Improvements in Detachable Rudders.
Year: 1897

page_text: This Print is in accordance with the Original Specification as it stands after
Amendment (under Section 11 of the Patents, &c. Act, 1883) as required by
the decision of the Comptroller General of the 2nd day of July 1898.
Date of Application, 26th June, 1897
Complete Specification Left. 29th Dec. 1897-Accented 12th Feb 1808
Date of Application, 26th June, 1897
Complete Specification Left. 29th Dec. 1897-Accented 12th Feb 1808
PROVISIONAL SPECIFICATION.
Improvements in Detachable Rudders.
I, ANDREW ROBERTSON, of the Firm of Matthew Reid & Company, Kilmarnock
Forge, Kilmarnock, in the County of Ayr, Forge Master, do hereby declare the
nature of this invention to be as follows:
This invention which relates to detachable rudders has for its object to simplify
and improve the mode of attaching the top of the rudder blade to the rudder stock.
Under the invention the lower end of the rudder stock is jawed or made with
two vertical side flanges in the space between which is entered the upper end or
stem of the rudder blade, or frame on which the blade is built, the said stem of the
blade being made at its upper end of rectangular cross section to fit the jaw of the
rudder stock. The parts when fitted togethor are secured by bolts passing through
the side flanges and the upper stem of the rudder blade. The jawed part of the
lower end of the rudder stock may be readily forged as part of the rudder stock,
and the cost is lower than with the ordinary means of attachment in which a
separate weld has to be made, whilst the improved construction has the further
advantage that the strain in turning the rudder is taken up by the side flanges and
the rudder may be operated even if the bolts should be loosened.
A vertical groove is or may be formed in the rudder stem to engage the inner
edge of the plate of which the rudder blade is formed.
Dated this 25th day of June 1897.
WALLACE FAIRWEATHER,
Of the Firm of Cruikshank & Fairweather,
Chartered Patent Agents,
, Saint Vincent Street, Glasgow, Agent for the Applicant.
Improvements in Detachable Rudders.
I, ANDREW ROBERTSON, of the Firm of Matthew Reid & Company, Kilmarnock
Forge, 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 which relates to detachable rudders has for its object to simplify
and improve the mode of attaching the top of the rudder blade or its frame to the
rudder stock.

page_text: The invention is illustrated by the accompanying drawings, Figure 1 being a
side view of the improved rudder, and Figure 2 an end view of part of the same.
Figure 3 is a side view and Figure 4 an inverted plan of part of the rudder stock
and Figures 5 and 6 are elevations at right angles to each other of the top part
of the rudder frame.
Under the invention the lower end of the rudder stock A is jawed or made with
two vertical side flanges A¹, (as shewn at Figures 1, 2, 3 and 4), in the space
between which is entered the upper end or stem B of the rudder blade B', or of the
frame B on which the blade B is built as shewn, the said stem B of the blade B¹
being made at its upper end of rectangular or similar cross section to fit the jaw A¹
of the rudder stock A. The parts when fitted together are secured by bolts C pass-
ing through the side flanges A¹ and the upper stem B of the frame B³ of the rudder
blade B The jawed part A¹ of the lower end of the rudder stock A may be
readily forged as part of the rudder stock, and the cost is lower than with the
ordinary means of attachment in which a separate weld has to be made, whilst the
improved construction has the further advantage that the strain in turning the
rudder is taken up by the side flanges A' and the rudder may be operated even if
the bolts should be loosened.
A vertical groove B³ is or may be formed in the rudder stem or frame B³ to
engage the inner edge of the plate of which the rudder blade is formed.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I wish it to be understood
that. I am aware of Letters Patent No. 18954 of 1893 granted to M. McKinnon and
Letters Patent No: 2705 of 1894 granted to D. McLachlan and that I claim
nothing described and claimed in the Specifications of said Letters Patent, I declare
that what I claim is;
1
The combination of a rudder stock having forged at its lower end a jaw or side
flanges and a suitably formed stem on the upper end of the rudder frame adapted
to enter said jaw and to be secured by bolts thereto substantially as described.
Dated this 28th day of December 1897
WALLACE FAIRWEATHER,
Of the Firm of Cruikshank & Fairweather,
Chartered Patent. Agents,
62, Saint Vincent Street, Glasgow,, Agent for the Applicant.