Improvements in Hydro-carbon Motors.
Year: 1897

page_text: WALTER HENRY CASLEY, of 97, Paris Street, Exeter, Cycle Dealer, and ALBERT
FRED WOODMAN, of 2, Bartholemew Street, West, Exeter, Builder, do hereby
declare the nature of this invention to be as follows:-
-
This is an invention designed for measuring the oil charge for hydrocarbon
motors.
A slide valve has a recess or small chamber the size of which may be adjustable.
In one position of the valve this recess forms a portion of a passage or channel,
by means of a port or ports in the surface or surfaces against which the valve slides,
one end of which is in communication by any desired passages or valves with the
explosion chamber of the motor, and the other end with any gas, preferably the
atmosphere.
In a second position of the valve, the recess forms a portion of a passage or
channel, by means of a port or ports in the surface or surfaces against which the
valve slides, in connection with the oil supplying the motor, and in this position of
the valve a current of oil is caused to flow through the passage by gravity; or by
having the oil in the tank and in the pipes leading to and from the passage in con-
tinuous circulation and heating one portion of the circuit and so causing a current,
or by any suitable lifting or forcing device.
When in the first position the recess is cut off from the oil channel mentioned in
the second position.
The slide valve is caused to move from one to the other position by any suitable
gearing in connection with the motor, and is in the first position during at least a
portion of the suction or out stroke of the piston. The valve is kept tight up to its
face by a spring, weight or other suitable means and is of sufficient size to always
cover the ports of the oil channel.
In the case where the oil flows through the recess by gravity a pump or other
lifting device worked by the motor is preferably used to return any unused oil to
the supply tank.
Improvements in Hydro-carbon Motors.
WALTER HENRY CASLEY, of 97, Paris Street, Exeter, Cycle Dealer, and ALBERT
35 FRED WOODMAN, of 2, Bartholemew Street, West, Exeter, Builder, do hereby
declare the nature of this invention and in what manner the same is to be per-
Price 8d.]

page_text: formed, to be particularly described and ascertained in and by the following
statement:
This is an invention designed for measuring the oil charge for petroleum and the
like engines. A slide valve has a recess or small chamber the size of which is
preferably adjustable. In one position of the valve this recess forms a portion of
a passage or channel by means of ports in the surface against which the valve slides,
one end of such passage being in connection by any desired passages or valves with
the explosion chamber of the motor and the other end with the outer air.
In a second position of the valve the recess forms a portion of a passage or channel
by means of ports in the surface against which the valve slides, in connection with
the oil supplying the motor, and a current of oil is caused to flow through such
passage (and consequently through the recess filling it) either by gravity or any
forcing device.
When in either of these positions the recess is cut off from the ports with which
it is connected in the other position, and the recess is caused to move from one to
the other position by any suitable gearing in connection with the motor and is in
the position first above described during at least a portion of the suction stroke of the
piston, so that a clear passage being now permitted between the explosion chamber
and recess, the oil is drawn from the recess into this chamber, mixing in any desired
manner with any further air required for the explosion. Thus at every working
stroke of the motor a regular and equal quantity of oil, measured by and equal
to the capacity of the recess is used.
The valve is of sufficient size to always cover the ports of the passage connecting
with the oil supply and is kept close up to its face by a spring or other device, so that
no oil tight casing or packing surrounding the valve is necessary and the recess is
easily to be got at for adjustment, but the slide may be enclosed by a detachable
casing as a protection from injury.
The valve is fixed in any convenient position in proximity to the combustion
chamber.
In the case where the oil flows through the recess by gravity, this may be effected
as follows.
The oil inlet passage to the recess is connected with a reservoir at a higher level
than the recess, and the outlet passage with a tank at a lower level than the recess,
such tank holding the oil supply. A pump or other lifting device worked by the
motor is used to keep a sufficient quantity of oil in the higher reservoir, which is
fitted with an overflow pipe connecting with the lower tank.
The nature of the invention will be more clearly understood by reference to the
drawings and to the following description of them. The drawings are not to scale.
Fig. 1 is a longitudinal section of the valve.
Fig. 2 is a transverse section through the line J K.
Fig. 3 is a transverse section through the recess, when recess is in the position
over the air and suction ports.
A is the slide valve with recess B, working against the face of the piece G. The
spring keeping slide up to the face is omitted in the figures.
C is the inlet oil passage. D the outlet ditto.
E is the passage in connection with the outer air.
F is the passage in connection with the explosion chamber.
H is the valve spindle conveying the reciprocating motion to A.
The distance between D and F (see Fig. 1) is greater than the length of B so that
the recess cannot be in connection with the oil ports and the air ports at the same
time
The action of the valve is as follows
In the position of the valve shewn in Figs. 1 and 2 there is a clear passage
through C, B and D and the oil flows through this passage, driving out the air
from and filling the recess B. A now moves to the left (see Fig. 1) the current of
oil stops when B is no longer over C and D, and B, now full of oil, is brought into
position over F.

page_text: The suction stroke of the motor now takes place and the oil charge in B is drawn
through the passage F', followed by air through E clearing out the charge in B,
and thence finally into the explosion chamber. A then moves into the position
shewn in Fig. 1, and the above process is repeated.
In the above arrangement the recess is in the moveable slide and the ports of the
passages are in the fixed face against which the valve slides. A modification may
be made by placing the recess in the fixed face and the ports of the passages in the
moveable face of slide valve. Figs. 4 5 6 7 illustrate this modification.
Fig. 4 is a longitudinal section.
Figs. 5 6 7 are transverse sections through LM, NO, PQ, respectively.
The letters A to, H refer to the same parts as in Figs. 1. 2 3. The mode of
working is similar to the process before described, but it will be noticed that the
slide moves to the right (see Fig. 4) to bring the air and suction passages into com-
munication with the recess B.
To increase or reduce the amount of oil charge, the size of the recess is adjusted
accordingly. A method of adjustment is shewn in Fig. 8 which is a section
through recess and slide.
This method can be used for a recess of any shape on plan.
If the recess is circular on plan, it would be sufficient to have the head of screw
the same diameter as the recess.
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:-
In an explosion engine the combination of a slide valve and recess, a current of
oil passing through said recess, of which the capacity equals and measures the
volume of the oil charge, substantially as described.
Dated this Seventh day of February 1030.
W. H. CASLEY.
A. F. WOODMAN.