Hi Cleon,
I had a look at the pictures you posted,and the rim clamp on the left is the correct one for a 1 ton truck from at least 1925- 1930,it's exactly the same as the ones on my '28 truck.
The clamp lug on the right looks very much like the clamps on a mates 1925 Dodge tourer.They use a different type of bolt,and the nut has flange either spot welded to it,forged with it or swaged onto the nut.
The early truck rims are different to the late '27(LM series)
to the 1930 (LR series),in the way the rim locks together on itself.
The pre LM rims used a joint that looks like a door hinge joint,and used a pin to lock the two ends of the rim together,and had the driving lug at about 60 degrees away from the rim lock joint.These rims were,I believe made by KELSEY-HAYES.
The later style of rim used a swinging type of lock device,identical to the passenger car rims,and were made by JAXON.The driving lug for the JAXON truck rims is a part of the locking device.
Both the KELSEY-HAYES and JAXON truck rims used a special type of rim splitting/spreading tool to suit each type of rim.I've only ever seen one tool to suit the early truck rim out here,but I was fortunate enough to get the proper JAXON rim splitting tool for my truck.It does make changing tyres a much easier job than trying to use a 3 leg rim spreader meant for cars.
