Spaced-rotor ride-type surface working machine with...

Details Spaced-rotor ride-type surface working machine with... Spaced-rotor ride-type surface working machine with...

E - Fixed Constructions

04

F

72/148

E04F 21/16 (2006.01) E04F 21/24 (2006.01)

Patent

CA 1086979

ABSTRACT In a surface-working machine, as for troweling fresh concrete, the operator rides on a frame which is carried by surface-working rotors, each having evenly spaced tools or trowels. The application of tilting forces to the working rotors to cause movement of the total machine forwardly or rearwardly or to either side, or turning, or any combination thereof, is controlled by the operator through a single control stick, with all movements of the control stick corresponding to the machine movement desired. If, in a troweling machine, there are only two rotors, their trowels intermesh to work overlapping circles, and no gap is left between the working circles when movement is perpendicular to a "biaxial" plane (common to both rotational axes). This gives maximum width of coverage, and the operator's seat faces in that direction of movement. Applicator of the required tilting forces to both rotors is achieved while nevertheless providing frame stability by providing for one rotor assembly, only a single pivot disposed to make that assem- bly rigid with the frame except as to tilting the rotor axis in the biaxial plane. The operator's seat and engine are both ap- proximately centered in the biaxial plane so that no unbalanced forces result from different weights of operators. The main frame serves to shield the rotors.

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