US184917A - Improvement in stove-grates - Google Patents

Description

NITED STATES PATENT OFFICE.

ISAAC A. SHEPPARD, 0F PHILADELPHIA, PENNSYLVANIA.

IMPROVEM ENT IN STOVE-GRATES.

Specification forming part of Letters Patent No. 184,9 1.7, dated November 28, 1876; application led October 5, 1876.

ing and heating stoves in whichv wood is used as fuel; and the object of my invention is to prevent the rapid destruction ofthe gratebars in stoves of this class.,n

In the accompanying drawing, Figure ll is a vertical section of my improved .grate for wood-burning cooking-stoves; Fig. 2, a plan view, and Fig. 3 a transverse section on the line 1 2.

A represents the front plate, a a the bars cast to the plate A, and B the bottom plate' of' the tire-place, the usual doors (indicated by the dotted line w) bearing against the iange e.

It has been a common practice to arrange the bottom plate B at a short distance from the under edges of the bars, the consequence of which is, that particles of the ignited fuel gain access to the space beneath the bars, where, under the iniuenee of strong currents of air necessarily introduced for supporting the eombustion'ot' fuel, the particles become sufciently hot to cause the rapid destruction of the said bars. l

To obviate this difficulty hollow b'ars, .resting on the bottom plate of the fire-place, have been adopted, as in the patent of M. L. Horton, No. 24,559, June 28, 1859, air passing into the bars from below, and escaping Yinto the flue of the stove.

My invention 'is based on this plan, and

consists in casting the hollow bars on the vertical bars ot' the front grate, so as to form zontal or nearly horizontal bars a, which are recessed on the under side, so as to form, with thetbottom platev B of the stove, channels open at the front and at the rear for the free passage of air.

The hollow bars are of the same width as the vertical bars, so that the former can oer no impediment to the free raking of the ashes from between the latter.

By making the hollow bars continuations of the vertical bars m, and casting the whole in one piece, simplicity and economy of construction are insured. y

For reasons above given I do not desire to claim, broadly, the combination of the bottom plate of a stove with recessed bars resting on the plate; but

I claim as my invention- The combination of the front platefA and its vertical bars m with the hollow bars a, the latter forming continuations of the said bars m, and the whole being east in one piecel and kadapted to a. wood-burning stove, as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses. v

ISAAC A. SHEPPARD. Witnesses:

HENRY HoWsoN, Jr.,

HARRY SMITH.

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