Adjustable pipe support

Claim 1

A SUPPORT, SAID SUPPORT BEING ADAPTED TO SUPPORT STRUCTURE AT ANY ONE OF A PLURALITY OF SELECTABLE POSITIONS, SAID SUPPORT COMPRISING: BASE, SAID BASE BEING ADAPTED FOR GROUND ENGAGEMENT, FIRST AND SECOND ENDS ON SAID BASE, A PIVOT SUPPORT ON SAID BASE ADJACENT SAID FIRST END THEREOF, A PLURALITY OF ABUTMENTS ON SAID BASE, SAID PLURALITY OF ABUTMENTS EXTENDING FROM ADJACENT SAID SECOND END OF SAID BASE TOWARD SAID FIRST END OF SAID BASE; A FIRST LINK, SAID FIRST LINK HAVING A PIVOT END AND AN UPPER END, SAID PIVOT END BEING PIVOTED TO SAID BASE AT SAID PIVOT SUPPORT ADJACENT SAID FIRST END OF SAID BASE; A SECOND LINK, SAID SECOND LINK HAVING AN UPPER END AND A PAWL END, A PIVOT PIN, SAID PIVOT PIN BEING PIVOTALLY ATTACHED TO SAID UPPER END OF SAID FIRST LINK AND SAID UPPER END OF SAID SECOND LINK SO THAT SAID FIRST AND SECOND LINKS ARE PIVOTED TOGETHER, SAID PAWL BEING SELECTIVELY ENGAGEABLE AGAINST ANY ONE OF SAID ABUTMENTS SO THAT SAID PIVOT PIN CAN BE SELECTIVELY POSITIONED AWAY FROM SAID BASE IN A PLURALITY OF SELECTABLE POSITIONS IN ACCORDANCE WITH THE ENGAGEMENT OF SAID PAWL AGAINST ANY ONE OF SAID PLURALITY OF ABUTMENTS; SUPPORT STRUCTURE SUPPORTED ON SAID FIRST AND SECOND LINKS ADJACENT THEIR UPPER ENDS, SAID SUPPORT STRUCTURE BEING ADAPTED TO SUPPORT A STRUCTURE AT ANY ONE OF A PLURALITY OF DIFFERENT SELECTED DISTANCES AWAY FROM SAID BASE.