US426256A - fefel - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.-

H. H. FEFEL.

SEWING MAGHINE.

No. 426,256. Patented Apr. 22, 1890.

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UNITE STATES ATENT OFFICE.

HENRY ll. FEFEL, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO HELEN A. BLANCHARD, OF SAME PLACE.

SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 426,256, dated April 22, 1890.

Application filed February 13, 1888. Serial No. 263,774. (No model.)

To all whom it may concern:

Be it known that I, IIENRY H. FEFEL, acitizen of the United States; and a resident of Philadelphia, Pennsylvania, have invented certain Improvements in Sewing-Machines,

of which the following is a specification.

The object of my invention is to effect the tucking, plaiting, or shirring of fabrics rapidly and accurately by means of asewing-machine, and this object I attain in the manner hereinafter set forth, reference being had to the accompanying drawings, in which Figure l isa longitudinal section, partly in elevation, of sufficient of a sewing-machine to illustrate my invention. Fig. 2 is a transverse section of the same; and Figs. 3 to 7, inclusive, detached views, illustrating details of construction and modified formsof parts of the machine.

A is the bed-plate of the machine, having an arm B, in which is guided the usual presserbar 0 and the needlebar D, the latter being operated by a cam on the main shaft, acting through the medium of the pivoted needlearm, while another cam on said shaft acts to effect the reciprocation of the shuttle E, which is guided in a race below the workplate, as usual. The needle-bar carries two needles a, which can be adjusted laterally on the needle-bar, so as to provide more or less space between them, and the needle-hole in the work-plate is elongated laterally, so that both needles can pass through the same, the shuttle passing through the loops of both needles, and one shuttle-thread tying or looking the loops of both needle-threads on the back of the fabric.

On the work-plate in advance of the needles and occupying a position midway between the two needles is a raised rib b, which is preferably adjustable as toheight by means of a controlling-"screw d, as shown in Fig. 3, or by other equivalent means, so that as the work is fed to the needles it is compelled to pass over this rib, and is thereby tucked or plaited, the needles descending on opposite sides of this tuck or plait, and the stitches of the needle-threads being drawn together he neath the tuck by means of the single looking or shuttle thread, so that the tuck is firmly sewed together at its base, the width of the tuck or plait being regulated by the adjustment of the rib b, as will be readily understood. The presser-foot J is split or slotted, as shown in Figs. 1 and 4:, so as to permit the passage of the tuck or plait through the same, and that part of the presser-foot on one side of the rib b and in advance of the needles is preferably raised, so that it does not confine the fabric or prevent the movement of the same toward the rib for the purpose of being tucked. To facilitate tucking, the rib b may in some cases be set at an angle, as shown in Fig. 5, so as to gather the material together as it is fed toward the needles.

In the rib Z) is preferably formed an opening f, through which a cord may be passed, this cord being fed into the tuck and confined therein when said tuck is sewed together at the base, so that it may act as a drawing-cord, by which the fabric may be shirred; or, if desired, the shirring of the fabric maybe effected at the same time that the sewing operation is performed, the feed-plate in this case comprising two parts m and or, one in front of and the other behind the needles, that part on of the plate in front of the needles being carried by a bar to, acted on by a cam it, having a greater throw than the cam so, which acts upon the bar 68, carrying the plate it behind the needles, so as to cause the feeding of the fabric toward the needles faster than the rear feed takes it away from the same, the surplus fabric being shirred before the S5 sewing of the tuck or plait is effected. Acam 3 acts to lift both feed-bars, and a spring y effects the retraction of said bars.

Another means of effecting differential feed is shown in Fig. 6, in which the two bars are 0 under control of an arm one of the bars bearing upon the same at a point farther from the fulcrum than the bearing of the other bar, and in Fig. 7 still another means of effecting the operation of the forward feed is illustrated, a lever 15 hung to the frame of the machine being acted upon by a pin 15 on the needle-bar as the latter rises, and the lower end of the lever feeding the material forward over the top of the rib Z1.

Although in carrying out my invention I prefer that a shuttle should be used, I do not limit my claim thereto, but intend to include therein abobbin-carrier,lo0per, or other wellknown equivalent of the shuttle.

Having thus described my invention, therefore, I claim and desire to secure by Letters Patent l 1. The combination, in a sewing-machine, of stitch-forming mechanism consisting of a pair of spaced needles, a feed-plate, a shuttle or equivalent device operating in con j unction with both needles, and means for actuating said parts, with a plate over which the work is fed, said plate having in advance of and in line with the space between the needles a rib projecting above the surface of the plate, whereby the fabric, as it is fed forward, will be passed continuously over the rib, and will have a continuous straight tuck formed in it, and the rows of'stitches will be formed on opposite sides of the base of said tuck and tied together by the shuttle-thread beneath the tuck, substantially as specified.

2. The combination, in a sewing-machine, of stitch-forming mechanism consisting of a pair of spaced needles, a feed-plate, a shuttle or equivalent device operating in conjunction with both needles, and means foractuating said parts, with a plate over which the work is fed, a rib carried by said plate and projecting above the face of the same, and

means for vertically adjusting said rib, so as to vary the extent of projection of the same, said rib being located in advance of and in line with the space between the needles, substantially as specified.

3. The combination, in a sewing-machine, of stitch-forming mechanism consisting of a pair of spaced needles, a feed-plate, a shuttle or equivalent device operating in conjunction with both needles, and means for actuating said parts, with a plate over which the work is fed, a rib projecting above the surface of said plate and acting continuously upon the fabric passing over it, so as to form a continuous straight tuck therein, and a presser-foot split'or slotted for the passage of said tuck and having the opposite side portions in different horizontal planes, whereby when one portion bears on the fabric the other portion will be above the fabric and will permit the latter to be drawn in beneath it, substantially as specified.

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

HENRY H. FEFEL.

\Vitnesses:

WILLIAM D. OONNER, HARRY SMITH.

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