Year: 1887

page_text: Date of Application, 17th Mar., 1887
Complete Left, 17th Dec., 1887
Complete Accepted, 17th Mar., 1888
I, ROBERT JOHN ELWELL, carrying on business under the style or firm of Henry
Elwell, of 95, Charlotte Street, Birmingham, in the County of Warwick, Export
Merchant, do hereby declare the nature of this invention to be as follows:-
This invention has reference to lubricators in which lubricant is caused to drop
In such a
within a chamber through the glass wall of which the drops can be seen.
lubricator according to this invention there is an oil vossel supplied at the bottom with
steam or water direct from a boiler in such a manner that the lubricator can be caused
at all times to supply lubricant either to a steam chest, cylinder, or other part to be
lubricated. This is effected in the following manner-Steam or water enters the oil
vessel through an inverted rose or tubular device projecting upward within the said
vessel, closed at its upper end, and provided with downwardly inclined holes or passages
through which the steam or water flows into the oil vessel, so as to displace oil there-
from which passes to a regulating valve or combined regulating screw or plug and
nozzle or cone (which can be constructed in different forms) down the nozzle or cone
whence the oil drops through a glass tube and is fed by gravitation to the parts to be
lubricated through a suitable nipple and pipe or through a diverting or distributing
cock with branch pipes thereby effectively lubricating the slide valves, pistons, or
other parts as may be required.
The construction and arrangement of the combined regulating screw and nozzle or
cone are such as to admit of ready removal of the glass tube.

page_text: In some cases the rose or device in the oil vessel hereinabove referred to is con-
structed with a non-return ball valve; and the oil vessel is furnished with a drain
cock.
The pressure for working the lubricator may be derived from the main steam pipe,
steam chest, or cylinders of a locomotive, and in such a case the system of stop and
drain cock and non-return valve above referred to will be used to prevent the with-
drawal of lubricant while running with the regulator shut. The filling opening of
the oil vessel is of a form gradually diminishing in diameter as it proceeds inward, and
is closed by a conoidal screw plug-This arrangement is to facilitate the filling and
prevent leakage.
In some cases an oil vessel such as referred to above may be provided with two or
more regulating valves or combined regulating screws and nozzles or cones and with
two or more glass tubes fixed between the oil vessel and supporting bracket or brackets
which will protect the said tubes from accidental breakage.
Visible drop lubricators according to this invention can be made more simple and
effective than others heretofore in use, and by their use pistons and slide valves may
be lubricated at all times which is advantageous especially in locomotive engines. By
means of the inverted rose the pressure is diverted so that the lubricator may be
started at once, it also admits of dispensing with internal piping in the oil vessel, and
with condensing piping outside of the lubricator. By the use of two or more glass
tubes fixed between the oil vessel and supporting bracket or brackets, rigidity is
obtained to enable the apparatus to withstand shocks such as lubricators are liable to
on a locomotive-more than one part may be lubricated at a time without the use of a
diverting cock and by closing the pressure cock on the boiler, waste of oil whilst the
engine is at rest in sidings or running sheds may be entirely obviated.
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C.,
Agent for the Applicant.

page_text: Improvements in Lubricators.
1, ROBERT JOHN ELWELL, carrying on business under the style or Firm of Henry
Elwell, of 95, Charlotte Street, Birmingham, in the County of Warwick, Export
Merchant, 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 in which lubricant is caused to drop
within a chamber through the glass wall of which the drops can be seen. In such a
lubricator according to this Invention there is an oil vessel supplied at the bottom with
steam or water direct from a boiler in such a manner that the lubricator can be caused
at all times to supply lubricant either to a steam chest, cylinder, or other part to be
lubricated. This is effected in the following manner-Steam or water enters the oil
vessel through an inverted rose or tubular device projecting upward within the said
vessel, closed at its upper end, and provided with downwardly inclined holes or
passages through which the steam or water flows into the oil vessel so as to displace
oil therefrom which passes to a regulating valve or combined regulating screw or plug
and nozzle or cone (which can be constructed in different forms) down the nozzle or
cone whence the oil drops through a glass tube and is fed by gravitation to the parts
to be lubricated through a suitable nipple and pipe or through a diverting or dis-
tributing cock with branch pipes thereby effectively lubricating the slide valves,
pistons, or other parts as may be required.
The construction and arrangement of the combined regulating screw and nozzle or
cone are such as to admit of ready removal of the glass tube.
In some cases the rose or device in the oil vessel hereinabove referred to is con-
structed with a non-return ball valve; and the oil vessel is furnished with a drain
cock.
The pressure for working the lubricator may be derived from the main steam pipe,
steam chest, or cylinders of a locomotive, and in such a case the system of stop and
drain cock and non-return valve above referred to will be used to prevent the with-
drawal of lubricant while running with the regulator shut--The filling opening of
the oil vessel is of a form gradually diminishing in diameter as it proceeds inward,
and is closed by a conoidal screw plug. This arrangement is to facilitate the filling,
and prevent leakage.
In some cases an oil vessel such as referred to above may be provided with two or
more regulating valves or combined regulating screws and nozzles or cones and with
two or more glass tubes fixed between the oil vessel and supporting bracket or brackets
which will protect the said tubes from accidental breakage.
Visible drop lubricators according to this Invention can be made more simple and
effective than others heretofore in use, and by their use piston and slide valves may be
lubricated at all times which is advantageous especially in locomotive engines. By

page_text: arrangement the glass tubes are both placed between supporting brackets and the oil
vessel, which arrangement will tend to protect them from accidental breakage, and at
the same time such rigidity is obtained as will enable the apparatus to withstand
such shocks as lubricators are liable to, as for example when they are used on a
locomotive.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed I declare that what I claim
as my invention is the following improvements in visible drop lubricators.
1. Direct communication with any part of the boilers enabling the lubricator to be
worked at all times.
2. The inverted rose and non return ball entry.
3. The use of a distributing cock enabling the lubricant to be diverted to more than
one place.
4. The use of a tapered screwed metal plug for closing the filling opening.
5. The use of a removable combined regulating screw and cone.
6. I also claim my improved visible drop lubricators substantially as hereinabove
described with reference respectively to Figs. 1 to 4 and Figs. 5 and 6 of the
drawings annexed.
Dated the 15th day of December 1887.