GB2057379A - Improved steering tiller for an outboard motor of a boat - Google Patents

Improved steering tiller for an outboard motor of a boat Download PDF

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Publication number
GB2057379A
GB2057379A GB8028292A GB8028292A GB2057379A GB 2057379 A GB2057379 A GB 2057379A GB 8028292 A GB8028292 A GB 8028292A GB 8028292 A GB8028292 A GB 8028292A GB 2057379 A GB2057379 A GB 2057379A
Authority
GB
United Kingdom
Prior art keywords
tiller
motor
arm
board
locked positions
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB8028292A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
RTK Marine Ltd
Original Assignee
Rotork Marine Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rotork Marine Ltd filed Critical Rotork Marine Ltd
Priority to GB8028292A priority Critical patent/GB2057379A/en
Publication of GB2057379A publication Critical patent/GB2057379A/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H20/00—Outboard propulsion units, e.g. outboard motors or Z-drives; Arrangements thereof on vessels
    • B63H20/08—Means enabling movement of the position of the propulsion element, e.g. for trim, tilt or steering; Control of trim or tilt
    • B63H20/12—Means enabling steering
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B61/00—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
    • F02B61/04—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving propellers
    • F02B61/045—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving propellers for marine engines

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Agricultural Machines (AREA)

Abstract

A tiller for an outboard motor for use with a boat hull 10, said tiller comprising in combination a tiller arm 15 pivoted about a tiller head 153 able to be fixed to a tiltable motor board 13 on said hull, the tiller arm and tiller head exhibiting one unlocked (Figure 2A) and two locked positions (not shown) said one unlocked position being with the tiller arm 15 juxtaposed with a stern transom on said hull for forward normal running of said motor, one of said two locked positions being as that shown in Figure 2A with the tiller arm 15 juxtaposed with said stern transom for reverse running of said motor and the other of said two locked positions being with the tiller arm 15 clear of said stern transom for tilting said tiltable motor board to bring the propeller of the motor into a raised position. <IMAGE>

