1954 – “Homko” Robot Remote-controlled Lawnmower – (American)

Want to lie in your hammock and mow the lawn in repose? The Homko Robot mower can be maneuvered by a remote control panel, one lever for forward, stop and reverse, and another for right and left. Since the cord that attaches this brain to the mower is 40 feet long, you can mow 40 …

1954 – Radio-controlled Lawnmower – William M. Brobeck (American)

William "Bill" M. Brobeck  joined the UC Berkeley lab in 1937 and moved several years later to Orinda with his late wife, Jane Knox. Their home became a local landmark in the mid-1950s, after Mr. Brobeck used his engineering talents to build an automatic lawn mower. Neighborhood kids would gather outside the couple's backyard to watch …

1950 – Fairbanks-Morse “Grass Finder” Rotary Power Lawn Mower – (American)

The gasoline-powered Fairbanks-Morse Grass Finder has no cord. Run it around the outside of your lawn once to give it the feel of things and from then on it runs itself, feeling for the high uncut grass with its left hand, as it were, and following along the edge of the previous cut until it …

1950 – Radio-controlled Lawnmower – Jim Walker (American)

Source: Popular Science, Mar 1950 Mows Lawn by Radio—Pretty Soft!    WHILE his robot lawn mower chugs around the lawn, Jim Walker, of Portland, Ore., takes it easy in his glider, sipping a cool drink and operating the radio controls.   Walker, a radio ham, long-time builder of radio-controlled model planes, and president of a …

1938 – Remote-Controlled Lawn Mower – Alvin Lodge (American)

Source: Mechanix Illustrated, Oct, 1938 (from blog.modernmechanix.com ) Builds Remote Control Lawn Mower Device Attaching two electric – motors, an old paint can, a wooden mixing bowl from a kitchen, sundry gears, wires and drive belts to a regulation lawn mower, Alvin Lodge, an unemployed mechanical engineer of Millersville, Pa., constructed a device that enables him …