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ilp archive : journals
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public lighting no. 6 vol. 2
June 1937
- Editorial p43
- Publicity vs. Visibility
- Description of the problem posed by Cold Cathode type lighting i.e. Neon Signs, which
have been brought into extensive use. Such installations have conflicted with traffic lights
causing potential danger to drivers and pedestrians. The question has now been raised officially
by Middlesex County Council. From the reply from the Minister Of Transport
it "would appear that the provision in section 48 of the Road Traffic Act, 1930, does
not empower local authorities to refuse permission to exhibit illuminated advertisements
on the ground of conflict with traffic signs." The Association of Municipal Corporations and
the Metropolitan Boroughs Standing Joint Committee propose to approach the Ministry Of
Transport with a solution to the problem; Side Streets And Main Roads: Passage from
bright main road to darkish light of side sreet has been found to have an injurous effect on the
health of drivers. Many local authorities can only afford a form of lighting which is of benefit
to pedestrians. There have also been objections to the colour of lamps - but does this really
matter when the pedestian can be seen by the driver? Visibily is the most important factor;
Thirty Mile Limit Signs: It is difficult to see the reflective 30-mile limit
signs as they are positioned on the side of the road in the dark. It has been suggested that these
signs would be more effective if suspended over the roadway. (Includes pictures of illuminated
speed-limit and directional signs over a roadway); Dotted here and there: a comment
on some county lighting where a local engineer stated that his lighting was "dotted here and there."
"He admitted that it was not uncommon to find cases where half the light from a lamp
placed on the footpath on the outskirts of town was lost in an ajoining field, while the far
side of the road was quite dark. One of his listeners opined that if road lighting is not
very good it was better to have none at all."
- Lighting: Social Comment, Lighting: Legal, Lighting: Health
- Illuminated Advertisements p45
- Full details of the communications between The Law Committee of The Association of Municipal Corporations
and The Ministry Of Transport concerning the interference of cold-cathode illuminated adverisments and traffic signals.
The council were not happy with the MOT's reply and wanted further action to be taken to secure
the necessary legislation giving highway authorities power to
control the erection of adverisements signs.
- Lighting: Legal
- Bishops Stortford New Lighting p45
- Full details of the Bishops Stortford lighting.
- Lighting: Installations
- Sieray QH - H.P. Mercury Type Lamps p46
- Announcement has been made of a new type of high pressure mercury electric
discharge lamp, the Sieray QH Lamp, in two sizes. The inner
tubes are made of a special grade of quartz premitting their being run at
higher working pressures than is possible with the hard glass used for the
older lamps. The increased pressure results in the attainment of higher
efficiencies than can be obtained with hard glass lamps. The quartz tubes
are enclosed in pearl finished outer bulbs of the type used for tungsten
filament lamps.
- The arc light source is short and very concentrated.
- The time taken to reach full luminous output is shortened considerably.
- The cooling time after switching off and consequently the lapse in
time before restriking are considerably reduced.
- The lamps can be used effectively in standard types of fitting designed
for use with gas filled lamps. It will be possible to use the new lamps in
existing fittings.
- They are fitted with a special 3BC bayonet cap to prevent accidential
insertion into a holder wired for tungsten filament lamps.
- Lighting: Lamps
- Gas And Coke Company p46
- Details of the various installations administrated by
The Gas Light And Coke Company including Westminster, Chelsea
and Hendon. New installations conform to BS 307:1937 or the MOT Committee's
recommendations but some boroughs have their own specifications ranging
from Class E and Class D for main streets, Class F for arterial roads
and Class G for residential areas. There has been an increasing use of
refracting glassware and multi-factet reflectors. Hot platinum coil ignition
is used. Gas-lighted guard posts and traffic signs to MOT requirements
are also being widely employed. Photometeric testing is carried out
regularly every week and a large amount of testing is carried out
by Watson House Research Laboratories. Tests in roughly 40 streets are
made each week, about half the tests being for test point and maximum
illumination, and the remainder for candle power at fixed angles. At
Watson House Laboratories, complete tests of various units are made, and
installations are planned from the data obtained.
- Lighting: Installations
- The 1937 Conference Folkestone by HOD p47-p48
- Details of the forthcoming conference.
- APLE: Conference
- Coronation Booklet p48
- The British Electrical Development Association
has issued a souvenir
booklet for childen commemorating the Coronation of King George VI and
Queen Elizabeth. It traces the history of light and illumination.
- Lighting: Publications
- APLE Conference p49-p50
- Pictures of the key people who will be attending or giving papers
at the conference.
- APLE: Conference
- Sodium Lighting At Hove, Sussex p51
- Full details of an installation in Hove, Sussex.
- Lighting: Installations
- Street Lighting At Wembley p52
- Full details of an installation in Harrow Road, Wembley.
