Improvement relating to the Exhaust of Gas and other Engines.
Year: 1894

page_text: Date of Application, 13th June, 1894
Complete- Specification Loft 13th Mar 1805 Accented
12h
Ane 1905
PROVISIONAL SPECIFICATION.
Improvement relating to the Exhaust of Gas and other Engines.
I, JOHN READ PAISLEY of Colnbrook in the County of Bucks, Engineer, do
hereby declare the nature of this invention to be as follows:-
This invention has for its object to silence the exhaust of gas and other engines
thus rendering them practically noiseless, and reducing the back pressure.
According to this invention I connect to the exhaust pipe of engines a tank into
which I fix a cylinder or chamber, such chamber being divided into two, so as to
form two compartments, the upper compartment forming the expansion chamber,
and below this chamber I fix a diaphragm plate having holes therein communicating
with tubes extending to a suitable depth into the bottom compartment, which I
terin the "well," and in connection with this latter I have a water supply and to
the lower part of said "well" I have one or more overflow pipes, which I call
"balance" pipes, in order to seal the aforesaid tubes in the well to a suitable
height. I also have a suitable adjustable overflow pipe in the outer tank for the
same purpose. I also fix a vent pipe in the aforesaid well to carry off the fumes
after passing the water seal, and in connection with the aforesaid expansion
chamber I have an inlet air valve to prevent a vacuum occurring in the engine.
Dated this 13th dor of June 1901
BROWNE & Co.,
9, Warwick Court, Gray's Inn, W.C., Agents for Applicant.
1, JOHN READ PAISLEY of Colubrook in the County of Bucks, 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 :-
This invention has for its object to silence the exhaust of gas and other engines,
thus rendering them practically noiseless, and reducing the back pressure.
According to this invention I connect to the exhaust pipe of engines a tank into
which I fix a cylinder or chamber, such chamber being divided into two, so as to
form two compartments, the upper compartment forming the expansion chamber,
and below this chamber I fix a diaphragm plate, having holes therein communicating
with tubes extending to a suitable depth into the bottom compartment, which I
term the well, and in connection with this latter I have a water supply, and to the
lower part of such well I have one or more overflow pipes, which I call balance
pipes; in order to seal the aforesaid tubes in the well to a suitable height I also
have a suitable adjustable overflow pipe in the outer tank for the same purpose.
I also fix a vent pipe in the aforesaid well to carry off the fumes after passing the
water seal, and in connection with the aforesaid expansion chamber I have an inlet
air valve to prevent a vacuum occurring in the engine.

page_text: And in order that my said invention may be more clearly understood, I will now
proceed to describe the same with reference to the accompanying sheet of drawings
in which Fig. 1 shews sectional elevation of apparatus, and Fig. 2 half sectional
plan.
The same letters denote the same parts in both the views.
a shews outer tank, b inner chamber divided into two by the diaphragm plate c.
The upper compartment d thus formed I term the expansion chamber, and the lower
one e the well. The diaphragm plate c has holes therein cominunicating with
tubes ff, extending to a suitable depth into the well; y is an inlet for the water
supply to the well, and are adjustable overflow pipes, which I term balance
pipes, for sealing the tubes to a suitable height. is a similar adjustable over-
flow pipe in the outer tank. kk shew flanges for fixing vent pipes for carrying
off the fumes after passing the water seal. pp are drip pipes to carry off the
moisture from the vent pipe flanges kk. lis hole for inlet air valve in expansion
chamber d. The use of this air valve is to prevent a partial vacuum occurring
in the engine. The exhaust pipe of the engine communicates with the apparatus
through the aperture m.
The outer tank is not represented in Fig. 2.
The action is as follows:-
Gas from the exhaust pipe enters through the aperture m into expansion
chamber d, where its volume is broken up by the pipes ff, through which it passes
into the well e. Escaping from these it percolates through the water. The effect
of this passage through the water is to deaden the sound which ordinarily occurs,
to cool the gas and to prevent exhaust charges of gas which at times are not fired
by the tube of the engine from accumulating in the ordinary exhaust boxes and
thus causing explosions. Finally all the fumes pass up the vent pipe. The height
。 of the water seal regulates the back pressure as required.
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 improvements in the gas exhaust of gas and other engines the employment
of an expansion chamber in combination with a number of pipes dipping into liquid
to form a liquid seal, in order to silence the exhaust and reduce and regulate the
back pressure in the engine, and prevent accumulations of exhaust charges of gas
not fired by the tube of the engine, and also to cool the gas.
2. The improvements relating to the gas exhaust of gas and other engines con-
sisting of an expansion chamber, well, diaphragm-plate, pipes with water seal,
balance pipes or adjustable overflow pipes to well and tank, all for the purposes
set forth.
3. The improvements relating to the gas exhaust of gas and other engines,
substantially as set forth, and shewn on the accompanying sheet of drawing.
Dated this Thirteenth day of March 1895.
BROWNE & Co.,
9, Warwick Court, Gray's Inn, London, W.C.,
Agents for the Applicant.