Inventor of Edison screw

Have more questions? Submit a request

In 1909 the (standardised) round screw-thread was designed for the incandescent lamp that had been patented by Edison. This was combined with a metal final sleeve, forming the so-called Edison Screw. The Edison Screw type is indicated by E (Edison), followed by the diameter of the fitting. E27 is the standard, called Edison Screw - ES abroad. Smaller versions are: E14 (Small Edison Screw – SES), E12 (Candelabra Edison Screw – CES), E10 (Miniature Edison Screw – MES) and E5 (Lilliput Edison Screw – LES). There is only one larger size: E40 (Giant Edison Screw – GES). Therefore, Thomas Edison (the inventor of the light) is also the brain behind the fittings.

The Calex range only includes the E12, E14, E27 and E40 Edison fittings.

Articles in this section

Was this article helpful?
0 out of 0 found this helpful
Share

Comments

0 comments

Please sign in to leave a comment.