ated while the bituminous increased 49,709 tuns. During the by the hand lever, D, the rock lever, J, and the connecting past year, the Baltimore and Ohio Railroad, with the Chesa- rod, I. peake and Ohio Canal, brought to market 1,717,075 tuns of From the side of the cutter head, A, extends a collar… … mortising. The guide lever, K, is first moved to DOVETAILING MACHINE. benefits which Baltimore had by her Cumberland the extremity of the arc on one side, and the cutters being raised by the lever, D, move upward obliquely, by the completion of the Pittsburgh and Connellsville Rail- and cut one…
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