Definition

• Ejector.  A mechanism, or tool, for removing a piece from a die after it has been struck in a press. Coining presses have a kickout pin to eject the struck piece from the collar   – the lower die moves upward pushing the piece free of the restraining collar. A simple spatula-like tool ejects a medal from the lower open face die in a medal press. According to mint historian Denis Cooper, the Italian engineer and clockmaker, Francesco Comelli, was the first to install an ejector in a screw press he constructed in 1786 for the Bologna Mint.
                                                                                                                         

  excerpted with permission from

  An Encyclopedia of Coin and Medal Technology

  For Artists, Makers, Collectors and Curators

  COMPILED AND WRITTEN BY D. WAYNE JOHNSON

  Roger W. Burdette, Editor

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