Patent GB-349844-A (GB)
Title: Improvements in the feeding of glass sheets from the forming machine to the leers
IPC: C03B35/16
Filed: 1930-08-06
Abstract: 349,844. Annealing glass sheets. NAAMLOOZE VENNOOTSCHAP MIJ TOT BEHEER EN EXPLOITATIE VAN OCTROOIEN, 53, Zeekant, The Hague. Aug. 6, 1930, No. 23537. Convention date, Aug. 8, 1929. [Class 56.] In a method of feeding glass sheets from a forming machine to a plurality of leers arranged side by side along the line of feed of the sheets, the sheets are received by, and moved ahead on, a roller conveyer at the speed of sheet formation, and then moved ahead at a higher speed until they come in front of one or other of the leers. Glass sheets from the forming machine 10, Fig. 2, are received by rollers 11 of a section A driven at the speed of sheet formation by a shaft 14 and gears 15. The rollers of the following section are driven from another shaft 16 at a higher speed, those in front of the leers 12<1>, 12<11>, 12<111> being driven through intermediate shafts 20 and gears 21 adapted to be disconnected for allowing the sheets to be stopped in front of the leers. The first sheet is fed to the third leer 12<111> and the second and third sheets to the second and first leers. In a modified form of conveyer, Figs. 4 and 6, the rollers of the first section are driven at the speed of sheet formation by a shaft 14 and gears 15 which act on the rollers through a ratchet and pawl device forming a oneway clutch. Extending from the rolling machine 10 to a point beyond each leer are a number of higher speed drives. The rollers of section B carry sprocket wheels 22, those of sub-section B<1> being keyed to the roller shafts by a pawl and ratchet mechanism 23, 24, and those of sub-section B2 being rigidly mounted. Each shaft of sub-section B<1> also carries a loose rope sheave 25 at each side of the sprocket wheel. Extending over the rollers of section B is an endless driving element comprising a pair of ropes 27 and a chain 26 driving the sprocket wheels 22. The section b extending from the rolling mechanism to beyond the first leer carries a similar additional driving mechanism 221, 251. At the beginning of the rolling of a sheet the connection between the chain 26 and ropes 27 lies near the machine 10 and the sheet moves on section A at the speed of formation. When the sheet is cut off the motor 28 is started and the sheet is carried to the leer 12<11> at an increased speed, the end of the chain 26 moving with the rear end of the sheet. By reversing the motor the rollers of sub-section B<2> in front of the leer may be given an oscillating motion until the sheet is sufficiently stiff. A similar operation of the section b brings the second sheet in front of the leer 121. In another modified form, Figs. 7 and 9, the conveyer consists of a number of endless roller bands 35a, b, c. The journals of the rollers carry loose wheels 29 by which they are guided and supported on rails 30 and also fixed pinions 32, 33 with which racks 32a, 32b, 33a, 33b, can be placed in engagement. The bands are driven with half the speed of sheet formation, the peripheral speed of the rollers being then the speed of formation. By engaging the racks with the pinions 32, 33 the peripheral speed of the rollers may be increased, reduced to zero or the rollers may turn in the reverse direction.