Improvements in or relating to Lubricating Devices.
Year: 1899

page_text: Improvements in or relating to Lubricating Devices.
I, ARTHUR JAMES DRAKE, of Brandon House, Ellys Road, Coventry, Warwick-
shire, Assistant Manager, do hereby declare the nature of this invention to be
as follows:-
My invention relates to lubricating devices especially such as are intended for
application to engines or motors where the pressure in the cylinder exerts a
resistance to the feed of the lubricant, the principal object being to overcome the
above mentioned resistance. And my invention consists essentially in feeding
the oil under pressure.
I will describe my invention as applied to an autocar having a petrol motor
such as the well known "Daimler." The petrol is stored in one tank and I
store the lubricating oil in another tank below the level of the sight feeds. A
pipe leading to the petrol tank has a branch communicating with the oil tank
and is provided with a small hand air-pump whereby air may be pumped simul-
taneously into the two tanks so as to exert pressure on the respective contents
thereof before starting the motor. This pipe is also in communication with a
second pipe which receives part of the exhaust of the motor. The first pipe is
fitted with a tap and the second pipe is fitted with a non-return valve. The
second pipe is also provided with an escape valve that may be set to blow off
at any desired pressure greater than the pressure in the cylinder or cylinders of
the motor. A pipe leads from the bottom of the oil tank to the sight feed in
communication with the cylinder and this pipe is provided with a tap so that
the flow of oil may be regulated or cut off as desired. There may be any num-
ber of lubricators grouped together and adapted to distribute oil to the cylinder
or cylinders and other parts of the mechanism. The pipe is preferably continued
beyond the lubricators for the purpose of flushing the same with petrol or the
like when desired. For this purpose the continuation of the pipe may be put
into communication with the petrol tank and be provided with a suitable tap,
so that by cutting off the supply from the oil tank and opening the communication
from the petrol tank a quantity of petrol will be forced through the lubricators.
Instead of connecting the continuation with the petrol tank it, the said continua-
tion, may be fitted with a cup or the like adapted to receive petrol, benzoline or
the like which will descend through the lubricators by gravity when the oil
supply is cut off, and the other or flushing" tap is opened.
66
Thus it will be seen that before starting the motor pressure is obtained by hand
on the lubricating oil at the same time as on the petrol, and also that after the
motor is started, the pressure is kept up automatically on the lubricating oil as
well as on the petrol by the exhaust of the motor.
Although I have described my invention in connection with a petrol motor.
it will be readily understood that it may be applied to any motor or engine and

page_text: to machinery generally. And the pressure on the oil may be obtained by other
suitable means, if desired.
Dated this 14th day of July 1899
DOUGLAS LEECHMAN,
Fellow of the Chartered Institute of Patent Agents,
18, Hertford Street, Coventry,
75, Chancery Lane, London, W.C., and
9, Exchange Chambers, New Street, Birmingham
Patent Agent for the Applicant.
Improvements in or relating to Lubricating Devices.
I, ARTHUR JAMES DRAKE, of Brandon House, Ellys Road, Coventry, Warwick-
shire, Works Manager, 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:—
My invention relates to lubricating devices especially such as are intended for
application to engines or motors where the pressure in the cylinder exerts a
resistance to the feed of the lubricant, the principal object being to overcome the
above mentioned resistance. And my invention consists essentially in feeding
the oil under pressure.
And in order that my invention may be properly understood I will describe
the same with the aid of the accompanying diagram which shows one example
thereof as constructed for a Daimler twin cylinder petrol autocar motor. The
oil tank and sight feed are drawn to a larger scale than the other parts, thus
showing the construction of the former more clearly.
I store the lubricating oil in a tank 2 below the level of the sight feed or
other lubricators 3. From the exhaust connections 4 I lead a pipe 5 and pro-
vide the same first with a chamber 20 containing a dirt strainer, and next with
a suitable non-return valve 6 and an escape valve 7 which may be set to blow off
at any desired pressure greater than that in the cylinder or cylinders 21 of the
motor. Beyond these valves the pipe 5 has a branch 8 communicating with
the air space 9 above the oil in the tank 2; and, if the petrol tank be situated
below the level of the carburettor, another branch 11 may lead to the said petrol
tank. Another pipe 12 leads from the bottom of the oil tank to the sight feeds in
communication with the cylinders, and this pipe is provided with a tap 13 so
that the flow of oil may be regulated or cut off as desired. There may be any
number of lubricators grouped together and adapted to distribute oil to the
evlinder or cylinders and other parts of the mechanism such as the crank
chamber 22.
To enable the lubricators 3 to be flushed with petrol or the like when desired,
the pipe 12 is preferably continued (14) beyond the said lubricators and may be
put into communication with the petrol tank by a pipe 16 and be provided with
a suitable tap 17, so that by cutting off the supply from the oil tank by the
tap 13 and opening, the communication from the petrol tank by the tap 17, a
quantity of petrol will be run through the lubricators. Instead of connecting
the continuation 14 with the petrol tank it may be fitted with a cup or the like 18
adapted to receive petrol, benzoline or the like which will descend through the
lubricators by gravity when the oil supply is cut off, and the pressure in the cylin-
ders is relieved. Both flushing arrangements are shown in the diagram. The pipe 5
may be provided with a hand pump so that before starting the motor pressure

page_text: may be obtained by hand on the lubricating oil. After the motor is started, the
said pressure is kept up automatically on the lubricating oil, by the exhaust, and
in practice I find that sufficient pressure is obtained in the tank 2 by the mere
action of starting the motor and consequently the hand pump is not required.
The pipe 5 is preferably provided with a tap 19 beyond the branch 8 for the
purpose of relieving the pressure in the tank 2 when stopping the car or at
other times.
Although I have described my invention in connection with a petrol motor,
it will be readily understood that it may be applied to any motor or engine.
And the pressure on the oil may be obtained by other suitable means if preferred.
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. A lubricating device in which the lubricant is fed under pressure.
2. A lubricating device constructed, arranged and adapted to operate sub-
stantially as herein described and illustrated.
3. A lubricating device comprising a tank, a pipe through which fluid pres-
sure is exerted on the lubricant in the said tank and another pipe through, which
the lubricant is conveyed, directly or indirectly, from the said tank to the
parts to be lubricated, substantially as set forth.
4. In a lubricating device in which the lubricant is fed under pressure, the
employment of an exhaust to exert the said pressure.
5. In a lubricating device in which the lubricant is fed under pressure, the
employment of an escape valve for the purpose set forth.
Dated this 19th dow of
1 1000
DOUGLAS LEECHMAN, M. Cv. E.I.,
Fellow of the Chartered Institute of Patent Agents,
18, Hertford Street, Coventry,
9, Exchange Chambers, New Street, Birmingham, and
75, Chancery Lane, London, W.C.,
Patent Agent for the Applicant.