it can be seen that an additional latch assembly 51b is preferably employed with the link 34e on the opposite side of the platform to provide additional support and rigidity in holding the railing assembly in its elevated position furthermore the additional latch assembly 51b maintains the railing assembly in the elevated position in the event that the latch assembly 51a is inadvertently moved so as to unlatch or unlock the latch assembly 51a while a person is working upon the platform in embodiments having an additional latch assembly 51b it should be appreciated that all of the latch assemblies are to be simultaneously actuated to a released condition of locking pin 62 in the foot or locking portion of the latch when it desired to lower the railing assembly one skilled in the art will also recognize that the railings on opposite sides of the platform could be raised independently and could be secured in elevated position by independent latch assemblies associated with each railing it should be appreciated that latch assembly of the present invention for locking the railing assembly in its elevated position can be embodied in a wide variety of forms to hold the links in upright or vertical position in one possible alternative arrangement the lever 58 may be attached to the brace 56 at a location other.