Pump auger

identifier

ID 335

morphology

craft

holotype

MOT V 91.0685 (conical pump auger) L=52cm WD=16cm WT=3550gr. Opschrift 88?.
holotype

MOT V 2007.0548 (conical pump auger) L=41cm WD=11cm H=8cm WT=2566gr

holotype
MOT V 2015.0102 a6 (pump auger)
description

Information about these tools and the experiment in 2019 to hollow an oak and compose a wooden water pump can be read on these pages. [MOT]

MOT V 2007.0548

MOT V 2015.0107 a6                                                            Pump auger for the first phase of boring, cutting at the nose, to drill a pilot hole of approx. 4 cm through the entire trunk

Two-armed crank for the pump auger

Pump auger for the third phase of the boring

Pump auger for the second phase of boring, cutting sideways, to widen the hole trough the entire trunk to approx. 6 cm

Pump augers for the third phase of the boring, cutting sideways, to widen the hole for the pump valves and spear to approx. 8 cm

Four-armed crank for the pump auger