Counting or indicating ring device

Details Counting or indicating ring device Counting or indicating ring device

1975-06-10

1977-02-22

Jackmon, E. S.

Registers

Calculators

Adding pencils

235103, 235117A, 235144DM, 235144S, 235144SM, B43K 2908, G06C 2700, G06C 1542

Patent

active

040093700

ABSTRACT:
A counting or indicating ring device has indicating rings which are respectively provided with numerals or marks on a pitch circle thereof and are supported by a shaft, step advancing means spaced adjacent to one of the indicating rings to advance it step by step, operating means arranged parallel and eccentric to the ring axis and longitudinally movable to operate the step advancing means relative to the indicating rings, resetting means for resetting the indicating rings and which includes a knob to drive the shaft to rotate after pushing operation thereof, and a stopping bar spaced close to the indicating ring peripheries coacting with the pushing operation of the knob. The shaft has a click-stop spaced in the casing for stopping the shaft at a predetermined angular position thereof. The knob is also used for effecting the engagement and disengagement of the operating means with the step advancing means, with a proper angular rotation without pushing-in. Mistaken or faulty pushings-in of the knob at an unsuitable angular position are obstructed by obstructing members. An indicating window is provided close to the indicating ring periphery opposite to the stopping bar in the casing.

REFERENCES:
patent: 3390834 (1968-07-01), Seiden
patent: 3843047 (1974-10-01), Otsuka et al.

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