GB2104362A

GB2104362A - Soil working tine

Info

Publication number: GB2104362A
Application number: GB08224538A
Authority: GB
Inventors: A H Trafford; Willis Neil Chapman
Original assignee: SPALDING AND SON Ltd A
Current assignee: SPALDING AND SON Ltd A
Priority date: 1981-08-27
Filing date: 1982-08-26
Publication date: 1983-03-09
Also published as: GB2104362B

Abstract

A known tine TN (shown unworn) is repaired when worn by a tip 1 having a tongue portion 3 with an arcuate inner surface which receives the worn end of the tine TW. The tongue is welded at W to the tine end TW. The tongue is integral with a tip end 1 and provides accurate registration and sufficient strength at the weld zone. <IMAGE>

Description

SPECIFICATION Tines for cultivating implements This invention relates to tines for cultivating implements and more especially to the restoring or repair of worn tines.

Tines for cultivating implements such as harrows comprise two portions one being a fastening portion, for example screw-threaded, for securing to the soil working machine and the other being straight, forming a soil working portion, and tapering towards its end. The two portions may be mutually inclined with the fastening portion having a shape so as to fit the soil working machine in one position only. Such a tine wears in a fairly consistent manner through its fixed positioning. Replacement of the tine is required after unacceptable wear and this requires a new tine including the fastening portion which is otherwise unworn. The replacement is expensive.

This invention seeks to provide a replacement soil working portion for a tine and a method of restoring a tine using such a replacement portion.

According to this invention there is provided a soil working portion for a tine comprising an elongate tip which tapers towards its one end and carrying an integral tongue at its other end, the outside surface of the tongue being formed as a continuous extension of the tip, the inside surface of the tongue having a longitudinally extending concavely curved channel to receive a worn soil working portion of a tine which is welded to the tongue.

Preferably the channel of the tongue merges, in a transition zone, with the tip.

The invention provides also a method of repairing a worn tine using the aforesaid tip which method comprises the steps of: (a) cleaning and, optionally, shaping the worn tine soil working portion, (b) positioning said worn portion to lie within the channel of the tip with an end in abutment with the transition zone, (c) welding the tip to the tine along the boundaries of and within the channel.

This arrangement offers good support along the weld to provide strength and location and positioning is made simple prior to welding.

An embodiment according to the invention is shown by way of example in the accompanying drawings, wherein: Figure 1 is a top plan view, Figure 2 is a section on X-X of Fig. 1, Figure 3 is an underneath view, Figure 4 is a section on Y-Y of Fig. 1, Figure 5 shows a known tine and a repaired worn known tine, and Figure 6 shows the tines of Fig. 5 but installed on a harrow machine.

Referring to Figs. 1 to 4 the tine tip 1 is of hexagonal cross-section and tapers towards one end 2. The tip has at the other end an internal tongue portion 3 of which the outside surface 4 is a continuous extension of the outside surface 5 of the tip. The juncture 6 between the tongue and tip contains the maximum cross-sectional dimension.

The tongue on the inside is formed with a longitudinal concave channel 7 having side walls 8 which merge smoothly by webs 9 into the tip portion 1.

The worn tine seats within the channel 7 and is welded thereto to form the repair. This is illustrated in Figs. 5 and 6 wherein TN is the existing unworn known tine and TW is the worn portion of the tine having a tip according to the invention welded thereto at W.

1. A said working portion for a tine comprising an elongate tip which tapers towards its one end and carrying an integral tongue at its other end, the outside surface of the tongue being formed as a continuous extension of the tip, the inside surface of the tongue having a longitudinally extending concavely curved channel to receive a worn soil working portion of a tine which is welded to the tongue.

2. A soil working portion for a tine according to Claim 1, wherein the channel of the tongue merges, in a transition zone, with the tip.

3. A soil working portion according to Claim 1 or 2, wherein the juncture between the tip and tongue contains the maximum cross-sectional area.

4. A method of repairing a worn tine using a soil working portion as claimed in any preceding claim, which method comprises the steps of: (a) cleaning and, optionaily, shaping the worn tine soil working portion, (b) positioning said worn portion to lie within the channel of the tip with an end in abutment with the transition zone, (c) welding the tip to the tine along the boundaries of and within the channel.

5. A soil working portion for a tine as herein described and exemplified with reference to the drawings.

6. A method of repairing a worn tine as herein described and exemplified.

7. A soil working tine when repaired by the method or using a soil working portion of any preceding claim.

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

Claims

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Tines for cultivating implements This invention relates to tines for cultivating implements and more especially to the restoring or repair of worn tines. Tines for cultivating implements such as harrows comprise two portions one being a fastening portion, for example screw-threaded, for securing to the soil working machine and the other being straight, forming a soil working portion, and tapering towards its end. The two portions may be mutually inclined with the fastening portion having a shape so as to fit the soil working machine in one position only. Such a tine wears in a fairly consistent manner through its fixed positioning. Replacement of the tine is required after unacceptable wear and this requires a new tine including the fastening portion which is otherwise unworn. The replacement is expensive. This invention seeks to provide a replacement soil working portion for a tine and a method of restoring a tine using such a replacement portion. According to this invention there is provided a soil working portion for a tine comprising an elongate tip which tapers towards its one end and carrying an integral tongue at its other end, the outside surface of the tongue being formed as a continuous extension of the tip, the inside surface of the tongue having a longitudinally extending concavely curved channel to receive a worn soil working portion of a tine which is welded to the tongue. Preferably the channel of the tongue merges, in a transition zone, with the tip. The invention provides also a method of repairing a worn tine using the aforesaid tip which method comprises the steps of: (a) cleaning and, optionally, shaping the worn tine soil working portion, (b) positioning said worn portion to lie within the channel of the tip with an end in abutment with the transition zone, (c) welding the tip to the tine along the boundaries of and within the channel. This arrangement offers good support along the weld to provide strength and location and positioning is made simple prior to welding. An embodiment according to the invention is shown by way of example in the accompanying drawings, wherein: Figure 1 is a top plan view, Figure 2 is a section on X-X of Fig. 1, Figure 3 is an underneath view, Figure 4 is a section on Y-Y of Fig. 1, Figure 5 shows a known tine and a repaired worn known tine, and Figure 6 shows the tines of Fig. 5 but installed on a harrow machine. Referring to Figs. 1 to 4 the tine tip 1 is of hexagonal cross-section and tapers towards one end 2. The tip has at the other end an internal tongue portion 3 of which the outside surface 4 is a continuous extension of the outside surface 5 of the tip. The juncture 6 between the tongue and tip contains the maximum cross-sectional dimension. The tongue on the inside is formed with a longitudinal concave channel 7 having side walls 8 which merge smoothly by webs 9 into the tip portion 1. The worn tine seats within the channel 7 and is welded thereto to form the repair. This is illustrated in Figs. 5 and 6 wherein TN is the existing unworn known tine and TW is the worn portion of the tine having a tip according to the invention welded thereto at W. CLAIMS

6. A method of repairing a worn tine as herein described and exemplified.