US2478073A

US2478073A - Adjustable work gauging and guiding presser foot

Info

Publication number: US2478073A
Application number: US744752A
Authority: US
Inventors: Antonelli Bruno
Original assignee: Individual
Current assignee: Individual
Priority date: 1947-04-29
Filing date: 1947-04-29
Publication date: 1949-08-02
Anticipated expiration: 1966-08-02

Description

Aug. 2, 1949. B. ANTONYELLI 2,478,073

ADJUSTABLE WORK GAUGING AND GUIDING PRESSER FOOT Filed April 29, 1947 Inventor Bruno Anfone/ Ii I0 19 2/ 24 By I I, WWW E Patented Aug. 2, 1949 UNITED STATES PATENT cmce ADJUSTABLE WORK GAUGING AND GUIDING PRESSER FOOT Bruno Antonelli, Fall River, Mass.

Application April 29, 1947, Serial No. 744,752

4 Claims.

My invention relates to improvements in adjustable work-gaging and guiding presser feet for sewing machines of the type in which the presser foot is carried by a presser bar.

The principal object of my invention is to provide a presser foot of simple, eflicient construction equipped for gaging and guiding the work variably relative to the needle to correspondingly place the stitch from the edge of the work when desired, but which is capable of operation in the manner of the usual presser foot, that is, without gaging and guiding when that is unnecessary.

Another object is to provide a presser foot of the character and for the purposes above set forth which is especially adapted to facilitate entering work thereunder and for turning of the work to stitch around corners, all without raising and resetting the presser foot.

Another object is to provide a presser foot equipped for gaging and guiding the work and providing for easy sliding and entrance of the work under the presser foot in a manner to achieve even stitching at the correct distance from the edge of the work without requiring close attention at all times by the operator.

- Other and subordinate objects also comprehended by my invention, together with the precise nature of my improvements, and the advantages thereof, will be readily understood when the succeeding description and claims are read with reference to the drawing accompanying and forming part of this specification.

In said drawing:

Figure 1 is a view in perspective of my improved presser foot in a preferred embodiment thereof;

Figure 2 is a view in plan;

Figure 3 is a view in rear elevation;

Figure 4 is a view partly in side elevation and partly in section;

Figure 5 is a view in vertical section taken on the line 5 5 of Figure 2.

Referring to the drawings by numerals, according to my invention, as illustrated, a presser foot is provided comprising a shank I having a forwardly and downwardly inclined lower end 2, and the usual side channel 3 and side notch 4 for at: taching the shank to the usual presser bar, not shown, of-a sewing machine.

A horizontal guide block ,5, of generally rectangular shape, is provided with a pair of upstanding, laterally spaced, rear edge ears 6 straddling the lower end 2 of the shank I and pivoted thereto by a horizontal pin 7 extending through said ears 6 and said end 2 transversely of the shank l and the said guide block so that the guide block 5 extends forwardly from said lower end 2 and is vertically swingable about an axis transverse to the line of feed of the work, not shown. A bottom stop face 8 on said lower end 2 of the shank l coacts with the top of the guide block 5 to limit upward swinging of said block.

A work-engaging presser foot member 9 of generally rectangular form with the usual round toe end construction is suspended from the guide block 5 for lateralsliding adjustment thereon. For this purpose, said presser foot member 9 is provided with a top, dovetail, cross groove lil therein of flat bottom form, and said block 9 is provided with beveled front and rear edges I I, [2, whereby said groove ID and block 5 interfit to form a dovetail connection between said block 5 and said member 9 providing for sliding adjustment of said member 9 laterally of the line of feed of the work, into different set positions.

A set screw [3 threaded into the heel end of the work-engaging presser foot member 9 for turning against the rear edge I2 of the guide block 5 provides for retaining said member 9 in diiferent set positions.

A line of graduations IS on the top of the workengaging presser foot member 9, and a mark I l on top of the guide block 5 provide for predetermining positions of adjustment of said member. A central hole I5 is provided in the guide block 5, and a horizontal cross slot H3 in said member 9 for passage of the needle, not shown, therethrough.

A coil spring I! is recessed, as at is, into the bottom of the end 2 of the shank l in the rear of the pin I and bears against the top of the workengaging presser foot member 9 in the rear of the guide block 5, whereby said block and member are normally swung upwardly about the pin i into slightly forwardly and upwardly inclined position, as best shown in Figure 4, established by engagement of the stop face 8 with the top of the guide block 5.

A work gage bar i9 is fitted in a bottom slot 2!! in the work-engaging presser foot member 9 extending from the front to the back thereof along the inboard side of said member, said bar being pivoted adjacent its rear end on a pin 26 extending horizontally through said bar and into said member, whereby the work gage bar It is swingable vertically in said slot 20. The work gage bar I9 has a vertical, enlarged outwardly and laterally turned front guide end 22 extending forwardly of said member 9 and designed to facilitate travel of the edge of the work along said bar and under said member 9. A coil spring 23 in the front end of the slot 29 recessed into said bar i9 and said member 9, forwardly of the pin 25, tends to swing said bar l9 downwardly forwardly of said pin 2i and said member 9 into a normal position in which the same inclines downwardly and forwardly, slightly, relative to said member 9. A rear end stop boss 24 on said bar is is adapted to engage the top of the slot 2%] in the rear of the pin 2 I, and thereby establish said normal position of said bar IS.

