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 50
above diaphragmand mechanism. It shows this diaphragm to have a much greater move-ment between 2 and 3 pounds per square inch difference of pressurethan at others, and it should be noted that this characteristic inthe curve is noticeable throughout the succeeding diaphragm tests.The question arose… … ^Dkcfch of Phton /Irrongementu^ed with inch diophraqm 22. Data Sheet No. 3. Readings taken in teste on D^^ aphragm No. 3 , which is a circular. corrugated copper disk, two and one -fourth inches in diameter. A perpendicular piston and pressure gage mechanism were used to measure the movement.…
