Spaced double surface sail construction

A sail and supporting means, a mast, said sail comprising sail material forming a sail envelope having two spaced sides, said sail material forming the forward portion of the sail envelope from head to tack for passing around and contacting said mast, said sail material connected together rearwardly of the forward portion forming the leech of the sail envelope between the head and clew, said two spaced sides extending from the forward portion to said leech, said sail material connected together at the bottom forming the foot of the sail envelope between the tack and clew, an opening in the forward end of said foot of said sail envelope receiving said mast, a plurality of spaced curvable battens within said sail envelope for lateral movement between the two spaced sides of said sail envelope to shape said sail envelope, a plurality of spaced batten sockets contacting said mast within said sail envelope, one spaced batten socket for each batten, each spaced batten socket having means for supporting the forward end of a batten, means connected within said sail envelope to at least one intermediate point on a plurality of said battens to properly position them for lateral movement within the sail envelope between one side of the sail envelope and the other, and means connecting a plurality of the rear ends of said battens to said leech of the sail envelope to place a compression force on the end of each batten to produce a curvature in each batten towards one side of said sail envelope or the other.

A batten socket for positioning the front end of a batten with a mast for movement relative to a mast, said batten socket having two side plates with front ends extending forwardly to fit around a mast and rear ends extending rearwardly and angled inwardly to provide an opening for the forward end of a batten, an interconnecting support plate being connected between the front ends and rear ends of said two side plates for contacting the rear of a mast, sock means for supporting the forward end of a batten between the rear ends of said batten socket, said sock means having a pocket for receiving the forward end of a batten, said sock means having an upwardly and downwardly extending flange, said upwardly extending flange extending above the pocket and said downwardly extending flange extending below the pocket, each upwardly and downwardly extending flange having an opening therethrough, one rivet extending through the rear ends of said side plates above said pocket and through the opening in said upwardly extending flange, a second rivet extending through the rear ends of said side plates below said pocket and through the opening in said downwardly extending flange, said pocket having a pivotal movement between the inner sides of the two side plates, said first and second rivets supporting the rear ends of said side plates and positioning said sock means for pivotal movement.