AN IMPROVED RUDDER ATTACHMENT APPLICABLE TO PLEASURE BOATS AND OTHER SMALL CRAFT
Year: 1884

page_text: .PROVISIONAL SPECIFICATION. -
I WILLIAM JOHNSON of Bridge Road East Molesey Surrey-Watchmaker do
hereby declare the nature of my Invention for "AN IMPROVED RUDDER
ATTACHMENT APPLICABLE TO PLEASURE BOATS AND OTHER SMALL CRAFT" to be
as follows:-
My Invention consists of a plate to be screwed, or otherwise attached to the
boat.
Attached to this plate is a long hollow boss with a trumpet shaped mouth to
receive a pin. Attached to the rudder is a half round plate with a pin to fit easily
into the hollow boss. The advantages of my Invention aro
First That the rudder will lift upon going over rollers or running aground
without detaching itself.
:

page_text: I, WILLIAM JOHNSON Watchmaker Bridge Road East Molesey Surrey do hereby
declare the nature of my Invention for AN IMPROVED RUDDER ATTACHMENT
APPLICABLE TO PLEASURE BOATS AND OTHER SMALL CRAFT and in what manner
the same is to be performed, to be particularly described and ascertained in and by
the following statement:-
The object of my Invention is to furnish an improved rudder attachment for
torpedo boats, rowing boats and other small craft, which, while securely holding
the rudder in position will leave it free to rise without becoming absolutely
unshipped in the event of the rudder coming in contact with the ground thereby
avoiding damage to or loss of the rudder and risk of capsizing the boat. The
attachment of my Invention is further characterized by the facility with which it
can be shipped and unshipped, these operations, with the ordinary attachment,
being sometimes a matter of some difficulty, more especially in the dark and when
the rudder is hard over.
The attachment of my Invention consists of a single long pintle which projects
from the forward edge of the rudder and is received in a corresponding socket
secured to the stern-post of the boat, the said pintle having a head or enlargement.
at its upper end which rests in a countersink in the upper end of the socket. The
pintle is secured to or formed in one with a metal plate or strip which is screwed
or otherwise attached to the rudder, this strip being preferably grooved vertically
to correspond with the external surface of the socket piece with which it is in
contact there being sufficient clearance between the strip or plate and the pintle to
enable the latter to be inserted in the socket.
The Invention is illustrated in the accompanying Drawings in which Figure 1 is
an end view of an ordinary rowing boat with the rudder in position and Figure 21
is a corresponding plan, Figures 3 and 4 are vertical sections of the attachment, the
rudder in Figure 3 being shewn in position while in Figure 4 it is partly raised off
the boat.
Figure 5 is a horizontal section on line 1-1 Figure 3.
a is the rudder, b the yoke and c c the yoke or rudder lines all as usual. d is the
pintle formed in one with or rigidly attached to the curved or half round plate or
strip which is secured to the inner edge of the rudder. e is the socket pieco
which is attached to the stern post of the boat. The pintle has a circular head or
enlargement at its upper part which is received in a countersink in the upper
end of the socket e. The pintle extends downwards and is fitted to pivot freely in
the socket which being of approximately the same length as the pintle affords a
long bearing for the latter, while the contact of the socket with the grooved plate d'
serves to relieve the pintle from strain.
By this construction the rudder can be readily unshipped even when it is hard
over (as indicated in dotted lines in Figure 2) and if it should happen to come into
contact with an obstacle it will lift as indicated in Figure 4 without becoming
absolutely detached or being liable to be broken or damaged.
Having now particularly described and ascertained the nature of the said
Invention and in what manner the same is to be performed, I declare that what
I claim is:
1 A rudder attachment for rowing boats and other small craft consisting of a
single long pintle secured to and extending downwards from the forward odge of
the rudder and a socket on the stern post of the boat adapted to receive the pintle
E

page_text: and bold the rudder in pivotal connection, substantially as herein shown and
described.
2nd The combination with the downwardly projecting pintle d, attached to the
rudder and provided with the head or enlargement d' of the socket piece e fixed to
the storn post of the boat and countersunk at its upper part to form a bearing for
the pintle and permit the same to pivot therein substantially as shewn and
described.
3rd As a means of pivoting a rudder to the stern post of a boat the combination
of a single long pintle secured to the one part to be connected with a socket piece
secured to the other part to be connected substantially as shown and described.
Dated this 6th day of September 1884.