US707855A - Grate. - Google Patents

Description

No. 707,855. f' Patented Aug. 2s, |902.

s. MAAG.

GRATE.

' (Application led Feb. 7, 1902.)

(No Model.)

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UNITED STATES PATENT OEEICE.

GEORGE MAAG, OE AKRON, OIIIO, AssIGNoR To TI-IE XXTIIOEN'TURY HEATING AND vENTILATING COMPANY, OE AKRON, OHIO.

SPECIFICATION forming part of Letters Patent N o. 707,855, dated.A August 26, 1902.

Application led February 7, 1902. lSerial No. 92,997. (No model.)

Q0 rv/ZZ whom, t may concern:

Be it known that I, GEORGE MAAG, a citi- Zen of the United States, residing at Akron, in the county of Summit and State of Ohio, have invented a certain new and useful Improvement in Grates, of which the following is a specification.

My invention has relation to grates for furnaces, stoves, dsc.; and the objects of rnyinvention are to produce a grate which can readily and easily be cleared from accumulated ashes and the like and one in which all parts are readily accessible; and a further object is to make The front portion of the grate capable of being lowered when desired and finally to pivot the grate so that its entire surface is easily capable of being rotated.

To attain the aforesaid objects, my invention consists in the peculiar and novel'con struction, combination, and arrangement of parts hereinafter described and then specifically claimed, reference being had to the accompanying drawings,forrning a part of this specification, and in which drawings similar reference-numerals indicate like parts in the different gures.

In the accompanying drawings, Figure lis a plan of my improved grate with the ashpit surrounding it; Fig. 2, an inverted planof the grate and ash-pit. Fig. 3 is a section at the line o; n: of Figs. l and 2, and Fig. 4 a front elevation looking from the bottom of Fig. 1.

In the drawings, l is an ash-pit for furnaces or stoves having sloping sides and having at the level of the upper surface of the grate to be described a iiange on which the fire-pot is placed. Extending from the inside of the ash-pit below the grate-level is an arm .2. This arm is either made in a separate piece and bolted or screwed to the inside face of the ash-pit or else is made integral there-` with, the former construction being preferable. The inner end of this arm 2 terminates in a cylindrical head perforated vertically to form a journal-bearing 3. For the sake of strengthening the arm 2 there are two arms 13, extending from the journal-bearing head to the inner walls of the ash-pit and there fastened.

The grate portion properk consists of two parts 4 and 5,so constructed that when placed together they form substantially a round grate with projecting lugs on their entire outer periphery. The portion4of this grate vhas depending from itsV under surface` apin 6, arranged to enter the bearing 3, on which it is free to swing horizontally. This pin 6 is placed squarely in the center of the entire grate, and the extended or free end of the portion 4 is designed to swing with the pin 6 as a pivot. On the upper face of the arm 2 and integral therewith is an arm 14, made in the arc of a circle with the pin 6 as a center. This arm Vis designed to support the swinging end of the portion 4 as it rotates. Extending from the under face of the portion 4 laterally are two trunnions 7,properlyimounted and integral with the main body portion 4. The

other portion 5 of the grate is arranged to inclose more or less closely all sides of the portion 4 excepting its rounded outer edge. The portion 5, hereinafter designated as the dumping-grate, has on either side of the opening therein,which enables it to surround the portion 4, two lugs 8, in which are deep notches to inclose the trunnions 7 of the portion 4, thereby supporting the dumping-grate by a pivotjoint with the portion 4. These trunnions 7 and lu gs S form such a union between the two portions of the grate as will cause them to rotate horizontally together With the pin 6 as an axisby means of a projecting arm 9, passing through the doorway of the ash-pit. On either side of the doorway ot this ash-pit are journals l0 in alinement with each other and generally integral with the body of the ashpit, and between these journals is swung a bail 1l. This bail 1l is used to support the extended arm 9, and when the bail is in the position inthe figures the entire upper surface of the grate will be in one plane. The dumping portion 5 of the grate is lowered into the position shown by dotted lines in Fig. 3 by giving a semirotation to the bail 11, which permits the arm 9 and the dumping portion 5 to be lowered or inclined toward the doorway of the ash-pit, but retains it there from complete descent to the groundline. This bail 11 is arranged when swung IOO ures to be prevented from falling forward by encountering'a stop 12 on one of the journals lO, and this stop is so placed that the bail when in an upright position will slightly overhang and rest against it. For ordinary shaking the arm 9 is rocked horizontally, causing the entire grate to move together, and this is done while the bail l1 is raised. When it is desired to remove large clinkers, the bail ll is lowered with the arm 9, permitting ready access through the doorway of the ash-pit to substantially all parts of the surface of the grate, and the portion 4 of the grate remains horizontal during this operation. In rotating or shaking the grate horizontally the portion 4 swings with the pin 6 as its center, and its outer end is supported by the concentric arm 14 and is thus prevented from being` broken by the weight resting upon it. In removing the grate for repairs or other reasons the dumping portion 5 is easily raised from engagement with the trunnions '7, which permits the portion 4 to be lifted from its pivot.

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

1. The combination in a grate for furnaces and stoves, consisting of a two-part grate pivotally hinged together, a pivot for the entire grate mounted on one of said portions, an arm mounted on the other portion and means as a swinging bail to vary the inclination of one of said portions.

2. The combination in a grate for furnaces and stoves of a two part grate a lever mounted on one of said parts aswinging bail mounted in said ash-pit arranged when swung in one position to keep said gratel level, and when swung in the other direction to lower one of the portions of said grate into an inclined position.

In testimony that I claim the above I hereunto set my hand in the presence of two subscribing witnesses.

GEORGE MAAG.

In presence of- O. E. HUMPHREY, C. P. I-IUMPHREY.

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