GB2147261A

GB2147261A - A cable and chain stopper

Info

Publication number: GB2147261A
Application number: GB08424580A
Authority: GB
Inventors: Johannes Josephus Mampaey
Original assignee: Individual
Current assignee: Individual
Priority date: 1983-09-29
Filing date: 1984-09-28
Publication date: 1985-05-09
Also published as: GB8424580D0; NL180296C; FI843796L; GB2147261B; FI843796A0; NL180296B; NO843932L; NO156442C; FI75408B; FI75408C; NL8303343A; KR900002408B1; KR850002424A; CA1233757A; NO156442B

Abstract

A stopping device, such as a cable and chain stopper on a vessel or the like, is fitted with a fork-shaped stopping member (14) having a lead portion, and is connected to means for lifting the stopping member to above and lowering the same to below a specific level, in the present case a deck. The fork-shaped member is provided with a movable slotted rotary disc (17) adapted to be locked in a plurality of positions, and which is arranged in a well of the stopping member, downwardly of the lead portion. By having slots of different sizes the device can be used for cables or chains of different diameters. <IMAGE>

Description

SPECIFICATION A cable and chain stopper The invention relates to a stopping device, such as a cable and chain stopper on a vessel or the like, fitted with a fork-shaped stopping member having a lead portion and which is connected to means for lifting the stopping member to above and lowering the same to below a specific level, in the present case a deck.

Such a stopping device is known from Dutch patent application 81.05697, laid open to public inspection, which is based on Norwegian priority application 80,3852 of December 18, 1980. Such stopping devices are mainly used on vessels, drilling platforms, in ports and the like.

A similar but not movable stopping device is disclosed in US patent 3,507,243.

It is an object of the invention to improve the known stopping devices.

To this effect, a stopping device of the above mentioned type is characterized in that the forkshaped stopping member is fitted with movable slotted member. By designing slots of different sizes, the stopping device can be used for cables or chains of different diameters. As a result, the use of loose inserts, meanwhile known in practice, can be dispensed with.

The above slotted member may comprise a rotary disc adapted to be locked in a plurality of positions. The disc can be arranged in a well of the stopping member, downwardly of the lead portion.

In a further embodiment of the invention, there may be provided means for locking the disc, consisting of wells made in the disc and corresponding with the different locking positions, said wells being engageable with a spring-actuated ball, catch or the like arranged at least partly in said well.

The stopping device according to the invention may be fitted with a movable plate-like catch disposed in the well, which extends normally in the attachment path of the cable or chain.

The catch plate may be designed in such a way that the portion forming the catch proper comprises an offset portion attached to the catch plate, said portion extending in the locking position over the leading disc slot.

The catch plate can be urged into the above normal position by means of a counterweight and/or a spring supported in the well.

One embodiment of the stopping device according to the invention will now be described, by way of example, with reference to the accompanying drawings, in which: Figure 1 is a diagrammatic cross-section of a cable and chain stopper arranged on a vessel; Figure 2 shows an enlarged detail of the device shown in Figure 1 and on the line ll-ll of Figure 4; Figure 3 is a view on the line Ill-Ill of Figure 2; and Figure 4 is a cross-section on the line IV-IV of Figure 2.

According to the drawings, a cable and chain stopper is fitted with an outer pipe 2 installed in a deck 1 of a ship, wherein an inner pipe 3 is adapted for up and down movement. The inner pipe 3 is fitted at its top with a head 4.

The inner pipe 3 accommodates a cross rod 5 engaged by a piston rod 6 of a piston-and-cylinder assembly 7, of which Figure 1 only shows the lower part. The lower end of the piston-and-cylinder assembly operative by means, not shown, is connected through a fork construction to a bottom plate 9.

The latter in turn is fixedly connected to the lower end of a lower portion 10 of smaller wall thickness of the outer pipe 2. For the purpose of a proper guidance, the inner pipe 3 is fitted with a pin 31 extending into a slot 32 provided in the outer pipe 2 and the lower portion 10 thereof.

