US548429A - Steam-heater - Google Patents

Description

(No Model.)

W. H. CURTIS.

STEAM HEATER.

No. 548,429. Patented Oct. 22, 1895.

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c UNITED STATES PATENT OFFICE.

WILLIAM H. CURTIS, OF DETROIT, MICHIGAN.

STEAM-H EATER.

SPECIFICATION forming part of Letters Patent No. 548,429, dated October 22, 1895.

Application filed June 21,1895. Serial No. 553,524. (No model.)

To all whom it may concern.-

Be it known that I, WILLIAM H. CURTIS, a citizen of the United States, residing at Detroit, in the county of Wayne and State of llIichigan, have invented certain new and usef ul Improvements in Steam-Heaters, of which the following is a specification, reference being had therein to the accompanying drawings.

The invention consists in the construction of a steam-heater intended for use in drying lumber, heating buildings, &c., and belongs to that type in which the air is forced through a heating-chamber to the place where it is intended to be used.

The invention particularly consists in the construction of a heater comprising hollow bases, suitable steam supply and drip pipes, and a series of nested heating or radiatingpipes connected thereto, the pipes being so constructed and arranged that they are approximately of equal length, so as to produce as nearly as possible a perfect and even steam distribution, and further to take care of the expansion and contraction without damage to the apparatus.

The invention further consists in the construction, arrangement, and combination of the various parts, all as more f nlly hereinafter described.

In the drawings, Figure l is a perspective view of my heater, composed of a series of like sections coupled with a fan for forcing the aircurrent through the heating-chamber. Fig. 2 is a sectional perspective View of one section of the base.

I prefer to make my heater in divisions, each complete in itself, having a suitable steam-supply and drain pipe, so that the size or heating area may be varied by simply adding to or taking away the desired number of sections. Such construction also enables me to control the heat in the various divisions separately, so thatI may regulate the temperature of the air in the heater as desired, or so that I may, if necessary, use part of the division for exhaust-steam and part for live steam.

As all of the divisions are alike, a description of one will sufiice for all.

A is the fan for forcing the air into the heating-chamber B. In this drying-chamber I have shown four heater-divisions. Each consists of the separate hollow base-sections O C. These base-sections have an inclined bottom a, which is adapted to discharge into the trough or drain b at the sides, as plainly shown in the drawings.

D is the steam-supply pipe leading into the base at one side.

E is a drain or drip pipe connected to the troughed portion of the bases. The top of the base-sections are provided with a number of series of aligned apertures c. In these apertures are secured the risers F of the radiating pipes, the outer risers being connected by the horizontal pipes G, while the inner risers are connected through a series of loops or return coils H so constructed as to give to each pipe as nearly as possible a uniform passage for the steam and also to provide a hinged connection between the heating-pipes supported upon the base-sections, so as to take up satisfactorily the expansion and contraction thereof without danger of breaking the joints.

By an inspection of Fig. 1 it will be seen that the first of the inner pipes for the coils H has but one coil, while the inner pipes have a gradually-increasing number of coils, to give the effect above described. The effect of this construction is to make a series of aligned nested radiator sections supported upon and connecting the two separate base-sections of each division. It is evident that any number of these divisions may be arranged side by side, and that if a separate valved controlled drain and steam-pipe is provided that the heat in each may be separately controlled. WVhere a series of these divisions are arranged in a single heater, I preferably place the diaphragms I between the divisions and prevent the air from going too freely through the otherwise unobstructed space beneath the bases. With this construction I get a large steam-space in the base-sections, sufficient to supply uniformly all the radiating-pipes connected thereto, and I also get the full benefit of the radiation from the base-sections in addition to the uniform radiation from all parts of the system.

What I claim as my invention is- 1. A steam heater comprising two hollow base sections, steam supply, drain pipes for the bases, and a series of nested radiating IOU pipes of approximately equal length connecting the tops of the base section's, having horizontal sections to take up the expansion and contraction.

2. A steam heater comprising two hollow base sections, a steam supply entering one section, drain pipes and a series of nested radiating pipes arranged with the coils of one pipe surrounded by the adjacent pipe connecting the top of the base sections, the radi ating, pipes being of substantially uniform length.

3. A steam heater comprising two separated hollow base sections, steam supply and drain pipes, a nested series of aligned radiating pipes connecting the tops of the base sections, outer connecting pipes being substantially inverted U shaped, the inner pipes comprising a number of loops or return bends, to produce a substantially uniform length of all the pipes.

4. In a steam heater, the combination of the casing, a series of divisional heaters therein, each comprising separated base sections, a series of nested aligned radiating pipes conmeeting the tops of the bases the pipes arranged with the coils of one pipe surrounded by the adjacent pipe, the base sections having the inclined bottom a the trough b, and the steam supply and drain pipes, substantially as described.

5. In a steam heater, the combination of the casing, a series of divisions, each comprising the separated hollow base sections, the nested radiator pipes connecting the base sections, and the diaphrazms I between the base sections, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM H. CURTIS.

\Vitnesses:

M. B. ODOGHERTY, 0. F. BARTHEL.

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