Two-speed power take-off

A two-speed power take-off assembly comprising, a first and a second drive gear rotating on a common axis and driven at a high and low speed respectively, clutch teeth defined by each of said gears, a clutch collar slidably mounted for reciprocating on said common axis defining cammed surfaces, mating clutch teeth defined by said clutch collar for selectively engaging the clutch teeth on said gears, a cammed shaft rotatably and slidably mounted on said common axis and defining first and second cammed surfaces, first and second sets of clutch shifting elements mounted between and engaging said cammed surfaces on said cammed shaft and said cammed surfaces on said clutch collar, resilient means biasing said cammed shaft in one direction, an output shaft selectively biasing said cammed shaft against the force of said resilient means to selected positions for selectively and alternatively clutching of said first and second gears, said cammed surface on said cammed shaft selectively biasing said first and second sets of clutch shifting elements radially to reciprocate and clutch said clutch collar in selective engagement with each of said gears.