US3763815A

US3763815A - Ship drawing and staying device

Info

Publication number: US3763815A
Application number: US00235662A
Authority: US
Inventors: T Hodate
Original assignee: SUGIUE KENKI KK; SAGITA SANGYO KK
Current assignee: SUGIUE KENKI KK; SAGITA SANGYO KK
Priority date: 1972-03-17
Filing date: 1972-03-17
Publication date: 1973-10-09
Anticipated expiration: 1990-10-09

Abstract

Apparatus for securing the mooring rope of a ship has an elongated carrier frame whose one end is mounted on the horizontal supporting surface of a wharf by means of a pivot which permits movement of the carrier frame about a horizontal, transverse axis near the mounted end. A hook is pivoted to the other, free end of the carrier frame for movement between a first position in which its bight is open toward the mounted end of the frame and a second position in which the bight is open in the opposite direction, the bight being spaced from the pivot axis of the hook so that a rope held in the hook in the first position tends to turn the hook into its second position, such movement being prevented by a releasable locking mechanism. A cam mechanism partly on the hook and partly on the carrier frame moves the free end of the carrier and the hook thereon upwardly away from the supporting surface when the hook moves from the first to the second position.

Description

United States Patent [191 Hodate [451 Oct. 9, 1973 [73] Assignees: Sagita Sangyo Kabushiki Kaisha,

Tokyo; Sugiue Kenki Kabushiki Keisha, Takamatsu-City, both of Japan; part interest to each Tomoshi Hodate, Tokyo, Japan 22 Filed: Mar. 17,197: 21 App1.No.: 235,662

[52] US. Cl. 114/230, 24/115 R [51] lnL'Cl. B63b 21/04 [58] Field of Search 114/230, 235 A, 216,

114/217, 210; 244/115, 116; 213/89; 280/480; 74/55; 24/134 KB, 134 KC, 132 CH, 241 P, 241 PP, 123 H, 123 E, 115 B,

Primary Examiner-George E. A. Halvosa Assistant Examiner-Edward R. Kazenske Att0rney-Kurt Kelman et al.

[ ABSTRACT Apparatus for securing the mooring rope. of a ship has an elongated carrier frame whose one end is mounted on the horizontal supporting surface of a wharf by means of a pivot which permits movement of the carrier frame about a horizontal, transverse axis near the mounted end. A hook is pivoted to the other, free end of the carrier frame for movement between a first position in which its bight is open toward the mounted end of the frame and a second position in which the bight is open in the opposite direction, the bight being spaced from the pivot axis of the hook so that a rope held in the hook in the first position tends to turn the hook into its second position, such movement being prevented by a releasable locking mechanism. A cam mechanism partly on the hook and partly on the carrier frame moves the free end of the carrier and the hook thereon upwardly away from the supporting surface when the hook moves from the first to the second position.

3 Claims, 3 Drawing Figures PATENTED 9 5 SHIN 30? 3 SHIP DRAWING AND STAYING DEVICE This invention relates to an improved ship mooring device, more particularly it relates to an improved device for securing aship to a wharf by means of a rope.

Since a ship mooring rope must withstand to rocking of a ship, it must be very strong. The other elements constitutingthe ship mooring device are required to be heavy. The rope is also large in diameter and heavy so as not to be cut easily by the rocking of the ship Therefore, engagement of the ship mooring rope to a known rope securing device requires much labour andmay be dangerous.

Further, since the conventional rope securing device and the rope itself are heavy as described above, rapid .engagement and disengagement is not possible. This is .very disadvantageous especially in an emergency.

It is therefore a general object of this invention to provide an improved rope securing device which avoids these disadvantages.

This invention is directed to a rope securing apparatus comprising an elongated hook supporting member or carrier having one endpivotally mounted on the horizontal supporting surface of a wharf, a hook pivotally attached to the other end of said hook supporting member, a mechanism for locking of unlocking said hook, and a cam mechanism for raising said hook from the wharf surface in response to its pivoting movement. The construction and operation of the apparatus this invention will be understood readily by reference to the following detaileddescription and the attached drawings; in which a FIG. 1 is a plan view of a rope securing device ac- :cording to the invention 'in the locked condition,

FIG. 2 isasectional view of the device shown in FIG. .1 taken along line lIll and FIG. 3 shows the device of'FlG. 2 in-the unlocked condition.

