IMPROVEMENTS IN APPARATUS FOR LUBRICATING STEAM CYLINDERS OR OTHER DEVICES WHERE THE LUBRICANT IS ADMITTED AGAINST A RESISTING PRESSURE
Year: 1883

page_text: LETTERS PATENT to William Phillips Thompson, Fel. Inst. P.A. of the
Liverpool and London Agency for Foreign Patent Solicitors, 6 Lord Street
Liverpool in the County of Lancaster, Civil Engineer for an Invention of
"IMPROVEMENTS IN APPARATUS FOR LUBRICATING STEAM CYLINDERS OR
OTHER DEVICES WHERE THE LUBRICANT IS ADMITTED AGAINST A RESISTING
PRESSURE A communication from Charles H. Parshall a person resident at
Detroit Michigan, United States America
PROVISIONAL SPECIFICATION left by the said William Phillips Thompson
at the Office of the Commissioners of Patents on the 11th January 1883.
WILLIAM PHILLIPS THOMPSON, Fel. Inst. P.A. of the Liverpool and London
Agency for Foreign Patent Solicitors, 6 Lord Street Liverpool in the county of
Lancaster. Civil Engineer. "IMPROVEMENTS IN APPARATUS FOR LUBRICATING
STEAM CYLINDERS OR OTHER DEVICES WHERE THE LUBRICANT IS ADMITTED AGAINST
A RESISTING PRESSURE" a communication from Charles H Parshall a person
resident at Detroit Michigan United States America
This invention consists in the combination of devices and appliances hereinafter
specified
In the drawings is presented a view in section and elevation of a lubricator
embodying the invention
It is the object of this invention to furnish a reliable lubricator for steain
cylinders and other devices in which the lubricant has to be admitted against a
resisting pressure to furnish at the same time a device which shall operate without
the maintenance of that pressure within the body of the lubricator; and finally,
one which shall operate by steain or other pressure without accumulations of
condensed water within the reservoir.
To this end, A represents the body of the oil reservoir. B is the stem whereby
it is connected with the steam chest. C is a pipe connecting the steam port
between the steam chest and the cylinder. This pipe C, connects with the plunger
cylinder D, within the body of the lubricator. Within this plunger cylinder D,

