GB897583A - An endless conveyor installation with selection control for delivery of goods at selected receiving stations - Google Patents

Abstract

897,583. Endless conveyers for delivering goods at selected positions. DURKOPPWERKE A.G. Dec. 10, 1959 [Jan. 9, 1959], No. 41998/59. Class 78 (1). A conveyer for delivering goods in transport boxes T at selected positions arranged along its length on both sides of the conveyer comprises a pair of endless chains 51 between which are mounted by their diagonallyopposite corners rectangular carriages F, the arrangement being such that the carriages remain horizontal in upper and lower runs of the chains and when passing over suitable guides (not shown) from one run to the other. Each carriage carries rollers running on rail tracks 55 and a platform 59 which supports a transport bar T and is supported on the carriage by two longitudinally-extending pins 66 on opposite sides of the platform engaging in opentopped pivot bearings 60 on the carriage. A selector device comprising two sets of push-buttons 72 is also mounted on the rear of each carriage, each button 72 when depressed causing downward projection of a contact member 71, and the arrangement being such that whenever one button in each set is depressed it releases any previouslydepressed button. At each of a number of positions along the conveyer there is a sensing device comprising a pair of microswitches 73, 74 connected electrically in series. When a carriage reaches the selected delivery position the two contact members 71 on the carriage simultaneously operate the microswitches 73, 74 at that station to complete a circuit to a solenoid 76 which moves a shaft 78 to project a roller 79 into the path of a stirrupshaped rail 67, mounted on and depending from the platform 59. A drop pawl 80 engages the end of the shaft 78 to prevent it from being returned by a spring 77. As the carriage arrives opposite the delivery position rollers 70 on one side of the platform 59 pass under a retaining rail 82 secured to the edge of a receiving table 83 at the same side of the conveyer, while at the same time the roller 79 engages the inclined portion 67<SP>1</SP> of the stirrup 67 to raise the platform. Since the platform is held down at the delivery side by the rail 82 the platform is tilted, as a result of which stop. members 84 on the carriage, normally projecting through slots in the platform to retain the box T, are made flush with the surface of the platform, so that the box T slides by gravity on to the receiving table 83. After delivery a release lever 86 on the carriage engages and pivots the drop catch 80 to allow spring 77 to return the roller 79 out of the path of the stirrups 67 of following carriers. Rollers 70 are provided on both sides of the platform so that by the above arrangement boxes T are delivered to the delivery tables of successive receiving stations on opposite sides of the conveyer, the rail 82 being arranged to hold down the side of the platform 59 adjacent the receiving table.