Lead angle controlling mechanism

Details Lead angle controlling mechanism Lead angle controlling mechanism

1976-06-23

1977-08-16

Custer, Jr., Granville Y.

Solid material comminution or disintegration

Apparatus

Loose grinding body comminutor

511631, B02C 1708

Patent

active

040421813

ABSTRACT:
A device employed with a vibratory apparatus such as a mill or the like which is used to change the lead angle between rotating eccentric weights. Eccentric weights are mounted at either end of a drive motor and caused to rotate with the motor shaft at specific angles with respect to one another to develop a specific vibratory action. At one end, the eccentric weight is fixedly mounted on the shaft. At the other end, the weight is rotatably mounted on the shaft. A stop mechanism is associated with the shaft adjacent the rotatably mounted weight to prevent the weight from pivoting through more than a predetermined angle. By rotating the motor and shaft in a first direction, the rotatably mounted weight assumes a position on the shaft at a first stop. When the motor is reversed, the rotatably mounted weight swings to a position at a second stop. A spring is employed to bias the rotatably mounted weight against the first stop and acts to prevent damaging impact of the weight against the second stop when the motor is reversed. Provision is made for facilely varying the bias load of the spring and for quickly changing the location of the stops such that a wide variety of loads and operating conditions can be created and accomodated.

REFERENCES:
patent: 2852946 (1958-09-01), Petrin
patent: 3091712 (1963-05-01), Galbraith
patent: 3919575 (1975-11-01), Weber et al.

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