DEVICE FOR SIMULTANEOUSLY CONTROLLING ROTARY SHAFTS OF A PLURALITY OF VARIABLE RESISTORS

摘要

A control device is provided which is capable of simultaneously controlling the rotary shafts of a plurality of variable resistors by one control shaft. The device is, for example, used in a stereophonic electric gramophone in which a plurality of volume controls must be simultaneously adjusted. A plurality of variable resistors are mounted coaxially on a pair of opposed walls of an outer frame which in turn is fixed in a casing, and an inner frame is rotatably carried in the outer frame by the rotary shafts of the variable resistors mounted on the outer frame. Another plurality of variable resistors are mounted on a pair of opposing walls of the inner frame at right angles to the walls of the outer frame mounting the one plurality of variable resistors, in such a manner that the axes of the other plurality of variable resistors are at right angles to those of the one plurality of variable resistors. One control shaft extending through the top of the casing is fixed to the rotary shafts of these variable resistors, whereby the variable resistors mounted on the outer and inner frame may be simultaneously or selectively adjusted by inclining the control shaft.