Vintage screw in sheilded light socket

[PinchPoint]

I have to of these there labels are toast because of heat. If someone can idenify these jewels for me I say thanks. I have looked at many(100s) pictures and nothing looks close to them. They were screwed into swiveling sockets. And those were screwed into 3/8 black pipe made into a T. With a socket at the T top corners. If this was a light stand at one time it may have had a base and been in a garage or other work area. I thought they looked different. So I took them down from the floor joists in the basement. Where they shined down onto the workbench.

<a href="http://s1167.beta.photobucket.com/user/pinchpoint2/media/001_zpsa7244765.jpg.html" target="_blank"><img src="http://i1167.photobucket.com/albums/q624/pinchpoint2/001_zpsa7244765.jpg" border="0" alt=" photo 001_zpsa7244765.jpg"/></a>

<a href="http://s1167.beta.photobucket.com/user/pinchpoint2/media/002_zpse843ad63.jpg.html" target="_blank"><img src="http://i1167.photobucket.com/albums/q624/pinchpoint2/002_zpse843ad63.jpg" border="0" alt=" photo 002_zpse843ad63.jpg"/></a>

<a href="http://s1167.beta.photobucket.com/user/pinchpoint2/media/003_zps6fa26317.jpg.html" target="_blank"><img src="http://i1167.photobucket.com/albums/q624/pinchpoint2/003_zps6fa26317.jpg" border="0" alt=" photo 003_zps6fa26317.jpg"/></a>

<a href="http://s1167.beta.photobucket.com/user/pinchpoint2/media/005_zps62343fb7.jpg.html" target="_blank"><img src="http://i1167.photobucket.com/albums/q624/pinchpoint2/005_zps62343fb7.jpg" border="0" alt=" photo 005_zps62343fb7.jpg"/></a>

Any ID help would be welcome.

Pinch...