e stops with reference to the hole.
As the adjustment of the stop-rod changes the position of the taper
templet as well as the stops, it is evident that both the shoulders and
the taper are finished the same distance from the hole in each case. The
connection of the bracket (to which the templet arm is attached) with
the stop-rod is clearly shown in Fig. 33. This bracket can either be
locked to the ways or adjusted to slide when the stop-rod is moved.

[Illustration: Fig. 35. First and Second Operations on Automobile
Transmission Shaft--Lo-swing Lathe]

The part illustrated in Fig. 35 is an automobile transmission shaft. In
this particular case, cylindrical, tapering and spherical surfaces are
turned. The upper view shows, diagrammatically, the arrangement of the
tools and work for the first operation. After the shaft is "spotted" at
_A_ for the steadyrest, the straight part _C_ and the collar _B_ are
sized with tools _S_ and _R_ which are mounted on the left-hand
carriage. A concave groove is then cut in collar _B_ by tool _R_, after
which spherical end _D_ is formed by a special attachment mounted on the
right-hand carriage. This attachment is the same, in principle, as the
regular taper-turning attachment, the substitution of a circular templet
_T_ for the straight kind used on taper work being the only practical
difference.

[Illustration: Fig. 36. Axle End turned in One Traverse of the Five
Tools shown]

After the surfaces mentioned have been finished on a number of pieces,
the work is reversed and the tools changed as shown by the lower view.
The first step in the second operation is to turn the body _E_ of the
shaft with the tool _T_ on the left-hand carriage. The taper _F_ and the
straight part _G_ are then finished, which completes the turning. It
will be noted that in setting up the machine for this second operation,
it is arranged for taper turning by simply replacing the circular
templet with the straight one shown. When this taper attachment is not
in use, the swiveling arm _M_, which is attached to a bracket, is swung
out of the way.

The method of driving this shaft is worthy of note. A dog having two
driving arms each of which bears against a pin _N_ that passes through a
hole in the spindle is used. As the ends of this pin, against which the
dog bears, are beveled in opposite directions, the pin turns in its hole
when the dog makes contact with it and automatically adjusts itself
against the two d