Sequetial coiling of a rope by segments

Abstract

A method for sequentially coiling a rope by segments, comprising the steps of attaching a first grab in a rope to the lower rim of a cylindrical mandrel; rotating the mandrel about a vertical axis and forming a plurality of coils including a last coil on the mandrel; stopping a rotation of the mandrel; releasing the first grab and the plurality of coils from the mandrel into a basket rotating under the mandrel. While releasing the first grab, holding a second or subsequent grab along a tail end of the last coil on the mandrel, and repeating the above steps of attaching; rotating; forming; stopping; releasing; holding and repeating, with the second or subsequent grab, until an entire length of the rope has been coiled in the basket. In another aspect, a step of working the rope is carried out between the step of stopping and the step of releasing.

Claims

1. A machine for sequentially coiling a rope by segments, comprising: a cylindrical mandrel having a first vertical axis of rotation; a lower rim and a notch in said lower rim, for retaining a grab in a rope; a cylindrical basket having a second vertical axis of rotation extending co-axially with said first axis of rotation, under said mandrel; and a rope guide assembly for guiding a coiling of a rope on said mandrel; said rope guide assembly comprising a vertical drive shaft having a lead screw, a driven sleeve movable along said lead screw; a half-nut assembly in said driven sleeve for selectively engaging said lead screw, such that said rope guide is movable in a consistent manner along said lead screw.

2. The machine as claimed in claim 1, wherein said lead screw extends parallel with said axis of rotation of said mandrel.

3. The machine as claimed in claim 1, further comprising a drive shaft connected with said first vertical axis of rotation of said mandrel and said second vertical axis of rotation of said basket.

4. The machine as claimed in claim 3, wherein said lead screw is a portion of said drive shaft.

5. The machine as claimed in claim 4, further including a handle for selectively engaging said half-nut to said lead screw by hand.

6. The machine as claimed in claim 5, further including a frame, and wherein said rope guide assembly is guided on a guide post mounted between said drive shaft and a framing member of said frame.

7. The machine as claimed in claim 6, wherein said guide post extends parallel with said drive shaft.

8. The machine as claimed in claim 6, wherein said frame is a portion of a trailer.

9. The machine as claimed in claim 7, wherein said rope guide comprises a training sleeve sliding on said guide post.

10. The machine as claimed in claim 1, wherein said half-nut is urged against said lead screw by a spring.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The coiling of rope according to the preferred method of the present invention and the machine for carrying out this method are described herein below with reference to the attached drawings, in which:

(2) FIG. 1 is a partial perspective view of a machine used for carrying the method of sequentially coiling ropes by segments;

(3) FIG. 2 is an illustration of a rope being coiled according to the preferred method of the present invention;

(4) FIG. 3 is a partial perspective cross-section view of the rope guide mechanism as seen substantially along line 3-3 in FIG. 1;

(5) FIG. 4 is a partial perspective side view of the rope guide indexing mechanism as seen substantially along line 4-4 in FIG. 3.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

(6) Referring to FIGS. 1 and 2, the machine 20 that is used for carrying out the method according to the preferred invention comprises a driven mandrel 22 and a driven basket 24. Both the mandrel 22 and the basket 24 rotate co-axially in unison for being entrained by a common drive shaft 26. As can be understood, the drive shaft 26 is connected by belts and sheaves 28, 28 to both the axle of the mandrel 22 and the axle (not shown) of the basket 24. A motor and gearbox 30 are connected to the axle of the mandrel 22 and drive both the mandrel 22 and the drive shaft 26 by way of the upper set of V-belt and sheave 28. A lower set of sheave and V-belt 28 drives the basket 24.

(7) A rope guide assembly 32 is movable up and down along the drive shaft 26, on a lead screw 34 portion of the drive shaft 26. The rope guide assembly 32 is selectively engaged to the lead screw 34, as will be explained later. The rope guide assembly 32 is also guided along a guide post 36.

(8) The mandrel 22 has a vertical axis of rotation and downward tapered shape. The lower rim 38 of the mandrel 22 has a notch 40 therein for retaining a grab 50 in a rope. In use, the grab 50 in the rope is inserted in the notch 40 and the mandrel 22 is rotated. In use, the rope guide assembly 32 moves upward, supporting the incoming portion of rope, and guiding the rope onto the mandrel 22 to form tight coils on the mandrel 22. The rope guide assembly 32 moves upward along the lead screw 34 as the mandrel 22 rotates to ensure that the coils are tightly formed and tightly laid one above the other on the mandrel 22.

(9) When the rope is wound to the top of the mandrel 22 or as desired, the motor is stopped and the bottom coil of rope with the first grab 50 are slid off the notch 40, letting all the coils 52 on the mandrel 22 to fall down into the basket 24.