Description

SPECIFICATION Improved steering tiller for an outboard motor of a boat hull This invention relates to an improved tiller for an outboard motor of a boat hull.
According to the present invention there is provided a tiller for an outboard motor for use with a boat hull, said tiller comprising in combination a tiller arm pivoted about a tiller head able to be fixed to a tiltable motor board on said hull, the tiller arm and tiller head exhibiting one unlocked and two locked positions, said one unlocked position being with the tiller arm juxtaposed with a stern transom on said hull for forward normal running of said motor, one of said two locked positions being with the tiller arm juxtaposed with said stern transom for reverse running of said motor and the other of said two locked positions being with the tiller arm clear of said stern transom for tilting said tiltable motor board to bring the propeller of the motor into a raised position.
The invention will be more fully understood from the following description given by way of example only with reference to the figures of the accompanying drawings in which: Figure 1 shows a part view of the stern in elevation of a boat hull having a tilting mounting board to which is fixed an outboard motor operable by a tiller.
Figures 2A, 2B, 2C, 20 are schematics showing respectively four different positions for the tiller: 2Aforward normal running, 2B reverse, 2C to tilt the mounting board and outboard motor, 2D motor tilted.
Figure 3 is an enlarged view of part of the tiller head to show its geometry.
Referring now to the separate Figures we have in Figure 1 a stern 10 of a vessel 11 provided with an aligned pair of extension tubes 121, 1 22 (one only being seen in the elevation), supporting a tilting board 13 about pivot 14. The board 13 is able to be tilted by tiller arm 15 pivotably fixed to tiller head 153 that is provided with a manual level 16 actuating a bowden cable 17 to a bellcrank 181, that pivots about 182 (shown more clearly in the enlarged inset Figure), that actuates latching means in the form of a spring loaded detent plunger means 191.
In Figure 2A the plunger 19 is urged in the direction of arrow 192 by spring 193 and the board 13 is in an unlocked position, thus board 13 can kick back without actuating the tiller arm 15 in the direction of arrow 23 for example as a reaction force, should skeg 20 hit an underwater obstacle.
In Figure 2B, the conditions are for the running of the boat in reverse and the plunger 191 is actuated by lever 16, cable 17 and bellcrank 181 to enter hole H1 so that any reaction to the propeller drive is taken on the transom 20 by a plane or roller 152 made of rubber or plastics, the tiller arm 15 being moved in the direction of arrow 21 onto its rollers 152. (1st locking position).
In Figure 2C the conditions are for tilting the idle motor into the lifted position. Plunger 191 is actuated by lever 16, cable 17 and bellcrank 181 to enter hole H2 so that the tilting board 13 may be pivoted about pivot 14 when tiller arm 15 is moved in the direction of arrow 22. (2nd locking position).
Figure 2D shows the motor tilted into a position that raises the propeller for inter alia beaching the craft.
The geometry of the latching means is more fully shown in Figure 3. Holes H1, H2 in tiller head 153 are spaced apart on line NN1 and offset from pivot point 14. Thus for tilting the board about 14 as shown in Figures 2C, 2D a good leverage is obtained on line LL1.
A latching pawl or catch and suitable detents co-operating therewith may be employed on the tiller arm such that when controlled by a suitable operating lever located on the manual steering end of the tiller arm, the operating lever being so connected with the latching pawl as to provide the said unlocked and two locked conditions referred to above.
1. A tiller for an outboard motor for use with a boat hull, said tiller comprising in combination a tiller arm pivoted about a tiller head able to be fixed to a tiltable motor board on said hull, the tiller arm and tiller head exhibiting one unlocked and two locked positions, said one unlocked position being with the tiller arm juxtaposed with a stern transom on said hull for forward normal running of said motor, one of said two locked positions being with the tiller arm juxtaposed with a stern transom on said hull for forward normal running of said motor, one of said two locked positions being with the tiller arm juxtaposed with said stern transom for reverse running of said motor and the other of said two locked positions being with the tiller arm clear of said stern transom for tilting said tiltable motor board to bring the propeller of the motor into a raised position.
2. The tiller according to claim 1 wherein the unlocked and locked positions are effected from a single pin spring urged in and out of engagement with two different holes in the tiller head or arm.
3. The tiller according to claim 1 wherein the unlocked and locked positions are effected by a pawl and co-operating detents.
4. The tiller according to any preceding claim wherein the unlocked and locked positions are controlled from a leveratthe manual steering end of said tiller arm that actuates the pin or pawl through a bowden cable and a bell crank.
