Abstract: One embodiment of the invention relates to an adjustable cart including a upper platform with a front portion and a back portion, a lower platform with a front portion and a back portion, rolling members for movably supporting the lower platform, a first supporting member connected to the back portion of the lower platform, and a first rotational pivot structure connecting the first supporting member to the back portion of the upper platform to permit pivoting about a first pivot location. The upper platform is configured to rotate about the first rotational pivot structure from a first position substantially parallel to the lower platform to a second position substantially perpendicular to the lower platform during which the first pivot location moves away from the lower platform.

Abstract: One embodiment of the invention relates to an adjustable cart including a upper platform with a front portion and a back portion, a lower platform with a front portion and a back portion, rolling members for movably supporting the lower platform, a first supporting member connected to the back portion of the lower platform, and a first rotational pivot structure connecting the first supporting member to the back portion of the upper platform to permit pivoting about a first pivot location. The upper platform is configured to rotate about the first rotational pivot structure from a first position substantially parallel to the lower platform to a second position substantially perpendicular to the lower platform during which the first pivot location moves away from the lower platform.

Abstract: A ribbon cartridge has a ribbon re-inking mechanism which is made up of a porous rubber or elastomer ink roll journaled on a fixed shaft and in contact with an ink transfer roll journaled on a pivotable member and rockable against the ink roll. The ink ribbon provides the force necessary to urge the transfer roll in contact with the ink roll and also to drive the rolls in normal operation. A modified arrangement includes a balancing roll to enable proper operation of the re-inking mechanism in different orientation and movement of the ribbon cartridge and to increase re-inking sensitivity.