Theillustrated rope securing apparatus includes an elongated carrier frame 1 whose two longitudinal, plateshaped members ,2 are-fixedly connected at one end by a heavy shaft 3 to each other, and jointly connected to a pivot assembly including a heavy base 4 mounted on the horizontal supporting surface G of a wharf, nototherwise shown. An integral L- shaped arm 5 projects upward from the base 4 and forms therewith aclevis having-an uprightpin ,6. A shackle 7 hingedly connects thepin6 to the shaft 3 so that the frame 1 can pivot about the vertical axis of the pin 6 and the horizontal, transverse axis of the shaft 3.

The free other end of the carrier frame 1 pivotally supports a hook8 on a shaft 9 connecting the members '2 and parallel to the shaft 3. The hook may be locked in the first position shown in FIGS. 1 and2 by a locking mechanism 10 which includes 'an abutment pin 11 journaled in the frame members 2. The hook 8 is held in its first position by abutment of a flat face on its longer leg against a flat on the otherwise cylindrical pin 11. The

tension of a rope 23, shown in phantom view in FIGS. land 2 in the bight of the hook 8, tends to pivot the hook 8 clockwise and thereby to turn thepin l1 counterclockwise out of the path of the hook into its inoperative position shown in FIG. 3.

The locking mechanism further includes a radial arm '12 fixed on the pin 11. In the position of FIG. 2, the arm 12 is engaged by a detent on one arm of a rocker 13. The rocker is attached to one of the frame members 2 by a pin 14 at its fulcrum. From a pneumatic cylinder 15, a piston rod 16 projects into abutting engagement with the other arm of the rocker 13, the cylinder 15 being attached to the same member 2 as the pin 14 by a fastener 17.

The pressure of the hook 8 caused by the tension of the rope 23 holds the arm 12 in engagement with the rocker l3, and the latter in engagement with the piston rod 16. When the cylinder 15 is energized, the detent l3 releases the arm 12, and the hook 8 can turn the abutment pin into its inoperative position, so that the tension of the rope 23 causes clockwise movement of the hook into the second position seen in FIG. 3 in which the bight of the hook is open away from the base 4, and the rope can escape freely.

During the pivoting movement of the hook into the second position, the free end of the carrier frame 1 and the hook 8 mounted thereon are moved upward and away from the surface G by a cam-operated mechanism 18 against the weight of the hook which biases the carrier frame 1 toward the surface G.

The mechanism 18 includes a shaft 19 transverse to the frame 1 and journaled in the members 2. Two radial arms 20 are fastened to the shaft 19, and their free ends are connected by a shaft 21 enveloped by a roller 22. The outer arcuate face of the hook 8 spirals ,away from the pivot axis of the hook toward the free end of the shorter hook leg. It cammingly engages the roller 22 to move the mechanism 18 from the retracted position of FIG. 2 into the position of FIG. 3 in which it projects downward from the carrier frame 1, and thereby raises the free end of the frame.

Return of the hook 8 from the second position .Of FIG. 3 into the first position of FIG. 1, as indicated by a curved arrow in FIG. 3, is facilitated by the simultaneous downward movement of the hook 8 and the frame 1. A rounded face at the free end of the hook 8 first engages the flat of the abutment pin 11, thereby turning the pin into itsoperative position, and the resulting engagement of the arm 12 with the rocker 13 returns the locking mechanism to its intitial condition when the cylinder 15 has previously been set as is shown in FIG. 2. 1

Since the hook is pivoted by the tension of the rope after release of the locking mechanism, rapid release of the rope is achieved without requiring any other mechanical devices. When the mechanism 18 is moved towards the surface G by the pivoting hook, the free end of the carrier frame and the hook are raised, and the a potential energy of the rope securing device as a whole is increased. Thus the hook is returned to the locked condition by the weight of the hook and the of the other elements of the device without requiring much manual labour after release of the rope.

