Improvements in Gas, Steam, and Compressed-air Engines.
Year: 1895

page_text: Date of Application, 16th Jan., 1895--Accepted, 16th Feb., 1895
GUBITDELE DIMOLTIVATION.
Improvements in Gas, Steam, and Compressed-air Engines.
I, ARTHUR EDWIN LONES, High Street, Princes End near Tipton Staffordshire,.
Draughtsman, 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 :-
My invention relates to an improved construction and arrangement, or
combination, of gear for operating and governing the air and gas valves of gas
engines, and the inlet valves of steam engines and compressed-air engines.
Figure 1 shews a section through the air-valve of a four-cycle gas-engine with
the gear applied.
The spindle E of the valve F is connected by means of a cross-bar, to the
spindle of the gas-valve. This cross-bar engages with the slotted arm G of a
bell-crank-lever G, H, which pivots upon a spindle I supported by brackets, as K,
on the cylinder A, or cylinder cover B. A cam N acts upon a rectangular block L
on the lever G H to open and close the air valve F and gas valve simultaneously.
The face, of the block L, acted upon by the cam may be inclined or curved to
cause a rapid opening of the valves, which are closed by suitably arranged springs
connected with the lever G H. The block L is connected by a lever R and
links P, or by links only, with suitable govenors and slides without turning upon
the arm H. The cam N is loose upon a shaft M but is secured by a pin or bolt to
a sector or disc keyed on the said shaft. A curved slot S permits the circular
adjustment of the cam N. The shaft M is carried by bearings on the brackets K
and is driven from the crank shaft of the engine, by means of a chain and chain-
wheels similar to those used upon safety bicycles. Should the engine speed
increase the block L descends, thereby diminishing the length of face over which
the cam N travels, so that the valves are closed sooner, and vice versa. The
branch C of the valve body fits in a bored hole in the cover B and is secured by a
nut D. The exhaust valve and igniting valve are operated by bell-crank-levers on
the spindle I and adjustable cams on the shaft M.
Figure 2 shews a section through the cylinder and valves of a compressed air
engine, or steam engine, with the gear applied.
An adjustable cam K, on a shaft L driven by a chain and chain-wheels from the
engine crank-shaft, acts upon bell-crank-levers BC, H F, provided with sliding
blocks D and E and connected to the valves A, A'. Suitable govenors are
connected with a lever G which pivots upon the shaft L and connects the two
blocks together as shewn. When slide valves of the short-D or other type are
used, or when the spindle of the valve runs parallel to the centre line of the
cylinder N, a simple arm or rod, which carries the sliding block, is pivoted at one
end and engages with a slot in the end of valve spindle.
In reversing engines the lever G, connected to the two blocks D, E, is pivoted
upon a sliding block on the bracket M. This block is operated by a screw and
hand-wheel, or other suitable device, and the shaft L is disengaged from its driving
chain-wheel by a suitable clutch arrangement and operated by a hand-wheel in
reversing the engine.
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. Simultaneously onerating the air valve and gas valve of a
gas engine by

page_text: means of a lever fitted with a sliding block connected to govenors and acted upon
by an adjustable cam on a shaft rotated by chain-gear from the engine crank-shaft,
substantially as herein before described.
2. Actuating the valves of steam engines, and compressed-air engines, by an
adjustable cam driven by chain-gear from the engine shaft and acting alternately
upon slide blocks, which are connected to govenors and carried by pivoted arms or
levers attached to the valves, substantially as herein before described.
3. Actuating the valves of reversing steam-engines by the combination of
mechanism, substantially as hereinbefore described.
Dated this 16th day of January 1895.
ARTHUR E. LONES.