Simplex (France) was showing forged steel dropouts with a derailleur hanger for their TdF derailleur in their 1948 catalog. I don't know if they had them even before that for their Champion Du Monde derailleur.
Chuck Schmidt South Pasadean, Southern California
David Benson wrote:
>
> Ray
> The 1953 Campagnolo #12 catalog shows a set of dropouts #2009 'SERIE FORCELLINI PER CAMBIO CORSA, PARIS ROUBAIX,CON ATTACHO PER CAMBIO GRAN SPORT' with teeth to engage with a Cambio Corsa splined hub axle, and a derailler hanger to fit Gran Sport.
>
> The 1955 #13 Catalog shows #1010 and #1010/1 dropouts with integral derailler hangers for Sport or Gran Sport deraillers.
>
> DB
> Auckland, NZ
>
> wheelman@nac.net wrote:
> Okay, I forgot this group takes things to the extreme and I was not clear
> in my request. I am asking again about when the MODERN TYPE rear
> derailleur hanger came into production. Not one that was added later with
> a torch and not the various types that hang off the chainstay. The one you
> see today hanging off the bottom of the rear right dropout.
>
> Thanks
> Ray Homiski
> Elizabeth, NJ