The inventor's universal educator. An educational cyclopaedia and guide for inventors, patentees, manufacturers, mechanics, and all others connected directly or indirectly with patents (1919)
jaw grip 679.—Ordinary split bar grip 680.—Steam trap bent spring which closes valve operated by steam pressure 681.—Three-way starting valve: A.—Supply; B.—Outlet to cylinder; C.—Ex-haust 682.—Another type of three-way starting valve 63S.—Auxiliary valve and air bellows for large organs… … [ 51 ]
Patents · Mechanical movements
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