The attachments usually furnished without extra charge are a large faceplate of the full swing of the lathe, a center rest, and a follower rest. The small faceplate is used only for driving the work indirectly through suitable attachments.


The large faceplate shown in Figs. 95 and 100 is often used as a direct support for the work, the T-slots and other openings being used for bolting and clamping the work firmly to the faceplate.

Faceplate 126Fig. 100. Heavy Faceplate

Fig. 100. Heavy Faceplate.

Center Rest When Work Is Being Done On The End Of A Shaft So That The Tailstock Cannot Be Used, It Is Necessary To Support The Shaft In Some Other Way

This is done by means of the center rest, shown in Fig. 101. This consists of a frame hinged at A, and fitted with three movable jaws BBB. The rest is clamped to the lathe-bed in the proper place. The jaws BBB are then adjusted to form a bearing for the work, care being taken that the axis of the work coincides with the axis of the lathe. Unless it coincides, the work will not be turned true; that is, the end will not be square, but will be hollowed or conical, as shown somewhat exaggerated in Fig. 102. The center rest is also used to support or steady long shafts that are being turned.

Fig. 101. Typical Center Rest

Fig. 101. Typical Center Rest.

After adjusting the center rest to size, it can be moved along the bed of the lathe without changing its relation to the lathe axis; but care must be taken not to reverse the center rest in the lathe, as, in most cases, such action would necessitate a readjustment.

Faceplate 129Fig. 102. Diagrams Showing Effects When Work is Not Held True in Cutting

Fig. 102. Diagrams Showing Effects When Work is Not Held True in Cutting.

Faceplate 131Fig. 103. Combination Chuck

Fig. 103. Combination Chuck.

The names back rest and steady rest are synonymous with center rest, the use of the device often determining the name.

Follower Rest

The follower rest serves some of the purposes of the center rest, but is fastened to the carriage, and moves with it at the point of greatest stress. It may consist of adjustable jaws or a solid ring to slip over the piece being turned. It is especially valuable in turning shafting and other work where the ratio of length to diameter is very great.