Machine Safeguards

Fixed Enclosures -- Fixed enclosures are non-movable devices that are commonly used to prevent access to pulleys, gears, belts and other movable parts. Fixed enclosures can also be used at the point of processing if they are designed in such a way as to allow stock to be fed but not admitting hands or fingers.

Adjustable Enclosures -- Adjustable enclosures are commonly used at the point of processing (danger zone) and allow for various sizes of stock. Many of these enclosures have anti kick-back devices, chip removal accessories, or other built in safety features. Adjustable enclosures may allow hands to enter the danger zone, so operator compliance with safety rules is essential.

Enclosure with electric or mechanical interlock -- These enclosures shutoff or disengage the power when the guard is open. This type of enclosure is commonly used with computer-controlled machines and robots.

Automatic or semiautomatic feed -- Automatic feed systems reduce the machine hazard by eliminating the need for the operator to work in or near the danger zone. They do, however, bring other safety hazards which require careful attention.

Two-hand trips -- Two-hand mechanical or electrical control mechanisms which must be activated simultaneously, by both hands, prevent hands from being free to enter the danger zone.

Hand clearing devices -- Fixed bars, or straps which prevent hands from reaching the danger zone. Other types of devices move into position to clear hands from the danger zone immediately before impact or cutting.