Locomotive boiler construction; a practical treatise for boilermakers, boiler users and inspectors .. . Figure 327Oil heater for rivets. 335 A radial Figure 328A radial drill. 336 A post or wall radial drill. the crank C. A circular rack on the part B allows thetable to be swiveled around in any position. The arm Acan be made to swivel through a complete circle. A pitis usually provided on one side of the machine, so thatoperations can be performed on long work. A much more simple style of radial drill is repre-

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Keywords: ., bookcentury1900, bookdecade1910, bookidlocomotivebo, bookyear1912