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

page_text: Date of Application, 16th Nov., 1893
Complete Specification Left, 15th Aug., 1894-Accepted, 15th Sept., 1894
PROVISIONAL SPECIFICATION.
Improvements in and relating to Sight-feed Lubricators.
I, JOHN GALILEO BARCLAY, of Argyle House, Kilmarnock, Ayrshire, Engineer,
do hereby declare the nature of my invention to be as follows:-
This invention has reference to and comprises a new or improved construction
or arrangement and combination of the parts of sight-feed lubricators, specially
applicable for automatically supplying oil to and intermittently lubricating the
cylinders of double and single acting gas engines during the expansion of the
explosive gases within these; but also applicable for lubricating the bearings or
working parts of engines or other machinery, and which will be more simple and
efficient than such lubricators have been as heretofore constructed.
The improved lubricator under one arrangement suitable for being applied to
the cylinder of a gas engine would consist of a vertical hollow vessel or cistern
for containing the lubricating oil preferably of cylindrical shape screwed or
otherwise secured and carried on the upper end of a vertical hollow column or
standard branch secured over the top of the cylinder of the gas engine. Two
vertical parallel channels or tubes would be formed in or fitted within the centre
of the oil cistern, and both communicate at their lower ends with the hollow branch
column leading to engine cylinder. These tubes would extend to near the top
of cistern, and one of these would be open to cistern and be fitted with a pressure
lift valve; and a cover would be screwed or fitted on the top of cistern and have a
screwed hand operated vertical spindle passing through a stuffing box in same so
as by the distance of its lower end from valve to regulate the distance of lift or
opening of the latter, or screw it down and shut said valve on its seat when filling
the cistern with oil or removing a plug fitted in a cup opening in the cover of
cistern. The other channel or tube would be closed to the oil cistern (although it
may be fitted with a removable screw plug) and would be formed of a kneed shape
to bend at right angles at top and communicate out through a branch fitted at the
one side of cistern. A branch opening would also be formed at and communicating
with the lower part of oil cistern, and hollow coupling branches or overhung
brackets with kneed channels would be screwed or connected to each of the
aforesaid branches; and these coupling branches would have a glass tube or gauge
fitted between them, the ends of glass tube being secured fluid-tight in the branches
by stuffing boxes or packing and screwed nuts. The upper coupling branch would.
have a screwed cover on top for the insertion of the glass tube down through the
stuffing boxes, while the bottom end of the lower coupling branch would preferably
be formed solid; and a horizontal screwed hand operated regulating spindle would
work through a stuffing box in this lower branch, and have its inner conoidal or
pointed end fitted within an aperture opposite the lower outlet from oil cistern so
as to regulate the volume or quantity of oil feed which shall pass from cistern;
and a vertical conoidal or tapering nozzle would be screwed or fitted at the upper
outlet end of lower hollow coupling branch for leading the oil into glass sight-feed
tube. The glass tube would be filled or partially filled with water or other liquid,
and the cistern would likewise be filled with the lubricating oil to a corresponding
level, or to the top.
The action of the lubricator would be as follows:-When an explosion of gas
takes place in the cylinder of engine, the pressure of the explosive mixture will
pass up the vertical branch column secured on cylinder and through the vertical
channels or tubes within oil cistern and lift the valve fitted on one of these and
press on the top surface of oil in cistern of lubricator. As the explosive mixture

page_text: expands within the cylinder of engine and consequently lowers in pressure within
the central tubes, the pressure of gas accumulated on the top of oil within the
vessel or cistern will close the valve on top of tube, and force the oil through the
outlet orifice at lower end of cistern, from whence it will pass through the outlet
nozzle and bubble up through or float to the surface of water in glass tube, and
then pass through the upper branch and knee bend to the other vertical tube
within cistern and flow down it and through the vertical bollow column to lubricate
the cylinder of engine; and this supply of oil and lubricating action will go on
automatically and intermittently at each explosion of gas within the cylinder
of engine. With the lubricator thus placed on the barrel of the cylinder the oil
will pass down the hollow column and so get into the piston; and the pressure on
the surface of oil may be got at the first explosion of the gas, or after the piston
passes the point of cylinder where the lubricator is placed.
A supply of oil may be taken from the cistern of this lubricator to lubricate
the bearings or other working parts of the engine, or of any adjacent machinery,
such as by coupling a branch and pipe fitted with a regulating valve at the upper
junction branch of the glass indicating tube; or by fitting a coupling branch and
valve near the lower end of cistern on the opposite side to that of the branch
leading to glass tube.
Dated 15th November 1893..
W. R. M. THOMSON & Co.,
96, Buchanan Street, Glasgow, Agents.
COMPLETE SPECIFICATION.
Improvements in and relating to Sight-feed Lubricators.
I, JOHN GALILEO BARCLAY, of Argyle House, Kilmarnock, Ayrshire,
Engineer, do hereby declare the nature of my invention and in what manner the
same is to be performed to be particularly described and ascertained in and by the
following statement in writing that is to say :-
This invention has reference to and comprises a new or improved construction, or
arrangement and combination of the parts of sight-feed lubricators, specially
applicable for automatically supplying oil to and intermittently lubricating the
cylinders of double and single acting gas engines during the expansion of the
explosive gases within these; but also applicable for lubricating the bearings or
working parts of engines or other machinery, and which will be more simple and
efficient than such lubricators have been as heretofore constructed.
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
Figure 1 is a sectional elevation of a sight feed lubricator as constructed in
accordance with my improvements and shown as fitted over the cylinder of a gas
engine.
Figure 2 is a plan view and Figure 3 an external elevation both corresponding
to Figure 1.
Referring to these drawings; the improved lubricator as constructed for being
applied to the cylinder A of a gas engine as shown in these drawings would consist
of a vertical hollow vessel or cistern B for containing the lubricating oil, preferably
of cylindrical shape screwed or otherwise secured and carried on the upper end of
a vertical hollow column or standard branch B' secured over the orifice A' in the
top of the cylinder A. of a gas engine. Two vertical parallel channels or tubes b, b'
would be formed in or fitted within the centre of the oil cistern B and both
communicate at their lower ends with the hollow branch column B' leading t
engine cylinder A. These tubes 6' would extend to near the top of cistern B and

