A Combined Exhaust Silencer and Circulating Pump for Gas Engines.
Year: 1895

page_text: Date of Application, 25th Apr., 1895
Complete Specification Left, 15th Jan., 1816-Accepted, 7th Mar., 1896
PROVISIONAL SPECIFICATION.
A Combined Exhaust Silencer and Circulating Pump for Gas
Engines.
We EDWARD TURNER of 47 Navigation Road, Altrincham, in the County of
Chester, Mechanic, and GEORGE JOSEPH HARDING of 41 Navigation Road,
Altrincham, in the County of Chester Joiner, do hereby declare the nature of this
invention to be as follows:-
:―
This invention relates to exhaust silencers for gas engines, and consists in
apparatus whereby the noise produced by the issuing exhaust products of com-
bustion is removed or reduced to a minimum,.and at the same time the forces of
these issuing gases are utilized to produce a flow or circulation of water between
the cylinder jacket and the water tank or tanks.
The apparatus necessary to the effectual carrying out of this invention consists
of a drum, inside which we in general place a broad sheet of iron or other metal,
bent so as to form a spiral coil. Entering at the top and passing down the centre
of this is a pipe, which forms a continuation of the exhaust pipe from the engine
cylinder, and which is continued so far downwards that its open end touches the
upper side of a reciprocating piston or plunger. When no exhaust is passing, this
piston or plunger is held up to, and closes the open end of the exhaust pipe; bnt
when the exhaust escapes from the engine cylinder, it has sufficient energy to force
the piston downwards, and the mouth of the exhaust pipe being thus opened, the
product of combustion escapes into the interior of the spiral coil, whence it passes
off into the atmosphere, or into a pipe, preferably through a layer, or layers of
coke, or similar suitable substance.
The reciprocating piston or plunger works in a cylinder which is in general
disposed inside the drum at its lower end; and this cylinder is connected with the
supply water tank, or other source, by means of a pipe which has a valve, so
arranged that no water can return from the cylinder to such pipe, when the piston
descends. At a higher level than the supply pipe, is placed the mouth of a
delivery pipe, which opens into the cylinder (with or without a valve) and the
other end of which pipe is carried to any chosen part of the cylinder water jacket.
The return pipe from the cylinder jacket passes to the water supply tank; and by
maintaining the surface of the water in this tank at a higher level than the piston
or plunger, the latter is, except when forced down by the exhaust pressure, pressed
upwards against the open end of the exhaust pipe.
By the use of this apparatus we ensure the silencing of the exhaust, and the
utilization of its remaining energy, in causing a circulation of the water, between
the cylinder jacket and the water supply tank, or other source, thus securing the
cooling of the engine cylinder.
Dated thin 5th do of Ail 1905

page_text: A Combined Exhaust Silencer and Circulating Pump for Gas
Engines.
We, EDWARD TURNER, of 47 Navigation Road, Altrincham, in the County of
Chester, Mechanic, and GEORGE JOSEPH HARDING, of 41 Navigation Road,
Altrincham, in the County of Chester, Joiner, 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 :-
This invention relates to exhaust silencers for gas engines, and consists in
apparatus whereby the noise produced by the issuing exhaust products of com-
bustion is removed or reduced to a minimum ; and at the same time the forces of
these issuing gases are utilized to produce a flow or circulation of water between
the cylinder jacket and the water tank or tanks.
In order that our invention may 'be fully understood and ascertained, we append
a sheet of drawings in which is illustrated a simple form of our invention, it being
understood that we do not restrict ourselves to any particular shape of the parts.
Fig. 1 is a vertical section of an apparatus according to our invention.
Fig. 2 is a horizontal section on line 1, 1 of Fig. 1.
Fig. 3 is a horizontal section on line 2, 2.
A water supply tank A of any convenient depth has fixed to it at or near its top
a vertical drum B, the lower part of which is immersed in the water contained in
the tank. The lower end of the drum is partially closed by an annular plate b,
and its upper end by either an annular domed cover b' having an opening 62, or by
a perforated cover b', serving the same purpose. Down through this drum B
passes a pipe or cylinder C the interior of which is bored to allow a piston or
plunger D to slide freely in it. The upper end of the cylinder or pipe C depends
from and is rigidly attached to one end of a collar E and into the upper end of
this collar is screwed the end of the exhaust pipe F, which communicates with the
interior of the gas engine cylinder X, the communication between the engine
cylinder and the exhaust pipe being governed by an exhaust valve in the usual
manner.
The lower end of the pipe or cylinder C has a foot valve c, upon a seating ở,
and is continued downwards to near the bottom of the tank A by means of a supply
pipe, through which the water from the tank A passes lifting the valve c to the
interior of the pipe or cylinder C.
The drum B is divided into two parts by an annular perforated diaphragm b²
which supports a layer K of coke or other similar suitable substance, through the
interstices of which layer the exhaust products of combustion are constrained to
pass on their way to the atmosphere. The lower part of the drum B below the
diaphragm b³, contains a sheet of iron or other metal G so wound as to form a
spiral passage, the inner end of which communicates (when the piston or plunger D
is depressed) with the interior of the pipe or cylinder C by openings c³, and the
outer end g of which opens to the interior of the drum B. The water circulating
pipes comprise a pipe H passing from the interior of the pipe or cylinder C to the
water jacket of the gas engine cylinder X, and the return pipe I which leads from
the water jacket to the top of the tank A. The pipe H has a valve arranged at
some part of its length the closing of which on the upstroke of the piston D
prevents the return of the water through the pipe H. The lower end of the
exhaust pipe F is closed by a valve L which may be formed integrally with or
rigidly attached to the piston D, but is preferably independent thereof and is
supported by a light spring surrounding a hollow stem which slides in a guide o
the latter being fixed in the interior of the cylinder C. The piston D is closed at
21

