Improved Steering Gear for Fishing and other Boats.
Year: 1892

page_text: Date of Application, 19th Sept., 1892
Complete Specification Left, 14th June, 1893-Accepted, 19th Aug., 1893
PROVISIONAL SPECIFICATION.
Improved Steering Gear for Fishing and other Boats.
We, JAMES DEAS JACK, Engineer of 19 King Street, in the Town and County
of Elgin, and ROBERT HUNTER NICOL SELLAR, Agricultural Implement Maker,
of Huntly in the County of Aberdeen, do hereby declare the nature of this
invention to be as follows:-
This invention relates to improved steering gear for fishing and other boats and
consists as follows. A sole plate of cast iron is bolted to the deck of the boat.
Bolted on to this sole plate is a main bracket, which has a cross piece forming the
bearing for an upright shaft or spindle, on the top of which is fixed the steering
wheel. The said cross piece has an iron buckle with washer and nut attached for
the purpose of binding or gripping the spindle so as to prevent it from revolving
when necessary. On the lower end of the spindle there is cast or keyed a three or
more threaded worm or screw which gears into a corresponding worm wheel which
is keyed on a horizontal shaft which is carried in two brackets preferably one on
each side of the wheel; the said brackets are bolted to the sole plate. On the
projecting ends of the horizontal shaft two chain drums are fixed and to which
the chains are attached for guiding the rudder. Between the chain drums and the
stern of the boat two stopper brackets are bolted to the deck in such a manner as
to permit of the rudder being locked so as to keep it steady when the boat is riding
at the nets. The chains also pass over two inclined guide rollers through the
gunwale of the boat and are attached at their ends to each side of the rudder by
any suitable means.
Dated this 17th day of September 1892.
JOHNSONS,
115, St. Vincent Street, Glasgow, Petitioner's Agents.
COMPLETE SPECIFICATION.
Improved Steering Gear for Fishing and other Boats.
We JAMES DEAS JACK, Engineer, of 19 King Street, in the Town and County
of Elgin, and ROBERT HUNTER NICOL SELLAR, Agricultural Implement Maker
of Huntly in the County of Aberdeen, 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 relates to improved steering gear for fishing and other boats and
consists as follows:-A sole plate of cast iron is bolted to the deck of the boat,
bolted on to this sole plate is a main bracket which has a cross piece forming the
bearing for an upright shaft or spindle, on the top of which is fixed the steering
wheel. The said cross piece has an iron buckle with washer and nut attached for
the purpose of binding or gripping the spindle so as to prevent it from revolving
when necessary.
On the lower end of the spindle there is cast or keyed a three or
more threaded worm or screw which gears into a corresponding worm wheel which
is keyed on a horizontal shaft which is carried in two brackets preferably one on
each side of the wheel the said brackets are bolted to the sole plate. On the
projecting ends of the horizontal shaft two chain drums are fixed and to which the
chains are attached for guiding the rudder. Between the chain drums and
the stern of the boat two stopper brackets are bolted to the deck in such a manner
as to permit of the rudder being locked so as to keep it steady when the boat is

page_text: riding at the nets. The chains also pass over two inclined guide rollers through
the gunwale of the boat and are attached at their ends to each side of the rudder
by any suitable means.
In order to enable our invention to be fully understood we will proceed to
describe the same by reference to the accompanying drawings (3 sheets) in which
Figure 1 (Sheet 1) represents a side elevation of a steering gear for fishing and
other boats constructed according to our invention.
Figure II (Sheet 2) is a plan of the same with the hand steering wheel
removed.
Figure III (Sheet 1) is a front elevation.
Figures IV, V, VI, and VII (Sheet 3) are enlarged details of parts of steering
gear.
Similar letters in all the figures represent similar parts.
The
A (Sheets 1 and 2) is the cast iron sole plate bolted to the deck B of the boat in
any convenient position near the stern. C. is the bracket bolted to the sole-
plate A, and D is the upright shaft carried by and rotating in the bracket C.
E is the hand steering (wheel) wheel fixed to the top of the shaft D and working
horizontally in preference, as shewn in the drawing (Sheet 1). F is the three
threaded screw pinion-coarse pitched, keyed or cast on the shaft D below the
steering wheel. G is the screw wheel in front of and gearing into the screw
pinion F. H, I, are two brackets bolted to the sole plate A carrying the horizontal
shaft (shaft) J to which, between the brackets H and I, the screw wheel G is
keyed. The ends of the horizontal shaft J which project beyond the brackets H
and I are by preference made square to receive two short chain barrels K, L,
(right and left) and fixed by a screw nut and washer. To each of the chain
barrels short link chains M, N, are attached, the chain M passing over the top of
the chain barrel K, and the chain N on the underside of the chain barrel L.
other ends of the chains M, N, are led aft towards the stern of the boat, and pass
through cast steel sliding sleeves O. O. (shewn enlarged Sheet 3 Figures 6 and 7)
which can be fixed on any part of the chains by the staple pins P. P. and are used
for the purpose of adjusting the length of the chains. To the sliding sleeves O. 0.
long malleable iron shackles Q. Q. are attached, to these, by other short shackles,
the chains R. S. are attached and leading aft, to the rudder head T passing over
guide rollers U, U, carried on brackets V, V, bolted to the deck B. Directly in
front of the guide rollers the apparatus for locking the chains R. S. is placed.
(Shewn enlarged Sheet 3 Figures 4 and 5.) This consists on the port or left hand
side of the boat of a sole plate W bolted to the deck B; on this sole plate, but
free to be moved horizontally by the lever X pivotted on the sole plate W one of
the brackets Y, Y, is placed and between the upright sides of which the chain R
passes over the guide roller U towards the rudder head T to which it is fixed.
Each of the brackets Y, Y, is provided with a moveable pall Z, Z, hung between
the upright sides of the brackets, which, when thrown forward, catch one of the
links of the chain, thus locking it into position. In order to secure the proper
tightening of the chains and consequent fixing of the rudder, the lever X is pressed
backwards throwing forward the moveable bracket Y on the sole plate W when the
chain is sufficiently tight the lever X is secured to the ring bolt W' fixed to the
deck B by two or three turns of a rope passed through the eye of the lever X and
the ring W. The bracket Y through which the starboard or right band chain S.
passes, is bolted direct to the deck B. without the sole plate W or the lever X.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed we declare that what we
claim is.
1. The combination of parts forming the improved steering gear for fishing and
other boats, substantially as herein before described and represented in the accom-
panying drawings.
2. The use for steering fishing and other like boats of the improved gear

page_text: herein before described and represented in the accompanying drawings or other
modifications of the same.
3. The use in combination with steering gear such as that herein described of
the locking apparatus and the steel sliding sleeve, substantially as hereinbefore
described and represented in the accompanying drawings.
Dated this Thirteenth day of June 1893.
JAMES D. JACK.
ROBT. H. N. SELLAR.