Improvements relating to the Starting of Gas Engines.
Year: 1899

page_text: Date of Application, 22nd Apr., 1899
Complete Specification Left, 20th Jan., 1900-Accepted, 24th Feb., 1900
PROVISIONAL SPECIFICATION.
Improvements relating to the Starting of Gas Engines.
We, HENRY NIELD BICKERTON, and HENRY WENTWORTH BRADLEY, both of
Wellington Works, Ashton-under-Lyne, Engineers, do hereby declare the nature
of this invention to be as follows:
The improvements relate to the starting of gas engines wherein firing is
effected by contact of the gases with a heated tube, and have for object to enable
ignition to be effected, in manner hereafter described, when the pressure of the
charge is comparatively low.
To accomplish our improvements we provide, in lieu of the ordinary upper
support for the firing tube, a valve or cock, which serves to support such tube,
and which, when open establishes a fine opening or leak through which the
spent gases, remaining in the firing tube after exhaust, may escape into the
open air; or, as a modification, such valve or cock may open free passage to a
chamber above the same, which chamber is provided with a fine opening or
leak to the atmosphere.
The valve or cock is opened, by hand, when it is desired to start the engine,
whereby the fresh charge, although under comparatively low compression, may
come in contact with the heated tube, by driving out the dead gases therein,
and thus effect ignition.
When the engine has started, the valve or cock is closed, sufficient pressure
being imparted to each charge to ensure contact with the firing tube notwith-
standing the presence of the spent gases.
Dat this lot love of Anil 1900
WILLIAM GADD, C.E.,
64, Barton Arcade, Manchester, Agent for Applicants.
Improvements relating to the Starting of Gas Engines.
We, HENRY NIELD BICKERTON, and HENRY WENTWORTH BRADLEY, both of
Wellington Works, Ashton-under-Lyne, Engineers, 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 the starting of gas engines wherein firing is
effected by contact of the gases with a heated tube, and have for object to enable
ignition to be effected, in manner hereafter described, when the pressure of the
charge is comparatively low.
To accomplish our improvements, we provide, in lieu of the ordinary upper
•
Price 11

page_text: support for the firing tube, a valve or cock, which serves to support such tube,
and which, when open establishes a fine opening or leak through which the
spent gases, remaining in the firing tube after exhaust, may escape into the
open air; or, as a modification, such valve or cock may open free passage to a
chamber above the same, which chamber is provided with a fine opening or
leak to the atmosphere.
The valve or cock is opened, by hand, when it is desired to start the engine,
whereby the fresh charge, although under comparatively low compression, may
come in contact with the heated tube, by driving out the dead gases therein,
and thus effect ignition.
When the engine has started, the valve or cock is closed, sufficient pressure
being imparted to each charge to ensure contact with the firing tube, notwith-
standing the presence of the spent gases.
But that the improvements may be better understood, we will, with the aid
of the accompanying drawings, proceed more fully to describe means employed
by us.
DESCRIPTION OF DRAWINGS.
The figure shows a vertical section of a gas engine firing tube and tube
chamber, furnished with an upper tube support and provided in accordance
with one form of our improvements.
The same letters indicate corresponding parts wherever they occur.
a, is the firing tube, mounted within the chamber b, and supported at its
upper extremity by the continuation c, which is forced down upon the tube a,
to hold the latter in position, by means of the screwed piece d.
The passage E through the firing tube a, and continuation c, may be contracted
near the top of the latter, to a smaller opening, e, which is capable of being
closed by a valve g, controlled by a screw h.
This valve g, is held down upon its seating during the ordinary running of
the engine by the screw h; but, for starting purposes, this screw is loosened,
and the valve 9, is thereby raised so as to permit of the spent gases in the
tube a, being driven to the outer air by way of the fine opening or leak, which,
in this example, is provided by forming a narrow recess k, in the upper part of
the screw h, and allowing the lower part of such screw to fit sufficiently loosely
to permit the gases to blow past. But, if preferred, the whole of the screw h,
may thus fit loosely, and the recess k, be dispensed with; and other variations
in detail may be made without departing from the peculiar character of the
invention.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is:
In the starting of gas engines, the employment of a firing tube support in
combination with a valve or cock which opens or closes communication between
the interior of the firing tube and the outer air by way of a fine opening or
leak, for the purpose and in manner substantially as herein shown and described.
Dated this 19th day of January 1900.
WILLIAM GADD, C.E.,
64, Barton Arcade, Manchester, Agent for Applicants.