|Title||Biplane Cable Wrench|
|Collection||Delta Air Lines Airport, Office & TechOps Items|
|Description||Small wooden wrench for tightening the wing cables on biplanes such as Delta's Huff Daland Duster crop dusters and Western Air Express Douglas M-2 mail/passenger planes.|
Information provided by A.N. Dougherty: Wooden wrenches were used for the oval tie rods of the external wing bracing system on many of the old bi-planes. Wires used in the bracing system were called flying wires, landing wires, or stagger wires. The wires had lefthand threads on one end and righthand threads on the other end, so that turning them one way would tighten, while the other way would loosen.
To use the wooden wrench, the slot was placed over a wire and the middle of the palm of the hand over the point opposite the slot. With the wrench in this position, the rod could be turned to tighten or loosen the rod.
Huff Daland Dusters, Inc.
Delta Air Lines
Delta Air Service
Delta Agricultural Division
Western Air Express
|Credit line||Gift of A.N. Dougherty to Delta Air Lines|