IMPROVEMENTS IN "LUBRICATORS
Year: 1884

page_text: PROVISIONAL SPECIFICATION,
Wo ROBERT BAIRD of St Vincent Street, Glasgow, in the County of Lanark,
North Britain and CEDRIC RANDAL BOULT of Imperial Chambers Dale Street
Liverpool, Oil Merchants do hereby declare the nature of the said invention for
IMPROVEMENTS IN "LUBRICATORS" to be as follows:-
This is of that class of lubricators known as "Sight Feed Lubricators" and is
specially designed for use upon locomotive engines, though it may be applied to
other engines.
The cistern or cup carries upon it a vessel supplied with steam which condenses
therein and extending from this vessel to near the bottom of the cup is a pipe
witli a valve seat at top and a valve preferably with a long stem extending some
distance down the tube. Above, the valve has a stem terminating in a suitable
head or weight; the cup may be charged through a suitable filler and valve or
tap on the cup or branch from it, and there is a closable outlet at or near the
bottom.
A branch or outlet from the upper part of the cup has a nozzle which is inside
the upper end of the glass tube, the bottom of which is secured in another
branch which leads into a main chamber bencath the cup. This chamber con-
municates with the steam pipe or equivalent, the opening being closed by a valve.
A branch pipe from this chamber connects with the condensing vessel above
referred to. The action is as follows:-The cup being filled with the lubricant and
the valve in the lower chamber being opened, the steam enters the chamber and
passes by the branch pipe to the condensing vessel where it becomes condensed.
The shaking of the engine causes the valve to oscillate or vibrate, so that water
passes the valve and enters the cup by the central tube below the lubricant forcing
some of it out by the branch-the valve therein being open, whence it drops from
the nozzle through the glass, and so to the lower chamber, out of which it flows
to wherever it is required.

page_text: COMPLETE SPECIFICATION.
We ROBERT BAIRD, St. Vincent Street, Glasgow, Lanarkshire and CEDRIC
RANDAL BOULT, Imperial Chambers, Dale Street Liverpool, Oil Merchants, do
hereby declare the nature of the said invention for "IMPROVEMENTS IN
LUBRICATORS" and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:—
This is of that class. of lubricators known as "Sight Feed Lubricators" and is
specially designed for use upon Locomotive engines though it may be applied to
other engines.
The cistern or cup carries upon it a vessel supplied with steam which condonses
therein and extending from this vessel. to near the bottom of the cup is a pipo:
with a valve seat at top and a valve preferably with a long stem extending some
distance down the tube Above, the valve has a stem terminating in a suitable
head or weight the cup may be charged through a suitable filler and valve or
tap in the cup or a branch from it and there is a closable outlet at or near the
bottom.
A branch or outlet from the upper part of the cup has a nozzle which is inside
the upper end of the glass tube, the bottom of which is secured in another branch
which leads into a main chamber beneath the cup, this chamber communicates
with the steam pipe or equivalent the opening being closed by a valve-A branch
pipe from this chamber connects with the condensing vessel above referred to--The :
action is as follows The cup being filled with the lubricant and the valve in.the
lower chamber being opened the steam enters the chamber and passes by the
branch pipe to the condensing vessel where it becomes condensed.
The shaking of the engine causes the valve to oscilate or vibrate so that
water passes the valve and enters the cup by the central tube below the lubricant
forcing some of it out by the branch-the valve therein being open-whence it
drops from the nozzle through the glass and so to the lower chamber out of which
it flows to wherever it is required.
In the accompanying drawings Figure 1 is a sectional elevation of the complete
cup and Figure 2 is an elevation taken at right angles to Figure 1 the lower i
portion only being in section.
The cup or cistern A may be filled with the lubricant through "the pipe or
channel B which can be closed by the valve C the lubricants being poured into the
D and the valve C closed when the cistern A is filled.
cup
The chamber E contains the valve E' which has a long stem and weight E' so
that it readily shakes about when the machinery is in motion Above chamber E
is the condensor F supplied with steam by the pipe F¹ which as will be seen by
reference to Figure 2 communicates with the entrance chamber G.
The pipe A is secured in the top of A and extends to the bottom where it enters
a recess A³ but does not fit tight leaving an annular recess all round the pipe 4
as shown in Figure 1 Or the pipe A¹ may be cut short so as to be clear of
the bottom of A but must in either case be so arranged that communication is

