. Elements of technology :. t is no more than would run over the waste gatein a time of freshet. Besanfs Wheel.—To diminish the retardation occasionedby back water, Mr Besant has invented a wheel in which thefloats are placed obliquely in a double row, pi^^ ^as in Fig. 7, where the wheel is represent-ed as seen edgeways. Each pair of floatsforms an acute angle open at its this construction the floats escape moregradually and with less resistance from theback water, and likewise the resistance ofthe atmosphere is prevented, by the admis-sion of air at the open angle of the floats. Lam
. Elements of technology :. t is no more than would run over the waste gatein a time of freshet. Besanfs Wheel.—To diminish the retardation occasionedby back water, Mr Besant has invented a wheel in which thefloats are placed obliquely in a double row, pi^^ ^as in Fig. 7, where the wheel is represent-ed as seen edgeways. Each pair of floatsforms an acute angle open at its this construction the floats escape moregradually and with less resistance from theback water, and likewise the resistance ofthe atmosphere is prevented, by the admis-sion of air at the open angle of the floats. Lamherfs Wheel.—As water acts most advantageously uponundershot wheels, when the floats are perpendicular to the sur-faces of the stream, it has been attempted in different ways tokeep them always in a vertical position. In the method pro-posed by Mr Lambert, the floats are hung upon hinges or piv-ots at the extremities of the spokes, and are kept in a verticalposition by a large iron ring which is suspended from the lower. OF THE MOVING FORCES USED IN THE ARTS. 2G5 extremities of the whole, and is allowed to pass during therevolution through a slit in the middle of each float. In , is a view of one side of the wheelwith the ring attached. A is the ^^S- ^^ centre of the wheel, B B are spokesor arms of the water wheel, C D,C D are the floatboards which arehere seen edgeways. E E is alarge iron ring connected by jointsto the lower extremity of all thefloatboards, and serving by itsweight to keep them in a verticalposition. This wheel is probablytoo complicated for common iron ring is kept from movingsideways by guides, or frictionwheels, placed at each side. Breast Wheel.—The breast wheel is intermediate betweenthe overshot and undershot wheels, having the water deliveredupon it at about half its height, or at the ^. ^ level of its axis. In breast wheels inEngland, buckets are not commonlyemployed, but the floatboards arefitted accurately, with as little play aspo
Size: 1529px × 1635px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthordukeuniversitylibraryjantzcoll, booksubjecttechnology
