US157145A - Improvement in peg-cutters - Google Patents

Description

A. WHlT-TEMORE.

Peg-Gutters.

Patented Nov. 24,1874.

I NVEN TOR W WWW 1"! M'Nlc CO. MOTQ'LIY' -394l PARK PLACIJLY.

' WINES ES ATTORNEYS UNITED STATES PATENT 6 AMOS WHITTEMORE, OF OAMBRIDGEPORT, MASSAOEIUSETTS.

IMPROVEMENT IN PEG-CUTTERS.

Specification forming part of Letters Patent No. 157,145, dated November 24, 1874 application filed September-l9, 1874.

To all whom it may concern:

Be it known that I, 'AMos WHITTEMORE, of Oambridgeport, in the county of Middlesex and State of Massachusetts, have invented a new and valuable Improvement in Peg-Outters; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being bad to the annexed drawings, making a part of this specification, and to the letters and figures of reference marked thereon.

Figure 1 of the drawing is a representation of a sectional view of my pegcutter. Fig. 2 is a top View. Figs. 3, 4, and 5 are detail views of the same.

This invention has relation to devices for cutting pegs out of boots and shoes wherein rotary cutters are employed; and it consists in a revolving self-clearing cutter-head, provided with two or more blades having convex bearing-surfaces, and so formed as to make a draw-cut, as will be hereinafter explained.

In the annexed drawings, A designates the cutter-stock, which is shaped somewhat like a shoe with the sole turned upward and inclined, as shown in Fig. 1. The upper side of the stock A has a circular recess, a, in it; also a central circular depression, I), in the center of which is a hub, 0, having a screw-threaded hole to receive a screw, (1. There is also a hole, 0, through the upper portion of the stock A, for the purpose of allowing a free escape of the bits of pegs. The stock A is constructed with a hollow shank, to which a tubular standard, B, is rigidly secured, having afianged base, B. Inside of the standard Bis a spindle, 0, carrying a belt-pulley, G, on its lower end, and a bevel spur-wheel, f, on its upper end. WVheel f engages with a spur-wheel, g, which is in the recess 1), and which has studs h on its upper end; also a beveled burr, as shown in Fig. 1. G designates my improved cutter-head, which is perforated to receive the studs h, and thus allow it to be secured to the wheel 9. The cutter-head and the wheel g are held in place by means of the screw 61, above referred to. The cutter-head shown in the drawings is provided with three blades, 70 k 70; but in practice more than three blades, or even two blades, would answer. The top of the cutter is convex, and the cutting-edge of each blade is curved and formed by under-beveling, as shown in Figs. 3 and 5. The bottom of the cutter-head is flat, and rotates on the flat bottom of the circular recess, so that during the operation of cutting out pegs the chips will be discharged through the hole 6, and will not clog the cutter.

Among the advantages of my cutter over others for removing pegs is that it can be so easily sharpened 'on a flat stone.

It will be seen by reference to Fig. 2 that I provide for lubricating the parts by means of passages r 1' formed in the stock A. The oil is put into the holes r, and by reason of the expansion of air in these holes the oil will be fed into the space b through the holes 4.

What I claim as new, and desire to secure by Letters Patent, is-

1. In a machine for cutting pegs, the convex rotary cutter-head G, provided with draw cutting-blades k, beveled and rounded, substantially as described, and applied in a stock.

2. The cutter-stock A, constructed with a circular recess, a, circular depression b, hub c, and the escape-hole c, in combination with the rotary cutters, substantially as and for the purposes set forth.

In testimony that I claim the above I have hereunto subscribed my name in the presence of two witnesses.

AMOS WHIT'IEMORE. Witnesses F. J. MASI, H. O. HOLLINGSHEAD.

FFIGE. T

Images