. Appleton's dictionary of machines, mechanics, engine-work, and engineering. sess the advantages of each of the former, being effective andstrong, yet simple, in point of constructioa It was patented by Mr. Galloway in the year 1835, althoughfirst used by Mr. Field in 1833. The floats are divided into a number of parts, which are placed upon WIRE EOPE MACHINERY. 913 the wheel in tha curve of a cycloid, so that they enter the water at the same spot, and follow one an-other so rapidly as to cause little resistance to the engine ; in passing the centre, there is full scope totheir action, and in
. Appleton's dictionary of machines, mechanics, engine-work, and engineering. sess the advantages of each of the former, being effective andstrong, yet simple, in point of constructioa It was patented by Mr. Galloway in the year 1835, althoughfirst used by Mr. Field in 1833. The floats are divided into a number of parts, which are placed upon WIRE EOPE MACHINERY. 913 the wheel in tha curve of a cycloid, so that they enter the water at the same spot, and follow one an-other so rapidly as to cause little resistance to the engine ; in passing the centre, there is full scope totheir action, and in coming out they allow the water t» escape readily from them. The draught of the vessel is necessarily greatest at the commencement of a voyage, particularly ifit should be a long one, on account of the full quantity of coals for the whole voyage increasing theamount of tonnage, and other similar contingencies ; the wheels are, therefore, immersed very deep inthe water, which has the effect of increasing the resistance; but this loss of power diminishes as the 3921. vessel proceeds. The adjusting of the floats of paddle-wheels to the requisite depth of immersion iscalled reefing the floats, and there is some difficulty connected with it; but this defect may be partlyrectified with the cycloidal wheels, as the outer floats need not be fixed at starting, but fitted on as thevoyage proceeds; and the larger the wheel, the less will the vessel be affected by this defect, as thediameter of the wheel increases in a greater proportion than the variation of immersion of the vessel;the latter is consequently proportionately less than other vessels, when each are laden. WIRE COVERING- MACHINE. Fig. 3924 is a simple machine for covering bonnet or telegraphwire, and which may be easily constructed. There are other kinds of machines which we have seen inoperation that can cover five and six wires atonce, but this one is certainly not surpassed for 3924. simplicity. A A, sole of machi
Size: 2079px × 1202px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, booksubjectmechanicalengineering, bookyear1861
