Improvements in Motor Tricycles and Motor Vehicles Driven by Petroleum Spirit Engines.
Year: 1899

page_text: Date of Application, 10th Jan., 1899
Complete Specification Left, 26th July, 1899-Accepted, 9th Sept., 1899
PROVISIONAL SPECIFICATION.
Improvements in Motor Tricycles and Motor Vehicles Driven by
Petroleum Spirit Engines.
I, DAWSON FYERS DUCKWORTH TURNER, 37, George Square, Edinburgh, Doctor
of Medicine, do hereby declare the nature of this invention to be as follows:―
My invention relates to a method of heating the petroleum spirit in cold
weather or after a long run (when the lighter spirit has fractionated off) so as
to obviate the difficulty of starting the engine. "A tube is carried through the
spirit reservoir or carburettor through which warm water may be passed & if
necessary retained there until the spirit has been raised fo a sufficient tempera-
ture to freely give off its vapour. This tube may form part of the branch exhaust
tube found in some moto-tricycles.
TIL
1
1000
Improvements in Motor Tricyoles and Motor Vehicles Driven by :
Petroleum Spirit_Engines.
I, DAWSON FYERS DUCKWORTH TURNER, of 37, George Square, Edinburgh,
Doctor of Medicine, 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 invention relates to a method of heating when desirable the petroleum
spirit employed in certain classes of motor tricycles and other motor vehicles.
When the spirit does not vaporise freely difficulty is often experienced in
starting the driving engine. This may occur if the spirit is of somewhat too
dense a quality, or if the more volatile portion of it has fractionated off, or if
the weather is cold. In all such cases the difficulty may generally be obviated
by warming the spirit. This I accomplish in the manner herein described.
Through the spirit receiver or carburettor of the motor is carried a tube or
passage or tubes or passages preferably coiled, the inlet and outlet enda of which
are outside the reservoir or carburettor (in what follows I shall speak of these
tubes or passages as tubes).
The outlet end of the tube which should be lower than the inlet end is prefer-
ably provided with a tap or stop cock and the inlet end with a funnel. When it
is desired to raise the temperature of the spirit contained in the reservoir or car-
burettor, heated water is caused to pass through the tube, being poured in at
the inlet end and issuing at the outlet. If the outlet orifice is furnished with a
ד6 ...F

page_text: tap, this tap can be closed after a small quantity of water has issued from the
outlet so as to retain the water for a time within the tube. In certain cases it
is desirable to retain the water in the tube after the engine has been started, the
temperature of the spirit being thus prevented from falling to too low a point.
In some motor bicycles and other motor vehicles a branch tube from the main
exhaust pipe is carried through the spirit reservoir or carburettor with the object
of warming the petroleum spirit by means of exhaust gas while the engine is
running. This branch tube may be adapted to the purpose of my invention in the
following manner. An inlet tube or funnel suitable for the admission of heated
water and provided with a tap or stop cock (hereinafter called tap No. 1) is joined
to the branch tube at any convenient point between the spirit reservoir or car-
burettor and the main exhaust pipe (refer to the drawing). Between such junction
and the main exhaust pipe there is inserted in the branch tube a second tap
(hereinafter termed tap No. 2) by means of which the branch tube may be tem-
porarily dis-connected from the main exhaust pipe. A third tap (hereinafter
termed tap No. 3) may be provided at or near the outlet end of the branch tube.
When it is desired to raise the temperature of the petroleum spirit contained
in the spirit reservoir or carburettor (for example previously to starting the
engine), taps Nos. 1 and 3 are opened and tap No. 2 is closed; heated water is
then poured into the inlet tube or funnel; the water passes through the portion
of the branch exhaust tube which is within the spirit reservoir or carburettor
raising the temperature of the contained petroleum spirit and escapes through
tap No. 3 at the outlet. After a small quantity of water has passed through the
branch tube, tap No. 3 may be closed and heated water may be retained in the
tube for a sufficient length of time to raise the temperature of the petroleum
spirit to the required degree but a continuous flow is generally. more quickly
effective. When the petroleum spirit has become warm enough to give off vapour
freely, the tube is emptied of water by opening taps No's 1 and 3 (if both or
either should be closed).
After the water has escaped tap No. 3 is left open, tap No. 1 is closed and tap
No. 2 is opened. The engine may then be started and exhaust gas will be free
to pass through the branch exhaust tube as usual and maintain the temperature
of the spirit. "If the tube be one provided solely for the passage of heated water
and not for part of the exhaust gas, it need not be furnished with stop cocks at
all or it may have one at its outlet only or one at both ends:
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:-
I. In motor tricycles or other motor vehicles driven by petroleum spirit engines,
the employment of one or more tubes or passages passing through the spirit
reservoir or carburettor through which heated water may be passed in order
to raise the temperature of the spirit for the purpose hereinbefore mentioned
substantially as hereinbefore described.
II. In a petroleum spirit motor tricycle or other motor vehicle having a
branch exhaust tube or passage passing through the spirit reservoir or carbur-
ettor, the combination with this tube or passage of an inlet tube or funnel and
stopcocks for the passage of heated water for the purpose hereinbefore mentioned
substantially as herein before described.