US698921A - Bookbinding. - Google Patents

Description

UNITED STATES WILLIAM FOLZ, OF CINCINNATI, OHIO.

vBOOKBINDING.

SPECIFICATION forming part of Letters Patent No. 698,921, dated. April. 29, 1902.

Application tiled February 17, 1902. Serial No. 94,508. (No model.)

To LZZ whom t may concern:

Be it known that I, WILLIAu FoLz, a citizen of the United States, residing in the city of Cincinnati, county of Hamilton, and State of Ohio, have invented certain new and useful Improvements in Bookbinding, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification. My improvements relateto a certain novel and useful construction of stitching for fastening the signatures of the book to be bound together, whereby sufficient space is left between the signatures to permit of the book being opened out perfectly iiat.

- In the drawings, Figure l is a perspective view of the signatures, showing the method of binding them together. Fig. 2 is a horizontal section through the middle fold of one of the signatures. Fig. 3 is a perspective view of the signatures notched for binding. Fig. 4 is an end view showing the signatures opened out flat. Fig. 5 is a perspective view, much enlarged, of the double loops used in the binding.

A A are the signatures, provided with notches b b in the usualway,and a. a are the laycords, which are mounted in the sewing-press and the signatures to lbe bound together placed in the press, with the notches b b embracing the cords'. I then secure the stitching-thread c to the second of the lay-cords, and thence running to the outer lay-cord I pass the thread with a double loop around this cord, the loop being such as is shown in Fig. 5. The thread is then passed into the middle fold of the signature through the notched opening and passed out of the second notched opening around the second lay-cord, then into' the signature again and around the third cord, and so on to the farther end, where the same double loop is formed and the stitching-thread pulled tight. A second double loop is then formed for the secondsignature and the thread run Aback through the signature and thefsignatnre .secured to the lay-cords in the same way as in therst signature, a double loop being formed for the outer lay-cord, and for the third signature another double loop is formed at each end, as before. The formation of these double loops in pairs at each end of the signature leaves thethread between the two loops for a spacing-thread between the signatures. This is shown at d in Fig. 1 somewhat exaggerated. The two sets of double loops at each end enable me to secure each signature separately to the lay-cords, so that if the thread should be broken in any of the signatures it will not release any other signature than the one in which the thread is broken. With heavy paper and where more than `the usual number of leaves are used in each signature it will be advisable to use three double loops at each end instead of the two. When all of the signatures have thus been bound to the laycords, the cords are secured in any suitable way to the covers of the book, and the signatures are hinged to the lay-cords without the necessity of pasting the back edges, as is usually done. In securing the intermediate lay-cords to the signatures the crossing of the loopV of the stitching-thread is made on the inner side of the notch in the signature, so that it shall not be bound too closely to the cord.

With this method of sewing the book the th read between the double loops and the spacing of the loops as they touch each other makes a hinged connection with the lay-cords, so that when thus bound the book will open' out and lay perfectly flat, as shown in Fig. 4.

Having thus described my invention, what I claim, and desire to secure by Letters Patshown and described.

WILLIAM FOL-Z.

Witnesses:

GEORGE B. WEIDLER, CHARLES W. HOFFMAN.

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