Auction Archive

 About this site
 Wanted to buy

bulb gallery

drawn tungsten
coiled tungsten
mini tungsten
pressed tung.
figural bulbs
christmas sets

neon lamps
argon lamps
xenon lamps
special mercury

plugs & fittings

tube gallery

 Box art

museum pics

 Dr. Hugh Hicks
Fort Myers, FL.


 Related links
 Submit a link


Author Topic: old discharge lamps of OSRAM PHILIP and Pintsch  (Read 17136 times)

Offline gruentine

  • New Member!
  • *
  • Posts: 1
old discharge lamps of OSRAM PHILIP and Pintsch
« on: May 12, 2005, 03:21:44 am »

I found three old lamps and put in with ebay. It is very interesting lamps. Best thanks for J.D. Hooker - on his internet page, I found two of the lamps.

This left to the lamps is:

I will answer inquiries gladly!

Offline Mónico González

  • Hero Member
  • ****
  • Posts: 146
  • Philips HP-80w Mercury Lamp
    • Mis Bombillas, peque?o museo virtual de la l?mpara el?ctrica.
Re: old discharge lamps of OSRAM PHILIP and Pintsch
« Reply #1 on: May 15, 2005, 07:36:18 pm »
What a cool lamps!
As a lover of genuine and pure mercury light, I'm very interested about all kind of non coated nor corrected mercury lamps, so, always is a true pleasure to watch any samples of these.
The first one of these lamps (Pintsch 500 HQ) are very similar to my Philips HP 80w, (the same as used as my avatar picture), unless that? Pintsh are 120 watts rated and fitted with three prong British bayonet cap.
Mines (I have two of them) has naturally, the regular Continental Europe E27 Edison screw, and are 80 watt rated.
Both lamp types are slightly different about arc tube constitution, because the Pintshc 500 HQ were manufactured many years before HP's.
The arc tube within my HP's are manufactured in the well known modern pressed ends system, using the standard quartz/molybdenum foil sealing method.
As can be seen at the picture of the Pintsch 500 HQ, at the lower left corner, the seals of the arc tube seems to be the same that those earlier quartz tubes used in 1930's - 1940's high pressure mercury lamps. It looks like if it were made by means of the older system based in the use of lead-in seals constituted by stacked glasses whose dilatation coefficients are decreasing from metal wire to equal those of the quartz, in the same way than in the "Philora" HP300.
Please, tell me if this are correct or I'm wrong.

I've included pictures of one of my highly appreciated Philips HP80 w, manufactured in late 50's or early 60's.
These mercury frosted bulbs were at service at my countryside home's street lamps from 1982 (when I purchased them as a retail store from a lighting and electrical supplier in Madrid) until 1988, when I substituted them by new-brand Philips HP's and Thorn-Emi MB-U's, clear ovoid types, also non corrected lamps, with the same spectral distribution too.
Today, these external lighting lanterns are fitted with cheaper but superb Chinese Luxman GGY 80 and 125 watts. clear ovoid mercury lamps that I bought in a huge quantity at last year. So, I can regard all the purity of mercury light ambiance colour at my countryside home's gardens without to sacrifice these old and highly collectible HP's.?

Thanks in advance and best regards,
M. Gonz?lez.
« Last Edit: May 16, 2005, 05:51:08 pm by M?nico Gonz?lez »

Offline Max

  • Sr. Member
  • ***
  • Posts: 72
  • 100W cleartop mercury lamp during run-up
    • the Lamp Review
Re: old discharge lamps of OSRAM PHILIP and Pintsch
« Reply #2 on: May 17, 2005, 03:16:03 am »
Hi gruentine and M?nico,

I do have a Pintsch 500HQ myself, and apart the power rating, the internal structure of this lamp is strikingly similar to Philips third generation HP made after the early 1940's. The way how the starting resistor is held by a third wire pressed in the stem, how the lamp frame is held by the glass tube soldered in the top part of the bulb make you really wonder if Philips did not produce these lamps at all.
The 500HQ burner features Philips' way of manufacturing as well. The seals are not of the graded type as used in the first two generations of HPs, but are of the vacuum-shrunk moly type instead. This technology was superseded by the full pinch seal in the 1950's when the fourth generation of HP were no longer made by hand.
Interestingly, the vacuum-shrunk seals where still employed in Philips' spectral lamps made in the Emmasingel factory until the late 1960's. Since these lamps where made in small series, there were no possibilities to employ the same production techniques as used in HP and HPL lamps. I have attached below such a (cadmium) lamp having the aforementioned type of burner.