Improvements in and connected with Yachts and other Boats or Vessels.
Year: 1890

page_text: Date of Application, 29th Oct., 1890
Complete Specification Left, 29th July, 1891-Accepted, 26th Sept., 1891
PROVISIONAL SPECIFICATION.
Improvements in and connected with Yachts and other Boats or
Vessels.
"
We, CHARLES PELHAM Junior, of 36, Pier Road, Littlehampton, in the
County of Sussex, Captain of Yacht, and GEORGE SITTON, of 16, Eversholt
Street, St. Pancras, in the County of London, Engineer, do hereby declare the
nature of this invention to be as follows:-
Our invention relates to yachts and other boats designed to carry a centre board
and has for its object to provide means whereby such boats may be handled or
manoeuvred more readily and expeditiously than heretofore.
According to our invention the centre board instead of being arranged in a rigid
position relatively to the keel as heretofore, is made movable so that it can be
adjusted to counteract any tendency which a boat may have to drift when under
sail.
In practice the said centre board is advantageously secured at its rearward end
to a vertical shaft extending through the bottom of the boat so that cranks or other
suitable appliances may be connected with the said shaft for operating the said
centre board. I also advantageously form a V-shaped recess in the bottom of the
boat which allows a certain amount of movement to the said centre board whilst
preventing it from moving too far in either direction.
Dated the 29th day of October 1890.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicants.
COMPLETE SPECIFICATION.
Improvements in and connected with Yachts and other Boats or
Vessels.
We, CHARLES PELHAM Junior, of 36, Pier Road, Littlehampton, in the
County of Sussex, Captain of Yacht, and GEORGE SITTOx, of 16 Eversholt
Street, St. Pancras, in the County of London, 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 :-
Our invention relates to yachts and other boats designed to carry a centre-board,
and has for its object to provide means 'whereby such boats may be handled or
manoeuvred more readily and expeditiously than heretofore.
According to our invention the centre-board, instead of being fixed relatively
to the keel, is, made movable in a lateral direction so that it can be adjusted to
counteract any tendency which a boat may have to drift when under sail.
In practice the said centre-board is advantageously arranged in connection with
a crank and passed through a V-shaped recess in the bottom of the boat which
allows a certain amount of movement to the said centre-board whilst preventing it
from moving too far in either direction.
To enable our invention to be fully understood we will describe the same with
reference to the accompanying drawing, in which:-
Figure 1 is a sectional side elevation of a boat having our improved centre-board
applied thereto; and,
Figure 2 is a plan of the same.
a indicates the centre-board, and b a chamber or well in which the same is
located and through the bottom of which it projects, the said chamber or well

page_text: extending sufficiently high in the boat to prevent the entrance of water through
the same into the said boat. As shown in the drawing the after end of this chamber
or well is narrowed or pointed, that is to say, it is made somewhat of a V-shape, so
that the rear edge of the centre-board is practically stationary therein. Any suit-
able means may be employed for altering the angle of the centre-board relatively
to the keel.
In the drawing we have represented the centre-board as provided at its upper
part with a hinged portion c, to which a rod d having a T-headed handle e is
secured. This hinged portion e constitutes a kind of crank, which, when the handle
is turned, serves to move the centre-board to one side or the other, for instance,
from the central position shewn in full lines in Figure 2 to the position indicated
by the dotted line in the said figure.
As shewn in the drawing the said centre-board is suspended by means of the
rodd passing through a cross-bar g, and by a rod having a T-head, the said
rods d and being pivotted at i, i. This arrangement is specially applicable in
small boats for the reason that the centre-board can be readily pulled up out of the
water or inboard, or entirely removed from the boat, and the rods folded down to
occupy as little space as possible.
It will be noticed that the keel of the boat is widened or expanded from each end
towards the chamber or well b, as indicated by the dotted lines k k in Figure 2
in order that as little resistance as possible shall be offered to the movement of
the boat.
The operation of the centre-board will be readily understood from the following:--
Assume the boat to be under sail and the wind to be blowing in the direction of the
arrow 1, Figure 2, the natural tendency of the boat to drift in the same direction
would, under ordinary circumstances, cause the boat to travel, say, for instance,
in the direction of the arrow 2, Figure 2. If, however, the centre-board is properly
adjusted, for instance, as indicated by the line, Figure 2, this drifting can be
counteracted so that the boat will move in the line of its keel.
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 :
1. The use in combination with a yacht or other boat of a centre-board adapted
to be moved laterally as described for the purpose specified.
:
2. The combination with a yacht or other boat of a centre-board arranged
substantially in the manner hereinbefore described and illustrated in the accom-
panying drawing.
to 20th day of July
TOUT.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicants.