Lift truck control system

Claim 1

IN AN INDUSTRIAL TRUCK HAVING ELEVATABLE LOAD ENGAGING MEANS ADJACENT ONE END THEREOF AND A HOIST MOTOR FOR ELEVATING SAID LOAD ENGAGING MEANS, AN OPERATOR CONTROL OPERATIVELY CONNECTED TO SAID HOIST MOTOR TO ENERGIZE SAME FOR ELEVATING MOVEMENT, SAID OPERATIVE CONNECTION INCLUDING FIRST AND SECOND VOLTAGE PRODUCING MEANS, FIRST AND SECOND MOTORS ADAPTED TO ENERGIZE SAID HOIST MOTOR, AND CONTROL CIRCUITRY OPERATIVELY CONNECTING SAID OPERATOR CONTROL, SAID VOLTAGE PRODUCING MEANS AND SAID FIRST AND SECOND MOTORS, INCLUDING FIRST MEANS ACTUATABLE BY THE OPERATOR CONTROL UPON INITIAL MOVEMENT THEREOF TO CONNECT SAID FIRST MOTOR ACROSS SAID FIRST VOLTAGE PRODUCING MEANS TO MOTIVATE THE HOIST MOTOR FOR A RELATIVELY SLOW ELEVATING SPEED, AND SECOND MEANS ACTUATABLE UPON FURTHER MOVEMENT OF THE OPERATOR CONTROL TO RECONNECT SAID FIRST MOTOR AND TO CONNECT SAID SECOND MOTOR ACROSS SAID FIRST AND SECOND VOLTAGE PRODUCING MEANS WHEREBY TO MOTIVATE SAID HOIST MOTOR FOR RELATIVELY RAPID ELEVATING SPEED.