1544 and 1545, which is connected to the lever U, the upper arm of which is operated by the tappets or dogs X on the ram or sliding bar, and it is obvious that when U is vibrated sleeve M is operated in a corresponding direction, and the ring L also is moved endwise in a corresponding direction, actuating the band as before described, the direction of motion being governed, therefore, by the direction in which U is moved by the tappets or dogs.
"Modern Machine-Shop Practice, Volumes I and II"
Joshua Rose
For the rest, he filled gas tanks, changed and pumped up tires, tested batteries, oiled tappets.
"Half Portions"
Edna Ferber
This device was simplified in 1718 by Henry Beighton, who suspended from the bottom, a rod called the plug-tree, which actuated the valve by tappets.
"Steam, Its Generation and Use"
Babcock & Wilcox Co.