water-raising

The weather had cooperated, with no early-winter storms blowing across the waters, but with a cold westerly wind that the great ships had tacked into a fine, water-raising speed.

Immortalis Salvatore, R. A., 1959- 2003

It is often equipped with pulleys for two simultaneous but. independent water-raising operations and is accordingly robust.

7. Profiles 1986

Aside from water-raising applications, the potentially most important use of animal powers is, doubtlessly, the grinding of grain.

7. Profiles 1986

Due to the varying tractive power in combination with the unidirectional, circular path described by the draft animal, Stoney's mote may be regarded as a cross between an intermittent and a continuous water-raising device.

7. Profiles 1986

This water-raising rig was designed by the French engineer Jean Sahores, who since the mid '70s has been working on simple wind-driven, hand-operated pumps, primarily for use in the Sahel.

7. Profiles 1986

Especially with regard to nonagricultural applications, that motive soon came to be a decisive factor in most new and improved systems such as water-raising facilities in castles and fortresses, where more and more treadwheels and treading disks had come into use since the 17th century.

5. Draft Animals: All Work and No Play? 1986

The technical aspects of the purely intermittent Delou and the purely continuous Persian Wheel, together with some intermediary forms of water-raising facilities, are described in detail in Chapter 7.

5. Draft Animals: All Work and No Play? 1986

This water-raising arrangement was designed by British colonial engineers just after the turn of the century.

7. Profiles 1986

Judging by the data on a water-raising treadwheel that was in operation until the mid-'30s at Conradsburg in the Harz Mountains, one could easily come to the opposite conclusion, since the system was veritably ridden with friction losses: the bearing had to support not only the weight of the disk or wheel, but also that of the animal.

5. Draft Animals: All Work and No Play? 1986

While illustrates as well - building application 'the system is equally suitable for water-raising purposes, in which case relatively large delivery vessels are required.

7. Profiles 1986