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 46
Plan of ^4-inch diaphraqm. Data Sheet No. 2.Readings taken In the test on Diaphragm No.l, which isa copper, circular corrugated disk, two and one-fourth inch indiameter. A ball-hearing lever arm and an Ames extensometer wereused to measure the movement of the diaphragm.. Difference… … U. or 1, S. S. FORM -i 20. was tried. In place of the lever and extensometer that were usedin the preceeding test, a piston was fastened perpendicularly tothe center of the diaphragm and its motion was transferred to apressiJire gage mechajniBm; thus a movement of the diaphra-gm could beobserved by…