page_text: established between the open end of pipe A¹ and the interior of cup A : From the
bottom of the cup A extends the channel H which may be closed by the valve H
and serves to draw off the contents of cup A.
Near the top of A is the opening I which may be closed by the valve I and
opens into the chamber I communicating with which is the air tap or valve K
which being placed at or near the highest part of the apparatus is useful for letting
out the air while oil is being poured into A or at other times should air have got
in by any means. The valve K can be used with valve l' open when the interior
of the cup A to other portions of the apparatus are in direct communication.with
the atmosphere, or it may be used with valve I closed when it communicates only
with the other portions.
The nozzle L'extends downwards into the glass sight tube M whose lower end is
in direct communication with the chamber G by the branch or passago G³ as shown
in Figure 1 The channels G communicate with the parts to be lubricated by the
passage G¹ which can be closed by the long valve G² as shown in Figure 2.
When the valve G is closed steam pressure is entirely shut off from the whole
and portions connected therewith.
cup
The apparatus works as follows
The cup A is charged with the lubricant (the valve K and I¹ being open mean-
while to allow the escape of air, and the valve G³ closed so as to shut off the
pressure) by pouring it into the cup D whence it passes the open valve C and
passage B into the cup A the valve C and K are then closed and valve G³ opened.
The steam also passes by tube F' to the condenser F finally settling in the form
of water in the chamber E as the valve E vibrates with the shaking of the
machinery the water escapes down the pipe A¹ and passing out at the open end
thereof enters cup A underneath the lubricant which being of lighter specific
gravity than the water floats on top of it.
The lubricant as it rises in the cup A under the influence of the water which
keeps flowing in escapes by the passage I and collects in the nozzlo L whence it
falls in drops through the sight tube M and flows by passage C³ chamber G and
passage G to the steam pipe valve chest or other place where the lubricant is
required.
The amount of lubricant flowing may be regulated by the valves I¹ and G³ but
chiefly and preferably by the former.
The vibrating valve E¹ may be dispensed with if desired, but for locomotive
engines and in other situations where there is plenty of vibration it is preferablo
to employ this valve as it regulates the supply of water while the engine is working
and entirely cuts it off when the engine is stopped thus preventing waste of the
lubricant, and automatically stopping the lubrication which would otherwise have
to be done by closing the valves G or I¹.
Having now particularly described and ascertained the nature of our said
Invention and in what manner the same is to be performed we wish it understood
that we make no claim to the vibrating valve E¹ per so but only in such coin-
bination as is set forth in the claims but we declaro that what we claim is
First In a sight feed lubricator the combination with the cup or reservoir A
of the separate filling cup D connected with A by the branch B the opening
whereof is controlled by the valve C substantially as specified.
Second In a sight feed lubricator the combination with cup A of the air valve K
and regulating valve I' for the purpose of controlling the communication between
the atmosphero and the interior of the cup A or between the atmosphere and the
interior of the sight tube M and connecting portions or between all of these
substantially as specified.
Third-In a sight feed lubricator the combination with the cup or reservoir A
of a vibrating valve El adapted to pass the condensation water into A for the
purpose of expelling the lubricant substantially as specified.

page_text: Fourth-In a sight feed lubricator. the combination with the cup or reservoir A
of the chamber G adapted to receive the steam by branch G' and lubricant by
branch G³ and controlled by valvo G.substantially as specified.
Fifth-In a sight feed lubricator the valve G³ traversing the whole length of
chamber G and adapted when closed to cut off the steam from the whole cup and
connections and at the same time to stop the flow of the lubricant substantiallý as
specified.