US717893A - Heel-breasting machine. - Google Patents

Description

PATENTED JAN. s, 1903. w.- J. MITCHELL. HEEL BREASTING MACHINE.

APPLICATION FILED APR. 16, 1902.

N0 MODEL.

' fir/92810 5 Tm: mamas Pmnspm mom-urns UNITED STATES PATENT OFFICE.

WINFIELD J. MITCHELL, OF LYNN, MASSACHUSETTS, ASSIGNOR OF ONE-HALF TO NEWTON J. TILTON, OF LYNN, MASSACHUSETTS.

HEEL-BREASTING MACHINE.

SPECIFICATION forming part of Letters Patent No. i17,893, dated January 6, 1903.

Application filed April 16, 1902. Serial No. 103,13 7. (No model.)

To all whom it may concern:

Be it known that I, WINFIELD J. MITCHELL, of Lynn, in the county of Essex and State of Massachusetts,have in vented certain new and useful Improvements in l-Ieel-Breasting Machines, of which the following is a specification.

This invention relates to machines for breasting so called. Louis heels having IO breasts which are curved from the top lift to the intersection of the breast with theshank portion of the sole, the curvature being such that the heel cannot be breasted by a reciprocating knife which moves from the top lift to- [5 ward the sole while cutting the breast.

In another application for Letters Patent of the United States for improvement in heelbreasting machines, filed January 20, 1902, Serial No. 90,371, I have shown a breastingmachine in which the breastingknife is adapted to breast the heel by a movement substantially parallel with the tread-surface of the heel or the face of the top lift, the knife being curved so that its cutting edge in moving from end to. end of the breast imparts thereto the form which characterizes the breast of a Louis heel.

My present invention has for its object to prevent the end of the cutting edge adjacent to the shank portion of the sole from cutting into the sole during the breasting operation; and to this end it consists in a heel-breastiug knife adapted to form the breast of a Louis heel and provided with a runner adapted to bear on the shank portion of the sole of the boot or shoe and prevent the cutting edge from entering the shank portion, as I will now proceed to describe.

Of the accompanying drawings, forming a part of this specification, Figure 1 represents a perspective view of the heel-breastin g knife above referred to. Fig. 2 represents an elevation of the knife looking upon the concave side thereof and showing the runner and a part of the knife-carrier. Fig. 3 represents a section on line 3 3 of Fig. 2. Fig. 4: represents a section on line 4: 4 of Figs. 2 and 3.

The same reference characters indicate the same parts in all the figures.

In the drawings, a represents a breasting- 5o knife, the back of which is substantially straight in longitudinal section, or from its cutting edge 7 to the shank, and is curved in cross-section between the non-cutting edges 9 and 10. The front side of the knife is correspondingly curved, the lower portion of the front side being beveled at 12 to intersect the back and form the cutting edge 7, which has the contour of the breast of a Louis heel, so that when the knife is moved across the heel, from side to side thereof, in a path which is parallel with the tread-surface of the heel the cutting edge will form a breast which is curved inwardly and backwardly from the front end of the top lift to about the center of the height of the heel and then outwardly and forwardly to the shank portion of the sole of the boot or shoe.

In carrying out my invention I provide a gage I), having an acting face 13, which is substantially flush with the non-cutting edge 9 of the knife and constitutes a guard which bears on the shank portion 3 of the sole during the breas ting movement of the knife and prevents the cutting edge 7 from scoring the shank portion while moving across the same. Said gage is preferably formed as a separate piece from the knife and on a shank b, which has a slot 12 coinciding with a slot a? in the knife-shank. The two shanks are adjustably secured to the reciprocating carrier 01, which operates the knife, by a screw e, engaged with the carrier and passing through the slots at b the screw having a head e. The gage b prevents any tendency of the knife to sink into or score the shank portion 3 while moving across the shank in breasting the heel, which tendency would exist if the gage were not employed.

It will be understood that the heel is sup- 9o ported bysuitable means, such as those shown I knife and is arranged to bear on the shank in my above-mentioned application, suitable portion of the sole and prevent the cutting means being employed to reciprocate the edge from entering the sole. knife. In testimony whereof I have affixed my sig- 5 I claim nature in presence of two Witnesses.

A heel-breastiug knife which is curved in its cross-section and substantially straight in WINFIELD MITCHELL its longitudinal section, combined with a gage Witnesses: having an acting. face which is substantially O. F. BROWN, IO flush with one of the non-cutting edges of the E. BATOHELDER.

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