Improvements in Gas and Explosive Vapour Engines.
Year: 1895

page_text: Date of Application, 27th Dec., 1895
Complete Specification Left, 23rd Sept., 1896-Accepted, 21st Nov., 1896
PROVISIONAL SPECIFICATION.
Improvements in Gas and Explosive Vapour Engines.
I, JOHN EDWARD ROGERS of 85 Sycamore Road Smethwick near Birmingham,
Machinist do hereby declare the nature of this invention to be as follows
:-
The general construction of an engine according to my invention would be in
design and method of working the same as the "Otto" having tube ignition my
improvements specially relate to methods of constructing the bevil gear for driving
the valve gear, also the valve gear for admitting exhausting and governing the
gases for driving the engine also an arrangement for supplementary exhaust.
The bevil gear would be with a shrouding or plain part turned true on the pitch
line of the bevil gear so that when they were running these plain parts would bear
against each other which would be made certain by a spring arranged between
collars on the shaft driven by the bevil gear for working the valve gear and
made to work with a minimum of friction by arranging them as a ball bearing.
The shaft that is driven by the bevil gear is continued to the end of the cylinder
behind the piston, and on the end of it is fixed the cams for operating the valve
gear; the valves for admitting, exhausting and governing the explosive mixture are
arranged in suitable valve boxes on the cylinder cover and motion is given to them
by the cams through suitable gear.
The design of the gear for operating the above valves would be the same in
principle as a tee-bob lever, that is, a lever in design similar to the letter T but
arranged in carrying out my invention thus the central leg of the lever is
modified to take up the movement of the cams the pivot or fulcrum of the lever
being at the point of junction of two lines it transmits the movement of the cams
through the arms above and below as required and having one of its arms
lengthened to carry a governor similar in design to the one contained in my
Invention No. 15737 A.D. 1885.
The supplementary exhaust in my present invention would be arranged on top of
the cylinder in the horizontal type of engine instead of underneath as in my
before mentioned invention.
Dated this 25th day of December 1895.
Improvements in Gas and Explosive Vapour Engines.
I, JOHN EDWARD ROGERS of 85 Sycamore Road Smethwick near Birmingham
Machinist 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 :-
Figs. 1-2 and 3 of the accompanying drawings shew sectional elevation plan
and end view of an engine constructed according to my invention.
In Fig. 1 the piston B is shewn as having arrived at the end of its forward
stroke in the cylinder A' by the explosive force of the live gas it will be seen that
1 Price 8d.i

page_text: the piston B'has uncovered the supplementary exhaust port D which port is
connected with the main exhaust F through branch pipe E so it will be seen that a
portion of the dead gas exhausts itself through the port D and the remainder is
exhausted from the cylinder by the back stroke of the piston through valve K into
the main exhaust F.
Piston B' when taking up a charge of live gas is enabled to do so through the
valve I and gas valve H air being supplied through pipe G and mixing together
form an explosive mixture in the cylinder which is exploded at the proper time on
the return or compression stroke of the piston by an ignition tube and apparatus of
the ordinary description fixed in the valve chest A2 and Z.
The method of working the gear for charging and exhausting the cylinder B' is
as follows.
The shaft Z is geared to work from main shaft of engine and gives motion to
roller cams R and S fixed on Z¹ and worked by it and timed to give motion to the
lever V through the arms T and U as required.
Therefor it will be seen that the lever V being actuated by the roller cams R
and S at the required time the live gas is let into the cylinder by the roller cam R
moving arm T causing roller S' to press on spindle of air valve I also at the same
time causing the point X to press on spindle of gas valve H allowing the gas and
air to mix and enter the cylinder through port L which after being compressed and
exploded is partially exhausted through port D and the remainder exhausted
through valve K into main exhaust valve K being opened by roller cam S
through lever pressing R¹ against spindle of valve K.
The valves K-1 and H are held on their respective seats by springs in the
usual way.
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. The arrangement of the supplementary exhaust port D at the end or non-
efficient portion of the stroke of the piston B' in combination with the main
exhaust so that the exhaust shall leave the cylinder in an upward direction
substantially as shewn and described.
2. The valve chest A2 constructed with all the valves K-I and H in one direct
line at right angles with the cylinder substantially as shewn and described.
3. The lever V constructed so that it shall take its motion from the roller
cams R and S and impart it to valves K-I and H substantially as shewn and
described.
4. The supplementary exhaust port D main exhaust port F valve chest A' with
valves K-I and H roller cams R and S and lever V constructed arranged and
working together substantially as shewn and described.
Dated this 22nd day of September 1896.
JOHN EDWARD ROGERS.