Communication Systems

Colliery Surface Table Telephone

Colliery Surface Table Telephone. A miners table telephone with a crank handle, used for surface to underground or surface to surface communication. The front label states how to use the phone as follows – To call turn handle and lift handset… When finished replace handset and turn handle. The back of the telephone has a makers plate (as seen above) ... Read More »

Portable Mining Magneto Telephone

Portable Mining Magneto Telephone. A portable mining magneto telephone. Made by Ericsson. Type N-1834. Made from mahogany wood and iron. Size 12″ x 7″ x 5″ inches. Dated 1940. This telephone unit has an Ever Ready 3 volt battery incorporated into the back of the unit and a detachable winding key that can be inserted into the body through a ... Read More »

Portable Mining Magneto Telephone

Portable Mining Magneto Telephone. A later portable mining magneto telephone. Made by Ericsson. Type N-1846. Made from tin and bakelite. Size 10″ x 6″ x 5″ inches. Dated 1948. This telephone unit has its winding key integrated into the body.  Read More »

Colliery Tannoy – D.A.C.

Colliery Tannoy – D.A.C.  A D.A.C. armoured colliery tannoy. Manufactured by Stedfast Electrical Controls Ltd. Hucknall, Nottingham, England. Model SA-1. Made from iron, steel, rubber and brass. Size 10″ X 7″ X 6″ inches. Date 1970’s-1980’s. These tannoys were known as dacs and were located at all major transfer points, headings and coal faces etc and used for communication between ... Read More »

Colliery Tannoy – D.A.C.

Colliery Tannoy. An armoured colliery tannoy. D.A.C. Mini-Amp type B.M.A. Derby Automation Consultants Ltd, Burton-On-Trent, Staffs. Made from iron, rubber and brass. Size 11″ x 7″ x 6″ inches. Date 1970’s-1980’s. These tannoys were known as dacs and were placed at all major transfer points, headings and coal faces etc and used for communication between such places and the surface ... Read More »

Colliery Tannoy – D.A.C.

Colliery Tannoy. An armoured colliery tannoy. D.A.C. Mini-Amp type MA/MI. Derby Automation Consultants Ltd, Burton-On-Trent, Staffs. Made from iron, rubber and brass. Size 9 1/2″ x 4″ x 6″ inches. Date 1980’s-1990’s. These tannoys were known as dacs and were placed at all major transfer points, headings and coal faces etc and used for communication between such places and the ... Read More »

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