IMPROVEMENTS IN PRESERVATIVE AND ANTI-FOULING COMPOSITIONS FOR SHIPS BOTTOMS AND OTHER SUBMERGED SURFACES." PROVISIONAL SPECIFICATION
Year: 1882

page_text: LETTERS PATENT to Wilhelm Carl Adolph Holzapfel, of No. 63, Quayside, in
the Borough and County of Newcastle-upon-Tyne, Merchant, for an Invention
of "IMPROVEMENTS IN PRESERVATIVE AND ANTI-FOULING COMPOSITIONS FOR
SHIPS BOTTOMS AND OTHER SUBMERGED SURFACES."
PROVISIONAL SPECIFICATION left by the said Wilhelm Carl Adolph
Holzapfel at the Office of the Commissioners of Patents on the 18th February
1882.
WILHELM CARL ADOLPH HOLZAPFEL of No. 63 Quayside in the Borough and
County of Newcastle upon Tyne Merchant. "IMPROVEMENTS IN PRESERVATIVE
AND ANTI-FOULING COMPOSITIONS FOR SHIPS' BOTTOMS AND OTHER SUBMERGED
SURFACES."
This Invention relates to an improved composition for preventing the fouling
of ships' bottoms and other submerged metal surfaces for preserving them from
corrosion and for protecting them against the adhesion and growth of marine
animal or vegetable life.
I prefer the composition of the following ingredients in the proportions named
which however may be varied according to the trade in which the ships to be
coated may be employed or otherwise according to circumstances.―
1 Bitter aloe
2 Pine varnish
3 Asphalte
4 Copal varnish
5 Black varnish
6 Benzoline or methylated finish
7 Coloring matter
8 Pine oil
9 Litharge
10 Oxide of mercury
5
10
10
-
5
5
25
25
339
1

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Wilhelm Carl Adolph Holzapfel in the Great Seal Patent Office on
the 18th August 1882.
"
WILHELM CARL ADOLPH HOLZAPFEL of No. 63 Quayside in the Borough and
'IMPROVEMENTS IN PRESERVATIVE
County of Newcastle-upon-Tyne, Merchant.
AND ANTI-FOULING COMPOSITIONS FOR SHIPS' BOTTOMS AND OTHER SUBMERGED
SURFACES."
This Invention relates to an improved composition for preventing the fouling of
ships' bottoms and other submerged metal surfaces for preserving them from
corrosion and for protecting them against the adhesion and growth of marine
animal or vegetable life.
The composition is prepared, by preference, with the following ingredients
which yield a composition substantially the same as that set forth in my Provisional
Specification.
The ingredients are employed in the proportions named which however may be
varied according to the trade in which the ships to be coated may be employed or
otherwise according to circumstances.---
1. Bitter aloes
2. Camphor
3. Gum copal
-
Parts.
335
5
The method of mixing these ingredients is as follows:-I take part of No. 7 and
dissolve therein Nos. 1 and 2-I then melt down Nos. 3, 4 and 5 and add to them
first No. 6 and then gradually as the mass cools I add the remaining ingredients
Nos. 8 and 9 being the last to be mixed with the bulk. The whole to be well
stirred for a period of 72 hours when it will be ready for use.
What I claim is, preservative and antifouling compositions substantially as
described for ships' bottoms and other submerged surfaces.
In witness whereof. I the said Wilhelm Carl Adolph Holzapfel have here-
unto set my hand and seal this Seventeenth day of August One thousand
eight hundred and eighty two.
W. C. A. HOLZAPFEL. (L.S.)