Aligning and centering device for helicopter

Claim 1

APPARATUS FOR POSITIONING AN OBJECT ON A SURFACE IN A PREDETERMINED MANNER, SAID APPARATUS COMPRISING: (A) A PAIR OF ELONGATED BARS WHICH ARE POSITIONED IN A PARALLEL RELATIONSHIP AT OPPOSITE ENDS OF THE SURFACE; (B) MEANS FOR CONTROLLING MOVEMENT OF THE ELONGATED BARS TOWARD AND AWAY FROM EACH OTHER ALONG THE SURFACE; (C) A PAIR OF LEVERS PIVOTABLY MOUNTED ON EACH ELONGATED BAR, THE LEVERS OF EACH PAIR OF LEVERS BEING PIVOTED AT INTERMEDIATE POINTS ON THEIR RESPECTIVE ELONGATED BARS AT PREDETERMINED POINTS ADJACENT OPPOSITE ENDS THEREOF, ONE END OF EACH LEVER NORMALLY EXTENDING INWARDLY BETWEEN THE ELONGATED BARS AND THE OTHER END OF EACH LEVER EXTENDING OUTWARDLY IN THE OPPOSITE DIRECTION AWAY FROM ITS RESPECTIVE ELONGATED BAR; (D) MEANS NORMALLY BIASING EACH PAIR OF LEVERS SO AS TO INCREASE THE PROJECTED ANGLE THEREBETWEEN; (E) AND MEANS SECURED TO THE SAID OTHER ENDS OF EACH PAIR OF LEVERS FOR ENGAGING THE ADJACENT ENDS OF THE SURFACE AND ROTATING THE LEVERS ABOUT THEIR PIVOT POINTS ON THEIR RESPECTIVE ELONGATED BARS AS THE ELONGATED BARS MOVE ALONG THE SURFACE.