Gallery of Lights


Home Login
Album list Last uploads Last comments Most viewed Top rated My Favorites Search
Home > User galleries > basilicon89 > Misc. Signal-Related
Return to the thumbnail page FILE 353/20293 Return to start See previous file See next file Skip to end
Three generations of Eagle's DURASIG model. Left to right: 1st Generation DURASIG. 1973-1981. Aluminum reflectors mounted to door, caused heat issue burning the lens. Visors locked in with short tabs/slots Not quality plastic. 2nd Generation DURASIG. 1981-1993. Door reflectors replaced with plastic ones mounted in the body. Visor tabs lengthened and notched to prevent breakage. Better quality plastic. 3rd DURASIG. 1993-Present. Following Eagle Signal's merger with LFE/Automatic Signal, the signal was redesigned to be interchangable with LFE's plastic signal. Plastic reflectors replaced with metal ones. Doors redesigned to accept the standard screw on visor that LFE used. Much better quality plastic! Keywords: Traffic_Lights

Three generations of Eagle's DURASIG model.

Left to right:

1st Generation DURASIG. 1973-1981. Aluminum reflectors mounted to door, caused heat issue burning the lens. Visors locked in with short tabs/slots Not quality plastic.

2nd Generation DURASIG. 1981-1993. Door reflectors replaced with plastic ones mounted in the body. Visor tabs lengthened and notched to prevent breakage. Better quality plastic.

3rd DURASIG. 1993-Present. Following Eagle Signal's merger with LFE/Automatic Signal, the signal was redesigned to be interchangable with LFE's plastic signal. Plastic reflectors replaced with metal ones. Doors redesigned to accept the standard screw on visor that LFE used. Much better quality plastic!

McCain.jpg eaglelux.jpg DURASIG.jpg 031617_001.JPG 031617_007.JPG
File information
Filename:DURASIG.jpg
Album name:basilicon89 / Misc. Signal-Related
Keywords:Traffic_Lights
Filesize:32 KiB
Date added:Feb 09, 2011
Dimensions:777 x 364 pixels
Displayed:237 times
URL:http://www.galleryoflights.org/mb/gallery/displayimage.php?pid=5007
Favorites:Add to Favorites

Comment 1 to 6 of 6
Page: 1

rjluna2   [Feb 09, 2011 at 06:41 PM]
Is it my understanding that those color lens are plastic instead of glass?
basilicon89   [Feb 09, 2011 at 09:00 PM]
yes two materials of lenses are polycarbon and glass. Normally plastic signals get plastic lenses, and aluminum signals get glass. But there are options for glass in plastic signals, and plastic in aluminum signals. LED lenses are plastic.

Plastic lenses are clearly marked with a wattage limit of 150 watts (100Watts if masked for arrow). Plastic lenses will melt with excessive heat (like when the green is in rest) and become brittle very quickly.

20 year old plastic lenses that have been charred from heat can literally disintegrate from touching it.
LilCinnamon   [Feb 10, 2011 at 03:08 AM]
The last generation looks LED.
basilicon89   [Feb 10, 2011 at 03:25 AM]
Yes that example has an older Dialight fixture in it. If it was incandescent it would have the housing-mounted aluminum reflector inside and Eagle plastic lens.

A side note..Eagle and the Laboratory for Electronics (LFE) corporation merged in 1993. The visors were changed to screw on so it can accept the LFE visor. The LFE was revamped with Eagle DuraSig guts. Today Siemens still manufactures the LFE poly and Eagle DuraSig
Form109   [Feb 10, 2011 at 04:06 AM]
very nice to see all the diffrent generations of Durasig here....nice work nick. Wink
basilicon89   [Feb 11, 2011 at 10:42 PM]
Last May I was able to take a look at some prototype versions of the DuraSig. These are VERY rare, and were only made a short time before the production of the first generation in the 1970s.

They had the internal guts of a first generation version of the signal however there were noticable differences:

The doors were held shut with wingnuts inset in the door. This was replaced in the signals production run to thumb screws inset in the door.

The back of the signal was void of the model name "DURASIG" the signal was developed before the finalized molds were made. All that was on the back was an Eagle logo.

The prototypes were only developed in 8 inch.

The prototypes were not injection molded plastic like all poly signals made today. These were vacuum cast plastic. Thinner and more designed for prototyping then actual service.

I wish I still had the advertisements for the 1973 introduction of DuraSig to the Eagle signal line.

Comment 1 to 6 of 6
Page: 1
Powered by Coppermine Photo Gallery