Scientific American, Vol. 37, No. 2 (July 1877)

1877 · 16 pictures

Valve · Patents · Improved · Iron · Crank · Center · Center punch · Axle · American supplement · Reverse lever · Scientific American · Slide valve · Lost motion · Heat reservoir · Crank pin · Punch mark · Fixed center

Internet Archive · Public domain (published before 1931) · More from this library