In the 1910s, the Infant Lungmotor was a small-size device specially made for Asphyxia Neonatorum. No maternity ward was complete without this apparatus.
The infant model had to be used with caution to protect the small, fragile lungs of these patients; but anxious rescuers could pump too forcefully. These devices were condemned by studies which showed that they were liable to do more harm than good.
(Source Image URL from iCollector.com)