molly-guard


a simple device for preventing the accidental useage of a device. (e.g. plastic covers over fire alarm switches so that they can’t be set off accidentally.)
the jargon file defines a molly-guard as:
” a shield to prevent tripping of some big red switch by clumsy or ignorant hands. originally used of the plexigl-ss covers improvised for the brs on an ibm 4341 after a programmer’s toddler daughter (named molly) frobbed it twice in one day. later generalized to covers over stop/reset switches on disk drives and networking equipment. in hardware catalogues, you’ll see the much less interesting description “guarded b-tton”.”
yeah, the janitor put molly-guards over all the fire alarm b-ttons in the sports hall, so now we can’t set them off by slamming them with a ball.
can still set them off if you lift the cover though…

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