. Railway mechanical engineer . Fig. 2—View Siiowing Thermit Weids and Front Deck CastingReady to Be Applied close together, the top and bottom members of each set wererepaired by making only one weld, thus joining both framestogether as shown at the arrows in Fig. 2. The result wasnot only a saving in time, labor and material, but a strength- ening of the frames at the points welded. After the weldswere completed and the deck casting put in place, it wasonly necessary to ream out the holes and rebolt the welds were made by J. W. Boyd on April 6, 1920, andthe locomotive has since
. Railway mechanical engineer . Fig. 2—View Siiowing Thermit Weids and Front Deck CastingReady to Be Applied close together, the top and bottom members of each set wererepaired by making only one weld, thus joining both framestogether as shown at the arrows in Fig. 2. The result wasnot only a saving in time, labor and material, but a strength- ening of the frames at the points welded. After the weldswere completed and the deck casting put in place, it wasonly necessary to ream out the holes and rebolt the welds were made by J. W. Boyd on April 6, 1920, andthe locomotive has since been in constant service. TRIPLE VALVE GRINDING MACHINE The device illustrated was designed to eliminate the laborof grinding triple valve slide valves. As shown, the valveis arranged to be held on a stand on the air brake grinding compound is applied to the slide valve andit is then placed in position on the valve seat. An eccentricwith a crank arm and crank is driven bv means of a light. Triple Valve Grinding Machine belt from overhead .shafting. The crank arm is arranged tobe connected to the slide valve and when power is applied,the valve will be moved back and forward. When either the slide valve or its seat is badly worn, ex-perience has shown that a long time is required to grind outthe irregularities by hand. The slide valve grinding deviceillustrated has proved a labor-saver for this operation. CARBON AND HIGH SPEED STEEL* BY J. PURCELLWestern Pacific When designing or making a tool from carbon steel wemust first consider the proper kind of steel to use and thensec that the tool is designed so that it will harden properlywithout breaking. Too much cannot be said about the heating and forgingof steel, as the heating of steel to forge is one of the mostparticular of all the operations. The tool dresser must turnthe steel over in the forge or furnace to sec tliat it is heatsdevenly to a little above the hardening temperature, say aljout1,475 deg. to 1,.S00 dc
Size: 1842px × 1356px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
