AN IMPROVEMENT IN THE MAKING AND MANUFACTURING OF METALLIC COCKS FOR DRAWING OFF LIQUIDS
Year: 1827

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, we, JOSEPH
HALL and THOMAS HALL, his Son, both of Leeds, in the County of York,
Braziers and Brassfounders, send greeting.
WHEREAS His present Majesty King George the Fourth, in and by
His Letters Patent under the Great Seal of Great Britain, bearing date at
Westminster, the Eleventh day of October last, for Himself, His heirs and
successors, did give and grant unto us, our exors, adñors, and assigns, His
especial licence, full power, sole privilege and authority, that we, the said
Joseph Hall and Thomas Hall, our exors, adiñors, and assigns, and every of
them, by ourselves and themselves, or by our or their deputy or deputies,...
servants or agents, or such others as we, the said Joseph Hall and Thomas Hall,.
our exors, admors, or assigns, should at any time agree with, and. no others,
from time to time and at all times thereafter during the term of years therein
expressed, should and lawfully might make, use, exercise, and vend, within
England, Wales, and the Town of Berwick-upon-Tweed, our Invention of
"AN IMPROVEMENT IN THE MAKING AND MANUFACTURING OF METALLIC COCKS FOR
DRAWING OFF LIQUIDS;" in which said Letters Patent there is contained a
proviso, obliging us, the said Joseph Hall and Thomas Hall, or one of us, by
an instrument in writing under our hands and seals, or under the hand and seal
of one of us, particularly to describe and ascertain the nature of our said
Invention, and in what manner the same is to be performed, and to cause the
same to be inrolled in His Majesty's High Court of Chancery within two
calendar months next and immediately after the date of the said recited Letters

page_text: Patent, as in and by the same, reference being thereto had, will more fully
appear.
NOW KNOW YE, that in compliance with the said proviso, we, the said
Joseph Hall and Thomas Hall, do hereby describe and ascertain the nature of
our said Invention, and in what manner the same is to be performed, by the
following description, that is to say:
Instead of casting the cocks of brass or iron according to the common prac-
tice hitherto in use, we make or cast them of lead or a composition of lead and
antimony, or of lead and some other metal, in the proportion of one ounce of
antimony or three ounces of zinc to one pound of lead, a little more or less,
according to the hardness of the lead made use of; and those parts of the
cylinder and piston which come in contact with each other when the cocks
complete are made of brass or bell metal, or a composition of hard metals.
The whole of this facing, bushing, or covering is so fastened or united by
tinning and soldering as to become one substance with the cylinder and piston,
not liable to break nor easily out of repair. The piston and cylinder are made
and fitted to each other as cocks generally are.
In witness whereof, we have hereunto set our hands and seals; the Twenty-
fourth day of November, in the year of our Lord One thousand eight
hundred and twenty-seven.
AND BE IT REMEMBERED, that, on the Twenty-fourth day, of..Novem
ber, in the year of our Lord .1827, the aforesaid Joseph, Hall and Thomas
Hall came before our said Lord, the King in His Chancery, and acknowledged;
the Specification aforesaid, and all and every. thing, therein contained and
specified, in. form above written. And also, the Specification aforesaid was
stamped according to the tenor of the Statute, made for that purpose.
Inrolled the Seventh day of December, in the year of our Lord One
thousand eight hundred and twenty-seven.