Improvements relating to Oil Engines.
Year: 1899

page_text: Date of Application, 22nd July, 1899-Accepted, 7th Oct., 1899
Improvements relating to Oil Engines.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of the Agency for Foreign
Patent Solicitors, 322, High Holborn, in the County of Middlesex, 6, Lord Street,
Liverpool, and 6, Bank Street, Manchester, both in the County of Lancaster, and
Lower Temple Street, Birmingham, in the County of Warwick, Civil 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:
The present invention relates to oil engines and especially to improved means
for supplying oil thereto.
These supply devices consist of the valve with vaporising chamber placed on the
cylinder of the engine of an oil reservoir provided with a regulating chamber,
and of a device which serves to take up any oil which may flow back from the inlet
valve, and return it again into the reservoir. The supply device is moreover so
arranged that only an accurately measured quantity of oil can be drawn into the
evaporation chamber.
The arrangements are illustrated in the accompanying drawings, in which:―
Figure 1 is a section, and
Figure 2 is an elevation of the valve end of the cylinder.
Figure 3 is a section of the oil reservoir.
Figure 4 a section of the return device for the over flowing oil.
The vaporising chamber, in the example illustrated, takes the form of a
cylinder 1, the bottom of which is closed by a cover 2. This cover has on its inner
side a ring of porcelain pieces 3 which serve for igniting the explosive mixture;
4 is a tube screwed into a raised portion of the cover by means of which the motor
is started, the tube being heated by a lamp from the outside which causes the
oil in the tube to evaporise.
The supply valve for the oil is placed in the upper cover 5 of the vaporising
chamber. This valve is so arranged that it only admits a measured quantity
of oil at a time into the vaporising chamber. The valve proper 6 is held down
upon its seat by a spring 7; in the valve casing above the valve there is a place
or cup 8, the size of which corresponds to the quantity of oil necessary for each
explosion.
The oil is conveyed to the cup through the pipe 20. The oil which overflows
runs over the edge of the cup 8 and is conveyed away through the pipe 30.
The valve 6 is provided with two or more slots so that when the valve descends
in these slots the oil is squirted out in several streams into the vaporising
chamber.
Between the valve and the vaporising chamber proper, there is a channel
consisting of two parts 9 and 10. The streams of oil drawn in strike against

page_text: the sides of the division 9, and on account of the shape of the division these
streams must cross each other in the division 10 and thereby become finely divided
or sprayed so that the oil "drizzles" into the heater 3 which completes the
vaporization of the oil.
That the supply of oil through the pipe 20 to the cup 8 may be as uniform
as possible, an oil reservoir of the construction shewn in Fig. 3 is employed.
The reservoir 11 (which is filled with oil through a filter, 12) is in connection by
an opening 13 in the bottom thereof with a chamber 15, in which the oil
level is maintained constant by means of a float 17 pivoted on 16 having the
valve 14 which keeps the opening 13 closed, when the oil in the space 15 rises
above a certain level the operation of the float can be regulated by the greater
or lesser tension of the spring 22 on which the float is suspended through the
medium of the rod 21. The supply of oil to the pipe 20 can consequently be
regulated by means of the cock 18 and the divided slide 19 connected therewith.
As already mentioned, the oil overflowing from the cup. passes out through
the pipe 30. This pipe leads to the reservoir shewn in Figure 4. This has an
inner Hoor 32 of thin corrugated metal diaphragm, under which is a chamber 33
which is in communication with the blow off pipe of the motor. By the pulsations
of the diaphragm 32 produced by the pressure of the exhaust the oil coming into
the reservoir 31 through the pipe 30 is caused to rise in the pipe 40 which pipe
leads to the oil reservoir (see Figure 3).
In this manner an absolutely uniform supply of oil to the motor is attained
and at the same time by simple means the over plus of oil is conveyed back to
the reservoir.
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:
1. Apparatus for supplying oil in explosion motors characterized by a spraying
and vaporising apparatus consisting of a passage (9) of downwardly diminishing
area against the sides whereof the streams of oil aspirated through slots in the
valve body are protected and directed against one another below the said passage
in such a manner as to cause them to intersect and become finely sprayed before
the oil comes in contact with the igniters placed in the vaporising chamber.
2. In an explosion engine, the device that the oil is aspirated from a cup (8)
which only holds as much oil as is necessary for an explosion charge, while the
overplus of oil supplied to the cup runs over the edge thereof and through the
pipe 30 to the main reservoir.
3. In an explosion engine, the arrangement that the oil reservoir is connected
with a chamber 15 in which the level is kept uniform by means of a float (17)
from which chamber the oil is supplied to the cup (8).
4. In an explosion engine, the arrangement of a collecting reservoir (31) the
floor of which is formed of a diaphragm 32 under which a chamber (33) in con-
nection with the exhaust is arranged in such a manner that the diaphragm is
- caused to pulsate by the exhaust and thus pump up the oil from the collecting
vessel to the oil reservoir, substantially as described with reference to the
accompanying drawings.
W. P. THOMPSON & Co.,
322, High Holborn, London, W.C., Patent Agents for the Applicant.