US687777A - Combined needle and presser bar. - Google Patents

Description

Patented Dec. 3, ISMJI'.Y

W. N. PABKES. CUMBINED NEEDLE AND PRESSER BAR.

(Application filed Jan. 3. 1900.)

(No Model.)

TN: Nonms PETERS cc. pHoro-Limo., wgsumnrou. u. c.

. its length) embodying my invention.

UNITED STATES 'PATENT FFICE COMBINED NEEDLE AND PRESSER BAR.

SECIFICATION -forrnng part of Letters Patent No. 687,777, dated December 3, 1901.

original application filed lliay 18, 1899, Serial No. 717,292. Divided and this application led January 3, 190D. Serial No. 198. (No model.)

To all whom t may concern.-

Be it known that I, WILLIAM N. PARKES, a citizen of the United States of America, residing in the borough of Brooklyn, New York city, county of Kings, and State of New York, have invented new and useful Improvements in Needle-Bars and Presser-Bars, of which the following is a specification.

On May 1-8, 1399, I filed an application for a patent on a sewing-machine, Serial No. 717,292, of which this application is a divis1on.

My invention has reference to needle-bars and presser bars and feet.`

The nature and objects of the invention will be best understood when described in connection with the accompanying drawings, in which- Figure 1 is a side View, on an enlarged scale, of a needle-bar (broken away intermediate of Fig. 2 is a section exposing the arrangement and position of the :parts within 'the needle-bar when it isin its elevated position, and Fig. 3 is a section exposing the position of the same arts when the bar is in its lower position.

ig. 4 is a top plan view of the presser bar and foot. Fig. 5 is a section on line to a, Fig. 1.

bar, in which is formed from its upper end 'down to near its lower end a cylinder 15, as shown in Figs. 2 and 3. In the lower portion of the cylinder is located a round presser-bar in which is formed a longitudinal slot 3. In the side of the needle-bar is formed a slot or way 5, which extends from the lower end up, as shown in Figs. 2 and 3. In the way is adapted to reciprocate the shank 4 of a presser-foot 7', the shank having a portion extending into the slot 3 of the presser-bar 2, as shown in Figs. 2, 3, and 5, which portion, in connection with screws 11 and 12, serves as a means for securely fastening the shank to the presser-bar. A spring 3, located above the presser-bar in the cylinder l5, normally depresses the said presser-bar, a screw 9 serving as a means for regulating the pressure of the spring on the bar and nut 10 to lock the screw 9 in position. The upper internal part of the cylinder is threaded for the reception of the screw 9.

The presser-bar 2 retains the shank 4 in the way 5, and a collar-6 serves as an additional means for retaining the said shank in the said way, especially the lower end of the shank. The screws 1l and 12 pass freely through the presser-bar on one side of the slot 3 and have a seat in the said bar on the other side of the said slot,as shown in Fig. 5. Holes 13 and 14 are made through the side of the needle-bar, as shown in Figs. 1 and 5, as a way forgetting the screws l1 and 12 into their position. Having thel shank of the presserfoot attached to the side of the presser-bar or eccentrically with respect to thecenter of the said bar and said shank riding in a way formed in the side of the needle-bar or eccentrically with respect to the center of the said needle-bar prevents the presser-foot shank, and consequently the foot, from turning.

The presser-foot 7 can be made separate from the shank 4 and then attached in any usual manner to the said shank, or the shank and foot can of course lne-'made .from one piece. The needle is held in the lower end ot' the bar by any usual means. A

In the present example I have shown the length of the shank 4 of the presser-foot of such an extent that the foot remains in en- In the drawings, l represents the needle gagement with the work until the point of the needle is just about to become disengaged from the same or until after the eye of the Vneedle has been drawn above the material.

Locating the presser-bar and spring inside of the needle-bar has many advantages over locating them on the outside, among which I might mention the use of practically the entire length internally of the needle-bar, which gives me a good substantial bearing for the presser-bar to ride in and an opportunity to use a long presser-bar spring and at the same time leaves the entire outside surface of the needle-bar for use, as in an ordinary needlebar.

This needle-bar and presser-bar combination is especially advantageous in use in any machine when it is desired to hold the work in an extended position in a frame and to move the frame, for the reason that the work is entirely free from any pressure from the foot when it moves. It is also very advantageous for the further reason that it' the IOO needle-bar is moved laterally the presser-foot moves with it, and therefore the needle-hole through the presser-foot can be much smaller and the foot can be also much smaller.

What I claim as new is- 1. A hollow cylindrical needle-barhavinga slot formed longitudinally therein, a presserbar adapted to be reciprocated within the cylinder of the needle-bar, a presser-foot having a shank adapted to reciprocate in the aforesaid slot and to connect with the presserbar, means for connecting the shank of the presser-foot to the presser-bar, and yielding` means interposed between the needle-bar and the presser-bar whereby the presser-foot is normally pressed from the needle-bar .so as to engage the work.

2. A hollow cylindrical needle-bar,a presser bar(havingalongitudinalslotformcd therein) adapted to reciprocate in the cylinder of the said needle-bar, a presser-foot havin gashank, means for connecting the said shank in the aforesaid slot, and a spring interposed between the presser-bar and the needlebar whereby the presser-foot is normally pressed from the needle-bar so as to engage the work.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

WILLIAM N. PARKES.

Witnesses:

EUGENIE P. HENnRIoKsoN, GEORGE EISEN'BRAUN.

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