IMPROVEMENTS IN STEAM AND HAND STEERING APPARATUS
Year: 1881

page_text: LETTERS PATENT to John Nicholson Holliday, of Sunderland, in the County
of Durham, Engineer, for an Invention of "IMPROVEMENTS IN STEAM AND
HAND STEERING APPARATUS."
PROVISIONAL SPECIFICATION left by the said John Nicholson Holliday at
the Office of the Commissioners of Patents on the 30th November 1881.
JOHN NICHOLSON HOLLIDAY, of Sunderland, in the County of Durham,
Engineer. "IMPROVEMENTS IN STEAM AND HAND STEERING APPARATUS."
The object of this Invention is to gain an increased length of lift without the
use of the double chain, pulley blocks, or sheaves, as at present used to effect that
purpose.
This method will be found especially adapted where hand or other motive power
is required to be used separately, as in steering engines, cranes, and so forth.
Fig. 1 of the accompanying Drawings is a plan of an apparatus embodying my
Invention, and Figure 2 is an elevation of the same. The same letters of reference
indicate like parts in the respective Figures.
The object of the Invention is effected by the employment of a steam or other
motive power cylinder A with piston or piston rods attached to a spindle G working
in suitable guide frames, and on which spindle G is keyed or fixed a worin
wheel D' and two drums or sheaves B, B, mounted on a transverso shaft C, which
is moved by and attached to a piston rod, to which sheaves the chains or wire
ropes H, H, are attached, and which lead from thence round a sheave at each side
of the vessel to the pillar.
The worm wheel D' is attached to a worm or screw, and thus the travel of the
piston either way imparts both a sliding and rotary motion to the drums or sheaves
B, B, and thereby increasing the travel of the chains or wire rope H, H.
When in steering engines the hand power is applied, the worm wheel D' and the
chain or wire rope sheaves B, B, are made to revolve by the turning of the worm D,
which is connected to the hand steering wheel F.
What is claimed as the Invention is,-
1st. The application of a sliding and rotary motion combined with chain
sheaves or drums, and by which an increased travel of wire rope or chain is
effected.
"
2nd. The change from hand to any other motive power, or vice versa, at any part
of the stroke, as effected by the method herein described.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said John Nicholson Holliday in the Great Seal Patent Office on the
27th May 1882.
JOHN NICHOLSON HOLLIDAY, of Sunderland, in the County of Durham,
Engineer. "IMPROVEMENTS IN STEAM AND HAND STEERING APPARATUS."
The object of this Invention is to gain an increased length of lift without the
use of the double chain, pulley blocks, or sheaves, as at present used to effect that
purpose.
This method will be found especially adapted where hand or other motive power
is required to be used separately, as in steering engines, cranes, and so forth.
To accomplish this object I employ a steam or other motive power cylinder or
cylinders with piston or piston rods attached to a spindle working in suitable guide
frames, and on which spindle is keyed or fixed a worm wheel and two drums or
sheaves to which the chains or wire ropes are attached; this worm wheel gears into
and works along a screw or worm which forms a rack for the wheel; thus the
travel of the piston either outwards or inwards imparts both a sliding and a rotary
motion to the drums or sheaves, and thereby increases the travel of chains or wiro
горе.
When in steering engines the hand power is applied, the worin wheel and the
chain or wire rope sheaves are made to revolve by the turning of the screw or
worm, which is connected to the hand steering wheel with bevel wheels.
Fig. 1 is a front elevation of my steam steering engine; Fig. 2 is an end elevation
of the machine; and Fig. 3 a plan thereof. The same letters of reference indicate
like parts in the respective Figures.
A steam or other motive power cylinder or cylinders is secured horizontally to
a bed, plate. The piston rods, two in number (which work in suitable guides in
the side frames), are formed with eyes at the outer ends, through which passes the
cross head or spindlo a; on this spindle the two druin sheaves b, b, are securely
keyed, and to which the chains or wire ropes are fastened; the worm wheel c is
also keyed on the spindle, and gears into the screw or worm d.
On steam being admitted to the cylinder the piston moves outwards or inwards,
as the case may be. carrying the crosshead spindle a; the screw or worm d acts as
a rack to the worm wheel c, and thus has both a rotary and sliding motion given
to it and the drum sheaves b, b, which is communicated to the chains or wire ropes,
and through them to the tiller of the vessel.
The admission of steam is regulated by the small hand wheel, which is connected
to a suitable valve for that purpose, the spindle of which is carried upwards to the
upper bridge, from which the apparatus can also be worked.
The steam is automatically cut off at any desired part of the stroke by the twisted
bar fin connection with the slide.
Steering can be performed by hand at any part of the stroke by working the
large hand wheel, the spindle of which is connected by bevel wheels to the screw
or worm d, which in turning causes the worm wheel c to rotate, and with it the
drum sheaves b, b, and through them the tiller is actuated as before.
On each side of the guide frames at g a series of serrated teeth are cast the whole
length of the guide. A block with corresponding teeth fits on the end of the
crosshead spindle, and is controlled by a pinching screw and wheel.
While steering with hand power this block is screwed up and gears into the
teeth on the guides, and effectually prevents the crosshead moving from the position
it may happen to be placed in. While under steain steering the screw is slackened,
and the block is allowed to pass clear of the teeth of the guides.

page_text: Having thus described my Invention and the mode of carrying it into effect,
what I claim as the features of novelty are,―
1st. The application of a combined sliding and rotary motion imparted to the
chain sheaves or drums by which an increased travel of chains or wire ropes is
effected.
2nd. The facility (by this method) of changing from hand to any other motive
power, or vice versu, at any part of the stroke.
3rd. The employment of serrated teeth on the guide frames with a block having
corresponding teeth and pinching screw for holding the engines while the apparatus
is being steered by hand, in the manner and by the means substantially as herein
described, and as illustrated by the accompanying Drawings.
In witness whereof, I, the said John Nicholson Holliday, have hereunto set
my hand and seal, this Twenty fifth day of May, in the year of our Lord
One thousand eight hundred and eighty two.
J. N. HOLLIDAY. (L.S.j