Section 408.12431. Single stroke.

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(1) Presses using full-revolution clutches shall incorporate a single- stroke mechanism, except that the single-stroke   mechanism may be omitted if either of the following conditions is met:

(a)   A press has barrier guards as prescribed in R 408.12462(1), (2), and (3) on all 4 sides and a second action is required to initiate the cycle after the machine has been energized by the start switch.

(b)   A press is operated by 2 hand anti-repeat trips.

(2) If the single-stroke mechanism is dependent upon spring action, the spring shall be of the compression type, operating on a   rod or guided within a hole or tube, and designed to prevent interleaving of the spring coils in event of breakage.

History: 1979 AC.

                    
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