Improvements in Apparat is for Automatically Controlling the Position of Dampers for Steam Generator Furnaces.
Year: 1890

page_text: Date of Application, 18th Nov., 1890
Complete Specification Left, 14th Aug., 1891-Accepted, 19th S pt., 1891
PROVISIONAL SPECIFICATION.
Improvements in Apparat is for Automatically Controlling the
Position of Dampers for Steam Generator Furnaces.
1, THOMAS OWEN BATES of High Street Tunstall in the County of Stafford,
Engineer, do hereby declare the nature of this invention to be as follows:-
The object is to provide efficient apparatus for so operating and controlling the
position of dampers for admitting air to the furnaces of steam generators, that the
generation of steam shall correspond with the requirements and a practically
uniform pressure be maintained.
The invention consists
First. In the combination of a lifting diaphragm or its equivalent, with a double
faced stop valve and weighted lever in such manner that both the diaphragin and
stop valve are retained in position by the weighted lever.
Second. In combining the apparatus under the first part with any suitable
appliances for giving motion to dampers by steam pressure such as a diaphragm
and lever, steam connection being made from the stop valve to the damper
diaphragm.
When discs of india rubber or other like substances are used in the diaphragms a
layer of water or suitable liquid should be maintained between the actuating steam
and the disc.
Dated thin 17th of Novemba 1800
Per pro J. T. KING,
J. Johnson,
Agent.
COMPLETE SPECIFICATION.
Improvements in Apparatus for Automatically Controlling the
Position of Dampers for Steam Generator Furnaces.
I THOMAS OWEN BATES of High Street, Tunstall, in the County of Stafford,
Engineer, do hereby declare the nature of this invention and in what manner the
same is to be performed, to be particularly described and ascertained in and by the
following statement :-
The object is to provide efficient apparatus for so operating and controlling the
position of dampers for admitting air to the furnaces of steam generators, that the
generation of steam shall correspond with the requirements, and a practically
uniform pressure be maintained.
The invention consists
First. In the combination of a lifting diaphragm or its equivalent with a double
faced stop valve and weighted lever in such manner that both the diaphragm and
stop valve are retained in position by the weighted lever. A spring may be used
instead of a weight.
Second. In combining the apparatus under the first part with any suitable
appliances for giving motion to dampers by steam pressure such as a diaphragm
and lever, steam connection being made from the stop valve to the damper
diaphragm.
When discs of india rubber or other like substance are used in the diaphragms, a
layer of water or suitable liquid should be maintained between the actuating steam
and the dian

page_text: Figure
invention.
DESCRIPTION OF THE DRAWINGS.
is a vertical section, and Figure 2 a plan of apparatus under my
a is a bed plate secured in any convenient position 6 is a diaphragm or piston
chamber formed in the bed plate, c is a diaphragm fitting in the chamber b and held
in position by the cover d. e lugs attached to the cover d. f lever pivoted to the
lugs e. buffer resting on the diaphragm c and passing freely through the cover d.
i strut between the buffer h and leverf. j bracket secured to the bed plate a and
serving as a guide and stop for the lever f. k valve casing secured to the bed
plate a and provided with an upper and lower seat.. double scat valve in the
casing k. m valve stem rested on by the leverf. n adjustable weight on the lever f.
o waste pipe communicating past the valve stem m with the interior of the casing k.
p pipe leading to any suitable apparatus for giving motion to a damper. The
apparatus shown in outline answers well and may be fixed at any required distance
from the regulator. 7 is a casing containing a diaphragm. is a weighted lever
resting on the diaphragm, and s is a link connected to the damper. is a steam pipe
leading from the boiler, u is a pipe connecting the pipe t to a down take opening
into the chamber b. w is a movable plug at the top of the down take. x is a pipe
connecting the pipe to the valve casing k.
The chamber and part of the down take u are filled with water or other suitable
liquid, the steam pressure from the boiler acts on the said liquid and on the valve
so as to tend so raise the lever and valve. So long as the boiler pressure does not
exceed the desired amount, the valve remains closed but should the pressure rise
too high the lever fand valve are lifted, and steam passes by the pipe p beneath
the diaphragm in the case q and the damper is more or less closed until the pressure
in the boiler is reduced to the required extent when the valve / returns to its lower
seat. When the valve is on its lower seat, the steam in the case y passes away past
the valve stem through the waste pipe o. When the valve is on its upper seat,
steam can only pass into the casing 7. By varying the position of the weight n on
the lever, the damper may be acted on at any desired boiler pressure.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
First. The combination of a diaphragm or its equivalent with a double faced
valve, and weighted lever; substantially in the manner and for the purpose set
forth.
Second. The combination of apparatus under the first part of my invention with
appliances for giving motion to dampers for the purpose set forth.
Dated bue
15th day of August 1891.
БЕЗНИЙ THE LOGO (8V OL AHTUISE LOWL
Per pro J. T. KING,
J. Johnson,
Agent.
Per pro J. T. KING,
J. Johnson,
Agent.