dead man's handle
Operator vigilance device
A dead man's handle is a safety mechanism that requires continuous pressure to operate—if the operator becomes incapacitated and releases it, the machine stops or shuts down.
Common on trains, industrial equipment, and some power tools: The locomotive's dead man's handle ensured the train would brake if the engineer collapsed.
Also called a dead man's switch.
Pivoting bar for lifting
- switchCircuit-breaking toggle device
- gripSecure manual hold
- actuatorDevice producing controlled motion
- buttonDisc through a hole
pedal · interlock · fail-safe · spring-loaded · pressure-sensitive · release · trigger · throttle
Automatic harm prevention mechanism
- precautionPreventive safety measure
- protectionGuarding against harm
- backupStored duplicate for recovery
- redundancyNeedless duplication
safeguard · interlock · prevention · accident · malfunction · incapacitation · override
Railway pulling machine
- trainRail vehicle or instruct
- engineerTechnical design professional
- cabVehicle for hire
- brakeDevice to slow motion
throttle · conductor · driver · derailment · runaway · track · signal · traction
Lifter or wader
- forkliftPowered pallet-hoisting vehicle
- machineryCollective mechanical equipment
- chainsawMotor-driven cutting tool
- lawnmowerMachine that trims grass
tractor · conveyor · press · grinder · construction
Active mental awareness
- attentionFocused mental awareness
- monitoringOngoing observation of something
- awarenessState of perceiving reality
- responsivenessReadiness to react
operator · consciousness · incapacitation · fatigue · drowsiness · impairment
lever
Pivoting bar for lifting
- switchCircuit-breaking toggle device
- gripSecure manual hold
- actuatorDevice producing controlled motion
button · pedal · interlock · fail-safe · spring-loaded · pressure-sensitive · release · trigger · throttle · controller
fail-safe
Automatic harm prevention mechanism
- precautionPreventive safety measure
- protectionGuarding against harm
- backupStored duplicate for recovery
redundancy · safeguard · interlock · prevention · accident · malfunction · incapacitation · override
locomotive
Railway pulling machine
brake · throttle · conductor · driver · derailment · runaway · track · signal · traction
crane
Lifter or wader
- forkliftPowered pallet-hoisting vehicle
- machineryCollective mechanical equipment
- chainsawMotor-driven cutting tool
lawnmower · tractor · conveyor · press · grinder · construction
alertness
Active mental awareness
- attentionFocused mental awareness
- monitoringOngoing observation of something
- awarenessState of perceiving reality
responsiveness · operator · consciousness · incapacitation · fatigue · drowsiness · impairment
dead man's handletoggle switch
Two-position electrical controller
cruise control · autopilot · push-button start · on-off switch · rocker switch
dead, death, deadly, deaden, deadened, deadening, deadness, deathly, die