How was the pneumatic system invented?

"margin-bottom:.0001pt;text-align:justify;line-height:normal;">In

1650, Guericke invented the first air pump. It could produce a

partial vacuum and Guericke used it to study the phenomenon of

vacuum and the role of air in combustion and respiration. The best

known pneumatic device is of course the pneumatic tube. A pneumatic

tube is a method of transporting objects using compressed air. In

the past, pneumatic tube was often used in large office buildings

to transport messages and objects from office to office. In 1829,

the first stage or compound air compressor was patented. A compound

air compresor comprases air in successive cylinders. The hand

bellows used by early smelters and blacksmiths for working iron and

metals was a simple type of air compressor and the first pneumatic

tool.