I would like help with a circuit layout which works without any semiconductors please.... I would like to start a DC motor with a lift cable drum attached.... The motor would run continuously, lowering a table which would stop on a fixed stop but the motor continue in the same direction and pull the table back up without changing direction, just by the winch cable being wound up as the cable runs out and continues back up 'the other side' of the drum.... The table needs to go back to the top and then stop until the motor is restarted by a push button or microswitch.... HOWEVER the motor needs to restart in the opposite direction so the table drops down again, repeating this every time the button is pressed. Note that the table will not want to be stopped until it returns to the top again. Think of the motor as a YoYo up side down.... Help, I've got brain fade!