Show 28 1 1 7 71 i 1 41 aft A it 8 4 T 7 8 A N put more footage in your steel with sullivan furnaces and sha sharpeners Sharp eners authorities of the american institute of mining and metallurgical engineers are agreed that 1 drill steel should be heated slowly and uniformly 2 care must be taken not to forge bits at too high a heat 3 tempering 0 should be done during 0 the critical range 0 of temperature on the rising heat sullivan furnaces and sharpeners Sharp eners rs insure that each steel bits are made to exact shape and guage by tool steel is of uniform hardness of exact shape that the steel dies and dollies they follow accurately in the quality you paid for is pre preserved sered and that you will obtain drill hole the maximum feet of hole from each steel with the sullivan gauging V t device tn genuine double taper THE SULLIVAN OIL OR GAS FURNACE heats the bits are quickly and correctly formed providing increased steel gradually evenly while electrical devices prevent drilling speed and indicate also if the steel overheating or burning the illustration is from the chief consolidated mining is not hot elou enough 0 h co eureka for working or utah where a sullivan tempering furnace and the hammer forg A arid abid B sharpen ing action of ers are in use t the h e SULLIVAN SHARPENER re sharpeners Sharp eners bulletin fines the grain of the metal and with furnaces bulletin each repeated 1 sharpening renders send fo for r ne new W steel it tougher uglier to less liable handbook and instructions to wear or 80 breakage pages free no maxx class A slin ivall sh sharpener arcener sullivan sharpened C G SULLIVAN MACHINERY COMPANY salt lake city weft second south street |