US247790A - Hot-water boiler for heating greenhouses - Google Patents

Description

(No Model.) I 2 Sheets-Sheet 1.

E. WHITELEY.

HOT WATER BOILER FOR HEATING GREEN HOU$ES.

WITNESSES- 2 Sheets-Sheet Z. E. WHITELEY. HOT WATER BOILER FOR HEATING GREEN HOUSES. No, 241,790. Pate'ntsd Oct. 4,1381,

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{No Model.)

UNITED STATES EDWARD WHITELEY, OF AN'IRIM, NEW HAMPSHIRE.

HOT-WATER BOILER FOR HEATING GREENHOUSES.

SPECIFICATION forming part of Letters Application filed March 2S, 1981.

To all whom it may concern Be it known that I, EDWARD WEITELEY, a citizen of the United States, residing at Antri m, in the county ofHillsborough and State ot'New Hampshire, have invented certain Improvementsin Hot-Water Boilers for Heating Green' houses, Buildings, 850., of which the following is a full, clear, and exact'description, refe: ence being had to the accompanying drawings, making part of this specification, in which- Figure l is a perspective view of one of the two halves or portions of which my improved boiler iscolnposcd. view of a complete boiler constructed in accordance with my invention. Fig. 3 is a front elevation of the boiler, one half being shown in section. Fig. 4. is a side elevation of one of the two halves or portions of the boiler. Fig. 5 is an elevation of one of the bars which support the furnace-grate.

Portable hot-water boilers provided with interior smoke-fines and used for heating greenhouses, &c., have heretofore been made of a series of cast-iron plates put together with bolts, and having water-join ts made tight with iron cement. This construction is, however, objectionable, for the reason that the expansion and contraction of the metal is liable .to cause the cement to crack and become loose, causing the joints to leak, and when this occurs it is very expensive and often almost impossible to repair the boiler, as the cement or rustjoints cannot be tightened up, and the attempt to separate the plates at the joints is very liable to produce breakage of the parts, and thus injure the boiler beyond possibility of repair.

My invention has for its object to overcome all of these difficulties; and it consists in a hot-water boiler cast in two halves or portions, each of which is provided with a separate inclosed water space or passage having no direct communication. with that of the other portion when the two are put together to form a complete boiler, these two portions being united by means of ordinary bolts and cement, a smokejoint only being formed between them, by which construction the operation of casting the parts is greatly facilitated and the liability of leakage entirely avoided, as there are no waterjoints, each portion or half of the boiler consisting of a cored or seamless casting, while Fig. 2 is a perspective- Patent No. 247,790, dated October 4, 1881,

(No model.)

the two halves of the boiler can be used indepen denlly, if desired, for heating two separate greenhouses at different elevations, thereby enabling me to beat them uniformly, which cannot be easily accomplished with an ordinary single boiler.

In the said drawings, A B represent the two halves or portions of the boiler. which are provided with lugs 12, through which pass the bolts 0, by means 01 which the two portions are held together to form a complete boiler, as seen in Fig. 2, thejoint (I. being made tight by means of cement placed within the shallow grooves or depressions e f 9, formed in the adjacent sides of the portions A B. Each of the halves or portions A B is cast in a single piece, with a completely-inclosed water-space, h, Fig. 3, and a smoke fine or passage, i, leading from "the furnace O to the exit-opening k, to which the smoke-funnel is attached.

D E are openings communicating with the water-space h, with the upper one, D, of which the flow-pipe is connected, while the returnpipe is connected with the lower opening, E, the ordinary packed socket-joint being used at these points.

G is the base or bottom of the boiler,-within which is formed the ash-pit m.

H H represent the ash-pit doors, and I I the furnace-doors, these doors being arranged to slide to one side in horizontal guides or ways a.

19 represents the furnace-grate, which is made in independent sections, each section having journals, which rest in bearings 10 in two sup porting-bars, K, placed one at the front and the other at the rear of the furnace, the front journals, q, having square ends and being adapted to be rotated by a key or wrench applied thereto, when exposed, by sliding back the doors L L. The grate-supporting bars K'- rest on lugs or projectionso' 8, Figs. 3 and 4; and to facilitate the insertion of these bars K a rail or ledge, t, Figs. 3 and 4, is formed on each side of the furnace, these rails forming a track or way for guiding the bars K as they are pushed along until they drop onto the projections r s, where they are held in place by the adjacent ends of the rails t,- and by this construction I am enabled to insert the supporting-bars K with much greater ease than heretofore, as the necessity of holding up these heavy bars by the hand while fitting them in place is avoided, it being only required to place the supporting-bars on the rails and push them along until they drop into their places.

From the foregoing it will be seen that as each half of the boiler consists of a single cored or seamless casting completely inclosing its own water-space, which is entirely separate from and independent of the water-space ot'the other half and has no direct communication therewith, all liability of leakage is entirely avoided, as there are no \vaterjoints, the joint (1 between the two portions A B, when put to gether, being merely a smoke-joint, which can be easily kept tight, and consequently a boiler constructed in accordance with my invention can be kept in repair at a trifling expense, which is a very important consideration in boilers of this description, while its durability is increased to such an extent that it will outlast many times any boiler constructed, as heretofore, out of a series of cast-iron plates put togetherwith bolts and cement. Furthermore,

the cost is greatly reduced, as my construction enables me to cheaply produce a reliable boiler having a smoke flue or lines extending in a horizontal, or nearly horizontal, direction, which is a difficult and expensive operation when made of a series of cast-iron plates or pieces with separate water-j oints, as heretofore,

the water will flow from one portion or half of the boiler to the other.

\Vhat I claim as my invention, and desire to secure by Letters Patent, is-

1. A hot-water boiler formed of two halves or portions, A B, cast separately, and each provided with an independent inclosed waterspace, It, having no direct communication with that of the adjacent portion united thereto, substantially as and for the purpose set forth.

2. In a hot-water boiler having an interior smoke flue or fines, the combination of the two separately-cast halves or portions A B, each having a separate and independent inclosed water-space, it, connected together without a wateroint, so that a smoke joint, (1, only will be formed between them substantially in the manner and for the purpose described.

\Vitness my hand this 24th day of March, A. D. 1881.

E D WARD W H llELEY. ln presence of P. E. Tnsonnnaouna, \V. J. CAMBRIDGE.

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