Machine element or mechanism – Mechanical movements – Rotary to gyratory
Patent
1991-11-12
1993-06-22
Herrmann, Allan D.
Machine element or mechanism
Mechanical movements
Rotary to gyratory
74 61, 2093665, 366128, B06B 116, B07B 142
Patent
active
052208460
ABSTRACT:
An asymmetric mechanical vibrator with external adjustment for vibrating screens and other equipments having a bearing housing fixable to a sidewall P of the equipment and supporting through bearings a central portion of a shaft, which has an end portion, inside the equipment, carrying a balance eccentric counterweight with fixed axial positioning and predetermined axial extension and mass, the shaft having an end portion outside the equipment and carrying a main eccentric counterweight placed nearer the bearing housing than the balance counterweight and having axial dimension and mass greater than those of the balance counterweight, the axial positioning, axial dimension and mass of the main counterweight being selectively variable to generate determined eccentric forces on the vibrator and the same bending moment equal to that produced by the balance counterweight.
REFERENCES:
patent: 756950 (1904-04-01), Fraser et al.
patent: 952565 (1910-03-01), Fraser
patent: 1083652 (1914-01-01), Barrett
patent: 1388097 (1921-08-01), Capsoni
patent: 3478406 (1969-11-01), Auckland
Fabrica de Aco Paulista LTDA
Herrmann Allan D.
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