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Publication numberUS182746 A
Publication typeGrant
Publication dateOct 3, 1876
Filing dateJun 11, 1875
Publication numberUS 182746 A, US 182746A, US-A-182746, US182746 A, US182746A
InventorsAaecw B. Beown
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Improvement in systems of ventilation
US 182746 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)



Patented 0cb.3,1876.

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Specification forming part of Letters Patent No. IS2,746, dated October-1.` 3, 1876; application led June 11, i875.

To all whom it may concern:

Be it'known that I, AARON B. BROWN, of the city and county of Worcester, State of Massachusetts, have invented an Improved words, make a complete change of air as loften as may be desired. It can be used with either radiated heat or heated air, or both, as a means of warming, and is applicable to any space needing ventilation. Its nature is shown in the subjoined description of its apf plication to various rooms.

In the accompanying drawings, Figure l shows a section of a room :fitted with devices illustrating the application and working of my invention, Fig. 2 showing a plan of the b'edframe or draft-chamber adapted to hospitals, the same letters indicating similar parts wherever they occur.

A A A are the draft or exhaust flues, connecting with` the base-chamber B. This chamber is made back of the common base-board,

. which I raise a little from the iioor to make a passage into the chamber all along the base, or by using a capmolding a little above the base, as shown, I accomplish the same endopening a general draft near the bottom of the room-andfin large rooms I make use of the pillars D by making them hollow, and connected at the top to the exhaust or draft,

, and forming openings at their bases, and thus make the exhaust general.

In each of the exhaust-fines A I put a reverse-valve, C, hung on a pivot to turn easily, and weighted on one side so as to remain open, as shown, during the regular draft outward, and on any change or reversal of the current to close at once, (as shown in broken lines,) preventing any inward flow through these flues.

At M is shown a platform with chamber lunder it, upon which, in hospitals, a cot may be placed; the chamber under the platform to have free opening round it, and a connection with the exhaust-flue A, Fig. 2 showing a plan of the saine, with a portion of the top removed.

By flue A a gentle draft will be established at the lower part ofthe room sufficient to draw off as much air as may be necessary. I feed in `the fresh air at or near the top, making a cham,-

gusts or sudden currents, hanging the valves on pivots to turn easily, and weighting one side so as to hang, as shown, during the regular draft inward, and on any sudden flow to close, as shown in broken lines, and remain so until the gustor pressure passes, when they Open of their Own accord, working automatically. Should the closing of the valves be noisy they may be cushioned with rubber or other soft substance. The Vvalves E serve as safety-valves, preventing any outflow when the valves in A A are shut.

In large rooms I put a feed-flue, N, leading to the center-piece Gr, and give free discharge all round its` edge. For halls, churches, Sto., I make a passagealong the beams, king-posts, or moldings, as L, L', andK, connecting it to feed-fines, as at It, and making numerous feed apertures its entir'e length.. By these means I am enabled to give a diffused distribution to the infed fresh air, and admit it in a large quantity, if necessary, imperceptibly, and in accord with the exhaust on the lower part.

In ventilatinglarge rooms, orwhere a strong draft is necessary, the flues A A A may connect to one, and the draft be increased by heat or mechanical action, the entrance of the fresh air being controlled by the exhaust of the foul.

I am aware that draft-flues Opening directly ATEN Frio.

to different parts of a room are in use. These I do not claim.

What I claim as my invention is l. The arrangement and combination of the lues A A, drawing the air from the bottom of the room through the chamber behind the base-board B, said chamber having a general open connection to the room, and the direct inlet-f1ues I K With their di'used distribution, as above set forth and described.

2. The direct inlet-dues I K, having the gust-valvesG', in combination with the chamber behind the cornice F, or passages L, L',

and K, through beams, 85e., of large rooms, as in churches and halls, for diffusing theinflowing air in the manner and for the purposes described.

3. The chambered platform M, with its openings, in combination with the exhaust-dues A and feed-tides I, substantially as described.

4. The combination of the gust-valves G with the feed-dues, substantially as described.

AARON B. BROWN. Witnesses:


Cooperative ClassificationF24F7/00