Stone working – Sawing – Endless
Patent
1988-07-21
1990-01-16
Schmidt, Frederick R.
Stone working
Sawing
Endless
51135R, B28D 108
Patent
active
048936073
ABSTRACT:
A wire drive apparatus for the wire saw which is favorably used, particularly for cutting the structures of reinforced concrete with the wire saw and movable on the base surface such as the surface of the road or floor without using cranes is disclosed. This wire drive apparatus is characterized by that in addition to the wire drive apparatus for the wire saw which consists of a carriage, a wire drive pulley for endless circulation of the cutting wire and a pulley drive means for turning the wire drive pulley that are installed on the carriage, rails laid on the surface of the road or floor, front wheels and rear wheels that hold the carriage so as to allow it traveling on the rails and a wheel drive means for turning the front wheels and the rear wheels, it is constructed by providing supplementary front wheels and supplementary rear wheels that hold the carriage so as to be movable on the base surface and that they have the points of contact with the base surface at a lower level than those of the front wheels and the rear wheels, at least one pair of them are provided with a steering means and when the front wheels and the rear wheels are engaged with the rails, the supplementary front wheels and the supplementary rear wheels float above the base surface or when the supplementary front wheels and the supplementary rear wheels touch the base surface, the front wheels and the rear wheels are made to float above the base surface.
REFERENCES:
patent: 4633848 (1987-01-01), Bresciani
patent: 4708066 (1987-11-01), Heckman
Kabushiki Kaisha Dymosha
Rachuba M.
Schmidt Frederick R.
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