US2367865A - Sewing machine - Google Patents

Description

Jan. 23, 1945 K, P. HOLLANDER SEWING MACHINE Filed April 27, 1943 INVEN'IOR KR HOLLANDER ATTORNEYS Patented Jan. 23, 1945 UNITED STATES PATENT QFFIC'E Application April 27, 1943, Serial No. 484,727 In Canada May 14, 1942 1 Claim.

This invention relates to sewing machines used in the production of ornamental trimming mate rial of the ma ra'bou type, such material consisting of a strip of feathers having their quill portions sewn in overlapping relation to a reinforcing element such as a length of cord or string. The conventional sewing machines used in making this material are not entirely satisfactory since they do not consistently produce a product having its component parts properly seWn together at all points.

I I have found that the foregoing difficulty is due largely to haphazard lateral movement of the feathers and the reinforcing cord or twine as these parts are fed beneath the presser foot to the needle. It. is also difiicult .to correctly inter pose each feather between the presser foot and the feeding mechanism so that it will travel in a straight line parallel with the cord or twine as it is fed to the needle.

According to my invention, the foregoing difiiculties are eliminated by removing the conventional presser foot, which has a smooth bottom surface, and substituting a presser foot having a full length, downwardly opening bottom channel through which the reinforcing cord or twine and the quill portions of the feathers are fed to the needle in properly assembled relation, being held against excessive vertical displacement or lateral wandering by the defining walls of the channel.

In its preferred embodiment my improved presser foot is formed with a downwardly opening, longitudinally extending channel open at both ends, said channel being made of decreasin width from its ends to an intermediate point where the channel intersects a relatively long and narrow transversely arranged needle slot extending from the top to the bottom surface of the presser foot. The needle slot is longer than the width of the channel and is arranged so that the end portions of the 'slot form, in effect, recesses lying at opposite sides of the restricted portion of the channel. That portion of the presser foot which forms the top wall of the downwardly opening channel is provided with a hole through which the cord or twine is led into the channel, said hole being located in advance of the needle slot and being preferably inclined so that its lower end is nearer to the needle slot than its upper end.

The foregoing and other objects, advantages and characteristic features of my invention will be more readily understood from the following machine. I

Fi 2 is a top plan view of the assembly shown in Fig. 1. This view also shows the manner in which the feathers are inserted in the entrance end of the presser foot channel along which the feathers are fed by the conventionalfeed dogs. Fig. 8 is a transverse sectional view along the line 33 of Fig. 2;

Fig. 4 is an end elevation of the presser .foot per se and shows how this element appears when looking toward the entrance end of the channel provided therein.

Fig. 5 is a bottom plan view of the presser foot shown in Fig. 4.

In the present drawing I have shown my improved presser foot 5 in association with only those conventional parts of a sewing machine which need to be referred to in describing the construction and application of my invention. Such conventional parts comprise the presser foot supporting post 6, the needle 1 and the conventional side feed dogs 9 and central feed dog In. The presser foot 5 is shown attached to post 6 by a shank extension II which may be of any conventional or desired construction.

The bottom surface of the presser foot 5 is recessed to provide a centrally located longitudinally extending channel I! open at both ends. This channel is made of gradually decreasing width from its ends toward an intermediate point where the channel intersects a relatively long and narrow transversely arranged needle slot 13 which extends from the top to the bottom surface of the presser foot. As clearly shown in Figs. 1 and 5, the needle slot is longer than the width of the channel so that the end portions of the slot form, in effect, recesses lying at opposite sides of and communicating with the restricted portion of the channel. At its entrance end the depth of the channel is preferably increased in a flaring manner as indicated at IS in Fig. 1.

The portion of the presser foot which forms the top Wall of the downwardly opening channel I2 is pierced by an inclined cord or twine receiving hole It which lies between the needle slot l and the entrance end of the channel. This hole cord or twine to which the feathers are sewn is introduced into the channel I2 through the hole I6. The feathers Il are fed beneath the presser foot so that the overlapping quills I8 of succeeding feathers are received in side by side relation within the channel I2 and are gripped between the top wall of the channel and the central feed dog II]. The soft downy barbs of the feathers which project laterally beyond the sides of the channel I2 are gripped between the side feed dogs 9 and bottom surfaces I9 of the presser foot which lie at opposite sides of the channel. As the quill portions of the feathers and the overlying cord are fed past the needle slot I3 they are sewn together by the operation of the needle I which, as is usual in machines of this type, is alternately shifted toward opposite ends of the needle slot I3. It will thus be seen that the quills of the feathers and the cord or twine are sewn together at the restricted intermediate portion of the channel where these parts are held in properly assembled relation by the confining walls of the channel. The channel is made of increasing width toward its opposite ends to facilitate movement of the feathers and cord toward and away from the restricted portion of the channel where the sewing takes place.

While the dimensions of the channel I2 are not particularly critical it is important that the depth of the channel should not be so great as to prevent the quill portions of the feathers and the overlying cord or twine being properly gripped between the top wall of the channel and the central feed dog. It is also important that the width of the channel be such that the quill portions of the feathers and the cord or twine will be held in closely grouped relation by the walls of the channel at the point where the sewing occurs.

Having thus described what I now conceive to be the preferred embodiment of this invention it will be understood that various minor modifications may be resorted to within the scope and spirit of the invention as defined by the appended claim.

Having thus described my invention, what I claim is:

A sewing machine presser foot for use in the production of ornamental trimming material of the marabou type, said presser foot being provided with a longitudinally extending featherreceiving channel in the bottom surface thereof and with a relatively long and narrow transversely extending needle slot extending from the top to the bottom surface of the presser foot, said channel gradually decreasing in width from both ends to an intermediate point in the length of the channel and said needle slot being arranged to intersect said channel so that the ends of the slot provide recesses lying at opposite sides of and communicating with the narrowest portions of said channel, the portion of the presser foot forming the top wall of the channel being pierced by an opening through which the cord or twine to which the feathers of the trimming material are sewn is introduced into said channel, said opening being located between the needle slot and the entrance end of the channel and being inclined so that its lower end is nearer to the needle slot than its upper end.

KLAUS PETER H OLLANDER.

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