IMPROVEMENTS IN THE CONSTRUCTION OF ARMOUR-PLATED SHIPS, AND IN CEMENTS OR COMPOSITIONS FOR UNITING IRON TO IRON AND FOR UNITING OTHER SUBSTANCES, WHICH COMPOSITIONS MAY ALSO BE USED FOR CAULKING AND FOR COATING SHIP'S BOTTOMS
Year: 1862

page_text: PROVISIONAL SPECIFICATION left by John Charles Brant at the Office
of the Commissioners of Patents, with his Petition, on the 14th May
1862.
I, JOHN CHARLES BRANT, of 69, Forston Street, City Road Basin, in the
County of Middlesex, do hereby declare the nature of the Invention for
"IMPROVEMENTS IN THE CONSTRUCTION OF ARMOUR-PLATED SHIPS, AND IN CEMENTS OR
COMPOSITIONS FOR UNITING IRON TO IRON AND FOR UNITING OTHER SUBSTANCES,
WHICH COMPOSITIONS MAY ALSO BE USED FOR CAULKING AND FOR COATING SHIP'S
BOTTOMS," to be as follows:-
This Invention has for its object "Improvements in the Construction of
Armour-plated Ships, and in Cements or Compositions for Uniting Iron to
Iron, and for Uniting other Substances, which Compositions may also be used
for Caulking and for Coating Ship's Bottoms."
In manufacturing cements according to this Invention, I combine man-
ganese or magnetic oxide of iron with oil of turpentine or any other essential
oil, and add to it Swedish or other pitch and gutta percha; resins and resinous
gums may also be added. I prefer to take one part of magnetic oxide of iron
or manganese, and make it into a stiff paste with oil of turpentine or any other
essential oil; I then put into an iron pot 2 parts of Swedish pitch, and heat it
over a fire, and mix in the oxide with it; I then gradually add to it one part
or more, if desired, of pure gutta percha cut into small pieces; the whole is
then brought to a boil, and is kept constantly stirred till it is well mixed

page_text: together; the mixture is then removed from the fire, and is kept stirred until
nearly cold; it is then poured on to plates previously covered with water,
and when set, it is fit for use. In employing this cement for uniting iron to
timber or any other material, I first warm some of the cement in a suitable
vessel, and then with a warm iron spatula spread a thin coat over the wood or
other material; the iron to be united to it is warmed over a fire or other-
wise, and a piece of the cement is rubbed over it, and when the plate is well
covered, I apply it to the timber and hold the two firmly together by bolts and
nuts, or otherwise. When using the compound for covering ships' bottoms
I heat the hull of the vessel and rub over it a good coat of the cement, and
when nearly hard I, by preference, rub in equal parts of the red magnetic oxide
of iron and orpiment or red arsenic with drying oil.
The improvements in armour-coated ships consist in preventing water
from getting between the armour plates and the outer skin of the vessel, by
uniting the back of the armour plates to the skin by the cement above
described.
The Invention also consists in placing a layer of cork, or a layer of lead, or
a layer of cork together with a layer of lead between the skin of the vessel
and the back of the armour plates, and when I employ a layer of lead, I prefer
to form ribs or channels on the surface of the lead, and also when employing
such layers at the back of the armour plates I, by preference, prevent any
water getting between the armour plates and the vessel by means of the
cement above described.
LONDON:
Printed by GEORGE EDWARD EYRE and WILLIAM SPOTTISWOODE,
Printers to the Queen's most Excellent Majesty. 1862.
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