Colored glass tubes question

Colored glass tubes question

Post by Ed Wagn » Sun, 08 Sep 2002 19:53:09



I was looking at a few old tubes I had stored away long ago tonight
and ran across 4 old 1920's type tubes ( I believe two 24's and two
27's). They all had colored glass ( all blue).

Anyways, does anyone have the history on why these tubes glass was
colored (just a marketing thing?), were there other colors besides
blue? Are they very rare? Just a curiosity question.
Thanks,

Ed

 
 
 

Colored glass tubes question

Post by DumpsterDive » Sun, 08 Sep 2002 22:35:12


I think they must have anticipated the Ebay market for blue (and gold too)
tubes.

Personally, I have never understood why folks are willing to pay such a
premium for tubes that are typically used in sets where they are hidden from
view inside the cabinet.  If they were used in "breadboard" or other
exposed-tube sets, I could understand paying more, but I have never seen a
set in which #80's, 27's 24's, etc. are visible (at least not in normal
operation).
----------------------------------------------------------------------------
--------------------------------------------------------------

Quote:
> I was looking at a few old tubes I had stored away long ago tonight
> and ran across 4 old 1920's type tubes ( I believe two 24's and two
> 27's). They all had colored glass ( all blue).

> Anyways, does anyone have the history on why these tubes glass was
> colored (just a marketing thing?), were there other colors besides
> blue? Are they very rare? Just a curiosity question.
> Thanks,

> Ed


 
 
 

Colored glass tubes question

Post by Ken » Sun, 08 Sep 2002 23:30:26


I have a couple O1A blue tubes that can be used ``in sight`` i guess .
they pay a premium because they have money to throw away just like the
catalin buyers `colored plastic`  
 
 
 

Colored glass tubes question

Post by Steve Kels » Sun, 08 Sep 2002 23:39:25


   In the 70's, I came across an unusual Marigold colored glass 20's
tube - it was round, a brass base, 4 short pins, an exhaust tip, was a
triode and had a strange Marigold color deposit on the inside of the
glass, the highest intensity color being opposite the crudely made
anode, which was horizontally mounted in the tube.  (I figured some
chemical, possibly a getter, was boiled off the filament).  I think
there was a brand name, something like: "Vac-U- Bulb" embossed in the
brass base.  Anyway, some radio collector hotfooted over to my house and
forked over $25 bucks for the thing - the filament was intact and I
offered him a continuity check, but he was not interested in the good
filament, all he wanted was the strange colored glass tube.

                                                                Steve

 
 
 

Colored glass tubes question

Post by Art » Mon, 09 Sep 2002 00:28:33


Don't know about rarity but I've seen several gold/orange colored tubes
and one green tube.  These were in a museum and I don't remember the
brand names.  I have some blue Arcturus (sp?) tubes.  Don't use
them....just look at them.
Art
Quote:
> *************************************
>  were there other colors besides blue? Are they very rare? Just a
> curiosity question.

 
 
 

Colored glass tubes question

Post by Kenneth Schar » Mon, 09 Sep 2002 01:29:34


Quote:

> Don't know about rarity but I've seen several gold/orange colored tubes
> and one green tube.  These were in a museum and I don't remember the
> brand names.  I have some blue Arcturus (sp?) tubes.  Don't use
> them....just look at them.
> Art

> > *************************************
> >  were there other colors besides blue? Are they very rare? Just a
> > curiosity question.

The blue glass was a marketing gimmick by Arcturus.  The blue glass cost
them a little more to make but had become a trademark of the Arcturus
tubes.  In the end they went to clear glass to save money, but etched the
word "blue" on the glass!
 
 
 

Colored glass tubes question

Post by John Goller, k9u » Mon, 09 Sep 2002 03:24:06



Quote:
> *************************************
>>  were there other colors besides blue? Are they very rare? Just a
>> curiosity question.

Although not into tube collecting...I have an AK-10 breadboard...so have
been sort of paying attention to tubes found in boxes for a few nice
colored ones to put in the AK-10 ......but not enough interested to be
paying any premuim for them.....
John k9uwa
 
 
 

Colored glass tubes question

Post by Adria » Mon, 09 Sep 2002 03:52:48



Quote:
> I think they must have anticipated the Ebay market for blue (and gold too)
> tubes.

> Personally, I have never understood why folks are willing to pay such a
> premium for tubes that are typically used in sets where they are hidden
from
> view inside the cabinet.  If they were used in "breadboard" or other
> exposed-tube sets, I could understand paying more, but I have never seen a
> set in which #80's, 27's 24's, etc. are visible (at least not in normal
> operation).