As shown in Figure 1, the portion of head 4 connected to the inner pipe 3 is fitted exteriorly with a seal 13 and a dirt scraper 12.

The head 4 is fitted with an upper lead portion 14 with a slot 28 linking up therewith, as well as a central well 15 accommodating side by side a disc 17 containing slots 16 and a catch plate 18.

The disc 17 comprises a square passage for receiving a pin 19 having a corresponding square 19' and two cylindrical portions 19' and 19" linking up therewith. As shown in Figure 4, the pin 19 is confined at the one end with a circlip 20, while the other end is fitted with a square 21 engageable with a wrench, not shown.

The catch plate 18 is hook-shaped, while the portion 22 forming the catch portion proper is offset and attached in such manner to the other portion of the catch plate that this portion 22 extends, in operation, over the then leading slot 16 of the disc 17 by which the slot is subtantially shut off.

As shown in Figure 2, the catch plate 18 is hookshaped and rotatably mounted by means of a noncontinuous shaft 23. Against the bottom of the catch plate there lies a leaf spring, not shown, supported in the central well 15, said spring ensuring a repeated return of the catch plate in the locking position.

The locking of the slotted disc 17 takes place by means of a ball 24, which is maintained through a spring 25 in abutment with one of the wells 26, each corresponding with a slot 16. The spring 25 is adjustable by means of a set screw 27.

Naturally, all kinds of other means are also possible for retaining the slotted disc 17 and the catch plate 18 in the desired position.

For the sake of completion, it is mentioned that the lead portion 14 adjacent the connection to the slot 28, is fitted with an offset portion 29 adapted to receive the socket of a cable, not shown.

The top end of the head 4 is furthermore provided with an opening 30 for receiving a locking pin, not shown.

It is finally observed that many modifications are possible without departing from the scope of the invention.

