Improvements in Motor Carriages for Common Roads.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in Motor Carriages for Common Roads.
ERNEST JOHN CHUBBE, 53, Victoria Street, Westminster, Engineer, ALFRED
WILLIAM SOUTHEY, San Remo, Haywards Heath, Sussex, Engineer, do hereby
declare the nature of this invention to be as follows:-
The object of our invention is to construct a motor carriage which shall be
simple, cheap and capable of working for long periods without any attention.
We carry our invention into effect by constructing a special motor driven by
superheated steam, which is generated in a generator in which coke is preferably
used as a fuel.
We construct the generator of elements consisting of sets of concentric weldless
steel tubes, placed horizontally and connected at the front ends by malleable iron
castings into which they are screwed.
The passages through the castings are preferably drilled.
The back ends of the outer tubes are fitted with plugs, the circulation being
through the inner tubes returning between the inner and outer, the tubes being
connected in series.
The case of the generator is preferably of the shape of a locomotive boiler so
as to fit under the body of the carriage, the furnace being in front.
The case is constructed of thin sheet iron, the furnace being lined with iron
plates backed with asbestos cement, and the tube box with asbestos millboard,
painted with a solution of sillicate of potash.
The case is framed together with light angle iron, the top being removable
to allow the tubes to be placed in position.
A. horizontal flue is provided leading to the back of the carriage and a removable
vertical flue with cowl is fitted on the end when starting the fire.
A steam blast is placed in the flue to produce a forced draught for starting.
The exhaust steam from the engine is passed throught a superheating tube
in the furnace and thence to a nozzle in the flue.
The furnace must be as deep as possible and in starting the fire a little coal
should be used.
A check valve is provided on the feed pipe and a relief valve on the lower end of
the tubes, the spring of which is set to the maximum pressure required, any
excess of water being passed back to the pump through a suitable pipe.
A stop valve is provided at the upper end of the tubes and also a cock for the
blast.
The motor is constructed with three single acting cylinders with trunk pistons
fitted in line at angles of 45° the pistons being coupled to a single throw crank
shaft..
Two sets of piston valves are provided one for forward and the other for back-
ward running, these are worked by two eccentrics one on each side of the crank,
which works in an oil bath, stuffing boxes being provided to prevent escape.

page_text: A three way valve is used to control the steam admission to the two sets of valves,
and relief valves are fitted on the cylinders to allow for the escape of condensed
water.
A water pump, provided with ordinary lift valves, fitted so as to be easily
accessible, is driven by the engine through spur gear, this pump has two rams,
the first a hand operated ram being of double the area of the second ram driven by
the engine.
The power is transmitted from the motor to an intermediate shaft provided with
balance gear, through a chain.
On either side of the balance gear sets of double universal joints are fitted, to
allow for the play of the supporting springs.
Chain gear is used to transmit the power to the driving wheels.
The motor, generator and gear are carried on a frame of channel steel, suspended
by four spiral springs from two steel tubes which connect the front and back
axles.
These tubes are held at their ends in elastic lined metal sockets so as to allow the
wheels of the carriage to rise and fall independently.
The bearings for the chain pinions are clipped on to these tubes.
The front wheels are separately vertically pivoted in the centre of the hubs to
allow them to turn for steering, the pivots being on the boxes in which short
axle arms, fixed rigidly to the wheels, run.
Dated this 16th day of July 1898.
COMPLETE SPECIFICATION.
Improvements in Motor Carriages for Common Roads.
ERNEST JOHN CHUBBE, Engineer, and ALFRED WILLIAM SOUTHEY, Engineer,
both of 16, Elm Street, Gray's Inn Road, London, W.C., late of 53, Victoria
Street, Westminster, and San Remo, Haywards Heath, Sussex, 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 object of our invention is to construct a motor carriage which shall be
simple, cheap and capable of working for long periods without attention...
We carry our invention into effect by constructing a motor driven by
super-heated steam, which is generated in a generator in which coke is preferably
used as a fuel.
-
We construct the generator of elements of horizontal steel tubes, connected in
series. These elements are mounted in a thin sheet iron case which is lined with
asbestos millboard and cement."
A suitable fire-box with ordinary fire bars is provided below the tubes.
Horizontal flues are provided leading to the back of the carriage.
Nozzles are fitted in these flues through which the exhaust steam from the engine
is passed to produce a forced' draught.
A check valve and a relief valve are provided on the feed water pipe, and a stop
valve in the steam pipe.
The motor is constructed with three single acting cylinders with trunk pistons
fitted radially at any suitable angle, preferably 120° from one another to ensure
self-starting at any position of the crank, the pistons being coupled to a single
throw.crank shaft.
Two sets of piston valves are provided, these valves are single acting, the steam

