Year: 1888

page_text: [Communicated from abroad by FREDERIC (OOK and BURCHARD THOENS, both of
New Orleans, in the Parish of New Orleans, State of Louisiana, United States
of America, Mechanical Engineers ]
I, OLIVER IMRAY, of No 28 Southampton Buildings, Chancery Lane, in the County
of Middlesex, Fellow of the Institute of Patent Agents, do hereby declare the
nature of this invention and in what manner the sime is to be performed to be
particularly described and ascertained in and by the following statement
-
This invention relites to automatic apparatus for regulating the supply of water
to steam boiler maintaining a uniform water level, and also allowing the attendant to
change the water level when required and to pump up the water before blowing off
The iccompanying drawings represent apparatus according to this invention
Fig 1 is a vertical section, Fig 2 is a plan pirtly in section
A is a closed vessel, the upper part of which is connected with the steam space of
a boiler by the pipe B and the lower part is connected with the water spice of the
boiler by a pipe which has a valve L for opening or closing the cominunication
At the upper part of the vessel there is a pipe D by which steam passes to a feed
pump or apparatus for supplying the boiler with water
E is a glass water guage for indicating the water level in the vessel A which is the
same as in the boiler
In a lateral compartment A² is mounted a horizontal lever H having its fulcrum on
a knife edged bar 1 One end of this lever carries a head Hand hook H³ suspending a
weight F, which is partly immersed in the water and is counterbalanced by another
weight G screwed on the lever H When the vessel is empty of water the weight F
descends till it rests upon stops P As the weight F rises or descends, it closes or
opens more or less a balanced regulating valve which controls the flow of steam by
the pipe D to the steam pump or other apparatus that feeds the water to the boiler
The balanced valve J may be of any suitable construction, as shewn it is a throttle-
valve which turns on a spindle J in a tubular valve chamber J³, on the casing A T'he
chamber J³ is of a larger area than the pipe D so that considerable supply of steam

page_text: can be given with a slight opening of the valve J and slight descent of the weight F
The valve J is connected by a forked rod J* to the lever head H¹ According as the
flort F ascends or descends, the valve J is more or less closed or opened, adnutting
less or more steam to the pipe D and consequently causing the feed pump or appiratus
to work more slowly or quickly, and supply the boiler with less or more water in a
given time. The rate of supply of water to the boiler can be increased by idjusting
the counter weight G farther inwards causing the weight F to sink deeper and to
open the regulating valve J farther, or it can be diminished by adjusting the weight G
firther outwards causing the weight F to rise and close to a greater extent the valve J
The water level can also be varied by raising or lowering the weight F on the
screwed rod K
When it is desired to pump up the boiler before blowing off, the valve L is closed,
and a cock M, at the bottom of the vessel A is opened allowing some of the water to
escape
This cruses the weight F to descend opening the valve J so that the feed pump
runs faster filling up the boiler to the required height before blowing off
In order that the feed pump or apparatus may never be so far ictarded that it
would be liable to stop on a dead centre, an adjusting screw N can be set to form !
stop for the counterweight G preventing it from descending farther, the valve J
remaining then open just sufficiently to run the pump at its slowest speed without
stopping as it would do if the valve J were entirely closed
The
Dotted lines O indicate the extreme positions of the lever Hand valve rod J¹
weight F is preferably made as a hollow metal shell filled with stone, cement, or other
material heavier than water but lighter than metal, so that a comparatively small
counter weight G serves to balance that part of the immersed weight which is not
sustained by the water
Having now particularly described and ascertained the nature of this inven
tion and in what manner the same is to be performed I declare that what
I claim 18
1
A feed water regulator consisting of a vessel communicating with a steam boiler
above and below its water line and containing a vertically adjustable puitly immersed
weight, counter-balanced by a weight with adjustable leverage thest weights being
connected to a balanced regulating valve in steam pipe leading to the boiler feeder,
substantially as and for the purpose set forth
A