Rotary Vane Vacuum Pump Rotary vane pumps are a type of oil sealed vacuum. These air-cooled, direct-drive pumps are used to pump dry, clean non-reactive gases. They are valued for their small carbon footprint and reliability.he History of Vacuum Pumps Vacuum pumps have been around for quite some time. Originally, they were created just for use in demonstrations and research. When this was the case, they were made from glass and were about the size of a large glass jar. To make it work, users would coat its edges with liquid sealant, then place it upside down on a surface with an outlet. Then, they’d remove air via an air pump attached to the surface outlet. vacuum pump Vacuum Pumps – Vacuubrand, Inc. The first true vacuum pumps were invented in the 1650s by Prussian engineer and physicist, Otto Von Guericke. His first vacuum pump invention was the air pump (1650), which he used to create partial vacuums. It was known to achieve must lower pressure levels than those pumps that came before it. In 1654, he demonstrated efficacy of his vacuum pump during an experiment known today as the Magdeburg hemispheres experiment. During said experiment, he proved that not even two teams of horses could separate two hemispheres that he had joined together with a vacuum (evacuating the air). In the 1660s, Irish scientist Robert Boyle improved on Guericke’s model and used it to conduct experiments of vacuum properties. Then, British philosopher Robert Hooke helped Boyle develop an air pump that creates a vacuum. After this, the scientific and engineering community lost interest in vacuum pumps for quite some time. It was not until 1855 that they returned to it. In 1855, Heinrich Geissler invented the mercury displacement pump, quickly leading to the invention of the vacuum tube. In 1865, German chemist Hermann Sprengel invented a vacuum pump (the Sprengel pump) that uses mercury drops, which fall through a small-bore capillary tube, in order to trap air that will be evacuated from the system. Later, Nikola Tesla created a device that contained a Sprengel pump, designed to create a high degree of exhaustion. Vacuum pumps created during the 19th century were simple, low capacity fans that created small vacuums. Today, vacuum pumps, while based on these same models, are far more effective and efficient than their predecessors.