Improvements in Water Gauges.
Year: 1899

page_text: Date of Application, 4th Apr., 1899
Complete Specification Left, 30th Dec., 1899-Accepted; 31st Mar., 1900--
17
PROVISIONAL SPECIFICATION.
Improvements in Water Gauges.
1.
: . חזןז
His
I, ALEXANDER LUMSDEN SCHRAM, of corner Canterbury & Huron Streets,
in the Town of Woodstock, in the County of Oxford, in the Province of Ontario,
Canada, Manufacturer, do hereby declare the nature of this invention to be as
follows:-
*
My invention relates to improvements in water gauges and the object of the
invention is to devise a simple and effective emergency cut-off valve for water
gauges, which when a gauge glass breaks will effectually prevent any danger
of scalding or accident by automatic closure to prevent the water and steam
escaping and it consists essentially of hollow tubular valves adapted to fit in the
passage-ways leading from the interior boiler into the cocks and having, a seat
at one end of the cock, each valve being provided with a head having cross slots
next the boiler and holes leading into the interior next the head, and the
opposite end being provided with notches, such valves being actuated as herein-
after more particularly explained.
. I
Fig. 1; is a sectional perspective view of a glass water gauge provided with
my improved emergency cut-off valve..
::
Fig. 2, is a perspective view of the valve stem.
In the drawings like letters of reference indicate corresponding parts in each
figure.
2777
A is the end of the boiler and B and C are the two cocks, which'are' provided
with valve stems b and c each of which screw,into the body of cock as indicated.
D is the glass tube extending between the cocks. 61 and el, are the passage-
ways leading into the cock C. The inner end of each cock is provided with a
threaded extension B and Conto which is screwed the extension plugs B³
and C, which are themselves suitably, screwed into the end of the boiler.
The extension plugs have passage-ways extending through them provided with
enlargements 62 and c. The inner end of the extensions B₁ and Care pro-
vided with annular face recesses 62 and 3.
F are the hollow valves, which fit within the passage-ways b¹ and c¹ leading
into the cock. The valves F are cylindrical in form and provided with heads f
having cross slots fl. f are openings leading into the interior of the hollow
valve in proximity to the head f. are notches cut in the opposite end of the
hollow valve. Gare light spiral springs extending into a recess in the threaded
extensions.
* !
In Fig. 1, I have shown one valve stem 6 partially withdrawn and it will of
course be understood. that this is the ordinary position although I have shown
the lower one screwed inwardly, so as to come in contact with the end of the
hollow valve. I have only shown this in this manner. however, to exemplify-the
operation of the stem in order to permit the casy access of the water into the
gauge glass after it has been broken.
i
I. shall now briefly describe the operation of my cut-off valve. Both stems b
are set in the same position as that shown as to the stem bThe water
and

page_text: in the boiler of course fills also the gauge glass and cocks and passage-ways
leading thereto. When the glass D is broken, which arises from various causes
not necessary here to enumerate, the force of the water behind the heads f forces
them both forwardly in the direction indicated by arrow, so that the annular
knife edges f at the front side of the head close into the annular recesses ³é³,
so that the supply of the water is immediately shut off from the gauge glass D.
Of course the inner side of the head f may be flat but I prefer using the form
described as the knife, which serves to cut into the dirt which may be in the
groove 63 forms a perfectly water tight joint.
It will thus be seen that when the gauge glass ] is broken there will be no
danger of any scalding or other accident taking place as merely the water in
the gauge glass and gauge cocks will fall instead of being impelled or caused to
spurt outwardly by the force of the water under pressure in the boiler.
It will be readily seen that a new glass may be inserted and the valve stems b
and c may be screwed inwardly as shown by the lower valve stem, thereby
allowing the water from the boiler to pass around the head f of the valve I
and through the holes finto the interior of the valve whence it passes out
through the notches f³ at the outer end of the valves into the cocks, thence
into the gauge tube.
Under ordinary circumstances the spiral spring G is unnecessary to force the
head of the valve from its seat and especially so in stationary boilers. In
locomotive work, however, it is preferable to have such a spring in order to
hold the head midway in the enlargement 62 of the plugs B2, so that the water
will readily pass around it without disturbing it as otherwise the jarring of the
locomotive might have a tendency to disturb the head and force it against its
seat unnecessarily.
The cross slots f¹ hereinbefore described serve to allow of the passage of the
water around the head should such head by unforeseen circumstances be forced
against the inner end of the enlargement of the extension plug. If such slots
were not provided and the heads of the valve happened to be abutting the ends
of the enlargement in the plugs, if the water fell in the boiler such gauge tube
would be useless as it would still remain filled with water instead of the level
of the water in the boiler indicating on the tube.
I am aware that it is not new to provide valves in the cocks of gauges for
automatically shutting off the supply of water to the gauge glass and I do not
lay claim broadly to any such device.
Improvements in Water Gauges.
I, ALEXANDER LUMSDEN SCHRAM, of corner Canterbury and Huron Streets,
in the Town of Woodstock, in the County of Oxford, in the Province of Ontario,
Canada, Manufacturer, do hereby declare the nature of my invention for certain
new and useful improvements in water gauges, and in what manner the same
is to be performed to be particularly described and ascertained in and by the
following statement:-
My invention relates to improvements in water gauges and the object of the
invention is to devise a simple and effective emergency cut-off valve for water
gauges, which when a gauge glass breaks will effectually prevent any danger

