IMPROVEMENTS IN LUBRI- CATING THE PISTONS AND VALVES OF STEAM Exames
Year: 1857

page_text: LETTERS PATENT to James Milnes, of Bradford, in the County of York,
Engineer, and Frederick William Mowbray, of Bradford, in the same
County, Civil Engineer, for the Invention of "IMPROVEMENTS IN LUBRI-
CATING THE PISTONS AND VALVES OF STEAM Exames"
PROVISIONAL SPECIFICATION left by the said James Milnes and
Frederick William Mowbray at the Office of the Commissioners of
Patents, with their Petition, on the 4th April 1857.
We, JAMES MILNES, of Bradford, in the County of York, Engineer, and
FREDERICK WILLIAM MOWBRAY, of Bradford, in the same County, Civil
Engineer, do hereby declare the nature of the said Invention for "IMPROVE-
MENTS IN LUBRICATING THE PISTONS AND VALVES OF STEAM ENGINES," to be as
follows:-
The improvements consist in fixing on the pipe, near the throttle valve, a
ease containing tallow, through which a small piston is moved by the action
of the engine or otherwise. In this piston is a small hole, so that when it
is in one position of its motion the hole is in the tallow, and when it moves
to another it carries with it in the hole a supply of tallow into the pipe.
The steam then blows the tallow, melted by the heat, into the cylinder, thereby
lubricating the piston and valves.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said James William Mowbray in the Great Seal Patent Office
on the 3rd October 1857.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, JAMES
MILNES, of Bradford, in the County of York, Engineer, and FREDERICK
WILLIAM MOWBRAY, of Bradford, in the same County, Civil Engineer, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fourth day of April, in the year of our Lord One
thousand eight hundred and fifty-seven, in the twentieth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto us, the said
James Milnes and Frederick William Mowbray, Her special licence that
we, the said James Milnes and Frederick William Mowbray, our executors,
administrators, and assigns, or such others as we, the said James Milnes and
Frederick William Mowbray, our 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 "IMPROVE-
MENTS IN LUBRICATING THE PISTONS AND VALVES OF STEAM ENGINES," upon the
condition (amongst others) that we, the said James Milnes and Frederick
William Mowbray, our executors or administrators, by an instrument in
writing under our or their hands and seals, or under the hand and seal of one
of us or them, 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 we, the said James Milnes and Frederick William
Mowbray, do hereby declare the nature of the said Invention, and in what
manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement thereof, that is to say:-
The improvements consist in fixing on the pipe near the throttle valve a
a case containing tallow, through which a small piston is moved by the action
of the engine or otherwise. In this piston is a small hole, so that when it
is in one position of its motion the hole is in the tallow, and when it moves
to another it carries with it in the hole a supply of tallow into the pipe.
The steam then blows the tallow, melted by the heat, into the cylinder, thereby
lubricating the piston and valves.

page_text: a is the steam supply pipe; and b, a throttle, or it may be other suitable
supply valve therein; c is the case containing the lubricating matter, through
which works the piston d. The upper end is connected by a link e to the
lever f, which turns upon a fixed centre of motion g, and is at its other end,
by means of a connecting link h, connected to a rod i, operated by the valve
arm or by other suitable means; but we prefer that the piston d have motion
given to it at each stroke of the piston of the engine. is a hole in the
d
piston d, and it is so placed that in the motion of the piston d it will at one
time be in the case c to receive a supply of lubricating matter, and at another
time be within the pipe a to deliver that lubricating matter, which will then
by the action of the steam be blown into the cylinder and parts to lubricate
the piston and valves; j is a reservoir for water, through which the lower
end of the piston d moves; and there is another hole de, by which in the
motion of that piston d a small quantity of water may be alternately taken
up and delivered into the pipe a to assist the operation when high-dried steam
is used. are stuffing boxes or packers.
Having thus described the nature of our said Invention, we would have
it understood that what we claim is, the method of lubricating the pistons
and valves of steam engines substantially as explained.
In witness whereof, we, the said James Milnes & Frederick William
Mowbray, have hereunto set our hands and seals, this First day of
October, in the year of our Lord One thousand eight hundred and
fifty-seven.
JAMES MILNES.
(L.S.)
FREDERICK WILLIAM MOWBRAY. (L.S.)
30 Witness,
ADOLPH PFEILSCHMIDT.