page_text: pressure being on the top of the valve controlling the admission of live steam,
these valves are worked by two eccentrics fitted one on each side of the crank.
The direction of rotation of the engine is reversed by directing the admission of
steam to one or other of the sets of valves by means of a suitable cock.
A feed water pump provided with two rams is fitted so that one of the rams is
driven by the engine through spur reducing gear.
The second ram, which is of larger area than the first, is operated by a hand
lever for starting.
The power is transmitted from the motor to an intermediate shaft provided with
differential gear, through a chain.
On either side of the differential gear sets of double universal joints are fitted
to allow for the play of the supporting springs.
The motor, generator and gear are carried on a frame of channel steel suspended
by four spiral springs from two steel tubes which connect the front and back
axles.
These tubes are coupled to the axles by elastic lined metal bearings, so as to
allow the wheels to rise and fall independently.
The bearings for the chain pinions are clipped to these tubes.
The steering wheels are separately pivoted, the pivots being inside the boxes, 80
as to be as nearly in line with the tyres as possible.
Reference is made to the accompanying drawings;
Fig. 1, Sheet 1, shows a side elevation of car, Fig. 2, Sheet 2, the elevation
and cross section of elastic lined bearing for side tube, Fig. 3, Sheet 2, a section
of steering axle arm and box, Fig. 4, Sheet 3, a section of the motor showing
valves, & Fig. 5, Sheet 4, general plan of undercarriage of car.
The motor A fitted on the gear frame P₁ P₂ behind the generator B which is
placed so that the fire-box door may be accessible from the front of the car.
The motor drives the intermediate shaft F through chain gear, the chain wheel
forming the outer member of a set of differential gear G, the double universal
joints H, H₂ fitted on either side allow for the play of the supporting springs S S',
S S₂, S S., SS, the bearings for the pinions I, I, of the chains driving the car
wheels K, K, are clipped on the side tubes L, L, which connect the front and
back axles M N¹, M N2, of the car, these bearings are arranged to slide on the tubes
so that the tension of the chains may be adjusted.
The side tubes are coupled to the axle flaps by the bearings shown in Fig. 2.
These bearings consist of metal blocks M, M, M, M lined with any suitable elastic
material T, elastic rings F R being interposed between the collars G R and the
metal block M.
The object of these elastic lined bearings is to allow either of the wheels to rise
or fall independently when encountering an obstacle, which would be impossible
if the side tubes were held rigidly.
The steering wheels N₁ N₁ are pivoted vertically on the axle inside the boxes Z,
as shown in Fig. 3, the axle arms S being slotted to allow this, the point of
pivoting is as nearly in line with the tyres as possible, but with this arrangement
it cannot be exactly at the geometrical centre of the wheel.
1
2
The arms are provided with lugs V₁ V₂ through which the ends of the steering
levers pass.
The gear frame is constructed of two channel steel bars running longitu-
dinally P P and supported by two cross bars O P₁ O P₂ which are carried on
four spiral springs SS, S S S S S S by rods 0, 0, 0, 0, clipped on the side
tubes.
.
2
2
The machinery is by this arrangement more perfectly protected from vibration
than would be possible if it were supported on the car body springs, as, in
vehicles constructed to carry heavy loads, when unloaded the springs are not
effective.
The tubes in the generator B are preferably concentric, of the Field tube type,
arranged horizontally and connected in series. The feed water is supplied by a

page_text: pump C worked by the motor A, through spur reducing gear A S, the pump being
provided with an extra ram C B for hand starting. On the feed water pipe, not
shown, is a relief valve D the spring of which is set at the maximum water
pressure required.
The supply of steam to the motor is controlled by a cock E the connecting
pipes not being shown.
The motor Fig. 4 is provided with two single acting valves A A, A A, on each
cylinder, the direction of rotation being reversed by directing the admission of
steam to one or other of the valves, the valve through which, for the time being,
the live steam does not pass, is used for the exhaust.
The fuel and water are carried in the body of the car.
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:-
1. The steam propelled motor carriage substantially as described and shown in
the drawings.
2. In motor vehicles for use on ordinary roads the elastic bearings for bars
connecting the front and back axles substantially as described.
E. J. CHUBBE.
A. W. SOUTHEY.