US46871A - Improvement in tuck-creasing devices for sewing-machines - Google Patents

Description

J. BOLTON.

Tuck Greasing Device for Sewing Machines. 7 No. 46,87i. Patented March 21, 1865.

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with the operation of sewing.

UNTTeo STATES PATENT JAMES BOLTON, OF CHICAGO, ILLINOIS.

lMPROVEMENT lN TUCK-CREASlNG DEVICES FOR SEWING-MACHINES.

Specification forming part of Letters Patent No. 46,871, dated March 21, 1865.

'able others skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is a side elevation of a marker constructed according to my invention. Fig. 2 is a transverse sectional view, taken behind or to the right of the presser-bar B, shown in red outline in Fig. 1. Fig. 3 is a plan of the marker.

Similar letters of reference indicate like parts.

This invention consists in a novel mode of constructing and operating markers or creasers to be used on sewing-machines, being composed of only two pieces, hinged together so as to make one instrument, and so attached to a presser-har having apositive vertical motion as to be operated at every movement of the feeding devices.

The drawings represent the marker in position on the table and attached to the presserbar of a sewing-machine, part of whose outlines are shown in red.

A is the marker, made up of two pieces, one of which is designated by the letters I) (I and the other by the letters a, g, e,f, and n. That portion marked 9 is flattened, so as to lie upon the table of the sewing-machine, to which it is secured adj ustably by means ofscrew-threaded holes made in the table, and a slot, h, in the flat part {1 of the tucker to receive an adjusting-screw, z. The length of the part 9 is such that when the zuljusting-serew 'i is fixed in the slot h, at the right-hand end thereof. the edge 10 of said flat part 9 will not reach to the needle-slot made in the table, so as to interfere An arm, 6, extends from the left-hand inner corner of the part 9, in a direction parallel with the slot it, past the place of making the seam, the length of the arm 0 in this example of my invention being about equal to the length of the part 9. At a point opposite the end of the shoe (lit is joined to another arm, f, which extends at right angles therefrom inward to a point in line with the place of making the seam, where it is raised to a dull knife-edge, n. The arm fis intended to lie upon the bed-plate of the sewing-machine, and both it and the arm 0 are of small diameter, so as not to offer any obstruction to the movement of the inaterial to be sewed.

A vertical arm, a, rises from the right-hand outer corner of the part g and curves upward and forward toward the place where the seam is formed in a direction parallel with the slot h. The end of the vertical arm a is connected by a pivot with a straight arm, I), which extends past the place where the seam is formed to a point opposite to and in line with the arm f, where it is joined by a curved shoe, cl, which extends therefrom at a right angle toward and above the arm f.

The shoe dis slotted at 0, where it comes above the raised edge of the arm f, and its toe or outer end is turned upward, so that the material to be sewed may readily pass between it and the arm f.

The arm 12 carries an adjustable bracket, K, by passing through a vertical slot cut therein, as seen in Fig. -2, and in which it is free to slide. The bracket K extends at right angles from the arm 1) toward the place of the presser-bar of a sewing-machine, and it is to be adjustably attached to the inside of the presserbar by means ofan open slot, 8, in said bracket, fitting over the shank of a screw, which takes into it a threaded hole made in said presserbar.

The bracket Kean be attached to thcpresserbar in many cases by means of the same screw which secures the presser-foot to the bar.

The open slot sin the bracket K enables me to fix it at any desired height on the presser-bar, according to the lateral adjustment of the marker on the bed-plate for the width of tuck. When the bracket K is fixed to the presser-bar the arm I) of the marker, being carried in said bracket, reciprocates with the presser-barthat is, when the marker is used on a sewingmachine which has a reciprocating feed, so calledthe said arm 1) moving freely upon its pivot c. The material being sewed lies upon and moves over the arm f, and at every ad vance of the feed the shoe d of the marker is raised off the material with the rising of the presser-bar, and afterward borne down by the said bar and pressed upon the material while the needle is making another stitch, the material being crimped between the slot 0 in the shoe dand the raised edge a of the arm f, thus marking the place for the tuck step by step as the sewing or the perforation of the material proceeds on aline parallel with the seam or perforations by means of the rising and falling of the presser-bar.

The width of the tuck is determined by the adjustment of the slot h and set-screw i. 'A gage to guide the edge of the material may be made, if desired, along the edge 1) of the part got the marker; but it will be found most convenient to use an independent gage, j, which may be adjusted to the sewing-machine above the part 9 of the marker by the same set-screw t which secures the marker to thetable. When a narrow tuck is to be made the position of the joint 70 ot' the arm I) is moved to'the right a suitable distance, and the extent of the reciprocating movement of the shoe d--or, in other words, the extent ofits vibration-is correspondingly lessened, according to the distance of the shoe from the presser-arm. The movement given to the shoe when it is near the presserbar, as when it is marking for a narrow tuck, is sufficient for successful operation, because the material which is being sewed is held and advanced smoothly beneath the shoe for a considerable distance to one side ot' the line of sewing by the joint operation of the feeding devices and the needle; but when the tuck is to be wide the extent of the vibrating movement of the shoe needs to be greater,

because that portion of the material which lies at a considerable distance at one side of the seam has a tendency to drag or lag behindthe advance of the seam, unless it is held extended and smooth by the hand of the operator or by some other means. It is therefore necessary that the shoe be raised sufficiently at each movement of the feed to clear the material. This,it will be seen, is efl'ectuallyaccomplished by my invention, the extent of vibration of the shoe being increased and diminished by the adjustment ofthejointed arm and the consequent lengthening and shortening ofthe distance between the shoe and the presser-arm.

I disclaim marking a tuck or line on material being sewed on a sewing-machine by means of the needle-bar, as shown in the patent granted to H. W. Fuller on the 5th day ot'June, 1860; but,

Having thus described my in vention, I claim as newand desire to secure by Letters Patent-- 1. The tuck-marker A, for use with a sewingmachine, made and operated substantially as above described.

2. Marking parallel lines for tucks, or for the seaming or perforating of material on a sewing-machine, by means of a marker which is operated by a presser-bar having a positive vertical motion, substantially as above described.

JAMES BOLTON.

\Vituesses:

WM. F. MoNAM'AnA, M. M. LIVINGSTON.

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