US996192A - Presser-foot. - Google Patents

Description

W. ARBETTER.

PRESSER' FOOT.

APPLIUATION HLBD'J'UNE 1s, 1906.

996,192, Patented June 27, 1 911.

NTE STAT S PATEN T OFFTCE.

VI'OLF ARBETTER, OF CHELSEA, MASSACHUSETTS, ASSIGNOR TO ARBETTER FELLNG MACHINE COMPANY, OF BOSTON, MASSACHUSETTS, A CORPORATION OF MAINE.

PRESSER-FOOT.

To all whom it may concern:

Beit known that I, W'OLF ARBETTER, a citizen of the United States, residing at Chelsea, county of,E Suffolk, and State of Massachusetts, have invented an Improvement in Presser-Feet, of which the following description, in connection with the accompanying drawing, is a specification, like letters on the drawings representing like parts.

This invention relates to a novel presserfoot for use in machines for felling or making a blind stitch, machine such as shown and described in Patent No. 830,699, granted September 11, 1906. The patent referred to shows a presser-foot having guiding edges, and a throat-closing device to control the size of the throat in the presser-foot to correspond with the thickness of the stock or material being bent upwardly into said throat by a bender as said material is being stitched by a blind stitch to the body material.

Herein the presser-foot is provided with an edge-lifter that lifts the edge of the material, a lining that is to be blind-stitched to the body material on which the lining is superimposed, that said edge may be maintained upturned near the delivery end of the edge-lifting device so that the point of the needle located wholly above the presserfoot and work-support may get under said lifted edge when making blind stitches. The edge-lifter is so constructed that it may be moved longitudinally of the foot and thus raised to provide for a seam in the lining.

The presser-foot herein shown is further provided at its under side with a detachable notched plate forming the rear edge of the throat.

Figure l in side elevation represents my improved presser-foot the fabric or material under the foot being shown in section on the line Fig. 3; Fig. 2 is an end elevation of the foot looking at Fig. l from the right; Fig. 3 is a plan view; Fig. t is a section on the line m', Fig. 3, and Fig. 5 is an underside elevation of the parts shown in Fig. 2.

In the drawings, A represents a presserfoot, it having rising therefrom a suitable shank A that in practice will be attached to a presser-foot-carrying bar common to said patent. The foot is out through from its top to its bottom side to form a throat b,

Specification of Letters Patent.

Application filed June 18, 1906.

Patented June 27, 1911. Serial No. 322,131.

and t-he under side of the foot is recessed to receive the nearly circular part of a throatclosing device all common to said patent, it being pivotally sustained by a screw a in in the presser-foot, said throat-closer having a projecting shank, and suitable locking means represented as a spring-pressed pin a, see Fig. 2, carried by the foot, co-acting with notches in the arm of the throat-closer to lock the same in its adjusted position. The under side of the foot is provided with a groove in which is inserted a block a3 notched at its inner end, the said block being held in place by a screw at. The upper side of the block sustains the needle as it passes out of the material on its forward movement during the formation of the stitch, and the foot is scooped out or countersunk at a5 to provide room for the completion of the needles movement and for the swing of the needle laterally between the straight and the diagonal thrusts which occur in making a stitch.

The material being stitched together comprises usually what I shall designate body material b, which may be the material of which a rain-coat or other garment is made, and its `lining` or facing b2, the edge of the facing being blind stitched to the body material, and in doing this the body material will be raised at intervals as provided for in said patent by a bender.

The stitch-forming mechanism to be used with the presser-foot herein shown, as well as the work-support, will be the same as provided for and fully described in said application.

The foot A, see Fig. 2, is slotted at its edge to receive a lip c extended from the edge-lifter c shaped to present a guiding groove 2 and preferably a finger-piece e2. The lip c has a slot 4 shown by dotted lines that is entered by two pins 3 carried by the foot, and by engaging the finger-piece e2, the edge-lifter may be moved longitudinally on the foot, and thus raised from the work owing to the upward inclination of the toe of the presser foot. The edge lifter is slid to the right viewing Figs. 1 and 3 whenever a seam in the lining or facing enters the guiding groove 2 that acts on the inturned edgel of the lining.

The positions of the needle in stitching are represented by dotted lines in Fig. 3, one dotted line showing the diagonal thrust or that thrust of the needle which passes through the material in a direction diagonal to the line of feed, and the other the straight thrust or that thrust of the needle which passes through the material in the direction of the line of feed, the needle at the straight thrust entering only the body material, and at the diagonal thrust entering only the upturned edge of the lining or :Eacing which is held lifted by the edge lifter so that the point of the needle may get well under the edge.

I find it of great advantage to lift the edge of t-he lining or infolded material through the agency of the edge-lifter herein described, and the stitching done is much better and more closely resembles hand blind stitching than when the edge b2 is not uplifted as herein provided for.

I have secured to the upper side of the presser-foot by screws g a guard g', it crossing the presser-toot at right angles and being of a length to extend considerably beyond the side edges of the presser-foot. The guard g is shown in my pending application, Serial No. 322,132, filed June 18, 1906, and is therein claimed.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent is 1. A presser foot for a blind stitch sewing machine provided with an opening through which the work is presented to the needle andhaving a recess on its upper face to receive a needle passing thereover, an edge lifter to direct the edge of an upper layer of the work above the bottom of the presser foot at said opening, and means for raising the edge lifter independently of the presser foot when desired to allow the passage of seams or other irregularities.

2. A presser foot for a blind stitch sewing machine provided with an opening through which the work is presented to the needle and having a recess on its upper :tace to receive a needle passing thereover, and a notched plate inserted in thebottom of the presser foot and constituting the bottom of said recess at the rear of said opening and means for removably attaching the said plate to the presser foot.

3. A presser foot for a blind stitch sewing machine provided with an opening through which the work is presented to the needle and having a recess on its upper face to receive a needle passing thereover, a forwardly and upwardly inclined toe Slotted at its edge, an edge lifter slidably mounted inv said slot and acting to direct an edge of an upper' layer of the work above the bottom of the presser foot at said opening, said edge lifter being raised to allow the passage of seams or other irregularities by sliding the same forward on the inclined toe.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

WOLF ARBETTER.

Vitnesses GEO. W. GREGORY, MARGARET A. DUNN.

Copies of this patent may be obtained for ve cents each, by addressing' the Commissioner of Patents` Washington, D. C.

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