US361322A - Heating-drum - Google Patents

Description

(No Model.)

D. s. RICHARDSON.

HEATING DRUM.

Patented Apr. 19, 18.87.

N, PETERS, Plmto-lmogmplmr. wmhlngton. D. C.

UNITED STATES PATENT OFFICE.

DWIGHT SUMNER RICHARDSON, OF BROOKLYN, NEV YORK.

HEATING-DRUM.

SPECIFICATION forming part of Letters Patent No. 361,322, dated April 19, 1887.

Application tiled June 18, 1884. Serial No. 135,382. (No model.) Patented in CnnadaMarchlO, 1884, No. 18,920.

. To a/ZZ whom it may concern:

Be it known that I, DWIGHT SUMNER RICH- ARDSON, a citizen of the United States, residing in Brooklyn, in thel county of Kings and State of New York, have invented certain new and useful Improvements in Heating-Drums, of which the following is a full, clear, and exact description. y

rlhe invention relates particularly to heatradiating drums which are employed in connection with the combustion-chambers of hotair furnaces; but my improvements may be applied in heating-drums which are to be used in other connections.

In United States Patent N o. 272,326, issued to me February 13, 1883, is shown a drum the walls of which are cast in one continuous piece of metal, t-he space inclosed therein being divided horizontally by a diaphragm, two par-- 'allel tlues being thus formed for the passage of the products of combustion, the object ot' the construction being to direct the ascending currents ina zigzag course, irst toward the front and then toward the rear of the drum, so as to insure thorough utilization of the heat which is 'contained in such products. In United States Patent No. 279,666, issued to me June 19, 1883, the same general characteristics are embodied; but the top andsides only of the drum are of one continuous casting, the bottom being aseparate and distinct plate or sheet attached to the walls at their base in any suitable mamier, and provision is made for either casting the diaphragm with the Walls or for its separate formation and subsequent attachment thereto. These constructions combine various advantages, and in their perfect utilization of the heat contained in the products of combustion, and in their effectual prevention of the escape of deleterious gases from the drum into the surrounding hot-air chamber, their use has been attended with satisfactory results. It has been found, however, that under certain circumstances different portions of the walls of the drum expand and contract unequally, sometimes causing fracture of some one of the parts, to the consequent detriment of the purity of the contents of the air-chamber; and to avoid this I devised an invention which is describedin my application Serial No. 107 ,823, filed October 1, 1883. In that invention it was my object to provide in a drum which possessed the general characteristics of those described in my two former patents, above referred to, means for the certain prevention of fracture of the partsthrough unequal expansion and contraction of the same; and this was accomplished by constructing the radiator in two distinct flue-sections, one of whichrested loosely upon the other, the diaphragm or flue-plate being loosely tted at a point near the j unction of the two sections. In connection with the description of that invention, I represented and described certain modiwhich the diaphragm or flue-plate was not but was cast with one or with both of the two flue-sections; and it is this modified construc tion which forms the subject of this invention, the same having been disclaimed in the application above referred to.

In the drawings, Figure 1 represents a vertical longitudinal central section of a hot-air furnace which has one form of my improved radiator applied thereto, the diaphragm being cast with the upper section, which rests by its edges within a packing-receptacle which is formed upon the lower section. Fig. 2 represents a vertical section through the body of the `radiator, the edges of the upper section resting in the packing-receptacle of the lower section,'as in Fig. l, but having the diaphragm cast with the lower section. Fig. 3 represents avertical section through the body of the radiatoror drum, the edges of the upper section resting in the packing-'receptacle of the lower section, as in Figs. l and 2, bnt having a double diaphragm, one plate thereof being cast with each of the two sections. Fig. 4 represents a vertical section of the body of the drum, the construction being similar to that which is shown in Fig. 3, but having the inner wall of the packing-receptacle made of less vertical extent than the outer wall.

Under the construction described liability to fracture is avoided; no portion of theproducts of combustion can pass from the lower flue to the upper ue, except through the orifice provided therefor in the liuc-plate or diaphragm; all escape of gas is prevented; the parts are readily assembled for use and as readed forms of the described construction, in-

placed loosely Within the radiator or drum,

ICO.

ily removed from place when occasion requires l it, and the heat contained in the circulating currents is thoroughly utilized.

Referring to the parts shown in the drawings, A is the upper section, and A the lower section, of the radiator. B is the diaphragm when east with the upper section, and B the diaphragm when east with the lower section.

I do not herein broadly claim a radiator or heating-drum which consists of two distinct sections, one of which rests loosely upon the other, and a diaphragm which is placed at or near the point oi'junetion of the two sections,

and which divides the same into two parallel horizontal fines.

Having thus described my invention7 what I desire to claim and secure by Letters Patent isl. A heating-drum or radiator which eon sists ofa lower iiue section, an upper iiue-sec 2c tion, and a double diaphragm, one member of 25 the diaphragm constituting an integral portion ol." the lower fine-section, and the other member of the diaphragm constituting an integral portion ofthe upper flue-section.

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lVitnesses:

JAMES B. TAYLOR HENRY ',l. RICHARDSON.

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