Patent GB-763124-A (GB)
Title: Machine for punching of tape for recording telegraphic characters
Inventor: JENSEN KAJ LEO
IPC: H03M7/40
Filed: 1954-08-27
Abstract: 763,124. Electric telegraphy. STORE NORDISKE TELEGRAF-SELSKAB AKTIESELSKAB. Aug. 27, 1954 [Jan. 30, 1954], No. 24999/54. Class 40 (3). In apparatus for translating from one code to another, e.g. five-unit to Cable or Wheatstone Morse, and punching a tape in the unequal unit code and in which the punches are controlled by one set of combination bars and the tape feed is controlled by a second set of combination bars, the positioning of the sets of combination bars being determined by control members which are operated by selecting members set by the characters in the code differing from that to be recorded, the second set of combination bars is locked in adjusted position so that the control members can be released to take up new positions or settings as soon as the punching has been effected and before the tape is advanced. The five-unit characters are perforated in a tape 30 stepped by a ratchet 102 operated by a pawl 100 actuated by a lever 28f from a cam 22f on a sleeve 18 connected by a coupling 20 to a shaft 16 driven by a motor. The perforations are sensed by pins 108 on fingers 110 biased upwardly by springs 112 and withdrawn by a bail 114 operated by a lever 28g from a cam 22g on the sleeve 18. Lateral lugs 126 on the fingers 112 engage under the ends of five separate V-shaped members 128 pivoted on a common axis 130 mounted in an arm 134 operated by a lever 28d from a cam 22d on the sleeve 18. The other ends of the V-shaped members 128 are associated with projections 132 on five selector bars 54, and for those fingers which do not engage perforations, the ends of the members 128 engage the projections 132 and move the corresponding bars 54 to the right when the arm 134 is rocked clockwise by the link 28d. The selective movement of the bars 54 allows a bar 40 to drop into aligned notches 138 when an actuator 38 has moved ten combination bars 36 to the left and a bail 90 cooperating with extensions 92 on the bars 40 is moved downwardly by a lever 86 actuated by a link 28h from a cam 22h on the sleeve 18. The bars 36 are provided with teeth selectively arranged so that they are selectively held in their left-hand positions by this operated bar 40. A second set of combination bars 42 is also moved to the left by the actuator 38 and bar 40 selected is arranged to engage narrow notches 140 in all but one of the bars 42 which is selectively provided with a wide notch in association with a bar 40 so that this bar moves to the right when the actuator 38 returns to its normal position, the remaining bars 42 being retained in their left-hand positions. As shown in Fig. 2, the tape 32 to be punched is carried in a duct 64 in the punch block 34 and an extension 62. The punch block 34 carries twenty punch pins in two rows of ten arranged to coact with the ten combination bars and when moved to the right by the cam 22a on the sleeve 18 effects the perforation of the tape by those pins which coact with the bars 36 which are held against movement by the teeth on the selected bar 40. The feed pins 84 are mounted in a block 46 connected by a flexible spring arm 50 secured by a yoke 70 to a lever 66 pivoted at 68 and rocked by a cam 22c on the sleeve 18. The pins 84 are withdrawn from the feed holes by the leftward movement of the block 34 and the block 46 is moved upwards by the arm 50 and lever 68 until it is arrested by the end 76 of the lever 42 which was selectively moved to the right and determines the amount of tape feed for the character punched in the tape 32. When the block 34 moves forward to effect the tape perforation, the pins 84 on block 46 engage the tape and the movement of the arm 50 in conjunction with the cam 22c moves the block 46 downwardly until it engages the fixed stop 82. After the combination bars 36, 42 have been moved to the left and the selected bar 40 has dropped to retain all but one of the bars 42 and that bar has removed to the right, a casing 158 pivoted at 156 is rocked by a link 28b from a cam 22b so that the noses 166 of pivoted pawls 162 engage the projections of the bars 42 which were retained in their lefthand position. The control bar 40 can be raised when the tape 32 has been punched and before the stepping of the tape is effected. When the actuator 38 is next moved forward, the bar 42 is moved to the left and the frame 158 is rocked to remove the noses 166 out of engagement with the notches 168 so that the next selection can be made. For the case-shift combination detected in the tape 30, a control bar 40a or 40b drops into aligned recesses in the bars 54 and by engagement with the inclined side of a notch 154 moves a bar 54a to a right hand or left hand position in which it is held by a spring-biased toggle 142, 150. The bar 54a has notches 152 which determine the control bar 40 appropriate to the unequal length code. The actuation of bar 40a or 40b does not block the movement to the right of a control bar 42a provided with an extension 76a which in its right hand position prevents movement of the block 46 and therefore suppresses tape feed in response to the case-shift signals. The bars 40a, 40b are not provided with teeth holding the bars 36 in the left hand position so that the perforation of the tape 32 is not effected in response to the case-shift signals. Specifications 191,093, [Class 31 (ii)], and 763,125 are referred to.