Books dating old photos Chat onlysex

At Granville the lines to the south diverged, still following the railway, and at Parramatta the lines to the north branched off to follow the road.Few other telegraph routes had more than three wires.Since telephone poles never carried streetlights, this is a reliable indicator of the purpose.Electrical transmission is the use of high-voltage lines to carry bulk power from the generating point to sub-stations or pole transformers.The pattern which finally emerged was one with cables radiating from the G. As the cable network expanded the need for very large pole routes diminished and by 1905 nearly all telephone wires had disappeared from the streets of the city.A similar sequence was followed in the suburbs and country towns when the telephone spread to these areas.Because telephones and telegraphs in Australia were operated by the same authority, it is not always easy to differentiate between them on style alone. Electrical distribution to provide street or home lighting can be differentiated from telephone construction by its more robust appearance with heavier and more widely spaced wires.On telephone routes the separation between wires on crossarms was usually 15 cm to 20 cm and crossarms were 35 cm apart.

As a single wire could serve a dozen offices on an "omnibus" or "party" line, most routes had only one to three wires.Like other artefacts, the poles and wires which are seen on so many photographs of outdoor scenes can provide clues to the date on which the photograph was taken.Their value is greatest for the period from 1880 to about 1920, since before 1880 wires were rare and after 1920 the changing models of cars in streetscapes are usually a better dating guide.The only other use of wires is for electric trams and trains and it is unmistakable.The earliest wires erected were for telegraphs which started in New South Wales in 1858 (ref 1) with lines from a telegraph office in the Royal Exchange to South Head and Melbourne.

Leave a Reply