GB848454A - A new or improved arrangement for the remote control of toys - Google Patents

Abstract

848,454. Remotely controlled toys. NOTHELFER, W. Nov. 12, 1956 [April 12, 1956], No. 34576/56. Class 132(3). [Also in Group XXXVIII] In a toy vehicle, remotely controlled by light rays, sound or electromagnetic wave signals, a signal pulse of any length initiates steering control and a signal pulse exceeding a predetermined duration initiates operation of a reversing switch to a driving motor. In the circuit shown in Fig. 1, an audio signal, e.g. a human voice, a bell, a whistle or a buzzer, is received by a microphone 1 and the pulse set up in the microphone circuit is rectified at 5 and operates a relay 6 and switch 7 to actuate an electromagnet 8 which attracts a spring loaded pawl 9 which in turn releases a lever 10 from a snout 13, the lever then being rotated by a driving mechanism, e.g. a spring motor, until it engages a snout 11. When the pulse ceases, the magnet 8 releases the spring loaded pawl 9 and the lever 10 is released from the snout 11 and completes its rotation to the snout 13, rotation of the lever effecting, through gears 14, 15 and a pin 16, change in the toy's steering. Attraction of the pawl 9 by the magnet 8 also makes a contact 23 and completes a circuit including an electromagnet 24, which actuates stepwise operation of a reversing switch 53 to a motor 30, and time delay means 25, 26 which ensure that only pulses exceeding a predetermined duration are effective in operating the switch 53. To increase the sensitivity of the microphone 1, a transistor amplifier may be incorporated in the microphone circuit. In a further embodiment, Fig. 5, pulses received at E actuate a magnet coil 38 which operates a step-by-step switch 38<SP>1</SP> and a control drum 39 in circuit with a control motor 37. A pulse of any length switches on the control motor which turns a gear wheel 15 to effect steering through a pin 16. To limit the travel of the pin to 90 degrees, the gear 15 carries contact pieces 43 which, during rotation of the gear, brush against a contact spring 41 and complete a circuit to the magnet coil 38 to operate the switch 38<SP>1</SP> and stop the control motor. Operation of the switch 38<SP>1</SP> also makes a contact 23 and if the control pulse is sufficiently long that the contact 23 is still made when contact piece 43 brushes a contact 42 then a circuit including the magnet coil 24 is completed which operates a switch 51 controlling the toy's driving motor. Each of the pulses may control more than one function, e.g. a third control circuit or further circuits can be released by the control magnet 24 as shown in Fig. 3, e.g. a lighting circuit may be switched on and off. Frequency dependent elements may be used in combination with the time dependent elements. A watertight microphone can be used underwater in a model boat. The microphone can be replaced by a receiver for electromagnetic waves or a receiver for light waves.