Drop wire circuit tester

An improved arrangement for testing the operability of drop wires associated with motor operated yarn handling equipment, including:

• a first power supply for energizing said motor;
• relay contact means for connecting said power supply to the motor in accordance with the condition of said relay contact means;
• and
• drop wire circuitry, said circuitry including a second power supply, a conductive bus joined to the second supply, and a relay operatively associated with the drop wires whereby when at least one of said drop wires electrically engages the bus, a circuit is completed from the second power supply to energize the relay;
• the improvement comprising:
• a first switch operable between normal and test positions, said switch in the normal position connecting said drop wires to the relay;
• normally closed contact jack switch means joined to said drop wires and said first switch whereby when said first switch is in the test position, said drop wires are connected through the jack switch contacts to said relay;
• and
• a tester device including a jack adapted to engage the jack switch means to open its contacts, said tester further comprising indicator means electrically connected across the jack switch contacts when said jack engages the jack switch so as to be energized when a drop wire engages the bus.