US296568A

US296568A - Julius l

Info

Publication number: US296568A
Authority: US
Publication date: 1884-04-08
Anticipated expiration: 1901-04-08

Description

Nrrnn STATES P TENT STEAM DAM PER REGULATOR.

SPECIFICATION forming part of Letters Patent No. 296,568, dated April 8. 1884.

Application filed August 16, 1853. (No model.)

To all whom it may concern:

Be it known that I, J ULrUs L. Honnre, of Jersey City, in the county of Hudson and State of New Jersey, have invented a certain new and useful Improvement in Steam-Damper Regulators, of which the following is a specification. V

The object I have in view is to produce a damper-regulator for steam-boiler furnaces which will be simple in construction and efficient and certain in operation. To accomplish this object I provide proper connections between the damper of a steam-boiler furnace and a steam-motor which is worked in both directions by the steam-pressure, and this motor is controlled by a piston, puppet,

or other valve, which is moved by the pressme of the steam directly thereon, opposed by a suitable counter-balance, preferably made adjustable to change and adjust the valve to work at different pressures. The steam-motor is of peculiar construction, it being a differential motor, consisting of opposing moving steam-pressure surfaces of differentareas, the surface of smaller area being subjected constantly to the steam-pressure and keeping the damper normally open, while the steampressure upon the larger surface is controlled by the valve. These opposing steam-pressure surfaces are preferably in the form of two plungers projecting into two steam-chambers and made in one piece, or connected directly together and to one end of a pivoted lever connected with the damper, or the opposing plungers may be separate parts'connected to such lever on opposite sides of its pivot and acting oppositely thereon. The chamber in which the small plunger works is connected directly with the steam-space of the boiler, and is subject constantly to the boiler-pressure. A. passage connects this first steamchamber with the second steam-chamber, or that in which works the plunger of larger area. This passage is kept closed, when the boilerpressure is normal, by a piston,-pnppet, or other form of valve, upon which the steam acts directly, and provided with an adjustable counter-balance overcoming the normal steampressure. .Vhen this pressure is exceeded,

however, the valve is moved and the passage exposed for the same purpose.

between the two steam chambers opened, ad mitting steam into the second chamber and producing a steam-pressure upon both plungers. A differential action takes place, the plunger with larger area overcoming that with smaller area, moving the pivoted lever and closing the damper. When the steam-pressure is again reduced to normal conditions, the counterbalance overcomes the steam-pressure and thevalveis moved in theopposite direction, closing the passage between the steam-chambers. The condensation of the steam will relieve the pressure on larger plunger, permitting the smaller plunger to move the lever in the opposite direction, and even assisting this movement by the partial vacuum which is produced by the condensation. The damper is thus opened, as it was closed, by the positive action of the steampressure through the diiferential motor. To produce quicker ac tion, if desirable, the movement of the valve to close the passage connecting the steam-chambers may also open a shifting-passage from the second steam-chamber into the air, permitting the escape of the confined steam in the-second steam-chamber and instantly relieving the pressure upon the larger plunger. The counter-balance of the valve may be a weight adjustable upon a lever pivoted to the outside of the shell of the device and connected with the valve, or a spring may be used made adjustable by a screw-cap, through which passes loosely the stem of the valve. This permits, as with the exposed lever, of the movement of the valve by hand in case it should stick in its case. The lever to which the plungers are attached is The case containing the parts of the device may be cast in one or more pieces. The plungers and the valve app simply fitted to the passages in which they move, no stuffing-boxes or packing being used, and hence the regulator is sensitive in its action, the movement not being retarded by the friction caused by such devices. The leakage of steam is inconsiderable, and cannot affect the relative or differential action of the plungers, since the steam flows constantly into one or both chambers of the regulator. The lever and damper connections are counterbalanced by the plungers or by other means,

I controlling piston-valve G. The plungers E 2o to make the movement uniform in both directions and more sensitive.

In the accompanying drawings, forming a part hereof, Figure 1 is a vertical section of a steam-damper regulator embodying my invention, connections with the steam-space of boiler and the damper being shown; Fig. 2, a similar view'of a modified vform of the apparatus; and Fig. 3, a sectional view, showing a spring counter-balance.

Like letters denote corresponding parts in all three figures.

