Sheave pulley out of several pieces. The two main "halves" of the pulley can be moved closer together or farther apart, thus altering the operational diameter. The usual construction is some sort of locking collar or set screws to secure the components, one half with a threaded central shaft and one half with a threaded center. By rotating the components one can "screw" the parts closer together or further apart, thus changing the distance between the two halves and allowing the belt to ride higher or lower in the groove. The adjustments are constrained to a specific range of size and
What a Terrible World, What a Beautiful World What a Terrible World, What a Beautiful World What a Terrible World, What a Beautiful World is the seventh studio album from The Decemberists, released on January 20, 2015. The album's title comes from a line in the song "12/17/12", a reference to the date of Barack Obama's speech in response to the Sandy Hook Elementary School shooting and lead singer Colin Meloy's conflicting feelings about the shooting and his happy personal life. "What a Terrible World, What a Beautiful World" received mostly positive reviews. It currently has a metascore of 77 and user score of 8.1 from Metacritic. "The