Artists impression of how
Worcester's steam engine worked
* the four-way cock is figured and described as early as 1618; by Robert Fludd
- A, A' Two cold water vessels connected by -
- B, B' the steam pipe, with -
- C, the Boiler, set in-
- D, the furnace. The cold water vessels A A', also are connected with-
- E, the vertical water pipe by means of-
- F, F' continuations of the same pipe conducted into and nearly touching the bottom of eaeh vessel A, A'.
- G, G', are two water supply pipes, with valves a, a', dipping into-
- H, the well. lt is obvious that by uniting these pipes, and placing the valves in the upper bend of each, it would be sufficient for a single pipe to dip into the water.
- On the steam pipe B B' is-
- b, a four-way steam cock, operated by-
- b', its lever handle; and on the horizontal portion of the water pipe F F', is-
- c, a four-way water cock, operated by-
- c', its lever handle.
Image and Text Source: University of Rochester, Steam Engine Library