GB701689A - Paper board forming machine - Google Patents

Abstract

701,689. Cylinder paper-making machines. DOMINION ENGINEERING WORKS, Ltd. June 27, 1950 [Dec. 24, 1949], No. 16055/50. Class 96 In a cylinder paper - making machine, the cylinder mould 6, which may have a single- or a multicompartment suction box 37, 38, Fig. 4, has non - radial drainage openings 25, Fig. 7, spaced away from the forming - surface which may be supported by a helical wire 107 soldered at intervals in grooves 106 of ribs 26 and by a coarse-mesh underwire. The pulp inlet 90, Fig. 4, narrows to a throat 94 adjacent a vertically and angularly adjustable flowcontroller or baffle 17, flow also being controlled by a gate 20 adjacent an apron 19 with pondplates 19a at its ends. The cylinder mould may be supported by bands 7 and bearers 8 supported from a vat 5a, and may be kept clean by sprays 31 (which may oscillate) 31a (adjustably directed beneath the apron 19) and 70 (extending along the suction box 38) draining into the vat-circle 5 and through a pipe 33 &c., while water collection chambers at the ends of the vat &c., may also be drained at 33. Suction is applied to the compartments 37, 38 through flexible hoses to allow for rotary adjustment of the suction box which may be on wheels for endwise insertion into the cylinder mould 6. The couch roll 29 is mounted on pivoted arms (not shown) and bears on a pick-up felt 28.