| 摘要 |
Infra-red detector means (11, 12, 13, 14, 15, 16, 36) is used to provide a signal corresponding either to the presence or absence of hot glass at a selected position or positions in the machine. The signal is examined at a selected time in the cyclic process of the machine to ascertain whether the signal corresponds to the expected condition of the infra-red detector means (11, 12, 13, 14, 15, 16, 36) at the selected time, and emergency action is initiated in the event that the signal does not correspond to the expected condition of the infra-red detector means (11, 12, 13, 14, 15, 16, 36). The method may be used to ascertain whether the correct number of parisons has been removed from a blank station of the machine, to detect whether parisons formed at the blank station have a length exceeding a predetermined length, or to detect whether the correct number of articles of glassware have been removed from a shaping station of the machine at which the parisons formed at the blank station (A) are shaped. |
