s of railway cars.
They were originally like those in ordinary use, and were guided by flanges on the rails, as in the case of the Sheffield Colliery Railroad, 1767.
At this time the rails were of cast-iron.
In 1789, car-wheels were made with flanges, to run on the edge-rail, which was first made of castiron and used at Lo, 1738.
Carding-machine, Lewis Paul, 1738.
Drop-box, Robert Kay, 1760.
Spinning by rollers, Lewis Paul or John Wyatt, 1738.
Spinning-jenny, Hargreaves, 1767.
Water-frame, Arkwright, 1769.
Power-loom, Rev. D. E. Cartwright, 1785.
Cotton-gin, Eli Whitney, 1794.
Dressing-machine, Johnson and Radcliffe, 1802– 1ng sixteen force-pumps.
In the third arch were three wheels, working fifty-two pumps.
The united effect was 2,052 gallons per minute, raised 120 feet high.
In 1767 Smeaton added wheels in the fifth arch.
Steam-engines were added about this time to assist at low water and at neap-tides.
Thus the matter remained till 1821.