Paperback-hardcover conversion insert

A method for making a hard cover for a book having a plurality of separate pages and a back, said method comprising:

• a. selecting a first flexible limber sheet;
• b. attaching a first stiff material to a first side of said first flexible limber sheet;
• c. attaching a second stiff material to said first side of said first flexible limber sheet in a spaced apart relation to said first stiff material to allow movement of said first flexible limber sheet and to allow said first stiff material to overlie each other;
• d. attaching a second flexible limber sheet to said first stiff material and to said second stiff material to allow said first stiff material and said second stiff material to overlie each other;
• and,
• e. positioning a first compressible reilient material between said first stiff material and said second stiff material for being close to said back of said book, said first compressible resilient material, in cross-section, being of a generally, elliptical configuration.

A method for making a hard cover for a book having a back and a protective cover, said method comprising:

• a. selecting a first flexible limber sheet;
• b. attaching a first stiff material to a first side of said first flexible limber sheet;
• c. attaching a second stiff material to said first side of said flexible limber sheet in a spaced apart relation to said first stiff material to allow movement of said first flexible limber sheet and to allow said first stiff material to overlie each other;
• d. attaching a second flexible limber sheet to said first stiff material and to said second stiff material to allow said first stiff material and said second stiff material to overlie each other;
• e. positioning a first compressible resilient material between said first stiff material and said second stiff material for being close to said back of said book, said first compressible resilient material, in cross-section, being of a generally, elliptical configuration;
• and,
• f. operatively connecting together said protective cover of said book to said second flexible limber sheet.

A method for converting a paperback book to a hardback book, said method comprising:

• a. supplying a narrow, stiff piece of material with a configuration typical of that of the spine of a book, said stiff material having a first side, which is convex, and a second side, which is concave;
• b. supplying a compressible solid foam having a first side and a second side, said compressible solid foam in cross section having a generally elliptical configuration;
• c. connecting together said first side of said compressible solid foam and said second side of said stiff material using an adhesive;
• d. supplying a backing material;
• e. supplying a hard book cover having two spaced-apart stiff panel portions and a flexible hinge portion connected therebetween;
• f. connecting together a central portion of said backing material and said first side of said stiff material using an adhesive;
• g. connecting together portions of said backing material located to each side of said central portion and said two spaced-apart stiff panel portions using an adhesive;
• h. supplying a paperback book having a spine;
• and
• i. connecting together said book spine and said second side of said compressible solid foam using an adhesive.

A method for converting a paperback book to a hardback book, said method comprising:

• a. supplying a narrow, stiff piece of material, said stiff material having a first side and a second side;
• b. supplying a compressible and resilient material, operatively deformable in response to opening and closing of the paperback book during usage, and having a first side and a second side, said second side having a generally convex shape;
• c. connecting together said first side of said compressible material and said second side of said stiff material using an ahesive;
• d. supplying a backing material;
• e. supplying a hard book cover having two spaced-apart stiff panel portions and a flexible hinge portion connected therebetween;
• f. connecting together a central portion of said backing material and said first side of said stiff material using an adhesive;
• g. connecting together portions of said backing material located to each side of said central portion and said two spaced-apart stiff pannel portions using an adhesive;
• h. supplying a paperback book having a spine;
• and
• i. connecting together said book spine and said second side of said compressible material using an adhesive.

A cover for a book having a plurality of pages, said cover comprising:

• a first flexible sheet;
• a first stiff material and a second stiff material attached to said first flexible sheet, said first and second stiff materials being spaced apart on said first flexible sheet to allow movement between said first and second stiff materials, and allow said first stiff material and said second stiff material to overlie each other;
• and
• a second flexible sheet attached to said first and second stiff materials inward of said first flexible sheet;
• a narrow, stiff piece of material with a configuration typical of that of the spine of a book, said stiff spine material having a first side, which is convex, and a second side, which is concave, said first side being attached to the inside of said second flexible sheet;
• a compressible resilient material positioned between said first stiff material and said second stiff material, said compressible resilient material having a first convex side attached to said second side of said stiff spine material and a second convex side attachable to the spine of the book to position the book between said first and second stiff materials.

A cover for a book having a plurality of pages, said cover comprising:

• a flexible sheet having a central portion and first and second end portions, one to each side of said central portion;
• a first stiff material attached to said first end portion of said flexible sheet and a second stiff material attached to said second end portion of said flexible sheet, said first and second stiff materials being spaced apart on said flexible sheet to allow movement between said first and second stiff materials, and allow said first stiff material and said second stiff material to overlie each other;
• and
• a compressible resilient material positioned between said first stiff material and said second stiff material and held therebetween in alignment with said central portion of said flexible sheet, said compressible resilient material having a first convex side facing inwardly toward said flexible sheet and a convex second side facing outwardly away from said flexible sheet, said second side being attachable to the spine of the book to position the book between said first and second stiff materials.