- Lighting: Installations
- The Tribute Of Light p52, p57
- Argues that some of the temporary floodlighting schemes erected for the
coronation should be made permanent as a tribute to the King. "It is a wonderful
idea. It will provide more employment for our workers; it will symbolise the
inauguration of a new era of progress as nothing else could; it will permanently
improve the streets, roads and buildings of communities that have chosen this means
of celebrating the Coronation." Very much written to promote electricity.
- Lighting: Events, Lighting: Installations
- Coronation Floodlighting p54
- "Gas and Electricity Tranform Public Buildings throughout the land"
Supplimentary four page booklet of black and white photographs of various floodlighting
schemes to mark the coronation.
- Lighting: Events, Lighting: Installations
- Improved Street Lighting In Southport p57
- Full details of a gas installation in Southport.
- Lighting: Installations
- Improved Street Lighting In Lambeth p58
- Full details of an electric discharge installation in Lambeth.
- Lighting: Installations
- Permanent International Association Of Road Congress p58
- Details of the Eighth International Road Congress which will be held in The Hague, Netherlands
from June 19th to July 2nd, 1938.
- Other
- Gas Lighting For Coronation p58
- Further details of gas floodlighting schemes which were temporarily erected for
the Coronation. Over 100 gas undertakings carried out special lighting for the event. In
many towns the street lamps were lit on Coronation night free of charge to the public.
- Lighting: Events, Lighting: Installations
- The New Osira Lamps p59
- New Osira 80W and 125W High Pressure (H.P.) Mercury Vapour Electric
Discharge Lamps have been designed and developed by the GEC for industrial
and street lighting. Thye have an extrememly high efficiency and give a light output
three times as great as that of tungsten filament lamps. Their introduction now marks
a complete range of lamps which will match up side roads with main and secondary rods.
The lamps are similar in shape to the 150W and 200W tungsten filament pearl lamps
and can be used in ordinary Gecoray Reflectors and enclosed pendant fittings.
The only difference is that they have a 3-pin bayonet cap. Includes information
about the new Di-Fractor lantern.
- Lighting: Lamps
- Science Museum, S. Kensington p59
- Brief notes about a paper given at the museum in connecion with
the Electric Illumination Exhibition by Mr. Lennox,
President of the APLE. The following
points were made:
- The country spends five million pounds a year on street lighting.
- The insurance companies spend twenty-five million per year on road accident claims.
- 56%-58% of accidents in winter months occur during darkness. Roads must be lighted
that adequate visibility for quick perception is provided at 45 miles per hour,
without the use of headlights.
- A motorist travelling at 45 miles per hour has only 1½ seconds which
to see and avoid any obstruction 100 yards ahead.
- Objects more than 15 feet distant are normally seen as dark objects against
a light background.
- The nature of the road surface has a very important bearing on the
design of the street lighting installation.
- Both sides of straight roads should be provided with street lamps. Curved
roads should be lighted by lamps on the outside of the bends.
- Statistics: Road Data
- Street Lamps As Warning Signs p59
- A town in the Midlands is using an experimental street lighting system on a large
scale where the streets will be illuminated by mercury vapour lamps and crossways and
corners illuminated by sodium lamps. As a result of previous experiments with a system
of this nature, the RAC took up the matter with the
Ministry Of Transport, suggesting if it approved the principle
of indicating danger points by street lighting of contrasting colours, a standard method
could be universally adopted through the country. The Minstry referred the
matter to the Departmental Committee on Street Lighting
- Lighting: Colour, Lighting: Installations
- Low Wattage Madza Mercra Lamps p60
- Originally developed in 400W only and found application in street lighting,
industrial lighting and floodlighting. Almost immediately it was felt that lower wattage
lamps were needed for less important roads and 150W and 250W versions were produced. 80W
and 125W Mazda Mercra lamps have now been introduced which
are particularly suitable for the lighting of side streets. The lamps are housed in bulbs
the same shape and size as standard gas-filled lamps, and can be used in equipment designed
for 150-200W gas-filled lamps. Running up time and cooling times are reduced, and the
new lamps can be run in any position. The three-pin bayonet cap prevents the lamps from
being accidentally inserted in an ordinary lampholder. BTH chokes are
required and condensers can be used to improve the power factor. The BTH
County Junior general purpose lantern has be introduced for this lamp.
- Lighting: Lamps
- Well-Lighted Refuges p60
- Details of the Cornolith pre-cast concrete island refuges by
Johnston Brothers Limited. Their appearance almost exactly resembles granite.
- Other
- Street Lighting in Edinburgh by W. J. Wilson p61
- Details of new electric installations
(including Mercury Vapour Discharge and gas-filled tungsten) and an experimental
high-pressure gas system.
- APLE: Installations
- Newly Elected Members p62
- Newly elected members, junior members and associates.
