Year: 1888

page_text: Date of Application, 26th July, 1888
Complete Specification Left, 17th Apr., 1889
Complete Specification Accepted, 1st June, 1889
We, WALTER HENRY WILSON and WILLIAM JAMES PIRRIE both of Queens Island
Belfast, in the County of Antrim, Shipbuilders, do hereby declare the nature of this
invention to be as follows:-
This Invention has for its object improvements in steam steering gear. Upon the
rudder head a wheel is mounted which may be of our spring armed type or other
description. This wheel is provided with teeth which gear with a pinion driven with
gearing or through gearing wheels by the steering engine the shaft being vertical.
The bearings in which the intermediate shaft is carried are moveable to enable the
pinion upon this shaft to be put into and out of gear with the wheel on the rudder
head. The bearings of the intermediate shaft may be formed in eccentrics provided
with handles by which they are turned half round to put the pinion in or out.
Two sets of steering engines may advantageously be provided one on either side of
the vessel, and either or both may be put into action as may be required.
Dated this 26th dow of Jul 1888
CARPMAEL & Co.,
Agents.

page_text: We WALTER HENRY WILSON and WILLIAM JAMES PIRRIE both of Queens
Island Belfast in the County of Antrim Shipbuilders 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 improvements in steam steering gear. Upon the
rudder head a wheel is mounted which may be of our spring armed type or other
elastic description.
.
This wheel is provided with teeth which gear with a pinion driven with gearing
or through gearing wheels by the steering engine the shaft being vertical.
The bearings in which the intermediate shaft is carried are moveable to enable the
pinion upon this shaft to be put into and out of gear with the wheel on the rudder
head. The bearings of the intermediate shaft may be formed in eccentrics provided
with handles by which they are turned partially round to put the pinion in or out.
Two sets of steering engines may advantageously be provided one on either side of
the vessel and either or both may be put into action as may be required.
DESCRIPTION OF THE DRAWINGS.
Figures 1 and 2 are an elevation and plan partly in section showing a double set of
our improved steam steering gear.
a is the rudder head having keyed to it the spur wheel 6 fitted with our patent
spring arms cc.. The wheel gears with the pinion d fixed to the shaft whose ends 2
work in eccentric bearings gg to which the handle h is fixed and by which they can
be turned thus throwing the pinion d into and out of gear with the wheel b. The
shaft has keyed to it the wheel ; gearing with the pinion k upon the vertical crank
shaft of the steering engine m.
Having now particularly described and ascertained the nature of our said
Invention and in what manner the same is to be performed we declare that what
we claim is :-
1. Steam steering gear in which the rudder head has fixed elastically to it a horizontal
spur wheel or segment driven by a train of gearing from the engine.
2. Steam steering gear in which the rudder head has fixed elastically to it a 3

page_text: horizontal spur wheel or segment driven by a train of gearing from the engine the
axis of one of the pinions of the train being movable so that the engine can be thrown
into and out of gear substantially as described.
3. In the combinations referred to in the preceding claims the use of an engine with
a vertical crank shaft.
4. The improved steam steering gear substantially as described and shown in the
drawings.
Dated thin Wah dan
A1 1000
WALTER H. WILSON.
W. J. PIRRIE.