GB828249A - Improvements in or relating to conveyor systems - Google Patents

Abstract

828,249. Overhead conveyers. KING, D. M. March 13, 1958 [March 18, 1957], No. 8814/57. Class 104 (2). A conveyer system has load trolleys 11 moving on a fixed overhead channelled track 10 propelled by axially sliding pusher dogs 18 carried by an endless driving chain 12 above the track, the dogs sliding transversely relatively to the chain into and out of operative engagement with the trolleys. The pusher dogs slide in brackets 16, 17 secured to arms 13 suspended from trolleys 14 moving on an overhead channelled track 15. Each dog mounts a pin 19 carrying a roller 20, one end of the pin normally rests on the chain and moves upwardly when the roller engages a ramp 21 positioned at selected points along the track, the ramp being displaced upwardly by any suitable means to disengage the dog from the trolley. The rollers and ramps may be mounted in pairs, one on either side of the dog. The ramps may be interconnected to automatically disengage the drive to the next trolley. One dog may be positioned in front of the trolley to act as a retainer on slopes. To prevent inadvertant displacement of the dogs such as may occur at bends or on slopes fixed ramps or guide tracks may be positioned above the rollers. The dogs may have a pivoted tongue at the lower end to allow passage of a trolley travelling in a direction opposite to that in which the trolleys are driven.