Electricity as a motive power for cranes is of more recent introduction.
Steam is an extremely useful motive power for all cranes that are not worked off a central power station.
And as the motive power of this formidable mechanism of force they could rely on the native suspiciousness of the Parisian populace, exaggerated now into madness by famine and the menace of foreign invasion.
Many of the factories derive their motive power from the falls of a mountain torrent known as the Salto de las Aguas.
The plants using steam for motive power are at Caracas, Maracaibo, Valencia and Puerto Cabello.
Pettersson has made a careful study of ice melting as a motive power in oceanic circulation, and points out that it acts in two ways: on the surface it produces dilution of the water, forming a fresh layer and causing an outflow seaward of surface water with very low salinity; towards the deep water it produces a strong cooling effect, leading to increase of density and sinking of the chilled layers.
For overhead travellers in workshops, and for most of the cranes which fall into our second class, electricity as a motive power has already displaced nearly every other method.
But though reaction was the motive power of this new machinery of government, it could not do away with many of the practical and obvious improvements of 1848, and it was not blind to some of the indispensable requirements of a.
It is now possible to apply motive power exactly where it is wanted, and to do so economically, so that the crane designer has a perfectly free hand in adding the various motions required by the special circumstances of each case.
Nearly one-half of the motive power used in Saxon factories is supplied by the streams, of which the Mulde, in this respect, is the chief.