Liquid-projecting monitor

A liquid-projecting monitor comprising a housing, and a head for carrying a nozzle;

• the head having a frusto-spherical external surface and having a passage within the head for liquid flow to the nozzle;
• the housing defining together with the head a chamber from which liquid is led into said passage wiithin the head and thence to the nozzle;
• the head being borne for pivotal movement relative to the housing about a generally horizontal axis so as to provide adjustment of the angular elevation or depression of the head;
• the frusto-spherical surface of the head forming a sliding seal against the housing to maintain the aforesaid chamber liquid-tight throughout the permitted range of said pivotal movement;
• a hollow, generally vertical axle through which liquid is led into said chamber and by which the assembly of said head and housing is borne for pivotal movement as a whole about a generally vertical axis, said axle turning together with said assembly;
• and means defining an annular chamber surrounding said axle for the supply of liquid to the head, the axle having inlet apertures in its wall in communication with said annular chamber;
• and said axle being configured internally to define a circumferentially arrayed series of arcuately extending channels to lead separate streams of liquid smoothly from respective said inlet apertures to the upper portion of the axle.