Price indication apparatus in which unit price setting is changeable from outside

Claim 1

A price indication apparatus in which setting of a unit price is changeable comprising: a computer part comprising a cone gear which consists of a plurality of gear portions each having a different number of teeth and is revolved according to the measured flow quantity of the fluid, unit price setting gears provided for each figure of the unit price to be set each of which gears meshes with one of the gear portions of said cone gear corresponding to the unit price to be set, shafts each of which is revolved by the revolution of each of said unit price setting gears and guides saiD gear vertically slidably, a planetary gear group which is revolved by a rotational force transmitted by each of said shafts and substantially effects computation of said measured flow quantity and the set unit price, and unit price setting levers each of which is provided so as to slide vertically guided by said shaft and integrally with said unit price setting gear and rotate about said shaft, said lever being controlled in its height by engaging with a projection fixed to the frame of the apparatus, whereby the gear portion of said cone gear to be meshed with said unit price setting gear is selected; a price indication part for taking out the result of operation in said computer part from the output of said planetary gear group and indicating it as a total price; and an operation part for changing the set unit price provided for each figure of the unit price to be set comprising an operation knob, an operating rod provided at one end thereof with said operation knob and held in a horizontally movable position, means for converting the horizontally moving force of said operating rod into a vertically moving force, means for lifting said unit price setting gear and said unit price setting lever along said shaft by said vertically moving force obtained by said converting means, means for taking out and transmitting a rotational force of said operating rod during its rotation about its axis, and means for rotating said unit price setting gear and said unit price setting lever about the axis of said shaft by the rotational force received from said means for transmitting the rotational force; wherein said operating rod being rotated by an angle corresponding to the desired unit price to be set thereby to rotate said unit price setting gear to a position opposed to the gear portion of said cone gear corresponding to the desired unit price to be set, and said unit price setting gear and said unit price setting lever being lowered by return of said operating rod to its initial position before its movement and respectively engaged with the gear portion of said cone gear and said projection.