Improvements in the Means of Lubricating the Submerged Portion of Ships and other similar Vessels.
Year: 1895

page_text: Date of Application, 12th Mar., 1895
Complete Specification Left, 11th Jan., 1896-Accepted, 12th Mar.,
1896
PROVISIONAL SPECIFICATION.
Improvements in the Means of Lubricating the Submerged Portion
of Ships and other similar Vessels.
We, GEORGE AINSWORTH, of Midland Buildings, Bradford, in the County of
York, Manufacturer, and JAMES ARNOTT, of 70, Harlow Terrace, Harrogate, in
the aforesaid county, Mechanical Engineer, do hereby declare the nature of this
invention to be as follows:-
It is now acknowledged that by lubricating the bottoms, or submerged portions,
of ships and other similar vessels that the skin friction is considerably reduced and
also that the application of a suitable lubricant tends to preserve the bottom and
keep it clean or free from barnacles or the like. The object of this invention is to
provide efficient and economical means of feeding the lubricant to the submerged
portion.
For this purpose we fit a perforated distributing pipe down the stem or prow of
the vessel and carry it a suitable distance along the bottom. A double perforated
pipe may be employed or it may be bifurcated along the bottom, or it may be fitted
with branches.
The said pipe may be supplied with lubricant in the manner described in the
Specification of Letters Patent No. 6760 granted to us on the 30th day of March
A.D. 1893, and it may be protected by the perforated stem plate described in that
Specification or by another suitable device.
Dated this 11th day of March 1895.
DRACUP & NOWELL,
Bradford, Agents.
Improvements in the Means of Lubricating the Submerged Portion
of Ships and other similar Vessels.
We, GEORGE AINSWORTH, of Midland Buildings, Bradford, in the County of
York, Manufacturer, and JAMES ARNOTT, of 70, Harlow Terrace, Harrogate, in
the aforesaid county, Engineer, 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 :-
It is now acknowledged that by lubricating the bottoms or submerged portions,
of ships and other similar vessels that the skin friction is considerably reduced and
also that the application of a suitable lubricant tends to preserve the bottom and
keep it clean or free from barnacles or the like. The object of the invention is to
provide efficient and economical means of feeding the oil to the submerged
portion.
For this purpose we fit a perforated distributing pipe down the stem or prow of
the vessel and carry it a suitable distance along the bottom. To protect the pipe
and preserve it from external violence we fit it inside the vessel as close to the
outer plates or shell as the structure of the vessel will conveniently permit. The
perforations in the distributing pipe have each a delivery duct that is to say a
Price R71

page_text: short piece of pipe of small calibre attached to them which ducts are screwed or
otherwise passed through the plate or shell of the vessel and open outwards.
The distributing pipe may be supplied with oil in the manner described in the
Specification of Letters Patent No. 6760 granted to us on the 30th day of
March 1893.
We find with a single distributing pipe. having the delivery ducts opening outside
the stem below the water line and continued along the bottom more or less to the
stern that an excessive supply of oil is not necessary to obtain an increased speed
as by this means the parts of the vessel exposed to the greatest pressure and
friction are lubricated. But to more thoroughly lubricate the whole of the
submerged part we prefer to use a distributing pipe of greater capacity and fit
branch distributing pipes to it. Or the distributing pipe may be bifurcated to form
two distributing pipes. The delivery ducts may pass straight through the plates
at right angles to the face or they may be alternately inclined on either side so as
to have a greater tendency to distribute the lubricant externally over the
submerged part of the vessel.
The improvements are particularly applicable to torpedo boats and other vessels
designed to travel at high speeds.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is:
The arrangement herein described for lubricating vessels, consisting of an
internal oil distributing pipe or pipes provided with perforations or ducts opening
outward and adapted to distribute the oil externally over the submerged portion of
the vessel.
Dated this 10th day of January 1896.
DRACUP & NOWELL,
Bradford, Patent Agents.