A pulley is a wheel on an axle or shaft that is designed to support movement and change of direction of a taut cable or belt along its circumference. Pulleys are used in a variety of ways to lift loads, apply forces, and to transmit power. In nautical contexts, the assembly of wheel, axle, and supporting shell is referred to as a "block."
A pulley may also be called a sheave or drum and may have a groove between two flanges around its circumference. The drive element of a pulley system can be a rope, cable, belt, or chain that runs over the pulley inside the groove.
Hero of Alexandria identified the pulley as one of six simple machines used to lift weights. Pulleys are assembled to form a block and tackle in order to provide mechanical advantage to apply large forces. Pulleys are also assembled as part of belt and chain drives in order to transmit power from one rotating shaft to another.
A set of pulleys assembled so that they rotate independently on the same axle form a block. Two blocks with a rope attached to one of the blocks and threaded through the two sets of pulleys form a block and tackle.
Pulley is a Californian punk rock band formed in 1994. The band is known for straightforward, hard-edged melodic punk rock.
The band was formed upon vocalist Scott Radinsky's departure from Ten Foot Pole, brought about by that band's desire for a singer with a full-time focus on music (Radinsky was also a major-league relief pitcher and has played for the Los Angeles Dodgers, among others). Pulley's initial lineup included Strung Out drummer Jordan Burns, guitarist Jim Cherry ( former bassist of Strung Out and, later, Zero Down), guitarist Mike Harder, and former Face to Face bassist Matt Riddle. Pulley's debut album, Esteem Driven Engine, was released in 1996 by Epitaph Records. Riddle later joined No Use for a Name full-time and was replaced by Tyler Rebbe. Follow-ups included 60 Cycle Hum (1997), @ !* (1999), Together Again for the First Time (2001), and Matters (2004). On July 30, 2008, Pulley announced a follow up EP to Matters, entitled Time-Insensitive Material which was released on March 24, 2009 on the band's own label, X-Members.
A pulley is a mechanical device used to transfer mechanical energy.
Pulley may also refer to:
a different pain when the axe falls on you
watching hurt from far away.
can only make us blue.
my life is only mine
and no one really cares if every day,
i hit that peel and stumble down the stairs.
you don't know you don't know the pain.
you can't feel the same.
many things i want,
that i will never get.
go through my life without even a little regret.
some things i need will never come to me
even if i kneel and pray and squeeze my rosary.
you don't know the pain.
you can't feel the same.
in this life you're always on your own.
nobody really hears a cry of pain
that sounds like it's alone,