Patent GB-805427-A (GB)
Title: Improvements in or relating to document-inverting apparatus
Inventor: HAINES SIDNEY ROBERT
IPC: G06K13/04
Filed: 1956-07-18
Abstract: 805,427. Sheet-delivery apparatus. POWERS-SAMAS ACCOUNTING MACHINES, Ltd. June 7, 1957 [July 18, 1956], No. 22305/56. Class 100(1) Apparatus for inverting documents, e.g. statistical records cards comprises a normally inactive turning device to which documents are fed one at a time, activating means co-operable with the device to effect angular movement thereof through 180 degrees about an axis of rotation which lies in the plane of and extends lengthwise of the line of movement of a document to and from the device thereby to effect inversion of the document and to locate it in the plane in which it was located before inversion thereof, and means operable to move a document from the device. The documents are such as are printed on both sides, one side being printed after the other side is full. As shown in Fig. 3 the cards are fed, all with the same side uppermost. to a front stop 6, operated by a cam 7 on a main shaft 8. The apparatus includes two transversely adjustable sensing pins 9, 10 arranged to effect sensing of perforations in the cards indicative of which side of the card is full. The pin 9 detects the perforation indicative of one side of the card and the pin 10 the perforation appropriate to the other side. The sensing pins are raised and lowered at appropriate times by a rocking shutter 14. The pins are mounted on brackets 11 slidable on a rod 12 connected with one side of an electrical source. If a pin passes through a perforation it makes-contact with a strip 15a electrically connected with strips 15b and 15c or 15d,. depending on which pin has sensed a perforation, mounted on a bar 15e. The strips 15c and 15d are connected to complete an electrical circuit through a solenoid 16 (Fig. 6) which is energized to withdraw a latch 17a out of engagement with a clutch trip lever 17. After sensing the card is fed by rollers 23, 24 to the turning device which consists of two spaced plates 25 26 secured to a pivot 27 supported in a frame 28 for angular movement about an axis in the direction of travel of the cards. The plates 25, 26 support spindles to which are secured feed rollers 31, 32 each spindle having a driving member 33 secured thereto for co-operation with a continuously rotatable drive dog 34 (Figs. 4 and 5). The dog 34 is secured to a spindle 35 supported for axial movement within a gear 36 continuously driven by a gear on a shaft 38, itself driven from a shaft 20. In operation the solenoid 16 is energized on the detection' of a card having a full side and requiring inversion. Energization of the solenoid 16 releases the lever 17 so that a clutch pawl 18 carried by a disc 19 fixed on the rotating shaft 20 engages with a clutch dog 21 freely rotatable on shaft 20 and connected to a sleeve 22. As sensing is of short duration a hold-on relay is provided to maintain the relay 16 energized for the requisite length of time. The sleeve 22 is attached to a disc 52 having a stud 53 located in a slot 54 of a transversely slidable plate 55 carrying a rack 56 for co-operation with the pivot 27. After 180 degrees rotation of the sleeve 22, and consequently of the pivot 27 and turning device, the pawl 11 is released from the dog 21 by a trip member 57. The lever 17 is restored to its original position by a cam 51 on the disc 19. The disc 52 is prevented from overrunning by a detent lever 58 which co-operates with detent pins 61 on the disc 52. To eject the card from the turning device the drive dog 34 is engaged with one of the members 33 by the action of a cam 43 on the shaft 20. The cam causes rocking of a lever 45 attached to a rock shaft 46. A second lever 47 is attached to the rock shaft 46 and also to the spindle 35 so that the latter is slid to the left as viewed in Fig. 5 until the dog 54 engages the member 33. The card is thereby ejected between rollers 63a and deflected inta a receiver 64. In the event of the pins 9 and 10 both sensing perforations thus indicating that a card is full on both sides, a circuit is completed via both strips 15c and 15d to energize a solenoid 66 which causes a deflector 71 to move to the broken line position shown in Fig. 3 so that the card is deflected into a receiver 73.