5. A tiller constructed and arranged substantially as hereinbefore described and as shown in the several Figures of the accompanying drawings.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (5)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Improved steering tiller for an outboard motor of a boat hull This invention relates to an improved tiller for an outboard motor of a boat hull. According to the present invention there is provided a tiller for an outboard motor for use with a boat hull, said tiller comprising in combination a tiller arm pivoted about a tiller head able to be fixed to a tiltable motor board on said hull, the tiller arm and tiller head exhibiting one unlocked and two locked positions, said one unlocked position being with the tiller arm juxtaposed with a stern transom on said hull for forward normal running of said motor, one of said two locked positions being with the tiller arm juxtaposed with said stern transom for reverse running of said motor and the other of said two locked positions being with the tiller arm clear of said stern transom for tilting said tiltable motor board to bring the propeller of the motor into a raised position. The invention will be more fully understood from the following description given by way of example only with reference to the figures of the accompanying drawings in which: Figure 1 shows a part view of the stern in elevation of a boat hull having a tilting mounting board to which is fixed an outboard motor operable by a tiller. Figures 2A, 2B, 2C, 20 are schematics showing respectively four different positions for the tiller: 2Aforward normal running, 2B reverse, 2C to tilt the mounting board and outboard motor, 2D motor tilted. Figure 3 is an enlarged view of part of the tiller head to show its geometry. Referring now to the separate Figures we have in Figure 1 a stern 10 of a vessel 11 provided with an aligned pair of extension tubes 121, 1 22 (one only being seen in the elevation), supporting a tilting board 13 about pivot 14. The board 13 is able to be tilted by tiller arm 15 pivotably fixed to tiller head 153 that is provided with a manual level 16 actuating a bowden cable 17 to a bellcrank 181, that pivots about 182 (shown more clearly in the enlarged inset Figure), that actuates latching means in the form of a spring loaded detent plunger means 191. In Figure 2A the plunger 19 is urged in the direction of arrow 192 by spring 193 and the board 13 is in an unlocked position, thus board 13 can kick back without actuating the tiller arm 15 in the direction of arrow 23 for example as a reaction force, should skeg 20 hit an underwater obstacle. In Figure 2B, the conditions are for the running of the boat in reverse and the plunger 191 is actuated by lever 16, cable 17 and bellcrank 181 to enter hole H1 so that any reaction to the propeller drive is taken on the transom 20 by a plane or roller 152 made of rubber or plastics, the tiller arm 15 being moved in the direction of arrow 21 onto its rollers 152. (1st locking position). In Figure 2C the conditions are for tilting the idle motor into the lifted position. Plunger 191 is actuated by lever 16, cable 17 and bellcrank 181 to enter hole H2 so that the tilting board 13 may be pivoted about pivot 14 when tiller arm 15 is moved in the direction of arrow 22. (2nd locking position). Figure 2D shows the motor tilted into a position that raises the propeller for inter alia beaching the craft. The geometry of the latching means is more fully shown in Figure 3. Holes H1, H2 in tiller head 153 are spaced apart on line NN1 and offset from pivot point 14. Thus for tilting the board about 14 as shown in Figures 2C, 2D a good leverage is obtained on line LL1. A latching pawl or catch and suitable detents co-operating therewith may be employed on the tiller arm such that when controlled by a suitable operating lever located on the manual steering end of the tiller arm, the operating lever being so connected with the latching pawl as to provide the said unlocked and two locked conditions referred to above. CLAIMS
1. A tiller for an outboard motor for use with a boat hull, said tiller comprising in combination a tiller arm pivoted about a tiller head able to be fixed to a tiltable motor board on said hull, the tiller arm and tiller head exhibiting one unlocked and two locked positions, said one unlocked position being with the tiller arm juxtaposed with a stern transom on said hull for forward normal running of said motor, one of said two locked positions being with the tiller arm juxtaposed with a stern transom on said hull for forward normal running of said motor, one of said two locked positions being with the tiller arm juxtaposed with said stern transom for reverse running of said motor and the other of said two locked positions being with the tiller arm clear of said stern transom for tilting said tiltable motor board to bring the propeller of the motor into a raised position.
2. The tiller according to claim 1 wherein the unlocked and locked positions are effected from a single pin spring urged in and out of engagement with two different holes in the tiller head or arm.
3. The tiller according to claim 1 wherein the unlocked and locked positions are effected by a pawl and co-operating detents.
4. The tiller according to any preceding claim wherein the unlocked and locked positions are controlled from a leveratthe manual steering end of said tiller arm that actuates the pin or pawl through a bowden cable and a bell crank.
5. A tiller constructed and arranged substantially as hereinbefore described and as shown in the several Figures of the accompanying drawings.
GB8028292A 1979-09-03 1980-09-02 Improved steering tiller for an outboard motor of a boat Withdrawn GB2057379A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8028292A GB2057379A (en) 1979-09-03 1980-09-02 Improved steering tiller for an outboard motor of a boat

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB7930450 1979-09-03
GB8028292A GB2057379A (en) 1979-09-03 1980-09-02 Improved steering tiller for an outboard motor of a boat

Publications (1)

Publication Number Publication Date
GB2057379A true GB2057379A (en) 1981-04-01

Family

ID=26272746

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8028292A Withdrawn GB2057379A (en) 1979-09-03 1980-09-02 Improved steering tiller for an outboard motor of a boat

Country Status (1)

Country Link
GB (1) GB2057379A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5052320A (en) * 1990-06-25 1991-10-01 Cremer David F Emergency tiller for outboard motors
WO2023057731A1 (en) 2021-10-06 2023-04-13 Rad Propulsion Ltd Outboard propulsion unit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5052320A (en) * 1990-06-25 1991-10-01 Cremer David F Emergency tiller for outboard motors
WO2023057731A1 (en) 2021-10-06 2023-04-13 Rad Propulsion Ltd Outboard propulsion unit
GB2612022A (en) * 2021-10-06 2023-04-26 Rad Propulsion Ltd Motor

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Legal Events

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WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)