This Legrand ‘nodding donkey’ oil pump was built sometime in the 1940s by the Legrand industrial group and was installed at the Eakring oilfields in Nottinghamshire. The oil pump stands at approximately 18 feet and 6 inches, and is around 5 feet 6 inches wide, 11 feet long, and weighs an estimated 3 tons. The body and frame of the oil pump is painted a light green. This design by Legrand includes a double pitman design where the walking beam is pulled up and down by two arms either side of the counterbalance. At the other end of the walking beam is the ‘horsehead’ which serves as one of the two counterbalances for the pump, and to which the pump is connected to the wellhead via a rod bar. The attached motor will turn a belt, moving the walking beam up and down creating a ‘nodding effect’ as the horsehead elevate and declines. Oil pumping unit (nodding donkey) 1940
This Oweco ‘nodding donkey’ oil pump was built sometime in the early 1940s by the Oil Well Engineering Company Limited (OWECO) and was installed at the Eakring oilfields in Nottinghamshire. The oil pump stands at approximately 15 feet, and is around 4 feet 6 inches wide, 11 feet long, and weighs an estimated 2.5 to 3 tons. The body and frame of the oil pump is painted a light green. This design by OWECO was very simple, where the walking beam is pulled up and down on one side two arms attached to a motor. At the other end of the walking beam is the ‘horsehead’ which serves as a counterbalance for the pump, and is also where the pump is connected to the wellhead via a rod bar. The attached motor will turn a belt, moving the up and down creating a ‘nodding effect’ as the horsehead elevate and declines. Oil pumping unit (nodding donkey) 1940-1945