4
5
the Edelman auger combination type.
the Edelman auger body is conical in shape and consists of two blades (1) joined in a bit
(2). the top of the blades is welded to a bracket (3), which is connected to the auger rod
(4) (see figure). The blades are vaulted and when entering the soil the sample is dug up
and evenly guided into the inside of the auger body. the vaulting of the blades not only
promotes digging up but also ensures a firm grip of the sample while permitting easy
emptying of the auger body.
the Edelman combination type auger’s diameter (measured diagonally between the bla-
des at the broadest part of the auger body) measures 7 cm, the blades measure 35 mm
in width. this permits a good hold of moderately cohesive soils, while cohesive soils can
easily be removed.
upper part, extension rods and connections.
the upper part measures 60 cm and has a detachable, synthetic grip. the extension rods
measure 1 m. a total length of 5 m can be achieved by linking the extension rods.
The tail ends of the extension rods are half-cylindrical and are fitted with either an eye or a pin. The eye and the
pin lock into each other and are secured by a coupling sleeve. the extension rods with conical thread connections
can be attached using a spanner.
The Push/Pull Handle.
The push/pull handle has two parts that can be fitted around a rod. Once
pressure is exercised on the two bars of the handle its construction ensures
a firm hold of the rod.
1.6
Bi-partite gouge auger set for hard soils
the bi-partite gouge auger set for harder soils consists of an upper part with beating head, a gouge auger with
heavy-duty auger body, a steel hammer, an Edelman combination type auger, extension rods and various accesso-
ries. the parts in this set have conical thread connections. the set is suitable for use in hard soils such as dry soils or
soils containing debris.
the gouge auger’s operational depth measures 100 cm
and has a 30-mm diameter (compare the single gouge
auger for hard soils in paragraph 1.3).
the upper part with beating head measures 10 cm to
ensure a proper operating position and stability.
1
3
4
2
Short upper part with beating head (conical thread)
Extension rod with bayonet connection
and coupling sleeve (above)
Extension rod with conical thread
connection (below)
