PATENT 37799 of 1972
Improvements In and Relating To Endless Belt Drives

This is a clear improvement on 28841 of 1967 (above).
The interesting bit is the spring tensioning mechanism combined with a toothed rack.

[Linked Image]
[Linked Image]



Attachments
patent_37799_72.pdf (172.14 KB, 2 downloads)
PATENT 37799 of 1972 Improvements In and Relating To Endless Belt Drives.