IMPROVEMENTS IN APPARATUS OR APPLIANCES FOR LUBRICATING BEARINGS."
Year: 1881

page_text: LETTERS PATENT to Hans Reisert, of Cologne, in the Kingdom of Prussia,
Germany, for an Invention of "IMPROVEMENTS IN APPARATUS OR APPLIANCES
FOR LUBRICATING BEARINGS."
PROVISIONAL SPECIFICATION left by the said Hans Reisert at the Office
of the Commissioners of Patents on the 29th December 1881.
HANS REISERT of Cologne in the Kingdom of Prussia, Germany.
MENTS IN APPARATUS OR APPLIANCES FOR LUBRICATING BEARINGS."
" IMPROVE-
According to this Invention apparatus for supplying semi liquid or viscous
lubricants to bearings is constructed as follows;-A tapering receptacle of circular
section, being larger at the lower than at the upper end, has fitted into it a piston
having a flange or packing of leather or other flexible material the edge of which
is presented downwards, while to the top of the piston is attached a cylindrical
chamber or hollow stem that can be loaded with weights for forcing the piston
downwards, and that passes up through a cap closing the upper end of the
receptacle. The lower end of the receptacle is secured in a detachable manner, by
preference by means of a screw thread, to a disc or socket forming the base thereof
and having a central passage terminating in a screw nozzle by which it is screwed
to the bearing. The receptacle being unscrewed from its base, and the piston,
drawn back to its upper end, it is filled with the semi liquid or viscous lubricant
and is then fixed on its base again, whereupon the piston being loaded to the
requisite degree, it will force the lubricant down through the passage in the base on
to the bearing, the pressure of the piston on the lubricant causing the flexible
flange of the piston to expand against the sides of the receptacle so as to form a
tight packing. Owing to the tapering form of the receptacle the piston will move
with more friction while in the upper smaller part thereof than while in the larger
lower part and thus the tendency of the lubricant to pass more quickly from the
receptacle when this is full than when it is partly empty will be counteracted, and
the supply rendered uniform. Instead of loading the hollow stem or chamber of
the piston with weights as described, it may be formed with an external screw
thread working through a female thread on the cover, so that by turning round
the stem at definite intervals to a definite extent either by hand or automatically
by any known means, an accurate uniform supply of the lubricant may be effected.
With this latter arrangement it is not necessary to make the receptacle of tapering
form.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Hans Reisert in the Great Seal Patent Office on the 19th June
1882.
" IMPROVE-
HANS REISERT of Cologne in the Kingdom of Prussia, Germany.
MENTS IN APPARATUS OR APPLIANCES FOR LUBRICATING BEARINGS."
According to this Invention apparatus for supplying semi-liquid or viscous
lubricants to bearings constructed as follows:-A tapering receptacle of circular
section, being larger at the lower that at the upper end, has fitted into it a piston
having a flange or packing of leather or other flexible material the edge of which
is presented downwards, while to the top of the piston is attached a cylindrical
chamber or hollow stem that can be loaded with weights for forcing the piston
downwards, and that passes up through a cap closing the upper end of the
receptacle. The lower end of the receptacle is secured in a detachable manner, by
preference by means of a screw thread, to a disc or socket forming the base thereof
and having a central passage terminating in a screw-nozzle by which it is screwed
to the bearing. The receptacle being unscrewed from its base, and the piston
drawn back to its upper end, it is filled with the semi-liquid or viscous lubricant
and is then fixed on its base again, whereupon, the piston being loaded to the
requisite degree, it will force the lubricant down through the passage_in_the_base-
-on-to-the-bearing, the pressure of the piston on the lubricant causing the flexible
flange of the piston to expand against the sides of the receptace so as to form a
tight packing. Owing to the tapering form of the receptacle, the piston will
move with more friction while in the upper smaller part thereof than while in the
larger lower part and thus the tendency of the lubricant to pass more quickly from
the receptacle when this is full than when it is partly empty will be counteracted,
and the supply rendered uniform. Instead of loading the hollow stem or chamber
of the piston with weights as described, it may be formed with an external screw
thrend working through a female thread on the cover, so that by turning round
the stem at definite intervals to a definite extent either by hand or automatically
by any known means, an accurate uniform supply of the lubricant may be effected.
With this latter arrangement it is not necessary to make the receptacle of tapering
form.
DESCRIPTION OF THE DRAWINGS.
Fig. 1 shews a vertical section of a lubricating apparatus constructed according
to the first herein described arrangement. The tapering receptacle A is screwed
on to the base D having the outlet for the lubricant. Within the vessel A is the
piston M formed with a cup leather and having a chamber or box K on its upper
Bide closed by a cover and serving to receive shot or other weights for loading
the piston so as to cause it to descend slowly and force the lubricant out of the
receptacle. The taper form of the latter causes the piston to descend more freely
as it approaches the lower part and thus to counteract the tendency of the
lubricant to flow off more slowly at that time than when the receptacle is full by
which means a more or less perfectly uniform flow is insured.
The pressure
expands the soft cup leather against the sides of the receptacle and thus prevents
the lubricant from escaping past it. L is a cap fixed on the top of the receptacle
and serving to guide the piston in its descent.
Fig. 2 shews a part elevation and part section of the second above-described
construction. In this case the chamber K instead of being loaded, has a screw
thread formed upon it and screws through the cap L which is formed with a
female thread. The chamber K and consequently the piston M being screwed

page_text: downwards a certain distance at certain intervals of time a periodical supply of
an accurately uniform quantity of lubricant can by this means be conveyed to the
bearing.
Having thus described the nature of my Invention and in what manner the same
is to be performed, I claim :-
First. Constructing apparatus for conveying semi-liquid or viscous lubricants
to bearings with a receptacle for the lubricant tapering in diameter from the lower
to the upper end and containing a loaded piston having a cup leather or otherwise
expansible packing, substantially as herein described with reference to Fig. 1 of the
Drawings.
Second. Constructing apparatus for conveying semi-liquid or viscous lubricants
to bearings with a receptacle for the lubricant containing a piston that is moved
downwards from time to time by screw action, substantially as herein described
with reference to Fig. 2 of the Drawings.
In witness whereof I the said Hans Reisert have hereunto set my hand and
seal this Twelfth day of June in the year of our Lord One thousand eight
hundred and eighty-two.
HANS REISERT. (L.S.)