page_text: one of those b would be open to cistern B and be fitted with a pressure lift valve c;
and a cover B³ would be screwed or fitted on the top of cistern B and have a
screwed hand operated vertical spindle passing through a stuffing box B³ in same
so as by the distance of its lower end from valve c to regulate the distance of lift or
opening of the latter, or screw it down and shut said valve on its seat when filling
the cistern with oil on removing a plug B fitted in a cup opening in the cover B
of cistern. The other channel or tube 61 would. be closed to the oil cistern B,
although it may be fitted with a removable screw plug c², and would be formed of a
kneed shape to bend at right angles to top and communicate out through a
branch fitted at the one side of cistern B.
A branch opening C would also be formed at and communicating with the lower
part of oil cistern B and hollow coupling branches or overhung brackets C¹ C³ with
kneed channels would be screwed or connected to each of the aforesaid branches C &*
and these coupling branches would have a glass tube or gauge D fitted between
them, the ends of glass tube being secured fluid-tight in the branches by stuffing
boxes or packing and screwed nuts at D¹ D'.
The upper coupling brauch C2 would have a screwed cover (3 on top for the
insertion of the glass tube D down through the stuffing boxes while the bottom
end C" of the lower coupling branch C would preferably be formed solid; and a
horizontal screwed hand operated regulating spindle d would work through a
stuffing box d in this lower branch C¹, and have its inner conoidal or pointed end
fitted within an aperture c" opposite the lower outlet C from oil cistern B so as to
regulate the volume or quantity of oil feed which shail pass from cistern B and a
vertical conoidal or tapering nozzle d would be screwed or fitted at the upper
outlet end of lower hollow coupling branch C¹ for leading the oil into glass sight
feed tube D. The glass tube D would be filled or partially filled with water or
other liquid, and the cistern would likewise be filled with the lubricating oil to a
corresponding level or to the top.
с
gas
The action of the lubricator would be as follows:-When an explosion of
takes place in the cylinder A of engine, the pressure of the explosive mixture will
pass through the orifice A' and up the vertical branch column B₁ secured on
cylinder A and through the vertical channels or tubes within oil cistern B and
lift the valve c fitted on one of these and press on the top surface of oil in cistern B of
lubricator. As the explosive mixture expands within the cylinder A of engine and
consequently lowers in pressure within the central tubes the pressure of gas
accumulated on the top of oil within the vessel or cistern B will close the valve o
on top of tube 6 and force the oil through the outlet orifice C at lower end of
cistern B from whence it will pass through the outlet nozzle d² and bubble up
through or float to the surface of water in glass tube D and then pass through the
upper branch C² and knee bend 23 to the other vertical tube within cistern B
and flow down it and through the vertical hollow column B' and orifice A' to
lubricate the cylinder A of engine; and this supply of oil and lubricating action
will go on automatically and intermittently at each explosion of gas within the
cylinder of engine.
With the lubricator thus placed on the barrel of the cylinder the oil will pass
down the hollow column B₁ and orifice A¹ and so get into the piston and the
pressure on the surface of oil may be got at the first explosion of the gas or after
the piston passes the point of cylinder where the lubricator is placed.
A supply of oil may be taken from the cistern B of this lubricator to lubricate
the bearings or other working parts of the engine or of any adjacent machinery,
such as by coupling a branch and pipe fitted with a regulating valve such as E at
the upper junction C branch of the glass indicating tube D or by fitting a coupling
branch and valve near the lower end of cistern B on the opposite side to that of
the branch leading to glass tube.
Or one or more acditional glass tubes with their arrangements for dropping oil
nay be fixed to the side of the oil cistern without requiring any additional internal
channels and the feed be taken by a small tube from the top knee branch of the

page_text: additional glass tube to any part such as in the case of two engines being coupled
together one lubricator can oil both engines or more if so desired.
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.
First. The construction or arrangement and combination of the parts of a sight
feed lubricator, substantially as herein described in reference to and shown in the
accompanying drawings.
Second. In sight feed lubricators the forming or fitting of internal duplex
channels or tubes in the oil cistern and with branches from the top of one of these
tubes and the lower part of cistern to the glass tube substantially as and for the
purposes herein described in reference to and by way of application shown in the
accompanying drawings.
Dated the 14th August 1894.
W. R. M. THOMSON & Co.,
96, Buchanan Street, Glasgow, Agents.