IMPROVEMENTS IN LUBRICATORS
Year: 1864

page_text: LETTERS PATENT to Joseph Cedric Rivett, of the Prestolee New Mills,
Farnworth, near Bolton, in the County of Lancaster, Cotton Spinner,
for the Invention of "IMPROVEMENTS IN LUBRICATORS"
Sealed the 7th October 1864, and dated the 22nd April 1864.
PROVISIONAL SPECIFICATION left by the said Joseph Cedric Rivett at
the Office of the Commissioners of Patents, with his Petition, on the
22nd April 1864.
I, JOSEPH CEDRIC RIVETT, of the Prestolee New Mills, Farnworth, near
Bolton, in the County of Lancaster, Cotton Spinner, do hereby declare the
nature of the Invention for "IMPROVEMENTS IN LUBRICATORS," to be as
follows:
This Invention has for its object improvements in lubricators, and is
applicable for lubricating the cylinders of steam engines and other parts of
machinery.
For this purpose I employ a cylinder with a piston working within it.
One end of the cylinder is closed with the exception of a small passage fitted
with a valve, and kept in its seat by a spring; the other end of the cylinder
may be open. When the piston is raised the cylinder is filled with the

page_text: lubricating matter, which may be either solid or liquid, and the lubricator is
then set to work by causing the piston by gear, which is set in motion by the
machinery, to descend slowly in the cylinder, and by so doing it presses out
the lubricating material through the valve at the bottom.
The gear which I use for giving motion to the piston is arranged in the
following manner :-The piston is furnished with a piston rod on which a thread
or worm is formed. This passes through a nut which, by a suitable frame, is
held stationary, but it is able to rotate. Attached to the nut is a worm wheel
and this engages with a worm having on its axis a ratchet wheel driven by a
pawl, which receives from the machinery a to-and-fro movement for each stroke
or revolution of the machinery. The valve at the end of the cylinder serves
to prevent the escape of the lubricating material more rapidly than the piston
descends upon it, and when the lubricator is applied to a steam cylinder or in
other situation where it has to force the lubricating material into a chamber
containing steam under pressure; it also serves to prevent the escape back of
steam when the piston is raised for charging the lubricator.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Joseph Cedric Rivett in the Great Seal Patent Office on the
22nd October 1864.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOSEPH
CEDRIC RIVETT, of the Prestolee New Mills, Farnworth, near Bolton, in the
County of Lancaster, Cotton Spinner, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-second day of April, in the year of our Lord
One thousand eight hundred and sixty-four, in the twenty-seventh year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me, the
said Joseph Cedric Rivett, Her special licence that I, the said Joseph Cedric
Rivett, my executors, administrators, and assigns, or such others as I, the said
Joseph Cedric Rivett, 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 Joseph.
Cedric Rivett, my executors or administrators, by an instrument in writing
under my, or their, or one of their hands and seals, should particularly

page_text: 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 Joseph Cedric Rivett, do hereby declare
the nature of the said Invention, and in what manner the same is to be per->
formed, to be particularly described and ascertained in and by the following
statement thereof, that is to say :-
This Invention has for its object improvements in lubricators, and is
applicable for lubricating the cylinders of steam engines and other parts of
machinery.
.
For this purpose I employ a cylinder with a piston working within it. One
end of the cylinder is closed with the exception of a small passage fitted with
a valve kept in its seat by a spring; the other end of the cylinder may be
open. When the piston is raised the cylinder is filled with the lubricating
matter, which may be either solid or liquid, and the lubricator is then set to
work by causing the piston by gear, which is set in motion by the machinery,
to descend slowly in the cylinder, and by so doing it presses out the lubricating
material through the valve at the bottom.
The gear which I use for giving motion to the piston is arranged in the
following manner :-The piston is furnished with a piston rod on which a
thread or worm is formed. This passes through a nut which by a suitable
frame is held stationary, but it is able to rotate. Attached to the nut is a
worm wheel, and this engages with a worm having on its axis a ratchet wheel:
driven by a pawl which receives from the machinery a to-and-fro movement
for each stroke or revolution of the machinery. The valve at the end of the
cylinder serves to prevent the escape of the lubricating material more rapidly.
than the piston descends upon it, and when the lubricator is applied to a
steam cylinder or in other situation where it has to force the lubricating:
material into a chamber containing steam under pressure; it also serves to
prevent the escape back of steam when the piston is raised for charging the
Jubricator.
:
And in order that my said Invention may be most 'fully understood and
readily carried into effect,. I will proceed to describe the Drawings hereunto
annexed.
DESCRIPTION OF THE DRAWINGS.

page_text: it. Through the bottom of the cylinder is an orifice fitted with a valve c
opening outwards, but kept up to its seat by a spiral spring d pressing on its
under side; this spring is coiled around the stem of the valve which is of a
triangular or other convenient form. The spring is contained in a spring:
chamber e formed in a separate piece, and screwed into the bottom of the
cylinder or vessel a; this piece also is arranged to adapt itself by a screw to the
machine to be lubricated at the part where the grease is required to be applied.
To the upper part of the cylinder or vessel a is fixed the frame or bridge f,
at the top of which is a hole truly bored, into which the nut g is fitted; it has,
as is shown, a shoulder at its lower end, and at its upper end a worm wheel h
is fixed, and these between them retain the nut in its place in the frame or
bridge. The worm wheel h gears with a worm i, shown also together with
some other parts at Figure 2. The axis of the worm is carried by a forked
standard f, forming part of the frame or bridge f; k is a ratchet wheel fixed on;
the axis i¹, and is a lever mounted on the same axis loosely so as to be able to
turn thereon. The outer end of the lever is connected with a rod not shown in
the Drawing, which links it to any convenient moving part of the machine to
be lubricated, so that the lever receives an oscillating movement, the length of
which can be adjusted to some extent by traversing the connecting rod along
the slot at the end of the lever. m is a pawl or driver centred on a pin on
the lever, and taking into the teeth of the ratchet wheel k, and thus at each
oscillation of the lever the worm i is partly rotated, and the nut 9 in this
manner receives a slow motion. n is a piston rod with a screw formed upon it;
the screw passes through the nut g, and its foot is reduced in diameter and pivots
in a bridge piece b' on the piston, and has pin-jointed to it the ratchet disc o,
which drops into gear with a similar ratchet disc fixed on the piston, or rises.
out of gear with it when the screw is turned in the direction in which the
teeth incline upwards. The piston 6 consists of two dises drawn towards each.
other by a screw and nut, and with hemp or other packing between them.
This piston fits the cylinder or vessel sufficiently tight to prevent it rotating,
so that the nut in revolving drives the screw and piston downwards, the ratchet
discs clutching the screw to the piston and preventing it turning. The
piston in descending presses out the grease through the valve c, and so the
lubrication goes on until the cylinder or vessel a requires to be refilled. For
this purpose the attendant by turning back the screw by means of the hand.
wheel p at the top of it raises the piston out of the cylinder or vessel a, the
ratchet discs then allowing the screw to turn without the piston; the vessel a
is then refilled, and the screw is turned by the hand wheel so as to lower the
piston again into the cylinder or vessel, the frame or bridge f guiding it into

page_text: its place, and as soon as the piston enters the cylinder or vessel a the ratchet
discs again clutch together and the self-acting delivery of the grease recom-
mences.
In witness whereof, I, the said Joseph Cedric Rivett, have hereunto set
my hand and seal, this Sixth day of October, in the year of our
Lord One thousand eight hundred and sixty-four.
J. C. RIVETT. (L.S.)