1936 – The Gyro-Cycle – Hubert Charles Henry Townend (British)

The Gyro-Cycle – A pseudo-pedalling machine. Source: "Mechanical Toys" by Athelstan & Kathleen Spilhaus, 1990 First Meccano Magazine advertisement was in April 1938. A very ingenious scientific toy. Toy was invented by a famous airplane designer in England. Action depends on the well known gyroscopic principle. The front wheel is the gyroscope and drives the …

1988 – “Wendell” the Unicycle Rider – Garner Holt (American)

Wendell the Unicyclist premiered in 1988, and is the world’s only unicycle riding animatronic figure. He performs without any visible means of support. Source: The Illusion of Life: Lifelike Robotics, Gene W. Poor, 1991  "… But the most impressive component Garner brings to the animation marketplace is an extraordinarily creative mind with superb  problem-solving and …

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.

1928 – Meccano Walking Tractor – A. L. Spilhaus (Sth African) and C. Lee (British)

1925 Nilsson Walking Tractor It is not always possible to use vehicles with wheels, especially when the ground is heavy and the surface uneven. The problem of overcoming the difficulty has long occupied the attention of inventors, and a new type of transmission was evolved when caterpillar action was used for the tanks during the …

1916-> Erector Robot Models – A. C. Gilbert (American)

Erector: Metal construction modelling sets invented in 1911 and patented in 1913 by A. C. Gilbert.  Very similar to the earlier Meccano by Frank Hornby. Before the word "Robot" was coined and popularised from 1920 onwards, walking machines resembling people were called "Mechanical Men" or "Automatons". Erector called one of their early moving constructions a …