A recording device for indicating (a) the flow of water in pipes, (b) the speed of boats (1909)
Baldwin, Frank Boyd, Hiveley, Oscar George · leaf 66
Sketch showing Rubber Diaphracjm cci:>firon cq^c and pj:>fon connection^ 28. Data Shaet No. 5,Readings taken from test on a soft rubber diaphragm. Thediaphragm was saucer shaped and six inches in diameter,The move-ment was registered on a dial which was divided into degrees. >nce of… … U. OF I. S. S. FORM 3 30. was laid to the groat flexibility of the rubber. As Indicatorspring acted lightly against the central portion of the diaphragm,but the pressure of the water was probably taken up by the elas-ticity of the rubber rather than by the spring. From the test onthis rubber…
