AN IMPROVED CONSTRUCTION OF LUBRICATOR FOR SUPPLYING OIL AUTOMATICALLY TO STEAM ENGINE CYLINDERS
Year: 1884

page_text: We JOHN DEWRANCE and GEORGE HENRY WALL both of 158 Great Dover
Street Lambeth in the County of Surrey, Engineers do hereby declare the
nature of our Invention for "AN IMPROVED CONSTRUCTION OF LUBRICATOR FOR
SUPPLYING OIL AUTOMATICALLY TO STEAM ENGINE CYLINDERS to be as follows:-
In a central tube communicating with the Steam cylinder which by preference
is brought to the upper part of the oil vessel a valve seat is formed on which rests
a valve having a long guide fitting loosely into the tube; this valve allows of the
free inlet of steam to the oil vessel. Through the centre of this valve a hole is
drilled into which a small spindle is inserted, this spindle is so fitted into the hole
as to leave sufficient space for the required amount of oil to pass out of the vessel at
each stroke of the engine.
When steam is admitted to the cylinder it opens the inlet valve and passes into
the oil vessel when the pressure in the cylinder declines the inlet valve closes and
the pressure in the oil vessel being greater than the pressure in the cylinder a small
quantity of oil is forced out past the spindle.
The object of the use of the spindle is that a smaller capillary discharging orifice
is obtained by this means than could be obtained by a plain hole and the motion
of this spindle up and down at each stroke of the engine prevents this orifice
becoming choked. The oil is maintained above the discharging orifice by water
from condensation.
JOHN DEWRANCE.
GEORGE HENRY WALL.

page_text: We JOHN DEWRANCE and GEORGE HENRY WALL both of 158 Great Dover
Street, Lambeth in the county of Surrey Engineers do hereby declare the nature
of our invention for AN IMPROVED CONSTRUCTION OF LUBRICATOR FOR SUPPLYING
OIL AUTOMATICALLY TO STEAM ENGINE CYLINDERS, and in what manner the same
is to be performed, to be particularly described and ascertained in and by the
following statement:-
In a central tube marked a on the accompanying drawing which communicates
with the steam cylinder a valve seat is formed on which rests the valve b having a
long guide fitting loosely into the tube; this valve allows of the free inlet of steam
to the oil vessel.
Through the centre of this valve a hole is drilled into which a small spindle c is
inserted, this spindle is so fitted into the hole as to leave sufficient space for the
required amount of oil to pass out of the vessel at each stroke of the engine.
When steam is admitted to the cylinder it opens the inlet valve b and passes
into the oil vessel when the pressure in the cylinder declines the inlet valve closes
& the pressure in the oil vessel being greater than the pressure in the cylinder
small quantity of oil is forced out past the spindle c.
a
The object of the use of the spindle is that a smaller capillary discharging orifice
is obtained by this means than could be obtained by a plain hole and the motion
of this spindle up and down at each stroke of the Engine prevents this orifice
becoming choked.
The oil is maintained above the discharging orifice by water from condensation.
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 :-
:-
Firstly The construction of a lubricator having a free inlet by means of a
check valve and a restricted outlet formed by a spindle fitting loosely into a hole.
Secondly-The construction of a lubricator substantially as described.
Dated this fourth day of September 1884.
JOHN DEWRANCE.
GEORGE HENRY WALL.