Improvements in Lubricators.
Year: 1890

page_text: Date of Application, 27th Mar., 1890
Complete Specifcation Left, 27th Dec.. 1890-Accepted, 7th Feb. 1891
PROVISIONAL SPECIFICATION.
Improvements in Lubricators.
I, JAMES ALEXANDER DAVIDSON of Elm Villa, Crimble Street, Leeds in the
County of York, Oil Merchant, do hereby declare the nature of this invention to
be as follows:-
Our improvements consist in constructing a lubricator wherein semi-liquid
lubricants are employed, such lubricator being applicable to engines and machinery
generally, and so arranged that it will operate automatically in any position or at
any angle.
For the above purpose I employ a cylinder closed at the top, the lower end of
such cylinder screwing into a cup through which the lubricant passes to the
machinery. In the centre of the closed top is screwed a hollow adjusting screw,
and through this a spindle is passed, attached to a piston within the cylinder.
The lower end of the piston rod close to the piston is screwed, so that it can be
drawn outwards carrying the piston with it, and fixed in any position required
within the cylinder by screwing it into a nut within the hollow adjusting screw.
At the lower end of the adjusting screw and within the cylinder is attached a
circular plate, and between this plate and the piston, on the piston rod, is provided
a taper spiral spring so constructed that when compressed by closing the piston
on the plate, the spring lies flat on the face of such plate and can be held there by
screwing the piston rod into the adjusting screw, and whilst in this position the
cylinder can be screwed off the cup, turned upside down and filled with semi-liquid
lubricant, after which it may be returned into position in the cup, the piston
released by unscrewing the piston rod from the adjusting screw, which sets the
spring at liberty and with its pressure behind the piston forces the lubricant through
the opening in the bottom of the cup.
After the spring has expanded to its full extent, the adjusting screw can be
screwed downwards and the spring again compressed as above stated, and on the
piston being again released the spring operates again as aforesaid, forcing the
piston down to the bottom of the cylinder and emptying such cylinder thereby of
the lubricant.
Dated this 27th day of March 1890
J. W. HARDING,
Agent for the Applicant
COMPLETE SPECIFICATION.
Improvements in Lubricators.
I, JAMES ALEXANDER DAVIDSON of Elm Villa, Crimble Street, Leeds in the
County of York, Oil 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 improvements consist in constructing a lubricator wherein semi-liquid
lubricants are employed, such lubricator being applicable to engines and machinery
generally, and so arranged that it will operate automatically in any position or at
any angle.
In the accompanying drawings Fig. 1 is a transverse section and Fig. 2 a
perspective view.
For the above purpose I employ a cylinder A closed at the top by a cover B,
the lower end of such cylinder screwing into a cup C through which the lubricant
TDS21

page_text: passes to the machinery. In the centre of the closed top or cover B, is screwed a
hollow adjusting screw D, and through this a spindle E is passed attached to a
piston F within the cylinder A.
The lower end E' of the piston rod E is screwed, so that it can be drawn outwards
carrying the piston with it, and fixed in any position required within the cylinder
by screwing it into a nut G within the hollow adjusting screw D.
At the lower end of the adjusting screw D and within the cylinder A is attached
a circular plate H, and between this plate and the piston, on the piston rod E is
provided a taper spiral spring J, so constructed that when compressed by closing
the piston F on the plate H, the spring J lies flat on the face of such plate and can
be held there by screwing the piston rod E into the adjusting screw D, and whilst
in this position the cylinder A can be screwed off the cup C, turned upside down
and filled with semi-liquid lubricant, after which it may be returned into position
in the cup, the piston F released by unscrewing the piston rod E from the adjusting
screw D, which sets the spring J at liberty and with its pressure behind the piston
forces the lubricant through the opening K in the bottom of the cup C.
After the spring has expanded to its full extent, the adjusting screw D can be
screwed downwards and the spring J again compressed as above stated, and on the
piston F being again released the spring operates again as aforesaid, forcing the
piston down to the bottom of the cylinder and emptying such cylinder thereby of
the lubricant.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
The combination of the various parts forming the lubricator, all arranged and
operating substantially as and for purposes herein set forth.
Dated this 27th day of December 1890.
J. W. HARDING,
Agent for the Applicant.