Improvements in Sight Feed Lubricators.
Year: 1898

page_text: Date of Application, 23rd Apr., 1898-Accepted, 11th June, 1898
COMPLETE SPECIFICATION.
Improvements in Sight Feed Lubricators.
We, JAMES LIONEL GRANDISON, of 119, Broughton Lane, Manchester, and
WILLIAM PICKETT, of 21, Lindsay Street, West Worsley Street, Salford, both in the
County of Lancaster, Engineers, 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 relates to the condensor and piston type of sight feed lubricators
for use in connection with supply pipes or valve chests of steam or air engines.
In practice it has been found that when feeding oil by these types of lubricators
into the supply pipe or valve chest at a pressure much lower than the pressure at
the point from which the steam supply is taken or in the case of feeding oil through
one lubricator into two or three cylinders at varying pressures, the ordinary conical
valve is liable to clog up and thus interrupt and render the feeding irregular.
The object of our invention is to provide means whereby the flow of oil from the
supply vessel to the sight feed glass of the lubricator can be regulated to a nicety
without danger of the respective valves becoming clogged.
And in order that our invention may be more fully understood we have caused
to be appended hereunto one sheet of drawings, marked with letters of reference
indicating like parts in the various figures, showing the portion of a lubricator
between the supply vessel and sight feed glass, Fig. 1 being an elevation and
Fig. 2 a vertical section.
In carrying out our improvements, a is the elbow piece by which the oil supply
vessel (not shown) and the sight feed glass are connected together and c the valve
spindle by which the flow of oil from the supply vessel to the sight feed glass b is
generally controlled.
The valve spindle c we form with a semi-spherical or similar shaped end c¹ and
in front thereof we form in the elbow piece a, a cylindrical hole d concentric with
the passage e which leads to the oil supply vessel, the end of which passage opposite
to the valve spindle end c¹ is slightly widened and forms a seating d for the latter.
In the hole d we employ a conical plug or valve f of such a length that when the
valve spindle end c has been screwed upon its seating, the thin end of the plug
or valve f bears against and closes the passage e leading to the oil supply vessel and
its thick end abuts against the valve spindle end c¹.
When the valve spindle c is withdrawn and its end c¹ thereby removed from the
seating the flow of oil from the supply vessel causes the plug or valve f to
move longitudinally with the spindle c and thus allows the oil from the supply
vessel to flow through the cylindrical hole d, and seating into the sight feed
glass b.
The quantity of oil to be fed may be regulated at will by screwing the valve
spindle c either in or out.

page_text: Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim, is:-
In sight feed lubricators of the types hereinbefore referred to, a cylindrical hole d
formed in the passage between the oil supply vessel and the sight glass, in combina-
tion with a conical plug or valve f, employed in the said hole and a valve spindle c
with a semi-spherical end c adapted to operate in conjunction with the said plug or
valve and the seating d' of the said hole, all substantially as and for the purpose
set forth.
Dated this 22nd day of April 1898.
F. BOSSHARDT & Co.,
4, Corporation Street, Manchester, Agents to Applicants.