page_text: of scalding or accident by automatic closure to prevent the water and steam
escaping and it consists essentially of hollow tubular valves adapted to fit in the
passage-ways leading from the interior boiler into the cocks and having a seat
at one end of the cock, each valve being provided with a head having cross slots
next the boiler and holes leading into the interior next the head and the
opposite end being provided with notches, such valves being actuated as herein-
after more particularly explained with reference to the sheet of drawings accom-
panying my Provisional Specification, in which;-
:-
Figure 1 is a sectional perspective view of a glass water gauge provided with
my improved emergency cut-off valve, and
Figure 2 is a perspective view of the valve stem.
And to the accompanying drawing marked Figure 3 which is a central section
of the upper fitting of the water gauge drawn to an enlarged scale.
In the drawings like letters of reference indicate corresponding parts in each
figure.
A is the end of the boiler and B and C are the two cocks, which are provided
with valve stems b and c each of which screw into the body of the cock as indicated.
D is the glass tube extending between the cocks. 61 and c¹ are the passage-
ways leading into the cock C. The inner end of each cock is provided with a
threaded extension B¹ and C¹ on to which is screwed the extension plugs B³
and C, which are themselves suitably screwed into the end of the boiler.
The extension plugs have passage-ways extending through them provided with
enlargements 62 and 2 The end of the extensions B¹ and Care provided with
annular face recesses 63 and 3.
F are the hollow valves, which fit within the passage-ways b and c leading
into the cock. The valves F are cylindrical in form and provided with heads f
having cross slots f¹. f are openings leading into the interior of the hollow
valve in proximity to the heads f. f³ are notches cut in the opposite end of the
hollow valve. G are light spiral springs extending into a recess in the threaded
extensions.
In Fig. 1, I have shown one valve stem b partially withdrawn and it will of
course be understood that this is the ordinary position although I have shown
the lower one screwed inwardly, so as to come in contact with the end of the
hollow valve. I only have shown this valve secured inwardly, however, to
exemplify the operation of the stem in order to permit the easy access of the
water into the gauge glass after it has been broken.
I shall now briefly describe the operation of my cut-off valve. Both stems b
and care set in the same position as that shown as to the stem b. The water
in the boiler of course fills also the gauge glass and cocks and passage-ways
leading thereto. When the glass D is broken, which arises from various causes
not necessary here to enumerate, the force of the water behind the heads f force
them both forwardly in the direction indicated by arrow, so that the annular
knife edges f at the front side of the head close into the annular recesses b³ and c³,
so that the supply of the water is immediately shut off from the gauge glass D.
Of course the inner side of the head f may be flat but I prefer using the form
described as the knife, which serves to cut into the dirt which may be in the
groove 63 forms a perfectly water tight joint.
It will thus be seen that when the gauge glass D is broken there will be no
danger of any scalding or other accident taking place as merely the water in
the gauge glass and gauge cocks will fall instead of being impelled or caused to
spurt outwardly by the force of the water under pressure in the boiler.
It will be readily seen that a new glass may be inserted and the valve stems b
and may be screwed inwardly as shown by the lower valve stem, thereby
allowing the water from the boiler to pass around the head f of the valve F
and through the holes f into the interior of the valve whence it passes out
through the notches at the outer end of the valves into the cocks, thence
into the gauge tube.

page_text: Under. ordinary circumstances the spiral spring. G is unnecessary, to force the
head of the, valve from its seat and especially, so in stationary boilers. In
locomotive work, however, it is preferable to have such a spring, in order.to
hold the head, midway in the enlargement 62 of the plugs 132, so that the, water
will readily pass around it without disturbing it as otherwise the jarring of the
locomotive might, have a tendency to disturb the head and force, it, against,, its
seat unnecessarily..
The cross slots f¹ hereinbefore, described serve to allow of the passage of the
water around the head should such head by unforeseen circumstances be forced
against the inner end of the enlargement of the extension plug. If such slots
were not provided and the heads of the valve happened to be abutting the ends
of the enlargement in the; plugs, if the water fell in the boiler such gauge tube
would be useless as it would still remain filled with water instead of the level
of the water in the boiler indicating on the tube.
.
I am aware that it is not new to provide valves in the cocks of gauges. fór
automatically shutting off the supply of water to the gauge glass and I do not
lay claim broadly to any such device..
....
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:-
4
1. The combination with the boiler and gauge glass of a cock at each end
of said glass passages leading from the boiler to said glass through said cocks,
valves located in said passes, each of said valves having an enlarged head with
cross slots in the face thereof; and a tubular stem having slotted ends, an inlet
'to said valve leading through said stem and valve stems adapted to partly
close said slotted stems substantially as described.
t-.
2. The combination with a boiler and gauge glass with a passage=connecting
the same, of a valve controlling said passage having an enlarged head' with slots
in the face thereof, and a tubular stem, passages leading through said stem, the
end of said stem being slotted, substantially as described.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.-