Improvements in Double Gauges for Steam Boilers or Analogous Uses, Applicable also to other Purposes where a Number of Passages have to be Controlled for Conducting Fluid in Various Directions.
Year: 1888

page_text: Improvements in Double Gauges for Steam Boilers or Analogous
Uses, Applicable also to other Purposes where a Number of
Passages have to be Controlled for Conducting Fluid in Various
Directions.
I, THOMAS HUNT of Gorton Foundry Manchester in the County of Lancaster,
Engineer do hereby declare the nature of this Invention to be as follows:-
:-
The principal object of my Invention is to provide a double gauge or a guage with
two glasses which is simpler and cheaper in construction and less liable to get out of
order than are such gauges as ordinarily made and gauges constructed according to my
Invention present the further advantage that they necessitate fewer openings heing
made for them in the skin of the boiler or the like. I make the setting at top and
bottom for the gauge glasses of a branch, flanged or otherwise formed, for attachment
to the boiler or vessel and opening into branches from either side in which the
glasses are respectively held. At the junction of each branch from the boiler or
vessel with the branches to the gauge glasses both above and below I make a socket
for receiving the plug of a cock with passages so arranged that by the adjustment of
these plugs the communication with the boiler can be opened to both gauge glasses
or to either one of them or (in the case of the bottom cock) between either of the
glasses and a blow off passage leading into the atmosphere with or without
communication with the boiler by the top cock being also open. thus require only
two cocks for the two glasses instead of six as hitherto and I make only two perfora-
tions in the boiler or vessel instead of four as hitherto.
If a lamp be used with the gauge it may be fixed to the gauge itself instead of on
the boiler or a bracket therefrom as usual.
It will be evident that the arrangement of passages and cocks as described can
be used generally for controlling a number of passages for conducting fluid in
various directions by the same cocks for instance they can be used for working two
injectors or for supplying the feed pumps with water or for controlling the passages
for grease to two cylinders:
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, London, W.C.,
Agents.

page_text: Improvements in Double Gauges for Steam Boilers or Analogous
Uses, Applicable also to other Purposes where a Number of
Passages have to be Controlled for Conducting Fluid in Various
Directions.
THOMAS HUNT of Gorton Foundry Manchester in the County of Lancaster
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 principal object of my Invention is to provide a double gauge or a gauge with
two glasses which is simpler and cheaper in construction and less liable to get out of
order than are such gauges as ordinarily made and gauges constructed according to
my Invention present the further advantage that they necessitate fewer openings
being made for them in the skin of the boiler or the like than have hitherto been
necessary. I make the setting at top and bottom for the guage glasses of a
branch, flanged or otherwise formed, for attachment to the boiler or vessel and
opening into branches from either side in which the glasses are respectively held.
At the junction of each branch from the boiler or vessel with the branches to the
guage glasses both above and below I make a socket for receiving the plug of a
cock with passages so arranged that by the adjustment of these plugs the
communication with the boiler can be opened to both gauge glasses or to either
one of them or (in the case of the bottom cock) between either of the glasses and a
blow off passage leading into the atmosphere with or without communication with the
boiler by the top cock being also open. I thus require only two cocks for the two
glasses instead of six as hitherto and I make only two perforations in the boiler or
vessel instead of four as hitherto.
If a lamp be used with the gauge it may be fixed to the gauge itself instead of on
the boiler or a bracket therefrom as usual.
It will be evident that the arrangement of passages and cocks as described can
be used generally for controlling a number of passages for conducting fluid, in
various directions by the same cocks for instance they can be used for working two
injectors or for supplying the feed pumps with water or for controlling the passages
for grease to two cylinders.
In the accompanying drawing Figure 1 is a vertical section through the centre
line of the two cocks shewing the device fixed to the plate of a boiler and with
the lamp in position. Figure 2 is a plan. Figure 3 is a section on the line N N
Figure 1 and Figure 4 is a front elevation.
a a¹ are the two cocks (like to each other and provided with handles a a³)
shewn in such a position that communication is open between the interior of
the boiler and both of the glass gauge tubes 6162 steam from the boiler entering
by the passage cand passing to the tubes 6 and 12 respectively by the passages c¹ c
and water from the boiler entering by the passage d and passing to the tubes and 62
respectively by the passages d₁ d². E is the waste pipe by which, when the

page_text: cocks a¹ and a² are moved through a partial rotation in one or the other direction,
either gauge glass can be blown through by steam entering at e and passing into and
through the gauge glass the water and steam passing out at E.
It will be seen by reference to Figure 3 that the way through the plug of each'
cock extends half way therearound so that the cocks when both are turned into the
position shown in the drawings open communication between the boiler and both
gauge glasses and when they are both turned to the right of the position Figure 3
(as indicated by arrows) the cock a opens communication by the passage c² between
the steam space of the boiler and the tube b² only and the cock al opens communication
by the passage d between the water space of the boiler and the tube 2 so that
the said tube 2 only is then in use. When both cocks are turned in the opposite
direction (to the left of the position Figure 3) the tube alone is similarly put in
communication with the boiler. By turning the cock a¹ to a greater extent in either
direction the passage d' alone or the passage alone is put in communication with
the tube or the tube 2 and the outlet E for blowing out either tube and its
passages as aforesaid the passage from the water space of the boiler being then
closed. The cock a can also be turned into such a position as to close entirely the
passages which it controls.
Lis a lamp shown as being supported upon the stem M of the casing of the
cock a which stein may be squared so that a squared recess in, or attached to, the
bottom of the lamp can be passed thereover for fixing the lamp in position and for
readily removing it. O is a plate or diaphragin of sheet metal or other suitable
material which may be used to protect either of the glass tubes ¹² if the other
should break or metal tubes may be used instead of the plate O the said tubes
surrounding the glass tubes and b and having a piece cut out for observing the
indications of the gauges or the plate and metal tubes may both be dispensed with.
I may provide valves each of which closes automatically if the glass with which it is
combined should break as then the current of steam and water passing out lifts the
valve V in connection with that glass and so prevents the escape of water but these
valves may be dispensed with.
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 :-
1. In double gauges or analogous devices for controlling the flow of fluids in various
directions branches at top and bottom leading to each gauge glass or equivalent
receiver and opening into pipes or passages common to both and provided with
means for attachment to the boiler or other vessel there being a cock or valve at
top and bottom for controlling the several passages substantially as horeinbefore
described and illustrated in the accompanying drawings.
2. In double gauges and the like branches at top and bottom leading to each
gauge glass or the like and opening into pipes or passages common to both and
provided with means for attachment to the boiler or other vessel there being a cock or
valve at top and bottom for controlling the several passages the lower cock or valve
also controlling a blow-off passage substantially as herein before described and
illustrated in the accompanying drawings.
3. The arrangement and combination of parts constituting the double gauge glass
hereinbefore described and illustrated in the accompanying drawings whether or not
the same be adapted for holding a lamp and whether or not the diaphragm or plate O
or the protecting tubes or the valves V be used.
Datad this 34th day at Desauber 1888