US233652A - Grate - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1 E. A. WOOD. Grate.

No. 233,652. Patented Oct. 26, 1 880;

WITNESSES: v INVENTDRA iu illflvwL flziya hmlzg NPEIERS, PnOTb-LITHDGHAPMER, WASHINGTON, n O.

2Sheets-Sheet 2. E. A. WOOD. Grate.

(No Model.)

No. 233,652. Patented Oct. 26,1880.

INVENTDR:

WITNESSES:

UNrran STATES ATENT Orrteno EDWIN A. WOOD, OF UTIOA, NEW YORK.

GRATE.

SPECIFICATION forming part of Letters Patent No. 233,652, dated October 26, 1880.

Application filed August 30, 1880. (No modeh) T 0 all whom it may concern:

Be it known that l, EDWIN A. Woon, of Utica, in the county of Oneida, in the State of New York, have invented a new and useful Improvement in Grates, of which the following is a specification, reference being had. to the accompanying drawings, in which Figure 1 isa view in perspective, and Fig. 2 is a vertical sectional view from left to right in front of the truunions of Fig. 1. Fig. 3 is a sectional "iew on the line w :v of Fig. 2, showin g the points of support of the central grate. Fig. 4 is a plan view of the bottom of the a11- nular rin The object of my invention is to provide a grate for stoves, furnaces, &c., which can be easily and speedily freed from ashes and clinkers from center to circumference.

My invention consists in certain devices, hereinafter more fully set forth, for reciprocating the external ring simultaneously with the turning or oscillating of the central portion or main grate upon its trunnions, whereby the ashes and cinders are loosened from the center to the circumference of the grate, and are by the same operation deposited in the ash box or pit.

Referring to the drawings, A designates the base of the furnace, in which the ring D is supported by means of trunnious E. The annular portion or ring D is provided with radial projections or bars 0, which incline downward toward the central portion or grate F. The annular portion or ring D supports, by means of a series or number of lugs or projections, at, an outer ring, B, said ring being provided with a projecting flange, a, by which it is supported on the lugs or projections to of the ring D. These lugs or projections to are of sufficient length to permit of an annular space or air-passage, b, between the outer and inner rings. The outer ring, B, is provided on aportion of its lower edge with teeth 0, which mesh into a segmental pinion on the main grate shaft or arm, as hereinafter more fully explained.

F is the main grate, made in oval form in horizontal section, as shown, so as to project upward into the body of the furnace. This form of grate, which I am aware is not new, prevents the accumulation of ashes at the center of the grate, secures a more extended gratesurfacc, and insures a more thorough circulazion of air up into the body of the-furnace or fire-chamber. The rear end of the grate F is provided with a trunnion, which tits into a hole or bearing, D, in the inner ring, D, as shown in Fig. 3. The outer end of the grate F is provided with an extended arm, g, by which this end is supported, by a staple, 'i, or other suitable device, to the top of the ash-box or base. The arm or trunnion g is also provided with a segmental pinion, G, which meshes into the teeth 0 on the underside of the outer ring, B, so that when the grate Fis turned or oscillated by means of a crank or wrench, 70, applied to the outer end of arm or trunnion g, the outer ring, B, will be horizontally reciprocated simultaneously with the vertical oscillation of the grate F.

To prevent the displacement or working up of the outer ring, B, two or more lugs or brackets, h, are bolted or cast thereon, which project inward so as to come under the lower edge of the inner ring, D.

\Vhen the grate is to be cleaned or freed from ashes or clinkers, by the turning or rockin g to and fro of the crank or wrench on the end of the arm g the center gratc,F, is turned orroeked on its trunnions, and at the same time the outer ring, B, is reciprocated, thus forcing or directing theashes and clinkers downward, owing to the inclination of the projections or bars 0 on the inner ring into the angle between the rings and the grate F, from which point they are discharged into the ash box or pit.

A projecting arm, k, (see Fig. 4,) is cast on the stationary ring D, which, when the grate is in position, comes just under the roof or top of the ash-pit mouth, and prevents both ring D and central grate, F, from rising.

I am aware that it is not new to construct grates with convex surfaces.

I am also aware that grates having a reciprocating ring and an oscillating concavo-convex grate have been combined; but in such cases the two motions of reciprocation and oscillation have not been simultaneous.

Having thus fully described my invention, what 1 claim, and desire to secure by Letters Patent, is

1. In a grate for stoves, furnaces, 850., a vertal pinion G and outer movable ring, 13, protically-oscillating grate, and a horizontally-re- Vided with the teeth or rack (J, whereby the ciprocating ring, arranged and combined as outer ring, B, is given areciprocating motion shown and described, whereby a joint and siand the grate F a simultaneously oscillating 5 multaneous action of the grate and ringis obmotion, as set forth. a

tained by one and the same crank or operat- T ing device, as set forth. I EDWIN 2. The combination of the fixedinner ring, Witnesses: D, and the oscillating grate F, mounted or se- FRANCIS G. WOOD, [O cured therein as described, with the segmenl MORRIS H. AYLSWORTH.

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