The Pulley Supports .. or Station Pillars “support the intermediate pulleys of a compound transmission”. That last bit is taken directly from A treatise on belts and pulleys. It continues – “To support the pedestals for the axle of a pulley of this kind we may with propriety build up a frame-work of wood; it is, however preferable to use a solid pier of brick or stone, upon which are fixed either low or …high pedestals. … The pedestal-plates are fastened to the pier by means of four strong anchor-bolts passing through the pier into the foundation.”
The example from the book as shown here was made from brick and stone
With that in mind I cobbled together my own version from concrete.