Improvements in the Valves and Valve Gear of Gas or Internal Combustion Motor Engines.
Year: 1896

page_text: Date of Application, 1st May, 1899
Complete Specification Left. 1st Feb., 1897-Accepted, 1st May. 1897
PROVISIONAL SPECIFICATION.
Improvements in the Valves and Valve Gear of Gas or Internal
Combustion Motor Engines.
I, GEORGE MOGHEE of Mountblue Engineering Works, Mountblue, Glasgow
North Britain, Engineer do hereby declare the nature of this invention to he as
follows:-
My invention relates. to improvements in gas motor engines having motor
cylinders working on the 4 stroke cycle, and the object of my improvements are
to simplify the valve, gear and make the engine silent--and more. efficient. in action
by dispensing with tapped or clack valves and using piston valves in series.
According to my invention as applied to an engine having two or more sets
of double cylinders mounted tandem together there may be one valve case
comprising the inlet for two cylinders and also the exhaust for another two motor
cylinders, in which said case are two inlet, two ignition and two exhaust ports
controlled by piston valves. Another valve case similarly organised serves as the
exhaust and inlet respectively for the aforesaid two sets of double cylinders thus
two valve cases serving 4, motor cylinders, the valve rods being reciprocated from
a. transverse valve shaft driven by 2 to 1 gear.. Each said valve case would have
located near ita centre one air or motor mixture supply inlet port on both sides
of which is a motor cylinder inlet port, each .controlled by a set of two. piston
valves on valve rod. Again, nearer each end of the case is located a motor
cylinder exhaust port one for each of the other two motor cylinders which with
another exhaust port near each of both ends of case is controlled by its respective
valve on both ends of valve rod or spindle. The ignition ports may be located
near the exhaust ports and controlled by exhaust valves.
In lieu of foregoing there may be two valve cases to each. cylinder, one case
for motor mixture inlet and the other case for exhaust, each said, valve cases
having respectively an inlet or exhaust port controlled. by a. piston valve, and a
cylinder port. The ignition port may be arranged on either valve. case but
preferably on mixture inlet case.
In. vertical engines the two inlet cases could be arranged one above the other
and the two exhaust cases also one above the other on each side of the. engine
and each set of two of their piston valve rods connected. together so as to
riciprocate together by a crank on its end of a transverse valve-shaft worked
by 2 to 1 spiral gear off. main.crank shaft.
In engines having a three throw crank shaft or cranks, set at 120°, in, order
to properly work the valves in unison with motor pistons, driving cranks at 120°
I set the valve cases a certain distance apart with the valve shaft between, and
drive their respective valves direct therefrom by connecting rods whose length
depends on the angle.
The valve-shaft may be parallel with crank. shaft. and driven. thereby at. half.
speed by spurr & pinion; one piston valve rod being, actuated by a crank.on said.
shaft and connected to one end of a fulcrumed lever on. top on bottom of engine,
the other end of said lever being connected to another valve rod so as to cause
cach said set, of valves to reciprocate oppositely simultaneously. The other set
of valve pistons would be similarly operated by another crank on other end of
elve shaft

page_text: In engines having two or more sets of twin motor cylinders arranged in parts
whose pistons give an impulse alternately, (i.e. of each pair) and arranged in a
row vertically over and driving opposite or 120° cranks the valve cases may be
arranged horizontally, one on each side of engine. Each valve case would have
two or more inlet porte, one for one of the two cylinders of each set, and also
two or more exhaust ports, one for the other of the two cylinders of each set.
Two ignition ports may be arranged near or to communicate with each other so
as to be served by one hot-pipe. Each case would be provided with inlet and
exhaust ports and the ports be controlled by piston valves on a rod reciprocated
by levere or arms from a valve shaft driven by 2 to 1 gear.
Dated this 30th day of April 1896
D. F. MASON, C.E.,
Glasgow, Patent Agent.
Improvements in the Valves and Valve Gear of Gas or Internal
Combustion Motor Engines.
I, GEORGE MCGHEE of Mountblue Engineering Works, Mountblue, Glasgow,
North Britain, 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 :-
My invention relates to improvements in gas motor engines having motor
cylinders working on the 4 stroke cycle, and the object of my improvements are to
simplify the valve gear and make the engine silent and more efficient in action by
dispensing with tapped or clack valves and using piston valves in series.
And in order that my present invention may be properly understood I have
appended the accompanying drawings whereon,
Figure 1 is a sectional elevation of part of an engine on the line a b Figs. 2
and 3 looking from centre.
Fig. 2 is a sectional plan on the line a¹ of Fig. 1.
Fig. 3 is a sectional plan on the line a" 6" of Fig. 1.
Fig. 4 is a diagrammatic view to illustrate two sets of tandem motor cylinders with
their respective inlet and exhaust ports arranged according to this invention.
According to this invention, as shewn at Figs. 1, 2, 3 and 4, as applied to an
engine of that class having two sets of double cylinders c, c, d, d', mounted tanden
together so as to give an impulse alternately, thus keeping their respective
connecting rods f, f, always in thrust, I apply one valve case comprising the
inlets e respectively for the two motor cylinders c c', and also the exhausts i,,
respectively for the other two motor cylinders d, d. In said case are respectively
the two inlet e, el, two ignition j,, and two exhaust ports i, 3, the ports e, e
being controlled respectively by the piston inlet valves k, k, and k', k'; and the
ports i, i, by the exhaust valves 1, . Another valve case similarly organised
serves as the exhaust for cylinders c, c', and inlet for cylinders d, d', respectively,
thus two valve cases serving 4 motor cylinders. The valves are reciprocated each
set by its connecting rod 9 actuated by an eccentric or crank on a transverse shaft
driven by 2 to 1 spiral gear, the two cranks being set at an angle of 90° to each
other to actuate each set of valves to work the motor pistons actuating the main
cranks t set opposite each other.
Each aforesaid valve case has located near its centre one main air and gas motor
mixture supply inlet port u Fig. 1, on each side of which are respectively the
cylinder inlet ports e, e', each respectively controlled by its set of two piston

page_text: valves k, k; kk on valve rod. Again, nearer the ends of the case is located the
cylinder exhaust ports i,, one respectively for each of the cylinders d, d¹. Other
exhaust ports w, w, are respectively controlled by the piston valves 1, 11 to com-
municate with ports i, . The ignition ports j,, are located near and controlled
by the exhaust valves w, wo or they may be located near and controlled by the sets
of valves k, k. Each set of aforesaid valves are rigidly fixed on its centre valve
rod and the two sets of valves effect the admission, ignition and exhaust to the four
cylinders as indicated.
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.
1st. In gas engines having two sets of two 4 stroke cycle motor cylinders giving
an impulse alternately, the combination of two valve cases having inlet, ignition
and exhaust ports controlled by piston valves, all constructed, arranged and
combined as and for the purposes described and shewn.
DAVID F. MASON,
Glasgow, Patent Agent.