AN IMPROVED ANTI-FOULING AND PRESERVATIVE COMPOSITION FOR IRON SHIPS' BOTTOMS AND OTHER SUBMERGED OR EXPOSED IRON STRUCTURES
Year: 1878

page_text: LETTERS PATENT to Archibald McMillan, of No. 10, West Bank Terrace,
Hillhead, Glasgow, in the Kingdom of Great Britain, for the Invention of "AN
IMPROVED ANTI-FOULING AND PRESERVATIVE COMPOSITION FOR IRON SHIPS'
BOTTOMS AND OTHER SUBMERGED OR EXPOSED IRON STRUCTURES."
Sealed the 18th March 1879, and dated the 20th September 1878.
PROVISIONAL SPECIFICATION left by the said Archibald McMillan at the
Office of the Commissioners of Patents on the 20th September 1878.
ARCHIBALD MCMILLAN, of No. 10, West Bank Terrace, Hillhead, Glasgow, in the
Kingdom of Great Britain. "AN IMPROVED ANTI-FOULING AND PRESERVATIVE
COMPOSITION FOR IRON SHIPS' BOTTOMS AND OTHER SUBMERGED OR EXPOSED IRON
STRUCTURES.”
This Invention consists of an improved composition for preventing the fouling of
iron ships' bottoms, and also for preserving the same or any other submerged iron
structures, and for protecting and preserving ironwork exposed to the action of the
atmosphere.
This improved composition is compounded of the following substances in the
proportions thereto annexed, calculated by weight, namely:-
No. 1. Shellac
No. 2. Methylated spirits
No. 3. Rosin
No. 4. Turpentine
No. 5. Paraffin
No. 6. Linseed oil (boiled)
No. 7. Rosin spirits
No. 8. Sulphur
.No. 9. Bisulphide of arsenic
No. 10. Bisulphide of mercury
No. 11. Arseniate of copper
No. 12. Arsenite of copper
No. 13. Oxide of iron
No. 14. White arsenic
ور
و"
-
14 parts
89
"
-
11
11
11
"
14
"
11
"
"
14
"
44
"
14
"
-
14
"
44
"

page_text: These substances are incorporated together in the above proportions in the
following manner, viz. :-
No. 1 is dissolved in No. 2, then No. 3 is dissolved in No. 4 under a gentle heat,
and No. 5 is added as soon as No. 3 is completely dissolved. The products of Nos.
1 and 2, and Nos. 3, 4, and 5, are then mixed together and Numbers 6 and 7 added
thereto. Lastly, the solids Nos. 8 to 14 inclusive are mixed together in a dry
condition and added to the liquid formed by the union of Nos. 1 to 7, and the whole
is well stirred until the mass is thoroughly incorporated. The composition is then
poured into casks and is ready for use.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Archibald McMillan in the Great Seal Patent Office on the 20th
March 1879.
ARCHIBALD MCMILLAN, of No. 10, West Bank Terrace, Hillhead, Glasgow, in the
Kingdom of Great Britain. "AN IMPROVED ANTI-FOULING AND PRESERVATIVE
COMPOSITION FOR IRON SHIPS' BOTTOMS AND OTHER SUBMERGED OR EXPOSED IRON
STRUCTURES."
My Invention consists of an improved composition for preventing the fouling of
iron ships' bottoms, and also for preserving the same or any other submerged iron
structures, and for protecting and preserving ironwork exposed to the action of the
atmosphere.
The method of compounding and the ingredients and quantities of which my com-
position consists are substantially as herein-after described, and though it must be
understood that slight variations may be made without departing from my Inven-
tion, nevertheless the following ingredients in the proportion set opposite to them
respectively and calculated by weight are those from which I have obtained the
best results in actual practice.
No. 1. Shellac
No. 2. Methylated spirits
No. 3. Rosin
No. 4. American turpentine
No. 5. Paraffin (dry)
No. 6. Linseed oil (boiled)
No. 7. Rosin spirits
No. 8. Sulphur (flowers of)
No. 9. Bisulphide of arsenic
No. 10. Bisulphide of mercury
No. 11. Arseniate of copper
No. 12. Arsenite of copper
No. 13. Oxide of iron
No 14 White amanis
-
-
-
32 parts
85
"
-
14
15
"
2
>>
23
"
15
"
2
"
25
"
5
"
70
O
222222
These substances are incorporated together in the following manner, viz.:-
No. 1 is dissolved in No. 2, then No. 3 is dissolved in No. 4, and No. 5 is added as
soon as No. 3 is completely dissolved. The products of Nos. 1 and 2, and Nos. 3, 4, and
5, are then mixed together and Nos. 6 and 7 added thereto. Lastly, the solids Nos. 8
to 14 inclusive, having been first reduced to a fine powder, are carefully mixed
together in a dry condition and added to the liquid formed by the union of Nos. 1
to 7 inclusive. The whole is then carefully stirred until the mass is thoroughly
incorporated and no sediment rémains. These operations may be performed either
with the materials kept at a gentle heat or at the ordinary temperature of the air
only, but the materials combine more readily if kept slightly warm. The
mixing being completely effected the composition is poured into casks and is ready
for use.
The above then is the mode of carrying my said Invention into effect, and what I
claim as my Invention to be protected by the herein-before in part recited Letters
Patent is, the improved anti-fouling and preservative composition for iron ships' bot-
toms and other submerged or exposed iron structures, composed of the above ingredients
in the proportions and incorporated together substantially as above set forth, and I

page_text: specially claim as an essential part of my Invention the application of the ingre-
dients numbered 8, 9, 10, 11, and 12, to the manufacture of anti-fouling and pre-
servative compositions.
In witness whereof, I, the said Archibald McMillan, have hereunto set my
hand and seal, this Twentieth day of March, in the year of our Lord One
thousand eight hundred and seventy-nine.
147
ARCHIBALD MCMILLAN. (L.S.)
127