Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 362
while that of l\l raisesthe carbon, and the two are soadjusted that equilibrium isreached when the,arc is of the proper length. All of the lampsare fitted with an air dashpot or some damping device to preventtoo rapid movements of the working parts. The methods of supporting the carbons and feeding… … Fig. 1.3. 300 ELECTRIC LIGHTING 19 P [\aa/wwwvwvw\a[Ja/ VWWvWvAMM/VNMAAAi
Architecture · Building · Carpentry
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