Society of Glass Technology · [Sheffield] · leaf 536
sa ¥ it w i 21- Fig. 97. … spring, 17, by a cam, 16, having several contours, a, b, c, and splinedon a rotating shaft, 8. The cam, 16, rotates in a fork, 18, bymoving which a different cam-contour is brought into action, andso the valve timing is altered. The fork, 18, is held by a spring-pin,21. An exhaust port, 30, may be…
Glass
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