THE YOUNG FAEMER'S MANUAL. 401 



AUGERS AND BITS. 



" An auger once to boring went, 

 And bored until the shank was bent ; 

 The screw encountered a tough knot, 

 And stopped the boring on the spot. 

 The pod untwisted, and the lips 

 Refused to cut and heave out chips." PUNCH. 



588. The principal parts of an auger or bit are, a the screw, b 

 the cutters, or lips, c the pod, or twist, and d the shank. Pointed 

 projections on the under side of the lips of some kinds of augers 

 and bits are called spurs. 



589. It will be seen by these figures that the lips are circular, 

 and not square, as most augers are. This is a patentable feature 

 in the manufacture of augers and bits, and Mr. Ransom Cooke, 

 Saratoga Springs, N. Y., the patentee, informed me that he "re 

 ceives four hundred dollars per month for his claim, during the life 

 of the patent, from Messrs. Lamson, Goodnow & Co., Shelburne 

 Falls, Mass., who are the sole proprietors for manufacturing this 

 kind of augers and bits. I know them to be far superior to any 

 other auger that was ever made. They bore with the greatest 

 possible ease at any angle of the grain of the wood, without crush 

 ing or breaking and tearing out the wood which adjoins the hole 

 bored. These augers now stand without a successful rival in the 

 world, and can be obtained of any size of the manufacturers, at 

 79 Beekman street, N. Y. city. 



590. Fig. 166 represents a small bit, with a single lip and a 

 single twist ; and for boring any kind of wood it is infinitely su 

 perior to a centre-bit. (See PATENT EXTENSION BIT, Fig. 123.) 



SHARPENING AUGERS AND BITS 



591. Is usually done with a file, while the pod is held in the 

 vise. The lips should be filed at as acute an angle as will be 

 consistent with strength on the upper side, and on the under side 

 they should be filed as flat as possible and have the cutting edge 

 a little more prominent than it is lack of the edge. This style of 

 augers and bits should be filed with a very fine round file. When 

 augers have spurs, the spurs should never be filed on the outside. 



