Improvements in Sight Feed Lubricators.
Year: 1894

page_text: Date of Application, 25th Jan., 1894-Accepted, 3rd Mar., 1894
Improvements in Sight Feed Lubricators.
I, WILLIAM WELSH BRANSTON, of the Firm Parsons, Fletcher, and Co.,
Gravel Lane, Southwark, London, Oil Merchant, 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 object, certain improvements in sight feed lubricators in
order to render them more efficient than at present.
The invention consists of a novel means for determining the feed or flow of oil,
also to means for stopping the oil aperture without interfering with the regulating
device.
According to the present system, the oil aperture is regulated for flow by a plug;
and when the day's work is finished, or when the machine to which such a lubricator
is affixed is stopped working, the flow continues unless the regulator be shifted to
shut the plug down, after this is done, the regulator must be readjusted, and this
requires skill to prevent waste.
By my present invention, the regulator and the plug has each a distinct action,
and the regulator can be adjusted and kept at one level for any length of time, the
plug alone being moved to open or to shut the aperture.
In order to allow of these advantages being obtained, I improve the construction
of the lubricator, and arrange the parts in a more mechanical and easy comeatable
manner.
The invention will be clearly understood by the annexed drawings.
Figure 1 is a vertical sectional and Figure 2 a perspective exterior elevation of
my improved sight feed lubricator, Figure 3 being a detached view of the regulator
tongue and cap with the closing plug within said cap and its stem.
A is the exterior metal. B glass tube or cylinder therein and constituting
the oil reservoir. C depending metal socket also containing a glass tube D.
Ea screw threaded end to the socket C. F, F, notches or nicks at intervals
around the upper band of the metal part of the reservoir. Gscrew ferrule in
depending socket C to fix glass tube D in place, said ferrule having an upper lip H
above the bottom of the reservoir to form a dip or bason for retaining sediment or
dirt that may settle from the oil, the lip also serving as a seat for the regulator
valve I when it is screwed home. J threaded end of stem K to engage the
inner thread of the ferrule G. L, L, holes in threaded portions of stem K
and leading to axial passage in lower part of same. M cap on stem K.
N tongue shaped to engage nicks F, F, when cap is turned in either direction.
P shutter of oil filling hole. Q central rod of plug R. S button head of same.
Plug R is a swelling on rod Q and fits wall of axial passage when pushed down,
and is clear of it when raised up.
For using the lubricator, charge the reservoir while the valve I is down on its
seating, the height of the oil being visible through the glass cylinder B, turn the
cap M upwardly to uncover holes L, L, and watch glass tube D for oil drips from
lower point of rod Q, adjust cap M to prevent over accumulation of oil in glass
tube D the tongue N of cap M being in one of the nicks in the band from which it
will readily escape on application of slight pressure for perfect adjustment according
to the quantity of oil required for lubricating purposes, such as in the bearing of a
quick running shaft.
The cap M when once adjusted can remain in that position for any length of
time, and when the flow of oil has to be stopped, such as when the shaft. is
stopped running, it is only necessary to push down the rod Q by pressing on its

page_text: button head S, and to pull it up again when the shaft is re-started, after which the
previously determined and regulated flow of oil will again take place.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. The construction and arrangement of the several operable parts indicated on
the drawings by the letters F, M, N, Q, R, as means or appliances for regulating
or determining the flow of oil for the purpose set forth.
2. In combination with a lubricator having an oil regulating valve device, a
central movable stem for independently opening and closing the passage without
necessitating a movement of the valve, as set forth.
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said William Welsh Branston.