> I picked-up a TA front rack. It's quite small (mini-rack?), chromed and
> brazed steel designed to bolt to fork crown and cantilever bosses? It has a
> hanger or something sticking-out the left side about 2". What the heck is this
> hanger for? Vintage may be 60's.
>
As others have explained, the hanger arm is for attaching a headlamp.
This rack is designed to support the bottom of a French-style handlebar bag. It will attach to the fork crown center bolt and the pivot bolts on Mafac brakes - it doesn't work with any other maker's brakes, to my knowledge.
If you'd like to swap your rack for a similar one without the lamp mount, drop me a note.
regards,
Jack Fortune
Eugene, Oregon