Abstract: A rectilinear pen movement apparatus is provided which is responsive to an electrical signal representing a measurement of galvanic skin resistance in order to provide a record of galvanic skin resistance on a chart recording medium. There is provided a support frame and a drive motor mounted to the frame. The drive motor has an output means which rotates on a first axis in response to an input signal representing an electrical measurement of galvanic skin resistance. An input shaft connected to a potentiometer senses the rotation of the output means and provides negative feedback. The input shaft also serves as a step up movement for rotating a swing disc on a second axis parallel to the first axis. A recording pen is supported for rotation about the second axis by a support shaft which is rigidly attached to the swing disc. The support shaft rotates on a third axis parallel to the first and second axis so that the tip of the recording pen moves rectilinearly in response to rotation of the output means.

Abstract: A device for recording measuring values on a record carrier by means of two approximately parallel, linear motors which are pivotably connected to two arms which are both connected to a single recording head. A signal generator produces signals which indicate the position of the recording head and a control device controls the motors so that the recording head is moved, without a mechanical guide, along a straight line which is perpendicular to the transport direction of the record carrier.