Importance

Loading Importance Indicators...

Abstract

Phase break-section insulator devices for trolley contact wires of an overhead electrified railroad include parallel insulating rods joined up at their ends with two light weight crosspieces at each end. The rods have a glass fiber center surrounded by a tube of polytetrafluoroethylene, and this tube has grooves therein to prevent spread of moisture and dirt along the rod. Each rod end is joined to a metal sleeve, in turn joined to one of the end crosspieces. A contact wire clamp is secured between the two crosspieces at each end. A separate contact wire clamp adjacent each end of the device has current collector guides attached and extending along the device on opposite sides and also attached to the ends of the crosspieces. The crosspieces have openings for the contact wire and insulating rods to allow installation and adjustment of the device on the contact wire before this wire is cut. Similar crosspieces and guides may be used in the center section of a phase break. Supporting bars with weight reducing holes (as the guides also have) are attached to crosspieces for suspension of the device. Various guide, horn and arc extinguisher configurations are provided. Overlapping guides may be provided to provide no interruption of power when a current collector passes through a section insulator. Grooves may be provided all across insulating rods normally contacted by a current collector by adding an auxiliary current collector riding surface attached to the rods. Identical section insulator modules may be connected together by a grounded or ungrounded contact wire to provide a phase break.

Loading the Abstract Image...

First Claim