An Improved Construction of Sight Feed Lubricators.
Year: 1892

page_text: Date of Application, 13th Oct., 1892-Accepted, 26th Nov., 1892
COMPLETE SPECIFICATION.
An Improved Construction of Sight Feed Lubricators.
1 WILLIAM WELSH BRANSTON of the firm Parsons Fletcher and Co.,
Gravel Lane, Southwark, London, Oil Merchant, 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 :-
This invention has for object the construction of an oil lubricator from which
the oil is allowed to flow to a shaft at the time of revolving in quantity proportional
to the use, the said lubricator having two chambers with glass casings to enable
the oil to be seen at all times whereby the flow can be regulated from the upper to
the lower chamber by a tube plug which is connected with the screw down cap the
plug permitting the oil to flow at any determined rate in proportion to exposure of
a hole in that part of the tube plug which is within the upper chamber.
The invention will be clearly understood by reference to the annexed drawings.
Figure 1 is a perspective elevation of the lubricator complete.
Figure 2 vertical section of same.
The outer case is composed of three tiers connected by radial bars. The lower
tier forms the nut A by which the stem B can be screwed into a bearing; the
upper ring of the tier A is screwed to the tier C just above the radial bars D. D,
within which a short length of glass tubing E is cemented in a liquid tight manner.
The middle tier C is dished at F and has a central shoulder G as a guide for the
tube plug H which is hollow for a given height from the bottom as at I.
The upper tier J is in a piece with the middle tier C by the radial bars K. K.
which enclose the upper glass. tube L.
M is a screw cap from the centre of which depends the hollow tube plug H and
it is by screwing the cap M upon the upper tier J that the opening I in the plug
tube H can be regulated. N is the hole in the cap M through which the upper
vessel L can be charged with oil and P is a swivel cover to prevent the entrance
of dust.
In action, after charging the upper vessel with oil, the screw cap is unscrewed to
open the passage 1 for the oil to flow into the lower chamber E, drop by drop, until
the level in the lower chamber is determined. As the oil is drawn by the revolving
shaft from the lower chamber, the passage 1 is more or less opened in order to
maintain the level and establish a constant and uniform lubrication of the shaft in
due proportion to its speed. The level of the oil in both chambers being visible
the upper chamber can be replenished as it becomes low.
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 :-
An oil lubricator with two chambers provided with glass tubes and the cap
having a hollow plug by which the flow of oil from one chamber to the other can
be regulated in the manner set forth and constructed as shown in the annexed
drawings.
VILIN
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said W. W. Branston.