GB2244250A - Self tacking reefable sail - Google Patents

Self tacking reefable sail Download PDF

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Publication number
GB2244250A
GB2244250A GB9011687A GB9011687A GB2244250A GB 2244250 A GB2244250 A GB 2244250A GB 9011687 A GB9011687 A GB 9011687A GB 9011687 A GB9011687 A GB 9011687A GB 2244250 A GB2244250 A GB 2244250A
Authority
GB
United Kingdom
Prior art keywords
sail
boom
reefable
tacking
self
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Withdrawn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
GB9011687A
Other versions
GB9011687D0 (en
Inventor
Ian Charles Howlett
Original Assignee
Howlett Ian C
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 Howlett Ian C filed Critical Howlett Ian C
Priority to GB9011687A priority Critical patent/GB2244250A/en
Publication of GB9011687D0 publication Critical patent/GB9011687D0/en
Publication of GB2244250A publication Critical patent/GB2244250A/en
Withdrawn legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63HMARINE PROPULSION OR STEERING
    • B63H9/00Marine propulsion provided directly by wind power
    • B63H9/04Marine propulsion provided directly by wind power using sails or like wind-catching surfaces
    • B63H9/08Connections of sails to masts, spars, or the like
    • B63H9/10Running rigging, e.g. reefing equipment

Abstract

A self tacking reefable sail for a sailing vessel comprises a boom (12) pivotable about a pivot (13) located towards the forward end of the boom, a forestay (14) extending from the forward end of the boom (12) to a mast (10), a backstay (15), a reefable sail (17) mounted on the forestay (14), and a sheet (21) having one end connected to the rearward end of the boom 12 and its other end connected to the mast or other fixed structure. <IMAGE>

Description

SELF TACKING REEFABLE SAIL This invention relates to a self tacking reefable sail for a sailing vessel, such as a yacht, or a vessel provided with auxiliary sail propulsion.
According to the present invention there is provided a self tacking reefable sail for a sailing vessel, comprising a boom pivotable about a pivot axis located towards the forward end of the boom, a forestay extending from the forward end of the boom to a mast, a backstay extending from the rearward end of the boom, a sail mounted on the forestay, said sail being reefable, and a sheet having one end connected to the rearward end of the boom and its other end connected to the mast or other fixture for controlling the pivotable movement of the boom.
The pivot for the boom may be anchored to a yard or to the deck of a vessel.
The sail may be reefed by moving the sail downwardly along the forestay or the sail may be reefed by furling the sail by a roller type furler.
An embodiment of the invention will now be described, by way of an example, with reference to the accompanying drawing, in which the single figure is a side elevation of a self tacking reefable jib sail embodying the present invention.
The sailing vessel is provided with a mast 10 and a yard 11 which are rotatable about the axis of the mast, Mounted on the yard 11 is a boom 12 which is pivotable about a pivot 13 which is anchored to the yard 11. When the sailing vessel is not provided with a yard 11 the pivot 13 is anchored to the deck of the vessel.
The pivot 13 may be in a fixed position on the boom 12 or its position may be adjustable on the boom 12. Preferably the pivot 13 is located at a position whose distance from the forward end of the boom represents some 20% of the overall length of the boom 12.
Connected to the forward end of the boom 12 is a forestay 14 which extends to the mast 10 and connected to the rearward end of the boom 12 is a backstay 15 which is preferably adjustable by an adjuster 16 to react the tension of the forestay 14.
A sail 17, preferably a jib sail, is slidably mounted on the forestay 14 by hanks 18. Alternatively, the sail 17 may be mounted on the forestay 14 by means of a luff zip or a groove system, or any other method which will allow the sail 17 to slide along the forestay 14. The sail 17 may be provided with stiffening battens and it may be single or double surfaced.
In the illustrated embodiment the sail 17 is provided with cringles 19, i.e. a hole or eyelet, which are used to tie the bottom of the sail 17 to the boom 12. Thus when the sail 17 is reefed, different sets of cringles 19 are used as the sail 17 is lowered down the forestay 14.
The broken-line 20 indicates the rearward edge of the sail 17 when reefed.
Connected to the rearward end of the boom 12 is a sheet 21 which at its other end is connected to the mast 10 or the yard 11 and which controls the pivotable movement of the boom 12 and thus the angle of incidence of the sail 17. By means of this arrangement the jib sail 17 is self tacking and when reduced in area, the saiL 17 retains this ability.
The yard 11 may be provided with a wind direction sensor 22 for both manual and automatic control of the sail rig incidence and hence heeling force. This is achieved because the sensor 22 measures the wind direction relative to the axis of the rig rather than of the vessel and because the sails in this configuration may have constant sheeting angles to the yard/boom axis.

