Turning – Severing or cut-off – Infeed means
Patent
1977-12-01
1979-02-13
Hinson, Harrison L.
Turning
Severing or cut-off
Infeed means
82 59, 82 84, 82101, B23B 304, B23B 514
Patent
active
041389115
ABSTRACT:
A tool for cutting tubular or solid cylindrical workpieces such as rigid polyvinyl chloride or like rigid resin pipes, soft metal pipes, etc. transversely thereof comprises a main body having a bearing portion including a pair of freely rotatable members, a vertically movable cutter arm pivoted to the main body and provided with a pair of rotary cutters opposed to the rotatable members in corresponding relation thereto, a cutter arm lifting assembly for moving the rotary cutters toward or away from the rotatable members, and an intermittent feeder mounted on the cutter arm for rotating the rotary cutters in the same direction. The workpiece is placed on the bearing portion of the main body and set in position substantially at right angles to the rotary cutters. After the edge of one of the rotary cutters has been brought into contact with the workpiece, the cutter arm lifting assembly is operated to hold the workpiece between the bearing portion and the rotary cutter. A handle, when operated, delivers torque to the pair of rotary cutters through the intermittent feeder, rotating the workpiece more than one turn about its own axis, whereby an incision is pre-formed in the workpiece by one of the cutters. The arm lifting assembly and the handle are thereafter repeatedly operated, causing the rotary cutters to cut the workpiece transversely thereof while rotating the workpiece about its axis.
REFERENCES:
patent: 826434 (1906-07-01), Lally
patent: 1001126 (1911-08-01), Dawson
patent: 1468935 (1923-09-01), Vasper
patent: 3807047 (1974-04-01), Sherer et al.
patent: 4072073 (1978-02-01), Birkestrand
Hinson Harrison L.
Toho Koki Kabushiki Kaisha
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