- Lighting: Personnel, APLE: Organisation
- Correspondence p62
- In a letter entitled Gorgonzola Lighting,
A Lay Reader where they complain about the greenish glow
of medium-pressure mercury discharge lighting. "Psychologically,
thsi has a very disturbing effect upon one's mentality, while facially
it produces a horrible distortion." The reply from the editor
notes that personal appearances are only secondary over the actual
lightign of the road surface giving safety to the road user;
J. F. Colquhoun (Sheffield Lighting Engineer) draws
reader's attention to the new British Standard Specification for
Tungsten Filament General Service Electric Lamps.
- Lighting: Colour
- Parliament Square Lighting p62
- Small footnote mentioning that the lighting levels in Parliament Square will
be increased for the Coronation.
- Lighting: Installations, Lighting: Events
- Gas Lighting In Lambeth p63
- Full details of a high-pressure gas installation in Lambeth.
- Lighting: Installations
- Gas Supplies In Air Raids p63
- Gas undertakings had been invited to consider means of maintaining an uninterrupted
gas supply for lighting, heating and other purposes in the event of enemy attacks. The
Institution Of Gas Engineers had set up a committee (the Gas Works Safety Rules Committee)
to consider the problem. The Instutution had been in touch with the Home Office
on the question of maintaining street lighting during aerial attacks. No definite
policy had been formulated so far by the Department, but it had been
widely assumed that some form of instantaneous extinction of steet lights might
be required.
- Lighting: Installations, Lighting: Control
- Promenade Lighting At Aberystwyth p64
- Full details of a REVO installation in Aberystwyth.
- Lighting: Installations
- Parliament In A New Light p64
- Details of the floodlighting of the Terrace of the Houses Of Parliament
for the Coronation. The installation was planned by Siemens Electric Lamps and Supplies, Ltd.
in conjunction with H.M. Office Of Works. Also lists other
London buildings which were floodlit.
- Lighting: Installations, Lighting: Events
- A Visit To The Mazda Lamp Works p64
- Details of a day spent at the BTH works in Rugby. The visit
included the factory where tungsten filament lamps were made - development
has been principally along the lines of increasing efficiency and
life uniformity, and the greatest advance has been the introduction of
the coiled-coil filament, which has increased the efficiency by 20%.
The article also notes the manufacture of the high pressure Mercury Discharge
Lamp, originally in 400W, 250W and 150W wattages, and recently in
80W and 125W wattages. The latter lamps are made in quartz. All the glass
bulbs are produced at the BTH glass works at Chesterfield.
- Lighting: Lamps, Lighting: Manufacturers
- Street Lighting Notes p65
- Brief details of various installations.
- Lighting: Installations
- Illuminated Playground For Childen p67
- Brief details of the children's playground in Bartholomew Square, London
which has been equipped with 400W mercury discharge lamps moutned on
double arm standards at a height of 25' and a spacing of 20'.
- Lighting: Installations
- Gas Illumination p67
- A new device for ornamental gas lighting which is a novel type
of gas mantle which may be used without protection from the weather.
When first lighted the mantle shrinks rapidly into a small hemispherical
source of light of great brilliancy. Straight or curved tubes fitted
with these mantles can be made into letters or designs or used
to outline architectural features. Their cost is low and their average
life is over 100 hours.
- Lighting: Lamps
- Trade Note p67
- Foster And Pullen, Ltd.
following the precedent of the Jubilee in 1935, closed their works
on Coronation Day, the workpeople being given a holiday on full pay.
- Lighting: Manufacturers, Lighting: Events
- Floodlighting the King's Palaces p67
- Details of the floodlighting of Buckingham Palace (100 1000W GEC floodlights)
and Windsor Castle.
- Lighting: Installations, Lighting: Events
- Royal Telegram p67
- "The King and Queen are much gratified to receive your message
of congratulations on the occasion of ther Majesties' Coronation. I am desired
to express their warm thinks to all who joined in these good wishes." - Private Secretary
- Other
- The Late Robert Beveridge p67
- Obituary of Robert Beveridge, previous chief of the
Public Lighting Department of Edinburgh and President of the Association
in 1931-1932.
- Lighting: Personnel
- Bournemouth's New Street Lighting p68
- Full details of a Siemens electrical installation
in Bournemouth.
- Lighting: Installations
- Lighting Improvements In Bolton p68
- Full details of a REVO electrical installation
in Bolton.
- Lighting: Installations
- Adverts:
British Commercial Gas Association,
William Sugg And Co., Ltd.,
Walter Slingsby and Co., Ltd.,
Siemens Electric Lamps And Supplies Ltd.,
The British Thomson-Houston Co. Ltd.,
Gowshall Ltd.,
Gas Meter Company,
Foster And Pullen Ltd.,
Bromford Tube Co., Ltd.,
The Horstmann Gear Co., Ltd.,
Concrete Utilities Co., Ltd.,
Radiovisor Parent Ltd.,
Public Works Road And Transport Exhibition And Congress,
James Keith And Blackman Co., Ltd. and
British Electrical Development Association, Inc.
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