Twentieth century hand-book for steam engineers and electricians with questions and answers; a practical non-technical treatise .. (1913)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & company · leaf 488
Fig. 169 To alter the tension on the recoil spring of this reducingmotion, remove the nut E, and grasping the milled headC between the thumb and forefinger, pull it from the casefar enough to allow it to be turned. Then twist it to theright, if more tension is desired, and allow it to slide ontothe…
