AN IMPROVED APPARATUS FOR EXHAUSTING OR DRAWING GAS FROM A MAIN PIPE, OR RESERVOIR, AND DELIVERING THE SAID GAS AT ANY REQUIRED PRESSURE"
Year: 1882

page_text: LETTERS PATENT to Thomas Thorp of Whitefield Architect and Thomas
Gardiner Marsh of Oldham Gas Engineer both in the County of Lancaster for
an invention of "AN IMPROVED APPARATUS FOR EXHAUSTING OR DRAWING
GAS FROM A MAIN PIPE, OR RESERVOIR, AND DELIVERING THE SAID GAS AT
ANY REQUIRED PRESSURE"
PROVISIONAL SPECIFICATION left by the said Thomas Thorp and Thomas
Gardiner Marsh at the Office of the Commissioners of Patents on the
28th April 1882.
THOMAS THORP of Whitefield Architect and TноMAS GARDINER MARSH of
Oldham Gas Engineer both in the County of Lancaster. "AN IMPROVED
APPARATUS FOR EXHAUSTING OR DRAWING GAS FROM A MAIN, PIPE, OR RESERVOIR,
AND DELIVERING THE SAID GAS AT ANY REQUIRED PRESSURE
"
The apparatus consists of a tank or cistern having a receiving chamber connected
to the gas supply and a pressure or delivery chamber to which the delivery pipe is
connected: in the chamber revolves a driven drum with closed sides and with spiral
shaped fans extending from the outside of the rim to the inside, the drum revolves
in water or other liquid which must not cover the drum. In the tank is a division
which separates the two chainbers except at the bottom and against which a boss
on the drum or one side of the drum bears the drum and the division are cut
away or peforated between the bearing at the side of the drum and the shaft
thus opening a communication between the two sides of the division in the tank
through the drum, through which the gas and water are forced.
To secure any uniform and desired pressure there is a U shaped vessel partly
filled with water or other liquid in or connected with the tank the one leg of
Pains Cal

page_text: which communicates with the atmosphere and the other with the delivery side of
the tank there is a tube extending nearly to the bottom of the U shaped vessel
the top of which tube communicates with the receiving side of the tank and when
the pressure of gas becomes too great in the delivery side of the tank the liquid in
the U shaped vessel is forced below the bottom of the tube which admits the gas
to the receiving side of the tank.
We drive the drum by water or other power or from a gas engine to which the
apparatus supplies gas. We fit a governor in the tank on the delivery pipe which
governor when the speed becomes too high presses forward a rod which passes
through the delivery pipe and by a valve wholly or partly closes the pipe.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Thomas Thorp and Thomas Gardiner Marsh in the Great Seal
Patent Office on the 26th October 1882.
THOMAS THORP of Whitefield Architect and THOMAS GARDINER MARSH of
Oldham, Gas Engineer, both in the County of Lancaster. "AN IMPROVED
APPARATUS FOR EXHAUSTING OR DRAWING GAS FROM A MAIN, PIPE, OR RESERVOIR
AND DELIVERING THE SAID GAS AT ANY REQUIRED PRESSURE "
:
The apparatus consists of a chest or cistern having a receiving chamber connected
to the gas supply and a pressure or delivery chamber to which the delivery pipe
is connected in the receiving chamber revolves a driven drum with closed sides
and with spiral shaped fans, extending from the outside of the rim to the inside,
the drum revolves in water or other liquid which must not cover the drum. In
the chest is a division which separates the two chambers except at the bottom and
against which a boss on the drum or one side of the drum bears: the drum and
the division are cut away or perforated between the bearing at the side of the
drum and the shaft thus opening a communication between the two sides of the
division in the chest through the drum, through which the gas and water are
forced.
To secure any uniform and desired pressure there is a U shaped vessel partly filled
with water or other liquid, in or connected with the chest, the one leg of which
communicates with the atmosphere and the other with the delivery side of the
chest there is a tube extending nearly to the bottom of the U shaped vessel the
top of which tube communicates with the receiving side of the chest and when
the pressure of gas becomes too great in the delivery side of the chest the liquid
in the shaped vessel is forced below the bottom of the tube which admits the
gas to the receiving side of the chest. A second tube is used secured at the upper
end to the first named tube through which gas may pass from the delivery to the
receiving chamber when the liquid is not forced below the end of the first named
tube. The object of this is to prevent water passing with the gas through the
first named tube into the receiving chamber.
And in order that our Invention may be fully understood and readily carried
into effect we will describe the accompanying sheet of drawings reference being
had to the figures and letters marked thereon.
Fig. 1 is a sectional elevation showing the receiving side of the chest. Fig. 2 is
a sectional elevation showing the delivery side of the chest. Fig. 3 is a transverse
sectional elevation. Fig. is a plan of the apparatus and Fig. 5 is a horizontal
section of the apparatus.
Similar letters refer to similar parts throughout the several views.
a is the chest or cistern partly filled with water or other liquid which is
admitted at a¹: in this chest is a division a2 extending from the top nearly to the
bottom bis the receiving chamber and c is the delivery chamber: d is the shaft
fitted in suitable bearings in the sides of the chest: this shaft may be driven in
any convenient manner: e is the drum formed of two discs between which are
four or other number of fans or scoops which extend from the periphery of the
drum almost to the centre: at the inner side of the drum is a circular opening f
that communicates with the delivery chamber c: a flange fixed to the drum turns
in a bearing in the division a²: in the delivery chamber is a pressure regulator
partly filled with liquid formed by two divisions c¹ and c² the former extending
from the bottom nearly to the top of the chamber and the latter extending from
the top nearly to the bottom: g is a tube the upper end of which is fixed to the

page_text: division a² and communicates with the receiving chamber b and the lower end
terminates a short distance from the bottom of the chest: h is a tube the upper
end of which is fixed in the tube g: liquid is admitted to the regulator at i and
at j is an outlet for the overflow: the overflow j may be closed and an opening
made for air higher up gas is admitted to the receiving chamber by the pipe k
and it is delivered at the desired pressure from the pipe l. Instead of the tube or
tubes in the regulator we may use a float connected to an equilibrium valve so as
to open it when the pressure becomes too great.
The mode of operation is as follows: the drum e is caused to rotate in the direction
indicated by the arrow in Fig. 1. and the gas enters between the fans or scoops at
their outer ends and in turning they catch up the water which passes quickly to
the centre and forces the gas in front of it through the opening f: the water also
passes through the opening f and returns under the division a² to the receiving
chamber the gas at the desired pressure is delivered through the pipe : the
pressure is regulated by the liquid in the regulator: when the pressure in the
delivery chamber becomes too great the liquid is forced below the lower end of
the tube h and the gas passes through it and through the tube g again into the
receiving chamber, thus causing the gas to issue from the pipe at a uniform
pressure.
Having stated the nature of our invention and described the manner of performing
the same.
We declare that we claim.
1. The combination and arrangement of the parts forming the improved
apparatus for exhausting gas and delivering it at a given pressure substantially
as herein described and shown.
2. The drum e substantially as and for the purpose herein described.
3. The pressure regulator substantially as and for the purpose herein described.
In witness whereof we, the said Thomas Thorp and Thomas Gardiner Marsh
have hereunto set our hands and seals this twentieth day of October One
thousand eight hundred and eighty two.
THOMAS THORP (L.S.)
THOS. G MARSH (L.S.)