A blending machine to blend margarine and butter together

摘要

208,464. Stallworthy, H. E., and Allen, A. J. April 5, 1923. Hand domestic appliances for blending butter and margarine comprise an open-ended tube C having a removable cap E and a fixed central grid B through which the butter &c. is forced, backwards and forwards, by means of a plunger one or more of whose sides is curved to the contour of the tube.