US1916171A - Presser-foot for sewing machines - Google Patents

Description

June 27, 1933. J. D. KARLE PRESSER FOOT FOR SEWING MACHINES Filed Jan. 8, 1932 311 00114 0; John D. Kai 1e.

abtomq Patented June 27, 1933 Units stares P AT hi JOHN D. KAR'LE, OF BOSELLE PARK, NEW JERSEY, ASSIGNGR TO THE SINGER MANU- FACTUEING COMFANY, OF ELIZABETH, NEW JERSEY, A CORPORATION OF NEW JnnsnY ?RESSER-EGGT EDP. SERVING EIACHINES Application filed January 8, 1982.

This invention relates to sewing machine presser-feet and more particularly to that class of presser-feet used for stitching cord or the like to a base material.

The objects of this invention are to provide improvec. adjustable means for varying the tension on the cord before it reaches the stitch-forming mechanism; to provide an improved presser-foot so formed that sharp bends or turns may be made in following the pattern to be corded, without materially decreasing the area of the work-engaging face of the presser-foot; and to provide a presserfoot which can be manufactured and assembled at little expense.

lVith the above and other objects in view, as will hereinafter appear, the invention con sists in the combination and arrangement of parts hereinafter set forth and illustrated in the accompanyin drawing of a preferred embodiment of the invention, from which the several features of the invention and the advantages attained thercby will be readily understood by those skilled in the art.

Figure 1 is a top plan View, partly in section, showing the presser-foot used for attaching a cord to a base material by Zigzag stitches.

Figure 2 is asection taken along the line 22 of Figure 1.

Figure 3 is a section taken along the line 3-3 of Figure 1.

Figure d is a disassembled perspective view of the presser-foot.

Figure 5 is bottom perspective view of the presser-foot.

In the embodiment of this invention selected for illustration, 1 is the shank which is adapted to be secured, in the present instance, to my improved zigzag-stitching attachment, disclosed in my copending application, Serial Number 57S,262, filed Decem her 1, 1931, or to a zigzag-stitching attachment such as that disclosed in the patent to G. A. Guy, No. 1,619,613, dated March 1, 1927. The shank 1 may be secured by the screw 2 or any other suitable means to the part 3 of the Zigzag attachment.

Carried by the shank 1 is a sole-plate 1 formed with a cord-guiding channel 5 in its Serial No. 585,461.

toe portion, a fiat L-shaped spring 6, the leg 7 or w iich is lined to the sole-plate i by the screw 8, and the other or transverse leg 9 overlies a portion of the channel 5 and ex- ,7

tends over the edge of the sole-plate 1. The two legs 7 and 9 of the L-shaped spring 6 are connected by an edge bend 6 and are vertically spaced apart. An adjusting screw 10 is provided for varying the tension exerted by the transverse leg 9 of the flat spring 6 on the cord 1i. This construction constitutes a self-threading cord-guide and provides means for varying the tension on the cord. The sole-plate 1 is also provided. with a transverse elongated needle-opening 11 having in its rear edge a second cord-guiding channel 12 to guide and also allow the cord to pass under the heel of the presser-foot without raising the prcsser-foot. of the sole-plate is recessed in the form of a semicircle as shown at 13, in F igure 5, to allow clearance for the cord in turning sharp corners in following the pattern to be corded.

To thread the presser-foot the cord 14 is slipped under the transverse resilient leg 9 of the flat spring 6 and drawn to the left until it enters the cord-guiding channel 5; the surplus cord being then pulled towards the operator so that the stitches will be started at the end of the cord.

lVhile m improved presser-foot has been shown and described as applied to a zigzagstitchingattachment it will be obvious that it may be applied directly to the usual springpressed prcsser-bar of the machine, and it will be understood that the form, construction, and arrangement of the elements may be varied. Therefore, the privilege is reserved of resorting to all such legitimate changes therein as may be fairly embodied within the spirit and scope of the appended claims.

Having thus set forth the nature of the invention, what I claim herein is 1. A presser-foot for sewing machines comprising a shank, a sole-plate carried by said shank, said sole-plate being provided with a transverse elongated needle-opening, a cord-guiding channel in its toe portion terminating at said needle-opening, and an adjustable flat spring overlying a portion The heel of said channel and extending over the edge of said sole-plate.

2. A cording Presser-foot for sewing machines comprising a shank, a sole-plate carried by said shank, said sole-plate being provided with a transverse elongated needle opening, a cord-guiding channel in its toe portion terminating at said needle-opening, a tension member overlying said cord-guiding channel, and a second cord-guiding channel in the heel portion of said sole-plate.

3. A cording presser-toot for sewing machines comprising a shank, a sole-plate carried by said shank, said sole-plate having a -l'ord-gniding channel in its toe, an adjustable tension member secured to said sole-plate and overlying a portion of said channel, an elongated needlc-opening, a second cord-channel located in the heel of said sole-plate and in rear of said needle-opening, said second channel terminating in an enlargement at its rear end.

4. A cording presser-foot for sewing machines having a shank, a sole-plate provided With a needle-opening and a cord-guiding channel leading to said needle-opening, an L-shaped spring member having its legs con nected by an edge-bend and vertically spaced apart, one of said legs being fixed to said sole-plate at one side of the needle-opening and the other of said legs overlying said cord-guiding channel.

5. A cording presser-foot for sewing machines having a shank, a sole-plate provided with a needle-opening and a cord-guiding channel leading to said needle-opening, an Lshaped spring member having its legs connected by an edge-bend and vertically spaced apart, one of said legs being fixed to said sole-plate at one side 01" the needle-opening and the other of said legs overlying said cordguiding channel, and means for adjusting the position of the last mentioned leg relative to said sole-plate.

In testimony whereof I have signed my name to this specification.

JOHN D. KARLE.

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