Abstract: The invention relates to a safety device for gates of lifts and elevators comprising a release device (4) which, when a door of the lift gate is closing and meets an obstruction, causing an excessive resistance to the movement thereof according to a prefixed resistance threshold value, releases the coasters (6) bearing the door from means for moving thereof such as to cause said coasters (6), and in consequence said door, to stop, while said means for moving said door remains activated. The release device (4) is a completely mechanical safety device.

Abstract: The device disclosed serves to control the opening and shutting movement of sliding elevator doors, and is designed to lock the compartment door (3) and the landing door (5) together when positioned face to face, in such a way that both doors open and shut as one. Such a device comprises a projecting catch fitted to the landing door (5), and a mechanism carried by the compartment door (3), which engages the catch and grips it between the upright surfaces of a pair of jaws (9, 10) that can be drawn together and spread apart within a horizontal plane, as well as being traversed horizontally at right angles to the landing door toward and away from the catch.