Trolley bus head

A trolly bus head comprising a cradle swivel pivotally mounted at the end of a pole, a cradle mounted on the cradle swivel by means of a connection allowing oscillation about a substantially vertical axis and rocking about a substantially horizontal axis, said cradle receiving a replaceable wiper for transmitting current to a cable mounted on the pole via a shunt connected to the cradle, the head including the improvement whereby the cradle comprises a main body having a support and contact face for engaging a bottom portion of the replaceable wiper, and a moving portion which is latchable on said main body, said moving portion being hinged about an axis carried on said main body and having a longitudinal opening through which a top portion of the replaceable wiper passes, resiliently deformable means being provided for holding the replaceable wiper against the support and contact face when the moving portion is latched against the main body, wherein the moving portion of the cradle is hinged about a shaft mounted on the main body of said cradle, said shaft being mounted free to move transversely in a direction which is substantially perpendicular to the support and contact face, said moving portion including two rims in the vicinity of the longitudinal opening and coming into direct contact with top side edges of the replaceable wiper, and wherein said resiliently deformable means comprise a spring member acting on the hinge shaft in such a manner as to exert a force on the moving portion of the cradle suitable for maintaining the replaceable wiper against the support and contact face, the resiliently deformable means include a latching clip mounted on the other end of the moving portion of the cradle.