Sentence:  What the difference between the said <WSD>mounture</WSD> upon 4 such Segments, or upon 4 wheels moving distinctly upon their Axell trees, as also between 2 wheels or one Segment like a Cart, or wheele and 2 segments like a wheele-barrow. 
Meaning of the word marked with <WSD> tags:  A part on any mechanical device that is used for mounting other parts.