GEC K8105GEC K8105
K 8105
MAGNETO WALL PATTERN
This instrument is intended to be used at the surface of a coal mine as a means of communication between the surface and an intrinsically safe underground system.
The cabinet is well seasoned oak with a compartment to hold two 1.5V dry cells. The equipment consists of a generator with an "Alnico" magnet system, polarised twin gong magneto bell and induction coil, safety shunt, capacitor and automatic switch-hook. The “Gecophone” hand-combination is fitted with a damp-proof cord. Terminals are provided for an extension bell. The circuit includes a safety shunt on capacitor.
Certification
Certificate of intrinsic safety No. T/TEL 17 certified by the Ministry of Power.
Dimensions
Dimensions in brackets are the equivalent in cm.
Height - 18.5 inches (47cm)
Width - 8.5 inches (22cm)
Depth - 6.75 inches (17cm)
Weight
20lb (9kg)
Cost in 1935 was £9.10.0
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| Front View | Internal View |
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Last revised: 06 August, 2007
FM2