(1) _The DOALL machine._ This machine (fig. 23) is used for contour metal sawing, filing, and polishing. It is a highly adaptable machine tool for jig work and for making dies. It does the work of a shaper or milling machine and replaces such operations as nibbling, drilling holes to make a cut, and torch cutting. Twenty assorted saws, 3/32 to 1/2 inches wide; three flat filebands, 1/4-inch, 3/8-inch, and 1/2-inch; and three file guides are standard equipment. The machine is equipped with a 3/4-hp, 208-volt, 3-phase, 60-cycle motor.
(2) _Toolroom lathe._ The 10-inch toolroom lathe (fig. 24) has a 4-1/2-foot bed and 1-inch collet capacity. It is driven by an underneath, 3/4-hp, 3-phase, 60-cycle motor. It is equipped with collet, milling and keyway-cutting, and telescopic-taper attachments, boring and turning cutters, fine and coarse diamond knurls, tool holders, and a large and small face plate.
(_a_) This 20-by 40-inch gap lathe has a 14-foot bed and a special, large face plate. With the gap closed, it is used as a regular engine lathe. (See fig. 25.)
(_b_) The tools and accessories for the lathe include telescoping taper attachment, boring and cutting bars, end caps, bits, chucks, and centers. Also, there is a set of metric thread-cutting gears for use where the metric system is standard. The lathe is driven by a 7-1/2 hp, 3-phase, 60-cycle motor.
(4) _Engine lathe._ The 16-by 54-inch engine lathe (fig. 26) also can be equipped with special threads including metric, by using special gearing in the endworks. It is driven by a 3-phase, 60-cycle, 208-volt motor and is equipped with telescoping taper attachments, boring bars, cutters, bits, chucks, tool holders, and metric thread-cutting gears.
[Illustration: _Figure 17. Windlass for handling bow anchors._]
(_a_) This 24-inch universal shaper is used for facing surfaces, notching, keyseating, and the production of flat surfaces on small parts. (See fig. 27.)
(_b_) The shaper is equipped with bits, holders, table, vise, and wrench set, and is driven by a 208-volt, 3-phase, 60-cycle motor.
(_a_) The radial drill has a 4-foot arm, 11-inch column, and 12 spindle speeds. (See fig. 28.) It has a range of 15 to 1,200 rpm and is driven by a 5-hp, 208-volt, 3-phase motor.