Device for holding out-sized documents

A device for holding out-sized documents, which comprises:

• (a) a support stand comprising a horizontal guide rail, a first leg and a second leg which support the guide rail between them, a third leg which supports the guide rail at its approximate center, and a slidable support bracket which rides on the guide rail;
• said slidable support bracket comprising a short length of rectangular tubing having one of its sides open, including a multiplicity of guide wheels mounted inside said rectangular tubing, and located to engage bottom and top surface ridges on said guide rail while said bracket slides along said guide rail,
• a projecting member joined to the closed side of the rectangular tubing, said projecting member including a hole bored vertically at near its projecting end, and
• a bearing shaft which is seated in said hole on said projecting member, said bearing shaft including a socket cavity formed in its upper portion, providing a bearing surface for supporting equipment;
• (b) a support arm assembly pivotally mounted on said slidable support bracket by connection to said socket in said bearing shaft, said support arm assembly comprising
• a vertical yoke having a forked end at its upper proximate end and a stepped down diameter portion at its distal end to fit in said bearing shaft,
• a first pivot pin mounted horizontally through a lower portion of said vertical yoke near to its distal end,
• a second pivot pin mounted between the furcations of the forked end of said vertical yoke and having ends projecting outwards from said furcations,
• a long arm member mounted pivotally at one end to said second pivot pin and functioning as an extended support arm,
• a third pivot pin mounted horizontally through said arm member and having ends projecting outwards, said third pivot pin being located at a distance approximately one fourth of the length of said arm member from said second pivot pin to apply a suitable point for application of lever action on said support arm,
• two flat plate members mounted one on each side of said arm member, each said plate member being fastened at near its proximate lower end to said first pivot pin, and at near its distal upper end to said third pivot pin, each said plate member having a long slot with multiple notches cut in its surface starting at near its distal upper end, said third pivot pin projecting through said slot and normally being held in any one of said notches, thereby providing cantilever support for said arm member, said slot with multiple notches in each plate member, acting together with said third pivot pin to provide a variable vertical angle locking position for said arm member;
• (c) a fastening pin, said fastening pin connecting both said plate members at about their center, providing structural rigidity;
• (d) an extension rod assembly comprising
• a yoke having a forked end,
• a fourth pivot pin, mounted between the furcations of the forked end of said yoke and having ends projecting outwards from said furcations, said fourth pivot pin being passed through the free end of said support arm which is fitted in said forked end of said yoke, for suspension of said yoke from the end of said support arm,
• a rectangular cross-section block member having its long axis fastened at its center to the bottom of said yoke at 90 degrees to the vertical axis of said yoke,
• two identical primary extension rods made of tubing, each primary extension rod being connected to an end of said block member in line so as to form a single horizontal arm composed of three parts, each said primary extension rod having a length long enough to support a large size document, and
• a guide rod, said guide rod being connected to the approximate center of said block member and at 90 degrees to the long axis of said block member so that said guide rod hangs downward, said guide rod including a handle fastened to its lower end for an equipment user, said guide rod enabling a user to remotely move said extension rod assembly up, down or in a horizontal arc around said vertical support stand;
• and
• (e) means for remotely adjusting the height position of said extension rod assembly in cooperation with said guide rod;
• said support stand being configured in a manner permitting a user to remotely move said extension rod assembly, holding documents, horizontally from one side to the other as well as to raise or lower said extension rod assembly.