1. A stopping device, such as a cable and chain stopper on a vessel or the like, comprising a fork

**WARNING** end of DESC field may overlap start of CLMS **.

Claims

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION A cable and chain stopper The invention relates to a stopping device, such as a cable and chain stopper on a vessel or the like, fitted with a fork-shaped stopping member having a lead portion and which is connected to means for lifting the stopping member to above and lowering the same to below a specific level, in the present case a deck. Such a stopping device is known from Dutch patent application 81.05697, laid open to public inspection, which is based on Norwegian priority application 80,3852 of December 18, 1980. Such stopping devices are mainly used on vessels, drilling platforms, in ports and the like. A similar but not movable stopping device is disclosed in US patent 3,507,243. It is an object of the invention to improve the known stopping devices. To this effect, a stopping device of the above mentioned type is characterized in that the forkshaped stopping member is fitted with movable slotted member. By designing slots of different sizes, the stopping device can be used for cables or chains of different diameters. As a result, the use of loose inserts, meanwhile known in practice, can be dispensed with. The above slotted member may comprise a rotary disc adapted to be locked in a plurality of positions. The disc can be arranged in a well of the stopping member, downwardly of the lead portion. In a further embodiment of the invention, there may be provided means for locking the disc, consisting of wells made in the disc and corresponding with the different locking positions, said wells being engageable with a spring-actuated ball, catch or the like arranged at least partly in said well. The stopping device according to the invention may be fitted with a movable plate-like catch disposed in the well, which extends normally in the attachment path of the cable or chain. The catch plate may be designed in such a way that the portion forming the catch proper comprises an offset portion attached to the catch plate, said portion extending in the locking position over the leading disc slot. The catch plate can be urged into the above normal position by means of a counterweight and/or a spring supported in the well. One embodiment of the stopping device according to the invention will now be described, by way of example, with reference to the accompanying drawings, in which: Figure 1 is a diagrammatic cross-section of a cable and chain stopper arranged on a vessel; Figure 2 shows an enlarged detail of the device shown in Figure 1 and on the line ll-ll of Figure 4; Figure 3 is a view on the line Ill-Ill of Figure 2; and Figure 4 is a cross-section on the line IV-IV of Figure 2. According to the drawings, a cable and chain stopper is fitted with an outer pipe 2 installed in a deck 1 of a ship, wherein an inner pipe 3 is adapted for up and down movement. The inner pipe 3 is fitted at its top with a head 4. The inner pipe 3 accommodates a cross rod 5 engaged by a piston rod 6 of a piston-and-cylinder assembly 7, of which Figure 1 only shows the lower part. The lower end of the piston-and-cylinder assembly operative by means, not shown, is connected through a fork construction to a bottom plate 9. The latter in turn is fixedly connected to the lower end of a lower portion 10 of smaller wall thickness of the outer pipe 2. For the purpose of a proper guidance, the inner pipe 3 is fitted with a pin 31 extending into a slot 32 provided in the outer pipe 2 and the lower portion 10 thereof. As shown in Figure 1, the portion of head 4 connected to the inner pipe 3 is fitted exteriorly with a seal 13 and a dirt scraper 12. The head 4 is fitted with an upper lead portion 14 with a slot 28 linking up therewith, as well as a central well 15 accommodating side by side a disc 17 containing slots 16 and a catch plate 18. The disc 17 comprises a square passage for receiving a pin 19 having a corresponding square 19' and two cylindrical portions 19' and 19" linking up therewith. As shown in Figure 4, the pin 19 is confined at the one end with a circlip 20, while the other end is fitted with a square 21 engageable with a wrench, not shown. The catch plate 18 is hook-shaped, while the portion 22 forming the catch portion proper is offset and attached in such manner to the other portion of the catch plate that this portion 22 extends, in operation, over the then leading slot 16 of the disc 17 by which the slot is subtantially shut off. As shown in Figure 2, the catch plate 18 is hookshaped and rotatably mounted by means of a noncontinuous shaft 23. Against the bottom of the catch plate there lies a leaf spring, not shown, supported in the central well 15, said spring ensuring a repeated return of the catch plate in the locking position. The locking of the slotted disc 17 takes place by means of a ball 24, which is maintained through a spring 25 in abutment with one of the wells 26, each corresponding with a slot 16. The spring 25 is adjustable by means of a set screw 27. Naturally, all kinds of other means are also possible for retaining the slotted disc 17 and the catch plate 18 in the desired position. For the sake of completion, it is mentioned that the lead portion 14 adjacent the connection to the slot 28, is fitted with an offset portion 29 adapted to receive the socket of a cable, not shown. The top end of the head 4 is furthermore provided with an opening 30 for receiving a locking pin, not shown. It is finally observed that many modifications are possible without departing from the scope of the invention. CLAIMS

1. A stopping device, such as a cable and chain stopper on a vessel or the like, comprising a fork shaped stopping member having a lead portion, and which is connected to means for lifting the stopping member to above and lowering the same to below a specific level, in the present case a deck, characterized in that the fork-shaped stopping member is fitted with a movable slotted member.

2. A stopping device according to claim 1, characterized in that the movable member is a rotary disc adapted to be locked in a plurality of positions.

3. A stopping device according to claim 1 or 2, characterized in that the disc is arranged in a well of the stopping member downwardly of the lead portion.

4. A stopping device according to claim 2 or 3, characterized by means for locking the disc, comprising wells provided in the disc and corresponding with the various locking positions, said wells being engageable with a spring-actuated ball, catch or the like arranged at least partly in said well.

5. A stopping device according to any one of the preceding claims, characterized by a plate-like catch movably arranged in the well.

6. A stopping device according to claim 5, characterized in that the catch plate is influenced by a counterweight.

7. A stopping device according to claim 5 or 6, characterized in that the catch plate is influenced by a spring supported in the well.

8. A stopping device according to claim 5, 6 or 7, characterized in that the portion forming the catch proper comprises an offset portion attached to the catch plate, said portion extending in the locking position over the leading disc slot.