which are opened or closed at will by a handle. and to be always parallel to its line of sight. The guard or outer case is of such a form as to present to Beside this, a second needle, which turns round a point the atmosphere, in whichever direction the car may be mov- which represents the second… … poses of general surveys of land, and for similar operations tion will render these statements perfectly clear. which the air rushes with a force commensurate with the where they are not unlikely to effect some considerable saving The frame, A, is of cast iron securely bolted to a bench. velocity…
Combination · Claim · Purpose · Set · Manner · Arranged · Constructed · Patents · Purpose set · Steam engines · Machine screws · Purposes set · Reissue received · Scientific American · Address munn · Purpose described · Cast Iron · Letters patent
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