Cutting by use of rotating axially moving tool – Machine frame – With counterweight mechanism
Patent
1974-08-26
1976-03-30
McGehee, Travis S.
Cutting by use of rotating axially moving tool
Machine frame
With counterweight mechanism
90 205, 212 49, 248123, 248178, B23B 4700, B23C 900, B66C 2372, F16M 1104
Patent
active
039471446
ABSTRACT:
An articulated swivelling boom combination adapted to carry on one of its extremities a device, such as a camera, which it is desired to be able to move about smoothly in any direction of 360.degree. in a given plane within a predetermined area. The combination comprises an elongated rigid member mounted intermediate its ends for swivelling about a vertical axis in a predetermined arc of rotation with a secondary rigid element similarly swivellingly mounted in the vicinity of each of the ends of the rigid member. The device is mounted on the free end of one of the secondary rigid elements and counterweighting is provided on the free end of the other of the two secondary rigid elements. The two secondary rigid elements may be oppositely directed and their swivelling mounts interlocked by a gear and belt arrangement. Thereby, any movement of the device on the free end of its secondary rigid element produces a compensating counterweighted movement of the other element. Motorized movement control may be provided and control may be by a computer, particularly, for example where device is a machine tool, such as a cutter.
REFERENCES:
patent: 2469844 (1949-05-01), Porter et al.
patent: 2631375 (1953-03-01), Gleason
patent: 2929288 (1960-03-01), Harvey et al.
patent: 3434497 (1969-03-01), Bily
patent: 3743049 (1973-07-01), Levrini
patent: 3750895 (1973-08-01), Durand
patent: 3788585 (1974-01-01), Masseron
Briggs W. R.
McGehee Travis S.
Pavitt, Jr. William H.
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