Patent GB-1112920-A (GB)
Title: Improvements in or relating to automated storage apparatus
IPC: B65G1/04
Filed: 1966-06-13
Abstract: 1,112,920. Inductive control of conveyers. HARTMAN METAL FABRICATORS Inc. 13 June, 1966 [7, Sept., 1965], No. 26296/66. Heading H4U. [Also in Division B8] A device for adjusting the stopping position of a movable load carrier in an automated storage apparatus of the type wherein the control mechanism for the load carrier comprises a pair of conductors which cross one another at predetermined points along their lengths, an elongated support for the conductors, and signal-receiving means carried by the carrier to travel with the carrier along the conductors in operative relation to the conductors to stop the carrier at a selected one of the points upon receipt of a predetermined signal, comprises a plate mounted on the support for adjustment longitudinally thereof, and means on the plate for holding the conductors adjacent the selected point of crossing and operative upon longitudinal adjustment of the plate to shift the related point of crossing longitudinally of the support. The control mechanism is similar to that described in Specification 1,062,246. The carrier is adapted to move a load between a pick-up and discharge station and a selected one of a plurality of storage bins arranged in horizontal and vertical rows and comprises a carriage 11, Fig. 1, which is power-driven along a track 10 and has a mast 16, Fig. 2, along which is power-driven an elevator 17. The latter may have extendable carrying means thereon for moving the loads into and out of the bins. The pair of conductors 21, 22 are insulated and are connected at one end to a source of alternating current and at the other end to one another across a resistor 25. They are mounted on a dielectric surface of the track 10. The crossover points 27 are in register with successive columns of bins and the conductors are crossed back again at points 28 disposed intermediate the points 27. The signal-receiving means is formed by a transducer 26 which senses the magnitude and phase relationship of the current in the conductors 21, 22 and is used to accurately stop the carriage 11 at a selected one of the cross-over points 27, counting mechanism being used to preselect the point 27. The carriage is slowed down as it approaches the selected point 27 at a rate determined by the inclination of the crossed conductors and if it overruns the point 27 it is reversed. The track 10 extends along the centre of an aisle between two racks of storage bins. The stopping position of the elevator 17 is similarly determined by two insulated conductors 41, 42 having cross-over points 47 in register with vertically successive bins in the columns in co-operation with a transducer 46 travelling with the elevator and a cross-over point preselection counting mechanism. Each cross-over point 27 or 47 of the conductors is provided with an adjusting plate 30 or 50 adjustably secured face down in the track 10 or the mast 16. Each plate 50, Fig. 4, is formed of dielectric material and has a small X-shaped central aperture formed by slots 54 which are connected to inclined grooves 55, 58 on the face of the plate in which the conductors 41, 42 are held, the grooves 58 being inclined at a greater angle than the grooves 55 to allow for gravity. Each plate 30 is similarly formed with a central aperture at (32, 33) (Fig. 3, not shown) and with inclined grooves (34, 36). Openings (40), 64 are provided in the plate 30, 50 for use with a pointed instrument for adjustment of the plates.