An Improved Lubricator.
Year: 1889

page_text: Date of Application, 12th Jan., 1889
Complete Specification Left, 10th Oct., 1889-Accepted, 23rd Nov., 1889
[Communicated from abroad by AUGUSTUS CRANE BUZBY, of Philadelphia, Pennsylvania,
United States of America, Grease Merchant and Manufacturer.]
An Improved Lubricator.
I, JAMES COEY, of 6 Victoria Street, Belfast, in the County of Antrim, Ireland,
Oil and Grease Merchant do hereby declare the nature of this invention to be as
follows:-
My invention relates to an improved lubricator intended for use with viscous or
semi-solid lubricants.
My improved lubricator comprises a hollow cylinder or chamber closed at its upper
end and a piston provided with a central feed tube and with a screw which works in a
screw-threaded hole in the upper end of the said cylinder or chamber.
The piston is made to fit the said cylinder or chamber with sufficient accuracy to
prevent leakage without the use of packing around the said piston.
The upper
surface of the said piston, that is to say, the surface thereof which is in contact with
the lubricant, is cup-shaped and one or more holes are provided for the passage of the
lubricant from the cylinder or chamber into the feed-tube. The feed-tube is adapted
to be screwed into the bearing of a journal or, other part to be lubricated.
In my improved lubricator, the lubricant, which is compressed by the screwing
down of the cylinder or chamber, is guided to and forced through the said holes into
the feed-tube through which it passes to the journal or other part to be lubricated.
By reason of the cup-shaped upper. surface of the piston, the pressure is relieved
around the periphery of the said piston, and I am therefore enabled to dispense with
the use of packing around the said piston. This is an important advantage as
compared with other lubricators of the same kind or class in which packing is used, as
there is less friction and consequently the cylinder or chamber can be more easily
turned to force the lubricant through the feed-tube.
My improved lubricator can, moreover; be easily made and at a low cost.
Dated this 19th
1000
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicant.
COMPLETE
SPECIFICATION.
An Improved Lubricator.
I, JAMES COEY of 6 Victoria Street, Belfast, County Antrim, Ireland Oil and grease
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 :-
My invention consists in an improved lubricator intended more especially for use
with viscous or semi-solid lubricants.
In the accompanying drawing
Figure 1 is a side elevation and
Figure 2 a vertical central section, of my improved lubricator.
Like letters indicate corresponding parts in these two figures.
a is a hollow cylinder or chamber closed at its upper extremity and open at the
lower extremity. is a piston provided with a central hollow stem or feed tube C
and with a screw d which works in a screw-threaded hole in the upper end of the said
cylinder or chamber a. The piston is made to fit the said cylinder or chamber a
with sufficient accuracy to prevent leakage without the use of packing around the said
piston. The upper surface of the said piston b that is to say, the surface thereof which
[Price 6d.]

page_text: is in contact with the lubricant, is formed concave or cup-shaped as shown and one
or more holes e are provided for the passage of the lubricant from the cylinder or
chamber a into the hollow stem or feed tube c. The lower extremity of the said
hollow stem or feed.tube c is provided with a screw-threaded portion e' adapted to be
screwed into the bearing of a journal, or other part to be lubricated.
'
In my improved lubricator, the lubricant, which is compressed by the screwing
down of the cylinder or chamber a upon the screw d, is guided to, and forced through
the holes e into the hollow stem or feed-tube c, through which it passes to the journal
or other part to be lubricated. By reason of the concave shape of the upper surface
of the piston the pressure is relieved around the periphery of the same, and I am
therefore enabled to dispense with the use of packing or other means for forming a
tight joint around the said piston. This is an important advantage as compared with
other lubricators of the same kind or class in which packing is used, as there is less
friction and consequently the cylinder or chamber can be more easily turned to force
the lubricant through the holes e and through the hollow stem or feed tube c.
My improved lubricator can, moreover, be easily made and at a low cost.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed as communicated to me by my
foreign correspondent I wish it understood that I claim :-
The improved lubricator constructed and arranged to operate substantially as
hereinbefore described.
S on day of October 1009.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicant.