What was that? 11 inventions that have changed beyond recognition over time

Engineering does not stand still. Things that are firmly in use are constantly being upgraded, and with each new model they are moving further away from the original. The more interesting it is to look at what the familiar devices looked like initially. I wish I could see the video. The first lawnmower, they say, hummed almost like a tank.

By the beginning of the twentieth century, the United States was already in full swing on roller skates, which in their design were similar to today's. And in Europe at this time, the Takypod pedal rollers, invented by Edward Petrini, were popular. They look surprisingly modern, it is not so difficult to imagine such things in a sports goods store.

The Marchant XLA is one of the first calculators put into mass production. It was developed by an American company in 1913. This machine was used mainly by cashiers in large department stores and bank operators. The calculator was accompanied by a 130-page manual.

In 1905, the German Karl-Ludwig Nessler introduced the first perm machine. Twelve long and rather heavy brass rods were wound around the hair, connected to a warming electric apparatus. The procedure of beauty guidance took about five hours.

The first lawnmower was used as an experiment in the botanical Garden of St. Louis, USA, in 1916. It was so loud that the delivery of the first batch had to be suspended. A quieter version appeared a year later.

Pioneer printer: a mechanical computer that had an automatic printing function and was called a "difference machine". It was created in 1834 on the basis of the invention of the English mathematician Charles Babbage.

American-made sound locator. With the help of such things, the military monitored the airspace in the 20s of the last century.

Orthopedic exercise machines, invented by the Swedish doctor Gustav Zander at the end of the XIX century. The Stockholm aristocrats were delighted.

Thor-one of the first washing machines with an electric drive, model 1908. The machine had a wooden drum, which alternately made eight turns clockwise and eight — counterclockwise.

This is how American life jackets for sailors looked in 1917. More precisely, rescue mattresses.

The toaster of the American company Frary & Clark (1924) is not the first, but the most beautiful. They don't do that now.

In 1956, IBM introduced the hard disk drive. It weighed over a ton and stored 5 megabytes of data.