PROCEDIMENTO E DISPOSITIVO PER IL TRATTAMENTO DI OGGETTI MEDIANTE CORRENTI GASSOSE IN PARTICOLARE PER LA TEMPRA E LA FORMATURA DI LASTRE DI VETRO CON COMANDO INDIVIDUALE DEGLI UGELLI DI SOFFIAGGIO

摘要

1522708 Tempering glass sheets SAINT-GOBAIN INDUSTRIES 17 Nov 1975 [18 Nov 1974] 47274/74 Heading C1M [Also in Division B8] Glass sheets are tempered by air from nozzles 37 controlled by fluid logic switches involving further nozzles 36 which emit air so as to sense the presence or absence of a sheet. In view of the spacing between the nozzles 36, 37 in the direction of motion of the sheets, only the central area of the sheet is tempered. Thus a second bank of nozzles, with the nozzles 36, 37 reversed, is positioned downstream of the first bank.