ring-out signal would be properly received if the connected line
were open, since the clearing-out drop would still be directly across
the cord circuit. This arrangement also largely prevented through
ringing, since the currents would pass through the 1-microfarad
condenser and the 500-ohm drop more readily than through the two
condensers connected in series.

[Illustration: Fig. 284. Monarch Non-Ring-Through Cord Circuit]

In Fig. 284 is shown the non-ring-through arrangement of cord circuit
adopted by the Monarch Company. In this system the clearing-out drop
has two windings, either of which will operate the armature. The two
windings are bridged across the cord circuit, with a 1/2-microfarad
condenser in series in the tip strand between the two winding
connections. While the low-capacity condenser will allow the
high-frequency talking current to pass readily without affecting it to
any appreciable extent, it offers a high resistance to a low-frequency
ringing current, thus preventing it from passing out on a connected
line and forcing it through one of the windings of the coil. There is
a tendency to transformer action in this arrangement, one of the
windings serving as a primary and the other as a secondary, but this
has not prevented the device from being highly successful.

A modification of this arrangement is shown in Fig. 285, wherein a
double-wound clearing-out drop is used, and a 1/2-microfarad condenser
is placed in series in each side of the cord circuit between the
winding connections of the clearing-out drop. This circuit should give
a positive ring-off under all conditions and should prevent through
ringing except as it may be provided by the transformer action between
the two windings on the same core.

[Illustration: Fig. 285. Non-Ring-Through Cord Circuit]

Another rather ingenious method of securing a positive ring-off and
yet of preventing in a certain degree the undesirable ringing-through
feature is shown in the cord circuit, Fig. 286. In this two
non-inductive coils _1_ and _2_ are shown connected in series in the
tip and sleeve strands of the coils, respectively. Between the neutral
point of these two non-inductive windings is connected the
clearing-out drop circuit. Voice currents find ready path through
these non-inductive windings because of the fact that, being
non-inductive, they present only their straight ohmic resistance. The
impedance of the clearing-out drop prevents the windings