Patent GB-392148-A (GB)
Title: Improvements in or relating to control devices for turnstiles and the like
IPC: G07C1/06
Filed: 1931-11-03
Abstract: 392,148. Time-checking apparatus; turnstiles. INTERNATIONAL TIME RECORDING CO., Ltd. and MILES, J. W., Beavor Lane, Hammersmith, London. Nov. 3,1931, Nos. 30489/31 and 613/32. [Classes 106 (iii) and 106 (iv).] In a combined time recorder and control apparatus for regulating the use of an entry or exit such as a turnstile, the correct positioning of a card in the time recorder closes a plurality of series connected pairs of contacts thereby momentarily energizing a circuit which either electrically operates the recorder to stamp the card, or releases the recorder for manual operation, the turnstile locking means being released, in both cases, simultaneously with stamping of the card. Each card 24, Fig. 4, is provided with one or more holes, indentations, or other deformations 22, and, when inserted in the aperture 6, Fig. 2, depresses a feeler 18, mounted on a bell-crank lever 16 pivoted at 17, Fig. 15. A projection 15 on the arm 16 is thereby rocked past an abutment 19 on a pivoted lever 14, but when the feeler engages its corresponding hole 22, Fig. 14, the projection 15 returns to engage the abutment, lifting lever 14 to close contacts 12, 13. Contacts 10, 11, Fig. 2, are closed similarly by a further feeler and associated levers (not shown). Contacts 8, 9 are also closed as the card is positioned correctly and a circuit is now completed from the supply 27 through series contacts 8, 9, 10 .. 13, to the turnstile release device 26 in parallel with an electromagnet 45 for actuating the time stamp 7. The circuit is only momentary, being tripped as soon as it is made, by known mechanism, for example as shown in Fig. 16. Here, the card 24 when fully inserted rocks a lever 46 pivoted at 47 against the bias of a spring 63, the cranked part 51 of a lever 49, 50 pivoted at 48 to lever 46 forcing contact 8 into engagement with contact 9. When magnet 45 is energized, it attracts an armature 57 pivoted at 58 to rock a bell crank 60 to lift lever 49, 50 and allow a spring 55 to separate contacts 8, 9 and open the circuit of magnet 45. The lever 49, 50 then falls and rides upon the abutment 52 of lever 53 until the card 24 is withdrawn when spring 63 pulls lever 46 to the left, the cranked part 51 again operatively engaging the abutment 52. Turnstile release. The turnstile arm 2 is normally held by a projection 38 thereon abutting against a bolt 29, Fig. 13, pivoted at 33 and held in its extended position against the bias of a spring 37 by a detent 40 pivoted at 41. The device 26, Fig. 2, comprises a magnet 42, Fig. 13, which when energized lifts the detent 40. The spring then retracts the bolt 29, rocking a crescent-shaped member 36 about a pivot 35 to move a catch 30 pivoted at 33 into the path of the turnstile projection 38, which when rotated engages the bevelled end 43 of the catch and rocks the latter to normal, member 36 rocking to reset the bolt 29 to the locked position where it is held by the detent 40. When the invention is applied to known manually-operated time recorders, the latter are normally locked, being released for operation when the series circuit 8, 9 .. 13 is completed by the card 24. The turnstile is then released as the recorder is actuated to stamp the card. To ensure the cards 24 being stamped tabularly, the stamp 7 may be adjusted automatically at predetermined intervals by the clock mechanism of the time recorder, and laterally adjustable stops may be provided for the aperture 6. According to the second Provisional Specification tabular stamping is achieved by the provision of card stops periodically adjusted by the clock mechanism.