The Collaborative International Dictionary of English v.0.48:

Wilfley table \Wil"fley ta`ble\ (Ore Dressing)
   An inclined percussion table, usually with longitudinal
   grooves in its surface, agitated by side blows at right
   angles to the flow of the pulp; -- so called after the
   inventor.
   [Webster 1913 Suppl.] Wilfully
   Wilful