Tapper incorporating reverse rotation mechanism

Details Tapper incorporating reverse rotation mechanism Tapper incorporating reverse rotation mechanism

1974-10-25

1976-12-21

Simpson, Othell M.

Cutting by use of rotating axially moving tool

Means to drive tool

Including means to move tool along tool-axis

10 89F, 74376, 408124, 408140, B23B 4714, B23G 300

Patent

active

039985652

ABSTRACT:
Tapper comprising a rotatable tapper main body, a positive rotation transmitting element and a reverse rotation transmitting element disposed in the main body, a holder member disposed in a lower portion of the main body, a driven shaft for holding a tap supported by the holder member and rotatable in positive and reverse directions, and a clutch ring for switching the direction of rotation mounted on the driven shaft. The axial displacement of the driven shaft brings the clutch ring into engagement with the positive rotation transmitting element or the reverse rotation transmitting element selectively to rotate the driven shaft in positive or reverse direction. Each of the clutch and the reverse rotation transmitting element is axially movably supported by a spring for absorbing an axial impact load to be exerted on the driven shaft when the direction of rotation is switched.

REFERENCES:
patent: 3037393 (1962-06-01), Bernhard
patent: 3144783 (1964-08-01), Dubendorfer
patent: 3226993 (1966-01-01), Varback
patent: 3397588 (1968-08-01), Johnson
patent: 3717892 (1973-02-01), Johnson

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