A is a case or shell inclosing three chambers, B, O, and D. The chambers Band C are steam-chambers, in which work the steamplungers E F, of different areas, forming the differential motor, while chamber D is intermediate between B and O, and contains the F may be made in one piece, and be slotted to receive the head of the lever H, pivoted to the shell A, in which case the steam-chambers B 0 will be located one above the other, or such plungers may be separate, as shown in Fig. 2, and be connected by links a b with lever H, on opposite sides of its pivot, the steamchambers B 0 being arranged horizontally instead of vertically. The lever H is connected by link 0 with arm (Z on the shaft of damper I, located in the furnace-flue J, or any other suitable connections may be employed.

K is the steam-space of the boiler, and a pipe, 0, leads thence to the chamber B of the regulator. The valve-chamber D opens into steam-chamber B, and the piston-valve G is subject constantly at its lower end to the steam-pressure in chamber 13. The connection between an opening, f, leading into the second chamber, 0, and a passage, 9, in the valve G, is closed by the valve when at the lower limit of its movement; but when the valve is raised by the steam-pressure the opening f is brought into line with the passage g through the valve and the steam-chambers B and O are connected. A snifting-passage, h, may be provided, which is brought into line with the opening f wh e11 the valve is depressed. The piston-valve is counterbalanced by a weight, h, and exposed pivoted leveri upon which the weight is adjustable, such lever being connected to the valve-stem, so that the valve can be moved by hand by moving the lever. The plungers can also be moved by hand by moving the lever Instead of a weight for the counter-balance, a spring, 70, Fig. 3, may be used, adjusted by ascrew-cap, Z. Thevalve-stemmpasses loosely through cap Z, so that the valve can be moved by hand in case it should stick in its chamber.

\Vith the construction shown in Fig. 1 the weight of the two plungers is intended to counterbalance or nearly counterbalance the long arm of the lever and connecting parts, so that the operation will be uniform in both directions and be more sensitive, and with theattached to a cord passing. over a sheave and connected with the longarm of the lever, or a spring suitably arranged.

It is evident that, without departing from the spirit of my invention, the piston-valve of the regulator may be arranged to act in the reverse manner to that described, the valve normally connecting both steam-chambers and keeping the damper open by the preponderance of the larger plunger and an increase of steam-pressure above the normal causing the passage between the two steam-chambers to be cut off and the damper to be closed by steam-pressure upon the smaller plunger.

Vhat I claim is- 1. In a steam-damper regulator, the combination, with damper-connections, of a steammotor working the damper and moved in both directions by steam-pressure, and a valve controlling the motor and acted upon directly by the steam-pressure, substantially as set forth. I

2. In a steam-damper regulator, the combination, with damper-connections, of a steammotor working the damper and moved in both directions by steanrpressure, avalve 0011-.

trolling the motor and acted upon directly by the steam-pressure, and a counter-balance, substantially as set forth.

3. In a steam-damper regulator, the combination, with damper-connections, of a steammotor working the damper and moved in both directions by steam-pressure, a valve controlling the motor and acted upon directly by the steam-pressure, and an adjustable counterbalance, substantially as set forth.

4. The combination,with a steam-boiler-furnace damper, of a differential steam motor connected with the boiler, and connections between them whereby said damper is operated by variations in the steam-pressure, substantially as set forth.

5. In a steam-damper regulator, the combination, with damper-connections, of the opposing plungers of different areas, the steamchambers containing said plungers, a constant steam-connection with the chamber having smaller plunger, and means for opening and closing a steam-connection with the chamber having larger plunger, controlled by variations in steam-pressure, substantially as set forth.

6. In a steam-damper regulator, the combination, with damper-connections, of opposing plungers of different areas and the valve controlling the admission of steam to the plungers, substantially as set forth.

7 i In a steam-damper regulator, the combil tial motor, the valve, and the snifting-passage, 1o nation, with damper-connections, of the opsubstantially as set forth.

posing plungers of diti'erenh areas, a steam- This specification signed and witnessed this oonnectionwith'the chamber having; smaller 14th day of August, 1883. a 5 pion er, and a valve openin and olosin a connection between the oha ibers, substZ-n- JULIUS HORNIG tially as set forth. Witnesses:

8. In a steam-damper regulator, the combi- \VM. H.1IEADO'WCROFT,

nation, with dampeneonnect-ions, of differen- I EDWARD H. PYATT.