Dispensing – With casing or support – Ambulant
Patent
1998-06-10
2000-04-25
Shaver, Kevin
Dispensing
With casing or support
Ambulant
239150, A01C 3500
Patent
active
060533765
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to line marking shoes which are advanced relative to a ground surface in a line marking direction to mark lines onto the ground surface in the line marking direction. Such shoes are principally, but not exclusively, advanced over the ground surface in the line marking direction by line marking apparatus and comprise a sole part having a discharge opening region formed therein for discharge of line marking material therethrough onto the ground surface and connector means for connecting line marking material supply means to the line marking shoe for supply of line marking material to the discharge opening region for discharge onto the ground surface.
There is at times a need for lines of different widths to be marked onto a ground surface. To achieve this end, it has hitherto been proposed to use a set of line marking shoes with each line marking shoe of the set having a discharge opening region adapted to mark a line of different width than that marked by the discharge opening regions of the other shoes of the set.
The disadvantage of this prior proposal is that it requires the laborious task of interchanging one line marking shoe of the set for another when lines of different widths are required to be marked onto the ground surface. This typically involves releasing the line marking material supply line from the line marking shoe being used in the line marking apparatus, releasing the line marking shoe from the line marking apparatus, connecting another line marking shoe to the line marking apparatus and connecting the line marking material supply line to the `new` line marking shoe.
There has also hitherto been proposed a line marking shoe in which the dimension of the discharge opening region transverse to the line marking direction is adjustable to adjust the corresponding dimension of the line marking material deposited onto the ground surface and hence the width of the line marked. In this prior line marking shoe proposal the discharge opening region comprises an opening in the sole part through which line marking material is deposited onto the ground surface. The sole part further supports an upper part comprising a pair of spaced apart side walls which extend in a direction parallel or substantially parallel to the line marking direction to define a guide channel therebetween. The guide channel communicates at its lower end with the opening in the sole part and the connector means connects the line marking material supply line to the line marking shoe such that the line marking material is supplied through the guide channel to the opening in the sole part.
The side walls of the upper part in the prior line marking proposal are displaceable towards or away from one another. The dimension transverse to the line marking direction of the line marking material discharged onto the ground surface through the opening is therefore adjustable by adjusting the spacing between the side walls. The width of the line marked onto the ground surface is thus determined by the relative spacing between the side walls of the upper part.
The disadvantage of this prior line marking shoe proposal is that the need for displaceable side walls makes manufacture more involved and accordingly more expensive. Furthermore, control of the width of the line marked onto the ground surface is not as accurate as it could be. Moreover, a higher degree of maintenance than desired is required because the line marking material clogs up the means by which the side walls are displaceable towards or away from one another.
It is therefore an aim of the present invention to provide means for marking lines of different widths onto a ground surface which is simpler than the prior proposals.
According to the present invention there is provided a line marking shoe adapted in use to be advanced relative to a ground surface in a line marking direction to mark a line onto the ground surface in the line marking direction comprising a sole part having a discharge opening region formed therein for discharge of line marking
REFERENCES:
patent: 1814488 (1931-07-01), Murnahan
patent: 1956602 (1934-05-01), Went et al.
patent: 2127852 (1938-08-01), Adamson
patent: 2317288 (1943-04-01), McCubbin
patent: 3891128 (1975-06-01), Thomas
patent: 4269328 (1981-05-01), Franklyn
patent: 4545531 (1985-10-01), Williams
Bui Thach
Dorman Ira S.
Shaver Kevin
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