Year: 1897

page_text: Date of Application, 11th Feb., 1897
Complete Specification Left, 11th Nov., 1897-Accepted, 22nd Jan., 1898
I, JOHN MANSON RAMSAY, of the Portland Forge Company, Kilmarnock, in the
County of Ayr, Forge Master, do hereby declare the nature of this Invention
to be as follows:-
This invention has for its object to simplify the construction and lessen the
cost of manufacture of wrought iron or steel rudders such as are used in sailing
ships and steamers.
To that end in lieu of employing as is usual a strong frame or skeleton of forged
iron or steel or of cast steel and riveting a wrought steel or iron plate or plates
into or upon such frame I build a strengthening frame upon a wrought steel or
iron plate or plates constituting the foundation of the rudder blade, the parts so
built up being composed in general of upright and cross stays and the whole being
secured to the rudder top or stock in any ordinary way. Or I may attach the
hinge devices direct to the plate or plates so that the latter may serve as a rudder
blade without any strengthening frame.
The strengthening frame or frames when used may be formed in one piece or
in a number of separate pieces, the parts being secured together either in direct
contact or through intervening parts or through the plate by means of riveting
or otherwise. Or they may be secured together only indirectly by all being
attached to the same plate or plates.
I may further modify the construction bly so forming the framing that it may
be built or fastened together before attachment to the plate or plates.
1008
WALLACE FAIRWEATHER,
Of the Firm of Cruikshank & Fairweather,
Chartered Patent Agents,
Saint Vincent Street, Glasgow, Agent for the Applicant.
I, JOHN MANSON RAMSAY, of the Portland Forge Company, Kilmarnock, in the
County of Ayr, Forge Master, 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:-
This invention has for its object to simplify the construction and lessen the

page_text: cost of manufacture of wrought iron or steel rudders such as are used in sailing
ships and steamers.
The invention is illustrated by the accompanying drawings, Figure 1 being
a side elevation, Figure 2 an end elevation and Figure 3 a horizontal section
of one form of the improved rudder. Figures 4, 5, and 6 and 7, 8 and 9, are views
corresponding respectively. to Figures 1, 2 and 3 of two modifications of the
rudder.
In carrying out the Invention in lieu of employing as is usual a strong frame
or skeleton of forged iron or steel or of cast steel and riveting a wrought steel or
iron plate or plates into or upon such frame, I build a strengthening frame A, A¹,
as shewn at Figures 1, 2 and 3, upon a wrought steel or iron plate or plates
constituting the blade of the rudder, a single plate B, being used in this case,
the plate or plates forming the foundation, of the rudder and having the frame
secured to it or them by riveting or otherwise. The parts so built up are com-
posed in general of upright and cross stays, the portion A of the strengthening
frame in this case extending round the entire outer edge of the rudder blade and
the cross stays A¹ extending from the inner edge of the rudder blade to the other
portion of the frame, the whole being secured to the rudder top or stock in any
ordinary way. The hinge devices C may be attached direct to the plate or plates B,
as shewn at Figures 4, 5 and 6, or they may be attached to the plate or plates B
and to the strengthening frame A as shewn at Figures 7, 8 and 9.
The strengthening frame or frames when used may be formed in one piece or
in a number of separate pieces, the parts being secured together either in direct
contact or through intervening parts or through the plate by means of riveting
or otherwise. Or they may be secured together only indirectly by all being
attached to the same plate or plates as shewn at Figures 4, 5 and 6.
I may further modify the construction, as shewn at Figures 7, 8 and 9, by so
forming the framing that it may be built or fastened together before attachment
to the plate or plates.
Having now particularly described and ascertained the nature of my said in-
vention, and in what manner the same is to be performed, I declare that what I
claim is:
The improved ships' rudder consisting of a foundation plate or plates to which
the rudder stock and hinge devices are attached and upon which a strengthening
frame may or may not be built substantially as described.
Dated this 10th day of November 1897
WALLACE FAIRWEATHER,
Of the Firm of Cruikshank & Fairweather,
Chartered Patent Agents,
62, Saint Vincent Street, Glasgow, Agent for the Applicant.