WO2003097440A1 - Rope hitch - Google Patents

Rope hitch Download PDF

Info

Publication number
WO2003097440A1
WO2003097440A1 PCT/AU2002/000622 AU0200622W WO03097440A1 WO 2003097440 A1 WO2003097440 A1 WO 2003097440A1 AU 0200622 W AU0200622 W AU 0200622W WO 03097440 A1 WO03097440 A1 WO 03097440A1
Authority
WO
WIPO (PCT)
Prior art keywords
rope
wedge
cam plates
mounting plate
rope hitch
Prior art date
Application number
PCT/AU2002/000622
Other languages
French (fr)
Inventor
Wayne Michael Radford
Maria Elisabeth Cunnington
Original Assignee
Wayne Michael Radford
Maria Elisabeth Cunnington
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wayne Michael Radford, Maria Elisabeth Cunnington filed Critical Wayne Michael Radford
Priority to PCT/AU2002/000622 priority Critical patent/WO2003097440A1/en
Priority to AU2002308406A priority patent/AU2002308406A1/en
Publication of WO2003097440A1 publication Critical patent/WO2003097440A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
    • B63B21/04—Fastening or guiding equipment for chains, ropes, hawsers, or the like
    • B63B21/08—Clamping devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G11/00—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes
    • F16G11/10—Quick-acting fastenings; Clamps holding in one direction only
    • F16G11/101—Quick-acting fastenings; Clamps holding in one direction only deforming the cable by moving a part of the fastener

Definitions

  • the present invention relates to rope tensioners and hitches of the type which can be used to tie down, support or haul loads.
  • a rope hitch comprising a mounting plate, opposed cam plates mounted on a major surface of the mounting plate, and a wedge fixed between the cam plates, the arrangement being such that a rope can be secured in a passages created between adjacent edges of the wedge and the cam plates to secure same with respect to remote tie-down or fixture points.
  • the cam plates and wedge can each have two principal edges meeting at an acute angle.
  • the wedge can be mounted and slidable on a mounting pin extending from the major surface of the mounting plate.
  • the wedge can be provided with a elongated pin slot which allows it to slide on the mounting pin to widen or narrow the passages between the cam plates and wedge to cater for different sizes of rope.
  • the block may be in form of a rope pulley.
  • the edges of the wedge, cam plates and the block can be fluted.
  • a plurality of opposed sets of cam plates and wedges may be mounted on the mounting plate.
  • FIGS. 1 and 2 are plan and perspective views of a hitch in accordance with one possible embodiment of the present invention.
  • Figure 3 is a plan view of the hitch of figures 1 and 2 having a rope engaged therewith, and
  • Figure 4 is a side view of the hitches of the present invention in use for securing a load
  • Figure 5 is a side view of the hitches of the present invention in use in a vehicle recovery situation
  • FIG. 6 is a plan view of an alternative form of rope hitch in accordance with another aspect of the present invention.
  • Figure 7 is a plan view of a further alternative form of rope hitch according to the present invention.
  • the present invention provides a rope hitch generally indicated by arrow 1 , the hitch comprising a mounting plate 2, opposed cam plates 3 mounted on one major surface 4 of the mounting plate 2, a wedge 5 fixed between the cam plates 3 and a rope block 6, mounted on the major surface 4 of the mounting plate 2 adjacent to the cam plates and wedge.
  • the cam plates 3 and wedge are provided with two principle edges 7 meeting at an acute angle.
  • the wedge 5 is mounted to the mounting plate 2 by a pin 8 and is a sliding fit on the pin by virtue of an elongate slot 9 in the wedge. This arrangement allows the passages 10 between the cam plates 3 and the wedge 5 to be narrowed or widened to accommodate different sized ropes.
  • the block 6 can be in the form of a semi-circular protrusion from the mounting plate (figures 1 and 2) or a pulley wheel (figure 3).
  • cam plates 3, wedge 5 and block 6 can be fluted (not shown) to provide a rope channel and chamfered corners as indicated to assist with the translation of a rope.
  • Figure 3 of the drawings illustrates the manner in which a rope generally indicated by arrow 11 can be engaged with the hitch 1. Free ends 12 and 13 of the rope 11 are secured to remote attachment points by making an appropriate ties. A portion 14 of the free end 12 of the rope 11 is placed in the passages 10 and a further portion 15 looped around a fixture such as a tie off rail of a vehicle and returned over the block 6 and then end 13 is secured to a further remote tie position of a vehicle.
  • a fixture such as a tie off rail of a vehicle and returned over the block 6 and then end 13 is secured to a further remote tie position of a vehicle.
  • the rope end 13 can be loosened and then tensioned.
  • the wedge 5 marginally rotates in a anti-clockwise direction and when the rope is tensioned after a partial clockwise rotation the apex end 16 of the wedge 5 engages and locks the rope.
  • Figure 4 of the drawings illustrates the use of hitches to secure a load on a box trailer 17.
  • the hitch positions indicated are the most convenient.
  • the encircled illustrations of the hitches 1 marked III show the rope path described in relation to figure 3 with the ends of the rope being secured to the trailer tie down bar at 18.
  • Figure 5 of the drawings illustrates how two hitches in series can be used in a vehicle recovery situation.
  • free end 13 of the rope is used for primary leverage and a recovery can be made with respect to a fixture such as tree 18, or another vehicle or fixture (not shown).
  • the present invention provides a rope hitch which because of its inherent mechanical advantages allows a rope to be tensioned or a load to be supported or moved with minimal effort and increased safety as tension in the rope is largely centered on the hitch and not tie down positions.
  • Figure 6 of the drawings in the embodiment of the invention illustrated two opposed sets of cam plates 20 and wedges 21.
  • the wedges 21 are mounted to a mounting plate 22 by a pin 23 which is a sliding fit in a slot 24 in the mounting plate.
  • a single set of cam plates 20 and a wedge 21 are mounted on a mounting plate 22 by a pin 23 slidable in slot 24.
  • An additional aperture 25 is provided in the body of the mounting plate 22.
  • the rope hitches can be used for securing the ends of two ropes or the like or a single rope end with the aperture 25 being used for connection to a hook, clip or the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)

