US289145A - Apparatus for skiving boot and shoe tips - Google Patents

Description

(No Model.)

J. A. SAFPORD.

' APPARATUS P011 SKIVING BOOT AND SHOE TIPS.

Patented Nov. 27. 1883..

a. PETERS. PMXb-Liflwgrapfur. Waihingt Nrrnn STATES JOSEPH A. SAFFORD, OF BOSTON, ll/IASSAGHUSETTS.

SPECIFICATION forming part of Letters Patent No. 289,145, dated November 2'7, 1883.

Applicaiion filtd August 8, 1883. (X0 model.)

To @ZZ whom it may concern:

Be it known that I, Josnrn: A. Sarronn, of Boston, in the county of Suifolk and State of Massachusetts, have invented certain Improvements in Apparatus for Skiving Boot and Shoe Tips, of which the following is a specification.

This invention relates, chiefly, to that class of apparatus or machines for skiving boot and shoe tips or other articles of leather in which the tip is placed in a mold or depression in a moving bed, and presented by said bed to a fixed skiving or splitting knife, the form imparted to the tip by said mold or depression causing it to be beveled uniformly from all parts of its margin toward its central portion by a single edgewise movement while in contact with the fixed knife.

The invention has for its object to enable a tip to be skived by the employment of an ordinary leather-splitting machine having afixed knife, 8, feed-roll, and a gage-roll, said rolls cooperating in presenting the leather to the knife; and the invention consists in the combination, with said rolls and knife, of a loose sheet or plate containing a depression or orifice adapted, when the sheet and a tip laid against it are passed between said rolls, to receive the central portion of the tip and hold it in a concave-convex form, so that said central portion will not be acted on by the knife, or so. that the knife will remove a beveled shaving from the outer portion of the tip, leaving the central. portion wholly or nearly uncut.

The invention also consists in said sheet or plate as an article or tool to be used with a leather-splitting machine, as I will now proceed to describe.

Of the accompanying drawings, forming a part of this specification, Figure 1 represents a transverse section of the feed and gage rolls and knife of a leather-splitting machine and my improved sheet or plate. Fig. 2 is a side view of said sheet. Fig. 3 is a section on line m r, Fig. 2. Fig. 4 represents a view of the inner side of a tip before skiving, and Fig. 5 a similar view after skiving.

The same letters of reference indicate the same parts in all the figures.

In the drawings, (t represents the gage-roll, b the feed-roll, and c the fixed knife, of aleathersplit-ting machine, such, for example, as is shown in Letters Patent No. 230,895, granted to me August 10, 1880, to which reference is made for a fuller description of the arrangement and operation of said parts, which of themselves form no part of my presentinvention. The gage-roll is adjusted toward or from the knife to determine the thickness of the shaving removed from the stock, and the feedroll is provided with devices for controlling its pressure in the manner described in said patent. (1 represents a sheet or plate made. preferably, of leather-board, vulcanized fiber, or other comparatively flexible but uncompressible material which will not injure the edge of the knife 0 by accidental contact there with. Said sheet is of such thickness that it can pass between the gage-roll a and knife 0 without being out by the latter. In the sheet (2, 1 form an aperture, 6, corresponding to the form of theAsip to be skived, but smaller than said tip, one side of the sheet being beveled on all sides of said aperture, so that the margin of the aperture is brought to a thin edge, as shown in Figs. 2 and 3. The sheet (I has no positive connection with the gage-rolls.

Operation: A tip, 5 to be skived is placed against the sheet cl with its dressed side inward and its central portion coinciding with the aperturee. The sheet and tip are then presented to the rolls a b, the latter being corrugated or roughened, as usual, and are grasped by said rolls and moved toward the knife 0. The sheet d passes between the gageroll a, and the knife without being acted on by the latter; but the tip is held by the sheet at such a distance from the gageroll that it will be acted on by the knife, excepting its central portion, which is forced by the pressure of the feed-roll into the aperture 6 of the plate, and therefore escapes the knife. The result is that a beveled shaving is removed from the flesh side of the tip next the roll 0, said shaving being removed all around the margin of the tip, as shown by the unshaded part in Fig. 5, leaving the central portion (indicated by the shaded part in Fig. 5) in its original condition. The tip is thus beveled uniformly from its center in all directions to its margin by a single passage across the knife. I am aware that a bed of rigid material has been provided with a central depression or concavity to receive a portion of a counter to be skived, and hold the same in concavoconvex form while it is being acted on by a rotary cutter, the bed moving under the cutter, and the whole forming a special machine for skiving counters. I do not therefore claim such a bed or support for a piece of leather as my invention.

It will be observed that by the employment of the loose sheet (Z the splitting-machine is enabled to do the work that has heretofore required an expensive special machine.

If desired, the sheet cl may have a depres sion in place of the orifice e.

I claim 1. The combination, with the gage-roll a, feed-r0111), and knife 0, of the loose sheet (2, having an orifice or depression adapted to be interposed between the knife and the gageroll, and cause the knife to remove a shaving of varying thickness from a piece of leather interposed between said sheet and the feedroll, as set forth.

2. The improved device for use in skiving shoe -tips, the same consisting of the loose sheet (I, having an orifice corresponding to the form of the article to be skived, and adapted to be passed between the gage-roll and knife of a leathersplitting machine, as set forth.

In testimony whereof I have signed my name to this specification, in the presence of two 30 subscribing witnesses, this 6th day of August, 1883.

JOSEPH A. SAFFORD. \Vitnesses:

C. F. BROWN, A. L. WHITE.-

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