page_text: is a plunger D¹ which has a larger head at its top than is presented at its lower
end. This plunger D' is designed to be forced downward by steam pressure, as
hereinafter described, but is retracted in any suitable manner, as, for instance, by a
spring D² although ordinarily the vacuum produced in the pipe C, as steam is
alternately cut off, will suffice to lift this plunger back to its starting point. _ E is
a regulating valve for "governing the flow of the oil from the reservoir
F is a
valve which shuts with pressure from the steam chest.
The operation of the device is as follows
The pipe C, since it leads from a steam port between the steam chest and the
cylinder, takes steam alternately as the cut off valve moves back and forth.
When steam enters this pipe it passes into the chamber D, in the lubricator, and
exerts a sudden pressure upon the upper large end of the plunger D. This forces the
plunger down and drives a quantity of the oil out past the valve E, and thence to
the steam chest. As soon, however, as the cut off valve has cut off the steam from
the pipe C, the spring D², or the vacuum within the pipe C causes the plunger D¹
to return to its normal or upper position. As it rescats, the pressure of steam from
the steam chest, causes the valve F, to close and oil is sucked into the plunger
cylinder past the valve E to be again driven down to the steam chest, as the steam
again enters the pipe C. In this way it is apparent that steam does not enter the
body of the lubricator yet is always present in the pipe C, the plunger cylinder,
and in the supporting stem, sufficient to keep the contents warm and fluid. Con-
densed water cannot collect within the lubricator and it is not necessary that it
should be kept tightly closed. In fact it should be slightly vented in order to
prevent the formation of a resisting vacuum within the reservoir.
This lubricator it is apparent, pumps by positive action, a regulated quantity of
oil into the steam chest at each stroke of the piston but when the piston is at rest
the oil ceases to feed.
The reservoir may be provided with the usual gauge glass to indicate the height
of oil but it is preferable to locate simply a flat or circular disc of glass G in the
side of the reservoir and a corresponding glass face G₁, opposite to the latter in
the wall of the plunger cylinder opposite the valve F so that the engineer may at
all times see that oil is properly feeding.
It is apparent that instead of leading the pipe C into a steam port it may be
led into any other similar chamber where it can receive alternate pressures of
steam.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said William Phillips Thompson in the Great Seal Patent Office
on the 10th July 1883.
WILLIAM PHILLIPS THOMPSON Fel. Inst. P.A. of the Liverpool and London
Agency for Foreign Patent Solicitors, 6 Lord Street, Liverpool, in the county of
Lancaster, Civil Engineer. IMPROVEMENTS IN APPARATUS FOR LUBRICATING
STEAM CYLINDERS OR OTHER DEVICES WHERE THE LUBRICANT IS ADMITTED AGAINST
E
A RESISTING PRESSURE" A communication from Charles. H. Parshall, a person
resident at Detroit, Michigan, United States of America
This invention consists in the combinations of devices and appliances hereinafter
specified, and more particularly pointed out in the claims.
In the drawings is presented a view in section and elevation of a lubricator
embodying the invention.
.
It is the object of this Invention to furnish a reliable lubricator for steam
cylinders and other devices in which the lubricant has to be admitted against a
resisting pressure; to furnish at the same time a device which shall operato
without the maintenance of "that pressure within the body of the lubricator; and
finally, one which shall operate by steam or other pressure without accumulations
of condensed water within the reservoir.
To this end, A represents the body of the oil reservoir. B is the stem whereby
it is connected with the steam chest. C is a pipe connecting the steam port
between the steam chest and cylinder. This pipe C, connects with the plunger
cylinder D, within the body of the lubricator.. Within this plunger cylinder D is
a plunger D', which has a larger head at its top than is presented at its lower end.
This plunger D¹ is designed to be forced downward by steam pressure, as herein-
after described,--but is retracted in any suitable manner, as, for instance, by a
spring D, although ordinarily the vacuum produced in the pipe C, as steam is
alternately cut off, will suffice to lift this plunger back to its starting point. E is
a regulating valve for governing the flow of the oil from the reservoir.
F is a
valve which shuts with pressure from the steam chest.
The operation of the device is as follows.
The pipe C, since it leads from a steam port between the steam chest and the
cylinder, takes steam alternately as the cut off valve moves back and forth.
When steam enters this pipe it passes into the chainber D in the lubricator, and
exerts a sudden pressure upon the upper large end of the plunger D'.
This forces the plunger down and drives a quantity of oil out past the valve E,
and thence to the steam chest. As soon however, as the cut off valve has cut off
the steain from the pipe C, the spring D³, or the vacuum within the pipe C causes
the plunger D¹ to return to its normal or upper position. As it rescats, the pressure
of steam from the steam chest, causes the valve F, to close, and oil is sucked into
the plunger cylinder past the valve E, to be again driven down to the steam chest
as the steam again enters the pipe C. In this way it is apparent that steam does
not enter the body of the lubricator yet is always present in the pipe C, the
plunger cylinder, and in the supporting stein, sufficient to keep the contents warm
and fluid. Condensed water cannot collect within the lubricator and it is not
necessary that it should be kept tightly closed. In fact it should be slightly
vented in order to prevent the formation of a resisting vacuum within the
reservoir.
This lubricator it is apparent, pumps by positive action, a regulated quantity of
oil into the steam chest at each stroke of the piston; but when the piston is at
rest the oil conses to feed.

page_text: The reservoir may be provided with the usual gauge glass to indicate the height
of oil, but it is preferable to locate simply a flat or circular disk of glass G, in the
side of the reservoir and a corresponding glass face G', opposite to the latter in the
wall of the plunger cylinder opposite the valve F, so that the engineer may at all
times see that oil is properly feeding.
It is apparent that instead of leading the pipe C into a steam port, it may be
led into any other similar chamber where it can receivo alternate pressures of
steam.
Having now described this invention as communicated to me I wish it to be
understood that what I desire to protect under the Letters Patent is
1. A lubricator for steam cylinders consisting of a stem by which the lubricator
may be connected with a steam chest and through which the oil is fed, a plunger
cylinder and plunger located within the reservoir, an orifice beneath the plunger
for the inflow of oil, and a steam pipo or conduit leading from the plunger cylinder
above the cylinder to a steam port, substantially as described.
2nd. In a lubricator, a plunger cylinder and plunger for forcing oil to the parts
to be lubricated, and a steam pipe connecting said plunger cylinder with a steam
port or other alternating source of steam for operating the plunger, substantially
as described.
3rd. The combination with the reservoir and the interior plunger cylinder, of a
valve for regulating the flow of oil into the cavity beneath the plunger, substantially
ns described.
4th. The combination with the reservoir and interior plunger cylinder, of a glass
disk or plate located in the wall of the reservoir, and a similar plate located in the
wall of the plunger cylinder, substantially as described.
5th The combination with the reservoir, the inner plunger cylinder, its plunger,
and the steam pipe C, of a valve E, adapted to close with pressure up through the
stem, and with or without a regulating valve F, substantially as described.
In witness whereof I the said William Phillips Thompson have hereunto sot
my hand and seal this sixth day of July in the year of our Lord one thousand
eight hundred and eighty three.
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