Automatically repositionable rotary platform, and method

Details Automatically repositionable rotary platform, and method Automatically repositionable rotary platform, and method

1975-03-19

1976-10-05

Purser, Ernest R.

Tool driving or impacting

Processes

175 57, 175161, 212 39R, 212 67, B66C 1348

Patent

active

039839460

ABSTRACT:
A derrick-type augur drill machine mounted on a carrier, including a rotary platform having both a memory device and an automatic latching means associated with the memory device, the memory means being operable for storing information indicating a selected rotary position of the platform and the latching means being responsive to the stored information when the selected platform position is regained for locking the platform in place. An apparatus and method for automatically repositioning a rotary platform are also disclosed in detail.

REFERENCES:
patent: 3445014 (1969-05-01), Kullerback
patent: 3447692 (1969-06-01), Thomas
patent: 3664515 (1972-05-01), Ovendorff et al.
patent: 3696625 (1972-10-01), Alexander

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