. American engineer and railroad journal . DRILLING SPRING SADDLE. shows the method of drilling and tapping piston heads. Themachine used is made by The Foote-Burt Company, as is indi-cated by the ball bearing thrust bearings on the spindle. Jib Crane in Roundhouses.—In most modern engine house*there are one or more columns between the tracks, and the oneat the front of the engine should be utilized for a jib crane ofabout 2,000 pounds capacity. This will be found of great assist-ance in handling stacks, fronts, bells, air pumps, steam chest lids,etc. A differential chain block hung on a troll
. American engineer and railroad journal . DRILLING SPRING SADDLE. shows the method of drilling and tapping piston heads. Themachine used is made by The Foote-Burt Company, as is indi-cated by the ball bearing thrust bearings on the spindle. Jib Crane in Roundhouses.—In most modern engine house*there are one or more columns between the tracks, and the oneat the front of the engine should be utilized for a jib crane ofabout 2,000 pounds capacity. This will be found of great assist-ance in handling stacks, fronts, bells, air pumps, steam chest lids,etc. A differential chain block hung on a trolley will be found toanswer all requirements.— Wtn. Elmer, Ry. Club of Pittsburg. April, 1909. AMERICAN ENGINEER AND RAILROAD JOURNAL. 161. HEAVY MILLING MACHINE FOE CONNECTING AND SIDE RODS. EXTRA HEAVY ROD MILLING MACHINE. The 48-inch milling machine, shown in the illustrations, is ex-ceptionally powerful and was specially designed for milling lo-comotive connecting and side rods in pairs. It is driven by a65 motor with a two to one speed range. This furnishes allthe speeds necessary for milling rods, but motors of differ-ent speed ranges or greater power may be applied to suit otherconditions. This machine has removed 82 cubic inches of steelper minute, but with a larger motor than noted above. The machine measures 48 in. between the housings and themaximum distance from the center of the spindle to the table is36 in. The spindle is 8 in. in diameter, except for that part towhich the cutter mandrel is locked, which is enlarged to 12 diameter. There is a horizontal adjustment for locating thecutters and a central bearing for supporting the mandrel be-tween the cutters. The table is 40 in. wide on its working
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
