US232647A

US232647A - lewis

Info

Publication number: US232647A
Authority: US
Publication date: 1880-09-28
Anticipated expiration: 1897-09-28

Description

,P. R. LEWIS. Devio'efor Cutting Fabrics.

No. 232,647. yfatented Sept. 28, I880.

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PATENT EErcE'.

FREDEIQUE R. LEWIS, OF TROY, NEW YORK.

DEVICE FOR CUTTING FABRICS.

SPECIFICATION forming part of Letters Patent No. 232,647, dated September 28 1880.

i Application filcd January 21, 1860.

To all whom it may concern:

Be it known that I, FREDRIQUE R001) LEWIS, of the city of Troy, county of Rousselaer and State of New York, have invented certain new and useful Improvements in Devices for Cutting Fabrics and other Sheet Material, of which the following is a specification.

My invention relates to devices for cutting linen, cotton, sheeting-muslin, leather, or such other material as may be laid so as to cut blank forms through several thicknesses at one and the same effort.

My invention consists in constructing and arranging a series of vertical knives so that they maybe attached to each other and to the exterior of a block of the form required to be cut, with the knives so constructed with reference to each other and the block that the knives may connectedly cut a continuousline, and so that the form of the block may be varied, and the knives adapted to any form of block to cut its form in the material,the object being to cut, with one set of knives and differing blocks, the blanks required in the manufacture of collars, cuffs, boots, shoes, or other articles where like material is used, and without the necessity of a cutting-die blank for every required form.

My invention also consists in forming cutting beveled edges upon a connected series of vertically-arranged knives, constructed to attach to the exterior surface of aform-block, so that the knives shall present a connected serrated cutting-edge to the face of the fabric or material to be out.

In the accompanying drawings there are four figures illustrating my invention, and in all of which the same reference-letters are used to designate the same parts.

' Figure 1 shows a view, in perspective, of the manner of arranging a series of chisel-shaped knives around a form-board to cut a curve and lineallyconnected straight line. This view also illustrates the manner of securing the blades to the form-board by means of screws. Fig. 2 illustrates a top view of a series of connected blades arranged around a form-board to cut a curve. Fig. 3 shows one of the chiselformed blades or knives detached from the form-board, and illustrating the manner of forming a groove upon one side of the blade. Fig. 4 illustrates the blade upon the side the reverse of that shown at Fig. 3, with a tongue constructed upon the former, Fig. 4, which tongues into the groove of the blade next in contact, for the purpose of stiffening the con nected blades when attached to the formboard.

The several parts by which my invention is arranged to operate are designated by letterreference, as follows: The chisel-formed blades are shown at K K K K. The form-board around which they are arranged is designated at B, and the former are shown as having the recess 1%, into which the form-board fits, and this is made of metal or other suitable material, having the screw-holes S S 8' upon its exterior edge, which receive the thumb-screws 0. These latter pass through the blades, and when screwed into the form-board the blades are firmly held in place.

To prevent a lateral motion when under a cutting-pressure, each knife tongues vertically into the side of the knife adjoining, by means of the tongue T and groove G, .which are formed upon the opposite side of each of the blades.

Where a form having combined curves and connected straight lines is to be cut, narrow blades are employed to turn the curves and broader blades for the straight lines.

I do not desire to limit my invention to employ knives thus arranged to the particular form shown in the form-board B, for by the means shown the knives may be employed in the same manner with different form-boards to out a great variety of forms, and the manner of attaching and connecting the knives would remain the same.

For actuating power to operate the cutting device thus constructed, any one will answer that will produce a cutting-pressure.

By employing the beveled edges D D D of the blades a serrated cutting-edge is produced, and this serves where fabric is being cut to prevent the series of piled thicknesses from crawling laterally from under the knife, as the cutting commences with a puncture at the point of each blade.

Having thus described my invention, what screw-holes upon the exterior edge of the form- [0 I claim, and desire to secure by Letters Patboard, as herein shown and described.

ent, is- Signed at Troy, New York, this 20th day In a device for cutting fabric, leather, or of November, 1879. 5 other sheet-formed material a series of chiselforrned blades Which vertically tongue into FREDRIQUE HOOD LEWIS each other for lateral support, and are at- Witnesses: tached to an interior form-board by means of GEO. TLMMINS,

arecess and thumbscrew upon the former, and THOMAS CALWELL.