Photos: First Half Of 20th Century Cool Inventions

A tripmaster, which had an automatic rolling map on the dashboard with identifying marks, like bridges, crossings and levels, circa 1930s. (Mary Evans Picture Library/CATERS NEWS)

There are lots of cool inventions in the first half of the 20th century.

Electrically heated vest, portable radio hat and lots of other cool things.

There’s even an early version of a car GPS unit.

Just that it doesn’t use satellite.

Now why not we take a look at some of the inventions…

(Please click the photo for a larger image)

We all like a bit of music in bed but this woman has taken it to the next level. A piano has been placed at the foot of her bed to enable her to play music. (Mary Evans Picture Library/CATERS NEWS)

A tripmaster, which had an automatic rolling map on the dashboard with identifying marks, like bridges, crossings and levels, circa 1930s. (Mary Evans Picture Library/CATERS NEWS)

A Halloween mask? No, a plastic face protection from snowstorms in Montreal, Canada in 1939. (Mary Evans Picture Library/CATERS NEWS)

Although this may look bizarre this gas proof pram was invented to keep babies safe during an air raid. The pram, pictured in Hextable in Kent in 1938, has an air-tight lid provided with a window and with a gas mask filter. A rubber bulb at the rear is squeezed at intervals forcing the stale air out and replacing it with fresh air drawn in through the filter.(Mary Evans Picture Library/CATERS NEWS)

A Colt 38 with built in camera; when pulling the trigger the camera automatically shoots images. To the left, a series of images taken by the camera. This invention weighs 170g, the lens is 4cm wide and it was invented in the 1930s to decrease crime. (Mary Evans Picture Library/CATERS NEWS)

French police checks a grate that has been mounted onto the front of a car for safety in 1924. (Mary Evans Picture Library/CATERS NEWS)

Super tank: A car with five axles and ten wheels which is able to run through ditches of a metre deep and almost two metres wide, and down slopes of degrees with a speed of 65 km per hour in 1936. (Mary Evans Picture Library/CATERS NEWS)

Fashionable and practical: A portable radio in a straw hat, made by an American inventor in 1931. (Mary Evans Picture Library/CATERS NEWS)

Rock-a-bye-baby: This pram with a radio, antenna and loudspeaker is intended for the mothers who need peace and quiet. Instead of a baby, two dolls have been put in the pram to illustrate the goal of this invention in 1921. (Mary Evans Picture Library/CATERS NEWS)

Reading in bed just got easier with these pair of spectacles especially designed for night-time, 1936. (Mary Evans Picture Library/CATERS NEWS)