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US 3,938,460 AGranted
Sail-raising system
AssigneeHood Sailmakers, Inc.
InventorsWalter M. Wales, Donald K. Mitchell, Kenneth C. Smalley
Life of this patent
Estimating the term…
Abstract
In a jib sail system, roller-furling and interchangeability of jibs is provided by utilizing a rotatable, slotted stay member, preferably aerodynamically shaped, and by providing at the top of the stay member a ratchet-latching mechanism so that tension on the jib halyard can be released thereby facilitating a swivel coupling attachment of the halyard to the head of the jib.
Claims4
Jib-setting apparatus comprising:
- a wire tension member;
- a series of similar tubular extrusions adapted to fit over said wire, each of said extrusions being grooved on opposite sides thereof;
- on one side of said series of tubular extrusions, a first series of extrusions each having a portion of generally C-shaped cross-section forming an elongate slot, the extrusions in said first series being grooved to engage and lock onto the grooves on said one side of the tubular extrusion with the abutting ends of extrusions in said first series being staggered with the abutting end of said series of tubular extrusions;
- and
- on the opposite side of said series of tubular extrusions, a second series of extrusions each having a portion of generally C-shaped cross-section forming an elongate slot, the extrusions in said second series being grooved to engage and lock onto the grooves on said other side of the tubular extrusion with the abutting ends of extrusions in said second series being staggered with the abutting end of said series of tubular extrusions.
2 more elements
Sail-raising apparatus comprising:
- a wire tension headstay member;
- a series of similar tubular extrusions adapted to fit over said wire, each of said extrusions being grooved on opposite sides thereof;
- on one side of said series of tubular extrusions, a first series of extrusions each having a portion of generally C-shaped cross-section forming an elongate slot, the extrusions in said first series being grooved to engage and lock onto the grooves on said one side of the tubular extrusion with the abutting ends of extrusions in said first series being staggered with the abutting end of said series of tubular extrusions;
- on the opposite side of said series of tubular extrusions, a second series of extrusions each having a portion of generally C-shaped cross-section forming an elongate slot, the extrusions
- in said second series being grooved to engage and lock onto the grooves on said other side of the tubular extrusion with the abutting ends of extrusions in said second series being staggered with the abutting ends of said series of tubular extrusions;
- means for mounting said headstay member with respect to the bow and mast of a sailboat with which the apparatus is used, to permit rotation of said extrusions around said headstay member;
- a carrier slidably along said extrusions and rotatable therewith, said carrier having means for attachment of the head of a jib to permit hoisting of the jib with the carrier;
- swivel means rotatably mounted on said carrier and including means for attaching a halyard for hoisting said carrier;
- at the upper end of said stay member, a rack comprising a member, nominally of circular cross-section, fitting within said C-shaped slot, said rack member having a series of notches therein facing outwardly;
- and
- on said carrier, a pawl for engaging said rack thereby to permit tension on said halyard to be released while said jib is held up under tension borne by said extrusions, whereby said extrusions may be rotated with a jib hoisted without twisting said halyard, the halyard being unloaded.
8 more elements
Dependencies are inferred from the claim text.