Twentieth century hand-book for steam engineers and electricians, with questions and answers .. (1905)
Swingle, C. F. [from old catalog], Horstmann, Henry Charles, 1858- [from old catalog], Tousley, Victor Hugo, 1875- [from old catalog] · Chicago, F. J. Drake & co. · leaf 167
urns, as in Fig, 32. Before connecting 154 ENGINEERING the valve rod the valve should be put in its centralposition and marked. To do this it will be necessaryto first ascertain the outside lap. The most accurate method of doing this is to take thevalve out and measure the distances between the… … FIGURE 33. divided by 2 = 1 in., which is the lap. The inside lap.should also be measured at this point for convenience,and the measurements preserved for future reference.The inside lap is ascertained by measuring the distancebetween the inside edges of the ports and the distanceacross the arch of…
