Rounding and backing machine

From Multilingual Bookbinding Dictionary
Jump to: navigation, search

This is a work in progress. Please be aware that there may be errors or incorrect translations, including spelling or transcription errors.

If you'd like to become a wiki editor and participate in the project, please send an email to Suzy, and include your desired user name in the email. You can also send suggestions for corrections, new words to be added, or compliments too!



Zaehnsdorf, Joseph W. The Art of Bookbinding: A Practical Treatise. London: G. Bell & Sons, 1880. Online resource.


"A bookbinding machine which performs the two operations of rounding the spine of a text block and forming the shoulders for the boards. The book is placed in the machine fore edge down, and is drawn along until it arrives over a forming bar, where it is gripped between facing rollers revolving in opposite directions while the bar is pushed up against the fore edge. The two sides of the text block are dragged downwards while the middle is being pushed up, forming an arc of approximately one-third of a circle. The text block is gripped between jaws that serve the same function as the backing boards in hand backing, and a rocker above swings in an arc against the spine, finishing off the rounding and forming the shoulders. The rocker is a heavy piece of metal with a concave edge, and is brought down until the concave is in contact with the spine." [1]


Related terms

rounding, backing, Job backer


  • Danish: (translation needed)
  • Dutch: (translation needed)
  • French: (translation needed)
  • German: (translation needed)
  • Italian: (translation needed)
  • Latin: (translation needed)
  • Spanish: (translation needed)
  • Swedish: (translation needed)


  1. Roberts, Don., et al. Bookbinding and the Conservation of Books : a Dictionary of Descriptive Terminology. Library of Congress : For Sale by the Supt. of Docs., U.S. G.P.O., 1982.