GB2399562A

GB2399562A - Excavator bucket

Info

Publication number: GB2399562A
Application number: GB0305958A
Authority: GB
Inventors: John Kenneth Hawker; Samuel Dantzie
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-03-15
Filing date: 2003-03-15
Publication date: 2004-09-22
Also published as: GB0305958D0; GB0321290D0

Abstract

A sideless excavator bucket 1 is provided which does not compress moist materials or clay and comprises a blade 2, reinforcing ribs 4, 5 and is of C or L shape. In order to trap excavated materials, a pinch plate 6 is provided on the excavator arm 11. The bucket acts as a curved spade during excavation.

Description

EXCAVATOR trench and foundation CLAY SPADE

Background

This invention relates to an excavator bucket, more particularly to a spade, which is engaged with the removal of moist, sticky or adhesive clay like material, which can be used on any appropriate bucket- excavating machine. It enables the continuous removal and depositing of said materials.

The Problem to be solved When digging foundations or footings and trenches, because of the relatively narrow widths involved it is not possible to dig in moist, sticky, clay type soil, because the material tends to cling to the bucket sidewalls by its adhesive friction. Due to this adhesive friction, gravity is inadequate to dump the material from the bucket because of the overall contact area and the compression of the material in the bucket.

In all instances, using currently available Buckets to facilitate the removal of moist clay like or adhesive materials results in clogging of materials in bucket; thus reducing time by the operator or the necessity for a second party having to clear the material from the implement manually, usually with a hand spade or pick. The implement is thee' wetted'with liquid to produce a 'frictionless ' surface between the implement and the material thus not allowing the material to adhere to the surface. This problem rapidly repeats itself during the removal of materials thus wasting valuable operator/contractor time.

What it does The invention addresses the issue of excavating and releasing sticky or adhesive clay like materials, thus eliminating the need for De-clogging' or cleaning of implement during operation and therefore at regular or irregular intervals depending on the particular nature of the sticky or adhesive clay like material.

The Excavator clay spade extracts clay like material typically into a roll, which is then pressed against the pinch plate for stability before emptying the said material in a working environment. The invention of this Excavator clay spade does not allow clogging or adhering of materials to tool. It is reliant only on gravity for it's emptying.

Claims

What We CLAIM is: 1. An excavator trench and foundation clay spade can be

used as an excavator tool on an appropriate bucket excavator unit; said trench and foundation clay spade having no sides, the tip, being protected by a cutting edge, extends flattish being the leading or front edge of the trench and foundation clay spade, continues back, beginning to curve upwards as it recedes, resulting in a shape typically L to C-shaped; the width of which is variable; to which is attached two or more ribs which follow the resultant profile of the trench and foundation clay spade, allowing at the opposite end to the tip, a profile which includes location holes or lugs for attachment to an appropriate bucket excavator unit; located along the bucket excavator dipper arm is a pinch plate to facilitate desired material removal.
2. The structure of claim1, in which said tip being the leading edge, is protected by a cutting edge, which is bolted to the tip: the cutting edge usually will be made of a more abrasive resistant material than that of the trench and foundation clay spade, and runs the full width of the L to C- shape.
3. The structure of claim1, in which said ribs being strengthening members running the length of the profile of the trench and foundation clay spade; two of which include holes or lugs for attachment to excavator dipper arm and excavator bucket linkage, whilst any other number of ribs being optional strengthening members dependent on the width of the L to Cshape.
4. The pinch plate is to 'pinch or trap' the material between the trench and foundation clay spade and the excavator dipper arm.
5. A trench and foundation clay spade of the kind referred to substantially as herein described with reference to above claims, and as shown in the accompanying drawings.

FIGURE 1 Is an isometric view of the invention represented by the unshaded area, which is attached to a typical dipper arm assembly bucket excavator unit represented by shaded area; shown here in its loaded position prior to depositing of materials.

FIGURE 2 Is a side elevation of figure 1.

FIGURE 3 and FIGURE 4 Are corresponding views of figure 1 and Figure 2 respectively in the excavating or trenching position prior to removal of materials.

Description of drawings

It must be noted in figures 1-4 that the complete dipper arm designated by the shaded area in figures 1 and 2 and by the numeral 11 (partial dipper arm) in figures 3 and 4 is of an appropriate size and is attached to an appropriate excavating unit.

Referring to figures 1 and 2 describes the invention in its loaded or closed position. Materials 15 is kept stable in this position by being pushed against pinch plate 6 which is attached to dipper arm assembly.

Referring to figure 3 and (figures 1 and 2.) The cutting blade 2, is attached to the tip 3 of the spade 1, which is the leading edge. Attached to the spade is the ribs 4, containing pin hole brace 7 and pin hole brace fixed pivot 8. Pin hole brace fixed pivot 8 allows attachment of invention to dipper arm11, a further attachment on pinhole brace 7 attaches to pushrod 12, which is in turn attached using link pivot 9 to bucket linkage 13, which is attached to dipper arm 11, by fixed bucket link pivot 10. (This also completes the attachment of the invention to the dipper arm in Figures 1 and 2).

Referring to figures 3 and 4. The dipper arm 11 and pushrod 12, is connected to ribs 4 by pins located in pin hole brace 7 and pin hole brace pivot 8. Pin hole brace7 allows for pivotal action from link pivot 9, pivoting around fixed bucket pivot 10 and in push rod 12, and bucket linkage 13, pivoted around fixed bucket link 10, actuated by movement in bucket ram 14 which is a double acting hydraulic cylinder. This enables movement of invention to desired positions during operating; typically from positions shown in figures 1 and 2 to positions far beyond those shown in figures 3 and 4 Attached to spade1 is rib strengthening members 5 these are optionally attached dependent on the width 'X' of spade1 and corresponding width of cutting edge 2.