| Description |
Thrust Borer, Hydraulic No. 1 |
| Manufacturer |
|
| Model |
|
| Type |
|
| Use |
For boring underground holes |
| Fleet Number |
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| Date of picture |
1967 |
THRUST BORER, HYDRAULIC
Application
For laying underground cables, wrought-iron pipes, or asbestos-cement ducts
where it is desirable not to disturb expensive pavements or road surfaces.
General description
The device consists of a hydraulic boring machine, hydraulic pump, boring rods,
enlarging heads and various adaptors, all housed in three weatherproof boxes for
ease of transportation. Rods, enlarging heads (up to 8 and 1/2in. diameter) are
provided to give a maximum boring length of 60ft. but 40ft. is generally
considered a suitable length. A safety valve is provided in the hydraulic system
which operates at 2 tons/sq. in. to ensure that the equipment suffers no undue
stress. The boring machine is fitted with a forward, neutral and reverse
position lever, and it is possible to engage any one of three gears in either
direction of thrust.
Types in use
Mangall Irving - Hand operated.
E. Pass - Hand operated
E. Pass - mechanically operated
Capital cost
£680.
Remarks
A full knowledge of other underground services is necessary before commencing
boring operations.
The device is for use in loam or clay free from rock, large stones and tree
roots.
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