Improvements in and relating to Ships' Steering Gear.
Year: 1896

page_text: Date of Application, 1st July, 1896
Complete Specification Left, 1st Apr., 1897-Accepted, 15th May, 1897
PROVISIONAL SPECIFICATION.
Improvements in and relating to Ships' Steering Gear.
I, ADAM MC WILLIAM of Earl Street, Port Gordon, Banffshire, Scotland,
Blacksmith and Engineer, do hereby declare the nature of this invention to be
as follows:-
My invention relates to ships or boats steering gear of simple and efficient action
and to devices for locking the rudder midway.
The gear comprises, on the hand wheel spindle a pinion gearing with and
actuating two spur wheels on whose shaft are each a pinion which again goar with
and actuate two racks preferably set at an angle to each other to which the rudder
chains are connected.
In order to lock the rudder when desired I provide one or two hooks actuated
by screws or equivalents to catch the rudder chains and haul them in tight.
Dated this 29th day of June 1896.
D. F. MASON, C.E.,
Patent Agent, Glasgow.
Improvements in and relating to Ships' Steering Gear.
I, ADAM MC WILLIAM of Earl Street, Port Gordon, Banffshire, Scotland
Blacksmith and Engineer, 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 :-
My said invention relates to ships or boats steering gear of simple and efficient
action, and to devices for locking the rudder midway.
And in order the system, mode or manner, in or under which the same is or may
be carried into effect may be properly understood I have appended the annexed
sheet of drawings whereon:
Fig. 1 is a sectional elevation and Fig. 2 a sectional plan of the gear and locking
device.
Fig. 3 is an end view shewing disposition of gear of locking device.
As constructed according to my invention, the gear comprises a vertical spindle a
mounted in the arched frame b mounted on the sole or bed-plate c. The spindle a
has fixed on top the operating hand-wheel d and near bottom the skewed pinion
wheel e which gears into and actuates oppositely simultaneously the two bevel
spur wheels i, n set at an angle to each other on their respective shafts which are
journalled on their inner ends in the frame b and on their outer ends in the brackets j,
fixed on sole plate c. On said spur wheel shaft i is fixed a pinion f and on the
wheel n shaft a pinion g which respectively gear into and drive simultaneously
oppositely the racks r. o. set at an angle to each other to correspond with the spur
wheels i. n. all as shewn at Fig. 2. The toothed racks r. o. are fixed on the top of

page_text: bars which slide on bed plate c (or they may run on antifriction bearing wheels u.
Fig. 1. fitted on sole plate c. The back end of rack-bars are each fitted with slip
eye pieces which have hooks on ends and are connected to the chains leading to
the rudder tiller. As the hand wheel d is turned the racks move in opposite
directions, thus drawing one chain in by eye while other eye and chain is
moving out.
In order to draw in the chains and lock the rudder when desired in mid-position,
there are two rods m having each a shackle m¹ which catches on to its corresponding
hook as the rods m are drawn in. The rods m are both simultaneously drawn in
by having their ends screwed and working in correspondingly screwed wheels q
which are revolved by the skewed piaion and hand wheel on spindle k which is set
higher than the wheels 7 to clear them, as shewn at Fig. 3.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:
1st. The arrangement of mechanism as and for the purposes herein before set
forth and shewn.
2nd. The combination of bevel gear wheels e. i. n; pinions f, g; and racks r, o,
all in the manner as and for the purpose herein before set forth and shewn.
3rd. The arrangement and combination of hooks ; shackles m'; rods m and
screw wheels 2, all as and for the purpose hereinbefore described and shewn.
Dated this 30th day of March 1897.
D. F. MASON,
Patent Agent, Glasgow.