The Collaborative International Dictionary
To rig a purchase
Rig \Rig\, v. t. [imp. & p. p. Rigged; p. pr. & vb. n. Rigging.] [Norweg. rigga to bind, particularly, to wrap round, rig; cf. AS. wr[=i]han to cover.]
To furnish with apparatus or gear; to fit with tackling.
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To dress; to equip; to clothe, especially in an odd or fanciful manner; -- commonly followed by out.
Jack was rigged out in his gold and silver lace.
--L'Estrange.To rig a purchase, to adapt apparatus so as to get a purchase for moving a weight, as with a lever, tackle, capstan, etc.
To rig a ship (Naut.), to fit the shrouds, stays, braces, etc., to their respective masts and yards.