IMPROVEMENTS IN LUBRICATORS
Year: 1881

page_text: LETTERS PATENT to Frederik Wolff, of the International Patent Office,
Copenhagen, Denmark, Patent Agent, for an Invention of "IMPROVEMENTS
IN LUBRICATORS." A communication by Christian Mollerup, Dalum Molle, nr.
Odense. Denmark.
PROVISIONAL SPECIFICATION left by the said Frederik Wolff at the Office
of the Commissioners of Patents on the 18th May 1881.
FREDERIK WOLFF, of the International Patent Office, Copenhagen, Denmark,
Patent Agent. "IMPROVEMENTS IN LUBRICATORS." (A communication by
Christian Mollerup, Dalum Molle, nr. Odense, Denmark.)
This Invention has for its object improvements in mechanical lubricators, more
especially adapted for lubricating the cylinders and slide valves of steam engines.
A cylinder is provided with a hollow plunger that works through a stuffing box
at the top of the cylinder. Oil is introduced into the cylinder through a suitable
cup and valve, and is forced from the cylinder by the downward movement of the
plunger through another valve into a pipe leading to the point at which the
lubricant is to be applied. The plunger is forced down by means of a screw
operated by a worm wheel and worm carried by a bracket fixed to the cylinder.
To the axis of the said worm is fixed a toothed wheel, which is operated by a pawl
carried by a lever centred at one end to the said axis, and connected at its free end
by means of an adjustable eye (whereby its stroke can be adjusted) and a wire or
rod to a moving part of the engine to be lubricated, so as to operate the said worm
and screw to the required extent at each stroke of the engine. A collar is fitted to
the lower end of the screw, so that when the plunger is in its lowest position its
upper part rests on the said collar and prevents it descending further, the plunger
revolving with the screw should it continue to be operated. When the lubricant
has been forced out of the cylinder the worm is disconnected from the worm wheel,
its bearing or bearings being moveable for this purpose, and the worm wheel con-
nected to the top of the screw is turned back by means of a handle on it, thereby
raising the plunger; the cock leading from the cylinder is shut, and the cup or
inlet valve opened; thus the cylinder is again filled with oil, and then the worm is
put in gear with its wheel so as to operate for forcing down the plunger, as before
described.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Frederik Wolff in the Great Seal Patent Office on the 29th September
1881.
FREDERIK WOLFF, of the International Patent Office, Copenhagen, Denmark,
Patent Agent. "IMPROVEMENTS IN LUBRICATORS." (A communication by
Christian Mollerup, Dalum Molle, nr. Odense, Denmark.)
This Invention has for its object improvements in mechanical lubricators,
more especially adapted for lubricating the cylinders and slide valves of steam
engines,
Referring to the accompanying Sheet of Drawings, Fig. 1 is an elevation, partly
in section, Fig. 2 a plan, Fig. 3 a central vertical section, and Fig. 4 a detail view
of a lubricator according to this Invention.
The cylinder A is provided with a hollow plunger H that works through a
stuffing box I at the top of the cylinder. Oil is introduced into the cylinder through
the cup and valve B, and is forced from the cylinder by the downward movement
of the plunger through another valve S into a pipe K leading to the point at which
the lubricant is to be applied. The plunger is forced down by means of a screw G
operated by a worm wheel F and worm E carried by a bracket fixed to the cylinder.
To the axis of the said worm is fixed a toothed wheel D, which is operated by a
pawl D' carried by a lever C, centred at one end to the said axis, and connected at
its free end by means of an adjustable eye O (Figs. 1 and 4), whereby its stroke
can be adjusted, and a wire or rod to a moving part of the engine to be lubricated,
with or without the use of intermediate levers, such as shewn in Fig. 5, so as to
operate the said worm and screw to the required extent at each stroke of the
engine. A collar P is fitted to the lower end of the screw G, so what when the
plunger is in its lowest position its upper part rests on the said collar and prevents
it descending further, the plunger revolving with the screw should it continue to be
operated. When the lubricant has been forced out of the cylinder the worm E is
disconnected from the worm wheel F, its bearing or bearings being moveable for
this purpose, and the worm wheel connected to the top of the screw is turned back
by means of a handle J on it, thereby raising the plunger, the cock S leading from
the cylinder is shut, and the cup or inlet valve B opened; the cylinder is again
filled with oil, and the worm is put in gear with its wheel so as to operate for
forcing down the plunger, as before described.
Having described the nature of the said Invention, and the manner in which it
is to be or may be carried into effect, as communicated to me as aforesaid, I would
have it understood that what is claimed is,―
1. The use of a mechanical lubricator having a reservoir and a plunger whereby
lubricant is forced out of the said reservoir, the plunger being gradually fed or
intruded into the reservoir by the action of the engine or machine to be lubricated,
substantially as described.
2. In a mechanical lubricator having a reservoir whence lubricant is gradually
forced by a plunger, as above stated, causing the said plunger to be gradually fed
or intruded into the said reservoir by a screw operated by the means and in manner
substantially as hereinabove described with reference to the Drawings.
3. In a mechanical lubricator having a reservoir whence lubricant is gradually
forced by a plunger, as above stated, causing the lengthwise motion of the plunger

page_text: to be converted into a rotary motion at the end of its acting stroke to prevent
injury to the apparatus, substantially as described and shewn.
4. The improved lubricator, substantially as hereinabove described and illustrated.
In witness whereof, I, the said Frederik Wolff, have hereunto set my hand and
seal, this Twenty fifth day of August, in the year of our Lord One
thousand eight hundred and eighty one.
FREDERIK WOLFF.
(LS.)