US109867A - Improvement in ice-axes and picks - Google Patents

Description

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Lettersl Patent No. 109,867, dated December 6, 1870; antedated Nvember`25, 1870.`

IMPROVEMENT IN 'ICE-AXES AND PICKS.

The Schedule referred to in 'these Letters Patent and making part of thesame.

To all yich-0m Iit may' concern:

Be itkuown that I, J OHX N. BUXNELL, of Unionville, inthe county'ot' Hartford and State of' Connecticut, have invented a .newiand improved Ax and li'ck, ot' which the following is a full, clear, and exact description, reference being had to the accompanyinv drawing forming part of this specitieation.

'lhis invention relates to an' ax and pick For cutting and breaking up icc, and for other uses; and

lt consists in the novel constrnctionof the head or blade, and mode 0I' attaching the same to the handle, where-hy a serviceable implement is obtained without forging, and at very small expense.

ln the accompanying drawing, which illustrates my inventiou` Figure 1 is a side view of an ax and pick,-

Figure 2 is a top view ofthe same; A

Figure 3 is a central section taken parallel with the blade; and

,Figure 4 is a' central section taken atright angles to lig.

Similar letters of reference indicate corresponding parts in the several gures.

A is the blade B, the stock, and 4 C, the handle, into the end of which the stock is secured.

The blade A is made of ordinary steel plate of suitable thickness. The plate is first cut into straight strips ot' a Width equal to the intended length of .the blade, and than cut transversely, by shears or otherwise, in reversely oblique directions, to `produce. a

number of blades.

The simplest way of cutting up the strip will beto feed it obliqncly to the shears, turning it over after Y every eut, so that the broad edge of'one blade and the pointed end of another will be alternately'cut t'ronithc same edge of the strip, and there will be no wasteof' material. The blade is then ground to an edge at the broad end l), and to avpoint at the other end, c.

The stock B isof malleable cast-iron, cast with a screw-threaded shank, d, for screwing into the handle, and with a slot in its head of 'a width and taper corresponding with the thickness and taper of the blade.

The blade A, made of steel plate as before described,

is driven into the taper slot in the stock B, and ahole is th en drilled transversely through the blade and stock for the reception of a'rvet, (t, by which they are secured rmly together.

.lhc blade A may be hardened and tempered sepa i'ately, or after having been inserted and riveted into the stock.

What I claim asmy invention,'and desire to secure by Let-ters Patent, is-

lhe ax and pick, composed of the taper blade A, of steel pla-tc, the-slotted and shanked stock B, handle. O, and the rivet a, constructed as herein described.

- ,JOHN N. BUNNELL.

Witnesses FRED.A HAYNEs, R. E. RABEAU.

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