. American engineer and railroad journal . The line shaft for each of the group-drives in the machineshop is driven at a speed of 150 revolutions per minute. Theline shaft for the flue machinery is operated at 175 revolutionsper minute, while those in the blacksmith shop are drivenat higher speeds, from 200 to 450 revolutions per minute, asrequired. The countershaft speeds, of course, vary, being inall cases adapted to the machine driven. In the machine shop. (IIAIN riUIVE FOR A SAW IN THE TENDER DEIAUTMKNTBOILER SHOP. MORSE ROCKER-JOINT CHAIN. CHAIN nRI\E FOR .V B\NI),SA\V IN THE BOILER SHOP.
. American engineer and railroad journal . The line shaft for each of the group-drives in the machineshop is driven at a speed of 150 revolutions per minute. Theline shaft for the flue machinery is operated at 175 revolutionsper minute, while those in the blacksmith shop are drivenat higher speeds, from 200 to 450 revolutions per minute, asrequired. The countershaft speeds, of course, vary, being inall cases adapted to the machine driven. In the machine shop. (IIAIN riUIVE FOR A SAW IN THE TENDER DEIAUTMKNTBOILER SHOP. MORSE ROCKER-JOINT CHAIN. CHAIN nRI\E FOR .V B\NI),SA\V IN THE BOILER CHAIN. groups the speed reduction in the drive from the motor to theline shaft is about 6 to 1; In th» various other groups itvaries according to the machines driven. An important feature of the construction of the light toolsection of the machine shop, which was indicated in the draw-ing on page 369 of the December, 1902. issue, is the arrange-ment of the lower roof trusses with intermediate cross mem- 188 AMERICAN ENGINEER AND RAILROAD JOURNAL. bers to accommodate the countershafting supports. The lowertrusses are divided up into panels approximately 11 ft. square,so that all countershafting supports used in the machine shopare of the same length, irrespective of which direction theyrun; this greatly facilitated the getting out of the counter-
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
