Improvements in Sight Feed Lubricators for Steam Engines.
Year: 1892

page_text: Date of Application, 5th May, 1892
Complete Specification Left, 6th Feb., 1893-Accepted, 8th Apr., 1893
PROVISIONAL SPECIFICATION.
Improvements in Sight Feed Lubricators for Steam Engines.
We, WALTER GRIMES of Silverlands, St. Margarets, Twickenham, in the
County of Middlesex, Salesman, and CHARLES CHEERS WAKEFIELD of Beech
Lea, Edge Lane, Liverpool in the County of Lancaster, Manager, do hereby
declare the nature of this invention to be as follows:-
This invention has for its object certain improvements in sight feed lubricators,
the chief advantages being simplicity of construction and consequent fewness of
parts, certainty of action and durability.
In carrying our invention into effect, the reservoir for the oil is of any convenient
construction, and means are provided for supporting it in any convenient position.
A feed opening for oil is provided at its top, and a discharge opening at its bottom
for withdrawing the condensed water, and screw plugs are inserted therein when
the apparatus is to be used. The condenser is a simple chamber, immediately
above the oil reservoir, and a passage therefrom descends nearly to the bottom of
the reservoir. A stand up pipe in the reservoir, takes oil therefrom to the injecting
apparatus. The steam from the boiler enters the condenser by means of a passage
communicating with the steam pipe. Part of the steam is also taken to the
injecting apparatus. The oil from the reservoir passes along the stand pipe,
through a sight glass of suitable construction to the injecting apparatus. A valve
is provided for regulating simultaneously the flow of steam and oil or separate
valves may be employed if desired.
The mode of action is as follows-
The valve being opened, part of the steam finds its way by the passages to the
condenser, where some of it condenses, and then passes by the passage to the bottom
of the oil reservoir where it collects, and by its superior specific gravity, displaces
the oil which rises little by little and overflows into the stand up pipe.
thence it rises drop by drop through the sight glass to the injection apparatus,
where it is carried by the steam to the engine.
From
A valve is preferably provided in proximity to the sight tube, as well as the
valve for closing communication with the boiler and parts to be lubricated. By
closing these valves therefore, the plug in the top of the oil reservoir can be
removed, and the latter replenished with oil, or if the sight feed glass should
accidentally break, the valves can be closed until the glass is replaced.
It must be understood that we do not confine ourselves to the exact arrangement
which we have described, this being merely a description of our apparatus in the
form which we at present prefer. It can be varied in many ways, for example, as
regards the injector, the steam and oil can be brought in by any convenient
arrangement for injection into the steam chest or other part.
Dated this 4th dor of Mar 1900
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Patent Agents for the Applicants.

page_text: COMPLETE SPECIFICATION.
Improvements in Sight Feed Lubricators for Steam Engines.
We, WALTER GRIMES, of Silverlands, St. Margarets, Twickenham, in the
County of Middlesex, Salesman, and CHARLES CHEERS WAKEFIELD of Beech
Lea, Edge Lane, Liverpool in the County of Lancaster, Manager, 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 for its object certain improvements in that class of lubricators,
into which steam is admitted, a part of which is condensed and, passing down to
the bottom of the oil reservoir, displaces the oil contained therein, causing it to pass
through a sight feed glass and along passages to a chamber where it meets a jet of
steam and is carried along by the latter to the steam chest or other part requiring
lubrication. The improvements have for their objects simplicity of construction
and consequent fewness of parts, certainty of action and durability.
The manner in which they are carried out will be understood from the following
description, reference being had to the accompanying drawings, in which :-
Figure 1 is a vertical section of a double lubricator constructed according to our
invention :
Figure 2, a sectional plan of the same through
xx:
Figure 3, a vertical section through y y at right angles to Figure 1:
Figure 4, a vertical section through z, Figure 3:
=
Figure 5, an end view of the same showing the steam and oil outlets:
Figure 6, a vertical section of a single lubricator, and
Figure 7, a sectional plan of the same.
Referring first to Figures 1 to 5 :-
A, is the oil reservoir and B, the condenser, both formed, as shown, in the same
piece of metal. .C is a feed opening through which the oil reservoir is filled:
and D, its plug. E is a drain cock to let water out of the reservoir before filling
the same with oil. F is a condenser pipe descending nearly to the bottom of the
oil reservoir and G, stand up pipes for conveying oil to parts hereinafter
described.
:
H are sight feed glasses; and I, a multiple passage cock (shown open in the
drawing) controlling a steam passage J and two oil passages K. L is the steam
inlet, M the outlet for the steam, and N the oil outlets (Figures 4 and 5). It is a
special feature of this invention that most of the parts hereinbefore described are
formed in one piece of metal (as seen more particularly in Figure 3). Figures 6
and 7 represent a single lubricator, that is, a lubricator having only passage and
one outlet for oil and consequently only one sight feed glass. The essential
features of this lubricator are the same as in the double lubricator, the con-
struction only being slightly modified. The same letters refer to the same parts in
both cases.
We will describe the mode of action of the double lubricator, the single one
being afterwards easily understood.
Having first closed the cock I, the plug D is removed and the reservoir A
filled with oil through the opening C. The plug D is then replaced and the
cock I opened, which allows part of the steam that has entered at L to pass
along the passage J to the condenser B, where some of it condenses and passes
down the pipe to the bottom of the oil reservoir, and, by its greater specific
gravity, displaces the oil, causing it to pass down the stand up pipes G. From
thence it rises, drop by drop (regulated by the valves O) through the sight feed
glasses H, Figure 1, and travels along the passages K to the back of the con-
denser, Figure 2, and through the plug I to the outlets N, where it comes in
contact with jets of steam from the inlet L, as shown in Figure 4, by which it

page_text: is carried along steam pipes coupled at N to the steam chests or other parts
requiring lubrication by pipes P.
It must be understood that we do not confine ourselves to the exact arrangement
herein described, as, for example, the steam inlet and the oil and steam passages
could be differently arranged without departing from the principle of the invention,
which consists in constructing a lubricator of the kind herein before described of as
few parts and in as simple a mauner as possible.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is:-
1. A single casting comprising a reservoir, condenser and multiple passage cock
barrel, substantially as and for the purposes described.
2. In a lubricator, the combination of a cock plug having both a steam passage
and an oil passage through it with a casting comprising a condenser, a steam inlet,
steam and oil outlets in close contiguity and passages connecting respectively the
steam inlet with the condenser and with the steam outlet and the sight feed devices
with the oil outlets, substantially as described.
3. In a lubricator, the combination, with a reservoir and condenser, of a multiple
passage cock, each oil passage therein feeding lubricant from an independent sight
feed device to an independent lubricating tube, substantially as described.
4. The combination of the cup C, condenser B, reservoir A and passages J K L
M N, all formed in one casting.
5. The combination of the passages L M N K and J substantially as and for the
purposes described.
6. The combination of the reservoir A, pipes G, duplicate sight feed devices H
on opposite sides of reservoir A, two oil delivery pipes P with passages K con-
necting same, substantially as described.
Dated this 4th day of February 1893.
WM. P. THOMPSON & Co.,
Of Liverpool, Manchester, Nottingham and London, Patent Agents.