Preservative or Protective Composition.
Year: 1885

page_text: Preservative or Protective Composition.
I THOMAS HARRISON of 106 Fenchurch Street in the City of London Asphalte
& Whiting Manufacturer do hereby declare the nature of my Invention for
COATING METALS ESPECIALLY IRON AND STEEL AND WOOD WITH A PRESERVATIVE
OR PROTECTIVE COMPOSITION to be as follows:-
I first take six hundred weights of finely powdered glass and thirteen hundred
weights of finely powdered slate and mix them so that they are thoroughly
incorporated I then after heating twelve hundred weights of Pitch or other
Bituminous matter in a cauldron until it is entirely melted gradually adding the
mixture of powdered glass and slate powder as above and having stirred them
together until perfectly mixed I dip out the material and cast it into sand or iron
moulds containing from half a hundred weight to one hundred weight each or any
other convenient size and weight it is then ready for application by remelting and
is to be applied to the metal after a coating of Black Varnish of the ordinary
make, to any thickness that may be required from the one eighth of an inch
upwards the purposes of this Invention is to prevent the action of any kind of acid
or alkali and also to prevent the oxidation of the metal so treated, I do not bind
myself to use the exact proportions mentioned above but to vary it according to
climate and circumstances generally or make in smaller or larger quantities than
mentioned above but always using the powdered glass and powdered slate mixed
with pitch or Bitumen and thus forming a Bituminous and protective Cement.
Dated this sixth day of Avonst 1885

page_text: Coating Metals, Especially Iron and Steel, and Wood, with a
Preservative or Protective Composition.
I THOMAS HARRISON of 106 Fenchurch Street London E.C. Asphalte and
Whiting Manufacturer do hereby declare the nature of my invention for COATING
METALS ESPECIALLY IRON & STEEL AND WOOD WITH A PRESERVATIVE AND
PROTECTIVE COMPOSITION and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement:―
A Coating for metals especially Iron and Steel also for Wooden Tanks &c
requiring protection from strong acids or Alkalies, I first take 12 cwts or there-
abouts of Coal Tar Pitch or other Bituminous matter heat it in a cauldron until it
is entirely melted and then gradually adding 6 cwts of finely powdered Glass or fine
sand and 13 cwts of finely powdered slate and having stirred them together until
thoroughly incorporated I dip or run out the mixture and cast it into sand or iron
moulds containing from half a hundred weight to one hundred weight each or any
other convenient size and weight it is then ready for application by remelting and
this is to be applied to the surface of the metal or wood work after a coating of
Black Varnish to any thickness that may be required from one sixteenth of an
inch or upwards but it may be laid on even with a less thickness by a brush the
purposes of this invention are to prevent the action of any kind of acid or alkali
and also to prevent the oxidation of the metal so treated.
I do not bind myself to use the exact proportions mentioned above but to vary
it according to climate and circumstances generally or make it in smaller or larger
quantities than mentioned above but always using the powdered Glass and
powdered Slate and or fine sand mixed with Coal Tar pitch or other Bituminous
matter and thus forming a protective Cement-For the Black Varnish I prefer to
use what is commonly known as Green oil with more or less Coal Tar Pitch or
other Bituminous matter if necessary to coat the Iron in the first instance either
with Green oil alone or with a small admixture of Tar or Bitumen to act upon the
Iron or Wooden surface and afterwards with a coating of green oil and spirit with
a greater proportion of Coal Tar Pitch or Bituminous matter to form the base on
which to apply my composition. When necessary I may use as a drier sugar of
lead or common black Varnish with or without crude Naptha or other Mineral
Spirit or material,
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed, I declare that what
I claim is
1. The composition substantially as hereinbefore described.
2. The method of application as hereinbefore stated.