Patent GB-456251-A (GB)
Title: Improvements in or relating to composing and type line casting machines
IPC: B41B27/10
Filed: 1936-02-28
Abstract: 456,251. Type-bar-making machines. TELETYPE CORPORATION, 1400, Wrightwood Avenue, Chicago, U.S.A. Feb. 28, 1936, No. 5991. Convention date, March 4, 1935. [Class 100 (iii)] Driving -mechanism; assembling matrices ; escapements ; quadding- apparatus.-In record-strip controlmechanism of the kind described in Specifications 448,880 and 449,088, having means for delaying the action of certain signals in the strip, means are provided for rendering the delaymechanism or other agency responsive to a larger number of signals. The strip 12 is interpreted by feelerlevers 14, and is fed by ratchetmechanism operated by a lever 19 and a cam on a constantly rotating operating - shaft 25. The delaymechanism is similar to that of the prior Specifications, and comprises ratchet-mechanism which is brought into action while the strip feed is disabled, in order to rotate a shaft 43 step by step. At the end of the delay, a special lever 15 associated with the feeler-levers 14 is shifted, so that, on the next operation of the transfer-levers 52, a blocking-bar 55 is withdrawn, and the delayed signal, such as one of a pair for operating the duplex rail of the assembler, is permitted to act. According to the invention, the links 53, that connect the primary code-bars 54 to the transfer-levers 52, have extensions 63 bearing auxiliary code surfaces in the form of notches in their lower edges, which co-operate with a series of nested bails 74. When an alignment of notches is produced in the code-bars 63, one of the bails is raised into it by spring action. Three of the bails serve to close circuits which actuate a quadding-control mechanism, such as that described in Specification 450,505. Two bails operate an escapement-reed shift-mechanism for effecting a change of magazine. These five bails are normally blocked by a member connected to the blocking-member 55, so that a signal selecting one of them does not at once act. The two remaining bails, which are raised immediately that a signal selecting one of them is presented, constitute secondary selectable members, and serve to bring the delay-mechanism into action. They are adapted to lift a bail 86, which acts through a link 92 to rock a cradle-member 40. An arm 37 of the cradlemember is moved into the path of the lever 19, so as to arrest the strip feed, and to permit a pawl 33 to engage a ratchet-wheel 35 and start the delay-mechanism. At the end of the delay, the blocking-members are moved and the delayed signal operates. The two delay-bails are selected concurrently with the duplex-rail and escapement-reed shift-members respectively. As the two signals of the pair allotted to each of these functions differ by only a single signal-element or perforation, only a single duplicate notch in one of the code-bars 63 is necessary to cause the appropriate bail to act with each signal of a pair. The number of signals to which the delay-mechanism is responsive can therefore be increased by the provision of additional delay-bails, and its action can, at the same time, be restricted to any desired definite number of such signals. Specification 415,798 also is referred to.