Patent GB-412509-A (GB)
Title: Improvements in or relating to sound recording and advertising apparatus
IPC: G07F17/16
Filed: 1934-01-08
Abstract: 412,509. Sound recording and reproducing apparatus. FIELD, J., Cross Keys House, Moorgate Street, London. Jan. 8, 1934, No. 708. [Class 40 (ii).] The apparatus comprises a coinfreed electrically operated sound recording and record delivering machine in combination with an illuminated advertising device consisting of an endless perforated band which is moved continuously, means being provided for cutting out the light when a record is being made and for causing the performance of the operations in regular progressive sequence. A beacon light flashes during the making of the record, and a shutter is automatically projected to shield the operator's head during recording, and automatically retracted when the record is made. Provision is made for playing over a record, an envelope and needle being obtained from a coin-freed apparatus. A loud-speaking apparatus for issuing instructions or advertising matter may also be provided. Figs. 2 and 4 are general views of the machine at right angles to each other. An endless advertising band 12 passing over vertical, inclined, and horizontal rollers is driven continuously by an electric motor and is illuminated by electric bulbs placed behind its horizontal portion at the top of the machine. Instructions &c. may be delivered through a loud-speaker 151 from a gramophone record previously prepared and placed on a turntable 160, Figs. 2, and 15, driven by an electric motor 4. The record is clamped to the table by a worm 162 on the motor shaft 161, the worm being held in position by a clamping screw 161<a> and driving a screw 167. The sound-box 186 is carried by a tone-arm 182 which is pivoted to a rotatable bracket arm 175. When the tone-arm 182 reaches its inner position, it is lifted by engagement of a bearing plate 188 thereon with a roller 171 on a collar fixed to the screw 167. This raises the needle off the record and causes a screw 187 on the tone-arm to depress a spring 183 on the bracket 175 into engagement with the return screw 167 so that the bracket and tone-arm are traversed back to their outer position where the sound-box is lowered for the record to be played again. When the sound-box 186 is lowered, a mercury switch 195 on the tone-arm breaks the circuit of the lamps lighting the advertising band 12 so that advertising by the record and the band takes place alternately. Recording.-After insertion of a coin and operation of a hand switch, the circuit of a motor 2 is made. This motor rotates a vertical shaft 31 which through worm gearing drives a shaft 24 carrying two cam discs 26, 27 and a crank pin which actuate record blank feeding, recording, and delivery mechanisms in proper sequence. The blanks are carried by a table 72 which is fed upward by chains passing over sprocket wheels rotated step-by-step from the crank pin on the shaft 24. They are positioned on the table by three guide rods 75, 77. A turntable 33 is also raised by linkage actuated by the cam 27 and, when it reaches the level of a guide plate C, the topmost blank is pushed on to it by a slide block 99. The table 33 is then raised farther to clamp the blank between a spring-pressed plate mounted on the table and a flange 32 on the end of the shaft 31, from which the table receives rotation, the table having a stem 51 passing through a bearing 52. The cam 26 actuates a lever 34 carrying a recording apparatus which is operated by a microphone 42 through an amplifier 43. The cam 26 also through a lever, links, and chain and sprocket gearing 116, 117, 118 causes a shutter 114 to open and close. The sprocket wheel 116 is carried by a counter-shaft 115 which is oscillated at each revolution of the cam. An extension of the lever operated by the cam 26 actuates a switch controlling the motor 4. The shaft 115 through a pair of levers 132 causes two shields 131 to project one on each side of the operator's head, when he is speaking into the microphone 42. When the shutter 114 is open it exposes an indicator 133, Fig. 13, over which a pointer 134, connected by a wire 136 to the tone-arm 34, moves to inform the operator when to start and stop speaking. The circuit of a beacon lamp 207, Fig. 4, is closed intermittently during the time available for recording by an irregularly shaped cam on the shaft 31 actuating a mercury switch. The record, when made, is delivered to a box 69 and the cams 26, 27 restore the parts to their initial position, the motor 4 and the advertising lights being again switched in. The switch for starting the motor 2 comprises a hand lever 218, Fig. 19, which is pulled down against a return spring 246. A toe 252 actuates a forked arm 224 carried by a floating pivot 214 to close a switch 225 in the circuit of motor 2. An arm 242 of the lever 218 has a pin 217 which is engaged by a hook 216 of a detent lever 211, 212. After one revolution of the shaft 24, a link 222 raises a link 220 to free the hook 216 and allow the lever 218 to be returned to its initial position and the motor 2 to be stopped. Reproducing.-The record can be played on a gramophone 140 the table of which is locked until a record is placed in position. Movement of the tone-arm 141 of the reproducer on to the record closes a mercury switch to start a motor 3 driving the table 140. The reproduction can be heard through ear-phones or through the loud-speaker 151, in the latter case a two-way switch being provided to cut out the advertising gramophone 160.