<slightly OT>
Interestingly enough, there are blue and red coloured versions of both the
KT88 and EL34 audio tubes available from JJ in Czech Republic - look real
nice on a tube amp

Adrian

 
 
 

Colored glass tubes question

Post by wall » Mon, 09 Sep 2002 10:56:57


Quote:

> I was looking at a few old tubes I had stored away long ago tonight
> and ran across 4 old 1920's type tubes ( I believe two 24's and two
> 27's). They all had colored glass ( all blue).

> Anyways, does anyone have the history on why these tubes glass was
> colored (just a marketing thing?), were there other colors besides
> blue? Are they very rare? Just a curiosity question.
> Thanks,

> Ed

You really need to check out "kilokats antique lightbulb site". There
is a section devoted to just antique tubes before 1930. It looks like
tubes came in some different colors including blue and yellow. I have
not learned to put up links to other web sites on this message forum
so you'll have to search for it on Google. It's easy to find and lots
of neat stuff on there.
 
 
 

Colored glass tubes question

Post by Chris Nystro » Mon, 09 Sep 2002 11:37:56


(snip)

Quote:
"wally" wrote...
> You really need to check out "kilokats antique lightbulb site".

http://www.bulbcollector.com/

Chris

 
 
 

Colored glass tubes question

Post by John Goller, k9u » Mon, 09 Sep 2002 13:46:12




Quote:

>I have
>not learned to put up links to other web sites on this message forum

Majic Keys to remember on your computer......

Highlight an area you wish to copy with the mouse....including the URL address
of the web site you are on......and hit Control key and "C" at same time...
that "Copies" the highlighted info into your puter......
then you go where you want to deposit that information....like into this
newsgroup..... and hit Control "V" ......

Neat Tubes!

John k9uwa

 
 
 

Colored glass tubes question

Post by Fulano de Ta » Mon, 09 Sep 2002 14:38:19


Quote:
> Majic Keys to remember on your computer......

> Highlight an area you wish to copy with the mouse....including the URL address
> of the web site you are on......and hit Control key and "C" at same time...
> that "Copies" the highlighted info into your puter......
> then you go where you want to deposit that information....like into this
> newsgroup..... and hit Control "V" ......

Or left mouse click on the URL, copy, then right mouse click, paste into
your text...for mouse users.

-BM

 
 
 

Colored glass tubes question

Post by Ed Wagn » Mon, 09 Sep 2002 15:30:09


Thanks for the info. I wondered when I first bought them if there were
other colored glass tubes put out on the market.

Quote:
>Don't know about rarity but I've seen several gold/orange colored tubes
>and one green tube.  These were in a museum and I don't remember the
>brand names.  I have some blue Arcturus (sp?) tubes.  Don't use
>them....just look at them.
>Art

>> *************************************
>>  were there other colors besides blue? Are they very rare? Just a
>> curiosity question.

 
 
 

Colored glass tubes question

Post by Ed Wagn » Mon, 09 Sep 2002 15:32:04


On Sat, 07 Sep 2002 12:29:34 -0400, Kenneth Scharf

Marketing!!!! OK, I thought it must be something like that. I have no
interest in selling mine and just thought back 10 yrs ago when I
bought them they looked kinda cool looking. Thanks again for the info.
Ed

Quote:

>> Don't know about rarity but I've seen several gold/orange colored tubes
>> and one green tube.  These were in a museum and I don't remember the
>> brand names.  I have some blue Arcturus (sp?) tubes.  Don't use
>> them....just look at them.
>> Art

>> > *************************************
>> >  were there other colors besides blue? Are they very rare? Just a
>> > curiosity question.

>The blue glass was a marketing gimmick by Arcturus.  The blue glass cost
>them a little more to make but had become a trademark of the Arcturus
>tubes.  In the end they went to clear glass to save money, but etched the
>word "blue" on the glass!

 
 
 

Colored glass tubes question

Post by Ro » Tue, 10 Sep 2002 01:33:48


Quote:

> Personally, I have never understood why folks are willing to pay such a
> premium for tubes that are typically used in sets where they are hidden from
> view inside the cabinet

Use this URL to see the reason I looked long and hard and paid
soem "big bucks" for Gold colored tubes.

http://RadioHeaven.homestead.com/GlassSet.html

And to the guy that sold the "Vac-O-Bub" for $25 bucks,
too bad you didn't hang on to it longer, cause they're worth
about $200 now.

73, and happy collecting.

Ron

C.R."Ron" Lawrence OF, KC4YOY

Antique Radio Collector & Historian,
Visit my radio collection, -Radio Heaven-
http://www.radioheaven.homestead.com/displayroom.html


Snail mail- POBox 3015
            Matthews, NC 28106

704-289-1166 (home)

Visit the Carolinas Chapter of the AWA(CC-AWA)web page,
http://www.cc-awa.org