A hand pump is a water pump that is manually operated by means of dick ( rocker arm ). This pump design has been used in rural areas without electricity until the 1950s world's water supply. These pumps generally work as a piston pump with a piston and a leather cuff. They suck water to a depth of up to 8 meters. The performance is, depending on the depth, strength and endurance of the operator, 10 to 40 liters per minute.
Especially in the cities of Berlin and Magdeburg formative historical street pump is Trinkwassernotbrunnen originate their stand for part of the 19th century, like the one pictured Lauchhammer neo-baroque fountain of Eisengußhütte Lauchhammer.
In Leipzig there still exist many Handschwengelpumpen in public spaces, which are provided as cultural monuments under protection today.
Fountain with Schwengelpumpen are distributed for use as a drinking water emergency, as they can be operated independently of the mains and potable water mains.
Promoting the volume of water carried in the hand pump in two steps. By pressing down the Schwengels the piston is pulled up. The vacuum in the pump chamber, the inlet valve opens and water flows into it. In the second step, the clapper is pulled up again. The piston pushes down, making the exhaust valve opens and the water volume of the pump chamber leaves through this. When re- raising of the piston, the water is pumped through the water outlet.
- Pump details
Leather cuff / valve A = open B = closed C = view from below