Green’s Dictionary of Slang

ruffle v.

[ruffles n.1 ]

(UK Und.) to place in handcuffs.

[UK]Leaves from Diary of Celebrated Burglar 29/1: Joe expected that after ‘ruffling’ him they would march him to the station house.
[US]Nat. Police Gaz. (NY) 14 Sept. n.p.: King was again ‘ruffled behind’ but twisted the ‘darbies’ to pieces as if they were made of straw.