Papers on overhead contact systems

H. F. Brown: Mr. Viele's paper emphasizes many points which are in line with similar experience on the New Haven system such as I. The advantage of the auxiliary wire above the working conductor. 2. The necessity for proper steadying devices for the trolley, on both tangent and curve construction, especially against transverse wind loads. 3. The avoidance of long spans in exposed locations. 4. The advantage of locating sectionalizing and splicing devices at or near the supports. 5. The avoidance of hanger members which do not make a positive contact with both the messenger and the contact. 6. The importance of correlating the pantograph design with that of the overhead contact system, and the possibility and desirability of further refinement in the pantograph design.