Intermittent motion is a sequence of motions and dwells. A dwell is a period in which
the output link remains stationary while the input link continues to move. There are many
applications in machinery which require intermittent motion. The earn-follower variation
on the fourbar linkage as shown in Figure 2-lOc (p. 41) is often used in these situations.
The design of that device for both intermittent and continuous output will be addressed
in detail in Chapter 8. Other pure linkage dwell mechanisms are discussed in
the next chapter.