GB2289834A - Tractor hitch - Google Patents

Tractor hitch Download PDF

Info

Publication number
GB2289834A
GB2289834A GB9409675A GB9409675A GB2289834A GB 2289834 A GB2289834 A GB 2289834A GB 9409675 A GB9409675 A GB 9409675A GB 9409675 A GB9409675 A GB 9409675A GB 2289834 A GB2289834 A GB 2289834A
Authority
GB
United Kingdom
Prior art keywords
hitch
lift
retract
links
tractor
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
GB9409675A
Other versions
GB9409675D0 (en
Inventor
Richard George Crossman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CANNINGTON COLLEGE
Original Assignee
CANNINGTON COLLEGE
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 CANNINGTON COLLEGE filed Critical CANNINGTON COLLEGE
Priority to GB9409675A priority Critical patent/GB2289834A/en
Publication of GB9409675D0 publication Critical patent/GB9409675D0/en
Publication of GB2289834A publication Critical patent/GB2289834A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60D—VEHICLE CONNECTIONS
    • B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
    • B60D1/24—Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions
    • B60D1/42—Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions for being adjustable
    • B60D1/46—Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions for being adjustable vertically
    • B60D1/465—Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions for being adjustable vertically comprising a lifting mechanism, e.g. for coupling while lifting
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B59/00—Devices specially adapted for connection between animals or tractors and agricultural machines or implements
    • A01B59/04—Devices specially adapted for connection between animals or tractors and agricultural machines or implements for machines pulled or pushed by a tractor
    • A01B59/042—Devices specially adapted for connection between animals or tractors and agricultural machines or implements for machines pulled or pushed by a tractor having pulling means arranged on the rear part of the tractor

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Zoology (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Agricultural Machines (AREA)

Abstract

The pick up hitch 13, is secured to the tractor frame 10, by two links of unequal lengths 11, 12 in such a way that as the hitch is disengaged from the transport position it firstly extends to enable the operation to see the crook 14 and then lowers to the ground to enable the trailer ring hitch to be engaged, the action of lifting is the reverse procedure in that the crook lifts almost vertically to engage the ring hitch and then retracts and latches in the transport position. <IMAGE>

Description

The Lift and Retract Hitch Existing conventional automatic pick up hitches on tractors suffer from the following limitations; 1. Visibility is restricted when the hitch is lowered to engage in the ring hitch of the trailer.
2. The action of raising the crook to the ring hitch of the trailer causes rearward movement which requires the operator to estimate the correct position of the crook.
The Lift and Retract pick-up hitch achieves a unique action of extending, lifting and retraction by using a mechanical system of two radius links, each anchored at one end of the frame attached to the tractor. The locus of the path of the pick up hook used to engage the ring hitch on the trailer, is determined by varying the respective lengths and pivot points of these two links in order to suit the particular tractor, to which it is fitted.
Figure 1 shows a side elevation of the hitch in its raised and lowered positions with the loci generated by the tip of the hook while moving from its lowered to raised position.
Figure 2. Main components of the hitch Referring to the drawing, the hitch comprises of a main frame 10 attached to the tractor a front link or pair of links 11, a rear link or pair of links 12 and a lower frame 13 and hook 14.
The lower frame is attached to the main frame by means of the front and rear links. The lower frame is raised and lowered by means of the tractor lift arms and locked in the transport position by means of a latch.

Claims (6)

Claims
1. A tractor mounted pick up hitch comprising of a lower frame and hook assembly attached to the tractor by front and rear links.
As the hitch is lowered by means of the tractor hydraulics the hook extends rearwards so allowing greater visibility to the operator. On lifting the hitch it initially moves in a mainly vertical direction so allowing for accurate location with the trailer ring hitch.
2. The Lift and Retract hitch as claimed in claim 1 wherein the pick up hitch operation is carried out by mechanical linkage.
3. The Lift and Retract hitch as claimed in claim 1 or claim 2 wherein produces a loci pattern of vertical Lift and Retraction.
4. The Lift and Retract hitch as claimed in claim 1 wherein the front link 11 could consist of 1 or 2 links.
5. The Lift and Retract hitch as claimed in claim 1 or claim 4 wherein the rear link 12 could consist of 1 or 2 links.
6. The Lift and Retract hitch substantially as described herein with reference to figure of the accompanying drawings.
GB9409675A 1994-05-14 1994-05-14 Tractor hitch Withdrawn GB2289834A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9409675A GB2289834A (en) 1994-05-14 1994-05-14 Tractor hitch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9409675A GB2289834A (en) 1994-05-14 1994-05-14 Tractor hitch

Publications (2)

Publication Number Publication Date
GB9409675D0 GB9409675D0 (en) 1994-07-06
GB2289834A true GB2289834A (en) 1995-12-06

Family

ID=10755130

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9409675A Withdrawn GB2289834A (en) 1994-05-14 1994-05-14 Tractor hitch

Country Status (1)

Country Link
GB (1) GB2289834A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2330514A (en) * 1997-10-22 1999-04-28 Hubert Defrancq Front lifting device for an agricultural tractor
GB2380720A (en) * 2001-10-08 2003-04-16 Bill Bennett Engineering Ltd Vehicle hitch
EP1810561A1 (en) * 2006-01-18 2007-07-25 Josef Scharmüller Towing device
EP1876040A1 (en) * 2006-07-04 2008-01-09 CBM S.p.A. Tractor hitch for trailer

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1014954A (en) * 1963-05-23 1965-12-31 Inst Landmasch & Traktorenbau Improvements in or relating to traction arrangements on traction vehicles
US4715770A (en) * 1984-10-25 1987-12-29 Deere & Company Power lift for a lifting device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1014954A (en) * 1963-05-23 1965-12-31 Inst Landmasch & Traktorenbau Improvements in or relating to traction arrangements on traction vehicles
US4715770A (en) * 1984-10-25 1987-12-29 Deere & Company Power lift for a lifting device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2330514A (en) * 1997-10-22 1999-04-28 Hubert Defrancq Front lifting device for an agricultural tractor
US6062321A (en) * 1997-10-22 2000-05-16 Defrancq; Hubert Lifting device, particularly a front lift for an agricultural tractor or the like
GB2330514B (en) * 1997-10-22 2002-02-27 Hubert Defrancq Front lifting device for an agricultural tractor or the like
GB2380720A (en) * 2001-10-08 2003-04-16 Bill Bennett Engineering Ltd Vehicle hitch
GB2380720B (en) * 2001-10-08 2004-10-27 Bill Bennett Engineering Ltd Vehicle hitch
EP1810561A1 (en) * 2006-01-18 2007-07-25 Josef Scharmüller Towing device
EP1876040A1 (en) * 2006-07-04 2008-01-09 CBM S.p.A. Tractor hitch for trailer

Also Published As

Publication number Publication date
GB9409675D0 (en) 1994-07-06

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)