The brakes shoes, which are
connected to two levers,
The spiral springs, which are
connected to the levers, and
The electromagnetic solenoid, which is connected to the two levers
When the electricity is flowing, the
electromagnetic solenoid uses magnetic force to pull the two levers in towards it,
which keeps the springs attached to the top of the levers open.
The open springs keeps the brake shoes, which are positioned on each shoes,
which are positioned on each side of a
shaft, away from the shaft while it is turning.
When the electricity stops flowing, the
electromagnetic solenoid stops working, with the magnetic force gone, the
spiral springs closes, which pushes the brakes shoes against the shaft to stop
it from tuning
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