Locking device for gearshift

A locking device kit for a gearshift lever of a large truck, the gearshift lever extending vertically upwardly through an opening in a floorboard in a forward cabin of the truck, the locking device kit comprising a sleeve adapted to surround and firmly engage a lower portion only of the gearshift lever in a position above the floorboard of the truck, means for locking the sleeve against the gearshift lever, the sleeve being provided with a vertical bore, a vertical locking rod being slidably mounted in the vertical bore, the locking rod having an upper end attached to a horizontal plate which is movable with the rod, the locking rod having a lower end adapted to project below the floorboard when the rod is in its lowermost position, a horizontal locking plate adapted to be attached to the floorboard along an underside thereof and having a portion extending into the opening in the floorboard surrounding the gearshift lever, the locking plate having a locking hole therethrough for receiving the lower end of the locking rod when the latter is in its lowermost position, the orientation of the sleeve, locking plate and locking rod being such that the locking rod engages the locking hole when the gearshift lever is in a "neutral" position for locking the gearshift lever in this position, a rotatable lock mounted in the sleeve and having a rotatable shaft, the locking rod being provided with a notch intermediate the ends thereof, the lock shaft being provided with a semi-circular extension which is adapted to be received in the notch when the rod is in its lowermost position.