Inside Out Library · Explore

Scientific American, Vol. 63, No. 12 (September 1890) (1890)

leaf 4

An illustration from Scientific American, Vol. 63, No. 12 (September 1890), 1890, leaf 4
backward move- AN IMPROVED LIFTING TRUSS GIRDER. ment of the frame by the teeth of a segmental wheel The illustration represents a contrivance by means secured on a transverse shaft, having a fiy wheel and of which it is possible to raise floors, ship decks, etc., the usual pulley connected with… … tons, and last year 4,717,730 tons. OLSEN'S LIFTING TRUSS GIRDER. HAYTON'S MECHANICAL MOVEMENT. © 1890 SCIENTIFIC AMERICAN, INC.

Inch · Fulling · Impurities · Munn · Water · Scientific American · Patents · Pneumatic dynamite · Pig iron · Corpus christi · Census year · Steam drum · Pure magnesium · Practical treatise · Soft coal · Large number

Internet Archive · Public domain (published before 1931). Free to use for anything.

More pictures from Scientific American, Vol. 63, No. 12 (September 1890)

More like this