1
Mitchell James Laverne: Method and means of continuously punching, shearing, and forming sheet material.. Mitchell James L, November 28, 1984: EP0126142-A1 (36 worldwide citation)

Apparatus for continuously punching, shearing and forming sheet metal (10) comprising a frame, and punching (16), shearing (18) and forming (20) stations thereon. Rollers (38, 52-61) are provided for continuously feeding sheet metal through said stations. The forming station (20) comprises adjustabl ...


2
James L Mitchell: Method and means of continuously punching, shearing and forming sheet material. Zarley McKee Thomte Voorhees & Sease, September 18, 1984: US04471641 (22 worldwide citation)

A machine for continuously punching, shearing and forming sheet material comprises a frame and punching, shearing, and forming stations. Rollers are provided for continuously feeding sheet material through the stations. A cam periodically engages the tools of the respective punching and shearing sta ...


3
Method and means of continuously punching, shearing, and forming sheet material. May 24, 1984: WO/1984/001911

Apparatus for continuously punching, shearing and forming sheet metal (10) comprising a frame, and punching (16), shearing (18) and forming (20) stations thereon. Rollers (38, 52-61) are provided for continuously feeding sheet metal through said stations. The forming station (20) comprises adjustabl ...