apparent from a consideration of the following description and the appended claims in conjunction with the accompanying drawing wherein: Figure 1 is a side elevational view of a presser foot illustrative of the invention shown attached to the lower end of a presser foot bar of a sew ing machine;

Figure 2 is a front elevational view of the presser foot illustrated in Figure 1;

Figure 3 is a cross sectional view on the line 3-3 of Figure 2;

Figure 4 is a cross sectional view on the line 4-4 of Figure 1; and Figure 5 is a fragmentary rear elevational view showing the presser foot adjusted for a particular kind of sewing.

- With continued reference to the drawing the presser foot of the present invention comprises a mounting block II] of channel shape having .side walls II and I2 disposed in parallel and spaced'apart relationship to each other and a top wall I3 extending between the upper edges of the side walls and joined thereto and an end wall I4 at one end of the block, the other end of the block and the bottom side thereof being open. The side and top walls of the block enclose 2 a space of rectangular shape and the end wall I4 is provided on its outer side with a boss I5. and with a tapped hole I6 extending through the end wall and the boss substantially at the mid-width location of the end wall.

A socket I! is provided on the upper side of the top wall I3 and this socket has three walls including side walls I8 and I9 and an end wall 20 disposed substantially perpendicular to the side walls. The three walls of the socket enclose a substantially rectangular space open at its top and at the side thereof remote from the end wall It and the end wall 20 of the socket is provided with a notch 2| extending downwardly from the top edge of this end wall substantially at the mid-width location of the latter.

The socket II receives the squared lower end of the presser foot bar 22 and the notch 2| receives the presser foot attaching screw 23 which is threaded through a tapped hole extending transversely of the bar 22 near the lower'end of the latter and has on one end a head 24 the inner end of which bears against the outer side of the end wall 20 of the socket to clamp this end wall between the screw head and the adjacent side of the presser foot bar and has at its other end a peripherally knurled enlargement 2d providing a knob or thumb wheel by means of which finger pressure can be applied to the screw to firmly clamp the mounting block II] to the lower end of the presser foot bar.

A plurality of flat plates 25 which are L- shaped in plan are disposed in side by side relationship and each of these plates has one of its legs, as indicated at 26 in Figure 3, received in the concavity of the mounting block II! and its other leg, as indicated at 21, disposed below the mounting block and projectin outwardly ofthe front side wall I2 of the mounting block substantially perpendicular to the latter.

The number of the plates 25 may be varied without in any way exceeding the scope of the invention, twelve plates each having a width of approximately one sixteenth of an inch being shown in the drawing to illustrate the invention and these plates are disposed substantially perpendicular to the side walls and the top wall of the mounting block II].

An elongated aperture or slot 28 is provided in the leg 26 of each plate 25, received in the mounting block I0, and these slots register with each other and with the tapped hole I6 in the end wall I4 of the mounting block.

An abutment plate 29 is disposed in the mount- 25 remote from the end wall i4 and is provided with an aperture 30 which registers with the slots 28 in the plates and the tapped hole It in the end wall of the block. A screw 3| extends through the aperture in the abutment plate and through the slots in the L-shaped plates 25 and is threaded at one end into the tapped hole [6 in the end wall M. The head 32 of this screw bears against the outer side of the abutment plate to securely clamp the L-shaped plates 25 between the abutment plate and the end wall It to hold the L-shaped plates in adjusted position in the mounting block.

Two adjacent L-shaped plates, as indicated at 25c and 25b in Figure 2, are provided in their contiguous faces with grooves 33a and 33b which extend transversely of the leg 21 of these plates disposed outside of the mounting block and are located near the distal ends of the corresponding legs of the L-shaped plates. These grooves are complementary and together provide a needle receiving aperture or opening for the sewing machine needle 34.

Plates 25 may be added to or subtracted from the assembly of L-shaped plates to vary the width of the presser foot and the plates 25a and 25b may be shifted in position relative to the other plate to change the position of the needle receiving opening relative to the width of the presser foot. With the screw 3! loosened, some of the plates may be raised relative to the remaining plates to place the bottom edges of the L-shaped'plates in two or more different levels for special work, such as the hemming operation illustrated in Figure 5.

After the proper adjustment of the plates is obtained the screw 3i may be tightened to firmly hold the plates in adjusted position in the mounting block.

The longitudinal edges of the legs 25 of all of the L-shaped plates are held in common planes by the inner surfaces of the side walls H and 12 of the mounting block and the plates are held perpendicular to the top wall of the mounting block'by the endwall l4 and abutment plate 29.

