IMPROVEMENTS IN SIGHT-FEED LUBRICATORS
Year: 1885

page_text: We, JOHN HAY, of 318 Paisley Road, Glasgow, in the County of Lanark, North
Britain, Engineer, and ROBERT WYLIE, of 20 and 38 West Street, Glasgow
aforesaid, Engineer, do hereby declare the nature of our said invention for
"IMPROVEMENTS IN SIGHT-FEED LUBRICATORS," to be as follows, that is to say:-
Our said Invention has for its object to improve the construction and action of
sight-feed lubricators; and our improved lubricator is easily adjustable for different
rates of supply and is suitable for various kinds of lubricating oil.
Our improved lubricator is designed for supplying oil to the cylinders and other
parts of steam engines, and is constructed so that the rate at which the lubricant
is being fed can always be seen, whilst the action being dependent on the con-
densation of steam takes place only whilst the steam is operating in the engine so
that no waste takes place when the steam is shut off.
The apparatus consists of a vertical cylindrical vessel made in a single casting
and divided internally into upper and lower compartments by a horizontal partition
or diaphragm. At the top of the vessel a nozzle is formed for connecting a pipe to
admit the steam to the upper compartment, and there is also a nozzle fitted with a
screw plug to allow of the upper compartment being at any time filled with water
without disconnecting the steam pipe. At the bottom of the vessel there is a
nozzle for the attachment of a waste pipe and stopcock for draining off the
contents of the lower compartment when required. The lower compartment is
provided with a stopcock and cup or funnel through which the lubricant can be
filled into it; and the lubricant passes from the compartment by an outlet at the
side and close to the top, being made to pass out by the pressure of water from
the upper compartment this water passing from the upper compartment down
through a passage made for the purpose to the bottom of the lower compartment.
A screw stop valve is fitted to the passage by which the water passes from the
upper to the lower compartment for the purpose of closing that passage when the
lower compartment is being emptied. The outlet passage by which the lubricant
proceeds from the lower compartment communicates with the bottom of a glass
tube the top of which communicates with a pipe or passage leading to the steam
pipe or other part of the engine. This pipe or passage is fitted with a stopcock
and a screw plug is fitted directly over the upper end of the glass tube for filling
IU 031

page_text: that tube with water. A hollow conical nozzle with a small orifice at its upper
pointed end is fixed at the bottom of the glass tube and a screw valve is fitted to
the bottom of the conical nozzle for regulating the rate of feed.
To make the apparatus ready for action the lubricant is filled into the lower
compartment of the vessel and water is filled into the upper compartment and also
into the glass tube; the filling inlets are then closed, and the valve in the passage
between the upper and lower compartments opened. Then when steam is let on to
the engine the water by the pressure it has due to its height or head in the upper
compartment, enters the lower compartment, and forces the lubricant up and out
from that compartment; and the lubricant ascends drop by drop from the conical
nozzle up through the water in the glass tube, and passes onwards to the steam
pipe and engine. As the water descends from the upper compartment its head is
maintained by the condensation of steam which enters that compartment; and the
action proceeds with a uniform rate of feed until the lubricant contained in the
lower compartment has been all used.
EDMUND HUNT,
Applicants' Agent.

page_text: We, JOHN HAY of Glasgow, in the County of Lanark, North Britain, Engineer,
and ROBERT WYLIE of Glasgow, aforesaid, Engineer, do hereby declare the nature
of our invention for IMPROVEMENTS IN SIGHT-FEED LUBRICATORS and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement :—
The Lubricator as constructed according to our said Invention is illustrated by
the accompanying Drawing which is a vertical section through the centre thereof.
The oil chamber a and condenser 6 divided by partition are cast in one, a water
inlet passage c being bored up a swelled part of the side of chamber a which is
afterwards plugged up at bottom by piece d. At the bottom of passage c is fitted
an ordinary valve e for closing the port el. The condenser is provided at the top
with a plug f for charging the condenser with cold water and the pipe g which is
for connecting in the most convenient way to the steam pipe. At the top of the
oil chamber is fitted a filler i as represented by dotted lines, consisting of a bent
tube into mouth of which screws oiltight a plug i. Into the bottom of chamber a
is fitted the drain-off valve k and at the top the regulating valve case provided
with an ordinary valve an oil outlet passage m and nozzle n being provided as
shown.
I
In lieu of the ordinary mode of fitting in the glass tube p of our sight-feed
Lubricators, we have devised a simple and efficient mode of effecting same and
dispensing with nuts. In this mode the top glass stuffing case o which is fixed into
the side of condenser 6 has bored therein a vertical hole through which is passed
the tube p which seats itself in lower case 7 on a stuffing ring or washer r of
india-rubber or other suitable material. On the top of said tube p presses another
such stuffing ring on top of which again, bears the metal washer 8, both said.
ring and washer s being fitted on and encircling the lower part of the hollow
plug t which is screwed into top of vertical hole in case o a lead washer u being
interposed all as shown. The glass tube p is charged with water by taking out
said plug t, through the side of which a hole is bored to communicate with oil
outlet branch w on which is screwed an ordinary stop valve v which is connected
in the most convenient manner so as to communicate with the steam pipe into
which it is desired to convey the oil.
The Lubricator is or may be fixed by a bracket (not shown) or otherwise in
any well known way to any convenient place on or near the Engine and works as
follows.
The pipes g and w communicate with the steam pipe. The condenser b and
glass tube p being charged with clean water and chamber a with oil, when the
valves e,
and are opened, the water desends the passage c and flows into bottom
of chamber a expelling the oil through passage m nozzle n and valve v into steam
pipe, the feed being regulated as desired by valve l.

page_text: Having now particularly described and ascertained the nature of our said
Invention and in what manner the same is to be performed we declare that
what we claim is
1st The combination and construction of the condenser and oil chamber in one
casting, substantially as described and shown.
2ndly The particular mode of, and construction of parts for, stuffing the glass
tube p as shown and described.
3rd Providing and constructing the passage c as described and shown.