Patent GB-248816-A (GB)
Title: Improvements in ruling machines
IPC: B41G3/00
Filed: 1924-11-13
Abstract: 248,816. Lindbladh, H. E. Nov. 13, 1924. Sheet carriers and forwarders ; sheet-registering devices.-In duplex ruling-machines of the type in which sheets or the like, after having parallel lines drawn thereon in one ruling-apparatus, are delivered at an angle to another ruling-apparatus to produce lines at an angle to those first ruled, the operating means for the ruling-devices of one apparatus are arranged for positive and direct initiation to start and terminate the lines ruled in definite controlled relations to the lines previously ruled. Each ruling-apparatus may be of the type described in Specification 108,925, [Class 100 (ii), Printing processes &c.], and comprises pens or other ruling-devices and sheetcontrolling gates both controlled by cams on a shaft to control respectively the lines ruled and the time of advance of the sheets. The sheets are fed through the first apparatus A on endless cloths 30, Figs. 2 and 10, and thence on to adjustable parallel endless strings 34 of a transferring-mechanism and beneath pressure rolls 128 with yielding tyres, the strings 34 moving more quickly than the cloth 30 and the advance of the sheets being stopped by a gauge 84 with perforations through which the strings 34 pass. The sheets are then moved off the strings 34 at an angle, preferably a right angle, to their previous motion by transferring devices 50 on arms on a rotating shaft 54 and pass under rubber-tyred pressure rolls 186 on to upwardly-extending endless tapes 142 feeding the sheets to the endless cloths 150 of the second ruling-apparatus B having its frame at right-angles to that of apparatus A. Feed-rolls in the apparatus A are driven by a motor or other power source and are geared through change-speed gearing to the cam-shaft of apparatus A controlling its gates and pens. This cam-shaft is geared through equal ratio constantspeed gearing 60, 58, 56 to the shaft 54 which is geared through similar gearing 162 to the camshaft of apparatus B. The feed-rolls of apparatus A are geared through change-speed gearing 174 to those 148 of apparatus B and through fixed gearing 164, 180, 182 to the rolls 36, 32 of the strings 34 and cloths 30. The roll 140 of the tapes 142 is geared through constant-speed gearing from the roll 148. The transferring devices 50 and the cam-shafts of both apparatus controlling their gates and pens are thus driven in unalterable synchronism so that the lines ruled are always definitely controlled by setting the cams. To adjust for varying lengths of sheets in the direction of the lines ruled in apparatus A, the change-speed gearing between the cam-shaft and the motor-driven feed-rolls of apparatus A is varied to vary the rate of action of 'the pens and gates; whilst to adjust for varying breadths of sheet in the direction of the lines ruled in apparatus B, the gearing 174 is varied to vary the rate at which the sheets are advanced through apparatus B. The gauge 84 is adjusted in the direction of advance of the sheets from apparatus A, both ends of the gauge being simultaneously moved by gearing 96 and a handle 100 and its position indicated by a scale 302 graduated according to sheet dimensions. The transferring devices 50 are angularly adjusted on the shaft 50 to contact with the sheets as they strike the gauge 84. Rebound of the sheets from the gauge 84 is prevented by pairs of conical rollers 104, 106, Figs. 2 and 6, with cylindrical peripheries 114, 120 engaging opposite faces of the sheets when the gauge 84 arrests the sheets. The rollers 104, 106 are rotatable about spindles 112, 118 extending towards the apparatus A, the upper rollers 106 being loosely mounted on their spindles to permit their yielding upwardly to receive the sheets. Each transferring device 50 comprises an arcuate sheet-engaging shoe 74, Fig. 7, of rubber &c. on a member 66 radially slidable in guides adjustably mounted on and rotating with the shaft 54, the shoe 74 being urged away from the shaft by a spring 82 and a set-screw 76 provided for adjustment of the normal distance of the shoe from the shaft 54 and the pressure of the shoe on the sheets according to the thickness of the sheets. Parallel endless strings 48, Figs. 2 and 10, bridge the space between the conveyer 30 and the strings 34, the strings 48 resting on the conveyer 30 and passing around a roll 46 between the strings 34. The sheets are overlapped as they are fed along the strings 34 against the gauge 84, the strings 34 passing around rolls 124, 126. The sheets are also overlapped as they pass up the tapes 142 by rolls 194, Fig. 2, projecting between and above the tapes 142, the rolls being rotated by a chain 184 so that their peripheral velocity is greater than that of the tapes and being adjustable along the tapes 142 by chains 204 and a handle 210. For simple cross-ruling by apparatus B, the rolls 194 are rendered inoperative by moving the tapes by a fork into engagement with, and over the edges of, the rolls. The upper feeding cloths of the apparatus A and B are initially adjusted by handles 222, Fig. 9, applied to the shafts of the feed-rolls, spring-released clutches comprising a pin 230 on the handle engaging one or more depressions 228 in the shaft being provided to prevent rotation of the handles during operation of the machine. The sheets are laterally registered as they pass up the tapes 142 by twists in the tapes urging the sheets against an adjustable side-gauge 218.