. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . ntimately connected with its regu-lating properties. Magnetism may be excited in the field-magnets in various ways. 1. Magneto-Dynamo.—This type, shown in Fig. 17, is theoldest employed, and has permanent steel magnets. This formFig. 16.—Brushes ^^ ^^^ ^^*^ small machines for special i)ur[)oses, as in magneto-calls, telephones, and for experimental work,but has long been discarded in large machines on account
. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . ntimately connected with its regu-lating properties. Magnetism may be excited in the field-magnets in various ways. 1. Magneto-Dynamo.—This type, shown in Fig. 17, is theoldest employed, and has permanent steel magnets. This formFig. 16.—Brushes ^^ ^^^ ^^*^ small machines for special i)ur[)oses, as in magneto-calls, telephones, and for experimental work,but has long been discarded in large machines on account of the great weight of the machinefor a given output, and because the permanent magnets gradually diminish in strength,and thus reduce the output of the machine. On acccuuit of their simplicity, however, perma-nent magnets are still employed in machines of the I)e Meritens type, intended for light-house work. (See Alliance. Pixii, and other magneto-machines, pp. 519, 520, old edition.) 2. Separately Dynamo.—This type was emi)loyed \)\ Faraday and later by Wildein 18GG (see p. 532, old edition). This machine, as well as the magneto-dynamo, has the field-. 1 . ($f f
Size: 1389px × 1799px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade189, booksubjectmechanicalengineering
