Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 332
makes contact at U with the back stop T. Theaction of the bell is as follows: When the circuit is closed throughthe bell a current flows from terminal 1, around the coils of themagnet, through the spring K and contact point D, through thbback stop T, to terminal 2. In flowing around the… … Fig. 8. 278 ELECTRIC BELL WIRING around the electromagnet and the cores consequently lose theirattractive force. The armature is then carried back to its originalposition by the spring Iv, making contact at D, and the process isrepeated. The hammer will thus vibrate and the bell continue to ring as…
Architecture · Building · Carpentry
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