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End supports

End supports

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This image is of three types of Philips end supports used in SOX lamps around the 1970s. None of these lamps are badged as Philips. Thanks to James for the early 180W OSRAM lamp. This is a stunning lamp but it size makes it difficult photograph in full detail. The next two lamps are badged as Crompton, 135W followed by 35W

philips_construct.jpg Low Voltage UV.jpg small_stuff.jpg GEC_Na_s.jpg

Light Information

Light Information

Lamp Type:SOX
Wattage:180, 135, 35

File information

File information

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Album name:tuopeek / Low Pressure Lamps
File Size:151 KB
Date added:Nov 11, 2018
Dimensions:2000 x 1016 pixels
Displayed:86 times
Date Time:2018:11:11 10:53:49
DateTime Original:2018:11:11 11:36:28
Exposure Bias:0 EV
Exposure Time:1/250 sec
FNumber:f 5
Flash:No Flash
Focal length:27 mm
Model:NIKON D3400
Software:Adobe Photoshop Elements 2.0
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Nov 11, 2018 at 10:32 AM Author: Danny
Lovely those Old lamps were made really well!

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Tuopeek-475652085781113 tuopeek1 77334065@N05/
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Nov 11, 2018 at 03:51 PM Author: tuopeek

Lovely those Old lamps were made really well!

yeah, works of art, a lot of attention to detail in these old lamps.

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Nov 11, 2018 at 03:58 PM Author:
The older 180w sox lamps with the metal internal supports make nice noises when warming up,my oldest 180w dates to 1984.
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Nov 11, 2018 at 05:42 PM Author: James
That shows the evolution really clearly. The Osram Na180W-4 from 1969 at left is the oldest but also the weakest - the places where the metal strips are bent at 90d are a weak spot. The corners of the bends tend to raise outwards slightly and risk scratching the inner surface of the glass outer jacket which can become weakened and crack.

The later lamps keep the bends away from any glass surfaces and eliminate this problem.

The one in the centre is the newest, in which the contact points against the U-bend have been minimused by using a larger radius for the reverse curls.
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