US668221A - Presser-foot for sewing-machines. - Google Patents

Description

No. 668,22]. Patented Feb. l9, 190i.

A. BONTKE.

PBESSER FOOT FOR SEWING MACHINES. (Application filed Mar. 12, 1900. (lo llndel.)

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ALBERT RONTKE, OF ELIZABETH, NEW JERSEY, ASSIGNOR TO THE SINGER MANUFACTURING COMPANY, OF NE'W JERSEY.

PRIESSER- -FOOT FOR SEWING MACHINES.

SPECIFICATION forming part of Letters Patent No. 668,221, dated February 19, 1901.

Application filed March 12, 1900. Serial No. 8,846. LNo model.)

To a whom it may concern:

Be it known that I, ALBERT RONTKE, a citizen of the United States, residing at Elizabeth, in the county of Union and State of New Jersey, have invented certain new and useful Improvements in Sewing-Machine Pressers, of which the following is a specification, reference being had therein to the accompanying d rawings.

This invention relates to that class of sewing-machine pressers which are made in two parts, one of which is yieldingly connected with the other, so as to allow the easy passage to the needles of cross-seams and other [5 thick portions of the work; and the invention has for its object to provide a presser of this class which is simple in construction and efficient in operation.

The improved presser comprises a shank or stock having a rigid main foot and an auxiliary foot located in front of the main foot, said auxiliary foot having an arm or portion pivoted at its rear end to the rigid stock or portion of the presser and yieldingly forced downward by a spring placed between the pivot of said arm and the foot portion of the auxiliary presser, so that the latter will be free to rise when a cross-seam or other thick portion of the work comes beneath it to allow the easy approach of such cross-seam or thick portion of the work to the needle, the said auxiliary presser resuming its normal position as soon as the thick portion of the work has passed, so that the work will be properly held at all times.

In the accompanying drawings, Figure 1 is a side view of the improved presser, and Fig. 2 is a similar view of the same, but with the stock partly broken away, the auxiliary presser being in slightly-different positions in the two views to illustrate its operation. Fig. 3 is a View of the presser from the rear; and Fig. 4, a horizontal section on line 4 4, Fig. 1, looking down.

A denotes the shank or stock of the presser, said shank or stock being adapted for attachment to the lower end of a sewing-machine presser-bar. B is the main presser-foot rigid and preferably integral with said stock, and O is the auxiliary presser-foot, located in front of the main foot B and provided with an arm c, pivoted at its rear end to the stock or rigid portion of the pressel' by the pin 0, the said auxiliary presser being provided with a needle-hole 0 The stock A is bored vertically to form a socket a for the reception of a small coil-spring Z), which presses on the arm n to hold the auxiliary foot yieldiugly downward, a small depression for the reception of the lower end of said spring being preferably formed in the upper face of the said arm 0, and the tension of said spring being regulated by a screw cl, adjustable in the upper internally-threaded portion of said socket a.

The presser-feet B and C, as herein shown, are of equal width, or, in other words, each presser-foot is a full-width presser-foot, and the bifurcated arm a of the auxiliary foot 0 overlies the main foot B, (see Figs. 3 and 4,) so that said main foot serves as a stop to limit the downward movement of said auxiliary foot when the entire presser is lifted for the purpose of inserting or removing the work.

The construction just described provides a compact and simple two-part presser, as will be readily understood, and owing to the fact that the pivot of the arm 0 is located at some little distance from the auxiliary foot 0 the latter moves vertically without any appreciable tilting action in passing over crossseams or other thick portions of the work, so that the latter can travel beneath the presser in a smooth and easy manner at all times. Also the location of the springb between the pivotal and foot portions of the auxiliary presser contributes to the easy movements of the latter. Furthermore, the yielding auxiliary presser-foot C, in which the needlehole is formed, bears upon the goods around the needle or at the point of stitching, while the main presser-foot B bears upon the work rearward of the needle. Thus, as either presser-foot is capable of yielding vertically when a cross-seam or other thick portion of the Work comes beneath it, an easy approach of the work to the needle will at all times be provided for, and any danger of such 0bstruction in the movement of the Work by a too unyielding presser-foot as would interfere with the proper feed thereof is entirely avoided.

Having thus described my invention, I

claim and desire to secure by Letters Patent- 1. A sewing-machine presser comprising a stock, a main presser-foot rigid with said stock and adapted to bear upon the work rearward of the needle, an auxiliary presser-foot having a needle-hole therethrough and thus adapted to bear upon the work at the point of stitching,said auxiliary foot being provided with an arm pivoted at its rear end to said stock and overlying said main presser-foot which thus serves as a stop for said auxiliary foot when the presser is lifted, and a spring interposed between said stock and said auxiliary presser-foot to give said foot a yielding pressure upon the work.

2. A sewing-machine presser comprising a stock having a socket a, a main full-width presser-foot B rigid with said stock and adapted to bear upon the work at the rear of the needle, an auxiliary full-width presser-foot 0 having a needle-hole 0 located in front of said main presser-foot and adapted to bear upon the work at the stitching-point, said auxiliary presser-foot having an arm pivoted at its rear end to the rear of said stock and overlying said main presser-foot, which thus serves as a stop for said auxiliary foot when the presser is lifted, aspring b in said socket a to force said auxiliary presser-foot yieldingly against the work, and means for regulating the tension of said spring.

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

ALBERT RON'IKE.

" Witnesses:

HENRY J. MILLER, HAROLD W. BROWN.

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