Ships – Sail or control means therefor – Reefing and furling
Patent
1997-12-22
1999-04-06
Swinehart, Ed L.
Ships
Sail or control means therefor
Reefing and furling
114107, B63H 904
Patent
active
058904476
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an arrangement for a sailing boat which exhibits a jib furling system comprising a sail furling part extending between the hull and mast of the boat, which sail furling part is rotatably driven by means of a manually actuated operating line which drives a drive part that is connected to the aforementioned sail furling part to achieve furling of the foresail around the aforementioned rotatable sail furling part, and so that unfurling of the sail from the aforementioned sail furling part is possible, in conjunction with which a planetary gear is arranged between the aforementioned drive part and the rotatable sail furling part, which planetary gear is provided with devices to permit gearing to be achieved between the aforementioned drive part and the rotatable sail furling part.
2. Description of the Prior Art
Jib furling gear on boats is already known from the middle of the 1970s. In view of the constant increase in the size of boats, there is an increasing need to be able to handle the large foresails and similar sails which they carry, and which it is wished to furl onto and unfurl manually from the associated sail furling part, in spite of the fact that increasingly great force is required for this purpose.
An attempt has been made to solve the aforementioned problem of the force required by increasing the width of the winding drum. This has resulted in a restriction in the space available on deck, however, which is not advantageous given the wish to retain the largest possible free space on deck at the bows in order, amongst other things, not to obstruct free passage to and from the boat.
The jib furling drive arrangement previously disclosed in DE 3001527 A1 comprises a planetary gear. A planetary gear accommodated internally in a drive part executed as a line pulley is supported mounted on a radially extending disc-shaped flange, which is securely attached to a sleeve capable of rotating externally about a stay. The previously disclosed arrangement is complicated, however, and does not permit simple assembly and dismantling of the constituent parts. A clamping arrangement for stays or wires is also difficult to accommodate internally within the arrangement.
The principal object of the present invention is, therefore, in the first instance, to make available an arrangement of the aforementioned kind with which it is possible to solve the aforementioned problems simply and effectively.
SUMMARY OF THE INVENTION
The aforementioned objective is achieved by means of an arrangement in accordance with the present invention, which is characterized essentially in that an axially extending sleeve is arranged internally within the aforementioned arrangement and gear in such a way as to form a central shaft for the planetary carrier, in that the aforementioned central shaft is non-rotatably attached to the hull of the boat via the lower part of a lower end closure, in that the aforementioned central shaft functions as an attachment for the intended bearings which interact with the planetary carrier, sun wheel and drive part for the planetary gear, in that a sail attachment hook is rotatably mounted on the planet carrier on the upper part of the arrangement, and in that an anchoring part forms an attachment for a tensioned wire extending internally within a channel in the sail furling part accommodated between the hull and the mast.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention is described below as a preferred illustrative embodiment, in conjunction with which reference is made to the accompanying drawings, in which:
FIG. 1 shows a previously disclosed jib furling system installed on a boat and in use;
FIG. 2 shows a perspective view of an arrangement for a novel jib furling system; and
FIG. 3 shows a sectional view of the aforementioned arrangement.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
An arrangement 1 in accordance with the present invention, which is intended to be used in a sailing boat which exhibits
REFERENCES:
patent: 5632215 (1997-05-01), Moessnang et al.
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