Improvements in Reducing Friction in Ship Propulsion.
Year: 1890

page_text: Date of Application, 18th Sept., 1890
Complete Specification Left, 29th June, 1891-Accepted, 1st Aug., 1891.
PROVISIONAL SPECIFICATION.
Improvements in Reducing Friction in Ship Propulsion.
I RICHARD HUNT of 19 Old Hall Street Liverpool in the County of Lancaster,
Gentleman do hereby declare the nature of this invention to be as follows:-
The object is to facilitate the propulsion of ships and navigable vessels by main-
taining the submerged surface in such condition that resistance to its passage
through the water is reduced.
The invention consists essentially in the application of an emulsive mixture of
oil and water to the submerged surface of the ship or vessel. The mixture is
obtained by centrifugal action and about one part of oil to ninety nine parts of
water answers well.
The mixture is forced between the submerged surface and surrounding medium
through suitably disposed orifices.
Dated the 17th day of September 1890.
>
Per pro J. T. KING,
J. Johnson,
Agent.
COMPLETE SPECIFICATION.
Improvements in Reducing Friction in Ship Propulsion.
I RICHARD HUNT of 19 Old Hall Street Liverpool, in the County of Lancaster,
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 :-
The object is to facilitate the propulsion of ships and navigable vessels by main-
taining the submerged surface in such condition that resistance to its passage
through the water is reduced.
The invention consists essentially in the application of an emulsive or emulsion
like mixture of oil and water to the submerged surface of the ship or vessel. The
mixture is obtained by bringing the oil and water together in the desired pro-
Mixers in which the liquids are
portions in any suitable centrifugal mixture.
ejected from a revolving container through a narrow annular aperture against a
stationary surface answer well. A mixture containing one part of oil to about
ninety nine parts of water answers well, and I have found in practice that even
when there is only about one part of oil to one hundred thousand parts of water
beneficial results are produced.
With a ship of about three thousand tons gross, the use of from one half a
gallon to one gallon of oil an hour will keep the skin smooth.
When paraffin or creosote is used, fouling is prevented and the skin is kept clean,
but these oils should not be used alone but mixed with some animal vegetable or
mineral oil. The mixture is forced by pumps, or the action of specific gravity,-
through orifices at or near the bow and forefoot, so that the mixture may be evenly
distributed over the whole of the submerged surface of the ship or vessel. Pipes
are used to lead the mixture to the orifices, or pipes may be carried through the
ship or vessel and be perforated.

page_text: 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 :-
First. A mixture of oil and water substantially as and for the purpose set
forth.
Second. The application of a mixture of oil and water to the submerged surfaces
of ships and vessels substantially as and for the purpose set forth.
Dated the 17th day of June 1891.
Per pro J. T. KING,
J. Johnson,
Agent.