LMPROVEMENTS IN APPARATUS FOR REGULATING THE SUPPLY OF WATER TO STEAM BOILERS, ALSO APPLICABLE TO OTHER PURPOSES
Year: 1877

page_text: LETTERS PATENT to John Garrett Tongue, of the Firm of Tongue and Birkbeck,
Patent Agents and Engineers, of 34, Southampton Buildings, Chancery Lano,
in the County of Middlesex, for the Invention of "LMPROVEMENTS IN
APPARATUS FOR REGULATING THE SUPPLY OF WATER TO STEAM BOILERS, ALSO
APPLICABLE TO OTHER PURPOSES." A communication from abroad by Eduardo
Claudio da Silva, of Rio de Janeiro, in the Empire of Brazil.
PROVISIONAL SPECIFICATION left by the said John Garrett Tongue at the
Office of the Commissioners of Patents on the 3rd February 1877.
JOHN GARRETT TONGUE, of the Firm of Tongue and Birkbeck, Patent Agents
and Engineers, of 34, Southampton Buildings, Chancery Lane, in the County of
Middlesex. "IMPROVEMENTS IN APPARATUS FOR REGULATING THE SUPPLY OF
WATER TO STEAM BOILERS, ALSO APPLICABLE TO OTHER PURPOSES." A communi-
cation from abroad by Eduardo Claudio da Silva, of Rio de Janeiro, in the Empire
of Brazil.
This Invention relates to improvements in apparatus for regulating the supply of
water to steam boilers.
The apparatus in its simplest form consists of a cylinder placed above the water
line of the boiler, having a piston capable of moving freely within it. The upper
side of the piston is in connection by a passage herein called a with the boiler
below the level of the water line. The lower side of the piston is in connection by
a passage herein called 6 with the level of the water line in the boiler. When the
piston is at the top end of the cylinder a passage herein called a, then open, admits
water into the boiler, and when the piston is at the lower end of the cylinder the
passage is closed. When the water in the boiler falls below passage b the water.
in it falls, the piston is sucked up (by the downward column in passage or con-
nection a), and thereby opens the passage x, admitting water in the boiler until the
end of passage b is closed, when so that passage b fills up (by the condensation of
the steam in it), the piston falling by its own weight cuts off the supply of water
ID 1

page_text: . to the boiler. The pump supplying the water has a relief valve so as to relieve it
of any excess of pressure when the passage x is closed. The action of the apparatus
may be reversed.
This apparatus is also applicable to other purposes when the level of the water of
other liquid has to be maintained, either by the inflow of the liquid to be 5
evaporated on the outflow of the condensed fluid (such as in a high pressure
condenser or in a steam pipe).
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said John Garrett Tongue in the Great Scal Patent Office on the 3rd
August 1877.
JOHN GARRETT TONGUE, of the Firm of Tongue and Birkbeck, Patent Agents
and Engineers, of 34, Southampton Buildings, Chancery Lane, in the County of
Middlesex. IMPROVEMENTS IN APPARATUS FOR REGULATING THE. SUPPLY OF
WATER TO STEAM BOILERS, ALSO APPLICABLE TO OTHER PURPOSES." A communi-
cation from abroad by Edwardo Claudio da Silva, of Rio de Janeiro, in the Empire 1
of Brazil.
This Invention relates to improvements in apparatus for regulating the supply of
water to steam boilers, also applicable to regulate the discharge of water from steam
pipes or steam reservoirs.
The apparatus consists of a cylinder C having a piston P moving freely within it, s
as shown in the Drawing hereto annexed. The piston is in connection by passage f
with the level of the water line, and by passage g with the water below the water
line. The lower part p of the piston P opens or closes passages u (in connection
with passage a), according as to whether the piston P is up or down in the
cylinder C. Two cocks d and h are for disconnecting the apparatus for inspection'
whilst under steam; the passage ƒ encloses passage g; 8 is a spring to force upwards
the piston P when not acted-upon by column of water-in passage g.
The action of the apparatus when used for regulating the supply of water to
steam boilers is as follows:-The piston P is drawn down in the cylinder C by the
column of water in the passage ġ, the passage f being uncovered, and therefore
containing steam, and the passages u being open, and the apparatus feeding. The
piston P being pushed up by the spring 8 (as shown in Drawing), the end of
passage being covered by the water line the steam in it is condensed by the:
colder water in passage g (itself within passage f), water rising in passage f the
feed passages u are closed until the water in the boiler falling below passage fit is g
replaced by steam; the piston P is again drawn down by the column of water in.
passage g, the apparatus beginning to feed again, and so on, acting as above stated,,
and keeping a regular supply. The feed pump has a relief valve so as to relieve it
.of any excess of pressure when passages u are closed.
When regulating the discharge of the water the apparatus is so arranged that
the passages u for the discharge of the water are open when the level of the water.
line closes the end of passage ƒ (being the reverse of the feed regulator), and closed
when the water line lays open the end of passage f
The details of the apparatus may be varied without departing from the nature of
the Invention; a diaphragm may replace the piston P.
Having thus described the nature of the Invention, and the manner of performing
or carrying the same into practice, I would remark that no claim is made to any
of the parts separately, which are well known, but what I clain under the above
in part recited Letters Patent is,-
First. The general arrangement and combination of parts constituting the im-
proved apparatus for regulating the supply of water to steam boilers, also applicable.
for regulating the discharge of water from steam pipes or steam reservoirs, sub-
事

page_text: stantially in the manner herein-before described and represented in the Drawing
hereto annexed.
Secondly. The arrangement and disposition of the passages f and g, substantially
as shown and for the purposes herein stated, in relation to each other, and to the
acting parts P and p.
Thirdly. The arrangement and disposition of the cocks d and h for the inspection
of the apparatus whilst under steam, substantially as herein shown and described.
In witness whereof, I, the said John Garrett Tongue, have hereunto set my
hand and seal, this Third day of August, in the year of our Lord One
thousand eight hundred and seventy-seven,
JOHN GARRETT TONGUE. (Ls)