IMPROVEMENTS IN LUBRICATORS
Year: 1883

page_text: PROVISIONAL SPECIFICATION left by the said Thomas Duff at the Office
of the Commissioners of Patents on the 4th January 1883.
THOMAS DUFF of Upton, in the county of Essex, Engineer "IMPROVEMENTS IN
LUBRICATORS"
This invention relates to improvements in lubricators whereby a saving of oil is
effected, the lubricator may be easily adapted or applied to any ordinary oil cup
and the supply of oil regulated as required.
In carrying out my invention I employ an ordinary oil cup in which I place a
syphon tube, one end of which extends nearly to the bottom of the oil cup; the
other end of the syphon tube extends through the bottom of the cup the lower end
thereof being formed or provided with a cono perforated with a number of holes in
the sides thereof; over this cone screws a female cone, the apex of which is per-
forated and serves to supply the oil to the bearing. A lock nut is provided to fix
the female cone in the position to which it has been adjusted.
By this arrangement, if the oil cup be supplied with oil, the said oil will pass
through the syphon, through the holes in the sides of the cone and out through the
apex of the female cone, and the quantity of oil which passes may be increased or
diminished by unscrewing or screwing up the feinale cone so as to increase or
diminish the space between the male and female cones, or, by screwing up the
female cone sufficiently the supply will be completely stopped. By the employment
of a syphon tube as herein before described the oil supplied will always be clean as
the sediment will remain at the bottom of the cup and therefore cannot pass
through the syphion.
In addition to the great saving of oil effected by the use of my improved
lubricator there is the further advantage that with large bearings where a number
of tubes supply the oil if any part of the bearing should requiro more oil than the
other parts the supply can be effected by regulating the particular tube without
having to feed any oil by hand. The quantity of oil can be increased instantly
when required through any or all of the tubes or the supply may be entirely
shut off.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Thomas Duff in the Great Seal Patent Office on the 2nd July
1883.
THOMAS DUFF, of Upton, in the county of Essex, Engineer
LUBRICATORS
"
"IMPROVEMENTS IN
This invention relates to improvements in lubricators whereby a saving of oil is
effected, the lubricator may be easily adapted or applied to any ordinary oil cup
and the supply of oil regulated as required.
In carrying out my invention I employ an ordinary oil cup in which I place n
syphon tube, one end of which extends nearly to the bottom of the oil cup; the
other end of the syphon tube extends through the bottom of the cup the lower end
thereof being formed or provided with a cone perforated with a number of holes in
the sides thereof; over this cone screws a female cone, the apex of which is per-
forated and serves to supply the oil to the bearing. A lock nut is provided to fix
the female cone in the position to which it has been adjusted.
In order to enable my invention to be fully understood I will proceed to
describe the same by reference to the accompanying drawing in which figure 1, is
an elevation partly in section of a lubricator with four tubes constructed according
to my invention and figure 2, a plan of the same. Similar letters in both figures
represent similar parts.
a, is the oil cup of ordinary construction; b, b, are the syphon tubes; one end of
each syphon tube extends nearly to the bottom of the oil cup a, as shewn; the
other end of each syphon tube b, extends through the bottom of the cup a, and is
connected with a cone d,; e, c, are the perforations in the sides of the cone extending
to the central hole f, thereof; on each of the cones d, screws a female cone g, per-
forated centrally for supplying the oil to the bearing; i, i, lock nuts for fixing the
female cones g, in the position to which they have been adjusted; j, j, couplings
for connecting the cones to the syphon tubes.
By this arrangement, if the oil cup a, be supplied with oil to a level above the
top of the syphons the said oil will pass through the syphons b, b, down through
the cones d, through the holes e, e, in the sides of the cones and out through the
apex of the female cones g, g,; the quantity of oil which passes may be increased
or diminished by unscrewing or screwing up the female cones g. 9, so as to increase
or diminish the space between the male and female cones, or, by screwing up the
female cones g, sufficiently the supply will be completely stopped. By the
employment of syphon tubes as herein before described the oil supplied will always be
clean as the sediment will remain at the bottom of the cup and therefore cannot
pass through the syphon.
In addition to the great saving of oil effected by the use of my improved
lubricator there is the further advantage that with large bearings where a number
of tubes (as shewn in the drawing) supply the oil, if any part of the bearing should
require more oil than the other parts the supply can be effected by regulating the
particular tube without having to feed any oil by hand. The quantity of oil can
be increased instantly when required through any or all of the tubes or the supply
may be entirely shut off
I have described and shewn in the drawing a lubricator with four feeding tubes
or cones but it will be evident that this number may be increased or diminished.
Having thus described my invention and the manner of performing the same I
wish it to be understood that what I claim is :—
Firstly. The improved lubricator arranged and operating substantially as
hereinbefore described and represented in the accompanying drawing.

page_text: Secondly. In a lubricator the combination with a syphon tube of regulating
cones arranged and operating substantially as and for the purposes hereinbefore
described and represented in the accompanying drawing.
In Witness whereof I the said Thomas Duff have hereto set my hand and
seal this twelfth day of June in the year of our Lord one thousand eight
hundred and eighty three
THOMAS DUFF (L.S.)