AN IMPROVED MANUFACTURE OF A COMPOUND FOR PREVENTING THE ESCAPE OF STEAM, GAS, WATER, OR AIR FROM JOINTS OF ENGINES, Boilers, PIPES, AND MACHINERY."
Year: 1881

page_text: LETTERS PATENT to George Tall and John Daddy, both of the Town and
County of the Town of Kingston-upon-Hull, Seed Crushers, for an Invention
of "AN IMPROVED MANUFACTURE OF A COMPOUND FOR PREVENTING THE
ESCAPE OF STEAM, GAS, WATER, OR AIR FROM JOINTS OF ENGINES, Boilers,
PIPES, AND MACHINERY."
PROVISIONAL SPECIFICATION left by the said George Tall and John
Daddy at the Office of the Commissioners of Patents on the 5th April
1881.
GEORGE TALL and JOHN DADDY, both of the Town and County of the Town
"AN IMPROVED MANUFACTURE OF A.
of Kingston upon Hull, Seed Crushers.
COMPOUND FOR PREVENTING THE ESCAPE OF STEAM, GAS, WATER, OR AIR FROM
JOINTS OF ENGINES, BOILERS, PIPES, AND MACHINERY."
We take ordinary brickyard clay, linseed oil, graphite or plumbago, commonly
called or known as black lead, pipe clay, and whitening, in the proportions herein-
after mentioned, that is to say, for 20 lbs. of the said improved compound we take
of ordinary brickyard clay 12 lbs., of linseed oil 2 lbs., of black lead 2 lbs., of pipe
clay 2 lbs., of whitening 2 lbs. The brickyard clay and the pipe clay are dried in
any convenient manner, and the whole of the aforesaid ingredients are then mixed
and ground, together until the same forms a fine powder. When required for use
sufficient water must be added so as to form the mass into a paste, which may
then be applied by any convenient manner to the joints of the engines, boilers,
and machinery which it is desired to render steam tight. We have above
mentioned the proportions of the above ingredients which we have found to give
the best result, but these proportions may be slightly varied.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said George Tall and John Daddy in the Great Seal Patent Office on the
4th October 1881.
GEORGE TALL and JOHN DADDY, of the Town and County of the Town
of Kingston upon Hull, Seed Crushers. AN IMPROVED MANUFACTURE OF A
COMPOUND FOR PREVENTING THE ESCAPE OF STEAM, GAS, WATER, OR AIR FROM
JOINTS OF ENGINES, BOILERS, PIPES, AND MACHINERY."
We take ordinary brickyard clay, linseed oil, graphite or plumbago, commonly
called or known as blacklead, pipe clay, and whitening, in the proportions
hereinafter mentioned, that is to say, for twenty pounds of the said improved
compound we take of ordinary brickyard clay twelve pounds, of linseed oil
two pounds, of blacklead two pounds, of pipe clay two pounds, of whitening
two pounds. The brickyard clay and the pipe clay are dried in any con-
venient manner, and the whole of the aforesaid ingredients are then mixed
and ground together until the same forms a fine powder. When required for use
sufficient water must be added so as to form the mass into a paste, which may
then be applied in any convenient manner to the joints of the engines, boilers,
pipes, or machinery which it is desired to render tight. We have above mentioned
the proportions of the above ingredients which we have found to give the best:
result, but these proportions may be slightly varied.
Having now particularly described and ascertained the nature of the said
Invention, and in what manner the same is to be performed, we hereby declare
that we claim in regard thereto and as compressed within the scope and effect of
our said Letters Patent,-
1. The manufacture, substantially as herein described, of the compound aforesaid,
for the purposes aforesaid.
2. The use, in manner hereinbefore mentioned, of the compound, manufactured
substantially as herein described, for preventing the escape of steam, gas, water, or
air from joints of engines, boilers, pipes, and machinery.
In witness whereof, I, the said George Tall, have hereunto set my hand and
seal, this Fourth day of October, in the year of our Lord One thousand
eight hundred and eighty one.
GEORGE TALL. (L.S.
Signed, sealed, and delivered
by the above named George
Tall, in the presence of
THOS. SMITH CURTIS, Sol.,
Clerk to Messrs. Collyer, Bristow, Withers, & Russell, Solrs.,
4, Bedford Row,
London, W.C.
WILLIAM BROWNE,
Clerk to the said Messrs. Collyer, Bristow, Withers, & Russell.