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A Soil Probe Pulling Device Facilitates Soil Sampling

IITA, c/o Lambourn, Carolyn House, Croydon CR9 3EE, UK

View larger version (21K): [in a new window]   Fig. 1. Parts used in the construction of the soil probe puller. A. Legs (2): 0.75 in. NPT pipe, 18 in. (45 cm) long, threaded both ends. B. Leg supports (4): 0.75 in. NPT pipe, 6'' (15 cm) long; threaded one end. C. T-joints (2), 0.75 in. NPT. D. Pivot rod (1), 0.75 in. NPT pipe, 8 in. (20 cm) long, threaded both ends. E. L-joints (2), 0.75 in. NPT. F. T joint, 1 in. NPT (ends) x 0.75 in. NPT (center). G. Handle, 0.75 in. NPT pipe, 18 in. (45 cm) long, threaded one end.

View larger version (95K): [in a new window]   Fig. 2. Attaching the nylon strap to the probe cross handle (A) using a Lark's head knot, and (B) directly to a probe, also using a Lark's head knot.

View larger version (137K): [in a new window]   Fig. 3. Connecting the probe and the soil puller. Note the under-wrap at the probe handle (Fig. 3A) which prevents slippage, and the incorrect over-wrap (Fig. 3B).

View larger version (150K): [in a new window]   Fig. 4. Extraction of the probe using a nylon strap (Fig. 4A) and with a chain (Fig. 4B) for deep soil samplers. Slight pressure with the thumb will assure that the chain grips the probe anywhere along the probe body.