A guide finger 25 extends laterally from the front guide end 22 of the work gage bar l9 toward the outboard side of the work-engaging presser foot member 9, at the bottom edge of said bar, said finger 25 being thus spaced well forwardly of said member 9 and normally spaced by said bar l9 below the bottom of the work-engaging presser foot member 9 at the toe end of said member 9.

When the described presser foot is lowered, or set, by the presser bar of the sewing machine, in the usual manner, the work-engaging presser foot member 9 is straightened out, in opposition to the coil spring I1, for substantially fiat bottom engagement with the Work, not shown, with the heel of said member tensioned by the spring l1 and pressed against the work so that said member 9 is positioned for vertical swinging self-adjustment as the work is fed under the same. The edge of the work is fed over the guide finger 25, when it is desired to gage the stitching, with the edge of the work fed alongside and against the gage bar I9. The gage bar l9, when the foot is set, swings upwardly, in opposition to the coil spring 23 so that the same is tensioned downwardly relative to the work by said spring and is selfeadju'sting vertically as the work is fed past the same. The guide finger 25 facilitates sliding of the work under the work-engaging presser foot member 9. By adjusting the workengaging presser foot member 9 on the guide block laterally, as described, the gage bar l9 may be pre-set ior variably gaging the stitching from the edge of the work as desired. Because the work-engaging presser footmember 9 and the gage bar 19 are sen -adjusting, in the manner already described, it is rendered easy to turn the work under said member and bar as occasion may require. stitching, the described presser toot may be set to position the guidefinger 25 and the gage bar l9 on top of the work.

The foregoing will, lt'is believed, suiiice to impart a clear understanding of my invention without further explanation.

Manifestly, the invention, as described, is susceptible of modification without departing from the inventive concept, and rightis herein reserved to such modifications a-s tall within the scope of the appended claims.

What I claim is:

1. A presser foot structure for attachment to the presser bar of a sewing machine comprising a shank fitting said bar in upstanding position, a work-engaging presser foot member having a bottom slot therein, means 'pivotally suspending said member from the lower end of said shank for vertical swinging adjustment about a horizontal axis, a work-gaging bar pivoted in said slot for vertical-guiding, play in said member and If it is not desired to gage the 4 having a front work-engaging end extending outwardly of said member for engaging an edge of the work, and a work guiding finger extending laterally from said end of said bar to underlie said edge,

A presser foot structure for attachment to the presser bar of a sewing machine comprising a shank fitting said bar in upstanding position, a work-engaging presser foot member, means pivotally suspending said member from the lower end of said shank for vertical swinging adjustment about a horizontal axis, a work-gaging bar pivoted in said member for vertical play and having a front work-engaging end extending outwardly of said member for engaging an edge of the work, and a Work guiding finger extending laterally from said end of said bar to underlie said edge, said means including a dovetail sliding connection between said shank and member providing for lateral sliding adjustment of said member relative to said shank. to adjust said bar laterally of the work.

3. A presser foot structure f r attachm nt to the presser bar of a sewing machine comprising a shank fitting said bar in upstandin position, a work-engaging presser .foot member, means pivotally suspending said member from the lower end of said shank for vertical swin in adjustment about a horizontal axis. a wo k eaeins bar pivoted in said member for vertical play and h v n a front laterally curved Work-engaging end extending outwardly of said member for engaging an ed e of the work, and a Work guiding finger extending laterally from said end of said bar to underlie said edge, spring means for swinging said member in one direction to engage the work, and spring means for urging said bar down-v wardly of said member toward the work.

4. A presser foot structure for attachment to the presser bar of a sewing maQhi-ne comprising a shank fitting said bar in upstanding position, a guide block of dovetail cross-section pivoted on said shank for vertical swinging into upwardly and forwardly inclined position about a horizontal axis, a Presser foot member with a dovetail top groove therein fitting said block for sliding adjustment of said member laterally on said lock, said member having toe and "heel ends, respectively, a spring between saidsshank and member urging said member and block'in-to forwardly and upwardly inclined position to yie'ldingly engage the heel end of said member with the work, and a work guiding finger pivotedin said member'and extending forwardly thereof and-spring tensioned to swing downwardly of said member against the work.

BRUNO ANT'ONELLI.

REFEEENEES err-ED The following references are of record in t e le of this patent-:-

N D 1 PA'IENIS Number 7 Name Date 1,117,372 Gre-lst Nov. 1'7, :l9l4 FOREIGN Number Country Date 189,1 19 Switzerland-d- Apr. 16, 1337 674,078 German-y- Apr. '5, 1937