Davis's manual of magnetism : including galvanism, magnetism, electro-magnetism, electro-dynamics, magneto-electricity, and thermo-electricity (1854)
Davis, Daniel · Boston : Palmer and Hall · leaf 199
HiuiiimflniMiiiiuTmmflnTtffliiyJiiMmtt … are fixed horizontally in the same line. The iron bars SINGLE BEAM AXIAL lilNGINE. 183 are connected at their bends by a transverse bar,through the ends of which pass guiding rods. ThesesUde in the tops of the small pillars, and keep thebent bars in place. On the shaft of the balance-wheel is the…
