Electrical measuring instruments

Claim 1

A SUPPORTING APPARATUS FOR INK SACKS OR THE LIKE COMPRISING, A SUBSTANTIALLY U-SHAPED MEMBER HAVING A PAIR OF OUTWARDLY EXTENDING ARMS CONNECTED AT THEIR BASES BY A BASE MEMBER, AN ELONGATED MEMBER, FIRST MEANS PIVOTALLY SUPPORTING ONE PORTION OF SAID ELONGATED MEMBER INTERMEDIATE THE FREE END PORTIONS OF SAID ARMS AND ADJACENT SAID FREE END PORTION OF ONE OF SAID ARMS, SAID ELONGATED MEMBER EXTENDING BETWEEN SAID ARMS TOWARD SAID BASE MEMBER AND HAVING AN END PORTION ADJACENT SAID BASE MEMBER, SAID ELONGATED MEMBER BEING COOPERABLE WITH SAID BASE MEMBER AND A FIRST OF SAID ARMS TO PROVIDE A POCKET FOR SUPPORTING THE INK SACK, SECOND MEANS CONTINUALLY URGING SAID ELONGATED MEMBER ABOUT ITS SAID SUPPORTING MEANS IN A DIRECTION AWAY FROM SAID FIRST ARM TO MAINTAIN SAID POCKET OF PREDETERMINED SIZE, THIRD MEANS URGING SAID FREE END PORTION OF SAID FIRST ARM IN A DIRECTION TOWARD SAID ONE PORTION OF SAID ELONGATED MEMBER TO PROVIDE A RESTRICTED OPENING FOR SAID POCKET TO PREVENT ACCIDENTAL MOVEMENT OF THE INK SACK OUTWARDLY OF SAID POCKET, SAID FREE END PORTION OF SAID FIRST ARM BEING MOVABLE AGAINST THE FORCE EXERTED BY SAID THIRD MEANS TO PERMIT THE PASSAGE OF THE INK SACK THROUGH SAID OPENING.