IMPROVEMENTS IN LUBRI- CATORS
Year: 1877

page_text: LETTERS PATENT to James Hunt and Thomas Evans Mitton, both of Birmingham,"
in the County of Warwick, for the Invention of "IMPROVEMENTS IN LUBRI-
CATORS"
Sealed the 6th November 1877, and dated the 11th May 1877.
PROVISIONAL SPECIFICATION left by the said James Hunt and Thomas.
Evans Mitton at the Office of the Commissioners of Patents on the 11th May
1877.
JAMES HUNT and THOMAS EVANS MITTON, both of Birmingham, in the County of
Warwick. IMPROVEMENTS IN LUBRICATORS."
65
Our Invention consists of the improvements herein-after described in the con-
struction of parts of lubricators.
We will now describe our Invention. We adopt the ordinary metallic receptacle
used for containing the lubricating liquid or compound of any desired shape or
pattern, to the upper portion of which we arrange the lid or cover, and secured by.
means of the screw or any other suitable manner; and in this lid or cover we
construct a circular plug, the upper portion passing through the said lid and working
freely in either direction; the lower part of the said plug is tapered, and when the
lid is applied to the receptacle the plug finds a corresponding bearing upon the edge
of the said receptacle and perfectly secure or sound.
The advantage aimed at by this Invention is, the adopting of the tapered plug,
secured by the screw, being continuous in its wear, preventing a leakage, and
economical. Hitherto a joint has been made of any soft metal. by forcing the lid or
cover therein by screwing or keying, or in other cases the ordinary steam packing
has been employed, but leakage always follows.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said James Hunt and Thomas Evans Mitton in the Great Seal Patent
Office on the 10th November 1877.
JAMES HUNT and THOMAS EVANS MITTON, both of Birmingham, in the County of
Warwick. IMPROVEMENTS IN LUBRICATORS."
"
Our Invention consists of the improvements. herein-after described in the con-
struction of parts of lubricators.
We will now describe our Invention. We adopt the ordinary metallic receptacle
used for containing the lubricating liquid or compound of any desired shape or
pattern, to the upper portion of which we arrange the lid or, cover, and secured by
means of the screw or any other suitable manner; and in this lid or cover we
construct a circular plug, the upper portion passing through the said lid and working
freely in either direction; the lower part of the said plug is tapered, and when the
lid is applied to the receptacle the plug finds a corresponding bearing upon the edge
of the said receptacle and is perfectly secure or sound.
The advantage airmed at by this Invention is, the adopting of the tapered plug,
secured by the screw, being continuous in its wear, preventing, a leakage, and
economical. Hitherto a joint has been made of any soft metal by forcing the lid or
cover therein, by screwing or keying, or in other cases the ordinary steam packing
has been employed, but leakage always follows.
We will now proceed to describe our Invention more fully in detail, reference
being had to the Drawings hereunto annexed and to the letters marked thereon.
Fig. 1 represents our Invention in its entirety; Fig. 2 is a sectional view of the
same.
"a
"
" is the body or receptacle for containing the lubricating liquid or compound;
"b," "b," are projecting arms for imparting the power. required in screwing the
lid
" с upon its body "a"; we may here remark that this lid is screwed down, one
thread or worm.excepting, and this is allowed for the wear it may receive; "d" is the.
plug fitting upon the shoulder or check "e," but working in either desired direction by
the action of the knob "f" at the base of this plug is a tapered form, finding its
bearing upon a corresponding form indicated at "g," being the upper and the interior
part of "a."
Having thus described the nature and object of our said Invention, we would
observe in conclusion that we do not restrict ourselves entirely to the above descrip-
tion, as various modifications may be made without departing from the features of
our said Invention; but what we do claim and desire to be secured to us by the
herein-before in part recited Letters Patent is, the improvements in lubricators,"
substantially as herein-before described and shewn on the accompanying Drawings,
or any mere modification thereof.
In witness whereof, we, the said James Hunt and Thomas Evans Mitton, have
hereunto set our hands and seals, this Eighth day of November, in the
year of our Lord One thousand eight hundred and seventy-seven.
JAMES HUNT.
(L.S.)
THOMAS EVANS MITTON. (L.S.)