Trolley (horse-drawn) milk float is more a trolley than a float, as is the brewer's 'dray' seen at horse shows. Trolley (horse-drawn) Among horse-drawn vehicles, a trolley was a goods vehicle with a platform body with four small wheels of equal size, mounted underneath it, the front two on a turntable undercarriage. The wheels were rather larger and the deck proportionately higher than those of a lorry. A large trolley is likely to have had a headboard with the driver's seat on it, as on a lorry but a smaller trolley may have had a box at the front of the deck
Lorry (horse-drawn) were two-horse vehicles, partly because of the weight carried but also because the roll-resistance of the very small wheels had to be overcome. For the same reason, it was primarily an urban vehicle so that, on the paved roads, the small wheels were not an insurmountable handicap. In any case, the axles were sprung. As in many fields, as time went by, people used the word perhaps without understanding its detailed meaning, so that it became applied less precisely and other configurations were given the name. By 1911, as the motor-propelled lorry (a kind of truck) developed, a pedant would