molly-guard - meaning and definition. What is molly-guard
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What (who) is molly-guard - definition

SAFETY MECHANISM TO QUICKLY SHUT DOWN A SYSTEM IN AN EMERGENCY, WHEN IT CANNOT BE SHUT DOWN IN THE USUAL MANNER
Big Red Switch Time; Emergency shut-off; Big red button; Emergency stop; Panic stop; Big Red Switch; Killswitch; Molly guard; Molly-guard; E-Stops; Big red switch; Big Red Button; Emergency power off; Emergency power-off; Emergency Power-Off; Kill-switch; E-stop; Emergency fuel cut off switch; Remote kill-switch; Remote kill switch; Backdoor off-switch; Backdoor off switch; Backdoor kill switch; Backdoor kill-switch; Remote off switch; Remote off-switch
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  • An emergency stop button with a custom-made plastic molly guard to prevent it from being pressed accidentally

molly-guard         
/mol'ee-gard/ [University of Illinois] A shield to prevent tripping of some Big Red Switch by clumsy or ignorant hands. Originally used of the plexiglass covers improvised for the BRS on an IBM 4341 after a programmer's toddler daughter (named Molly) frobbed it twice in one day. Later generalised to covers over stop/reset switches on disk drives and networking equipment. [Jargon File]
Molly, Lady Huggins         
BRITISH ACTIVIST AND PHILANTHROPIST
Molly Green; Molly Huggins; Lady Molly Huggins
Molly, Lady Huggins, née Green (1907 – 11 September 1981) was a British activist and philanthropist.'Lady Huggins', The Times, 16 September 1981, p.
Guard (computer science)         
BOOLEAN EXPRESSION EVALUATED TO DETERMINE IF A BRANCH OF A COMPUTER PROGRAM SHOULD CONTINUE TO BE EXECUTED
Guard statement; Pattern guard; Guard statements; Guard (computing); Guard clause; Guard pattern
In computer programming, a guard is a boolean expression that must evaluate to true if the program execution is to continue in the branch in question.

Wikipedia

Kill switch

A kill switch, also known as an emergency brake, emergency stop (E-stop), emergency off (EMO) and as an emergency power off (EPO), is a safety mechanism used to shut off machinery in an emergency, when it cannot be shut down in the usual manner. Unlike a normal shut-down switch or shut-down procedure, which shuts down all systems in order and turns off the machine without damage, a kill switch is designed and configured to abort the operation as quickly as possible (even if it damages the equipment) and to be operated simply and quickly (so that even a panicked operator with impaired executive functions or a bystander can activate it). Kill switches are usually designed to be noticeable, even to an untrained operator or a bystander.

Some kill switches feature a removable, protective barrier against accidental activation (e.g. a plastic cover that must be lifted or glass that must be broken), known as a mollyguard. Kill switches are features of mechanisms whose normal operation or foreseeable misuse might cause injury or death; industrial designers include kill switches because damage to or the destruction of the machinery is less important than preventing workplace injuries and deaths.

A similar system, usually called a dead man's switch, is a device intended to stop a machine (or activate one) if the human operator becomes incapacitated or leaves the machine unattended, and is a form of fail-safe. They are commonly used in industrial applications (e.g., locomotives, tower cranes, freight elevators) and consumer applications (e.g., lawn mowers, tractors, personal watercraft, outboard motors, snow blowers, motorcycles and snowmobiles). The switch in these cases is held by the user, and turns off the machine if they let go. Some riding lawnmowers have a kill switch in the seat which stops the engine and blade if the operator's weight is no longer on the seat.