Better Steering and Working of the same.
Year: 1886

page_text: www
10 соб дррисаюто
Better Steering and Working of the same.
тот CHHO
I LEWIS PIERS FAIRBANKS of Dartmouth in the County of Halifax in the
Province of Nova Scotia, Dominion of Canada Master Mariner now residing at The
Langham Hotel Portland Place London in the County of Middlesex do hereby
declare the nature of my invention for AN IMPROVED APPLICATION OF THE SCREW
PROPELLOR FOR OR TO SHIPS AND BOATS AND FOR THE BETTER STEERING AND
WORKING THE SAME, and in what manner the same is to be performed, to be par-
ticularly described and ascertained in and by the following statement:-
My Invention relates to the employment below the bottom of the vessel of one
or more pontoons provided with tanks for the admission of water arranged parallel
to the keel and carrying a crank-shaft at any desired angle longitudinally which at
the ends are provided with propeller screws whereby the same is below the bottom
of the vessel and operated by the steam engine within the hull through the bottom
of the vessel.
Fig. 1 is a longitudinal vertical section of a hull shewing the propellers and shaft
with pontoon submerged to the bottom of a vessel, and attached thereto also the
rudder extension. Fig. 2 is a tranverse vertical section of the same. Fig. 3 is a
top view of the pontoon and its shape detached from the hull.
A is the hull of a vessel which may be double-ended B is a pontoon tapering at
both ends through which passes longitudinally a double crank shaft (C) the cranks
enclosed by bulkheads (DD) amidships the shaft at both ends is provided with a
screw propeller and is operated by connecting rods (F) from a steam engine whereby
the vessel is propelled. The pontoon is secured to the bottom of the vessel by
screw bolts (G) passing through kelsons (H) or by any other suitable means and
which bolts may if desired run through to the deck of the vessel for manipulation
without disturbing the cargo. The pontoon is primarily adjusted in position by
pilot pointed bolts (I) having a rope or chain (J) passing through a hollow pillar (K)
to the deck and entering a hole or socket in the bottom of the vessel by which the
pontoon is drawn under the bottom of the vessel by suitable adjusting ropes or
chains

page_text: The bottom of the vessel is provided with a hatchway (L) through which the
connecting rods (F) pass to the crank shaft the deck of the pontoon being open
between the bulkheads (D D) The pontoon is removeable by detaching the screws
and drawing it to the surface of the water from whence it may be placed on deck
or towed alongside Fig. 2 shews one pontoon released therefrom by loosing the
fastenings both pontoons being on opposite sides of the kelson.
For the purpose of steering my vessel I employ by preference the rudder shown
in figure 1. but the vessel can also be steered by the propellers themselves.
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed I declare that what
I claim is
1st A pontoon or pontoons (B) carrying a propeller shaft (C) having screw pro-
pellers (E) and attached to the outside of the vessel by screw bolts (G) or other
means for the purpose set forth.
2nd A longitudinal propelling shaft or shafts (C) which may be set at any
desired angle provided with a screw, propeller or propellers (E) at one or both ends
of each shaft below the bottom of the vessel (A) as set forth for the purpose
described.
3rd A shipping and unshipping propeller shaft placed under and supported from
the bottom of the vessel and provided with a propelling screw or screws (E) as set
forth,
Deted this thirteenth day of January 1886.