IMPROVEMENTS IN LUBRICATORS PARTICULARLY APPLICABLE TO MOTOR ENGINES.
Year: 1883

page_text: LETTERS PATENT to Charles Henry Andrew of the Firm of Messieurs JE H
Andrew & Cy of Stockport in the County of Chester Engineer, for an
Invention of IMPROVEMENTS IN LUBRICATORS PARTICULARLY APPLICABLE TO
MOTOR ENGINES
(Void by reason of the Patentee having neglected to file a Specification
in pursuance of the conditions of the Letters Patent.)
PROVISIONAL SPECIFICATION left by the said Charles Henry Andrew at
the Office of the Commissioners of Patents on the 28th April 1883.
CHARLES HENRY ANDREW of the firm of Messieurs J. E. H. Andrew & Coy of
Stockport in the County of Chester Engineer. "IMPROVEMENTS IN LUBRICATORS
PARTICULARLY APPLICABLE TO MOTOR ENGINES'
"
The object of my Invention when applied to the cylinder of an engine is to force
the oil or lubricant on to the head of the piston in order to lubricate it in the most
effectual and economical manner.
To accomplish this I construct the lubricator in the following manner;-The oil
vessel is attached to a smaller chamber provided with a valve or valves at the lower
part near where it screws into the engine cylinder.
The lubricator may be fixed so as to lead the oil over the centre of the piston
head when at the end of its stroke: to effect this a small branch tube is connected
from the lower portion of the lubricator to the space in the cylinder between the
piston and the cylinder cover. The oil drops from the upper vessel into the lower
one and is guided through a small hole on to a disc: this hole is partly filled by
the valve stem of the disc which is perforated with one or more small holes: the
disc is formed with a short projection on the lower side: the end of the disc is
conical and rests on a seating and covers the opening which leads the oil to the
cylinder: the upper side of the disc rests a short distance below and forms a cover
to the hole which admits oil to the disc. The disc and its valves at top and bottom
are free to rise and fall in a small chamber when acted on by steam or other
pressure.

page_text: The action is as follows:-When the engine starts a small quantity of oil will be
held in the space under the disc: as the piston reaches the end of its stroke and
steam or other fluid under pressure is admitted into the cylinder a small quantity
will pass through the tube into the small chamber under the disc in the lubricator,
the pressure instantly raises the disc and forces the oil under it through the oil
channel direct on to the piston in the cylinder: when the disc is raised by the
pressure it closes the opening above and prevents steam from entering the upper
portion of the lubricator.
As the piston recedes a spring or its own gravity causes the disc to fall and close
the lower opening which permits the oil to flow from the lubricator into the space
above the disc and through the small holes in it to the lower side where it remains
until pressure from the cylinder raises the disc, displaces the oil and forces it into
the cylinder.
A convenient method of regulating the quantity of oil which passes from the
reservoir into the lower vessel is to secure in the opening at the bottom of the
reservoir, the long end of a syphon, the shorter end of which stands at any desired
level in the reservoir: I place, preferably at the bend in the syphon a valve or cock
which can be easily regulated and set when the cover is removed.. In place of this
arrangement the syphon may be dispensed with and a valve placed between the
reservoir and lower vessel.
In a modification of my Invention I conduct the oil from the lower vessel by a
tube from which it drops on to a dish and passes through a hole in the bottom
screwed shank of the lubricator and the small rod of a piston into a chamber.closed
at the bottom end communicating with the cylinder of the engine by a side
passage this chamber extends upward into a larger one; a piston partly fills the
upper chamber and its rod or stem is free to slide in the smaller chamber:-there
is a space above and below the larger piston: these spaces are connected by tubes
to the cylinder of the engine to points one on either side of the piston when at the
end of its stroke.
The entrance of steam above the piston of the. lubricator causes it to descend,
displace the oil in the small chamber and force it into the cylinder on to the piston
to be lubricated.
The entrance of steam below the piston of the lubricator raises it and allows
the oil to pass from the dish through a passage in the screwed shank and the stem
of the piston into the small chamber ready to be forced into the cylinder.
In another modification steam pressure is used to force the oil into the cylinder
and a spring brings the piston back to its position.
This lubricator is particularly applicable for lubricating the cylinders and valvos
of engines but it may also be applied to bearings generally and when desired a lever
can be attached to the revolving shaft so, as to act on a convenient portion of the
lubricator and allow the oil to pass to the bearing in the quantity required.