ing the opposite surface of the clasped shingle. An . ■♦<>>>» upright, forked at its upper end, is pivoted to the long IMFBOVED WATEB ELEVATOB. arm of the horizontal lever, and is formed at its lower In this device two buckets are preferably employed, end with a wide chisel edge, having two or more… … scribed limit. Should this pressure become too greatly DAVIS' IMFBOVED WATEB ELEVATOB. reduced, the spring will expand, and by increasing the struction. This shaft is operated by a crank, and is area of the passage, allow more steam to flow through. provided with two ratchet disks having teeth…
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