A cover for a book having a plurality of pages, said cover comprising:

• a hard book cover having two spaced-apart stiff panel portions and a flexible hinge portion to allow movement between said panel portions, and allow said panel portions to overlie each other;
• and
• a compressible resilient material positioned between said panel portions, said compressible resilient material having a first side bonded to said hard book cover and a second side bondable to the spine of the book to position the book between said panel portions, said compressible resilient material having a sufficient thickness and compressibility to compress upon closing of the book while conforming to the shape of the book spine, and to expand upon opening of the book while maintaining continuous contact with the hard book cover and the book spine in response to the changing curvature of the book spine as the book opens and closes, without applying a significant detachment force on the bond between said first side of said compressible resilient material and said hard book cover or the bond between said second side of said compressible resilient material and the book spine under repeated opening and closing of the book, whereby said compressible resilient material conforms to the shape of the book spine and maintains contact therewith as the book spine moves between a concave and a flat or slightly convex shape as the book is opened and closed, respectively, without pulling said compressible resilient material free from said hard book cover or the book spine.

A cover for a book having a plurality of pages, said cover comprising:

• a hard book cover having two spaced-apart stiff panel portions and a flexible hinge portion to allow movement between said panel portions, and allow said panel portions to overlie each other;
• a compressible resilient material positioned between said panel portions, said compressible resilient material having a first side attached to said hard book cover and a second side with a convex shape attachable to the spine of the book to position the book between said panel portions;
• and
• a first longitudinal end guide positioned toward one end of said compressible resilient material and a second longitudinal end guide positioned toward the other end of said compressible resilient material, said first and second end guides permitting alignment of the spine of the book relative to said compressible resilient material in preparation for attachment of the spine thereto.

A method for making a hard cover for a book having a plurality of pages, said method comprising:

• a. supplying a hard book cover having two spaced-apart stiff panel portions and a flexible hinge portion therebetween to allow movement between said panel portions, and allow said panel portions to overlie each other;
• b. supplying a compressible resilient material with a first side bondable to said hard book cover and a second side bondable to the spine of the book, and providing said compressible resilient material with a sufficient thickness and compressibility to compress upon closing of the book while conforming to the shape of the book spine, and to expand upon opening of the book while maintaining continuous contact with the hard book cover and the book spine in response to the changing curvature of the book spine as the book opens and closes, without applying a significant detachment force on the bond between said first side of said compressible resilient material and said hard book cover or the bond between said second side of said compressible resilient material and book spine under repeated opening and closing of the book;
• c. positioning said compressible resilient material between said panel portions;
• and
• d. attaching said first side of said compressible resilient material to said hard book cover.

A method for making a hard cover for a book having a plurality of pages, said method comprising:

• a. supplying a hard book cover having two spaced-apart stiff panel portions and a flexible hinge portion therebetween to allow movement between said panel portions, and allow said panel portions to overlie each other;
• b. supplying a compressible resilient material with a first side attachable to said hard book cover and a second side with a convex shape attachable to the spine of the book, and providing said compressible resilient material with, in cross section, a generally elliptical configuration;
• c. positioning said compressible resilient material between said panel portions;
• and
• d. attaching said first side of said compressible resilient material to said hard book cover.

A method for making a hard cover for a book having a plurality of pages, said method comprising:

• a. supplying a hard book cover having two spaced-apart stiff panel portions and a flexible hinge portion therebetween to allow movement between said panel portions, and allow said panel portions to overlie each other;
• b. supplying a compressible resilient material with a first side attachable to said hard book cover and a second side with a convex shape attachable to the spine of the book;
• c. positioning said compressible resilient material between said panel portions;
• d. attaching said first side of said compressible resilient material to said hard book cover;
• and
• e. supplying first and second longitudinal end guides, and positioning said first end guide toward one end of said compressible resilient material and said second end guide toward the other end of said compressible material, whereby said first and second end guides permit alignment of the spine of the book relative to the compressible resilient material in preparation for attachment of the spine thereto.

An insert attachable to a hard book cover having two spaced-apart panel portions and a flexible hinge portion therebetween, comprising:

• a flexible sheet attachable to the panel portions to allow the panel portions to fold to overlie each other;
• a narrow, stiff piece of material with a configuration typical of that of the spine of a book, said stiff material having a first side, which is convex, and a second side, which is concave, said first side being attached to the inside of said flexible sheet;
• and
• a compressible resilient material, in cross-section, being of a generally elliptical configuration, with a first side connected to said second side of said narrow, stiff piece of material, and a second side attachable to the spine of a book to position the book between the panel portions.