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 165
FIGURE 30. engine a complete revolution until mark D comesopposite the pointer, Fig. 31, and the engine will beon the true center. At this point the question may arise, why not simplyreverse the motion and back the wheel up until themark D is in line with the marker? The answer is, … figure 31. that while this would undoubtedly save considerablelabor, yet it would almost certainly result in an error,on account of the lost motion of the moving partswhich would permit of considerable movement of thewheel before any movement of the crosshead wouldtake place if the wheel was turned…
