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1. 发明专利

GB116168A Improvements relating to Coin-in-slot Machines for Public Telephones. 未知
公开(公告)号：GB116168A
公开(公告)日：1918-06-06
申请号：GB860617
申请日：1917-06-15
申请人： ADAMS GUY CROZIER
发明人： ADAMS GUY CROZIER
IPC分类号： H04M17/02
摘要： 116,168. Adams, G. C. June 15, 1917. Hiring telephones; coin action, mechanical-connexion and multiple-coin.-In an apparatus adapted to receive coins of different values and to transmit corresponding signals to the Exchange, there is a separate hand-operated plunger 11, Fig. 1, for each value of coin, and these plungers are adapted to rotate a toothed disk 31, Fig. 5, controlling contacts 32 in the circuit of a buzzer 33 through one, two, three, or four teeth respectively, according as a penny, threepenny piece, sixpence, or shilling is inserted. The plungers 11, one of which is shown in Fig. 1, are provided with reduced inner ends and work through apertures in a plate 14, which is mounted on a stud 16 by means of a slot, and serves to lock the other plungers against movement when one is pressed in. Each plunger operates a spring-controlled lever 23 carrying a driving-pawl 28 engaging a ratchet 25 on a spindle 24, which is connected through a coiled spring 29, Fig. 8, with a barrel 30 bearing the disk 31 controlling the contacts 32. Adjustable screws 27 determine the normal positions of the spring-controlled levers 23. A fly 34 may control the speed of rotation of the barrel and disk 31. Forward movement of each plunger is limited normally by a spring-controlled detent 17, which projects into the path of a pin 18 on the plunger, but the inserted coin projecting up from a slot in the plunger moves the detent aside, a second pin retaining the detent in the displaced position when the coin passes clear. Small coins fall through a slot 12 in the casing into a return shoot 13. If a plunger has not been pushed in sufficiently far to rotate the ratchet 25 to the full extent an:l to permit the discharge of the coin, the plunger is locked against a second inward movement until the signalling operation is completed by a lever 41, which is raised into the path of a pin 42 on the plunger; the lever 41 is controlled by a floating plate 37, Fig. 8, operated by a spring 36 mounted on the barrel 30 and carrying a projection 35 which co-operates with a notch 34 in a plate 33 on the spindle 24.

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