I claim:

1. A rope securing apparatus comprising, in combination:

a. an elongated carrier;

b. pivot means for mounting one longitudinal end of said carrier on a horizontal supporting surface for movement of said carrier about a first axis adjacent said one end, said axis extending horizontally and transverse to the direction of elongation of said carrier;

c. a hook secured to the other longitudinal end of said carrier for pivoting movement about a second axis substantially parallel to said first axis between a first position in which the bight of said hook is open toward said one end and a second position in which said bight is open away from said one end,

said bight being spaced from said second axis, and

the weight of said hook biasing said carrier toward said supporting surface;

d. releasable locking means for locking said hook in said first position thereof; and

e. cooperating cam means on said hook and on said carrier, said cam means being responsive to movement of said hook from said first position to said second position for moving said other end upward and away from said supporting surface against the biasing weight of said hook,

I. said cam means including arm means pivotally mounted on said carrier for vertical movement between a retracted position and a projecting position,

2. said arm means in the projecting position extending beyond said carrier toward said surface,

locking means include an abutment member pivotally mounted on said carrier for movement between an operative position in which said abutment member is in the path of said hook from said first to said second position of said hook and thereby holds the hook in said first position against the tension of a rope retained in said bight, and an inoperative position in which said hook clears said abutment member, engaging means on said hook tending to pivot said abutment member from said operative toward the inoperative position in response to said tension, and detent means for releasably securing said abutment member in said operative position.

3. An apparatus as set forth in claim 1, wherein said arm means include an arm member having two end portions and a roller member, one end portion of said arm member being pivotally fastened to said carrier, and said roller member being mounted on the other end portion of said arm member for camming engagement with said face of said hook and for engagement with said surface in the projecting position of said arm means.

UNITED STATES PATENT OFFICE I CERTIFICATE OF CORRECTION Patent No. ,815 Dated October 9, 1973 Invent r s TOMOSHI nonmn It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:

= In the heading, line 172 7, Change "Sagita" to Sugita Signed and sealed this 1st day of January 197A.

(SEAL) Attest:

EDWARD M.FLETCHER,JR. V RENE D; TEGTMEYER Attesting Officer Acting Commissioner of Patents FORM Po-105o (10-69) I U.S. GOVERNMENT PRINTING OFFICE: I989 O--366-3M, I

Claims

1. A rope securing apparatus comprising, in combination: a. an elongated carrier; b. pivot means for mounting one longitudinal end of said carrier on a horizontal supporting surface for movement of said carrier about a first axis adjacent Said one end, said axis extending horizontally and transverse to the direction of elongation of said carrier; c. a hook secured to the other longitudinal end of said carrier for pivoting movement about a second axis substantially parallel to said first axis between a first position in which the bight of said hook is open toward said one end and a second position in which said bight is open away from said one end, said bight being spaced from said second axis, and the weight of said hook biasing said carrier toward said supporting surface; d. releasable locking means for locking said hook in said first position thereof; and e. cooperating cam means on said hook and on said carrier, said cam means being responsive to movement of said hook from said first position to said second position for moving said other end upward and away from said supporting surface against the biasing weight of said hook, 1. said cam means including arm means pivotally mounted on said carrier for vertical movement between a retracted position and a projecting position, 2. said arm means in the projecting position extending beyond said carrier toward said surface, 3. said hook having a face cammingly engaging said arm means and moving the same from the retracted into the projecting position when said hook moves from said first to said second position thereof.

2. An apparatus as set forth in claim 1, wherein said locking means include an abutment member pivotally mounted on said carrier for movement between an operative position in which said abutment member is in the path of said hook from said first to said second position of said hook and thereby holds the hook in said first position against the tension of a rope retained in said bight, and an inoperative position in which said hook clears said abutment member, engaging means on said hook tending to pivot said abutment member from said operative toward the inoperative position in response to said tension, and detent means for releasably securing said abutment member in said operative position.

3. said hook having a face cammingly engaging said arm means and moving the same from the retracted into the projecting position when said hook moves from said first to said second position thereof.