Abstract: An apparatus for installing cables in overhead transmission and distribution systems and a corresponding method of use are disclosed herein. The apparatus described herein may comprise a dual messenger rolling cable spacer used to install cables in overhead transmission and distribution systems. In various embodiments, the method of using the dual messenger rolling cable spacer may include installing a carrier messenger wire across a span between utility structures. One or more rolling spacers may then be hung from the carrier messenger wire via a roller such that the roller is in contact with the carrier messenger wire. A set of cables and a circuit messenger wire may be affixed to the one or more rolling spacers. The circuit messenger wire may then be pulled across the span causing the one or more rolling spacers to roll along the carrier messenger wire, thereby pulling the set of cables across the span.

Abstract: In a method and apparatus for duplicating an original key, the keyway and keycode of the original key are measured and duplicated in a preform. The preform used in the duplication process need not include any keyway or keycode prior to the duplication process and, therefore, a single type of preform may be used in generating duplicates of many different types of keys. The apparatus may be automated to take the measurements of the original key and to cut the duplicate key, thus reducing the possibility of producing a nonfunctional duplicate.

Abstract: In a method and apparatus for duplicating an original key, the keyway and keycode of the original key are measured and duplicated in a preform. The preform used in the duplication process need not include any keyway or keycode prior to the duplication process and, therefore, a single type of preform may be used in generating duplicates of many different types of keys. The apparatus may be automated to take the measurements of the original key and to cut the duplicate key, thus reducing the possibility of producing a nonfunctional duplicate.