AN IMPROVED STEAM TRAP.OR APPARATUS FOR ALLOWING THE ESCAPE OF WATER AND AIR FROM PIPES, VESSELS, OR CHAMBERS HEATED BY STEAM
Year: 1858

page_text: LETTERS PATENT to Colin Mather, of Salford, in the County of Lan-
caster, Machinist, for the Invention of "AN IMPROVED STEAM TRAP.OR
APPARATUS FOR ALLOWING THE ESCAPE OF WATER AND AIR FROM PIPES,
VESSELS, OR CHAMBERS HEATED BY STEAM."
Sealed the 25th January 1859, and dated the 25th November 1858.
PROVISIONAL SPECIFICATION left by the said Colin Mather at the
Office of the Commissioners of Patents, with his Petition, on the 25th
November 1858.
I, COLIN MATHER, of Salford, in the County of Lancaster, Machinist, do
hereby declare the nature of the Invention for "AN IMPROVED STEAM TRAP
OR APPARATUS FOR ALLOWING THE ESCAPE OF WATER AND AIR FROM PIPES, VESSELS,
OR CHAMBERS HEATED BY STEAM," to be as follows:-
This Invention has for its object an improved steam trap or apparatus for
allowing the escape of water and air from pipes, vessels, or chambers. heated
by steam. For this purpose I affix to the end of a pipe a valve, which, when
the pipe is heated by steain, is kept closed by a weighted lever carried by a
standard mounted on the pipe; but when any water accumulates in the pipe,
the decrease in the temperature contracts the pipe, and causes a short arm on
the weighted lever to come against an adjustable stop, whereby. the weighted.

page_text: lever is raised and the water allowed to escape, but as soon as steam passes
through the pipe, the pipe again expands, and moves the short arm of the
weighted lever away from the stop, and allows the lever to close the valve.
The valve also allows air to escape when steam is first admitted into the pipes,
vessels, or chambers, after they have been allowed to cool. This valve also
acts as a safety valve, so that steam may escape if it is at a greater pressure than
desired in the steam nines.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Colin Mather in the Great Seal Patent Office on the
25th May 1859.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, COLIN
MATHER, of Salford, in the County of Lancaster, Machinist, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-fifth day of November, in the year of our Lord
One thousand eight hundred and fifty-eight, in the twenty-second year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me, the
said Colin Mather, Her special licence that I, the said Colin Mather, my
executors, administrators, and assigns, or such others as-I, the said Colin
Mather, 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 "AN IMPROVED STEAM
TRAP OR APPARATUS FOR ALLOWING THE ESCAPE OF WATER AND AIR FROM PIPES,
VESSELS, OR CHAMBERS HEATED BY STEAM," upon the condition (amongst others)
that I, the said Colin Mather, my executors or administrators, by an instru-
ment in writing under my, or their, or one of their hands and seals, 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 Colin Mather, 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:-

page_text: first admitted into the pipes, vessels, or chambers, after that they have been
allowed to cool. The valve c also acts as a safety valve, so that steam may
escape if it is at a greater pressure than desired in the pipes..
In witness whereof, I, the said Colin Mather, have hereunto set my hand
and seal, this Twelfth day of May, in the year of our Lord One
thousand eight hundred and fifty-nine.
Witness,
ROB³. MCGILL,
of Moscow.
COLIN MATHER. (L.S.)