Improvements in Lubricators.
Year: 1893

page_text: Date of Application, 26th Oct., 1893
Complete Specification Left, 26th July, 1894-Accepted, 1st Sept., 1894
PROVISIONAL SPECIFICATION.
Improvements in Lubricators.
I, ANDREW HOWAT of 24 Fairlorn Street, Moss Side, Manchester, Engineer,
do hereby declare the nature of my said invention to be as follows:-
These improvements refer more particularly to lubricators of the sight feed type,
in which a globular or other similar form of glass cup is used for holding the oil or
other lubricant and which is mounted on a tube for conveying the oil to the part
to be lubricated and in the length of which tube an opening is formed for viewing
the feed. A valve or cock is also fitted in the length of this tube for controlling
or regulating the flow of oil.
Now my invention relates to the regulating cock and has for its object to provide
means or apparatus, supplementary to the ordinary taper plug, for controlling the
flow of oil, and my invention also consists in means of locking such supplementary
apparatus after once being set so that the adjustment thereof shall not be affected
by shock or vibration and the flow of oil shall be constant and uninterrupted.
In accordance with my invention I form the plug of the cock in the usual way
and I then form a conical opening in the plug body extending upwards from the
narrower end of the plug to a point a little above the usual transverse port or
opening. Into this opening I fit a taper plug or spindle being screw threaded to
screw into the wider end of the opening and hence by screwing or unscrewing said
spindle or plug the degree of opening presented by the transverse port or passage
for the passage of oil may be increased or diminished according as it is required to
cause one, two, or more drops of oil to flow through the valve.
To fix the spindle or supplementary plug after being once set and to prevent
such adjustment being disturbed by shock or vibration as aforesaid I provide the
same with a disc or washer fitted onto the square of the ordinary plug, said disc
being provided with a series of holes or openings near its periphery. Through a
screw hole formed in head of the supplementary plug a small set screw is fitted the
point of which is in a line with and is capable of entering any one of the holes of
the disc aforesaid. It will now be seen that after the supplementary plug has been
screwed in or out of the main plug and the flow of oil has been adjusted the set
screw by being screwed into one of said holes will securely and effectually lock the
spindle in position and prevent its turning round.
This method of locking the supplementary plug may be effected in other ways
say, by means of a lock nut or by means of a nut screwing into the holes of the
disc aforesaid.
It will be obvious that the improved fitting will not interfere with the opening
or closing of the valve or cock, nor will the opening and closing of the valve or
cock affect the adjustment of the supplementary plug.
In accordance with the second part of my invention I form the top of the cup
with a narrowed neck and I fit said neck with a cork or stopper fitted with a brass
or other metal cap which fits over the neck thus forming a neat finish to the
glass and constituting a means of readily filling the oil cup. Through the cap
and cork a small hole is formed or a small tube is fitted thereto to prevent a
vacuum being formed in the oil cup as the oil descends.
Dated this 25th day of October 1893.

