. The Street railway journal . FIG. 6.—SIDE ELEVATION OF TRUCK. men from the necessity of carrying wrenches with themin their work. The drill is driven by a crank, and is soarranged that when the hole is finished, the crankshaftis engaged with the vertical feed, throwing up the drillinstantly so that it can be readily set for the next a test, holes have been drilled by hand in 21 seconds,and the instruments can be easily set and holes drilled in40 seconds. All keys which hold the machine in positionunder the slot rail are fitted with lugs, so that when theyare loosened they cannot fall
. The Street railway journal . FIG. 6.—SIDE ELEVATION OF TRUCK. men from the necessity of carrying wrenches with themin their work. The drill is driven by a crank, and is soarranged that when the hole is finished, the crankshaftis engaged with the vertical feed, throwing up the drillinstantly so that it can be readily set for the next a test, holes have been drilled by hand in 21 seconds,and the instruments can be easily set and holes drilled in40 seconds. All keys which hold the machine in positionunder the slot rail are fitted with lugs, so that when theyare loosened they cannot fall out into the conduit. Thisprevents a delay of work through possible carelessness onthe part of the workmen. After the drilling has been completed, the next under-taking is that of riveting the drip rail to the slot rail. As thiswork also has to be done from above the slot rail, a specialapparatus had to be devised for the purpose. The instru-ment employed is shown in Fig. 8. It consists of a blockof cast iron faced with steel and fitted to slip under theslot
Size: 3342px × 748px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
