>Would all of these re-issue #s be reflected on all of the patent papers avail
They should be, but, there is of course no way to know what patents apply that were not marked...
You can only get one reissue at one period of time, the reissue extends the life of the original patent, and expires it, so overall there is only one active patent. However, one inventor can certainly have multiple primary patents for different parts of a thing as long as each part is novel and new. And, each of those can possibly be reissued....(or could, we are talking 1920's patent rules here, which aren't the same as todays rules btw)
>how could this be from two different inventors
Easily, and common, some company licences both inventors improvments for different parts of the jack and combines them into one product.
Modern automobiles have hundreds of patents by different people reflected in the parts as assembled...
It may be that, for example, one patent applies to only the screw mechanism, and the other applies only to the lifting foot assembly...you will have to read the fine print in the patents to see what exactly each covered.
While rare, it is also possible to have 2 patents that overlap in a way that makes each of them only safe to use if you licence both, because either alone may be infringing on the other, this isn't really supposed to happen, but there are cases where it has...