Improvements in Lubricators.
Year: 1898

page_text: Date of Application, 22nd Aug., 1898-Accepted, 26th Nov., 1898
Improvements in Lubricators.
I, ALFRED LUTZE, of 10, Alte Promenade, Halle on the Saale, in the Empire of
Germany, Manufacturer, 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:—
The difficulty hitherto noticeable with lubricators, whether the same have
closed or open reservoirs, is that the supply of oil to the parts of the machinery,
varies according to the level of the liquid in the reservoir, .e. when the latter
is full, more oil will be supplied by the lubricator and when it empties, the
supply diminishes accordingly. This variation is due to the alteration of the
weight of the column of liquid above the supply point or outlet nozzle.
be
The object of the present invention is to obviate this disadvantage as far as
possible. This object is attained by allowing the column of liquid to
influenced by the atmospheric air entering to the same from the bottom of the
reservoir.
And in order to render the present specification more easily intelligible reference
is had to the accompanying drawing in which similar letters of reference denote
similar parts throughout the several views:-
The reservoir A is provided with a central tube C, which passes through the
cover B and is screwed into the bottom of the said reservoir. Within the said
tube is mounted the spring pressed regulating spindle D in the well known
manner. The inlet opening E for the oil is closed by means of a plug having
washer a to render it air tight, said plug being retained in position by means
of a bow F which may be depressed by the nut c on the tube C. The opposite
end of the bow presses on a similar plug with washer or cushion disc b. The
upper end of the tube is provided with orifices d d which communicate with the
outside air, whilst a lower orifice f is provided communicating with the interior
of the oil reservoir. Thus the oil is in communication with the atmospheric air
by means of the said orifices dd and f.
As the level of the oil in A sinks vacuum to a certain degree will be formed
in the upper part of this chamber and the pressure of the outer air on the column
of oil in the tube C will be relatively increased and this pressure will tend to
prevent the column in the said tube, when the receptacle is full, or nearly so,
from attaining the height of the level of the liquid in the receptacle C. Thus
the arrangement of the upper air holes d d and the lower air communication f to
the interior of the receptacle will tend to equalize the height of the column of
liquid in the tube C, preventing an excessive column when the lubricator is full.
Experiments have shown that the lubricator discharges evenly irrespectively of
the contents of the reservoir.

page_text: Having now particularly described and ascertained the nature of n. said
invention and in what manner the same is to be performed, I declare tha:
I claim is
what
T
A lubricator having the oil reservoir air tightly closed by means of a b F
and elastic discs a and b, a tube C and means for feeding air through the same to
the reservoir substantially as described.
Natal : 003 1
e At 1000
HASELTINE LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.