US238303A - Rotary cutter for trimming the edges of boot and shoe soles - Google Patents

Description

- W. DQOROUTT. VRotary Cutter for Trimmng'the, Edges lof B001; and

Shoe Soles.

No. 238,303. Patented March 1, 183|.

UNITED STATES PATENTy Trice.

1 WILLIAM D.OROUTT, OF BOSTON, MASSACHUSETTS.

ROTARY CUTTER FOR TRIMMING THE EDGES OF BOOT AND SHOE SOLES.

SPECIFICATION forming part of Letters Patent- No. 238,303, dated March 1, 1881.

Application led January 6, 1879. l

To all whom it may concern:

Be it known that I, WILLIAM D. ORCUTT, of Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Rotary Cutters for Trimming the Edges of Boot and Shoe Soles, of which the following, taken in connection with.4 the accompanying drawings, is a specification.

My invention relates to that class of rotary cutters consisting of a series of cutting-blades arranged about acommon hub; and it consists in certain, peculiarities of construction of the blades, more fully described below.

Figure l is a perspective view of one form of rotary cutter embodying my invention. Figs. 2 and 3 are perspective views (enlarged for greater clearness) of the upper portion of one of the blades. Fig. 4 is a cross-section, enlarged, illustratin g my improved cutter as used.

The blades d of my improved cutter have a at front face, c, a dat rear face, b, and a top surface, c. A number of ridges, 1 2, extend across this top surface or circumferentially of the cutter, making what is called a molded 7 or fancy surface, which is the converse of the sole-edge desired, every ridge 2 2 making a corresponding depression in the sole-edge, the ridge l at the side of the cutter, and when in use next the rand-guide takes ont the rand or welt.

`The main feature of my invent-ion consists in the blade thus formed with a flat front face and a molded or fancy top surface the converse of the sole-ed ge, and having the ridge lor the ridges 22, either or both extending across its top surface-that is, extending from front to back, as shown in the drawings, my improved cutter having a series of such blades, the cutting-edges of each blade extending to one side of the cutter to adapt it for use on the edge of the sole next the upper, and each cutting-edge having the same relation with the axis as all the others. Each blade d is shown in this instance as a distinct piece secured to a hub, d', substantially as in United States Patent No. 82,402, to Harrington, dated September 22, 1868. Myinvention, however, does not relate to the mode or process of manufacture, but to the article of manufacture; and

the blades and hub may be in one piece and,

constructed by any suitable mode or process too well known to need description, andIdisclaim, as any part of my invention, both the cutters and both the modes of manufacture described in the patent to Harrington above named, and in the patent to Brown, No. 45,294, dated November 29, 1864.

The iiat front faces, a, of the blades are not radial, but are so inclined as to make each blade slightly hooking, and thereby form a knifeedge at the intersection of the fiat front face with the top surface, c, and its ridges l 2 2. This isvery desirable, for if the front faces, a, be not so inclined the tool will be ascraper rather than a rotary cutter.

The blades are made quite thick fromA front to rear, so that they maybe ground back as they become dulled,and they are ground only on their front faces, a, these faces being always maintained Aat substantially the same pitch. The grinding is done with a flat grinding-surface, (the dat side of asmall emerywheel,) and does not alter at all the shape of the cuttingedge of the blades. The tops c and ridges 1 2 2 are inclined rearward to give the necessary clearance, as will be well understood.

I am aware of the Patent No. 207,395, to Corthell, but in that cutter each blade is fiat on top, and its front face is molded, the cutting-edge being formed bythe intersection of the at top and molded front face, and the ridge corresponding to the ridge 1 of my cutter is across the front face of the blade, or nearly radial, instead of across the top c of the blade, or nearly circumferential, as in my cutter. The same is true of the ridges corresponding to the ridges 2 of my cutter. Then the ridge 1 is at one side of the front face, as in Oorthells cutter, the height of the projection above its base is limited by the necessary closeness together of the blades. Moreover, the depth of cutis always less than the height of the projection. The main object of my invention is to provide a sole-edge cutter in which the depth of cut is the same as the height of the projection, and in which the height of the projection is not limited by the closeness together of the blades. I am also aware of the patents to Brown and Harrington, above mentioned, but both those cutters are wholly unsuited for trimming sole-edges, and both lack the ridge 1 IOO Ito the axis of the cutter, substantially as described.

2. A rotary cutter for trimming sole-edges, 15 the blades d of which are each provided with a flat front face, a, and a slightly eccentric outer 0r peripheral end, c, having formed thereon the end ridges, 1 and 2, extending circumferentially across said face, substantially as 2o and for the purposes described.

Executed at Boston, Massachusetts, this 2d day of January, A. D. 1879.

WILLIAM D. ORCUTT.

Witnesses N. C. LOMBARD, G. H. Donn.

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