IMPROVE- MENTS IN SIGHT FEED LUBRICATORS
Year: 1885

page_text: I, JOHN THOMAS HAILWOOD of Ramsey Street, Rochdale in the County of
Lancaster, Engineer do hereby declare the nature of my invention for IMPROVE-
MENTS 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 :-
My Invention relates to that class of Lubricators known as sight feed lubricators
and has for its object the lubricating of the valves and pistons of steam engines &c;
and in order that my said invention, and the manner of performing the same may
be properly understood I will now proceed to describe the same by reference to
the drawing which represents a sectional elevation of the same :—
d
In this view a represents an ordinary lubricator consisting of a hollow vessel to
contain the lubricant, which is supported by means of the pillars 6 on the top of
the perforated nozzle c; the nozzle c having a thread formed on it so as to screw
fast into the steam pipe leading to the engine, & represents a glass tube which is
fixed in position by means of the steam tight glands e between the lubricator a
and the nozzle c and forms a communication between the same. The bottom of
the lubricator a is pierced by three holes f, g, and h in two of which are fixed the
tubes f¹ and g'; g is for the admission of steam to the lubricator, f for the emission
of oil from the lubricator, and for the escape of condensed steam from the same,
the apertures fand h being opened or closed as required by means of the valves k
and, the operation of the lubricator is as follows :-
The steam from the steam pipe into which the lubricator is screwed forces its
way through the perforated nozzle c glass tube & aperture g and tube g¹ into the
lubricator which is filled with lubricant, the steain on escaping from the end of the
tube g¹ forces the lubricant down the tube f¹ and orifice ƒ from the end of which
it escapes falling through the glass tube d, the amount of lubricant which escapes
can easily be seen as it falls through the glass tube and may be regulated by means
of the valve k which closes the orifice ƒ more or less as required, on .falling to the
bottom of the glass tube the oil makes its way through the perforated nozzle c
forcing the steam in the nozzle back by means of its superior weight and thus
mingling with the steam in the pipe to which the lubricator is fixed. As the oil in
the lubricator.becomes exhausted the steam condenses as it escapes from the pipe g¹
and fills the bottom of the lubricator a thus maintaining the lubricant at a high

page_text: level. When the lubricant is completely exhausted this condensed steam is drawn
off through the aperture h, which is opened for this purpose by means of the
valve 1, the condensed steam thus escaping through the glass tube into the steam
pipe. To charge the lubricator with oil the steam is first shut from it and the
valve closed, the lid m is then taken off and the lubricator filled up to the level
of the top of tube f¹ the lid m is then fastened down again and the lubricator is
then put in action by turning on the steam, the quantity of lubricant used being
regulated by valve k as before mentioned.
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
The fixing of a glass tube underneath an ordinary lubricator or hollow vessel
containing the lubricant and through which tube steam passes into the lubricator
or hollow vessel above and forces the lubricant through the glass tube substantially
as shown and described.