A comparatively small stream strikes the wheel with a pressure equivalent to a great head, say 300 ft., and as the quantity of water and number of jets striking the wheel can be regulated with the greatest ease and nicety, each machine can without danger be quickly brought up to its full speed when purging high-class sugars, or allowed to run slowly when purging low-class sugars, until the heavy, gummy molasses have been expelled; and it can then be brought up to its full speed for finally drying the sugar in the basket, a boon which all practical sugar-makers will appreciate.
As Amphiaraus had foretold, they all lost their lives in this war except Adrastus, who was saved by the speed of his horse Arion (Iliad, xxiii.
It has a very large starting torque, which enables it to overcome the inertia of getting the load into motion, and it lifts heavy loads at a slower speed and lighter loads at a quicker one, behaving, under the action of the controller in a somewhat similar manner to that in which the cylinders of the steam crane respond to the action of the stop-valve.
I know that this would sometimes involve a slight loss of speed in the chase; but long experience in various whalemen of more than one nation has convinced me that in the vast majority of failures in the fishery, it has not by any means been so much the speed of the whale as the before described exhaustion of the harpooneer that has caused them.
This involves the introduction of machinery for measuring and controlling the speed at which it leaves the ship and for measuring the pull on the cable.
The operation is as follows: the paper ribbon or perforated slip is moved forward by its centre row of holes at the proper speed above the upper ends of the rods S, M; should there be no holes in the ribbon then the cranks A, A' will remain stationary, although the beam B continues to rock, since the rods S, M are pressing against the ribbon and cannot rise.
Thus an engine working at maximum power may be used to haul a relatively light load at a high speed or a heavy load at a slow speed.
Typically they are steam pumps, the steam and water cylinders being set tandem on the same bed frame, generally without fly-wheel or other rotary parts; they may be single cylinder or duplex, simple, compound or triple expansion, and having a higher speed of stroke are smaller in all their parts than Cornish pumps.
In a steam vessel running at high speed on an ocean route, with engines working smoothly and uniformly, a careful officer with correct line and glass can obtain very accurate results with the common log.
Elkin found that the chief drawbacks to speed and convenience in working this heliometer were: (I) The loss of time involved in entering the corresponding readings of the micrometer pointings on two scales.