Pneumatic timing attachment for an electromagnetic device

An electromagnetically operated timing device comprising:

• an electromagnet assembly including a magnet coil and an armature movable from a first to a second position upon energization of the coil, means including a plurality of plungers movable from a first to a second position in response to the movement of the armature from the first to the second position a switch including a stationary contact, a movable contact, and a switch operator, a switch actuator movable from a first position to a second position in response to the movement of a first of the plurality of plungers from the first to the second position for moving the switch operator and the movable contact from a first to a second operated position, a resettable timing unit having an operator movable from a reset position to a timed-out position during a regulated timed period, an ON delay spring biased latch having a portion releasably engaging the switch actuator for maintaining the switch actuator at its first position when the ON delay latch is in a latching position and a portion engageable with the timing unit operator for positioning the ON delay latch in a released position to permit movement of the switch actuator to its second position when the timing unit operator is at its timed-out position, an OFF delay spring biased latch having a portion releasably engaging the switch actuator for maintaining the switch actuator at its second position when the OFF delay latch is in a latching position and a portion engageable with the timing unit operator for positioning the OFF delay latch in a released position to permit movement of the switch actuator to its first position when the timing unit operator is at its timed-out position, an ON delay reset lever having a portion engageable with the timing unit operator for moving the timing unit operator to its reset position when the ON delay lever is moved from an inactive position to an actuating position, an OFF delay reset lever having a portion engageable with the timing unit operator for moving the timing unit operator to its reset position when the OFF delay latch is moved from an inactive position to an actuating position, a timing unit actuator movable from a first position to a second position in response to the movement of a second of the plurality of plungers from the first to the second position, said timing unit actuator having a first portion engageable with a portion on the ON delay reset lever for moving the ON delay reset lever from its inactive to its actuated position when the timing unit actuator is moved from its second to its first position and a second portion engageable with a portion on the OFF delay reset lever for moving the OFF delay reset lever from its inactive to its actuated position when the timing unit actuator is moved from its first to its second position, and a timing mode selector movable to an ON delay position and an OFF delay position, said mode selector having a portion engaging the OFF delay latch for maintaining the OFF delay latch in its released position and a portion positioning the OFF delay reset lever in its inactive position when the mode selector is at its ON delay position and a portion engaging a portion on the ON delay latch for maintaining the ON delay latch in its released position and a portion positioning the ON delay reset lever in its inactive position when the mode selector is at its OFF delay position.