Improvements in Self-acting Lubricators for Steam Engines and other Purposes.
Year: 1888

page_text: Date of Application, 6th Sept., 1888
Complete Specification Left, 6th June, 1889-Accepted. 6th Sept., 1889
PROVISIONAL SPECIFICATION.
Improvements in Self-acting Lubricators for Steam Engines and
other Purposes.
I GEORGE MAULE MARCHANT, of Chapel Hill, Huddersfield, Yorkshire, Brass
Founder and Finisher do hereby declare the nature of this invention to be as
follows:-
This invention has reference to lubricators for supplying lubricant to the cylinders
of steam engines and other objects requiring to be constantly lubricated; and my
present Improvements have reference to a prior patent granted to me on the 29th
November 1878, No. 4869 which consisted in the employment of a cam for raising
a piston to a given height, but when such cam had raised the piston to its highest
point, a strong spiral spring forced the piston suddenly down so as to eject the
lubricant from the piston into the cylinder, and this was dono against the pressure of
steam within the cylinder.
According to my present invention I still propose to use, the cam and piston, but
to dispense with the spring and use instead thereof a dead weight or weighted lever
convenient placed so that as soon as the cam has raised the piston to its highest point
the dead weight or weighted lever, which is in connection with the piston, will
suddenly make the piston descend to eject the lubricant.
Instead of using a weight or weights for forcing down the piston, I may use com-
pressed india-rubber or other elastic body, inserted in a light shell, screwed on the
top of the oil vessel, and in order to protect the india-rubber from the action of grease,
the cover of the rubber is made with a layer of cork.
The method herein mentioned of working the piston is applicable, both to sight,
and non sight-feed lubricators.
TASKER & CROSSLEY,
Halifax, Agents.
COMPLETE SPECIFICATION.
"
.Improvements in Self-acting Lubricators for Steam Engines and
other Purposes.
I, GEORGE MAULE MARCHANT, of Chapel Hill, Huddersfield, Yorkshire, Brass
Founder and Finisher, 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 :-
This invention has reference to lubricators for supplying lubricant to the cylinders:
of steam engines and other objects requiring to be constantly lubricated, and in order
that my invention may be better understood, I herein make reference to the
accompanying sheet of drawings and to the letters of reference marked thereon.
Fig. 1 is a sectional elevation of a portion of a self acting lubricator shewing the
application of a dead weight for forcing down the piston to eject the lubricant, and
Fig. 2 is a diagram shewing the application of a weighted lever for the same
purpose.
Fig. 1 is a sectional elevation of a portion of a self acting lubricator, shewing the
application of a dead weight for forcing down the piston to eject the lubricant, and
Fig. 2 is a diagram shewing the application of a weighted lever for the same
purpose.
A is the cup or vessel in which is placed the lubricant, B is the piston working
within its cylinder C which is supported on the cup A; D and E are cams, the

page_text: former of which is secured to the piston B by the cotter or pin a passing through
the vertical slot in the cylinder C, while the last named cain E is placed loosely
upon the cylinder C, and is capable of revolving thereon. On the upper end of the
piston I place one or more blocks F whose combined weight is sufficient to force down
the piston when it has reached its highest point to eject the lubricant against the
pressure of steam within the cylinder of the engine. Rotary motion is given to the
cam by the worm G which gears into the worm wheel formed at the bottom of
the cam E, the worm G receiving its motion from a reciprocatory part of the engine,
through the medium of ratchet wheel, pawl, and lever, in the ordinary manner, thus,
when the lower eam is rotated, it gradually raises the upper cam and therefore the
piston B to the highest point, as shewn at Fig. 1, and when the upper cam is
released the dead weight F forces the piston B down and ejects the lubricant from
the said cylinder C into the cylinder of the engine or other object requiring to be
constantly lubricated, and this is repeated every time the lower cam reaches its
highest point,
Instead of the dead weight being placed upon the piston as shewn in Fig. 1, it may
be suspended at the end of a lever d, pivoted at e, the said lever being connected
at f to the upper end of the piston B as shewn in diagram Fig. 2.
In place of a weight or weights for forcing down or raising the piston, I may use
indiarubber or other elastic body as shewn in Fig. 3. where the cams D and E
occupy the same position and operate the piston B in precisely the same way as
shewn and described with reference to Fig. 1. In this case r represents the elastic
material surrounding the piston B and resting upon the collar on said piston, the
upper surface of the elastic substance bearing against the shoulder, which secures
it within the cylinder C. When the piston is raised by the cams D and E, the elastic
materialis.compressed between the collar and shoulder 2, so that when the cam D
is released the elastic body expands and forces down the piston so as to eject the
lubricant into the cylinder of the engine.
A suitable covering or packing of cork may be employed to protect the elastic
materials P and r from the action of grease or lubricant.
The methods, herein described and shewn, of working the piston, are applicable
both to sight and non-sight-feed lubricators.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
Firstly. In lubricators, the movement of a piston by dead weights for injecting
lubricant, in manner substantially as described and shewn in Fig. 1.
Secondly. In lubricators, the movement of a piston by a weighted lever for
injecting lubricant, in manner substantially as described and shewn in Fig. 2.
Thirdly. In lubricators, the movement of a piston by compressed indiarubber or
other elastic body, for injecting lubricant, in manner substantially as described and
shewn in Fig. 3.
Dated this 5th day of June 1889.
TASKER & CROSSLEY,
Halifax, Agents.