1952 – Deep-Sea Diving Robot – Al Mikalow (American)

TREASURE HUNTING ROBOT-A 1,500 pound diving robot is checked over by diver Al Mikalow (right) and Paul Ilsley, a diving instructor at Mikalow's diving school in Oakland, Calif. Mikalow intents to dive in the robot later this summer in a search for treasure which legend says lies waiting in the Rio de Janiero, which sank …

1952 – Stewart Automatic Lawn Mower – Sterling Stewart (American)

1952 – Stewart Automatic Lawn Mower by Sterling Stewart SCIENCE IS SERVED Seattle: Sterling Stewart of Sioux City, IA., a graduate science student at the University of Washington, isn't lazy in the true sense of the word. He's able to relax with a cold drink while his lawn is mowed only because he had the …

1952 – Remote Controlled Lawn Mower (Patent) – Barton G. Siebring (American)

Remote Controlled Lawn Mower (Patent) – Barton G. Siebring Patent Abstract: This invention relates to power operated lawn mowers and more particularly to a power operated lawn mower equipped for remote control, so that the operator does not have to follow and guide the lawn mower, but can control the lawn mower without moving from …

1952 – Meccano Giant Walking Dragline – (British)

There are various websites that contain the full pdf of Meccano Instruction manuals and Meccano Magazines. You can download them from nzmeccano.com .   An early model from 1975. See also Wes Dalefield's excellent site on the Meccano Giant Walking Dragline here.  See real Walking Draglines and illustrations on the walking mechanism here.

1952-> Gyro Gearloose Walking Inventions – Carl Barks (American)

"Gyro Gearloose" walking inventions featured here appeared in comics from 1967 owards, I believe. From Wiki: Gyro Gearloose is a fictional character, an anthropomorphic chicken created by Carl Barks for The Walt Disney Company. He is part of the Scrooge McDuck universe, appearing in comic book stories as a friend of Donald Duck, Scrooge and anyone …