An Improved Automatic Lubricator.
Year: 1890

page_text: Date of Application, 2nd Jan., 1890
Complete Specification Left, 29th Sept., 1890-Accepted, 13th Dec., 1890
PROVISIONAL SPECIFICATION.
An Improved Automatic Lubricator.
I, JOHN MCDONELL, of 21, Upper Cecil Street, Limerick, Ireland, Mechanical
Engineer, do hereby declare the nature of this invention to be as follows:-
This invention has reference to an improved automatic apparatus for lubricating
purposes, of simple, economical, and efficient construction and is especially designed
to facilitate the use of solid lubricants.
My invention consists of a cylinder of suitable dimensions, provided on its inner
circumference with two spiral grooves so as to form a double threaded screw, and
within this cylinder is arranged a diaphragm the edge of which is provided with
spiral projections corresponding with the spiral grooves. On the cover or lid of the
cylinder is arranged a suitable box containing a coil spring one end of which is
secured to the box and the other end to a central spindle which extends through the
top of the box and is fitted on its outer extremity with a lever handle while its inner
end carries a disc which is connected to the diaphragm by hinges in such a way that
when the spindle is rotated the disc and diaphragm will also rotate, while, owing to
the expansion of the hinges the diaphragm will be free to travel from end to end of
the cylinder in virtue of its action in the spiral grooves above described, and thus
force out the lubricant beneath same.
The bottom of the cylinder is fitted with a movable cover for inserting the lubri-
cating material.
The action of the invention is briefly as follows:-
The diaphragm is first brought to the top of the cylinder by turning the central
spindle during which the coil spring is wound up; the cylinder is then charged
through the bottom cover with the necessary lubricant when the apparatus is ready
for use.
When placed in position the spindle is released and the coil spring being free to
unwind will exert a constant and regular tendency to turn the disc and the diaphragm
which latter being influenced by the spiral grooves will be caused to advance steadily
and continuously and drive the lubricant through the outlet.
The speed or rate of feeding can be readily adjusted by winding or unwinding the
coil spring within certain limits. Likewise the influence of the coil spring can be
altered by varying the pitch of the spiral grooves in the cylinder and thus the rate of
feed can be regulated.
Dated this 1st day of January 1890.
J. K. FAHIE & SON,
9, Westland Row, Dublin, Agents for Applicant.
COMPLETE SPECIFICATION.
An Improved Automatic Lubricator.
I, JOHN MCDONELL, of 21, Upper Cecil Street, Limerick, Ireland, Mechanical
Engineer, 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 reference to an improved automatic apparatus for lubricating
purposes, of simple, economical, and efficient construction, and is especially designed
to facilitate the use of solid lubricants.
My invention consists of a cylinder of suitable dimensions, provided on its inner
circumference with two spiral grooves, forming a double threaded screw, and within
this cylinder is arranged a diaphragm, the periphery of which is provided with spiral
LD 617

page_text: projections, corresponding with and engaging in the spiral grooves; or vice-versa, the
spiral projections may be formed on the cylinder, and the grooves on the periphery of
the diaphragm, as illustrated in the drawings attached hereto. On the upper end of
the cylinder is arranged a suitable box, containing a coil spring, one end of which is
secured to the box, and the other end to a central spindle, which extends through the
top of the box, and is fitted on its outer extremity with a lever handle, or milled head,
while its inner end carries a hinge which is connected to the diaphragm, in such a
way that when the spindle is rotated, the diaphragm shall also rotate, while by the
expansion of the hinge the diaphragm will be caused to travel through the cylinder,
in virtue of the action of the spiral arrangement just described, and thus force out the
lubricant underneath.
The bottom end of the cylinder is fitted with a movable cover, for inserting the
lubricating material; this cover also forms a shank for fixing the apparatus in
position.
The accompanying drawings will enable my invention to be more readily under-
stood. Fig. 1, is an elevation, and Fig. 2, a section of the apparatus, the action of
which may be described as follows:-
The diaphragm A, is first brought to the position shown in Fig. 2, by turning the
milled head b, during which the coil spring c, is wound up and is held thus by the
insertion of a pin, d, in the spindle, having its free end abutting against a stud e.
The cylinder is then charged through the bottom, with the necessary lubricant, when
the apparatus is ready for use.
Upon placing in position the spindle is released by the withdrawal of the pin d,
whereupon the coil spring being free to unwind, will exert a constant and regular
effort to rotate the diaphragm, which latter being influenced by the spiral arrange-
ment will advance steadily and continuously, driving the lubricant through the outlet
with a practically constant pressure.
The rate of feeding can be readily adjusted by winding the spring with its box, to
the necessary tightness, where it is inaintained by the catch shown at f.
Likewise the action of the apparatus can be altered by varying the pitch of the
spiral arrangement.
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 :-
The use and application of an apparatus for lubricating purposes, constructed,
arranged, and operating in the manner substantially, as herein described and set forth.
Dated this 22nd day of September 1890.
J. K. FAHIE & SON,
9, Westland Row, Dublin, Agents for Applicants.