US393925A - Cutter for button-hole sewing-machin es - Google Patents

Description

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GUTTBR FOR'BUTTON HOLE SEWING MACHINES. I No. 393,925. Patented Dec. 4, 1888.

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J. H. REED. CUTTER FOR BUTTON HOLE SEWING MACHINES. No. 393,925.

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JAMES REED, or LYNN, MASSACHUSETTS, ASSIGNOR TO THE GLOBE BUTTONHOLE MACHINE COMPANY, or KITTERY, MAINE.

CUTTER FOR BUTTON-HOLE SEW ING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 393,925, dated December 4, 1888.

Application filed March 21, 1888. Serial No. 267,967. (No model.)

in Button-Hole-Stitching Machines, of which the following is a full, clear, and exact de scription, reference being had to the accompanying drawings, forming a part of this specification, in explaining its nature.

The invention relates to a mechanism-or device in a button-hole stitching and barring machine for cutting or forming an eyed button-hole slit, and it is represented as applied to the form of machine described in my Letters Patent of the United States, No. 378,217, dated February 21, 1888.

Referring to the drawings, Figure 1 is a view in perspective of the central and upper parts of the machine provided with my invention. Fig. 2 is a view, part in elevation and part in cross vertical section, upon the line x w of Fig. 1. Fig. 3 is a plan of the clamp-plate and clamp and a portion of the work-plate. Fig. 4 is a section upon the line y y of Fig. 3, also representing in elevation the cutter. Fig. 5 is a view principally in vertical section of the button-hole-cutting devices. Fig. 6 is a view in plan of a section of material representing a cut or slit button-hole. Fig. 7 is a detail view in plan. Fig. 8 in a 'section on the dotted line of Fig. 7.

A represents the bed-plate of the machine; a, the clamp-plate, which is provided with the usual forwardmovement, partial rotation, and continued forward movement customary in this class of machines, and the mechanism for providing it with these movements is of wellknown construction.

B is the upper straight eye-pointed needle, and B the lower straight eye-pointed needle.

0 is the button, in which the throat c is formed, and upon which the clamp plate is guided and turned. It also acts to provide a portion of the button-hole-cutting device, having formed therein a slit, depression, or recess, 0, (see Figs. 4 and 5,) which receives a portion of the cutter 0 which cuts the straight part of the button-hole slit. This groove or recess 0 is in line with the section 0 of the guiding-groove c in the work-plate A, and

which guides the movement of the clampplate. There is also secured to the clampplate in a manner to permit its feed movement a block or piece, I), (see Fig. 5,) which has a bed, (I, in continuation of the recess 0 of the button (3, and an eye-cutter, (1, formed by an upward-extending preferably cylindrical section sharpened at its upper edge, and the hole (1 of which extends through the block D and forms an escape-passage for the pieces removed from the fabric. 7

The block is attached to the under surface ofthe clamp-plate to slide thereon and to be carried thereby, and it is kept in contact with the edge of the button by means of a yielding pressure. In the drawings Ihave represented the springs (1 (See 3,) which bear against the shoulder (1*, (see Figs. 4 and 5.) This 0011- struction serves to constantly keep the block in contact with the edge of the button, even when the clamp-plate is in the position which it occupies at the beginning of the stitching of the button-hole, and this is the position of the clamp-plate when the button-hole is cut.

It is of course desirable to cut the buttonhole slit and punch the eye immediately before or upon. the starting of the machine and after the work has been placed upon the clamp-plate and stretched and secured thereto by the work-clamps; and it is also necessary that the clamp-plate should feed the in aterial to the sewing devices in the ordinary way after the slit and eye have been formed, and this movement of the clamp-plate in relation to the cutting-block D is obtained by making the connection between the clamp-plate and the block D a yielding one, which permits the advancing movement of the clamp in relation to the block and throat, the block remaining stationary until the clamp-plate is turned, when, of course, it turns with it, still bearing against the throat, but not performing any function until it is again returned to its origi nal position.

Arranged above the clamp-plate is the cutter 0 which forms in connection with the recess 0 and bed (1 the slit of the button-hole, and the pressure block or anvil d, which operates in connection with the eyelet-cutter d to form the eye of the button-hole. This cutter c and the block (1 are represented as supported by a head, (1", and as detachably secured thereto; and the head is formed upon the end of a rod or bar, (7 supported at the end of thearm (I of the machine and adapted to have a vertical movement imparted to it by means of the rock-shaft (7", having bearings at (7 and connected with the rod (l by the link (7 and with the start-motion trcadle by means of the link (I and leverd, which is connected with such treadle, the intention being to cut the slit and eye and start the machine by one movement of the treadle.

In operation upon the movement of the:

for clamping the material upon the clamp-plate is like that described in my patent, No. 378,40l, dated February 21, 1888.

Having thus fully described my invention, i I claim and desire to secure by Letters Patent of the United States The clamp mechanism 5 1. Ina button-hole stitching and barring machine, the combination of the work-plate and work-clamp, the stitch-forming devices, and a button-hole-cutting device comprising the button U, having the recess the block D, carried by the clamp-plate and having the eyelet-cutter (1', provided with a hole, (1 and a bed, (I, the anvil (1, and cutter 0 a block or head, (1, carrying said cutter, a reciprocating bar upon which said block is mounted, and a lever-connecting device for reciprocating said block, substantially as described.

2. The combination, in abutton-hole-stitching machine, of the stitch-formin g devices, the clamp-plate and its clamps, the button having the slit or recess 0, the block D, having the eyelet-cutter d, and bed (I, carried by the clamp-plate and arranged to slide upon the same toward the button, and held in contact with the edge of the button by a spring, said spring, the anvil d and cutter 0 a block or head, (1, carrying said cutter and anvil, a reciprocating bar upon which said block is mounted, and a lever-connecting device for reciprocating said block, substantially as described.

JAMES H. REED.

Vitnesses:

F. F. RAYMOND, 2d, E. P. SMALL.

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