Patent GB-190318846-A (GB)
Title: Improvements in and relating to Means for Slitting, Distending and Discharging Sheet Metal in the Manufacture of Expanded Metallic Lathing.
Inventor: HOLL GUSTAV JOHN
Filed: 1903-09-01
Granted: 1903-11-26
Abstract: 18,846. Holl, G. J. Sept. 1. Making trellis and lattice work.-An automatic machine for slitting and then distending in opposite directions the slit portions of sheet metal which is afterwards expanded by the apparatus described in Specification No. 18,847, A.D. 1903, to form expanded metallic lathing, is shown in the Figures. Two sheets are operated upon simultaneously, being drawn off the table 1, Fig. 1, and between the feed-rolls 12, 13 by the spring- pressed grippers 14, Fig. 11, when the stops 4 at the end of the table 1 are lowered by means of the rods 9, the counterbalanced levers 8, and the cams 6. The sheets pass between the slitting-dies 19, the distending-dies 20, and the withdrawal rolls 21, to the delivery apparatus 22. The rolls 12, 13, and 21 are mounted in frames 17, 23 pivoted on crossshafts 18, 24 and connected together by links 26, 28 which are pivoted to the ends of two levers 29 fulcrumed at 30. Cams 33 on the cross-shaft 34 engage rollers 32 on the levers 29, and intermittently oscillate the frames 17, 23, so that, although the feed and withdrawal rolls continue to rotate, the work is stationary while the slitting and distending dies are operating. The shaft 34 is driven by bevel gearing from the main shaft 36, and drives the feed-rolls 12, 13, the cam shaft 18, and then, by bevel gearing, the rolls 21. The slitting- dies, the movable ones of which are connected by adjusting-sockets 41, Figs. 5 and 6, to cranks on the main shaft 36, consist of a number of plates separated by distance-pieces 42 having convex or bevelled edges to direct scale &c. from between the dies, each die and spacing-block being cut out to receive a locking-wedge 43. The lower dies project through an opening in the table 45, the opposite sides of this opening being connected by upper and lower gratings or series of stripper-bars 46, bevelled at the ends to correspond with the retaining-plates 47 of the tie-plates 48 which are separated by washers 50. The upper dies pass between the upper stripper-bars 46, and, after the work, which is passed between the upper and lower sots of bars 46, has been slit, the resilience of the bars 46 forces out the slit portions of the work from between the dies. The distending-dies 20 consist of alternate concave and convex edged plates 65, 66, Fig. 8, the upper and movable dies being mounted in levers 61 connected by links with the extensions 64 on the slitting-die housings 39. After leaving the rolls 21, the work is drawn along either of the tilting-tables 70, Fig. 4, of the delivery apparatus 22 by the feed and co-acting rolls 75, 77, Fig. 1. The tables 70 are counterbalanced and pivoted on shafts 73 carrying at their ends fixed and loose arms 79, 82, Fig. 13, to which are pivoted the dogs 78, 81. The arms 82 and dogs 81 are oscillated by rods 83 and cranks, and, when the work reaches the dogs 78, they are moved into the lines of motion of the dogs 81, and are oscillated therewith and the tables 70 tilted to throw the work on to endless bands 86. When the work is discharged, the tables 70 return to their original positions.