The right-armer had to wait until the final hour to pick up his first two wickets on Wednesday evening but wrapped up the Kent tail during the morning session to finish with four for 57.
Lancashire were 22 for one in reply to Kent's 244.
Elsewhere, Hampshire opener Jimmy Adams still remained unbeaten on 205.
The 32-year-old has defied Worcestershire's bowlers for all four sessions so far to help Hampshire to 473 for eight.
Leaders Northamptonshire are in the driving seat against Gloucestershire, who were dismissed for 192 in their first innings, with Alex Wakely's unbeaten 80 helping them to a 34-run first-innings lead with six wickets still in hand.