page_text: Improvements in Lubricators.
I ANDREW HOWAT of 24 Fairlorn Street Moss Side Manchester Engineer,
do hereby declare the nature of my said invention and in what manner the
same is to be performed, to be particularly described and ascertained in and
by the following statement :-
These improvements refer more particularly to lubricators of the sight feed type,
in which a globular or other form of glass cup is used for holding the oil or other
lubricant and which is mounted on a tube for conveying the oil to the part to be
lubricated and in the length of which tube an opening is formed for viewing the
"feed." A valve or cock is also fitted in the length of this tube for controlling
or regulating the flow of oil.
Now my invention relates to the regulating cock and consists essentially of means
or apparatus supplementary to the ordinary taper plug whereby the feed is
adjusted to the requisite degree whilst the turning on or shutting off of the oil is
effected by the plug aforesaid, thus avoiding the necessity of adjusting the feed
each time the cock is closed or opened. My invention further consists of means
of locking such supplementary apparatus after once being set so that the adjust-
ment thereof shall not be affected by shock or vibration.
My invention also consists in forming the oil cup with a removable cap or cover
to facilitate the filling of said cup instead of such cup having to be removed as
heretofore.
And in order that my said invention shall be the more readily understood and
carried into practical effect I have hereunto annexed a sheet of drawings and will
now proceed to describe the same with the assistance of the various figures and
letters of reference marked thereon.
Fig. 1 is a side elevation of my improved lubricator, Fig. 2 is a vertical
transverse section on line A-B. Fig. 3 is a horizontal section on line C-D
and Fig. 4 is an outside plan.
In accordance with my invention (A) is the body of the cock or valve and (B)
the plug whereby the communication between the oil cup (C) and the part being
lubricated is opened or closed. (D) is a plug or valve fitting as illustrated into an
opening (E) formed in the body of the plug (B). The opening (E) into which
the plug (D) fits is screw threaded at its entrance and extends slightly beyond and
intersects the transverse opening of the plug (B) where it partakes of the same
taper as that of the valve (D). The valve (D) is screw threaded at (F) and on
being screwed into the opening (E) also intersects the transverse passage of the
plug (B) and if screwed far enough closes such passage altogether.
By this valve (D) the feed or flow of oil is regulated, whilst the supply is
turned on or off by the plug (B).
The method of working my improved lubricator valve is as follows:-The
plug (B) being closed and the valve (D) being fully screwed into the opening (E)
no oil can flow from the oil cup. On turning the plug (B) the transverse opening
therein leaves a clear passage for the oil, but such flow is obstructed by the
valve (D).
The valve (D) is then slowly unscrewed out of its opening uncovering the
passage for the oil until the requisite amount shall pass through which can be
readily determined by watching the oil flow past the sight feed opening (G) when
the adjustment is complete. Such adjustment having been effected and it is desired
to shut off the flow of oil the plug (B) is turned which closes all communication
with the oil cup (C) but the valve (D) which turns with it remains undisturbed in
its relation to the said plug, hence when the time comes to turn on the oil again no
readjustment of the flow of oil or the valve (D) is requisite.

page_text: To fix the valve (D) after once being set and to prevent its being disturbed by
shock or vibration I provide a disc (H) mounted on the end of the plug (B) and
which abuts against the shoulder (1) and is clamped in position by the nut (J).
In the face of the disc holes (K) are formed (see detail view Fig. 5) into any one
of which the point of the screw (L) may take screwing through the hand
wheel (M) of the valve (D) (see Fig. 1). The valve (D) having been regulated
to the required extent the point of the screw (L) is screwed into the hole opposite
or nearest its extremity in the disc (H) and thus the valve is locked in position.
This locking of the valve (D) may be effected by a lock nut on the screwed part
of its spindle screwing against the plug (B), or by other equivalent means.
In accordance with the second part of my invention and in the case of spherical
oil cups I form the top of the cup with a narrowed neck or flange and fit said neck
with a cork or stopper fitted with a metal cap which fits over the edge of the cork
and the edge of the glass neck, thus forming a neat finish to the cup. This cap
and stopper facilitate the filling of the cup which has previously been done by
inverting the lubricator. This stopper and cap is applicable to other forms of oil
cups as illustrated on the accompanying drawing. To prevent a vacuum being
formed inside the cup when the oil is flowing I provide a small hole (N) in the
stopper or cover (O).
Having thus 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.
1st. In lubricators the use of a cock or valve comprising the plug (B) for
opening or closing the oil supply pipe fitted with an internal valve (D) for
effecting the minute regulation of the oil to the part to be lubricated substantially
as hereinbefore described and illustrated on the accompanying drawing.
2nd. In lubricators the combination of the plug (B), valve (D) and locking
devices substantially as set forth and illustrated.
3rd. The improvements in the oil cups of lubricators substantially as herein-
before described.
Dated this 25th day of July 1894.
JOHN G. WILSON & Co.,
Agents.