Fig. 12. Clamp and weld block mechanism. stopped, braces are dispensed and transported into place, clamped and welded, first the verticals and then the diagonals, with each sequence repeated until the preprogrammed length of beam is produced, cut-off, and the next beam started. Of these devices, 162 are limit switches, with the remainder being encoders, tachometers, photo-optical detectors and electrical pulse sensors. The limit switches are all alike. With regard to size, they are small enough to fit within the limited space available in a mechanism, such as the brace clamp and weld device. They provide no difficulty where protected within the particular mechanism with which they are associated, but where they are exposed and subject to accidental damage by technicians servicing the beam builder, they have been a source of beam builder malfunction. Although
RkJQdWJsaXNoZXIy MTU5NjU0Mg==