Abstract: A self-illuminant delineator including a plurality of light-emitting diodes being flickerably disposed on the sign surface of the delineator and covered by a transparent cover, a solar cell module being disposed on the top surface of the delineator and covered with a transparent cover, a transmission means and/or a receiving means for a signal which controls the flickering of the light-emitting diodes. Also a self-illuminant delineator system including a plurality of the above self-illuminant delineators which are installed to form a line-up of an eye-guiding, traffic or other sign along a shoulder of a road.

Abstract: A protective means for a feeder of machinery having means for transmitting control signal formed from the differential between a predetermined revolution speed and an actual revolution speed of a DC-motor for driving the feeder, and a means to control current in the DC-motor according to said control signal, thereby protecting the motor against excessive current.

Abstract: A directional switching device for a feeder in a machine tool driven by a direct current motor. The armature circuit of the direct current motor is provided with a relay contact circuit for switching the forward and backward movements of the conveyor. The relay contact circuit is controlled by signals from a sequencing circuit.