IMPROVEMENTS IN THE FLOATS OF PADDLE WHEELS FOR PROPELLING VESSELS AND OTHER BODIES PROVISIONAL SPFICATION
Year: 1883

page_text: LETTERS PATENT to Joseph Stewart of Blackwall in the County of Middlesex
for an Invention of "IMPROVEMENTS IN THE FLOATS OF PADDLE WHEELS
FOR PROPELLING VESSELS AND OTHER BODIES
PROVISIONAL SPECIFICATION left by the said Joseph Stewart at the Office
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of the Commissioners of Patents on the 2nd February 1883.
JOSEPH STEWART of Blackwall in the County of Middlesex
"IMPROVEMENTS
THE FLOATS OF PADDLE WHEELS FOR PROPELLING VESSELS AND OTHER
BODIES
This invention relates to improvements in the form of the Floats of Paddle
Wheels for propelling vessels and other bodies and has for its object as follows
First The stiffening of them without any additional weight or incumbrance
Second The acceleration of the speed of the vessel
Third The diminution of wash of water on the sides or banks of Rivers or
Canals.
The Invention may be described as consisting of entirely dished, bevelled, or
curved edged plates of Iron, Steel or other material, which are intended to give a
leading edge whereby they may enter the water, more easily and with less
resistance while retaining still greater hold when working This improvement or
bevelling may be effected either by hand labour or by means of hydraulic or
other pressure.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Joseph Stewart in the Great Seal Patent Office on the 31st July
IN
1883.
JOSEPH STEWART of Blackwall in the County of Middlesex
IMPROVEMENTS
THE FLOATS OF PADDLE WHEELS FOR PROPELLING VESSELS AND OTHER
BODIES
This Invention relates to improvements in the form of floats of paddle wheels
for propelling vessels and other bodies and has for its object.
First, the production of floats for vessels which shall give greater rigidity and
strength with less weight
Secondly, by offering less obstruction in entering the water and thus giving
greater efficiency to the propelling machinery and consequently greater speed to
the vessel
Thirdly, the reduction of the wash or wake of water both laterally and vertically
and consequently the dimunition of the ordinary slip or loss of power and of the
damage which such wash usually inflicts upon floating bodies or upon the banks
of rivers canals or other narrow channels My invention consists, of forming the
floats which are preferably of metal with curved or dished bevelled edges so as to
form a marginal frame all round the float as clearly represented in the accom-
panying drawings which form part of this specification and in which
Figure I represents a vertical cross section of float with bevelled edges A.
Figure II represents a similar float with curved edges as at B
Figure III represents a part section and describes the manner in which the
floats take the water when working (as at C)
Figure IV represents a plan of a float
Figure V an end view with an arm attached and
Figure VI a horizontal section of the same flont.
It will be understood that size, thickness and material of which the float is
formed will vary with the work which it is intended that it shall do and that the
curve or bevel will be such as to give a leading edge which will enter the water
with but little resistance and retain a strong hold of the same when working
Having now described the features of my Invention and shown how the same
may be practically employed I wish it to be understood that what I claim and
desire to secure by Letters Patent is
The construction and use of floats for propelling
vessels and other bodies substantially as herein
before described and as illustrated in the
Signed, sealed and delivered
in the presence of
HENRY WALKER
West Grove Woodford
Essex
JOSEPH STEWART (L.S.)