CHAIN SAWThe chain saw (fig. 14- 17) is a heavy-duty pneumaticdevice, designed primarily for cutting trees or timbers upto 24 inches in diameter during clearing operations. Thechain saw is also used to accomplish heavy timberconstruction, such as bridges, bunkers, and culverts.NAIL DRIVERThe pneumatic nail driver (fig. 14-18) is alightweight member of the reciprocating percussionfamily of tools and used primarily for driving large nails,spikes, and driftpins in heavy timber construction.When the nail driver is equipped with the properattachment, it may also be used for other purposes, suchas riveting, shearing heads from bolts and rivets, andremoving scale and rust from metal plates or objects.DRILLThe pneumatic drill (fig. 14-19) is a heavy-dutylow-speed tool, designed to drive ship auger type ofdrills. The pneumatic drill is used extensively in trestlebridges and other timber construction work where it isnecessary to drill holes for bolts or pins.CIRCULAR SAWThe pneumatic circular saw (fig. 14-20) is built forheavy-duty use on timber construction work and maybeused for ripping as well as crosscut sawing. When thecircular saw is equipped with the appropriate abrasivedisk, designed for the specific material to be cut, it mayalso be used to cut brick, stone, concrete, tile, and similarmaterials.SAFETYSafety rules for pneumatic tools are as follows:. Keep your hands and fingers off the trigger orthrottle until you are ready to start the tool.. Always keep your balance.. Never get your face close to the tool.Figure 14-17.—Pneumatic chain saw.Figure 14-18.—Pneumatic nail driver.14-14
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