IMPROVEMENTS IN GREASE REGULATORS FOR MACHINERY
Year: 1878

page_text: LETTERS PATENT to Claude Nicolas Leroy, Mechanician, of the City of Paris,
in the Republic of France, for the Invention of "IMPROVEMENTS IN GREASE
REGULATORS FOR MACHINERY."
Sealed the 13th December 1878, and dated the 24th June 1878.
PROVISIONAL SPECIFICATION left by the said Claude Nicolas Leroy at
the Office of the Commissioners of Patents on the 24th June 1878.
CLAUDE NICOLAS LEROY, Mechanician, of the City of Paris, in the Republic of
: France. "IMPROVEMENTS IN GREASE REGULATORS FOR MACHINERY."
This Invention consists in the addition to and combination with the usual
lubricator or grease box of a supplementary grease cup, terminating in a tube, the
conductor of the grease to the axle or revolving shaft; the end of this tube is
soldered to a slide tube, to which is attached three or more small tubes soldered-
together and passing upwards into the first-mentioned tube; this slide is regulated
by moving a small shaft attached to it, and so more or less lengthening the tube.
This apparatus is placed inside the ordinary lubricator, and the heat engendered
by the friction of the bearings dissolves the grease, which in a liquid state then
flows through the small tubes on to the revolving piece.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Claude Nicholas Leroy in the Great Seal Patent Office on the 21st
December 1878.
CLAUDE NICOLAS LEROY, Mechanician, of the City of Paris, in the Republic of
France. "IMPROVEMENTS IN GREASE REGULATORS FOR MACHINERY."
The grease regulator, the subject of the present Invention, is an improvement on
and combination with the ordinary lubricators or grease boxes, its object being to
regulate the grease supplied by the simple effect of the motion of the shaft in
contact with the tube conductor of the grease, rendered liquid by the heat.
The grease boxes on whose systein of construction my Invention is founded,
consists of cups, boxes, or recipients for grense; these cups or their equivalents are
usually placed above the point of contact where friction takes place, so as to reduce
it, the heat thereby engendered dissolving the grease, so that it flows naturally on
the piece in motion.
Ainongst the apparatus generally employed, that most in use and to which my 1
Invention relates, comprises the grease box or cup having a lid at the widest end of
a metal tube, which feeds the lubricant to the revolving shaft or axle. With this
lubricator I combine a second cup or metal bell with its tube or grease conductor,
which mathematically regulates the delivery of grease.
In order to clearly demonstrate my principle, I have illustrated the Invention by
the accompanying Drawings.
Fig. 1 being a sectional elevation of my apparatus, Fig. 2 being an elevation
showing the complete lubricator.
Fig. 3 shows the internal cup and slide in detail.
Fig. 4 is a horizontal section of the slide tube.
Fig. 5 shows the internal cup and slide in detail, slightly modified.
Figs. 6 and 7 show the slide tube detached from the cup.
And Figs. 8, 9, 10 are sections of Figs. 5, 6, and 7.
A is the grease cup forming the principal part of the lubricator; it is generally of
glass, crystal, or metal; the advantage of the glass or crystal is that by reason of its a
transparency, the action of the regulator may be observed. The cup is mounted
and solidly fixed at the wide end of the tube B conducting the grease; this tube
supporting the cup is placed above the bearings of machinery in general. The
upper part of the cup is closed by a lid C turning as required, and secured by
means of two claws or catches D, D', which are liberated (by giving 1/2 a turn to the 3
lid) when they reach the groove E, made on each side of the rim of the cup.
That which characterizes my Invention is the novel application of the second
metal cup H, supplied with a tube conductor of the grease, which is placed inside
the first cup A
It is the application and combination of this cup with the ordinary one, in 4
conjunction with its slide tube G and slide I, which forms the regulator. This
small apparatus, independent of the ordinary grease box, is formed of a small copper
cup H, soldered at its lower perforated end to the slide tube G; this tube is pro-
longed by a ring I, forming the slide, and bearing inside a series of tubes J, used for
regulating the flow of the grease; these tubes are soldered one to the other, and are 4
inside the tube G. A small metal rod K serves to move the slide I so as to
lengthen the tube G; This slide being closed, the flow only takes place through the
small tubes, and this flow can be regulated by it.
When opened the flow is stronger, as the tubes are doubly fed consequent on the
heat of the metal cup communicated to the grease, which causes the liquid lubricant &
to flow through the openings M.

page_text: In the modification of the principle exemplified by Figs. 5, 6, 7, 8, 9, 10, the
shaft K forms part of the slide, and comprises the series of small tubes, which all
have a longitudinal opening A, shown Fig. 7, to give passage to the grease. These
openings can be more or less open.
In witness whereof, I, the said Claude Nicolas Leroy, have hereunto set my
hand and seal, this Nineteenth day of December, in the year of our Lord One
thousand eight hundred and seventy-eight,
CLAUDE NICOLAS LEROY. (L.S.)