Improvements in and relating to Sight-feed Lubricators.
Year: 1893

page_text: Date of Application, 7th Sept.. 1893
Complete Specification Left, 4th June, 1894-Accepted, 7th July, 1894
PROVISIONAL SPECIFICATION.
Improvements in and relating to Sight-feed Lubricators.
I, ALEXANDER PATERSON of the Great Indian Peninsular Railway, Parel,
Bombay, India, Engineer, do hereby declare the nature of my invention to be as
follows:-
This invention has reference to improvements in that class of sight-feed
lubricators in which the oil is held in a central oil cup or vessel, and in which
steam pressure is led by two, three, or more branches, one leading to force the oil
from oil cup through downtake tubes, and radial, and uptake coupled branch tubes
to radial branches at top, where the steam, from the other branch or branches, after
passing through a reducing valve meets the oil, and forces it passed a regulating
valve to the steam chest, and cylinder of the engine to be lubricated.
Hertofore a series defect in these lubricators has been that the heat of the
steam in these branches is communicated to the oil cup, and considerably raises the
temperature of the oil before it enters the steam chest or cylinder. Under my
present improvements I overcome this defect by separating, and isolating these
steam branches from the central oil cup. This is effected under one arrangement
by fitting between each of these upper radial branch connections, and the central
oil cup, an intermediate bracket frame or support which shall be screwed, or
coupled to each, and formed of perforated or open metal work, or other suitable
non-heat conducting, or insulating material. The steam would be led by a pipe
from the boiler to a multiplex branch chamber mounted beyond, and carried by
one of the insulators; while segmental or curved annular branches would lead it
from this chamber to the radial oil, and steam combining, and forcing branches
carried on the other insulators. A portion of the steam would also be led from
the multiplex ported chamber by a kneed branch pipe to the lower part of oil cup,
so as to force the oil through the downtake tubes, and oil ejection branches to the
oil and steam combining branch chambers, from whence the oil would be forced by
the jets of steam from the segmental tubes passed the regulating valves to the
steam chests, and cylinders of the engines to be lubricated.
Where only one radial branch is used in the lubricator the steam pipe would be
taken direct to it, and the branch pipe leading down to central oil cup coupled
to this.
Dated 6th Cantambo 1002
W. R. M. THOMSON & Co.,
96, Buchanan Street, Glasgow, Agents.
COMPLETE SPECIFICATION.
Improvements in and relating to Sight-feed Lubricators.
I, ALEXANDER PATERSON, of the Great Indian Peninsular Railway, Parel,
Bombay, India Engineer, do hereby declare the nature of my invention, and in
what manner the same is to be performed to be particularly described and ascer-
tained in and by the following statement in writing, that is to say :-
This invention has reference to improvements in sight-feed lubricators.
And in order that my said invention and the manner of performing or carrying
the same into effect or practice may be properly understood I have hereunto
appended an explanatory sheet of drawings in which the same reference letters are
used to indicate corresponding parts in all the figures where shown.
Figure 1 is an elevation half in section, and Figure 2 a plan view of a sight-feed

page_text: lubricator as formed with two radial branches and constructed in accordance with
one arrangement of my improvements. While
Figures 3 and 4 are an elevation and plan view respectively showing my
improvements as applied to a lubricator in which only one radial branch is used.
And
Figure 5 is a detached detail view hereinafter referred to.
0
Referring to these drawings, my improvements relate to that class of sight-feed
lubricators in which the oil is held in a central oil cup or vessel A, and in which
steam pressure is led by two, three, or more branches, one A' leading the steam
pressure and condensed water to force the oil from oil cup A, through downtake
tubes a and radial, and uptake coupled branch tubes a', a fitted with regulating
valves A to radial branches 6 at top, wher the steam from the other branch or
branches b', after passing through a reducing valve B meets the oil, and forces it
past a regulating valve B¹ through the orifice to the steam chest, and cylinder
of the engine to be lubricated.
Heretofore a serious defect in these lubricators has been that the heat of the
steam in these branches is communicated to the oil cup A, and considerably raises
the temperature of the oil before it enters the steam chest or cylinder. Under my
present improvements I overcome this defect by separating, and isolating these
steam branches from the central oil cup. This is effected under one arrangement,
as shown in Figures and 2, by fitting between each of these upper radial branch
connections and the central oil cup A, an intermediate bracket frame or
support C which shall be screwed, or coupled to each, and formed of perforated or
open metal work C, as shown in Figures 1 to 4, or of other suitable non-heat
conducting, or insulating material, the coupling bracket being shown in detached
view Figure 5 as formed of a central disc o of asbestos bolted between round or
oval flanges C. The steam would be led by a pipe D', Figure 2, from the boiler
to a multiplex branch chamber D mounted beyond, and carried by one of the
insulators C Figure 2; while segmental or curved annular branches &¹ would lead
it from this chamber D to the radial oil, and steam combining, and forcing
branches b carried on the other insulators C, C. A portion of the steam would
also be led from the multiplex ported chamber D by a kneed branch pipe A¹ to the
lower part of oil cup A, so as to force the oil through the downtake tube a and
oil ejection branches a, a, to the oil and steam combining branch chamber b from
whence the oil would be forced by the jets of steam from the segmental tubes b²
past the regulating valves B₁ to the steam chests, and cylinders of the engines to be
fubricated.
Where only one radial branch 6 is used in the lubricator, as shown in Figures 3
and 4 the steam pipe D' would be taken and coupled direct to it, and the branch
pipe A leading down to central oil cup A coupled to this.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:
First. In sight-feed lubricators the separating or insulating of the radial steam
branch or branches from the central oil vessel by an intermediate bracket frame or
support connected to each and formed of perforated or open metal work or of
other suitable non-heat conducting or insulating material, substantially as set
forth.
Second. The arrangements shown and described in reference to the drawings
for insulating the radial steam branches from the central oil vessel of the sight feed
lubricators.
31
D 1 T
2002
W. R. M. THOMSON & Co.,
96, Buchanan Street, Glasgow, Agents.