After being washed by hand, the clothes were hung outside of the house on cords stretched between two poles and fastened with clothespins. This technique was used before the advent of electric dryers.
Marty McFly hung Dr. Emmett Brown's letter delivered by Western Union over a clothesline in front of the fireplace in Doc's mansion to dry as it had gotten wet in the rain from the Hill Valley Thunderstorm.
Marty discovered that the auto-adjusting and auto-drying jacket he wore when he jumped into the Courthouse Square lake did not need a clothesline or electric dryer when it got wet. Pressing a button on the jacket inflated it with air to dry the garment as well as the wearer.
By October 13, 1931, an elderly Edna Strickland rigged up a clothesline with metal objects as well as a frisbee pie plate to serve as an alarm, which was triggered when moving a thick string in front of her door.
Marty and Doc, needing to determine which time period Edna Strickland went to had to help her rembmer through simulating the events that resulted in her current state of mind. When Edna went into the damaged DeLorean time machine, Marty used the clothesline alarm to provide the events of time travel.
Behind the scenes
- Not only was a clothesline set up in the backyard for the scene of George hanging out his family's clothes in 1955, but also artificial grass was added as well.