Hi Norm and Jack
The other day when looking for more info. on the trailing seat I found a few more pics.
The Benz patent was easy to find although the text is obviously in German.

Cheers
Max.

Attachments
Self Powered Sulky.png (736.5 KB, 23 downloads)
3.jpg (161.31 KB, 23 downloads)
5.jpg (125.16 KB, 23 downloads)
7.jpg (51.71 KB, 23 downloads)
Benz.jpg (45.97 KB, 23 downloads)
E-Trailer , Roll Test.png (909.03 KB, 23 downloads)
4.jpg (20.06 KB, 23 downloads)
44.jpg (81.19 KB, 22 downloads)
Pusher Trailer.jpg (67.67 KB, 22 downloads)