Claims (10)

1. A self tacking reefable sail for a sailing vessel, comprising a boom pivotable about a pivot axis located towards the forward end of the boom, a forestay extending from the forward end of the boom to a mast, a backstay extending from the rearward end of the boom, a sail mounted on the forestay, said sail being reefable, and a sheet having one end connected to the rearward end of the boom and its other end connected to the mast or other fixture for controlling the pivotable movement of the boom.
2. A self tacking reefable sail as claimed in claim 1, in which the pivot for the boom is anchored to a yard or to the deck of a vessel.
3. A self tacking reefable sail as claimed in claim 1 or claim 2, in which the sail is reefed by moving the sail downwardly along the forestay.
4. A self tacking reefable sail as claimed in claim 1 or claim 2, in which the sail is reefed by furling the sail by means of a roller type furler.
5. A self tacking reefable sail as claimed in any preceding claim, in which the pivot for the boom is adjustable for position along the boom.
6. A self tacking reefable sail as claimed in any preceding claim, in which the pivot for the boom is located at a distance from the forward end of the boom which is 20% of the overall length of the boom.
7. A self tacking reefable sail as claimed in any preceding claim, in which the backstay is adjustable to react the tension of the forestay.
8. A self tacking reefable sail as claimed in any preceding claim, in which the boom is pivoted to a yard and the yard is provided with a wind direction sensor for manual or automatic control of the sail rig incidence.
9. A self tacking reefable sail for a sailing vessel, substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.
10. A sailing vessel provided with a self tacking reefable sail as claimed in any preceding claim.
GB9011687A 1990-05-24 1990-05-24 Self tacking reefable sail Withdrawn GB2244250A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9011687A GB2244250A (en) 1990-05-24 1990-05-24 Self tacking reefable sail

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9011687A GB2244250A (en) 1990-05-24 1990-05-24 Self tacking reefable sail

Publications (2)

Publication Number Publication Date
GB9011687D0 GB9011687D0 (en) 1990-07-11
GB2244250A true GB2244250A (en) 1991-11-27

Family

ID=10676530

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9011687A Withdrawn GB2244250A (en) 1990-05-24 1990-05-24 Self tacking reefable sail

Country Status (1)

Country Link
GB (1) GB2244250A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19532443A1 (en) * 1995-09-02 1997-03-06 Reinhard Hans Sailing-boat with foresail mast
WO2012094731A1 (en) * 2010-12-08 2012-07-19 Windward First Marine Technology Development Partnership, British Columbia Microairfoil and method for rigging and control

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB683775A (en) * 1950-05-12 1952-12-03 William Edward Back Improvements in or relating to the sails and rigging of sailing boats
GB1389989A (en) * 1972-09-15 1975-04-09 Vicard Pierre G Boatds driven by a sail
US4603648A (en) * 1983-05-09 1986-08-05 Jacques Berge Watercraft with at least two twin hulls

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB683775A (en) * 1950-05-12 1952-12-03 William Edward Back Improvements in or relating to the sails and rigging of sailing boats
GB1389989A (en) * 1972-09-15 1975-04-09 Vicard Pierre G Boatds driven by a sail
US4603648A (en) * 1983-05-09 1986-08-05 Jacques Berge Watercraft with at least two twin hulls

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19532443A1 (en) * 1995-09-02 1997-03-06 Reinhard Hans Sailing-boat with foresail mast
DE19532443C2 (en) * 1995-09-02 2000-07-13 Reinhard Hans Sailboat with a mast for setting a foresail
WO2012094731A1 (en) * 2010-12-08 2012-07-19 Windward First Marine Technology Development Partnership, British Columbia Microairfoil and method for rigging and control

Also Published As

Publication number Publication date
GB9011687D0 (en) 1990-07-11

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Legal Events

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