Improvements in and relating to Rudder Heads for Vessels.
Year: 1899

page_text: 2
PROVISIONAL SPECIFICATION.
Improvements in and relating to Rudder Heads for Vessels.
I, CHARLES RUNCY DAVIDSON, of 21, Regent Quay, in the City and County
of Aberdeen, Ship Owner, do hereby declare the nature of my invention
to be as follows:-
This invention has reference to and comprises improvements in and relating
to rudder heads for vessels and has for its object the preventing of the disablement
of the vessel even though the rudder head or shaft should break within its casing
or trunk in the vessel's stern.
In carrying into practice the improvements of this invention the rudder and
rudder head may be constructed all in a usual manner either in one piece, or
separately and connected by flanges or collars bolted together, but a tube or hollow
shaft of proportionate strength is placed over the rudder head and bolted by
means of a flange on its lower end to the connecting flanges, or it may be to
a special collar formed on the lower part of the rudder head.
An ordinary tiller or quadrant is secured on the top of the rudder head and
a supplementary one on the top of the hollow shaft which passes up through the
usual stuffing box.
Should the rudder head be broken by any means the steering chains can be
detached from the tiller or quadrant on the rudder head and applied to that on
the hollow shaft and the vessel be steered thereby..
Means may be provided for coupling, or securing together when desired the
two tillers, quadrants, or crossheads so that the steering chains or other appliances
will not require to be shifted.
Deted the 1st day.
1000
Improvements in and relating to Rudder Heads for Vessels.
I, CHARLES RUNCY DAVIDSON, of 21, Regent Quay, in the City and County
of Aberdeen, Ship Owner, do hereby declare the nature of my invention
and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement in writing, reference being
made to the accompanying drawings:-
This invention has reference to and comprises improvements in and relating
to rudder heads for vessels and has for its object the preventing of the disablement

page_text: of the vessel even though the rudder head or shaft should break within its casing
or trunk in the vessel's stern.
And in order that my invention may be properly understood I have hereunto
appended a sheet of explanatory drawings in which Figure 1 is a side elevation
of a rudder and Figure 2 an elevation partly in section of a rudder head fitted
with crossheads both as fitted with my improvements, Figure 3 is an illustration
of a different method of applying the improvements, and Figure 4 is a plan of
the securing flange.
Referring to these drawings:-In carrying into practice the improvements of
this invention the rudder a and rudder head 6 may be constructed all in a
usual manner either in one piece, or as shown in Figures 1 and 2 separately
and connected by flanges or collars d bolted together, but a tube or hollow
shaft e of proportionate strength is placed over the rudder head and bolted by
means of a flange f on its lower end to the connecting flanges c d, or as shown in
Figure 3 it may be bolted to a special collar c formed on the lower part of the
rudder head b.
An ordinary tiller g Figure 1 or a crossheadh Figure 2 is secured on the top
of the rudder head 6 and a supplementary tiller i or crosshead j is secured on
the top of the hollow shaft e which passes up through the usual stuffing box.
Should the rudder head be broken by any means the steering chains can be
detached from the tiller g or crosshead on the rudder head and applied to that
on the hollow shaft and the vessel be steered thereby.
Means may be provided as indicated in Figure 2 for coupling or securing
together, when desired the two tillers, quadrants, or crossheads so that the steering
chains or other appliances will not require to be shifted.
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:
-
First. Improvements in rudder heads by which a tube or hollow shaft fitted
with a supplementary tiller quadrant or crosshead is fitted over the rudder head
and secured to same by flanges substantially as herein described and illustrated
by the accompanying drawings.
Second. The fitting of rudder heads with surrounding tubes or hollow shafts
secured by flanges and arranged substantially as and for the advantages hercin
described and illustrated by the accompanying drawings.
Dated the 2nd February 1000
W. R. M. THOMSON & Co.,
96, Buchanan Street, Glasgow, Agents.