IMPROVEMENTS IN STEERING SHIPS
Year: 1878

page_text: LETTERS PATENT to Samuel Wilkinson Snowden, of 5, Waverley Terrace,
Kenilworth, Rathgar, Dublin, for the Invention of "IMPROVEMENTS IN
STEERING SHIPS."
Sealed the 17th September 1878, and dated the 2nd April 1878.
PROVISIONAL SPECIFICATION left by the said Samuel Wilkinson Snowden
at the Office of the Commissioners of Patents on the 2nd April 1878.
SAMUEL WILKINSON SNOWDEN, of 5, Waverley Terrace, Kenilworth, Rathgar,
Dublin. "IMPROVEMENTS IN STEERING SHIPS."
This Invention has for its object improvements in steering ships. I fix a plain
"boss" keyed or secured on the ordinary screw shaft, which is kept on the shaft
by a nut or key at end of the shaft. The propeller part is put on this "boss" in
two halves and secured together by studs or bolts, and is driven by a pin or pins
from the "boss" and shaft.
To keep the propellor vertical I fix a forging or casting lined with wood and
attached to the stern post and curved to suit the angle of the propellor.
I also propose an arrangement that in case of the steering rods giving way at sea
to be able immediately from the deck to secure the propellor at right angles to the
keel of the vessel, and steer the vessel by the rudder.
I alter the angle of propellor by a fork or single rod direct to the deck, and there
work it by simple and plain attachments, or by rods, wire rope, or chain through
the stern and along the screw tunnel or otherwise, and in the latter case I move the
angle of propellor either by the vessel's ordinary propellor shaft, or by a separate
engine or by hand to the deck or bridge
.
I purpose in no case to have a rudder post as in use now at the after end of pro-
pellor, but to do away with it altogether and substitute an arrangement of rudder

page_text: to steer by in the event of the breakage of the propellor or screw shaft in sea-going
vesssels forward of the propellor, and made to either drop down when required, or
it may be attached to the hull, snugly recessed in the stern, preserving a smooth
surface and also the lines of the vessel.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Samuel Wilkinson Snowden in the Great Scal Patent Office on tho
2nd October 1878.
SAMUEL WILKINSON SNOWDEN, of 5, Waverley Terrace, Kenilworth, Rathgar,
Dublin, "IMPROVEMENTS IN STEERING SHIPS."
This Invention has for its object improvements in steering ships. I fix a plain
"boss" keyed or secured on the ordinary screw shaft, which is kept on the shaft
by a nut or key at end of the shaft. The propellor part is put on this "boss" in
two halves, and secured together by studs or bolts, and is driven by a pin or pins
from the "boss" and shaft.
To keep the propellor vertical I fix a forging or casting lined with wood and
attached to the stern post, and curved to suit the angle of the propellor.
I also propose an arrangement that in case of the steering deck rods giving way
at sea to be able immediately from the deck to secure the propeller at right angles
to the keel of the vessel and steer the vessel by the rudder.
I alter the handle of propellor by a forked or single rod direct to the deck, and
there work it by simple and plain attachments, or by rods, wire rope, or chain
through the stern and along the screw tunnel or otherwise, and in the latter case I
move the angle of propellor either by the vessel's ordinary propeller shaft, or by a
separate engine or by hand to the deck or bridge.
I purpose in no case to have a rudder post as in use now at the after end of pro-
pellor, but to do away with it altogether and substitute an arrangement of rudder
to steer by in the event of the breakage of the propellor or screw shaft in sea-going
vessels forward of the propellor, and made to either drop down when required, or it
may be attached to the hull, snugly recessed in the stern, preserving a smooth surface
and also the lines of the vessel.

page_text: ,
K, eccentric on propellor shaft.
L, standard for carrying controlling gear.
M, worm wheels.
N, spoke wheel for controlling chain to deck.
O, clutch coupling for disengaging.
P, lever for acting on coupling O.
R, stuffing box on deck.
S, rod leading to deck to port or starboard with.
No. 1, nut to secure boss or globe on propellor shaft.
37
»
"
"
"
"
"
"
"3
"
33
27
>>
"
2, driving pins.
3, eccentric rods from propellor shaft to ratchet wheels for controlling
propellor.
4, stays from standard to vessel's floor.
5, radius bars to suit angle of propellor.
6, lever on G to act on wrought-iron blocks or brasses 7.
7, wrought-iron blocks or brasses for carrying C.
8, suugs on top of 7 acted on by C.
9, wrought-iron brackets on stern post for carrying Ģ.
10, collar above 9 to support G.
11, rod leading to deck.
12, coupling on propellor shaft with taper hole.
13, half clips on propellor shaft.
14, cotter for starting back outer length of propellor shaft.
15, arm on end of propellor.
In some parts of my plan the arm or rod for controlling angle of propellor can
also be used as a rudder and at the same time with the propellor.
I control the movements of propellor from either the fore or after ends of it.
I use the boss or globe, keyed on propellor shaft, or forged solid with the shaft,
and the pins also solid or put in.
I peg the hollow part of propellor, or boss, or globe with wood to save labour in
itting.
I claim,
-
The particular method of securing the propellor to the boss or globe on end of
screw shaft.
And also the method of working the propellor both from the deck and from the
vessel's ordinary screw shaft, or by band to any part of the vessel.
And the general arrangement shown in Drawings.
In witness whereof, I, the said Samuel Wilkinson Snowden, have hereunto
set my hand and seal, this 1st day of October, in the year of our Lord One
thousand eight hundred and seventy-eight.
SAML W SNOWDEN
(rel
SAME W SNOWDEN
(IC)