page_text: top and bottom and has a stem d extending upwards into the interior of the stem
of the valve; by this arrangement the valve is free to rise and close the mouth of
the exhaust pipe before the piston D rises. The surface of the water in the tank
must always be maintained at a higher level than that to which the lower end of
the piston D can ascend, the pressure produced by such difference of level causing
the upward or return stroke of the piston D.
The operation is as follows:-
When the exhaust valve opens, the exhaust products of combustion pass along
the exhaust pipe F, and pressing upon the valve L force it downwards and with it
the piston D. As soon as the upper edge of the piston D opens the passages c
in the cylinder C, the products of combustion escape into the spiral passage formed
by the metal plate G, enter the interior of the drum B and passing up through the
perforated diaphragm 6, and the interstices of the layer of coke K, they finally
escape into the atmosphere through the passage or passages 63. The descent of
the piston D forces the water beneath it (the valve c being closed) out through
the pipe H and its contained delivery valve, into the cylinder jacket.
As soon as the exhaust products have passed out of the cylinder C, the pressure
therein ceases and the valve L being forced by the spring upwards closes the
mouth of the pipe F. The piston D is thus left free to ascend and the pressure of
the water beneath it caused by the difference in levels, forces it upwards, the
valve c lifts by the pressure of the water in the pipe c³, and sufficient water enters
the lower part of the cylinder C to make up the quantity passed out during the
preceding downward stroke. The water in the cylinder jacket is prevented from
returning into the interior of the cylinder C by the valve in the pipe H, and thus
a complete pump is constituted, the piston or plunger D forcing at each downward
stroke a quantity of water into the gas engine cylinder water jacket, while its
ascent allows a fresh supply of water to pass from the supply tank A to the
cylinder C through the pipe c2 and valve c. The water having circulated through
the cylinder water jacket passes back to the water supply tank through the pipe I..
In addition to securing the pumping action the use of our apparatus effectually
silences the exhaust it having to move the valve L, pass through the passages c³).
along the spiral passage formed by the plate G, through the perforated diaphragm 63,
and the layer or layers of coke K before escaping into the atmosphere, or into a
shaft or chamber. The gases are partially condensed while doing work in forcing
down the piston; then being released they expand into the spiral passage, and
afterwards into the drum which being surrounded by water increases the con-
densation; and finally in passing through the layer or layers of coke, they are
purified before escaping into the atmosphere, or into a pipe.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
1. A combined exhaust silencer and water circulating pump for gas engines in
which the pressure of the exhaust products of combustion is utilized to force the
water which is used for cooling into and out of the water jacket of the cylinder,.
substantially as described and shewn.
2. A combined exhaust silencer and water circulating pump for gas engines,.
in which the pressure of the exhaust products of combustion before escaping forces
down a piston the descent of which causes water to circulate through the water
jacket of the cylinder and return to the water supply tank, a fresh supply of water
entering below the piston as it ascends, and substantially as shewn and described.
3. A combined exhaust silencer and water circulatiog pump for gas engines,
consisting essentially of a cylinder into which the exhaust, products of combustion
enter, a piston forced down by the pressure of the same until escape passages are
opened, and which in its descent forces water into the water jacket of the cylinder
of the engine, and valves for controlling the admission and exit of the same,
substantially as shewn and described.

page_text: 4. In a combined exhaust silencer and water circulating pump for gas engines,
the combination of the water tank A, the drum B, the cylinder C with openings c³,
the piston D, the valve o and the delivery valve in the pipe H, the spiral passage
formed by the plate G, and the chambers for containing the coke or other layers K,
substantially as described and shewn.
Dated this 13th day of January 1896.
WILLIAM J. MUNDEN,
106 Priory Park Road, Kilburn, London, N.W.,
Agent for the Applicants.