Year: 1896

page_text: We, ERNEST JOHN CLUBBE and ALFRED WILLIAM SOUTHEY both of
16, Elm Street, Gray's Inn Road, in the County of Middlesex, Electrical
Engineers, do hereby declare the nature of this invention to be as follows:-
This invention relates to the hydraulic engines of a locomotive carriage wherein
a circulating column of fluid is used as the medium of transmitting power from the
motor to the driving wheel axles and wherein the length of stroke of the pump is
varied in order to vary the relative effective capacities of the pump and engines
inversely as the required ratio of the angular velocities of the motor shaft running
at a constant speed and of the driving wheels.
The first improvement relates to the means of varying the stroke of the pump
by varying the ratio of the effective areas of a lever operating it and it consists in
the combination with the shifting fulcrum of the lever of a double-acting hydraulic
engine coupled to the movable fulcrum or its support so that the position of the
fulerum and consequently the ratio of the lever arms is dependent on the position
of the piston in the cylinder to which the fluid pressure is admitted under the control
of a hand operated valve whereby the inlet and outlet of the fluid may be
interchanged between the opposite ends of the cylinder or the fluid be locked in the
cylinder as required.
The second improvement relates to the mode of suspending the hydraulic
engines used for propelling the vehicle. These engines are of the double-acting
oscillating inclined cylinder type, the pistons of the two cylinders being coupled to
the same crank, and the object of the improved mode of mounting them is to
combine lightness with freedom from prejudicial effects by vibration and jolting
particularly in the case of a common road vehicle. With this object each cylinder
is mounted by its trunnions in a U-shaped frame whose members are coupled by
bearings to the crank shaft, the other end of the frame being suspended by spiral
or other springs pendent from the frame of the vehicle the pipe connectious of the
cylinder trunnions with the fluid circulating system being so arranged as to permit
of the limited angular motion of the cylinder supporting frame about the crank
axle as a centre consequent on the play of the springs which motion whilst slightly
varying the relative position of the two engines of the pair coupled to the same
crank does not materially affect their action.
Dated this 10th day of March 1896.
A. M. & WM. CLARK,
53, Chaucery Lane, London, Chartered Patent Agents.

page_text: We, ERNEST JOHN CLUBBE and ALFRED WILLIAM SOUTHEY both of
16, Elm Street, Gray's Inn Road, in the County of Middlesex, Electrical
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 :-
This invention relates to the propulsion of locomotive carriages through the
medium of a circulating column of fluid whereby power is transmitted from a
pump actuated by a motor to hydraulic engines coupled to the driving wheel
axles, as described in a previous Application for Letters Patent dated the 25th day
of February 1896 No. 4259; and the invention consists, first, in applying the
hydraulic pressure to vary and maintain the ratio of the effective capacity of the
pump to its total capacity in order to vary the relative effective capacities of
the pump and engines inversely as the required ratio of the angular velocities
of the motor shaft running at a constant speed and of the driving wheels. This
end is accomplished by applying a double acting hydraulic engine to regulate the
effective radius of a crank lever arm so that the length of stroke of the pump is
dependent on the position of the piston in the cylinder to which the fluid pressure
is admitted under the control of a hand operated valve whereby the inlet and
outlet of the fluid may be interchanged between the opposite ends of the cylinder
or the fluid be locked in the cylinder as required.
The invention relates, secondly, to the mode of suspending the hydraulic engines
for propelling the vehicle so as to combine lightness with freedom from prejudicial
effects by vibration and jolting.
The invention is illustrated in the accompanying drawings forming part of this
specification wherein Figures 1 to 5 relate to the first part, and Figures 6 and 7 to
the second part, of the invention.
Referring to the first part,
Figure 1 is a face view of the hydraulic stroke regulating device.
Figure 2 is a section on line 2. 2 Figure 1.
Figure 3 is a longitudinal section on the axis of the hydraulic cylinder.
Figures 4 and 5 are longitudinal and cross sections shewing the water pressure
passages.
A is the shaft of the prime motor of any kind, running at a constant speed and
mounted in a bearing B. C is the crank pin coupled by a link to the piston of the
hydraulic pump (not shewn) the stroke of which is varied for the purpose above
stated by varying the effective radius of the crank arm. For this purpose the
crank pin is carried by a crosshead D fitted to slide between longitudinal gibs e on
the crank arm E in one with the shaft A. and it is attached to the rod f of the
piston F of a double acting hydraulic cylinder G mounted on the crank arm E and
whose opposite ends are in connection with passages H I through the crank arms E
and through the shaft A. These passages H I respectively communicate through
radial orifices hi with annular passages J K in the shaft bearing to which are
connected pipes which are controlled by a two-way hand operated valve (not
shewn) whereby the two ends of the cylinder G may be interchangeably connected
with the flow and return circulation pipes connecting the delivery and admission of
the pump with the admission and exhaust chambers common to two independent
pairs of hydraulic engines actuating the independent driving wheel axles. The
area of the cylinder & must be larger than that of the cylinder of the pump (not
shewn) in order that the crank pin may be moved against the pressure of the pump
By suitably operating the valve the water pressure may be admitted to either end

page_text: of the cylinder G to move the crank C for the purpose of altering its radius as
required, and after being so adjusted the valve may be turned so as to lock the
water in both ends of the cylinder and so maintain the crank at whatever effective
radius it is set. L is an eccentric on the motor shaft for working the pump.
valves.
Referring to the second part of the invention Figure 6 is a plan view of one of
the two pairs of engines and one of the driving wheels and axles and Figure 7
is a side elevation shewing one pair of engines and the spring supporting slings
therefor.
The engines L, L are of the double acting oscillating inclined cylinder type, the
two pairs of such engines being applied to actuate the independent axles M of
the driving wheels. The pistons of the two cylinders of a pair are coupled to the
same crauk N and in order to combine lightness and freedom from the prejudicial
effect of vibration of the vehicle body and jolting of the wheel axle consequent on
the play of the vehicle springs O each cylinder is mounted by trunnions at its
outer end in a U-shaped sling frame formed of a pair of radius links P connected
together at their outer ends by a crosshead and coupled at their inner ends to the
crank shaft, the outer ends of these radius sling frames being suspended by spiral or
other springs Q attached to the under frame or body of the vehicle. The sling
frames of the two engines of a pair are normally inclined at about 120° to each
other, as shewn, so that these frames and the cylinders which they support
participate only in the vertical jolting motions of the axle by describing limited
angular movements which do not materially affect the action of the engines, the
fluid circulating pipes connected to the trunnions being of sufficient length to
permit of this slight angular motion of the cylinder supporting frame.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
1. In a locomotive carriage propelled through hydraulic transmission as
described, the combination of a crank lever arm of variable effective radius
operated by the motor, a hydraulic cylinder for varying and maintaining such
radius and for thereby determining the effective stroke of the hydraulic pump by
such crank, and of hand operated valves and water-ways whereby the cylinder may
be put in and out of communication with the flow and return pipes of the hydraulic
transmission system substantially as and for the purpose specified..
2. The combination of parts constituting the hydraulic variable stroke device as
and for the purposes described and as shewn in the drawings.
3. In a locomotive carriage the combination of radius sling frames supported at
one end by the crank axle and at the other by springs attached to the vehicle body
or framework, and hydraulic engines mounted on the said sling frames and driving.
the axle cranks for the purposes described.
& Doaambar 1806
A. M. & WM. CLARK,
53, Chancery Lane, London, Chartered Patent Agents.