Drinking Fountains

Photograph of a Simon Benson drinking fountain built in downtown Portland, Oregon in 1912. Simon Benson commissioned Albert E. Doyle, and architect in Portland, to build 20 "bubbling" fountains for the city. (GIF, 488x605, 173 KB)
Nellie Robinson's fountains located near Portland's Civic Auditorium. Only two of these drinking fountains exist. One still runs a continuous fountain, but the other (pictured here) operates by a unique handle. Can you tell how to turn the fountain on? (GIF, 459x730, 224 KB)