US415977A - Sewing-machine for finishing button-holes - Google Patents

Description

(No Model.)

I J. BEECH. SEWING MACHINE FOR FINISHING BUTTON HOLES.

m ml i I 6069666665. I Ewen 011 UNITED STATES PATENT OFFICE.

JOHN REEOE, OF BOSTON, MASSACHUSETTS.

SEWING-MACHINE FOR FINISHING BUTTON-HOLES.

SPECIFICATION forming part of Letters Patent No. 415,977, dated November 26, 1889.

Application filed April 29, 1887; Serial No. 236,556. (No model.)

To all whom it may concern.-

Be it known that I, JOHN REEOE, of Boston, county of Suffolk, and State of Massachusetts, have invented an Improvement in Hachines for Stitching Thrums, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

In the stitching of button-holes by machinery the free ends or thrums of the needlethread at the inner end of each button-hole and the under thread and stay-thread extended between the ends of the button-holes have to be overstitched or caught to the under side of the material to complete the finish of the series of button-holes. This until recently has been done by a needle and thread in thehand of the operator.

The object of this invention is to accomplish this by a sewing-machine. I have taken a throat-plate having guides or walls converging toward the needle-hole and have combined with it a cam to reciprocate the throatplate laterally under the needle, so that the latter descends first at one and then at the other side of the thrulns collected at the under side of the material in the line of the needle-hole, as will be described.

Figure 1 in longitudinal section shows a sufiicient portion of a sewing-machine of usual construction with my improvements added to enable my invention to be understood, and Fig. 2 is a partial top view of the bed-plate and throat-plate.

The bed-plate A, rotating shaft 13, needlebar O, and needle D are all common to the IVheeler 85 Wilson machine, style No. 10.

space, as a leading to the needle-hole and the direction of the feed of the material, is such as is now in use to gather together at the needle-hole the thrums to be caught to the under side by the material or to be overstitched.

In my invention the feed and needle holes are each made Wider, so as to permit the throat to be moved laterally without moving the feed laterally, and to enable the needle D to descend at one and then at the opposite side of the thrums, under thread and cord resting in the small or contracted end of the space a at the needle-hole. This throat has connected to it a shank b, which is fitted into and so as to slide in a groove in the frame-work of the machine, the said shank having a pin 1), which is extended down through a slot 1) in the bedplate, the said pin being engaged by a cam 0, shown as grooved and pivoted on a stud c, the said cam having at its periphery bevel teeth; as 0 which are engaged by the teeth of a bevel-gear 0 attached to the shaft 13, the cam rotating once for two rotations of the shaft B.

a I claim 1. In a sewing-machine for overstitching thrums, a throat-plate having the usual feed and needle opening, and having also a converging space or slotin front of the said needle-opening, combined with a cam and connections between said cam and throat-plate to reciprocate the latter beneath the needle. 2. In a sewing-machine for overstitching thrums, the combination, with the throatplate at, having the needle-opening a, and the converging recess or slot a in front of said needle-opening, of the shaft B, having bevelgear 0 the cam 0, having bevel-gear c and the shank I), attached to said throat-plate at one end and having the pin 19 entering the groove of said cam at its other end.

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

JOHN REEOE. WVitnesses:

G. W. GREGORY, B. DEWAR.

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