CHAPTER XVI.

=SHAPING AND PLANING MACHINES.=

=General description= of a shaping machine 389 =Construction= of swivel head 389 Slide 390 Vice chuck 390 Feed motion 390 =Hand= shaping machine 392 =Quick Return Motion=, Whitworth's 392 =Vice Chucks=, the principles of construction of plain, for planing machine 392 The proper methods of chucking work in 393 Holding taper work in 394 Various forms of 394 Swiveling 395 Rapid motion 396 For vice work 396 =Centres= for shaping machines 397 =Traveling Head= in shaping machine 397 =Planer Shapers= or shaping machines, having a tappet motion for reversing the direction of motion 398, 399 =Quick Return Motion= shaping machines, link 399 The Whitworth 400 Comparisons of the link motion and Whitworth 401 =Simple Crank=, investigating the motion of 401 =Planing Machines=, or planer 402 The various motions of 402, 403 The table driving gear 404 Planing machine with double heads 404 Rotary planing machine 405