Patent GB-199404-A (GB)
Title: Improvements in sheet delivery mechanism for cutting or other machines
IPC: D06H7/02
Filed: 1922-03-13
Abstract: 199,404. Spadone Machine Co., (Assignees of Wegner, J.). March 12, 1921, [Convention date]. Delivery apparatus. - Take - off mechanism for removing sections of fabric or other sheets from a cutting &c. machine comprises a carrying- device having an initial lineal movement and a subsequent pivotal movement, means for actuating the device positively and mechanically through the beginning of its pivotal movement, which pivotal movement is completed by gravity, and a spring for returning the carrying-device to its initial position. A receiver adjustable towards and away from the take-off device is preferably employed in combination therewith. The arrangement shown illustrates the application of the take-off device to a fabric-cutting machine of the kind described in Specification 6548/10, [Class 31 (i), Cutting and severing machines &c.], wherein the web a passes down alongside a slot 17 in an inclined raceway 15 and is cut by a knife 24 which is alternately projected into and withdrawn from a groove 18 in a clamping bar 19 by the reciprocation of the cutter-actuating member 23 along the guideway 22. The cut section a is seized along its upper edge by a series of suction nozzles 26 and pins 27 spaced along a pipe 25 disposed parallel with the raceway 15 and connected by tubes 28 to a tubular shaft 29 journaled in oscillating arms 31. The latter project from a shaft 32 having an arm 37 connected by a rod 38 to one arm 39 of a twoarmed lever pivoted at 40, the other arm 42 being connected by a rod 43 to a pivoted lever 44 carrying a roller 47 engaging a face cam 49. On downward movement of the arms 31, the tubular shaft 29 and the tubular frame 28, 25 are lowered vertically for a short distance, as shown in Fig. 4, until a lug 67 on the tubular shaft 29 strikes against a pivoted latch 64, the further movement of the arms 31 thereupon rotating the shaft 29 and commencing the downward swing of the tubular frame, which downward swing is completed by its momentum and gravity. A covering of wire netting 30 prevents the strip a sagging between the tubes 28 as the frame descends. Connection of the suction nozzles 26 with the vacuum pump 62 is now broken, so that the strip a is released and falls on the table 70. The tubular frame returns to its initial position under the influence of a spring 33. The table 70 is mounted for adjustment laterally towards the take-off frame, or at an angle, as shown in dotted lines in Fig. 7, and also for lowering it as the pile accumulates. The brackets 71 supporting the table 70 are mounted on arms 73 carried by tubular shafts 74 slidable along the tubular shafts 75, Fig. 9, by means of a hand-crank 94, arm 88 and connecting link 90, whereby the table may be adjusted laterally. The rods 77, Fig. 7, which carry the shafts 75, are mounted at their inner ends in collars 83, one pivotally connected with an upright 85 and the other with a fork 86 so positioned as to allow the table to be adjusted at an angle. The tubular shafts 75 are geared by means of worm-wheels 102, worms 101, and bevel gears 99, 98 with a shaft 95 fitted with a hand-wheel 97, so that the tubular shafts may be slowly rotated to lower the swing arms 73 supporting the table. A conveyer belt 103 may be associated with the latter.