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tool

Pump auger
identifier
ID 335
morphology
morphology
craft
holotype
MOT V 91.0685 (conical pump auger, taper or reaming bit) L=52cm WD=16cm WT=3550gr. Inscription: 88?.
holotype

MOT V 2007.0548 (conical pump auger, taper or reaming bit) L=41cm WD=11cm H=8cm WT=2566gr
holotype
MOT V 2015.0102 a6 (pump auger, first pump bit, piercer)
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

Taper or reamer bit with liner for the third phase of the boring

Taper or reamer bit for the second phase of boring, cutting sideways, to widen the hole trough the entire trunk to approx. 6 cm

Taper or reamer bits with liner 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