Boom and grapple

Claim 1

IN A MACHINE FOR DELIMBING AND DEBRAKING FELLED TREES, A BOOM FOR FEEDING FELLED TREES ALONG AN AXIAL PATH INTO SAID MACHINE, SAID BOOM COMPRISING A SUPPORT, A FIRST MEMBER PIVOTALLY MOUNTED FOR ROTATION ABOUT A HORIZONTAL AXIS ON SAID SUPPORT, A PLURALITY OF MEMBERS TELESCOPED WITHIN SAID FIRST MEMBER, A GUIDE MEANS ON SAID FIRST MEMBER AND SAID PLURALITY OF MEMBERS TELESCOPED THEREIN FOR SUPPORTING AND GUIDING SAID PLURALITY OF MEMBERS FOR MOVEMENT INTO AND OUT OF SAID FIRST MEMBER, MEANS INTERCONNECTING SAID FIRST MEMBER AND SAID PLURALITY OF MEMBERS FOR EXTENDING SAID PLURALITY OF MEMBERS OUTWARD FROM ONE END OF SAID FIRST MEMBHER TO LENGTHEN SAID BOOM AND FOR MOVING SAID MEMBERS INWARD INTO SAID FIRST MEMBER TO SHORTEN SAID BOOM, A GRAPPLE INTO TO THE INNERMOST OF SAID PLURALITY OF MEMBERS, SAID GRAPPLE INCLUDING JAWS PIVOTALLY MOUNTED FOR MOVEMENT ABOUT A SUBSTANTIALLY HORIZONTAL AXIS, MEANS FOR PIVOTING SAID JAWS ABOUT SAID AXIS TO OPEN AND CLOSE SAID JAWS, AND A HEELING MEANS ON SAID FIRST MEMBER PIVOTALLY MOUNTED ON SAID SUPPORT.