Stone working – Splitting – shearing – and punching
Patent
1996-01-31
1998-06-09
Eley, Timothy V.
Stone working
Splitting, shearing, and punching
125 3001, B28D 132
Patent
active
057620610
DESCRIPTION:
BRIEF SUMMARY
This invention relates to apparatus for splitting a building block, brick, paving stone, coping stone, pathway block or the like (hereinafter referred to simply as "blocks") into two or more pieces. More especially the invention is directed to apparatus for splitting a block to produce a smaller block of a required length.
When using such items as internal thermal blocks for building, for example, an internal wall of a house, it is more than likely that a significant number of blocks will need to be cut to length. Hitherto such blocks have conventionally been cut using either a saw or a bolster and hammer to create stress lines across the block width. Similar methods are presently employed to cut other types of bricks, stones and blocks as referred to above.
To use a saw to cut building blocks to length is both time consuming and unpleasant because of the high volume of dust created. With experience, blocks to an approximate size can be cut using a bolster and hammer. However the length of block produced is often imprecise and damage often occurs to the edges of the block. Without experience, attempts to split building blocks using a bolster and hammer are frequently unsuccessful.
A cutting machine is disclosed in FR-A-2559417 which comprises a frame including a base above which a cutting blade protrudes. A second blade is movable downwardly into contact with a brick or block supported on the frame base to cut the same.
The present invention sets out to provide splitting apparatus which enables blocks to be consistently and accurately cut to length.
According to the present invention in one aspect there is provided apparatus for splitting blocks, which comprises a base which supports a blade with its splitting edge above the surface of the base and a bladed member movable towards and away from the base to impact on a block supported thereby, the apparatus being characterized in that the blade protrudes a distance no greater than 5 mm above the base surface, and in that the bladed member is movable between and within guide ways positioned one to each side of the blade along a substantially vertical path which contains the respective edges of the blade and the bladed member.
The blade whose edge protrudes from the base of the apparatus is preferably a continuous blade which extends across at least the major part of the width of the base. The splitting edge of the blade is preferably tapered and the blade may be removable from the base.
The height of the cutting edge of the blade above the surface of the base may be of the order of between 2 mm and 4 mm; a typical height is 3 mm. The base may be generally horizontal and may be formed in a single piece. Alternatively, the base may be formed in two or more separate sections each of which may be inclined one with another. The surface of the base may be generally flat or may be formed with corrugations which extend in a direction generally normal to the splitting edge of the blade.
The base may include markings in the form of a rule to indicate the distance between a marked point or line and the protruding splitting edge of the blade. The surface of the base may include to one or each of its sides an upstanding member or wall whose end face lies to one side of the protruding splitting edge of the blade. This member or wall may include markings in the form of a rule.
The invention will now be described by way of example only with reference to the accompanying diagrammatic drawings in which:
FIG. 1 is a side view of apparatus in accordance with the invention with a block to be split supported thereby; and
FIG. 2 is a plan view from above of the apparatus and block illustrated in FIG. 1.
The apparatus illustrated in FIGS. 1 and 2 includes a base 1 produced from wood, metal or other suitable material. A blade 2 is supported by the base and is formed with a splitting edge which protrudes a small distance above the base surface and which extends across the entire width of the base surface. The base 1 is formed with a plurality of corrugations 3 which extend in a direct
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Banks Derris H.
Eley Timothy V.
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