Scientific American
Some of the Developments of Mechanical Engineering during the Last Half Century. British Association Paper. By SIR FREDERICK BRAMWELL. The steam engine.--Evaporative condenser.--Steam navigation.--Marine governors.--Light engines and boilers.--The Perkins system.--Ether engine...
In 1831, we had thrashing machines and double plows, and even multiple plows had been proposed, tried, and abandoned. Reaping machines had been experimented with and abandoned;...
2. Chapter 2In 1831, there were a considerable number of paddle steamers running along some of the rivers in England, and across the Channel to the Continent. But there were no ocean steame...
5. Chapter 5A wooden table, secured to the upper edge of the board, H, is perforated to allow the saw to pass through, and is provided with an inserted hardwood strip which supports the bac...
8. Chapter 8From the fire balloon invented by the Montgolfier Brothers, in 1782, to the superior hydrogen balloon of M.M. Charles and Robert, no material advancement has been made, except t...
7. Chapter 7The principal tests were made through the conduits on Market Street, laid by the National Underground Electric Company as far as Ninth Street. A cable of five conductors was lai...
6. Chapter 6When the current of electricity enters the battery, the Pb3O4 on the positive plate is reduced to Pb, and the oxygen so set free attacks the Pb3O4 on the negative plate, and oxi...
3. Chapter 3I now come to the subject of the transmission of power. I do not mean transmission in the ordinary sense by means of shafting, gearing, or belting, but I mean transmission over...
1. Chapter 1Some of the Developments of Mechanical Engineering during the Last Half Century. British Association Paper. By SIR FREDERICK BRAMWELL. The steam engine.--Evaporative condenser.-...
9. Chapter 9I therefore began the return journey about one o'clock this morning, after taking the compass bearings of the principal points within sight on Wrangell Land, and making a hasty...