The Collaborative International Dictionary of English v.0.48:

Tachyscope \Tach"y*scope\, n. [Gr. tachy`s quick + -scope.]
   An early form of animated-picture machine, devised in 1889 by
   Otto Ansch["u]tz of Berlin, in which the chronophotographs
   were mounted upon the periphery of a rotating wheel.
   [Webster 1913 Suppl.]