Stone working – Sawing – Rotary
Patent
1983-10-26
1985-09-17
Whitehead, Harold D.
Stone working
Sawing
Rotary
83574, B28D 104
Patent
active
045414041
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
This invention relates to tile cutting apparatus and has been devised particularly though not solely for the cutting of wall and floor tiles.
In the past wall and floor tiles which have required to be cut for example for edge or corner applications have either been cut by hand using a hammer and chisel which is inaccurate and does not leave a neat edge or by using a power saw such as a cut-off saw provided with a suitable cutting blade which may for example be a diamond tipped blade. It is a disadvantage when using a power actuated cut-off saw that it is difficult to accurately hold the tile and guide the saw and although various attempts have been made to provide suitable saw guides they are generally cumbersome in nature and difficult to set up and use. It is a problem with the design of such saws that due to the cooling water which must constantly be supplied to the diamond cutting blade, the saw guide can quickly become clogged and rendered inoperative through the grit particles carried by the cooling water.
SUMMARY OF THE INVENTION
It is therefore an object of the present invention to provide tile cutting apparatus which will obviate or minimize the foregoing disadvantages in a simple yet effective manner or which will at least provide the public with a useful choice.
Accordingly the invention may broadly be said to consist in tile cutting apparatus comprising a work table adapted to support a tile to be cut, a guide and support track located beneath and/or to one side of the top of the work table and parallel to said one side thereof, a carriage guided and supported by the track, and a cut-off saw supported at a predetermined height above the table by a cantilevered arm extending from the carriage upwardly to said one side of the table and then transversely above the table to the cut-off saw.
Preferably said track is located beneath the top of the work table.
Preferably said track comprises two mutually opposed sideways facing grooves engageable with wheels on said carriage.
Preferably said carriage incorporates three wheels each running on a vertical axle and wherein two said wheels are spaced apart and engaged with a groove on one side of said track and the third said wheel is located between said first two wheels and engageable with the groove in the other side of said track.
Preferably said third wheel is mounted on an axle adjustable towards and away from the other two wheels to compensate for any wear in the track or wheels.
Preferably said cantilevered arm includes a vertical portion extending upwardly from the carriage, said vertical portion being adjustable for height so as to adjust the height of the cut-off saw above the table top.
Preferably said cantilevered arm includes a horizontal portion extending transversely above the table, said horizontal portion being pivotally mounted to said vertical portion so that the horizontal portion and hence the cut-off saw may be tilted upwardly away from the table top and then lowered downwardly in a similar fashion for pocket cutting into the surface of a tile.
Preferably said table top is provided in two portions there being a fixed level portion and a hinged portion fastened to the fixed portion by way of one or more hinged pins and tiltable downwardly at a predetermined angle so that a tile placed on and supported by the tilted portion may be cut by the blade of the cut-off saw at said predetermined angle.
Preferably said table top is provided with an upstanding fence edge for location of a tile to be cut and with an adjustable fence to enable a tile to be cut on a predetermined angle.
BRIEF DESCRIPTION OF THE DRAWINGS
Notwithstanding any other forms that may fall within its scope one preferred form of the invention will now be described by way of example only with reference to the accompanying drawings in which:
FIG. 1 is a plan view of tile cutting apparatus according to the invention;
FIG. 2 is a frontal view of the tile cutting apparatus shown in FIG. 1, and
FIG. 3 is an inverse plan view to an enlarged scale
REFERENCES:
patent: 1646589 (1927-10-01), Meek
patent: 2562578 (1951-07-01), Rickman
patent: 2812786 (1957-11-01), Hayes
patent: 3323507 (1967-06-01), Schuman
patent: 3815570 (1974-06-01), Story
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