Importance

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Abstract

Disclosed is a braking system for a spool of coiled wire used in a welding machine. The braking system includes a spindle mounted to the machine to rotate freely. The spindle has a braking surface and it has mounted to it an annular brake member having teeth around its circumference and a braking surface which engages the braking surface on the spindle. The two braking surfaces frictionally coupled the spindle and brake member together so they rotate as a unit. The braking surfaces slide relative to each other through a predetermined rotational distance when the rotation of the brake member is stopped abruptly. A solenoid actuated pawl engages one of the teeth of the brake member to stop this member, allowing the spindle to rotate through a limited rotational distance of, for example, a maximium of about twenty degrees of rotation.

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First Claim