Projection scale with price indicator

Details Projection scale with price indicator Projection scale with price indicator

1975-10-29

1976-11-16

Hartary, Joseph W.

Weighing scales

Computer

Tabular-type computer

177178, 353 41, G01G 2334

Patent

active

039918394

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.

REFERENCES:
patent: 1721398 (1929-07-01), Jacob
patent: 3912027 (1975-10-01), Schwarz
patent: 3912028 (1975-10-01), Schwarz

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