Abstract

A rope hitch (1) comprising a body having opposed cam plates (3) mounted thereon with a wedge (5) or wedges fixed between the cam plates in an arrangement which allows a rope (11) to be secured between adjacent edges of the cam plates and the wedges and with respect to a remote tie-down point.

Description

ROPE HITCH
TECHNICAL FIELD The present invention relates to rope tensioners and hitches of the type which can be used to tie down, support or haul loads. BACKGROUND ART
There are many currently available rope tensioning devices and hitches for tensioning ropes, load support and for hauling a range from elaborate lever type devices to more simply constructed tensioners.
Such devices are commonly used in the transportation and yachting fields and the cost of these products varies.
Whilst most trade and transport industry workers are able to competently secure loads using devices and secure knotting techniques the general public's ability to tie an adequate knot for the purpose of securing and tensioning ropes and loads is often somewhat limited. This can lead to potentially dangerous on-road situations as in busy traffic if a load or part of a load is lost there is a high risk of an accident occurring.
It is an object of the present invention to provide a rope hitch which is simple to use, which can be used for tensioning a rope, supporting or hauling a load and which relieves the pressures on tie down points.
Further objects and advantages of the present invention will become apparent from the ensuing description which is given by way of example only.
DISCLOSURE OF INVENTION According to the present invention there is provided a rope hitch comprising a mounting plate, opposed cam plates mounted on a major surface of the mounting plate, and a wedge fixed between the cam plates, the arrangement being such that a rope can be secured in a passages created between adjacent edges of the wedge and the cam plates to secure same with respect to remote tie-down or fixture points. The cam plates and wedge can each have two principal edges meeting at an acute angle. The wedge can be mounted and slidable on a mounting pin extending from the major surface of the mounting plate.
Corners of the cam plates wedge and rope block can be chamfered. The wedge can be provided with a elongated pin slot which allows it to slide on the mounting pin to widen or narrow the passages between the cam plates and wedge to cater for different sizes of rope. The block may be in form of a rope pulley. The edges of the wedge, cam plates and the block can be fluted. A plurality of opposed sets of cam plates and wedges may be mounted on the mounting plate.
BRIEF DESCRIPTION OF THE DRAWINGS Aspects of the present invention will now be described with reference to the accompanying drawings in which,
Figures 1 and 2 are plan and perspective views of a hitch in accordance with one possible embodiment of the present invention, and
Figure 3 is a plan view of the hitch of figures 1 and 2 having a rope engaged therewith, and
Figure 4 is a side view of the hitches of the present invention in use for securing a load, and Figure 5 is a side view of the hitches of the present invention in use in a vehicle recovery situation, and
Figure 6 is a plan view of an alternative form of rope hitch in accordance with another aspect of the present invention, and
Figure 7 is a plan view of a further alternative form of rope hitch according to the present invention.
With respect to the drawings the present invention provides a rope hitch generally indicated by arrow 1 , the hitch comprising a mounting plate 2, opposed cam plates 3 mounted on one major surface 4 of the mounting plate 2, a wedge 5 fixed between the cam plates 3 and a rope block 6, mounted on the major surface 4 of the mounting plate 2 adjacent to the cam plates and wedge. The cam plates 3 and wedge are provided with two principle edges 7 meeting at an acute angle.
The wedge 5 is mounted to the mounting plate 2 by a pin 8 and is a sliding fit on the pin by virtue of an elongate slot 9 in the wedge. This arrangement allows the passages 10 between the cam plates 3 and the wedge 5 to be narrowed or widened to accommodate different sized ropes.
The block 6 can be in the form of a semi-circular protrusion from the mounting plate (figures 1 and 2) or a pulley wheel (figure 3).
The edges of the cam plates 3, wedge 5 and block 6 can be fluted (not shown) to provide a rope channel and chamfered corners as indicated to assist with the translation of a rope.
Figure 3 of the drawings illustrates the manner in which a rope generally indicated by arrow 11 can be engaged with the hitch 1. Free ends 12 and 13 of the rope 11 are secured to remote attachment points by making an appropriate ties. A portion 14 of the free end 12 of the rope 11 is placed in the passages 10 and a further portion 15 looped around a fixture such as a tie off rail of a vehicle and returned over the block 6 and then end 13 is secured to a further remote tie position of a vehicle.
To tension the rope end 13 can be loosened and then tensioned. When the rope is loosened the wedge 5 marginally rotates in a anti-clockwise direction and when the rope is tensioned after a partial clockwise rotation the apex end 16 of the wedge 5 engages and locks the rope.
Figure 4 of the drawings illustrates the use of hitches to secure a load on a box trailer 17. The hitch positions indicated are the most convenient. The encircled illustrations of the hitches 1 marked III show the rope path described in relation to figure 3 with the ends of the rope being secured to the trailer tie down bar at 18.
Figure 5 of the drawings illustrates how two hitches in series can be used in a vehicle recovery situation. In this case free end 13 of the rope is used for primary leverage and a recovery can be made with respect to a fixture such as tree 18, or another vehicle or fixture (not shown). The present invention provides a rope hitch which because of its inherent mechanical advantages allows a rope to be tensioned or a load to be supported or moved with minimal effort and increased safety as tension in the rope is largely centered on the hitch and not tie down positions. With respect to Figure 6 of the drawings in the embodiment of the invention illustrated two opposed sets of cam plates 20 and wedges 21.
As in the previous embodiment, the wedges 21 are mounted to a mounting plate 22 by a pin 23 which is a sliding fit in a slot 24 in the mounting plate. In Figure 7, a single set of cam plates 20 and a wedge 21 are mounted on a mounting plate 22 by a pin 23 slidable in slot 24. An additional aperture 25 is provided in the body of the mounting plate 22.
The broken lines of Figures 6 and 7 indicate the manner in which a wire, cable, rope can be engaged and locked between the cam plates 20 and wedges 21.
The rope hitches can be used for securing the ends of two ropes or the like or a single rope end with the aperture 25 being used for connection to a hook, clip or the like.
Aspects of the present invention have been described by way of example only and it will be appreciated that modifications and additions thereto may be made without departing from the scope thereof, as defined in the appended claims.

