Major types of positive-displacement pumps include: 1  Roots. 2  Lysholm twin-screw. 3  Sliding vane. 4  Scroll-type supercharger, also known as the G-Lader.
I believe that the first Reich refers to the establishment of the Holy Roman Empire in the 9th century was Charles the Great. The Second Reich was the unification of Germany under the Prussian Kaiser Wilhelm II in 1870. Of course, we all know what the Third Reich was. The First Reich was the Holy Roman Empire. There is little agreement as to when it was founded. Most German historians date the foundation from the coronation of Otto I in 962. That 'empire' had a continuous existence till 1806. The Second Reich was created by Bismarck in 1871 and lasted till 1918.
Best Answer: Hitler was referring to the Autocratic German empire ruled by Otto Von Bismark during the first world war, which was commonly known as the Second Reich. The Holy Roman Empire was considered the First Reich. Well, it was a reference to Germans trying to get back their Glory Days when Germany was a strong country (the Weimar Republic really hurt for a lot of Germans). The first reich was the Holy Roman Empire (I know, but I didn't make the reichs). The second was the German Empire of 1871â1918. Presumably the Third Reich was going to follow in these two Empires. The history of modern German is often summarised as being 'three reichs and three democracies'.