John,
Here's links to pictures of pre 1950 Hetchins' showing the thin dropouts that I would expect on a 1947 British made bike.
The last one is a 1948 Massed Start model.
>http://www.hetchins.org/504bril-05.htm
>http://www.hetchins.org/504bril-01.htm
>http://www.hetchins.org/504sixday1.htm
>http://www.hetchins.org/504ms-01.htm
Chas. Colerich Oakland, CA USA
John D Proch wrote:
> Hi Charles,
>
> I understand that pre 1956 Hetchins used all cast dropouts.
>
> Regards,
> John Proch
> La Grange, Texas