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J. P. Udal of 80 Pershore Street, Birmingham, 5. Telephone: Midland 0621 (1937)
of Interlock Works, Court Road, Birmingham 12 (1951)
c.1923 John Pountney Udal developed automatic guards for the protection of operators working power presses. He went into business on his own account, having extended his invention to cover guillotines and other printing machinery.
1934 John Udal died
1937 Listed Exhibitor - British Industries Fair. Automatic Guards for Power Presses, including "Longpull", "Safepull" and "Clutchlock" Types. Guards are shown on Presses running under power enabling practical tests to be made. Guards for Printing Machines etc. (Stand No D.524) 
1957 Patent - Safety devices for use with machines. 
1963 Patent - Conveyors.