IMPROVEMENTS IN LUBRICATORS
Year: 1855

page_text: LETTERS PATENT to George Lowry, of the City of Manchester, Machinist,
for the Invention of "IMPROVEMENTS IN LUBRICATORS."
PROVISIONAL SPECIFICATION left by the said George Lowry at the
Office of the Commissioners of Patents, with his Petition, on the
19th March 1855.
I, GEORGE LOWRY, of the City of Manchester, Machinist, do hereby declare
the nature of the said Invention for "IMPROVEMENTS IN LUBRICATORS" to be
as follows:-
The object of my Invention is to prevent the supply of lubricating material
contained in a revolving plug being discharged on to the article to be lubricated
at every revolution of the said plug. One mode of eflecting this is in forming
an endless screw with two or more threads in each direction on the spindle of
the plug, by which the oil or other lubricating material is supplied from the
receptacle to the journal or other article to be lubricated. Rotary motion is
given to the plug by ratchet wheel or other suitable mechanism, and a pin or
key takes into the threads of the double screw. The effect of the endless screw
is to give a lateral motion to the plug, thereby withdrawing the chamber in

page_text: the plug containing the lubricating material from the opening through which
the same is supplied to the article to be lubricated. By this means the plug
can revolve without taking in or discharging the lubricating material until
the required time.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said George Lowry in the Great Seal Patent Office on the
18th September 1855.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GEORGE
LOWRY, of the City of Manchester, Machinist, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Nineteenth day of March, in the year of our Lord
One thousand eight hundred-and-fifty-five, -in-the eighteenth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said George Lowry, Her special license that I, the said George Lowry, my
executors, administrators, and assigns, or such others as I, the said George
Lowry, my executors, administrators, and assigns, should at any time agree
with, and no others, from time to time and at all times thereafter during
the term therein expressed, should and lawfully might make, use, exercise, and
vend, within the United Kingdom of Great Britain and Ireland, the Channel
Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN LUBRICATORS,"
upon the condition (amongst others) that I, the said George Lowry, by an
instrument in writing under my hand and seal, should particularly describe
and ascertain the nature of the said Invention, and in what manner the same
was to be performed, and cause the same to be filed in the Great Seal Patent
Office within six calendar months next and immediately after the date of
the said Letters Patent.
NOW KNOW YE, that I, the said George Lowry, do hereby declare the
nature of my said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
Specification thereof, reference being had to the accompanying Drawings, that
is to say:
My said, Invention of Improvements,in, Lubricators consists in so constructing
lubricators that the supply of lubricating material contained in a revolving
plug shall not be discharged on the article to be lubricated at every revolution
of the said plug also in improved modes of regulating the quantity of lubri

page_text: cating material in the revolving plugs of lubricators, and of giving motion to
the revolving plugs of lubricators.
I have in the said Drawings given Figures for shewing how my improvements
in lubricators may be constructed, similar parts in each of these Figures being
marked with similar letters of reference.
Figure 1 of the said Drawings is a longitudinal section of one of my improve-
ments in lubricators, and Figure 2 is an elevation of the same. In these views
a is part of a shaft, the journal of which is to be lubricated; 6 is the cap of the
said journal; c is a cup containing the oil or other liquid lubricating material.
This cup is fixed in the box d, in which the plug e fits accurately. The box d
is attached to the cap.6 by means of the hollow screw fand lock nuts g. A
slow rotary motion is given to the pluge by the friction pulley h, which is
covered with a ring of vulcanized india-rubber or other suitable elastic substance
bearing on, the shaft:a. The pulley / revolves on a stud fixed in a swing
lever j, jointed to. the prolongation of the plug e, and to the pulley h is fixed a
pink, which. as the pulley h revolves comes against and imparts motion to the
pulley, which is also covered with a ring of elastic substance; and is fixed to
the prolongation of the plug é. A lateral motion is also given to the plug e by
means of a double-threaded screw made in the body of the plug, and the pin e
taking into; the: said.screw, a recess e is made in the plug e, into which the
lubricating material is received; when the said receśs coincides with the hole
below the cup'c. The mode of operation is as follows: As soon as the lateral
motion of the plug 'e has brought the recess e opposite the hole below the cup c,
a portion of the lubricating material.drops into and fills the said reĉess.: When
the plug has performed half a revolution the lateral motion of the plug has
brought the recess beyond the hole in the hollow screw f; consequently the
lubricating material cannot make its escape from the said: recess, but remains
in it.úntil the plug e has moved laterally to its greatest extent, and been brought
back again, at which. time the recess e coincides with the hole in the screw 'f,
and consequently the lubricating material drops down the said hole on to the
bearing to be lubricated. At the next half revolution of the plug e; the recess
e coincides with the hole below the cupc, and a fresh supply of the lubricating
material is obtained, to be again. dropped on the bearing when the plug has
performed the requisite: number of revolutions. This can be regulated: by
increasing or diminishing. the number of threads. in the double screw. The
plug e may be turned round, as shewn in Figure 3, or by any other suitable
mechanism. To the-shaft a'is attached a cam a; which in revolving moves.the
friction pulley la portion of a revolution; by this arrangement a quicker rotary
motion would be given to the vlug e

