Nova Patents
US1979475A

Fly book

Abstract

This record has no abstract on file.

US1979475A, drawing sheet 1
Sheet 1 of 2

Term

Term ended

Expired 6 November 1951, 74.9 years ago.

  1. Priority and filed
  2. Granted
  3. Expired
  4. Today

2 claims: 2 independent, 0 dependent

  1. 1
    What I claim is:45 1. In a book including a cover and enclosed leaves, a pintle;hinge loops on the leaves and embracing said pintle to anchor together the leaves and pintle in a detachable unit;and a mounting for the pintle comprising a slightly 50 flexible, resilient metal strip extending vertically along the back portion of the book cover and secured thereto and having forwardly extending ears at its opposite ends provided with retaining, recesses to receive the ends of the pintle and hold it in operative position, said strip being curved transversely along its length between said 80 ears to stiffen it and the ears having junctures with the strip conforming to the transverse curvature of the strip to stiffen the junctures, the strip being flexible along its length between said ears by outward pressure upon either ear to 85 thereby permit outward displacement of the ear for insertion of the pintle ends into said retaining recesses and removal of the pintle ends therefrom, the strip being adapted by its resilience to restore the displaced ear to normal position, and 90 the retaining recesses and pintle ends being’mutually formed to cooperate for reception of the pintle ends interchangeably by the recesses, to permit of endwise reversal of the pintle and leaves in the book. 95
  2. 2
    In a book including a cover and enclosed leaves, a hinge structure anchoring together the .eaves in a detachable unit and having supporting projections at the upper and lower ends of the unit;and a mounting for the hinge structure 100 comprising a slightly flexible, resilient strip expending vertically along the back portion of the book cover and secured thereto and having forwardly extending ears at its opposite ends provided with retaining recesses to receive said sup- 105 porting projections of the hinge structure to hold the hinge structure in operative position, said strip being bent transversely along its length between said ears to stiffen it, and the ears having junctures with the strip conforming to the 110 transverse bend of the strip to stiffen the junctures, the strip being flexible along its length between the ears by outward pressure upon either ear to thereby permit outward displacement of the ear for insertion of said supporting projec- 115 tlons into said retaining recesses and removal of said projections therefrom, the strip being adapted by its resilience to restore the displaced ear to normal position, and the retaining recesses and supporting projections being mutually 120 formed to cooperate for reception of the supporting projections interchangeably by the recesses, to permit of endwise reversal of the hinge structure and leaves in the book. __ 225 WALTER L. KNETTLES. 130 135 140 70 , 145 150