. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . at the same time through steel plate. Ball-Bfarings for Drill-Presses.—Fig. 4 shows a ball-bearingused to overcome the friction of the collar of the spindle of a drill-press. It consists oftwo collars, one havinga flange fitting into arabbet turned on thecorner of the other, toprevent dirt from get-ting in from the out-side, bdt h the collars be-ing provided withahalf-rouiul groove turned ontheir face, in
. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . at the same time through steel plate. Ball-Bfarings for Drill-Presses.—Fig. 4 shows a ball-bearingused to overcome the friction of the collar of the spindle of a drill-press. It consists oftwo collars, one havinga flange fitting into arabbet turned on thecorner of the other, toprevent dirt from get-ting in from the out-side, bdt h the collars be-ing provided withahalf-rouiul groove turned ontheir face, in which theballs revolve. The col-lars, as well as the balls,are made of fine steel.(See also ) Leeds Horizontal and Radial Drill—This machine (Fig. 5) isdesigned to work on or from a drill-press, and is di-iven direct fromthe drill-press s[.indle. It is a substitute for the hand-ratchet, andis useful in drilling the ends and diagonal parts of frames; it canalso be mounted on the work and (Iriveu by a sliding-shaft anduniversal joints. Drilling in all directions can be done, with thetwo taper-shanks and the horizontal and vertical movements, bv loosening thi.
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Keywords: ., bookcentury1800, bookdecade189, booksubjectmechanicalengineering
