The 'Proto' self-contained breathing apparatus was manufactured by the Siebe Gorman Company c ... front of the user with leather straps and a belt. The 'Proto' self breathing apparatus on display ...

Siebe, Gorman and Co., Ltd., two illustrations (Fig. 1) of the Davis submersible decompression chamber already described in these columns (NATURE, March 15, p. 415; 1930) and to the British ...

It was made for admiralty during WW1 by Siebe Gorman, submarine engineers. It is made of copper and brass and would have been used with a two man diving pump.

The 'Proto' self-contained breathing apparatus was manufactured by the Siebe Gorman Company c ... front of the user with leather straps and a belt. The 'Proto' self breathing apparatus on display ...