Improvements in Gas Engines.
Year: 1891

page_text: Date of Application, 6th Jan., 1891-Accepted, 7th Feb., 1891
Improvements in Gas Engines.
I, HENRY NIELD BICKERTON, of 6, Richmond Street, Ashton-under-Lyne,
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 :-
The improvements relate to gas engines, and have for object the providing of
means or apparatus for reducing the noise caused by the intake of air thereto, and
the exhaust gases therefrom.
To accomplish this and to effect my improvements, I provide at the intake orifice
of the engine leading to the suction pump or valve, a block or box of metal or other
substance provided with a number of passages pierced therethrough. These
passages, in the case of a block are, by preference, taper, having the smaller
openings on the inside.
On the outside of this block, and in continuation of the taper passages or openings
therein, I attach, insert, or connect pipes, one to each of the holes or openings, and,
by preference, arrange the same in a pendant position.
In similar manner, at the end of the exhaust pipe, I attach a box, (or block, as
the case may be) and provide, in connection therewith, a number of projecting pipes
or small tubes, which are attached thereto, and from which the exhaust gases finally
escape; by this means much reduction in the noise of a gas engine is effected.
But that the improvements may be better understood, I will, with the aid of the
accompanying drawings proceed more fully to describe means employed by me.
DESCRIPTION OF DRAWINGS.
Fig. 1. shews a sectional elevation, and Fig. 2. a transverse section through
line A. B. of apparatus arranged in accordance with my invention, at the intake
orifice. Fig. 3. shews a sectional elevation, and Fig. 4. a plan view of apparatus
arranged in accordance with my invention at the exhaust pipe.
The same letters indicate corresponding parts wherever they occur.
In Figs. 1 and 2, a. a. is the intake orifice, and b. b. the pierced block fitted
therein, while c. c. are the pendant tubes attached thereto.
Upon the engine drawing in air, the current is broken up into a number of small
channels by means of the pendant or other tubes.
In Figs. 3 and 4, a¹ a¹ is the exhaust orifice or pipe, and b. b. the pierced box
fitted thereon, while c. c. are the projecting tubes attached thereto.
The current of exhaust gases is thus broken up on exit, in manner similar to the
current of air on entrance.
Variations in detail may be made, such as the length, position or direction, and
number of the pipes or tubes and openings in the block or box, the sizes of the
same, or the material of which they are composed; also a block may be substituted
at the exhaust end, or a box at the intake end, or one may be so fitted without the
other, without departing from the peculiar character of the invention.
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 gas engines, the employment of a pierced block or box at the orifice for the
intake of air provided with a number of pipes or tubes, for the purpose and in
manner substantially as herein shewn and described.

page_text: 2. In gas engines, the employment of a pierced box or block at the exhaust pipe
or orifice provided with a number of pipes or tubes for the purpose and in manner
substantially as herein shewn and described.
Dated this 5th day of January 1891.
WILLIAM GADD, C.E.,
64, Barton Arcade, Manchester, Agent.