Ví dụ công khai
The invention comprehends an inclined runway or cable connected at its upper end in any desirable way to a point adjacent the bin, pocket, or chute to which the coal is to be delivered and connected at its lower end to a post or other point of attachment located at the side of the pile of coal. […] The coal tub or carrier by means of which the coal is conveyed is suspended from and adapted to run along the runway or cable, […]