Help w/large trailer definitions

[Unforgiven]

I've tried to find answers on Google & here without success. Can any of you trailer gurus give me a brief explanation of the following terms?

-Through shaft axle suspension.

-Draw bar type hinged tongue

-Bolster type swivel (what exactly is a bolster?)

-2 type 2 style E class non-definitive data (huh?)

Thanks.

 

[Unforgiven]

Also,

Are the lunette rings on large, bolster trailers the same size as the smaller M105 trailers? That is, will they fit the Deuce pintle or are they too big?

 

[L999here]

....little different...

Most of the pre-50's vehicles had the same pintle ring. After that,the larger lunett and such seem to predominate. The latch-type on my 1943 White half track is smaller than the piece on my 1970 duce. Both size rings will fit in them.