Abstract: A training device for training the techniques of forcible entry through a locked door includes a door having an inner vertical edge, the door being hingedly mounted within a door frame for swinging movement between closed and open positions, the door frame including a hollow vertical jamb having a vertical surface adjacent the inner vertical edge of the door and an opening in the vertical surface communicating with the hollow. A pin projects from the door and is received within the opening in the jamb. When the door is in the closed position the pin is clamped by a pair of vertically opening and closing hinged jaws, the jaws being operable within the hollow between open and closed positions and being biased into the closed position by compression springs.

Abstract: An electromagnetic hammer having a ferromagnetic moving mass, the hammer comprising both a tube (1) designed to rest via an anvil on an element to be hammered (50), carrying a peripheral coil (2), and slidably receiving the mass (14) inside itself, and electrical power supply means connected to the coil (2) to excite it in such a manner as to generate an electromagnetic field for raising the mass, the mass striking the anvil under the action of its own weight when the coil is no longer excited, the coil (2) being made by being wound around the tube (1), and the tube being made of a non-magnetic material and having means (3, 4, 5, 6) for taking up axial forces and for transmitting said forces to the anvil (13) while the mass (14) is being raised. The power supply means comprise an flywheel associated with a rotary motor and with an alternator.