(10) It will be appreciated that the number of coils formed on the mandrel 22 in one sequence represents, for examples, the length of rope between two lobster cages, between two snow crab cages, or between two mussel culture ropes. Coiling is interrupted to work the rope; to detach cages or fishing equipment from the rope, before coiling is resumed.

(11) Simultaneously with releasing a first grab 50 from the notch 40 and sliding off the coils 52 from the mandrel 22 into the basket 24, a second grab 60 along a tail end A of the last coil 54 on the mandrel 22 rope is inserted in the notch 40, and another segment of rope is wound onto the mandrel 22. This sequence is repeated until the entire length of the rope has been coiled.

(12) The machine 20 illustrated herein is mounted on a trailer frame 42. However, this machine can be fixed to the deck of a boat or mounted on a skid or a dolly which can be moved in and out of storage when needed.

(13) Referring specifically to FIG. 2, the method for sequentially coiling a rope according to the preferred embodiment of the present invention will be explained.

(14) This method is effected as follows:

(15) attaching a first grab 50 in a rope to a notch 40 on the lower rim of a cylindrical mandrel 22;

(16) rotating the mandrel 22 about a vertical axis and forming a plurality of coils 52 including a last coil 54, on the mandrel 22;

(17) rotating a basket 24 under the mandrel 22, at the same speed as the mandrel 22 co-axially with the mandrel 22;

(18) while rotating the mandrel 22 and the basket 24, guiding the rope and forming the plurality of coils 52 on the mandrel 22 such that this plurality of coils 52 are closely laid on top of one another and resting upon the first grab 50;

(19) stopping a rotation of the mandrel 22 and the basket 24;

(20) releasing the first grab 50 from the mandrel 22, causing the first grab 50 and the plurality of coils 52 to fall down from the mandrel 22 and into the basket 24;

(21) while releasing the first grab 50, holding a second or subsequent grab 60 along a tail end A of the last coil 54 on the mandrel 22, and repeating the above steps of attaching; rotating; guiding and forming; stopping; releasing; causing; holding and repeating, with the second or subsequent grab 60, until the entire length of the rope has been coiled in the basket.

(22) Because the tail end 62 of the last coil 64 that was dropped in the basket 24 has already been wound about the mandrel 22 in a previous segment, this tail end 62 has the exact arc length required to precisely overlap the previous coil 64. Similarly, the tail end A of the coil 54 just formed has the exact arc length required to thread over and precisely overlap the last coil falling in the basket 24. Therefore, the exact position of the second grab 60 along the tail end A is not critical.

(23) When the second grab 60 is selected in the tail end region A of the top coil 54, the entire rope is being coiled in the basket 24 without disruption to the symmetry of its coils. In a preferred embodiment, the mandrel 22 has dimensions to accept thereon about 150 feet of rope at the time.

(24) While the first grab 50 is usually close to the leading end of a rope, the second and subsequent grabs 60 are at intermediate regions between the coiling segments or intervals of the rope. A coiled rope can be taken from the basket and laid on a deck. With a bit of practice in selecting the location of the second and subsequent grabs 60, within the tail end A, the rope coiled by this method has a same appearance as one coiled by hand by an experienced sailor.

(25) Referring now to FIGS. 3 and 4, the rope guide assembly 32 will be described. The rope guide assembly 32 has a rope guide 70 which is made of spaced apart vertical short cylinders to guide a rope horizontally, and a curved nosing bar for supporting a rope vertically. The rope guide 70 is guided in a vertical movement by a training sleeve 72 mounted to the guide post 36. For reference purposes, the guide post 36 is parallel to and held firm relative to the frame member 74 of the machine 20.

(26) The training sleeve 72 is connected to a driven sleeve 76 by a joiner member 78. The driven sleeve 76 is selectively engaged to the lead screw 34 of the drive shaft 26.

(27) Referring particularly to FIG. 4, the driven sleeve 76 has an opening 80 through the wall thereof, exposing the threads of the lead screw 34. A half-nut 82 is movable through that opening for selectively engaging the threads of the lead screw 34. A stem and a handle assembly 84 is connected to the half-nut 82. A spring 86 is mounted to this stem and handle assembly 84 for urging the half-nut 82 into an engagement with the lead screw 34.

(28) In use, the handle and stem assembly 84 is pulled away from the driven sleeve 76 to release the engagement of the half-nut 82 from the lead screw 34 to move the driven sleeve 76 from the top of the lead screw 34 to the bottom of the lead screw 34 for example, to start a new coil on the mandrel 22. It will be appreciated that an engagement of the half-nut 82 to the lead screw 34 drives the driven sleeve 76 and the rope guide assembly 32 upward at the right pitch speed of about one thickness of the rope per turn of the mandrel 22, for forming a tight coil of rope on the mandrel 22.