frame, as shown in Fig. 1,the action of the spring forces the pivoted section therein,thus firmly locking down the sash. When it is desired toraise the latter, it is only necessary to pull down the hooklever, G, which contracts the spring and withdraws the lock-ing piece. The section, E, is faced… … American Scientific Schools, We of Young America, like other good children, feel anatural exultation in commendation which comes from fa-ther-land or mother-country; and thus we Scientific Ameri-cans may take pardonable pride in such praise of one of ourAmerican schools of science as is contained…
Patents · Improved · Center · Iron · Consists · Scientific American · Hydrochloric acid · Cubic feet · Optic couches · Carbolic acid · Cast Iron · Sewing machine · Steam engine · Warm air · Carbonic acid
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