Improvements in Lubricators.
Year: 1889

page_text: Date of Application, 27th May, 1889
Complete Specification Left, 26th Feb., 1890-Accepted, 12th Apr., 1890
PROVISIONAL SPECIFICATION.
Improvements in Lubricators.
We JOHN DEWRANCE and GEORGE HENRY WALL, both of 158 Great Dover
Street, London, S.E. Engineers do hereby declare the nature of this invention to be
as follows:-
It is desirable that those in charge of engines especially Locomotive Engines
should be able to inject a definite quantity of oil into the engine with the least possible
amount of trouble.
We effect this by an apparatus which is situated in the cab of the locomotive or
in the most convenient place for the engine attendant in the case of other engines.
The apparatus consists of a vessel into which oil is poured through a cock, valve,
or screw plug at the top, and from which water can be drawn by a cock or valve at
the bottom. A pipe is led, or connection is made from the boiler or steam pipe to this
vessel and provision made for the condensation or supply of sufficient water to replace
oil as it is expelled from the vessel, so that while it is in work the vessel is always
full, and subjected to a pressure in excess of the pressure in the part of the engine
where it is desired to deliver the oil.
At the top of the oil vessel is a cylinder, one end of which for convenience of
reference is called, the oil trap, the communication to this part is sufficiently free to
allow water to fall out & sink and oil to take its place.
The oil trap forms part of or is concentric with a cylinder which for convenience
of reference is called, the cylinder, at the further end of the cylinder there is a valve
seat. A plunger fits into the cylinder and forms part of or is connected with a
spindle which passes through a cavity from which is a communication by connections
or pipes as may be necessary to the part of the engine where it is desired to deliver
the oil.
The spindle then passes through a stuffing box and finishes in a handle of
convenient form.
About the middle of the plunger there is a hole through the side of the cylinder,
which for convenience of reference is called, the blow hole, communicating with the
boiler or steam pipe either distinct from or in connection with the connection
previously mentioned for supplying water and steam to the oil vessel.
The action is as follows: When it is desired to oil the engine the spindle is pushed
in, this operation first opens the valve and then the plunger enters the oil trap which
it fits, there are one or more holes through the plunger by which the oil in the oil trap
passes to the other side of the plunger as it is being pushed in, this same movement
also uncovers the blow hole before mentioned and water or steam from the boiler
passes through the part of the cylinder vacated by the plunger and drivesout the oil
past the valve seat and along the pipe or connection to the part of the engine
where it is desired to deliver the oil.
The pipes may be so arranged that a certain quantity of water precedes the
steam and mixing with the oil more effectually distributes it over the surfaces to be
lubricated, the steam following the water thoroughly clears the pipes or connections.
When the engine attendant removes his hand from the handle of the spindle the
pressure in the vessel acting on the area of the spindle forces it forward, by this
motion the plunger first covers the blow hole, and then the valve comes to its seat,
closing the outlet, the oil trap then re-fills with oil, and the apparatus is again ready
to discharge another quantity of oil whenever the engine attendant thinks it
necessary.
The same result may be attained by modified forms of the apparatus.

page_text: A slide valve either flat or round may contain a space which serves as the oil trap.
and this oil trap has a free opening for the admission of oil from the vessel while in
one position and an inlet for steam, and outlet to the part to be lubricated in the other
position. The slide valve may be actuated by pushing or pulling it and may or may
not be caused to return automatically.
Dated this 27th day of May 1889
-
COMPLETE SPECIFICATION.
Improvements in Lubricators.
We JOHN DEWRANCE and GEORGE HENRY WALL, both of 158 Great Dover Street,
London S.E. Engineers, 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 :-
It is desirable that those in charge of engines, especially Locomotive engines
should be able to inject a definite quantity of oil into the engine with the least possible
amount of trouble.
We effect this by an apparatus which is situated in the cab of the locomotive or
in the most convenient place for the engine attendant in the case of other engines.
The apparatus consists of a vessel into which oil is poured through a cock,
valve or screw plug at the top and from which water can be drawn by a cock or
valve at the bottom. A pipe is led or connection is made from the boiler or steam
pipe to this vessel and provision made for the condensation or supply of sufficient
water to replace oil as it is expelled from the vessel so that while it is in work the
vessel is always full and subjected to a pressure in excess of the pressure in the part
of the engine where it is desired to deliver the oil.
At the top of the oil vessel is a cylinder one end of which for convenience of
reference is called the oil trap, the communication to this part is sufficiently free to
allow water to fall out and sink, and oil to take its place.
The oil trap forms part of or is concentric with a cylinder which for convenience
of reference is called, the cylinder: at the further end of the cylinder there is a valve
seat. A plunger fits into the cylinder and forms part of, or is connected with a
spindle which passes through a cavity from which is a communication by connections
or pipes as may be necessary to the part of the engine where it is desired to deliver
the oil.
The spindle then passes through a stuffing box and finishes in a handle of convenient
form.
There is a hole through the side of the cylinder, which for convenience of
reference is called, the blow hole :-communicating with the boiler or steam pipe
either distinct from or in connection with, the connection previously mentioned for
supplying water and steam to the oil vessel.
;
The action is as follows:-When it is desired to oil the engine the spindle is pushed
in the plunger enters the oil trap which it fits, there are one or more holes through
the plunger by which the oil in the oil trap passes to the other side of the plunger as
it is being pushed in, this same movement also uncovers the blow hole before
mentioned and opens the outlet around the spindle and water or steam from the
boiler passes through the part of the cylinder vacated by the plunger and drives out
the oil along the pipe or connection to the part of the engine where it is desired
to deliver the oil.
The pipes may be so arranged that a certain quantity of water precedes the
steam and mixing with the oil more effectually destributes it over the surfaces to
be lubricated, the steam following the water thoroughly clears the pipes or connections.
When the engine attendant removes his hand from the handle of the spindle, the
pressure in the vessel acting on the area of the spindle, forces it forward, by this

page_text: motion the plunger first covers the blow hole and then the valve comes to its seat
closing the outlet, the oiltrap then refills with oil and the apparatus is again ready to
discharge another quantity of oil whenever the engine attendant thinks it necessary.
The same result may be attained by modified forms of the apparatus: the slide
valve may be flat or of any other form and may contain the space which serves as
the oil trap and this oil trap has a free opening for the admission of oil from the vessel
while in one position and an inlet for steam and outlet to the part to be lubricated in
the outer position. The slide valve may be actuated by pushing or pulling and may
or may not be caused to return automatically.
When two oil deliveries are required the outlet from the cylinder is by a
passage on one side only of the spindle and this outlet is turned in one direction
to communicate with one delivery pipe, and in the other direction to communicate
with the other delivery pipe, the handle is shaped or marked so as to indicate into
which delivery pipe the oil is being delivered. In this case there may be a chamber
provided to retain sufficient water to provide for more than one discharge.
The cylinder and valve seat may constitute a renewable part so as to be easily
replaced when worn.
On the accompanying sheets of drawings Fig. 1, Sheet 1, represents a sectional
elevation of a lubricator having one oil delivery and Figs. 2, 3, 4, 5, 6 Sheet 2,
represent a similar lubricator with two oil deliveries. The various parts are indicated
by the following letters :-
, water chamber.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is:-
A lubricator having a slide valve mechanism that by a reciprocating movement
traps a definite quantity of oil and gives a flush of water and steam to drive the oil
into the part to be lubricated substantially as illustrated and as described.
Dated this 26th day of Faber 1800
JOHN DEWRANCE.
GEORGE HENRY WALL.