Sound′er-mag′net.
(Telegraphy.) The magnet which operates the sounder in the receiving apparatus. In Fig. 5321, the coil B is inclosed in a metallic box, the ends of which are maintained in a state of tension by means of a screw-rod C, which carries the anvil D on its end, the object being to increase the sonorousness of the vibrations caused by the pivoted sounder striking the anvil, and which are propagated through the box. S is the spring which draws back the sounder after each impulse of the magnet.

