Appleton's dictionary of machines, mechanics, engine-work, and engineering (1861)
Appleton, firm, publishers, New York. (1852, D. Appleton & Co.) · New York : D. Appleton · leaf 400
escribed) for carrying the ladders, &c. By this arrangement,and by being securely fastened at their bases, the four upright timber frames are firmly kept in theirperpendicular position. The form of these frames will be clearly understood by reference to the eleva-tion, Fig. 1090. It will be…
Mechanical engineering
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
