US372774A

US372774A - Ephbaim j

Info

Publication number: US372774A
Authority: US
Publication date: 1887-11-08
Anticipated expiration: 1904-11-08

Description

(No Mbdel.)

E; J. STORY.

' FIRE CHAMBER. No. 372,774.

@LUITNEEE'EQ ilurrsn STATES PATENT rrice.

EPHRAIM J. STORY, OF WASHINGTON, DISTRICT OF COLUMBIA.

FIRE-CHAMBER.

SPECIFICATION forming part of Letters Patent No. 372,774, dated November 8,1887,

Application filed July 24, 1886. Serial No. 208,976. (No model.)

To all whom it may concern:

Be it known that I, EPHRAIM J. STORY, a citizen of the United States, residing in Wash ington, in the District of Columbia, have invented certain new and useful Improvements ber which shall be simple and inexpensive,

strong and durable, which shall resist the action of heat, so as to be secure against every tendency to warp or to bend, which shall have large radiatingsurface, and which shall have means for agitating the contents of a grate when such grate is reciprocated.

With this object in view the invention consists in various novel elements and in various novel combinations of elements in a fire-chant ber, as will be hereinafter indicated in the description and claims.

In the drawings, Figure 1 is a rear perspective elevation of a fire-chamber in which my improvements are embodied. Fig. 2 is a detailperspective, partly in section, on the line w 00 of Fig. 3. Fig. 3 is aperspectiveview looking toward the interior of the rigl1t-hand portion'of the chamber. Fig. 4 is a rear elevation of the central section of the fire-chamber, the intersecting radiating and strengthening ribs being shown in a slightly-modified form. V

The fire-chamber A consists of a central rear section, A, and left and right hand end sections, A? and'A each of the three sections being formed in a single piece of metal. The rear section, A, at a point somewhat below its mid height, is provided with a rearwardlyoverhanging projection, a, and it is provided also with flaring vertical end portions, a and of", which have orifices o, a horizontal top plate, a and intersecting strengthening and heat-radiating ribs a The end section, A is composed of the two vertical portions a? and a and the connecting longitudinally horizontal overhanging portion a the cap 'or top piece, a, preferably curved as shown, the flaring end portion, a, having orifices 0, the front plate or flange, a, and the intermediate cell-like strengthening and radiating ribs, to.

Within the angle formed at the junction of the lower vertical portion, a, with the connecting longitudinally horizontal portion a U one or more projections or protuberances, a. a, each having a perforation to receive a supporting-pin, a, is formed with the end section or casing, A such projection or re-enforce serving to strengthen the parts at their point of union and to furnish a long and firm bearing for the supportingpin, which may be provided with a shoulder to bear against the projection and witha securing-nut, a. The end section, A as will be readily inferred from the foregoing, is the exact counterpart of the section Afl-that is, it is in all respects identical with it in construction and function of the parts, and differs only in their opposite arrangement. 4

The overhanging connecting portion a serves in the reciprocation of any grate or grates which may be applied for use in connection therewith to clear the top surface of the ends of the same, and thus prevent clogging by the collection of cinders, slag, or coals between the grate and the lower vertical end portion, a". The sections A A A are secured together by means of bolts b, which extend through the orifices 0 and o.

It will be understood that, unlike ordinary fire-chambers, this chamber is to be used without alining, the burning fuel resting in direct contact with the metallic walls of the structure.

outer surface'of these metallic walls, whether crossing and supporting each other at right angles, as best seen in Figs. 1 and 4, or at some other angle, serve to strengthen the plates thus subjected to intense heat against every tendency to warp or to bend and to reduce to a minimum their liability to fracture; and they also present to the contiguous airwarming chamber a very extensive heat-radiating surface, each rib extending outwardly from its vertical base a distance of preferably not less than an inch and one-half.

In the drawings the overhanging shoulder or clearing projection is represented as in two different transverse planes, which meet near the transverse center of the chamber; but it is obvious that any other desired form might be employed without affecting the operation of the parts or the principle of the invention.

The intersecting ribs, integral with the ICO In Figs. 2 and 3 of the drawings I have represented portions of a reciprocating grate substantially like that in United States patent issued to me August 3, 1886, and numbered 346,830, and the clearing projections herein described are well adapted to operate advantageously in connection with a grate of that character; but any right-and-left reciprocating grate, extending under these overhanging clearing projections may be employed with equal advantage in connection with them.

Itwill be understood that, inasmuch as my fire-chamber is composed wholly of metal and intended and adapted to be used without either interior lining or exterior covering, I do not claim any construction in which either linings or coverings constitute a part of the structure.

Having thus described my invention, I clain1- 1. A metallic fire-chamber which is provided with rear and end exterior integral strengthening and radiating ribs and with an interior overhanging shoulder or clearing projection, in combination with a reciprocating grate, the contents of which, when the grate is shaken, are agitated by such clearing projection.

2. A fire-chamber which has rear exterior integral horizontal and vertical strengthening and radiating ribs which overhang a lower portion of the space behind the chamber and end exterior integral horizontal and vertical ribs which overhang the ends of the ashpit.

3. A fire-chamber which has end sections which are provided with integral intersecting strengthening and radiating ribs and which each overhang theash-pit, and which has also a rear section which is provided with integral intersecting strengthening and radiating ribs and which overhangs the space directly behind the ash-pit.

4. The combination, with the rear section, A, having plain inner surface and exterior overhanging projection a, of the end sections, A and A each having vertical portions a" a in different planes, which are united by a longitudinally horizontal connecting portion, a which overhangs the ash-pit, substantially as and for the purposes set forth.

I 5. In a fire-chamber, an end section which hasaninwardly-extendinglongitudinallyhori zontal grate-clearing projection and a perforated enlargement or re-enfl ce beneath and l integral with such grateclea .ng projection.

I 6. The combination, with he end sections, of the grate supporting pin oeneath the overhanging projection thereof, extending through I each section and projecting into the ash-pit,

as shown and described.

7. The herein-described firechaniber, consisting of central rear section, A, having intersecting strengthening and radiating ribs and rearwardly-overhanging projection a, and

l the end sections, A and A, each having intersecting strengthening and radiating ribs and an inwardly-extending overhanging projection, each of these sections, with its ribs l and projection, being formed in a single piece, and the entire chamber being adapted to be used without lining or covering, as set forth.

EPHRAIM J. STORY.

Vitnesses:

W ALTER S. DODGE, V. C. DODGE.