The lower front corners of the legs 21 of the L-shaped plates are rounded off, as indicated at for receiving a presser foot attaching screw, a plurality of L-shaped plates disposed in side by side relationship with one leg of each plate disposed in said mounting block between said front and rear walls, said plates being disposed substantially perpendicular to said front and rear walls and said top wall and each of said plates having a longitudinally extending slot in the leg thereof received in said mounting block, said end wall having a tapped hole therein, an abutment plate disposed in said mounting block at the side of said plurality of L-shaped plates remote-from'said end wall and having an aperture therein registering with the slots in said 35, to provide a runner effect at the front end a of the presser foot and the outer corners of the L-shaped plates are also preferably rounded to avoid sharp edges which might damage the work material or injure the fingers of operators using the presser foot.

' The invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiment is, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by thappended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are, therefore, intended to be embraced therein.

"What is claimed is: p g 1. An adjustable presser foot comprising a channel shaped mounting block having spaced of said block being open, a socket on said top wall for "receiving the lower end of a presser foot bar and having a notch in one side thereof L-shaped plates and the tapped hole in said end wall, and a screw extending through said abutment plate and said L-shaped plates and threaded into the tapped hole in said end wall with its head bearing against the outer side of said abutment plate to secure said L-shaped plates in adjusted position in said mounting block, at least two adjacent L-shaped plates having transversely extending grooves in the contiguous sides-of their legs disposed outside said mounting block which grooves together provide a needle receiving opening through-said presser foot.

2. A sewing machine presser foot comprising a hollow mounting block closed at one end and having a presser foot bar receiving socket projecting outwardly from one side thereof, the other end of said mounting block and the side thereof remote from said socket being open, a plurality of L-shaped flat plates disposed in side by side relationship and each having one leg disposed in said block and extending through the open side of the latter and its other leg projecting laterally from one side of said block substantially perpendicular' thereto, and screw means acting between the closed end of said block and the side of said plurality of L-shaped' plates remote from said closed end firmly clamping said L-shaped'plates in adjusted position in said block.

3. A sewing machine presser foot comprising a hollow mounting block closed at one end and having a presser foot bar receiving socket projecting outwardly from one side thereof, the other end of said mounting block and the side thereof remote from said socket being open, a plurality of L- shaped flat plates disposed in side by side relationship and each having one leg disposed in said block and extending through the open side of the latter'and its other leg projecting laterally from one side of said block substantially perpendicular thereto, and screw means acting between the closed end of said block and the side of saidplurality of L -shaped plates remote from said closed end firmly clamping said L-shapedplates in adjusted position in said block, at least two adjacent plates having transversely extendin grooves in the contiguous sides of said other legs thereof and near the ends of said other legs remote from said block which grooves together constitute a needle opening through the presser foot.

4. A sewing machine presser foot comprising a hollow mounting block closed at one end-and having a presser foot bar receiving socket projecting outwardly from one side'thereof, the other end of said mounting block and the side thereof remote from said socket being open, a plurality of L- shaped flat plates disposed in side by side relationship and'each having one leg disposed in-said block and extending through-the open side of the latter and itsother leg projectin'glaterally from one side ofsaidblocksubstantially perpendicular thereto, and screw means acting between the closed end of said block and the side of said plurality of L-shaped plates remote from said closed end firmly clamping said L-shaped plates in adjusted position in said block, said mounting block having an interior of rectangular shape the opposite sides of which hold the longitudinal edges of the legs of said L-shaped plates received in said block substantially in common planes.

5. A sewing machine presser foot comprising a hollow mounting block closed at one end and having a presser foot bar receiving socket projecting outwardly from one side thereof, the other end of said mounting block and the side thereof remote from said socket being open, a plurality of L-shaped flat plates disposed in side by side relationship and each having one leg disposed in said block and extending through the open side of the latter and its other leg projecting laterally from one side of said block substantially perpendicular thereto, and screw means acting between the closed end of said block and the side of said plurality of L-shaped plates remote from said closed end firmly clamping said L-shaped plates in adjusted position in said block, said mounting block having an interior of rectangular shape the opposite sides of which hold the longitudinal edges of the legs of said L-shaped plates received in said block substantially in common planes, the legs of said L-shaped plates received in said block having mutually registering apertures therein elongated longitudinally of said legs and said mounting block having a tapped hole in the closed end thereof registering with the apertures in said L-shaped plates, and'said screw means comprising a screw extending through the apertures in said L-shaped plates and threaded through the tapped hole in the closed end of said block with its head opposed to the side of said plurality of L-shaped plates remote from the closed end of said block.

MURRAY GOLDSTEIN.

REFERENCES CITED The following references are of record in the

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