Encased Disc Patents (Class 177/40)
  • Patent number: 3991839
    Abstract: A price-indicating projection weighing scale provided with a plurality of projectable graduation scales on a support member having several price scales each corresponding to a certain base price, the support member being movable in dependence of weight, and an optical projection system comprising an objective which is movable and indexable opposite a graduation scale in dependence of the pre-selected base price for projection of a section of the price graduation indicia on a focusing screen. The objective is affixed to a movable support which is movable and positionable via an adjustment unit, operated from the outside, which is set in accordance with a selected base price of the merchandise to be weighed.
    Type: Grant
    Filed: October 29, 1975
    Date of Patent: November 16, 1976
    Assignee: Bizerba-Werke Wilhelm Kraut K.G.
    Inventor: Josef Schwarz