d telephony with which per hour, which require at times, approximately, 2,500 The Key route has twenty-six of these trolleys in also the press has for some time been occupying itself. to 3,000 amperes to be collected from the overhead con- use, and one other road has arranged to install fourteen.… … ter is a simpler appa- The device is prac- Fig'. 2.—The Apparatus with Cover Removed, Showing: Fig. 1—The Apparatus Complete in its ratus than the preced- tically noiseless when Original Form. Interior Mechanism. ing, and, since it ope- operating at any speed, rates by means of a mag- owing to the…
Patents · Apparatus · Wire · Cylinders · Device · Scientific American · Heating surface · Valve gear · Total weight · Gas engine · Inches diameter · Sir william · Square feet · American september · Reference work
Internet Archive · Public domain (published before 1931). Free to use for anything.
