Peck Rope
Suneo comes to return a borrowed umbrella, but Doraemon and Nobita are both too lazy to get up. Doraemon pulls out a rope that lets him retrieve things. Nobita wants to borrow the rope but during Doraemon and Nobita's fight, it gets thrown out the window and into Suneo's hand. Suneo uses the rope to steal and pull practical jokes before escaping and leaving the rope on the ground. Nobita finds the rope and is blamed, but denies that he is able to use the rope. A little girl falls into a nearby ditch, Nobita struggles but still pulls her out with the rope. The girl reveals that it was Suneo that was playing with the rope.
Aired 23/08/1979EP 124 - Peck Rope

Doraemon
Nobi Nobita is a 4th-grade boy in Tokyo. One day, a round, blue cat-style robot (minus ears) pops up in his desk drawer. Nobita's great-great-grandson (or something) lives in the 22nd Century, but thanks to Nobita's mistakes, the entire family is living in poverty. To rectify this, Nobita's descendent is sent Doraemon back to the past, to help prevent Nobita from making mistakes. Of course this is a difficult task since Nobita is the weakest and least intelligent child in his class. Doraemon does, however, have a 4-dimensional pocket on his front, which contains cool gadgets from the future. With these toys, Doraemon will try to help Nobita. Unfortunately, Nobita also has the bad habit of misusing Doraemon's gadgets and landing himself in yet more trouble?
(Source: AnimeNfo)