Cominco, Ltd.

Richard Deane

Clifford J Krauss

Ronald N Honey

Aage C Sylvest

Aircraft warning marker assemblies for marking power transmission lines are often suspended from the power line itself and are in a few cases equipped with a flashing light energized with power obtained from the power line. The assemblies have in the past been subject to physical failure caused by wind induced vibrations in addition to damage from corona discharges and tracking over non conductive parts. The present invention discloses means for alleviating these problems. The marker assembly, which is made up of a cone-like structure supported by a hanger system, employs vibration absorbing means between the hanger system and the cone-like structure to dampen vibrations of the marker assembly, and thereby reduces the possibility of physical damage from the wind. In addition, a ring of electrically conductive material at the bottom of the cone functions as a 'corona ring' in shielding the assembly from corona effects and tracking.

Aircraft warning marker assembly for power lines

A contact bar of novel design is provided for use in electrolytic cells of the type which have alternating, equally spaced, anodes and cathodes. The electrodes each have header bars, and each header bar has an extending end portion which is notched on its underside. The contact bars of the invention are useful in such cells when employed in the electrolytic recovery of metals such as copper, cadmium, cobalt, lead, nickel, silver and zinc. The contact bars are generally cyclindrical, and have cylindrical end sections and a spooled central section. The spooled central section is created by forming a plurality of alternately identical grooves with center lines equally spaced along the length of the spooled central section. The sidewalls of the grooves are sloped and form right frusto-conical walls which face one another on opposite sides of the groove. This spool-shaped contact bar provides excellent electrical contact via the notched portion of the header bars, the weight of the electrodes insuring high pressure contact between the notched header bars and points located on the sidewalls of the grooves. The contact which is created may aptly be described as a 'sloping-tangent contact'.

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Rossland, Canada

Richard Deane