Year: 1888

page_text: Date of Application; 21st July, 1888-
Complete Specification Left, 23rd Apr., 1889
Complete Specification Accepted, 1st June, 1889
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same.
I, ROBERT TURNBULL, of 14 Beaconsfield Street, Newcastle upon Tyne, Northumber-
land, Naval Architect do hereby declare the nature of this invention to be as
follows:-
The object of this invention is to prevent corrosion in the Holds and ballast tanks of
iron and steel vessels.
In the first place, I apply a coating of Spirit of Nartha or Paraffin, Trinidad Pitch,
Marine or Fish Glue, mixed eld and put on with a brush, or a Shellac Varnish may
be used in some cases.
I then put on a coating of Asphalte tempered with Stockholm and Coal Tar, Marine
Glue, and Parafine Wax, these are heated together and poured on to the plating hot,
and spread over the angle irons and rivet heads with a wooden tool; this composition
forms an elastic coating. In some cases a brush may be used.
I then spread over the entire surface a coating of Calico which adheres firmly to the
first coating.
I then spread over the Calico a coating of hot Asphalte, Coal Tar and Portland
Cement mixed several degrees harder than the above coating, this also adheres firmly
to the Calico and makes a good wearing surface.
Other thin material may be used such as Linen, or even paper of a tough quality
strong enough to prevent the two coatings running into one which would destroy the
elascticity of the first coating.
H. GARDNER,
166, Fleet Street, London,
Agent for the said Robert Turnbull.

page_text: COMPLETE SPECIFICATION.
Improvements in Anti-corrosive Compositions and Materials for
Ships and other Structures and in the Method of Applying the
same.
I, ROBERT TURNBULL of 14 Beaconsfield Street, Newcastle upon Tyne, Northumber-
land, Naval Architect, do hereby declare the nature of this invention and in what
manner the same is to be performed to be particularly described and ascertained in
and by the following statement :-
The object of this invention is to prevent corrosion in the holds and ballast tanks of
iron and steel-vessels.
In the first place, I apply a coating of Paraffin, or Spirits of Naptha, Trinidad
Pitch, Marine or Fish Glue, mixed cold and put on with a brush. In certain cases
and in lieu of the above, employ as the preliminary coating, Shellac Varnish, or a
Varnish composed of Stockholm Pitch and Solvent Naptha. I then put on a coating
of Asphalte tempered with Stockholm Pitch and Coal Tar, Marine Glue and Paraffin
Wax. These are heated together and poured on to the plating hot and spread over
the angle iron.and rivet heads with a wooden tool, or in some cases a brush may be
used. This composition forms an elastic coating, I do not limit myself to exact
quantities but I use preferably 65 parts of Asphalte to 20 parts of Stockholm Pitch,
10 parts of Coal Tar, 3 parts of Marine Glue, and 2 parts of Paraffin Wax.
I then spread over the entire surface a coating of Calico, or other thin material
such as Linen, or even Paper of a tough.quality strong enough to prevent the second
and the subsequent fourth, coatings.from running into one. This will adhere firmly to
the second coating.
I then spread over the Calico or other, material, a coating of hot Asphalte, Coal Tar
and Portland Cement mixed several. degrees harder than the second mentioned
coating. This adheres firmly to the Calico or other material and makes a good
wearing surface.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
The improved anti-corrosive compositions and materials, for coating, ships and, other
structures, consisting of,
1. A preliminary coating or varnish of Paraffin, or Spirits of Naptha, Trinidad
Pitch, Marine or Fish Glue; or in substitution thereof, a coating of Shellac Varnish,
or a Varnish composed of. Stockholm Pitch and Solvent Naptha, as set forth.
2. An elastic coating composed of Asphalte, Stockholm Pitch, Coal Tar, Marine
Glue and Paraffin Wax, as set forth.
3. A layer of Calico or other like-material,-as-set forth.

page_text: 4. As a wearing surface, a coating of Asphalte, Coal Tar, and Portland Cement, as
set forth.
5. The mode of applying Anti-corrosive compositions to ships and other structures
by the combined processes of a preliminary coating, a second elastic coating, a third
coating or layer of Calico, or other material as a partition for preventing the 2nd and
4th coatings from running together, and a final coating as a wearing surface,
substantially as hereinbefore described.
The 21st day of April 1889.
H. GARDNER,
166, Fleet Street, London,
Agent for the said Robert Turnbull.