What 29 CFR 1910.213 requires (plain English)
29 CFR 1910.213 sets detailed safety requirements for woodworking machinery: table saws, radial saws, band saws, jointers, planers, shapers, and similar equipment. Because these machines expose fast-moving blades and cutterheads and can throw a workpiece back at the operator, the standard prescribes specific guards for each machine type rather than relying on general guarding language alone.
For hand-fed circular ripsaws and crosscut saws, the standard requires a hood that completely encloses the portion of the blade above the table and self-adjusts to the thickness of the stock, plus a spreader (riving knife) to keep the kerf open behind the blade and anti-kickback fingers or dogs to stop the workpiece from being thrown back. Jointers must have the cutterhead guarded, and each machine must have a readily accessible on-off control.
1910.213 is the woodworking-specific member of the machine-guarding family, alongside the general standard (1910.212), the abrasive-wheel standard (1910.215), and power-transmission guarding (1910.219). It applies the same protect-against-contact-and-ejection principle in the detailed way that high-hazard woodworking equipment demands.