Improvement in draft-pipes for heaters
US 204170 A
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Description (OCR text may contain errors)
M. A. SHEPARD. Draft-Pipe for Heaters. -No. 204,170. Patented May 28,1878.
ATTEST: INVENTOR? Wfiw" I 41% 4, 6% f f UNITED STATES PATENT OFFICE.
MORRILL A. SHEPARD, OF LEBANON, ILLINOIS.
IMPROVEMENT IN DRAFT-PIPES FOR HEATERS.
Specification forming part of Letters Patent No. 204,170, dated May 28, 1878; application filed November 16, 1877. v
2 is a detail perspective view of the-draftpipe B.
The drawing shows a fire-receptacle, A, which may be a fire-place, stove-grate, or heater. To it are connected the smoke-pipes O O, which, under my improvement, may be formed into an arch shape, or arranged so as to pass and meander through several rooms, or around, inside,or under a public or private building, and then connect with the draftpipe B, as shown, at the opposite end of which is connect-ed the exit-pipe D.
As soon as a fire is kindled in the fire-box the draft-pipe B receives the first heat, and the air inside of the same, by virtue of said heat, expands and rushes out through the exit-pipe D, creating a partial vacuum in the draft-pipe B, which creates a strong draft through the 'smoke and heat pipes O C. After this a constant draft is maintained, and the heat distributed Wherever the pipes may pass. 7
The exit-pipe D (or pipes O G,if desired) may pass along and near the floor, or even down under the floor, and the heati'rom the same may be admitted to the room above by registers, in order to have convenient heat for warming.
The draft-pipe B may be of anysuitable shape; but I prefer to use a flat oblong pipe,
the advantages of which are, that as the sides of the pipe are close together, the air, as it passes through it, will be more thoroughly heated and its velocity accelerated. This draft-pipe B may be placed at bottom, middle, near the top, or in the drum of the firereceptacle A, in any situation so as to be kept at a higher temperature than the outside pipes. I The process of draft by the use of the pipe B in my improvement may be utilized for drawing ofi' and consuming noxious gases.
1 claim as my invention-- 1. The fire-receptacle A, draft-pipe B, smoke and heating pipes O U, and exit-pipe D, all combined substantially as shown and described.
2. The pipe B, attached, as described, in
the most suitable place in a stove or heater,
so that the air within it may be superheated, thereby accelerating the draft through the pipes C O, with which it is connected, substantially as and for the purposes described and set forth.
MORRILL A. SHEPARD. Witnesses: Y ERNST GRAUEL, ADAM TRABAND.