An Improvement Connected with Automatically Supplying the Feed Water to Steam Boilers either Constantly or Intermittently.
Year: 1896

page_text: Date of Application, 4th Aug., 1896
Complete Specification Left, 4th June, 1897--Accepted, 17th July, 1897
An Improvement Connected with Automatically Supplying the Feed
Water to Steam Boilers either Constantly or Intermittently.
I, FRANK BURY PARKINSON of 11 Fernleaf Street Moss Side Manchester Civil and
Mechanical Engineer &c. do hereby declare the nature of this invention to be as
follows
The object of my invention is to automatically supply Steam Boilers with Feed
Water, varying in quantity with the varying demands upon Boiler & keeping the
water at one uniform level or allowing a certain given rise & fall of water in
the Boiler.
For the purpose of my invention I use a closed Steam Chest, near the Boiler &
at such a level that its water level about its centre is at the same water level as in the
Boiler.
This Steam Chest is connected to Boiler by two pipes. One pipe from water space
of Chest to water space of Boiler, the other pipe from steam space of Chest to steam
space of Boiler, so that the water level in Steam Chest is always at the same as in
the Boiler.
In the steam space of the Steam Chest there is a Valve either of Single, or of
Equilibrium or of other type, which is connected with a float or float & counterpoise,
either direct, acting or lever or balance somewhat similarly as regards the floats as
used in Steam Traps, Low Water Valves. To this Valve is attached a pipe which
conveys the Steam to Boiler Pump or Injector, so that when water level of Boiler
falls, it causes the Valve to open & admit steam to the Pump or Injector, thus
setting same in motion & feeding the Boiler with water. When the water level
rises it cuts off the Supply of Steam either wholly or partially according to
requirements, thus stopping or lessening supply of Feed Water.
The Valve can be arranged to allow any desired rise & fall of the water.
The Valve Apparatus can be used inside, the Boiler, without the Steam Chest.
The chief features of novelty are Valve connected with float in Steam Chest or
Steam Boiler which admits or cuts off Steam to Pump or Injector as water level falls
or rises in Boiler.
:: do of August 1806
An Improvement Connected with Automatically Supplying the Feed
Water to Steam Boilers Constantly or Intermittently.
I FRANK BURY PARKINSON of 11 Fernleaf Street Moss Side Manchester Civil and
5 Mechanical 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 :-

page_text: The object of my invention is to automatically supply Steam Boilers with Feed
Water varying in quantity, with the varying demand upon the Boiler & keeping the
water at one uniform level or allowing a certain given rise & fall of water in
the Boiler.
For the purpose of my invention, I use a closed Steam Chest near the Boiler
(similar to what are used for Box Steam Traps) and at such a level that its water
level A about its centre is at the same water level as in the Boiler.
The Steam Chest is connected to Boiler by two pipes one pipe from water space of
Steam Chest at orifice B to water space of Boiler and the other pipe from steam
space
of Steam Chest at orifice G to steam space of Boiler so that the water level in
the Steam Chest follows any variation of water level in the Steam Boiler and is
always at the same level or height as in the Steam Boiler.
In the steam space of the Steam Chest there is a Valve V either of Single,
Equilibrium or other type viz. slide, flat or circular, which valve is connected with a
float H or float H and counterpoise W either direct acting Fig. 5 or lever Fig. 4 or
lever and balance Fig. 1 somewhat similarly as regards the floats as used in Box
Steam Traps and Low Water Valves.
To the Valve V is attached a pipe G which conveys the steam either to Boiler
Pump or Injector. (This Valve V can also be placed outside the Steam Chest, and
connected on its cover and separate pipe from steam space of Boiler to Valve and
thence forwards to Pump or Injector, the Valve spindle of Valve being connected to
float H or lever L with suitable longer connections.) So that when the water level
falls the float H in water space of Steam Chest falls with it and causes the Valve V
which is connected to the float H by double fork K, lever L, and rod R in Fig. 1 and
Fig. 4 & directly by rod R in Fig. 5 to open and admit steam to Pump or Injector
thus setting same in motion and feeding the Boiler with water.
All the diagrams shew the Valve closed. When the water level rises the float rises
and consequently causes the Valve V to close and cuts off the supply of steam to
Pump or Injector either wholly or partially according to requirements, thus stopping
or lessening the supply of Feed Water to the Boiler."
In Fig. 1 is shewn an arrangement of float H immersed to water level A and
connected to lever L. by rod R, the double fork K connecting lever L to valve spindle
of Valve V. F is supporting fulerum of lever L.
Fig. 3 shews fulcrum F carried by crossbar E of Steam Chest.
Fig. 2 shews a method of supporting Valve V by its own steam pipe & locknuts
and by bar and locknuts to either side of Steam Chest, also shews another view of
connections of Valve Spindle to lever I. by double fork K.
Fig. 4 shews another type of action, viz.-Hollow float H connected to lever L
and lever L to Valve V by double fork K to valve spindle of Valve V. D is a guide
to the float.
Fig. 5 shews a type of direct action by hollow float H working in guides D D float
connected to rod R and joint to spindle of a Valve V of the Single type having a
guide D underneath it.
Fig. 6 is an enlarged view of a type of Equilibrium Valve with guides D above and
below and shewing also by Fig. 7 its connection of valve spindle to lever L. by double
fork K with the usual studs through same.
Fig 8 gives an enlarged view of another type of Equilibrium Valve with a guide D
underneath the Valve and shewing an arrangement for giving any desired rise and
fall of water by means of hook in fulcrum F being made larger than depth of lever L.
See Fig. 9 another view of same.
M is a counterbalance of weight of valve spindle and fulcrum, working on a pivot
or shaft N secured to side of Steam Chest.
This allows the Valve to remain open or closed during the travel of the lever until
it meets the hook in its next reverse movement.
The apparatus can be used inside the Boiler, without the use of the steam chest.

page_text: Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what I
claim is
A Valve connected with a float in a Steam Chest or Boiler which admits or cuts
off steam to Pump or Injector as the water level falls or rises in the Boiler.
Dated this 3rd day of June 1897.
FRANK BURY PARKINSON.