Model: 122 ??? Force Pump (Boston) or Lift and Force Pump (Newark) ???
This is the ordinary force pump having two valves. The plunger is raised by the handle causing valve A to rise, drawing water from low level into the pump chamber. On the descent of plunger, valve A closes and water is forced through valve B into discharge pipe at higher level. As handle is again raised, water in discharge pipe closes valve B.
[Virginia Downward & William M. Clark, 1930]

[Editor’s Note: This pump mechanism uses elements of a slider crank mechanism, with a crank arm, connecting link and sliding or prismatic joint. The slider crank is also used in a billion internal combustion engines. The Reuleaux collection contains a number of slider crank models including C-2 and D-1. FCM]

Francis Moon 2005-00-00

Reference :

Resources :

Related Models :