Patent GB-460442-A (GB)
Title: Improvements in or relating to apparatus for playing off sound films
IPC: G11B33/06
Filed: 1935-07-26
Abstract: 460,442. Spool holders for strip films. MODREY, H. J. July 26, 1935, No. 21251. [Class 97 (i)] [Also in Group XVIII] A sound - film reproducing - apparatus is adapted to be converted from a coin-freed into a non-coin-freed apparatus, or vice versa, by the employment of film spool holders of different construction. Figs. 1 and 3 show one embodiment of coil-freed apparatus in which a casing 1 containing a film spool 2 is rotatably mounted bv means of ball bearings 1<a> on the casing 8 containing the mechanism of the sound-film reproducing-apparatus. The casing 1 has a slot 4 adapted to receive a coin 7, springs 5, 6 being mounted in the slot so as to prevent withdrawal of the coin after insertion. The motor driven spindle 3 is provided with a bifurcated coin-receiving member 9 and has a pinion 16 loosely mounted thereon and adapted to be coupled thereto on insertion of a coin by the depression of a pin 10, Fig. 3, by the coin against a spring 10<a>, the tapered lower end 11 of the pin pressing spring-constrained pins 12, 13 into holes 14, 15 in the pinion. The pinion drives a gear-wheel 17 carrying a resilient finger 17<a> in the direction of the arrow, Fig. 1, the finger 17<a> during part of its travel encountering the wall of the casing 8 as shown and thereby becoming stressed. During the further travel of the finger, it is released from the casing and thereupon sharply strikes the coin 7 so as to dislodge it into the shoot 19 thereby severing the connection between the spool 2 and spindle 3 and releasing the pins 10, 12 and 13. During part of its travel, the finger 17<a> also strikes the wheel 21 of a counter mechanism 22 which indicates the number of coins inserted in the apparatus. The above described arrangement may be converted into a non-coin-operated apparatus by substituting for the casing 1 a casing 23, Fig. 2, carrying a spindle 24 having a recess 25 engaging over and not into the member 9 thus establishing a direct connection between the spindle 3 and spool 2 while the pinion 16, gear-wheel 17 and counter mechanism 22 remain inoperative. Fig. 5 shows a modification in which the casing 1 for coin actuation is provided with a finger 36 adapted to pass through a hole 8<a> in the casing 8 and depress one end of an electrical switch lever 37 against the action of a spring 38 into contact with a lead 42 leading to a second switch lever 43. The coin 7 on insertion in the slot 4 depresses the end 48 of lever 43 thereby closing the circuit of the motor 35 at 47 and setting a time switch mechanism 16 into operation to hold the end 48 depressed for a predetermined period. If desired, the time switch mechanism may be combined with a counter mechanism. When this arrangement is employed as a non-coinoperated apparatus, the casing 1 is not provided with a finger 36 so that spring 38 maintains the other end of lever 37 in contact with lead 39 leading direct to terminal 40 of motor 35. In order to prevent fraudulent operation, the hole 8a may be given a keyhole-like shape and the finger 36 shaped correspondingly. The film spools are preferably so constructed that they can be easily converted from one kind into another.