JPS6037915Y2 - sail - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to sails for sailing ships.

Conventionally, the sails used on large sailing ships are stretched using many ropes, and due to material constraints, the size of the sails cannot be increased too much due to strength reasons, making it difficult to deploy and store the sails. required a great deal of effort.

The present invention was proposed in view of these circumstances, and aims to provide a sail that can be increased in size and that is easy to deploy and store. and a boom whose base end is pivotally attached to a gooseneck protruding near the base end of the mast, and a main stay stretched between the top end of the mast and the tip of the boom. is a S゛ triangular sail, which is made up of a plurality of approximately triangular sail blades whose adjacent sides are flexibly connected to each other; The present invention is characterized in that the sail member is provided with a substantially triangular fan-shaped sail member whose latch is pivotally attached and extendable and retractable within a triangle formed by the mast, the boom, and the main stay.

An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front view thereof, and FIG. 2 is a partially enlarged view taken along the lower part of FIG.

In the above figure, 1 is a mast established on the mast house 2 of the hull 3, 4 and 4 are a plurality of approximately triangular sail blades, and the lower end of each sail blade is an eye plate 13. Pin 14.
The mast house 2 near the base of the mast 1 is connected to the mast house 2 through connecting hardware 8 and 9 consisting of sharks and pins 15° and connecting hardware 16.
Both ends of the opposite side opposite the lower end are connected to the main stay 5, which will be described later, via substays 6, 6, etc., and the adjacent side of each adjacent sail blade has a plurality of blades arranged at appropriate intervals. are connected to each other by a connecting hardware 7.

The long side of the uppermost sail blade 4' extending along the mast 1 is connected to the mast 1, and the long side of the lowermost sail blade 4'' extending along the boom 10 is connected to the boom 10 at appropriate intervals. They are connected via metal fittings 7.

5 is a main stay stretched between the upper end of the mast 1 and the tip of the boom 10; 6 is a plurality of substays made of cables or chains that connect opposite ends of each blade 4 to the main stay 5; 7 is a main stay stretched between the upper end of the mast 1 and the tip of the boom 10; A plurality of connecting hardware connects the adjacent sides of adjacent blades 4, 4 to each other at appropriate intervals, and reference numeral 10 denotes a boom whose lower end is pivoted to a gooseneck hardware 11 protruding from the mast house 2 near the base of the mast 1. , 12 are supporting hardware that protrude from the mast house 2 and support the boom 10.

In such a sail, as shown in Figure 1, in the unfolded state, the wind pressure load is applied almost equally to each blade, and this is supported at both ends of the blade tip and base. Each blade 4
It is only necessary to have a tensile strength that is commensurate with the wind pressure.

Therefore, if synthetic resin or light alloy is used as the material, the strength is greater than that of canvas, so the size of each blade can be increased.

Furthermore, since each blade is deployed by the weight of the boom 10, rope work for deploying the sail is not necessary.

To store the sail, the boom 10 is connected via a sling (not shown).
When the tip is pulled up and brought into position along the mast 1, each blade is pivoted around its lower end, folded and automatically retracted.

The effects of the present invention are listed below.

(1) Expanding and storing the sails is simple and easy, and the associated work is greatly reduced in labor.

(2) Since the sail is constructed by combining a plurality of blades, even if it is constructed into a large sail, it does not require a large storage space or manufacturing space.

(3) Since each blade is supported at both ends, it can be made larger if light alloy or synthetic resin is used as the material.

(4) Since it can be stored in front and behind the mast, it can be used in conjunction with a normal derrick device.

(5) Since the sail is deployed and retracted by rotating the boom up and down in a vertical plane around the base end, the substay can be deployed and retracted at the same time.

In short, according to the present invention, there is provided a mast established on the upper deck, a boom pivotally connected to a gooseneck whose base end protrudes near the base end of the mast, and the upper end of the mast and the tip of the boom. The sail is made up of a plurality of substantially triangular blades whose adjacent sides are visibly connected to each other, and the sail is stretched between the main stay and the base of the mast. Connecting the pivot parts of the boom is a substantially triangular fan-shaped structure whose pivot part is pivoted on the horizontal axis S' and which is extendable and retractable within the triangle formed by the mast, the boom, and the main stay. By providing a sail member, a strong sail that is easy to deploy and store is obtained, so the present invention is extremely useful industrially.

[Brief explanation of drawings]

Fig. 1 is a front view showing one embodiment of the present invention, and Fig. 2 is a front view showing an embodiment of the present invention.
It is a partial enlarged view along ■-H at the bottom of the figure. 1...mast, 2...mast house,
3... Hull, 4.4', 4''-... Blade, 5... Main stay 6... Sub stay 7... Connecting hardware , 8, 9...Connecting hardware, 10...Boom, 12...Supporting hardware, 13...Eye plate, 14...
・Pin, 15... Sharkle and pin, 16・
...Connection hardware.

Claims (1)

[Scope of utility model registration request] A mast erected on the upper deck, a boom whose base end is pivotally attached to a gooseneck protruding near the base end of the mast, and a boom stretched between the top end of the mast and the tip of the boom. A S゛-triangular sail stretched between the main stay and the sail is made up of a plurality of approximately triangular sail blades whose adjacent sides are flexibly connected to each other, each of which connects the base of the mast and the pivot point of the boom. The tie is characterized by comprising a sail member in the shape of a substantially triangular fan, whose latch is pivoted on the horizontal axis and is extendable and contractible within a triangle formed by the mast, the boom, and the main stay. A sail.