United States or Philippines ? Vote for the TOP Country of the Week !
When the electrical pressure was normal, neither lamp was lighted; but if the electromotive force rose above a predetermined amount by one or two volts, the red lamp lighted up, and the attendant at the hand-wheel of the field regulator inserted resistance in the field circuit, whereas, if the blue lamp lighted, resistance was cut out until the pressure was raised to normal.
This operation may be accomplished while the machine is either running or at rest. The plate P rests upon ball bearings so that by simply bringing pressure to bear upon the hand-wheel, which is a part of the quill J, the spring and lock-nut may be held at rest and adjusted while the rest of the turbine remains unaffected.
It was much more than a mere development of the old hand-wheel.
The invention of the fly-shuttle by Kay of Bury had so greatly increased the demand for yarn that it became difficult to meet it merely by hand labor. A machine for carding cotton had been introduced into Lancashire about 1760, but until 1767 spinning continued to be done wholly with the old-fashioned hand-wheel.
We were wallowing through the China Seas in a dense fog, the horn blowing every two minutes for the benefit of the fishery craft that crowded the waterways. From the bridge the fo'c'sle was invisible; from the hand-wheel at the stern the captain's cabin. The fog held possession of everything the pearly white fog.
"Endless leather belting was used to transmit the power from the motor to the counter-shaft, and from the latter to the driving-wheels, which were the front pair. A vertical idler-pulley was mounted in a frame over the belt from motor to counter-shaft, terminating in a vertical screw and hand-wheel for tightening the belt to increase speed, or the reverse to lower speed.
This hand-wheel was located in the cab, where it was easily accessible.... "The rough outline sketched below shows the location of motor in relation to counter-shaft, belting, driving-wheels, idler, etc.: "On account of both rails being used for circuits, . . . the driving-wheels had to be split circumferentially and completely insulated from the axles.
By means of the hand-wheel, T, and worm-wheel, n, which closes or opens the levers, BB', the pressure of the boxes upon the central roller may be adjusted at will, the spring-bolt, F, allowing a certain amount of yield. The faces of the press-boxes, MM, are covered by a curved sheet of German silver attached to the point, Y. This sheet takes the place of the press papers in the ordinary process.
Much labor can be saved by using hand-wheel drills, cultivators, weeders and the other tools that have become so wonderfully popular within the past decade or two. Some typical kinds are shown in these pages. These implements are indispensable in keeping the surface soil loose and free from weeds, especially between the rows and even fairly close to the plants.
If the plants are not thinned, but are allowed to crowd, the lower leaves will turn yellow and drop off, thus entailing loss. For cultivation with hand-wheel hoes the plants in the rows should not stand closer than 2 inches at first. As soon as they touch, each second one should be removed and this process repeated till, when growing in a commercial way, each alternate row has been removed.
Word Of The Day