Untitled record

E. MINGAY.

Stove Grate.

No. 28,102.

Patented May 1, 1860.

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N. PETERS. Photo-Lithographer. Waehington. D. C.

UNITED STATESPATENT OFFICE.

EDWARD MINGAY, OF BOSTON, MASSACHUSETTS.

STOVE-GRATE.

Specification of Letters Patent No. 28,102, dated May 1, 1860.

To all whom it may concern:

Be it known that I, Edward Mingay, of Boston, in the county of Suffolk and State of Massachusetts, have invented an Improve5 ment for Operating the Grate of a Stove or House-Furnace; and I do hereby declare that the same is fully described and represented in the following specification and the accompanying drawings, of which—

Figure 1 is a top view of a grate and its supporting ring as provided with my invention. Fig. 2 is a longitudinal section. Fig. ‘ 3, a transverse section, and Fig. 4, a front elevation thereof.

In such drawings, A, exhibits a circular grate which is supported on a shaft, B, by means of a journal a, extended from the center of the grate and through the shaft.

The rear end of the shaft, B, rests in a 20 bearing, b, formed in a ring C, which circumscribes or is arranged concentrically with the grate. The equivalent of such ring would be that part of a stove or furnace which might immediately surround a grate. 25 Furthermore, in front of the grate there is a tubular shaft, D, which is supported in a bearing c, formed in the ring as shown in > Figs. 1 and 4. Through the said tubular shaft, D, the shaft, B, extends, the bore of 30 the tubular shaft being cylindrical so as to allow said shaft to be easily turned on the shaft, B. Each of the said shafts, at its front end is made square or prismatic as shown at, cl, or, c, in order that a key or 35 lever may be applied to it.

A crank or arm, E, extends upward from the inner end of the tubular shaft, D, and is furnshed with a slot, /, to receive a stud, g, extending from the circumference of the 40 grate. The said parts, E, and, g, so formed and applied, I, term the “ slotted crank connection.” f When in a horizontal position, the grate rests on a strut, i, extending from the ring 45 and arranged with reference to the shaft of the grate as shown in the drawings.

By applying a key lever to the tubular shaft, D, and turning such shaft on the shaft, B, with a reciprocating motion, the 50 grate may have short horizontal reciprocatl ing movements imparted to it, so as to shake ashes through it, when a mass of coal or fuel may be resting on the grate; and furthermore, for the purpose of freeing the grate from coals, it may be turned from a 55 horizontal into a vertical position, either by simply turning the tubular shaft, D, farther distance or by applying a key lever to the shaft, B, and turning this latter shaft.

I lay no claim to a combination composed 60 of mechanism for rotating a grate horizontally on a central pivot, and mechanism for tipping such grate into a vertical position; nor to either of the modes of constructing such combination as is shown in the United 65 States Patent, No. 9297, No. 16538, or No. 21410, in neither of which, the shafts for effecting the rotary and tilting movements of the grate are arranged concentrically and with one extending into and entirely through 70 the other so as to project from or beyond the same side or the front of the stove, such being the case in my invention. By my arrangement I save the necessity of cranks on opposite sides of the stove. I also avoid 75 the disadvantages of the swing lever and its application to a stove as shown in the said Patents Nos. 16538 and 21410.

One great advantage of my invention over many others for operating a grate, consists 80 in both shafts B, and D, being carried through one hole in the side of any stove or furnace to which the invention may be applied.