Bearing structure for rotatable shaft

A bearing structure for rotatable shafts, comprising:

• first and second rollers for gripping and delivering a sheet, said first and second rollers having respective ends rotatably supported by a wall;
• and
• first and second support members detachably mounted on said wall by axial insertion, said respective ends of said first and second rollers being rotatably inserted and supported in said first and second support members, respectively;
• said first and second support members comprising:
• respective first and second tubular sleeves disposed respectively in first and second holes defined in said wall;
• and
• respective first and second engaging members disposed on said first and second tubular sleeves, whereby said first and second engaging members are positioned on a same side of said wall and act to retain said first and second support members on said wall against removal.

A bearing structure for a rotatable shaft, comprising:

• a rotatable shaft having an end rotatably supported by a wall;
• and
• a support member detachably mounted on said wall by axial insertion, said end of said rotatable shaft being rotatably inserted and supported in said support member;
• said support member including,
• a tubular sleeve disposed in a hole de fined in said wall;
• and
• an engaging member disposed on said tubular sleeve, whereby said engaging member can retain said support member on said wall against removal, said engaging member including,
• an inner engaging member disposed on an end of said tubular sleeve and held against a surface of said wall;
• and
• an outer engaging member disposed on an opposite end of said tubular sleeve and held against an opposite surface of said wall, whereby said inner and outer engaging members jointly retain said support member on said wall against removal, wherein said wall has a recess defined therein in communication with said hole, said inner engaging member being movable through said recess when said support member is installed on said wall.

A bearing structure for rotatable shafts, comprising:

• first and second rollers for gripping and delivering a sheet, said first and second rollers having respective ends rotatably supported by a wall;
• and
• first and second support members detachably mounted on said wall by axial insertion, said respective ends of said first and second rollers being rotatably inserted and supported in said first and second support members, respectively;
• said first and second support members including,
• respective first and second tubular sleeves disposed respectively in first and second holes defined in said wall;
• and
• respective first and second engaging members disposed on said first and second tubular sleeves, whereby said first and second engaging members retain said first and second support members on said wall against removal, said first and second engaging members including,
• respective first and second inner engaging members disposed on respective ends of said first and second tubular sleeves and held against a surface of said wall;
• and
• respective first and second outer engaging members disposed on respective opposite ends of said first and second tubular sleeves and held against an opposite surface of said wall, whereby said first and second inner and outer engaging members jointly retain said first and second support members on said wall against removal.