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GE 60w frost from 1970

GE 60w frost from 1970

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Filename:image~405.jpeg
Album name:silverliner / Incandescent - General Service 25-100 watt
Keywords:Lamps
File Size:316 KB
Date added:Dec 16, 2017
Dimensions:1848 x 2464 pixels
Displayed:110 times
Exposure Bias:0 EV
Exposure Time:1/15 sec
FNumber:f 2.2
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Focal length:4.15 mm
ISO:100
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Powergroove
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Dec 17, 2017 at 08:06 PM Author: Powergroove
Great lamps. Wish this was still made. Didn't they use zinc shot to frost these?

Keep government out of the lighting industry.

ricksbulbs
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Dec 21, 2017 at 12:57 PM Author: ricksbulbs
Power Groove, they were a 2 step acid etching process invented by Marvin Pipkin in 1927. I have a 60 watt A-21 MAZDA with a C-9 filament from 1927 with an outside etch and dated 1927 on the etch that is a prototype he made. YES it is ultra rare, possibly the ONLY one in existence. The etch is worn but legible. In 1944-45 he developed the Q-Coat process for the emerging GE "White" lamps later known as soft white, and used step one of the acid etching process to make a light inside frosted bulb that was semi transparent but still frosted, and then applied a smoke-thin sprayed on coating of fused silica over it to make some of the most beautiful soft white bulbs in history! This was when GE had REAL engineers that cared and weren't designing LED bulbs on a computer, and not making any prototypes, ans putting the resulting (junk) product on the market with ZERO testing or R & D like they do today, or just re-branding one already in production in China and selling for a high price as a "GE". Those old GE's were good stuff back them and I was a little kid born in 1966, December 20th) but LIVED that era. And a bulb rated at 1000 hours lasted a couple years, today they can't manage ONE YEAR at that rating. I still find these oldies in basements, closets, attics, even bedroom lamps, still in use and still going strong! I usually grab them if I can get a replacement (NO LED TRASH!!!!!!!!!!!!!!!!) for them. But no they were not blasting etched but a 2 step (with 2 different strengths of acid) process, the initial etching makes the frosting, and the second rounds the points of the etches, makes the frosting more translucent and increases the strength of the glass. Some Q-Coat have a special light frosting, some have regular inside frost in the 2 steps with the smoke thin silica powder over that. Merry Christmas.
Powergroove
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Dec 21, 2017 at 02:39 PM Author: Powergroove
Thanks for the info ricksbulbs.

Keep government out of the lighting industry.





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Dec 21, 2017 at 02:46 PM Author:
Who's that furry person creeping into the shot there..?
Silverliner
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Verd a ray classic.


GoL
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Dec 21, 2017 at 03:24 PM Author: Silverliner
Ninja the cat.

May all the great lighting technologies have their place in history.

Administrator of Lighting-Gallery.net. Need help? PM me.





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Dec 21, 2017 at 03:25 PM Author:

Ninja the cat.


Cats are just little people in fur coats
Lumex120
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105555521242365640724 UCM30tBQDUECOV6VeG5W87Vg zfarmadillo
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Dec 21, 2017 at 03:35 PM Author: Lumex120

Cats are just little people in fur coats

Mine is a pig in a fur coat.

Any machine is a smoke machine if you operate it wrong enough.

ace100w120v
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Mar 30, 2019 at 02:08 AM Author: ace100w120v
Very nice find! So much better made than the junky halogens nowadays.
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