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guard pin
noun
, Horology.
- (in a lever escapement) a pin on the lever, meeting the safety roller in such a way as to prevent the lever from overbanking.
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Word History and Origins
Origin of guard pin1
First recorded in 1875–80
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Example Sentences
Be sure the guard pin does not interfere with the fork action in any way.
From Project Gutenberg
As a rule, all the guard pin needs is to be free and not touch the roller.
From Project Gutenberg
Several letters were delicately cut on its golden stem, and a guard pin showed how much its wearer valued it.
From Project Gutenberg
In reply we would offer the supposition that some workman had bent the guard pin forward or set a pallet stone too far out.
From Project Gutenberg
When drawing a fork and roller action it is safe to show the guard pin as if in actual contact with the roller.
From Project Gutenberg
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