US2130266A - Foot feed attachment for sewing machines - Google Patents

Description

p 1938. H. B; CONNER El AL 2,130,266

FOOT FEED A' TACHMENT FOR SEWING MACHINES Filed June 28, 1937 Hugh 1?. define/r flrbhur OZ 3077/ INVENTOR ATTORN EV Patented Sept. 13, 1938 UNITED STATES PATENT. OFFICE.

FOOT FEED ATTACHMENT FOR SEWING MACHINES Hugh B. Conner and Arthur Olson, Osage, Iowa Application June 28, 1937', Serial No. 150,876

3 Claims. (01. 112-239) This invention relates to foot feed attachments for sewing machines and has for an object to provide a high lift mechanism which will permit thick boot counters to be sewed as easily as thin counters, and which will permit reverse seams to be sewed in leather jackets and coats.

A further object of the invention is to provide a high lift foot feed attachment which will not permit the needle to be pushed out of alignment, or material to lag, as the case may be thereby preventing thread breaks.

A further object of the invention is to provide a device of this character which may be readily substituted for the conventional lift attachment by unskilled persons in approximately one minute and without the use of tools.

A further object is to provide a device of this character which will be formed of a few strong simple and durable parts, which will be inexpensive to manufacture, and which will not easily get out of order.

With the above and other objects in view the invention consists of certain novel details of construction and combinations of parts hereinafter fully described and claimed, it being understood that various modifications may be resorted to within the scope of the appended claims without departing from the spirit or sacrificing any of the advantages of the invention.

In the accompanying drawing forming part of this specification,

Figure 1 is a fragmentary side elevation of a sewing machine with a high lift foot feed applied thereto and constructed in accordance with the invention.

Figure 2 is an enlarged side elevation of the attachment showing the compensator block in normal position to permit the presser foot to lift sufficiently to operate upon goods of a predetermined thickness.

Figure 3 is a View similar to Figure 2 but showing the compensator block rotated through an angle of 90 degrees to elevate the actuating rod about $2 of an inch higher than when the block is in the position shown in Figure 2 to permit the machine operating upon goods of a greater thickness.

Figure 4 is a front elevation of the attachment removed from the machine.

Figure 5 is a detail perspective view of the compensator block.

Referring now to the drawing in which like characters of reference designate similar parts in the various views, In designates a conventional type of sewing machine having an operating lever H for imparting movement to the needle bar [2. A presser foot I3 is operated in the usual manner by mechanism of the machine (not shown). The presser foot is raised by the customary lever I4 so that goods may be placed under the presser foot.

To permit the presser foot being raised higher than ordinarily by the conventional actuating bar I5 a bracket-like main frame I6 is provided with a slot I1, best shown in Figure 4, to receive the actuating bar l5 and an actuating bar clamp plate i8 is removably secured in position to secure the main frame to the actuating bar by means of a screw [9 passed through the plate and into the main frame.

A Slot 20 is formed in the bottom of the main frame to receive a compensator block 2| which is substantially rectangular in contour and is rounded at one corner as shown at 22 in Figure 3.

The block is provided with an opening 23 and a shaft 24 is passed through registering openings 25 in the main frame, and through the opening 23 of the block. The block is pinned to the shaft to be moved as a unit therewith by a pin 26. A hand control wheel 2'! is fixed to the shaft.

The compensator block is so mounted on the shaft that the shaft is disposed nearer one end of the block than the other end of the block. The hand control wheel 2'! may be turned in one direction to dispose the block to extend with its long median line parallel with the conventional rock lever 28, as best shown in Figure 2, or may be turned from this position through an angle of degrees to dispose the long diameter of the block perpendicular tothe rock lever 28, as best shown in Figure 3. In the latter position the block will space the actuating bar I5 approximately of an inch higher from the rock lever than in the former position so that the presser foot will be raised to receive thick work such as boot counters, leather jackets, coats and other goods.

From the above description it is thought that the construction and operation of the invention will be fully understood without further explanation.

What is claimed is:

1.- In a sewing machine, the combination with the presser foot actuating bar, of a member connected to the bar, a compensator block revolubly mounted on the member, said block having a long longitudinal median line and a short transverse median line, a grip connected to the block for manually turning the block to dispose the same with its long median line extending either vertically or horizontally, and a driven lever for actuating the presser foot engageable with the block in either of its adjusted positions. 7 2. In a sewing machine, comprising the combination with the presser foot actuating bar, of a bracket-like main frame removably secured to the bar, a manually revoluble shaft carried by the frame, there being a slot in the bottom of the frame through which said shaft passes, a compensator block of substantially rectangular contour and rounded at one corner fixed to the shaft in the slot, said shaft passing through said block nearer one end of the block than the other end of the block whereby the shaft may be rotated through an angle of 90 degrees to dispose the block with its long median diameter selectively, horizontally or vertically, and a driven lever for actuating the presser foot engageable with the block in either of its adjusted positions.

3. In a sewing machine, comprising the combination with the presser foot actuating bar, of a bracket-like main frame provided with a lateral slot to receive the bar, a clamp plate on the frame securing the frame to the bar, there being a slot formed in the bottom of the frame, a compensator block of substantially rectangular contour received in said slot having a long longitudinal median line and a short transverse median line, a shaft revolubly mounted in the frame and fixed to the block near one end of the block for rotating the block through an angle of 90 degrees to dispose selectively the long median line of the block in horizontal or in vertical position, and a driven lever for actuating the presser foot engageable with the block in either of its adjusted positions.

HUGH B. CONNER. ARTHUR OLSON.

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