Patent GB-191415843-A (GB)
Title: Improved Means for Operating a Movable Member in a Mechanism by a Passing Body.
Inventor: COX HENRY ASHLEY
IPC: F16H53/00
Filed: 1914-07-02
Granted: 1915-07-02
Abstract: 15,843. Cox, H. A., Lloyd, G. E., and Osborne, H. E. July 2. Mechanical dispatch apparatus.-In apparatus having a member optionally movable by a passing body, transversely to the path of the passing body, a cam or roller connected to the movable member is arranged to be drawn into engagement with a roller or cam on the passing body by magnetic attraction, one of the cams or rollers being energized as an electro-magnet of which the co-operating roller or cam forms the armature. The invention is applicable, for example, to moving trays of goods from one carriage or trucker ' to another in goodssorting systems as described in Specifications 12,027/11, 3979/13, and 21,056/13, or performing other operations on units in conveyers automatically when certain positions are reached. In the form shown in Fig. 1, the cam 1 is formed on an elbow-lever pivoted at 2 to a body 3 and coupled at 5 to the parts which are to be moved. The cam roller 6 is mounted on the passing body 9, and may be magnetized by a coil 8 so as to attract the cam 1 and move it transversely as the roller passes along. A -fixed cam with a magnetizing coil may alternatively be mounted on the body 9 so as to engage with a roller on an elbow-lever on the body 3. In the form shown in Figs. 5 and 6 for transferring a tray 21 from a moving trucker 22 to another one 29, a cam surface 30 on the trucker 29 is magnetized by a coil 31 to attract a roller 27 on the tray and move it transversely by means of cams 23, 24 on the trucker 22 engaged by rollers 25, 26 which are carried by the tray. Magnetic extensions 35, 36 of the cams 23, 24 attract the rollers 25, 26 to retard the tray at the end of its transfer. A similar arrangement with a tray having a single roller to engage the cam and a single cam on the body 22 may be employed. In the form shown in Fig. 7, a lever is pivoted on the tray 41<a> at 42, and has two rollers 39, 41 bearing respectively on the magnetizable cam 46 and a rail 43 on the trucker 44. When the coil 47 is energized, the lever turns in a clockwise direction and the rollers 49, 50 on the tray pass transversely through the cams 49<a>, 50<a> in the trucker 44<a>, while the roller 27<a> enters the cam 39<a> in the other trucker. A ' pilot' device which makes another device ready to effect the transfer of a tray is shown in Fig. 10, the parts being shown so positioned that the tray 41<a> will not be transferred between the truckers 44, 44<a> when they pass each other. For transfer, the pilot cam 74 is magnetized and, by attracting the roller 76 on the pivoted part 72 of the main cam 70, it opens this cam to receive the roller 69 on the tray. A stop 69<a> may be used to limit the opening movement of the part 72, which is normally held in the position shown by a spring or the like. In the analogous form shown in Fig. 16, the tray 41<a>, shown by dotted lines, carries a cam 90 having a pivoted portion 92, which is opened by a magnetizable extension 95 of an auxiliary cam 96 on the trucker 44 when the tray 41<a> is to be transferred from the trucker 44<a>. After the roller 95<a> has entered the cam 96, the main roller 94 engages the cam 90 and effects the transfer; but if the magnet is not energized, the rollers 95<a>, 94 pass each other freely without transferring the tray. In Fig. 12 a form is shown in which the horizontal main cam roller 77 of the tray 41<a> is drawn vertically downwards to engage the main cam 84 on the trucker 44<a> for moving the tray transversely. The roller is moved down by an auxiliary cam 81 having magnetizing coils 83 to attract a roller 80 carried by the main cam spindle 76. which is held in either extreme position in its guide by a spring-pressed finger engaging grooves 84<1>, 85.