Tiny Tube for Hearing Aids (Feb, 1947)
This tube is about the same size as an entire modern hearing aid.
Tiny Tube for Hearing Aids
Only 3/4-inch long and 3/8-inch wide, tubes like this powered such war devices as walkie-talkies and mine detectors. Now their maker, Sonotone, is using them in hearing devices. Three of them go into Sonotone’s latest instrument, which can be used for either low- or high-powered amplification.
HORSE OF STEEL RUNS ACROSS FIELDS (Apr, 1933)
I have no idea if this worked, or if it was even real, but it sure does look cool. Recently Boston Dynamics has made a robot pack-mule that is somewhat similar.
Here is a later article in Mechanix Illustrated with little tanks that look somewhat similar.
HORSE OF STEEL RUNS ACROSS FIELDS
A MECHANICAL horse that trots and gallops on steel-pipe legs, under the impulse of a gasoline engine, is the recent product of an Italian inventor. With this horse, he declares, children may be trained to ride. The iron Dobbin is said to canter along a road or across a rough field with equal ease. Its design recalls the attempts of inventors, before the days of the automobile, to imitate nature and produce a mechanical steed capable of drawing a wagon.