Evening Republican, Volume 20, Number 154, Rensselaer, Jasper County, 28 June 1916 — Diving Helmet for Everybody. [ARTICLE]

Diving Helmet for Everybody.

A new diving helmet which anyone can use is the cover design of the May Popular Science Monthly. This diving helmet is of metal. Its lower edge fits snugly over the shoulders. Four adjustable weights, two in front and two in back, are fastened in place by metal strips. These weights overcome the buoyancy of the air in the hood and the natural buoyancy of tfce person wearing it. The buoyancy of the air in the hood tends to hold it in an upright position. Since the weights are suspended below the center of buoyancy of the body (which is in the chest), the shoulders are held firmly in the curved lower edge of the helmet. Fresh air is supplied to the diver by means of a single tube which leads to a small hand pump in the boat.. The pressure of the pumped air not only prevents the water from entering the hood, but keeps a fresh supply passing through at all times.