Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 238
8Sod. RAILWAY PNEU-MATIC SIGNAL.—An aircylinder near the rail is operat-ed by the wheels passing overthe lever A, pressing it againstthe cam S, on a rocking shaftB, lifting the plate C, and theconnected piston. Elevationand plan. 880^. A SELF REGIS-TERING TIDE GAUGE.—S is the float in the tide…
Mechanical movements
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