Patent GB-814106-A (GB)
Title: Improvements in or relating to floor conveyor systems
Inventor: BURROWS ARTHUR THOMAS CHARLES
IPC: B65G47/48
Filed: 1956-07-30
Abstract: 814,106. Conveyers. KING Ltd., G. W, July 26, 1957 [July 30, 1956], No. 23445/56. Class 104 (2). In a conveyer system which has a processing area B and exit point D, a resequencing area J, K leading to a delivery station, alternative long and short conveyer paths in the resequencing area, a loop line F from the exit point of the processing area back through this area to the exit point, the combination of an indicator mechanism fitted to each truck 30 and having at least three setting positions 1, 2, 3 initially hand set at the starting position A to 1 or 2 to indicate bodies on the trucks which require reprocessing or single processing for direction by an operator at the exit point D, trip means at E for automatic resetting from 1 to 2 or from 2 to 3 (3 denoting rectification), and a selection device in the resequencing area at H dependent on the indicator setting whether the truck is to follow the long or short path, all trucks carrying unrectified bodies arrive at the exit point D indicating 2 and pass along the long path K while rectified bodies indicating 3 pass along the short path J. Cars are initially spaced according to whether single processing or reprocessing is necessary. The indicator mechanism comprises a casing 10 with a window 13 for viewing one of three plates 20 mounted on a plate on a slidable bar 18 set initially by a tool introduced through an aperture 12 in the casing into an opening 26 in the bar to indicate 1 or 2. The bar has suspended a roller 25 on a rod passing through a slot in the casing which carries a guide roller 28. A hinged cover 15 and transparent window 14 cover the indicators and a plate 27 masks unwanted indicators. Near the junction H of the resequencing area the roller 25 of processed or reprocessed, i.e. unrectified bodies, operates a selection device to cause the truck to take the long path K. At E in the reprocessing area the roller 25 moves between guide rails such as 32, Fig. 4 of a trip mechanism and draws the indicator to the succeeding position, i.e. 1 to 2. The roller 28 moves in fixed guide rails 31 of the mechanism. A processed body requiring rectification passes along E changing the indicator from 2 to 3 and near H is directed along the short path J. The sequence of trucks from the short and long paths J, K is maintained by a counting device which by operating one of two switches 52, 53 controls a stop in the path J or K. The device comprises two toothed discs 33, 34 on aligned shafts. The disc 34 is moved, one step by a pawl 38 operated by energizing a solenoid 39 through a cam switch at D operated by unrectified bodies and by rectified bodies when passing along E. The disc 33 moves with the disc 34 and is also moved in the reverse direction by all trucks passing out of the system. The disc 34 carries a series of pegs 41 corresponding with the teeth, each peg may be depressed by a solenoid energized by operating the cam switch at E by bodies to be rectified. The pegs control the movement of a pivoted lever 46 which operates the switches 52, 53 controlling the stops in the paths J, K. The lever is pivoted at 47 on a bracket on the disc 33. One end of the lever carries an arm 45 carrying a roller 44 which contacts the end of a peg 41. When the peg is not depressed the other end contacts the switch 53. When the peg is depressed the lever pivots, causing the end to contact the switch 52. A plough 54 restores the pegs to projected position. The invention is described with reference to applying monotone or duotone finish to car bodies. The trucks may be conveyed by projections on endless chains. The Provisional Specification describes an indicating device consisting of a wheel with three teeth, one of which is held in position by a pawl and a counting device having two levers with rollers, each lever operating a switch controlling the stops in the paths J, K.