Apparatus for changing the curvature of a sail

Claim 3

A device for positively controlling the curvature of a sail according to claim 1, wherEin each control line has its one end firmly attached to the batten and is passed through at least one running means fixed on the batten.

Claim 4

A device according to claim 1, wherein connecting members fixed on the batten are provided between said fitting means and the batten whereby the means for attachment and for the running means of the lines are spaced from the sail.

Claim 5

A device according to claim 3, wherein said connecting members are rigid.

Claim 6

A device according to claim 3, wherein said connecting means are flexible.

Claim 7

A device according to claim 3, wherein the battens arranged on both sides of the sail have registering openings and the said connecting members are arranged to slide through said openings and are provided at their both ends with fittings for attachment and for the running fittings for the control lines.

Claim 8

A device according to claim 1, wherein the control lines are provided with stops fixed on them between an attachment point and a running point to form an abutment on the running means of the respective fitting.

Claim 9

A device according to claim 1, wherein each control line is extended downwardly to the deck and provided with individual driving means.

Claim 10

A device according to claim 1, comprising common control lines extended downwardly to the deck, having their upper ends connected to the individual control lines of each batten respectively beyond a running means thereof and having their lower ends attached to common driving means.

Claim 11

A device according to claim 9, wherein the battens provided on the jib have a fitting with running means arranged on the end of the batten adjacent the luff-rope of the jib and the common control lines attached to the individual control line beyond said running means and extending downwardly to the deck are arranged substantially parallel to said luff-rope and adjacent thereto, whereas the driving means to which said common control lines are attached are fixed on the deck and located on the port side of the middle line of the boat for the lines arranged on the starboard side of the sail and vice-versa.

Claim 12

A device according to claim 9, wherein the battens provided on the mainsail have a fitting with running means arranged on the end of each batten adjacent the luff-rope and adjacent the mast and vertically above the clew.

Claim 13

A device according to claim 11, wherein the after part of the mainsail is overhanging beyond the clew.

Claim 14

A device according to claim 11, wherein the clew is slidingly arranged along the boom, a runner being slidingly arranged on the boom and the clew having a pivot fixed to said runner, means being provided to control the forward sliding of said runner by one of the common control lines connected to the individual control lines of the battens, whereas the rearward sliding of said runner is controlled by spring means arranged on the boom.

Claim 15

A device according to claim 13, wherein the battens of the mainsail are each provided either side of the sail with two control lines, one of which controls the curvature of the forward part of the sail and is attached at one end of the middle point of the batten and has a running means located at the forward end of the batten adjacent the luff-rope, said individual control lines being connected to common control lines activated by driving means fixed to the boom, whereas the other individual control line is provided to control the curvature of the after part of the sail and is attached to the rear end of the batten and has running means located in the middle part of the batten, whereas the common driving lines, to which said other individual control lines are attached beyond their running means, are activated by driving means passing through the runner sliding on the boom.