Abstract: An adjustable cartridge chambering mechanism for a lever action rifle. The cartridge chambering mechanism provides a lifting arm and the lifting arm provides an adjustment screw which adjustably speeds up the operation of the cartridge chambering mechanism by adjustably shortening the arc length of the required lever action.

Abstract: A transport vehicle protective shield is set forth formed of a transparent, multi-layered, bullet-proof paneling including a first panel orthogonally mounted to a second panel to enclose a passenger compartment of a transport vehicle, such as a bus. The second panel includes a displacement door hingedly mounted to a first door of the second panel to provide access for a coin receiving appliance traditionally positioned adjacent the passenger compartment in bus vehicles. The panels include ventilation apertures to cooperate with a ventilation duct work within the passenger compartment to provide comfort and convenience in its use.