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SILENT RATCHET MECHANISM

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Gear 5 rotates about fixed axis A and carries pawl 3 which turns about axis B and has pin b. Ring 2 is mounted with some friction on the hub of ratchet wheel 1 and has lugs a. When ratchet wheel 1 turns counterclockwise, a lug a engages pin b to lift pawl 3 thereby reducing the clicking noise made when a pawl slides over ratchet teeth. When ratchet wheel 1 turns clockwise, spring 4 holds pawl 3 in engagement with the teeth of wheel 1.
$2699$RG,4L$

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Documents: Gear mechanisms  [Streambook]
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