B - Operations – Transporting – 26 – F
Patent
B - Operations, Transporting
26
F
164/100, 164/136
B26F 1/10 (2006.01) B21D 28/36 (2006.01) B26D 7/26 (2006.01) B26F 1/14 (2006.01)
Patent
CA 1326204
QUICK RELEASE ROTARY PUNCH Abstract of the Disclosure A rotary punch including a punch wheel rotatable on a central axis, the wheel having an end face lying in a radial plane of the wheel and an outer generally cylindric rim surface extending generally axially of the wheel. A plurality of radial bores in the wheel extend generally radially inwardly from the rim surface at intervals spaced circumferentially of the wheel, and a corresponding plurality of axial bores in the wheel extend generally axially inwardly from said end face of the wheel intersecting the radial bores generally at right angles. A plurality of generally cylindric punch elements are inserted in the radial bores, each punch element having a circumferential groove. A plurality of retainer pins in the axial bores may be moved axially between an extended position in which each retainer pin extends into a corresponding radial bore and is received in the circumferential groove in a respective punch element for holding the punch element in fixed radial position in its radial bore, and a retracted position in which the retainer pin is clear of the groove for enabling removal of the punch element from the radial bore. A coil spring biases each retainer pin toward its extended position. A tool is provided to pry any one of the retainer pins for moving it against the bias of the spring from its extended position to its retracted position to permit removal of a respective punch element from the wheel.
609147
Smart & Biggar
Wilson Manufacturing Company
LandOfFree
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