used as safeguarding devices on both full and part revolution power
presses. They are similar to restraints,
but pullbacks are designed to pull the operator's hands
away from the area of the closing dies (point of operation) during
each stroke of the power press.
Wrist bands, are secured
around both wrists of the operator, and the pullback is adjusted for the
particular operator and the particular die installed within the press.
When the press stroke begins the pullback device pulls the wrist bands
away from the die located within the press.
An overhead pullback device (above) is commonly used in press brakes that perform long-run jobs and when
to medium-size parts are being produced. It allows the operator freedom of
movement for loading and unloading parts without interference.