IMPROVEMENTS IN LUBRICATORS
Year: 1879

page_text: LETTERS PATENT to John Blake, of the Oxford Street Works, Accrington, in
the County of Lancaster, Engineer, for the Invention of "IMPROVEMENTS IN
LUBRICATORS"
Sealed the 24th June 1879, and dated the 7th January 1879.
PROVISIONAL SPECIFICATION left by the said John Blake at the Office of
the Commissioners of Patents on the 7th January 1879.
JOHN BLAKE, of the Oxford Street Works, Accrington, in the County of Lan-
caster, Engineer. "IMPROVEMENTS IN LUBRICATORS.'
My Invention is particularly applicable to the lubricators known as displacement
lubricators, and consists, firstly, in forming the lubricator cover and lever in one
piece, such cover being hinged at one side in such a manner that the said hinge can
be easily raised or lowered by a screw or otherwise, in order to keep that side of
the cover tight upon its seat, while the opposite side is kept tight by a nut and
screw, which screw also works upon a hinge.
My Invention consists, secondly, in the use of a sliding or revolving valve
placed at or near the top of the tube, which admits the steam into the lubricator
and conveys the lubricant into the cylinder or other part of the engine to bo
lubricated.
These improvements may also be applied to other lubricators.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said John Blake in the Great Seal Patent Office on the 4th July
1879.
JOHN BLAKE, of the Oxford Street Works, Accrington, in the County of Lan-
caster, Engineer. "IMPROVEMENTS IN LUBRICATORS.'
My Invention is particularly applicable to the lubricators known as displacement
lubricators, and it consists, firstly, in forming the lubricator cover and lever in one
piece, such cover being hinged at one sido in such a manner that the said hinge can
be easily raised or lowered by a screw or otherwise, in order to keep that side of
the cover tight upon its seat, while the opposite side is kept tight by a nut and
screw, which screw also works upon a hinge. My Invention consists, secondly, in
the use of a sliding or revolving valve placed at or near the top of the tube, which
admits the steam into the lubricator, and conveys the lubricant into the cylinder or
other part of the engine to be lubricated. These improvements may also be applied
to other lubricators.
And in order that my Invention may be fully understood and readily carried
into operation, I will proceed to describe the accompanying Sheet of Drawings.
Fig. 1 is a sectional elevation of my improved lubricator; Fig. 2, a front view of
part of the same; Fig. 3 is an elevation of the lubricator with the lid open; and
Fig. 4 represents a revolving valve. a is the body of the lubricator, the lower end
of which is screwed on to the tap b, at the lower end of which is a screw for
securing the lubricator to the cylinder or other article to be lubricated. At one
side of the body a is a snug c, through which passes the screw d, the upper end of
which forms the hinge for the cover e, which is ground to fit the seating on the top
of the body to make a steam tight joint. The scrow & has two lock nuts, by which
the hinge can be raised or lowered to keep the cover tight upon its seating. At
the other sido of the body a is the snug f, which serves as a hinge for the lower
end of the scrow g, which passes through an open slot in the lever e', which is cast
with the cover e. The upper end of the screw g is provided with a handle and
screw nut h, by which the cover is held down on its seating.
Within the body of the lubricator is the tube i, at or near the top of which is
the valve j, shewn best in Fig. 2; or a revolving valve j¹, shewn in Fig. 4, may be
used. This valve is hinged to the top of the tube, and can be moved sideways, so
as to increase or reduce the opening up which the steam passes into the lubricator,
and down which the lubricant passes into the cylinder or other part of the engine
to be lubricated.
The mode of operation is as follows:-The lubricator is filled with oil, tallow, or
other lubricant. When the tap bis opened the steam rushes up the tube i through
the valve into the body of the lubricator, where it condenses, forming water,
which gravitates to the bottom of the lubricator, displacing the lubricant by raising
it up to the valve j; the lubricant then passes down the tube i into the cylinder or
other part to be lubricated. The quantity of lubricant to be discharged is regulated
by the valve j, best shewn in Fig. 2, which can be opened or closed to any extent,
and fixed in the required position by the screw; or I use a revolving valve j', as
shewn in Fig. 4, to answer the same purpose.
I wish it to be observed that my improvements may be applied either in whole
or in part to other lubricators.
Having thus stated the nature of my Invention, and described the manner of per-
forming the same, I declare that I claim,-
First. The general combination and arrangement of parts forming an improved
lubricator, as shewn and described.
Secondly. Casting the cover and the lever of lubricators in one piece, as shown

page_text: and described; and Thirdly. The improved valves j and j¹, which slide, or hinge, or
revolve, as shown and described.
In witness whereof, I, the said John Blake, have hereunto set my hand and
seal, this Third day of July, One thousand eight hundred and seventy nine.
JOHN BLAKE. (L.S.)