page_text: In Figures 4 and 5 I have shewn another of my improvements in lubricators.
a is the shaft to be lubricated; c, the oil cup; d, the box for the plug e, which
is turned slowly round by the iron friction pulley m bearing on the shaft a.
This pulley is fixed to a short shaft n, revolving in a bush projecting from the
swivel piece o, hinged to a prolongation of the plug e. At the other end of
the shaft n is a worm p gearing into a worm wheel q revolving on a stud in the
swivel piece o.
To the face of the wheel 2 is cast or otherwise attached a spiral
projections, taking into the space between the teeth of the spur wheel 2", which
is fixed or cast to the plug e. The lubricating material drops from the cup c
into the recess e², and when the plug e has gone half round, the lubricating
material drops through the hollow screw fon to the journal to be lubricated in
the ordinary manner. As it is very desirable to be able to vary the quantity
of lubricating material supplied at each revolution of the plug, according to the
velocity or other requirements of the journal to be lubricated, I propose to
make the recess in the plug e as shewn in Figure 6. The tail screw t can be
screwed further into, to contract the opening of the recess e, or unscrewed to
enlarge the same, the lock nut t¹ serving as the washer by which the plug is
retained in the box d. Figure 7 represents another arrangement of parts for
effecting the same object. In this instance the screw u is screwed into or
unscrewed to increase or diminish the space for the lubricating material. Other
arrangements might be shewn for effecting the same object, but the foregoing
are sufficient to illustrate this part of my Invention, which consists.in varying
the quantity of lubricating material delivered at every revolution of the plug.
Figures 8 and 9 represent another of my improvements in giving motion to
the plugs of lubricators. The iron friction pulley m bears, as before, on the
shaft a, and to its face is cast or otherwise fixed the spiral projection v, gearing
into and giving motion to the wheel g, which is similar to that shewn in Figures
4 and 5, and imparts motion by the spiral projections to the wheel r fast to
the plug e.
When my improvements are applied to lubricate sliding surfaces,
it is evident that the rotary motion of the plug must be given by a ratchet
wheel or other similar agent.
Having thus described the nature of my Invention, and the manner of
performing the same, I declare that I claim as of my Invention,-
First, constructing lubricators in such wise that the supply of lubricating
material shall not be delivered to the article to be lubricated at every revolution
of the revolving plug.
Secondly, the improvements shewn and described in reference Figures 6
and 7, for regulating the supply of lubricating material delivered by the

page_text: Thirdly, the improvements shewn in Figures 1, 2, and 3, for giving motion
to the plugs of lubricators.
Fourthly, the application of the spiral projection, marked in Figures 8
and 9, for giving motion to the plugs of lubricators.
Fifthly, the swivel piece marked o, in Figures 4, 5, 8, and 9, by means
whereof the iron friction pulley and other parts of the driving apparatus can
adapt themselves to the space between the shaft to be lubricated and the plug
of the lubricator in a line parallel to the said shaft.
In witness whereof, I, the said George Lowry, have hereunto set my
hand and seal, this Tenth day of September, in the year of our Lord
One thousand eight hundred and fifty-five.
Witness,
H. B. BARLOW,
Manchester.
GEO. LOWRY. (L.S.)