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1630 was a common year starting on Tuesday of the Gregorian calendar and a common year starting on Friday of the Julian calendar, the 1630th year of the Common Era (CE) and Anno Domini (AD) designations, the 630th year of the 2nd millennium, the 30th year of the 17th century, and the 1st year of the 1630s decade. As of the start of 1630, the ...
The Deccan Famine of 1630–32 in India begins; it will kill some two million. In the Mughal Empire, Shah Jahan's Pearl Mosque at Lahore Fort is consecrated (completed 1635). The central square of Covent Garden in London is laid out, and a market begins to develop there. Johann Heinrich Alsted's Encyclopaedia septem tomis distincta is published.
The Kalthoff repeater was a type of repeating firearm that was designed by members of the Kalthoff family around 1630, [1] and became the first repeating firearm to be brought into military service. [2] At least nineteen gunsmiths are known to have made weapons following the Kalthoff design. [2]
In mechanical engineering, an end-face mechanical seal (often shortened to mechanical seal) is a type of seal used in rotating equipment, such as pumps, mixers, blowers, and compressors. When a pump operates, the liquid could leak out of the pump between the rotating shaft and the stationary pump casing. Since the shaft rotates, preventing this ...
Labyrinth seals are also found on pistons, which use them to store oil and seal against high pressure during compression and power strokes, as well as on non-rotating shafts. In these applications, it is the long and difficult path and the formation of controlled fluid vortices plus some limited contact-sealing action that creates the seal.