IMPROVEMENTS IN APPARATUS FOR LUBRICATING THE CYLINDERS OF STEAM ENGINES AND OTHER PURPOSES
Year: 1877

page_text: LETTERS PATENT to George Maule Marchant, of Huddersfield, in the County.
of York, Brassfounder, for the Invention of "IMPROVEMENTS IN APPARATUS
FOR LUBRICATING THE CYLINDERS OF STEAM ENGINES AND OTHER PURPOSES."
PROVISIONAL SPECIFICATION left by the said George Maule Marchant
at the Office of the Commissioners of Patents on the 13th November
1877:
GEORGE MAULE MARCHANT, of Huddersfield, in the County of York, Brassfounder.
"IMPROVEMENTS IN APPARATUS FOR LUBRICATING THE CYLINDERS OF STEAM
ENGINES AND OTHER PURPOSES."
This Invention relates to apparatus for lubricating the cylinders of steam engines,,
steam chests, shafting, and similar purposes, and consists in the employment of a
vessel or receptacle to contain the lubricating material, which vessel communicates
with the inlet to the cylinder of a small force pump.
The outlet from the pump communicates with the cylinder or part to be lubricated
by means of a pipe or suitable connexion.
The piston rod of the pump is made with a yoke or band, within which works an
excentric, the motion being obtained from a ratchet wheel and catch actuated from
the cross head or other moving part of the engine; or, if applied to shafting,
other suitable mechanism for working the pump may be adopted according to
circumstances.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said George Maule Marchant in the Great Seal Patent Office on the
13th May 1878.
GEORGE MAULE MARCHANT, of Huddersfield, in the County of York, Brassfounder.
"IMPROVEMENTS IN APPARATUS FOR LUBRICATING THE CYLINDERS OF STEAM
ENGINES AND OTHER PURPOSES."
This Invention relates to apparatus for lubricating the cylinders of steam engines,
steam chests, shafting, and similar purposes, and consists in the employment of a
vessel or receptacle to contain the lubricating material, which vessel communicates
with the inlet to the cylinder of a small force pump or injector.
The outlet from the pump communicates with cylinder or part to be lubricated
by means of a pipe or suitable connexion.
The piston rod of the pump is made with a yoke or band, within which works an
eccentric, the motion being obtained from a ratchet wheel and catch actuated from
the cross head or other moving part of the engine; or, if applied to the shafting,
other suitable mechanism for working the pump may be adopted, according to
circumstances.
Such being the nature and object of my Invention, I will now proceed to describe
the manner of putting the same into practice.
Fig. 1 of the accompanying Sheet of Drawings illustrates a front elevation, and
Fig. 2 a section of a tallow cup constructed according to my Invention.
A is the cup or vessel within which is fixed a cylinder or tube B, having suitable
perforations b for the inlet of oil, tallow, or other lubricant which is placed within
the cup and around the outside of the tube B; C is the ram or piston rod (with
pistons and c¹ connected thereto) which receives reciprocatory motion from the
eccentric D working within the yoke or strap E, formed at the top of the piston rod,
and actuated by means of a ratchet wheel F and catch G from any moving part of
the engine.
The action of the apparatus is as follows:-When the piston rod is at its highest
point, as shewn in the Drawings, the groove or recess e between the two pistons is
opposite the inlet b, which groove is immediately filled with tallow, and on the
descent of the piston rod, the groove e is lowered until it comes to the enlarged part /
of the cylinder B, when the tallow is emptied and passes down the pipe or tube H
into the cylinder of the steam engine, to which it is attached; the piston rod then
ascends, and the groove is again filled with tallow to be delivered as before, and
so on at each stroke of the piston, the number of strokes and quantity of tallow
emptied into the steam cylinder being determined by the ratchet wheel and catch.
It will be seen that there are two pistons at the bottom of the piston rod; the
object of the upper one is to bring down the oil, the object of the lower one is to
prevent steam which is in the steam engine cylinder from passing up the tube or
pipe H and mixing with the tallow in the cup A. Valves and springs, I and J,
are used for preventing steam passing up the tube into the tallow.
Fig. 3 shews another construction of the internal parts of a tallow cup; in this
arrangement there is only one piston at the bottom of the ram or piston rod C,
which as tallow enters the cylinder B through the opening b, it is forced out up
tube g, opening the valve h, and passes down another tube j into the tube H, where
it enters the cylinder of the steam engine. It will thus be seen that steam passing
up the tube H from the steam cylinder presses against and has a tendancy to
close three different valves, and therefore cannot possibly mix with the tallow.
K is a tube for discharging air from the cylinder B, and L is a sieve placed at the
bottom of said cylinder for preventing dirt passing into steam engine cylinder.
Having now described the nature of my said Invention, and shewn by Drawings
how the same may be put into practice, I would have it understood that I do not
• confine myself to the precise details herein shewn and described, as the same may

page_text: be varied without departing from the main features of the Invention; but what I
do claim and believe to be new within the realm is, the general combination and
arrangement of the parts, herein shewn and described, for lubricating the cylinders
of steam engines and other purposes.
•
In witness whereof, I, the said George Maule Marchant, have hereunto set my
hand and seal, this Eleventh day of May, in the year of our Lord One
thousand eight hundred and seventy-eight.
G. M. MARCHANT. (Ls.)