AN IMPROVED AND COMBINED REGULATING AND DISPLACEMENT LUBRICATOR
Year: 1871

page_text: LETTERS PATENT to Thomas Charles Pearson, of Openshaw, near
Manchester, in the County of Lancaster, for the Invention of "AN
IMPROVED AND COMBINED REGULATING AND DISPLACEMENT LUBRICATOR."
Sealed the 24th October 1871, and dated the 10th August 1871.
COMPLETE SPECIFICATION filed by the said Thomas Charles Pearson
at the Office of the Commissioners of Patents, with his Petition
and Declaration, on the 10th August 1871, pursuant to the 9th
Section of the Patent Law Amendment Act, 1852.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
CHARLES PEARSON, of Openshaw, near Manchester, in the County of
Lancaster, send greeting.
WHEREAS I am in possession of an Invention for "AN IMPROVED
AND COMBINED REGULATING AND DISPLACEMENT LUBRICATOR," and have peti-
tioned Her Majesty to grant unto me, my executors, administrators,
and assigns, Her Royal Letters Patent for the same, and have made
solemn Declaration that I am the first and true Inventor thereof.

page_text: NOW KNOW YE, that I, the said Thomas Charles Pearson, do hereby
declare that the following Complete Specification under my hand and
seal fully describes and ascertains the nature of the said Invention,
and in what manner the same is to be performed, in and by the following
statement:-
-
The object of this Invention is the construction of a simple form of
lubricator capable of being used either to regulate the supply of lubri-
cating material by turning a handle, which can be set to the greatest
nicety or to supply the lubricating material on the well known dis-
placement principle, this improved lubricator having no loose part or
cover necessary to be removed in order to charge it with the lubricating
material, and the ordinary cock or valve communicating with the
outside for the discharge of the condensed water being also dispensed
with.
In order that my Invention may be better understood and explained
in detail I have hereunto annexed a Drawing illustrating two modifi-
cations of my Invention, drawn to a scale of about full size, upon which
the same letters of reference are used to denote similar parts in all the
views.
Fig. 1 is an outside view, and Fig. 2 a sectional view of a lubricator
constructed according to my Invention; Figure 3 is a sectional view
of another modification of my improvements in lubricators; and Fig. 4
represents a sectional plan of Fig. 3 through the line a―b.
In Figs. 1 and 2 A is the body of the lubricator (herein-after called
the globe), shewn of a spherical form, but which may be varied in
shape according to taste. Upon the top of this globe A is screwed
a funnel or cup B, having holes C at the bottom communicating
with the interior of the globe, into one of which holes is screwed a
tube D, which allows for the escape of the air whilst the globe is
being filled. Into the bottom part of this funnel or cup B is screwed
a valve seating E, from which depends a stationary nut F supported
by the straps G, G. H is a handle screwed through the centre of
the funnel or cup B, and having at its lower extremity an annular
valve I which closes the orifice J, formed through the valve seating E.
Through the centre of this handle passes a spindle K, working through
the stuffing box L, and which spindle is actuated by the handle M
and is screwed through the nut F, as illustrated. In this spindle is

page_text: formed a passage N communicating with the chamber ○ (situated at
the bottom of the globe A, and communicating therewith through the
neck P) through the side passage Q, and with the interior of the globe A
through the upper side passage R. At the bottom of this hollow spindle
is also formed a double valve, marked S and T, the valve S closing
the communication between the globe A and chamber O by being
screwed up to the valve seating U and the valve T, closing the com-
munication between the lubricator and the passage V leading to the
steam pipe cylinder, or other vessel to be lubricated by being screwed
down upon the valve seating W.
The action of this lubricator is as follows:-When it becomes neces-
sary to fill the globe A the handle M is screwed down, so as to cause the
valve T to close the passage V leading to the steam pipe cylinder or
other vessel being lubricated. The handle H is then unscrewed a few
turns, thus raising the annular valve I off its seating F, when the
lubricating material may be introduced into the funnel or cup B, and
will find its way into the globe A through the holes C and orifice J, the
air escaping through the tube D. The handle H now being screwed
down again, so as to close the annular valve I, the lubricator is ready for
action, and if it be necessary to supply a quantity of the lubricating
material at once all that is requisite is to unscrew the handle M, so as to
place the double valve S-T midway between the two valve seatings U
and W, when the lubricating material will flow freely down the passage V.
If, however, it is required to regulate the supply of the lubricating
material this is accomplished by adjusting the distance of the valve T off
its seating W by means of the handle M. Again, if the lubricator is
required to be used on the displacement principle the handle M should
be unscrewed until the valve S is closed against its seating U (as seen in
Fig. 2), when the steam will enter the globe A from the chamber O
through the passages in the hollow spindle, and such steam becoming
condensed in the globe A the lubricating material therein contained will
be caused to float on the surface of the condensed water, and thus find
its way through the upper side passage R into the passage N and out
through the side passage Q into the chamber O, from whence it will
descend down the passage W. To remove the condensed water out of
the globe A it is only necessary to open the valve S, when it will escape
though the chamber O and passage W through the steam pipe, cylinder,
or other vessel being lubricated. It will thus be seen that this lubri

page_text: cator may be charged with lubricating material when the steam pressure
is on, and this without removing any loose part or cover, and also
without the use of an outside cock or valve at the bottom, which is
always liable to leakage; and further that such lubricator may be used
as a regulator or upon the displacement principle.
Instead of having a double valve at the bottom of the hollow spindle
a plug cock may be used, as illustrated in Figs. 3 and 4, having a hollow
plug a working in the body of the cock b, this body having a side
passage c cast in it to correspond with the passages d, d, and e, e, formed
in the hollow plug, the former leading into the hollow spindle, (which in
this case only turns round in the stuffing box and is not screwed through
a nut, as in the former modification, a shoulder being formed on the
spindle beneath the stuffing box to keep it in position,) and the latter
communicating with the lower part of the globe. In both Figs. 3 and 4
the plug is shewn in the position for using the lubricator on the
displacement principle, the passages in the plug a marked d, d, being
opposite the side passage c formed in the body b. In order to use this
modification as a regulating lubricator the plug a should be turned
round by means of the handle affixed on the top of the spindle, so as to
prevent the passages e, e, opposite to the side passage c in the body b,
and when requisite to fill the globe A. In this arrangement the plug a
is turned round so that the passages d, d, and e, e, will be at right angles
to the side passage c, and thus cut off the communication entirely.
.
Having thus particularly described and ascertained the nature of this
my said Invention, together with the best methods with which I am
acquainted for carrying the same into practical effect, I wish it to be
understood that I do not confine myself to the precise details, relative
proportions, shapes, or dimensions of the several parts of the lubricators
illustrated on the annexed Drawing, as the same may be considerably
varied without departing from the Invention; but what I claim is,—
1st. The use and application to lubricators of a spindle having
passages formed therethrough and fitted at its lower extremity with a
double valve in conjunction with a chamber provided with two valve
seatings, as and for the purposes described and illustrated on the
accompanying Drawing.
2nd. The use and application to lubricators of a spindle having
passages formed therein and fitted at its lower extremity with a hollow

page_text: plug working in a cock body constructed with a side passage, as and for
the purposes described and illustrated on the accompanying Drawing.
In witness whereof, I, the said Thomas Charles Pearson, have
hereunto set my hand and seal, this Ninth day of August, in
the year of our Lord One thousand eight hundred and seventy-
one.
Witness,
JOHN G. WILSON,
Patent Agent,
THOMAS CHARLES (L.s.) PEARSON.
71, Market St.,
Manchester.