"Worm and Roller" vs. "Worm and Peg" steering boxes

Is there a difference between "Worm and Roller" steering boxes and "Worm and Peg" steering boxes? If so, what is it?

My guess is that the first is American lingo and the second is European. But if there really is a difference, I'd like to hear about it.

Thanks, as always,

--Matt

 

Is different. Nomenclature is American--see a 1940 or so Motor's manual or some such. The W&R I think describes types like Ford 1937-48, with a roller on the pitman shaft sector (where you have a gear sector on a '32) engaging the worm. The peg type (Willys, maybe Crosley, impoverished s*** type car makers...) had an actual peg sticking out of the sector following a square cut groove in the worm--parallel parking must have been a real joy.

 

Thank you, Bruce. I appreciate it!

 

Wait a minute.

I understand the difference between a sector and a roller, but I still can't visualize the worm and peg.

So is the peg square? It follows the square groove in the worm, and then the peg serves to turn the pitman arm?

 

Hmmm...the groove in the worm is square cut, the peg is cylindrical so it can turn a bit in groove...the peg would be above or below axis of sector shaft, so as it screws up or down the worm, sector shaft rotates. I think on some applications, the peg is actually rollerized and not just a primitive dowel. I hope so.

 

on my 60 willys sedan delivery it wasnt. it didnt take long till i had the grip of a gorilla and pythons like hulk hogan. but i was still dateless cause i drove a willys.

 

Thanks, CD.

Does anyone happen to have a schematic or an exploded view of a worm-and-peg box? I believe that they were also used in Austin-Healeys.