Claims

CLAIMS:
1. A rope hitch comprising a mounting plate, opposed cam plates mounted on a major surface of the mounting plate, and a wedge fixed between the cam plates, the arrangement being such that a rope can be secured in a passages created between adjacent edges of the wedge and the cam plates to secure same with respect to remote tie-down or fixture points.
2. A rope hitch as claimed in claim 1 wherein the cam plates and wedge can each have two principal edges meeting at an acute angle.
3. A rope hitch as claimed in claim 1 wherein the wedge is mounted and slidable on a mounting pin extending from the major surface of the mounting plate.
4. A rope hitch as claimed in claim 1 wherein corners of the cam plates and wedge.
5. A rope hitch as claimed in claim 1 wherein the wedge is provided with an elongated pin slot which allows it to slide on the mounting pin to widen or narrow the passages between the cam plates and wedge to cater for different sizes of rope.
6. A rope hitch as claimed in claim 1 wherein the mounting plate supports a rope pulley.
7. A rope hitch as claimed in claim 1 wherein the edges of the wedge, cam plates and the mounting block are fluted.
8. A rope hitch as claimed in claim 1 having a plurality of opposed sets of cam plates and wedges mounted on the mounting plate.
PCT/AU2002/000622 2002-05-20 2002-05-20 Rope hitch WO2003097440A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/AU2002/000622 WO2003097440A1 (en) 2002-05-20 2002-05-20 Rope hitch
AU2002308406A AU2002308406A1 (en) 2002-05-20 2002-05-20 Rope hitch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/AU2002/000622 WO2003097440A1 (en) 2002-05-20 2002-05-20 Rope hitch

Publications (1)

Publication Number Publication Date
WO2003097440A1 true WO2003097440A1 (en) 2003-11-27

Family

ID=29425366

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2002/000622 WO2003097440A1 (en) 2002-05-20 2002-05-20 Rope hitch

Country Status (2)

Country Link
AU (1) AU2002308406A1 (en)
WO (1) WO2003097440A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU709308B3 (en) * 1999-05-28 1999-08-26 Cunnington, Maria Elisabeth Rope hitch
CA2240367A1 (en) * 1998-06-11 1999-12-11 Llewellyn Bertram Parsons Rope clamp
AU728211B2 (en) * 1999-05-28 2001-01-04 Cunnington, Maria Elisabeth Rope hitch

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2240367A1 (en) * 1998-06-11 1999-12-11 Llewellyn Bertram Parsons Rope clamp
AU709308B3 (en) * 1999-05-28 1999-08-26 Cunnington, Maria Elisabeth Rope hitch
AU728211B2 (en) * 1999-05-28 2001-01-04 Cunnington, Maria Elisabeth Rope hitch

Also Published As

Publication number Publication date
AU2002308406A1 (en) 2003-12-02

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