Improvements in Sheathing Ships and other Vessels.
Year: 1895

page_text: Date of Application, 28th Mar., 1895
Complete Specification Left, 28th May, 1895-Accepted, 6th July, 1895
PROVISIONAL SPECIFICATION.
Improvements in Sheathing Ships and other Vessels.
1. HENRY MICHAEL STEINTHAL of Myra Lodge, Scarborough in the County
of York, Gentleman do hereby declare the nature of this invention to be as
follows:-
My invention has reference to the sheathing of ships and other vessels in such
manner as to prevent barnacles or the like adhering thereto.
Hitherto it has been usual for the purpose of preventing the adhering of barnacles
to coat the bottoms of ships with compositions or materials which it has been thought
will poison the barnacles or the like but inasmuch as the barnacles only adhere to
the ship by their suckers and not by their feeding or breathing organs these poisoning
compositions have not answered the desired purpose.
Now according to my invention I sheath the ship in such a way that barnacles
or the like will not adhere to it at all. For this purpose I employ sheathing which
has a number of pin points or sharp projections on its outer surface. These pin
points or projections lacerate the suckers of the barnacles and thus effectually
prevent them adhering.
The sheathing may consist of leather, india rubber, or other like material with
pin points secured to it, or of other suitable material such for example as
sheet metal with sharp projections on the outer face produced by punching or
otherwise.
Dated this 28th day of March 1895
J. C. MEWBURN & ELLIS,
55 and 56 Chancery Lane, London, Chartered Patent Agents.
Improvements in Sheathing Ships and other Vessels.
I, HENRY MICHAEL STEINTHAL of Myra Lodge, Scarborough in the County
of York, Gentleman, 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 :-
My invention has reference to the sheathing of ships and other vessels in such
manner as to prevent barnacles or the like adhering thereto, and the consequent
fouling of ships' bottoms by sea weed and other vegetable growths, the spores of
which are carried and grow and develop on the shells of the barnacles.
Hitherto for the purpose of preventing the adhering of barnacles it has been
usual to coat the bottoms of ships with compositions or materials which it has
been thought will poison the barnacles or the like but inasmuch as the barnacles
only adhere to the ships by their suckers and not by their feeding or breathing orgaus
these poisoning compositions have not answered the desired purpose.
Now according to my invention I sheath or rough the bottom of the ship in
such a way that barnacles or the like will not adhere to it at all. For this purpose
I employ sheathing which has a number of pin or needle points or sharp projections
on its outer surface. These pin or needle points or projections lacerate the suckers

page_text: of the barnacles when they attempt to attach themselves to the ship's bottom and
thus effectually prevent them adhering.
The sheathing may consist of leather, india rubber, gutta percha, vulcanite,
compressed paper, metal or other like material with pin or needle points projecting
from or secured to it, or of other suitable material such for example as sheet
metal with sharp projections on the outer face produced by punching, chiselling
or otherwise.
In the case of existing ships or vessels to which it may not be found convenient
or thought desirable to fit new sheathing plates, sheets or strips of the nature
above described the bottoms of such ships or vessels can be chiselled so as
to produce upon their surface numerous sharp projections similar to those of a
grater.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
―:
1. The sheathing of ships or other vessels with sheets, strips, plates or other
sheathing having on the outer surface numerous pin or needle points or sharp
projections substantially as hereinbefore described to lacerate the suckers of
barnacles or the like that attempt to attach themselves thereto and thus převent
them adhering.
2. The chiselling or production of numerous sharp projections upon the outer
surface of the sheathing plates of existing ships or vessels, substantially as and for
the purpose hereiùbefore described.
Dated this 28th day of May 1895.
J. C. MEWBURN & ELLIS,
55 and 56 Chancery Lane, London, Chartered Patent Agents.