_S_, string.

_D_, is the damper head secured to the damper wire by a set screw.

_DL_, damper lever, working in damper flange _g_, which is screwed to
main rail.

_s_, spoon; so called from its shape. It is screwed into the wippen.
When the key is struck, the motion on the wippen throws the spoon
forward, pushing the lower end of damper lever forward, and releasing
the damper from its contact with the string. The damper is held
against the string by the wire spring which is seen running from the
damper flange to the top of the damper lever.

_DR_, damper rod. This is a rod running from the left or bass end of
the action to the right as far as the dampers are continued in the
treble. It is acted upon by the "loud" or damper pedal, which raises
the outer projection, and by being hinged to the main rail about the
same height as this projection, the entire rod is thrown outward
against the lower ends of the damper levers, releasing all the dampers
simultaneously. This being the only office of the right pedal, it is
readily seen that this pedal does not increase the loudness, but
simply _sustains_ any number of tones struck successively, giving the
effect of more volume.

The student should familiarize himself with all technical terms used
in this lesson, as they will be referred to frequently in the
succeeding lessons on repairing and regulating.