- Email: [email protected]
Three-tier wire and netting dispenser
J. ugric.Engng Res.(1970)15 (3) 314-3 I6
Three-tier
Wire and Netting
Dispenser
R. E. STICKLAND" 1.
Introduction
A technique for erecting fences using two or three strands of high tensile spring steel galvanized wire (90 ton/irP) has recently been developed which, because of its cheapness, has been widely used in the Forestry Commission in place of fences made from mild steel galvanized wire.‘, 2 Both types of fence use galvanized wire netting. To speed up operations on fencing in terrain where a vehicle can traverse the fence-line it was felt that a three-tier dispenser would have advantages over the single reel dispenser commercially available, and that if the basic unit could also be adapted to dispense the wire netting, this would be an added advantage. 2.
Operation
The three-tier dispenser has to be mounted on a vehicle. The wire can then be dispensed by driving the vehicle along the fence-line or, on difficult ground, by pulling the wire out by hand whilst the vehicle remains stationary. Most of the fencing used consists of two or three strands of H.T.S.S. galvanized wire supporting the galvanized wire netting, but this unit can be used as a single reel dispenser if necessary. Where possible the wires are dispensed and the materials, such as posts, strainers etc., distributed along the fence-line at the same time as the fence is put up. Where the ground is difficult and materials are pre-delivered from a specialized vehicle, the line wires can be dispensed at the same time provided that the exact line of the fence can be traversed. Subsequent crossing of the dispensed line wires with any form of vehicle is avoided. The netting dispenser can only be used from a moving vehicle as it is impracticable to drag the wire-netting over the ground. 3.
Construction
A commercial single reel unit had given good service and the overall sizes of the three-tier unit are similar; all three reels are able to rotate independently. Fig. I shows the assembled unit.
Fig. 1. The assembled *Forestry
Commission
Research
Division,
Alice
Holt
Lodge,
Wrecclesham,
314
dispenser Farnham,
Surrey
316
THREE-TIER
WIRE
AND
NETTING
DISPENSL:R
Fig. 2 is a sketch of a cross-section
through the unit showing its construction. The main column The dimension of the collars B and C and A is of mild steel tube 12 in o .d ., 4 in wall thickness. the centre section of frames of D and E were chosen to give adequate clearance with a minimum amount of machining. The bearing pads J are made from &in thick polythene sheet and the cross-section area of the three bearings are reasonably constant. To prevent the wire “snatching” whilst it is being unreeled there is a guide post with nylon guides H for either left-hand or righthand dispensing. Acknowledgement Thanks are due to L. A. Tee of the Mammals the problem and testing the experimental model.
section
of the Research
Division
for defining
REFERENCES
Rowe, J. J. Research on fencing for forest protection. 2 Sidaway, R. M. New fencing techniques in forestry. I
Deer, 1969, 1,419 Timb. Trades J. 1968, Supplement 45
Three-tier
Wire and Netting
Dispenser
R. E. STICKLAND" 1.
Introduction
A technique for erecting fences using two or three strands of high tensile spring steel galvanized wire (90 ton/irP) has recently been developed which, because of its cheapness, has been widely used in the Forestry Commission in place of fences made from mild steel galvanized wire.‘, 2 Both types of fence use galvanized wire netting. To speed up operations on fencing in terrain where a vehicle can traverse the fence-line it was felt that a three-tier dispenser would have advantages over the single reel dispenser commercially available, and that if the basic unit could also be adapted to dispense the wire netting, this would be an added advantage. 2.
Operation
The three-tier dispenser has to be mounted on a vehicle. The wire can then be dispensed by driving the vehicle along the fence-line or, on difficult ground, by pulling the wire out by hand whilst the vehicle remains stationary. Most of the fencing used consists of two or three strands of H.T.S.S. galvanized wire supporting the galvanized wire netting, but this unit can be used as a single reel dispenser if necessary. Where possible the wires are dispensed and the materials, such as posts, strainers etc., distributed along the fence-line at the same time as the fence is put up. Where the ground is difficult and materials are pre-delivered from a specialized vehicle, the line wires can be dispensed at the same time provided that the exact line of the fence can be traversed. Subsequent crossing of the dispensed line wires with any form of vehicle is avoided. The netting dispenser can only be used from a moving vehicle as it is impracticable to drag the wire-netting over the ground. 3.
Construction
A commercial single reel unit had given good service and the overall sizes of the three-tier unit are similar; all three reels are able to rotate independently. Fig. I shows the assembled unit.
Fig. 1. The assembled *Forestry
Commission
Research
Division,
Alice
Holt
Lodge,
Wrecclesham,
314
dispenser Farnham,
Surrey
316
THREE-TIER
WIRE
AND
NETTING
DISPENSL:R
Fig. 2 is a sketch of a cross-section
through the unit showing its construction. The main column The dimension of the collars B and C and A is of mild steel tube 12 in o .d ., 4 in wall thickness. the centre section of frames of D and E were chosen to give adequate clearance with a minimum amount of machining. The bearing pads J are made from &in thick polythene sheet and the cross-section area of the three bearings are reasonably constant. To prevent the wire “snatching” whilst it is being unreeled there is a guide post with nylon guides H for either left-hand or righthand dispensing. Acknowledgement Thanks are due to L. A. Tee of the Mammals the problem and testing the experimental model.
section
of the Research
Division
for defining
REFERENCES
Rowe, J. J. Research on fencing for forest protection. 2 Sidaway, R. M. New fencing techniques in forestry. I
Deer, 1969, 1,419 Timb. Trades J. 1968, Supplement 45