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| Number | Title | Issue Date |
| 4473160 | Apparatus for lowering articles from a building An apparatus for lowering articles from a building including a tower having a boom extending therefrom. A transfer carriage is slideably mounted on the boom and has a latching mechanism for engagement with an end plate on the boom. The carriage also has a... | 09/25/1984 |
| 4267932 | Skyline logging carriage A carriage is provided for guided movement along a skyline and includes guide structure for supporting a dragline for longitudinal shifting relative to the carriage. A skyline stop is provided for coaction with the carriage to limit downward movement of t... | 05/19/1981 |
