US168737A - Improvement in automatic dampers - Google Patents

Description

S'. F. GOLD; Automatic-Damper.

Patented Oct. H, 1875.

N. PETERS. PHOTO-UTHOGRAPNER. WASHINGTDN. D C:

-U1\TITED STATES Pia-m SAMUEL F. eo-Ln,or ENc'LEwoon, newJnnsnv.

' IMPROVEMENT IN AUTOMATlQ-DAMPERS.

Speci ficationforming part 0. Letters latentNo.168,737, dated October 11, 1875; application filed Jul laistt. v

To all-whom it mag concern:

Beit known that I, SAMUEL F. GoLD, of Englewood, in the county of Bergen and State of New Jersey, have invented certain Improvements in Automatic Dampers, of which the following is a specification:

This invention is designed to furnish a simple, cheap, and efficientautomatic damper, adapted to be used advantageously to regulate the fires of steam-heatin g apparatus, hotair furnaces, and other analogous structures.

My invention is a device adapted to accomplish this purpose by means of the displace ment of water by undue heat of the fire; and consists in the improvements hereinafter more fully set forth.

Figure 1 is a top view of a section of a smoke pipe with my apparatus attached. Fig. 2 is a vertical longitudinal section of the same. Fig. 3 is a plan of a diaphragm which forms a portion of the condensingpart of the apparatus.

A is a piece or section of a smoke-pipe lying in a horizontal position. B is a damper, at-

" tached to said smoke-pipe by a hinge, a, as

shown, so that it may be opened away from the smoke-pipe in such a manner as to allow the external air to enter. and reduce the draft. 0 is a tank attached to the under side of the damper B, and connected, by a pipe, D, to the receiver E, the pipe D extending nearly to the bottom of the tank G,'as shown in the drawings. b is a screw-plug in the damper B, to open and close an aperture into the tank 0, through which the latter may be supplied with water when necessary. This plug must fit steam-tight. The tank 0, as will be observed, is located inside of the smoke-pipe, and should be thin in the direction of the diameter of the pipe, as shown by dotted lines in Fig. 1, so as not to unduly obstruct the draft.

The receiver E is made of three parts, 0 c 0, connected by small openings in the center, the upper one having a small opening into the external air; and these parts 0 are sub divided by diaphragms d, which have small openings near the periphery at 6, thus circuitously connecting the chambers formed by the parts a and the diaphragms d, the object of these small openings being to afford passages for the air to escape. from or enter the receiver without allowing much opportunity for the evaporation of the water; and for this purpose these apertures between the-parts 0,

and through the diaphragms, should be very minute, a sixteenthof aninch in diameter being fully large enough, and in most cases larger than is necessary. This receiver should be made of thin plates of metal, so as to allow the ready transmission of heat.

ThetankGshould be filled nearly filllof w ater, leaving only small space for the formation of steam; and being thus filled its weight is designed to be sufficient to keep the damper closed, and the tank completely inclosed in the smoke-pipe, and this position of the parts will be retained till the heat of the products of combustion in the smokepipe becomes sufficient to produce a pressure of steam in the tank strong enough to force the water in r it back through the pipe D into the receiver, when the receiver, with this addition to its weight, aided by this diminution of Weight in the tank, will open the damper, the pipe D operating as a lever, with hinge on as a fulcrum. The opening of the damper allows air to enter the smoke-pipe, and reduces the intensity of the draft and the action of the fire. It also admits external air into contact somewhat with the sides of the tank.

When the temperature has become sufiiciently reduced to allow it the water returns from the receiver to the' tank by its own gravity, and the damper is consequently closed. V

These movements are not generally very sudden or marked in practice; but usually the damper opens gradually as the fire becomes too intense, and gradually closes again as it falls, remaining partly open when the condition and action of the fire requires a limited action of the damper.

It is obvious that this damper may be also attached to and used upon a vertical smoke pipe or flue, care being taken to preserve the relative arrangementvof the parts with reference to each other and to a horizontal plane- I have described and shown the damper B, tank 0, pipe D, and receiver E as being all rigidly connected to each other, and the pipe D also performing the service of a lever, so

that when the damper is operated the parts above mentioned all vibrate togetheron the axisata; andthis I regard as the best con struction, and as having decided advantages over any other union of the parts which now occurs to me. This is not, however, indispensable so long as the same result is produced by means substantially the same, as,

for example, the lever and pipe may be of separate pieces insteadof in .one piece. The tank may remain in a fixed position, and be connected to the receiver by a flexible or jointed connection, the receiver being connected by a lever or equivalent device to the damper, and various other changes in the constructiommightbe adopted without subheat the receiver shall have sufficient capacity to contain it, and prevent its overflowingfinto theroom. I claim as my-invention.

1. .The combination of the tank 0, receiver E, and pipe and lever D, arranged relatively to each other substantially as hereinbefore set forth.

2. The combination of the tank (J, pipe and lever D, receiver E, and damper B, substantially as hereinbefore set forth.

3. The combination of the tank 0, pipe and lever D, receiver E, damper B, and smokepipe A, substantially as hereinbefore set forth.

4. The receiver E, constructed in parts 0, having openings between them, substantially as hereinbefore set forth.

SAMUEL F. GOLD. Witnesses: V i

B. A. SMITH, Tnos. P. How.

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