ATM TELEPHONE T.3030 & T.3031
|MINE TELEPHONES AND SIGNALLING APPARATUS
A.T.M. MAGNETO MINE TELEPHONES
Of robust and compact design, embodying all the latest and most approved features, and conforming to Coal Mines Regulations.
Broad machine-faced flanges on the cast-iron case and cover, render the telephone flame-proof, whilst the cover is secured by triangular-headed bolts, only removable with the special key illustrated.
The cover is bodily detachable without disturbing fixed electrical connections.
A five-magnet generator is fitted, and the telephone is adapted for bridging work. The generator mounting is adjustable for accurate alignment with the driving handle, which is counterbalanced.
The loud-speaking receivers are metal cased, and the connecting cords protected by braided steel armouring, securely anchored to glands at either end.
The polarized magneto bell is housed in a separate compartment, and can be removed without disturbing fixed connections.
All components are readily accessible for inspection, adjustment, or removal, and the electrical insulation throughout is of a high order.
A box spanner, to fit the triangular headed fixing bolts, is supplied with each telephone.
Can be fitted with armoured cable glands if required.
T.3031 - L.11205 (Two Receivers)
T.3030 - L.11204 (One Receiver)
Last revised: October 06, 2012