This has probably been discussed before, but I couldn't find it using a search.
On page 44 of the MTFCA transmission booklet, there is a picture (Figure 50) of a Ford patent drawing of a four speed (three forward, one reverse) planetary transmission that was never produced.
Does anyone know the patent number that this drawing is from? I would like to examine it in more detail, thanks!
I have studied the detail on perhaps what you are talking about
It used a lever to select the band you wanted to engage
The band was then tightened by a spring. The bands were tapered against the drums as the drums were narrow
Henry thought up this transmission too, added to the planetary, would have replaced the Ruckstell if he had made it. Guess that is why Henry let the dealers install Ruckstell's, as they use planetary gears too
Don't know if that drawing in the club Transmission book is a Ford patent.
Did a US PTO quick search on Henry Ford and transmissions and that one didn't show.
These did: 1922 pat. 1,529,021 and that one appears to be the Fordson.
1926 pat. 1,674,006 and that is the one above, a 2 speed accessory, working like the Ruckstell but in the drive line.
1927 pat. 1,749,099 and appears to be the Model A
1929 1,758,597 and this is a crazy one, oil pumped bands that provide 3 speeds, and final direct drive, planetary drums, sorta like a automatic trans but you clutch and shift, claims are shifts can be done effortlessly.
On the govt web page, quick search the pat. no. and then hit the button for 'image'. Your computer will need latest Adobe PDF viewer.
I noticed what I think is the 1929 patent in a microfilm parts list at The Henry Ford last week. I wonder if it was intended for the new V-8? There were many experimental drawings including the X-8 engine in the box, and a Ford built Model T tractor conversion.
Thanks, guys, I'll keep looking. Fred Houston, you are listed in the foreword as a co-author with Bruce McCalley of the MTFCA transmission book, can you recall where Figure 50 came from?
The photo credit only said "Ford Owner and Dealer", but no specific issue given. So searched my library and found this in the Sept 1921 issue, in article on special transmissions for the Ford, like the Perfecto, Concord, and Langebin axle type, Moore's and the others of the day.
No patent number given for #1 or the others, or any reference other than it was a 4 speed planetary. The author concluding this design would create a "lot of friction" with some many bearings and planetary gears.