IMPROVEMENTS IN AUTOMATIC OILERS
Year: 1885

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I, HERBERT JOHN ALLISON, of the firm of Allison Brothers, of 52 Chancery
Lane, London, in the County of Middlesex, Patent Agents, do hereby declare the
nature of said invention for IMPROVEMENTS IN AUTOMATIC OILERS," a commu-
nication to me from abroad by John Scott Hall, of 40 Courtland Street, in the
City and State of New York, United States of America, Manufacturer, and in
what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement, reference being bad to the
accompanying drawings forming a part of this specification, in which :-
Figure 1 is a central vertical section of an oiler containing my invention.
Figure 2 is a horizontal sectional view on the line x, x, Figure 1.
Figure 3 is a side elevation of the sight tube attached to the lower end of the
oiler for a purpose presently described.
Figure 4 is an end view of the central tube of the oiler showing the slotted
openings hereinafter described, and
Figure 5 is a vertical central section of said tube on the line y, y, Figure 4,
showing also a part of the cap to which it is attached when in use.
My invention relates to an automatic oiler in which the outflow of oil therefrom
is regulated by an adjustable oil valve at the bottom of the oiler and by an adjust-
able air vent valve above the bottom of the oiler to regulate the admission of air,
the air being admitted below the surface of the oil, so that in passing up through
the oil the air acts as a visual indicator of the rate of outflow of oil from the
oiler, the air thus introduced, acting in combination with the oil valve to regulate
the outflow of oil and also as a visual indicator of said outflow, said oiler being
also provided with two nozzles for the discharge of the oil from the oiler, the
principal or upper nozzle discharging into a transparent tube, so that the oil in
passing from said nozzle to the second or lower nozzle may be seen, and my
invention consists in the devices and combinations of devices herein described
and claimed.
A, is the body of my oiler and is made of glass or other transparent material,
closed at the top by a cap B, and with a narrow opening at the bottom closed by
the cap C, the joints between these caps and the body of the oiler being made air-
tight. D, is a tube which at the upper end is screwed into the cap B, and at the
lower end into the cap C. By means of this tube provided with screw threads at

page_text: either end said caps are screwed down tightly onto the body of the oiler. The
upper end a, of this tube, which extends above the cap B, is provided with one or
more longitudinal slotted openings b, and with screw threads on its exterior.
c, is
a screw threaded cap which may be screwed down upon the end a, thus closing
the said upper end of the tube D.
Intermediate between the ends of this tube and within the body of the oiler, is
an air hole d, made through the body of the tube for the admission of air into the
oiler from the upper end of said tube.
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This tube is provided with an aperture e, through its wall for the discharge of
the oil from the body of the oiler into the interior of the tube and thence through
the nozzle formed at the lower end of the tube f, which extends from the cap C.
From the cap c, extends a rod g, down through the tube D, the lower end h, of
which forms a valve with the valve seat ¹, within the cap C. The said valve seat
being preferably made tapering as shown, will centre the end of the rod in the
seat and thereby form a tight joint when the valve is screwed down.
This valve may be opened or closed to any desired extent by running the cap c,
up or down upon the end a, of the tube D, the same movement of the said cap
serving to open or close the slotted opening or openings b. By this arrangement,
the movement of the single device, namely the said cap c, serves to open or close
both the said oil valve h, and the air or vent opening b, correspondingly.
A separate opening for the filling of the oiler is made through the cap B, which
may be closed by any suitable device, preferably by a screw plug i.
E, is a tube screwed on tightly to the tube f, and in the lower end of which is
formed a nipple j, for the final discharge of the oil. Upon opposite sides of this
tube are formed large openings, and into the tube is fitted a glass tube k, with
close joints at its ends, at the lower end with a shoulder formed in the tube E, at
the entrance to the lower nozzle and at the upper end with the tube f. This
arrangement permits the oil to be plainly seen while passing through the said glass
tube from the upper to the lower nozzle.
At the lower end of the cap c, is formed an annular flange l, provided with
notches around its periphery, and m, is a spring catch secured upon said cap c, and
arranged to engage said notches whereby the said cap is held in any desired position
and prevented from being unintentionally turned, so as to either open or close the
described valve or slotted opening, by any jarring or motion to which the oiler may
be subjected in use.
The operation of this oiler is as follows:-The oiler being filled with oil, the
valve h, being closed during the filling and then the aperture i, through which
the oil is introduced being closed, the valve h, is opened by turning back the cap c,
so as to allow the oil to escape at the rate desired, the slotted opening at the top
of the tube being by such movement correspondingly opened so as to allow the
air to be admitted in proportion as the oil is discharged. The air passing down
through the tube D, and escaping into the body of the oiler and into the oil, passes
in bubbles up through the oil above its surface, thereby disclosing to the eye the
rate at which the oil is discharging through the aperture e, into the tube D, and
out through the tubo f, the body of the oiler being transparent the bubbles of air
can be seen as they pass upward to the surface of the oil.
It sometimes happens that oil of so dark a color is used that these bubbles are
not plainly visible, the additional means described for observing the rate of the
discharge of oil, nainely the tube E, with its glass covered openings, is provided to
obviate the described difficulty which sometimes occurs when dark oil is used, and
which when employed renders it unnecessary to form the body A, of transparent
material.
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
1. In an automatic oiler, the combination, with the transparent body A, closed
at the top and bottom respectively by caps B and C, the tube D, extending through"

page_text: said caps and body and provided with the openings d, e, and b, the adjustable cap c,
the rod g, secured to said cap and extending through said tube D, to the valve
seat h, as and for the purpose described.
2. In an automatic oiler, the combination of the cap c, the rod g, and valve
seat h¹, said cap being provided with a notched annular flange l, and the spring m,
all as and for the purpose specified.
3. In an automatic oiler the combination with the body of the oiler, the tube D,
provided with the apertures d, and e, and the slotted opening b, the described valve
in the lower end of the oiler, of the transparent drip chamber formed of the tube E,
provided with openings through its walls and a glass tube k, within the tube E, as
and for the purpose described.