Section 29.221. All installations

(a) Starting and stopping. Each machine tool shall be provided with a starting and stopping device such as belt shifter, clutch, switch, or the like, accessible to the operator, that effectively controls the machine tool. Machine tools that are part of a unit when the starting or stopping of one machine may interfere with others of the unit, are excepted from this requirement.

(b) Clutches and couplings. Clutches and couplings shall be of the safety type with nuts and bolts countersunk or protected by a flange.

(c) Openings. Openings in bed frames on planers and boring mills shall be covered with a sheet metal apron substantially fastened in place. All openings in planer housing up to seven feet shall be guarded.

(d) Platforms. Balconies or runways on machine tools shall be considered working platforms and so guarded.

(e) Hollow spindle lathes. Material being worked on hollow spindle lathes shall be guarded a full length back of chuck while revolving.

(f) Cams and counterweights. Cams shall be guarded. Counterweights that present a shearing or crushing hazard when exposed to hazardous contact, shall be guarded.

(g) Chip guards. Chip guards shall be provided at machine tools when there is an eye hazard from flying chips or cuttings.

(h) Setting stops. The practice of changing stops (dogs) is prohibited while the planer table is in motion.

(i) Machine tools. Oiling of moving parts of the machine tools is prohibited. Cleaning of machine tools while in motion is prohibited. Riding upon the machine tool table is prohibited.

(j) Hazards. Belts, gears, sprockets, pulleys, chains, friction drives, revolving couplings, and clutches, when exposed in hazardous contact within 6 feet of the floor or working platform, shall be encased. Spokes presenting a shearing hazard shall be guarded.