I guess it also works with cogs only at the bottom. Are the other cogs filed away?
I removed from the take up spool from my 1928 Leica I the top disk. The top disk was in the way, the spool needed to be a bit higher to avoid perforitis. Perforitis is when the perforation of the film is visible in the film gate.
The camera works perfectly now the top disk of the spool is removed.