The telegraph manual: a complete history and description of the semaphoric, electric and magnetic telegraphs of Europe, Asia, Africa, and America, ancient and modern.

336 THE FRENCH RAILWAY ELECTRIC TELEGRAPH.
to move forward or draw back the electro magnet, it is sufficient to turn the screw for the purposes respectively. The exFig. 2. tremities of the covered
wire spools terminate. uw at two screws, or bindIL caw-d- ing-posts, Q Q', which,
T;i.e.......l M by means of two metal
M' III te -, strips, communicate
with the exterior bind-.,.:1 _-! inmg-screws, A A'.
The armature R e,
o? a' \|~ ~placed in front of the
electro magnet, is
M.<,_ =g | \ ol moveable around the
- _ |two screws, R and R'.
I ^ l,1 =. 4. The rod T T', fig. 4,
_ = C - - / suspended from the
middle, carries at its
____ t^1 | - lower part a little
horizontal point T v,
x. _^ _ Ed j tengaged in a little
-?_l~ -. -.- rk-.ii.* fork which is attached
~ -M — to the axis x Y; finally
in the middle of this rod, at z, is formed two little slips, m
and m', situated in planes differing from each other, and below
the escapement wheel L, which has 13 teeth.
Fig. 3.
(- a [iut