Illustrated catalogue and general description of improved machine tools for working metal (1899)
Sellers, William, & co. [from old catalog] · Philadephia, Levytype company · leaf 35
n parted spur wheels for electric streetcars. The half wheel is set in a jig, centered by pin shown in work table and byturning half way round, a second half is brought under the drills, while the finishedpiece is replaced with another blank. This is an example of a special tool oflimited… … NINE-SPINDLE BOILER-SHELL DRILLING MACHINE. For drilling transverse seams in cylindrical boilers from 3 ft. to 7 ft. indiameter. Spindles arranged in groups of three on brackets carried upon massivecolumns. Adjustment for rivet pitches made by swivelling spindles and adjust-ing them along the…
Machine-tools · Machinery
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