IMPROVEMENTS IN COOLING OR QUENCHING THE LINING TUBES FOR ARTILLERY, AND OTHER TUBES
Year: 1883

page_text: LETTERS LAINI To Sydney rit of Sutton in the County of Surrey for an
Invention of "IMPROVEMENTS IN COOLING OR QUENCHING THE LINING TUBES
FOR ARTILLERY, AND OTHER TUBES" communicated to him from abroad by
Henri Harmet of St Etienne in the Republic of France
.
(Void by reason of the Patentee having neglected to file a Specification in
pursuance of the conditions of the Letters Patent.)
PROVISIONAL SPECIFICATION left by the said Sydney Pitt at the Office
of the Commissioners of Patents on the 6th July 1883.
"
com-
SYDNEY PITT of Sutton in the County of Surrey " IMPROVEMENTS IN COOLING
OR QUENCHING THE LINING TUBES FOR ARTILLERY, AND OTHER TUBES
municated to him from abroad by Henri Harmet of St Etienne in the Republic of
France
This Invention has for its object to obtain very regular central cooling by water
of the lining tubes of artillery and other tubes.
By arrangements herein described the lining tube heated to a red heat is instantly
transformed into a water course through which an energetic current can be made
to pass, without any risk of wetting the exterior surface which should remain as
long as possible at the red heat.
This very simple arrangement is as follows:-C, D, E shows the end of a pipe
containing water under pressure and from which a vertical jet regulated by the
stop cock R can be thrown.
The pipe terminates in a conical nozzle so formed as to present at a, an exterior
diameter less than the interior diameter of the tube to be quenched and at b, a
larger diameter. The cock R, being closed the red hot tube suspended from a crane
is brought over C, and lowered vertically until it rests upon the conical part. The
tube having been previously turned at its lower part fits exactly upon the cone C,
and this is sufficient to form a perfectly tight joint.

page_text: To collect the water which it is intended to make circulate through the interior
of the heated tube a tube T, P, M, has been provided; it terminates in a cone C¹,
similar to C. This tube is brought down upon the turned upper end of the heated
lining tube and forms a tight joint as at the bottom. The cock R, may then be
opened full; the water under pressure mounts rapidly in the heated lining tube,
it comes into contact with the interior at every point and passes out by the
tube T, P, M, which leads it away. Thus the interior of the lining tube is
throughly quenched whilst the exterior is protected from contact with water.
An analogous arrangement may be applied to quench tubes in an horizontal
instead of a vertical position and it is possible in this way to quench a tube
internally without removing it from the furnace.
In short this process consists not simply in sprinkling the interior of a heated
tube with a greater or less number of jets of water but in transforming the hot
tube into an actual water conduit through which water is made to flow. The
heated tube can be regarded as a section of a water main connected up by special
perfectly water tight joints so that the whole of the water flowing in the main
traverses the interior of the hot tube without any risk of the exterior being
moistened, the joints being sufficient to confine the water notwithstanding the high
pressure within.