44 



PATTERN MAKING 



not in use the slide rest may be removed from the lathe, and the 

 ordinary tool rest and rest socket substituted in its place for hand 

 turning. 



The speed at which a lathe should be run is always indicated 

 by the manufacturer, the countershaft usually running at a speed 

 of 500 to 550 revolutions per minute. 



A variety of chucks and face-plates, used for holding the 

 work, are always furnished with a lathe. Some of these are shown 



Pig. 87. 



in the engraving, the screw chuck being shown at a, Fig. 88; and 

 two of the iron face-plates are shown, OIK? on each end of the spindle. 

 But in addition to these face-plates, which really form the 

 base only for chucking the pattern, wooden chucks must be 

 used intermediate between the iron face-plate and the pattern. 

 These wooden face-plates are constructed in a variety of ways by 



different pattern makers; but for small patterns it is necessary to 



