US2671912A

US2671912A - Bookbinding

Info

Publication number: US2671912A
Application number: US150142A
Authority: US
Inventors: William R Stein; Jr Harold J Hyde
Original assignee: Individual
Current assignee: Individual
Priority date: 1950-03-17
Filing date: 1950-03-17
Publication date: 1954-03-16
Anticipated expiration: 1971-03-16

Description

March 6, 1954 w. R. STEIN ET AL BOOKBINDING Filed March 17, 1950 INVENTORS.

WILLIAM R. STEIN HAROLD J. HYDE.JR. BY [4% W ORNEYS.

Patented Mar. 16, 1954 B OKBINDIN G William R. Stein, Teaneck, and Harold J Hyde, Jr., Lyndhurst, N. J.

Application March 17, 1950, Serial No. 150,142

3 Claims.

This invention relates to the art of binding books or similar publications, and its principal object is to provide an improved method of manufacturing to accomplish a strong, square bind without the aid of stitches, slits, backings, etc.

Other objects of the invention as well as the advantages thereof, will appear from the following description when read in connection with the accompanying drawings, in which Fig. 1 is an elevational view of the means for preparing the pages of the book to be secured together; Fig. 2 is a plan view of the parts shown in Fig. 1; Fig. 3 is a perspective view of a book made in accordance with the invention and partly in section to show its construction more clearly, and Figs. 4 to 8 are schematic views illustrating the several process steps of the invention; Fig. 4 indicating the station at which the mechanism of Figs. 1 and 2 is located; Fig. 5 indicating the gluing step; Fig. 6 illustrating the attachment of the cover to the glued sheets of the book; Fig. 7 illustrating the manner in which the cover is clamped to the book and Fig. 8 illustrating the maner in which the bound edge of the book is squared.

In the drawings, the numeral [0 designates generally, one of a series of clamps of the usual construction provided on a horizontal conveyor for continuously moving books along a predetermined path on a bookbinding machine. The book ll supported by the clamp l0 consists of any number of signatures or sheets which are to be bound together. As is shown in Fig. 1 of the drawings, the book II is adjustably positioned in the clamp [0 so that the side thereof to be bound projects or depends a predetermined distance below the bottom edges of the two plates of the clamp. In the case of folios or signatures, the binding edges of the same will so project below the clamp. In the travel of the conveyor, each clamp with a book so supported thereby, moves in a successive fashion over mechanism (see Fig. 4) for preparing the books for the gluing step (Fig. 5). As is shown more clearly in Figs. 1 and 2 of the drawings, such mechanism includes a bracket l2 which is secured in any suitable manner to the frame of the binding machine, so that it extends transversely below the path of movement or travel of the clamps I0 and the books ll supported thereby. The bracket I2 is formed to provide two horizontal vertically-spaced bracket arms l3 and I4 having pairs of horizontally disposed elongated slots designated l5, l5, I6 and IS; the pair of slots is in arm l3 being vertically aligned with respect to the pair of slots E5 in arm l4 and the pair of slots I6 in arm l3 being vertically aligned with respect to the pair of slots IS in arm l4. Adjustably secured to the arms [3 and I4 through slots 15 and It, as by bolts, are a pair of aligned bearing straps or hangers H, H which rotatably receive a vertical shaft I8. The shaft I8 is rotatably and adjustably supported on the hangers H, H through collars l9, l9 which are adjustably secured to shaft l8 intermediate such hangers. In a similar fashion, a pair of hangers or bearing straps 20, 2|! are adjustably secured to the bracket arms I3 and I4 through slots l6, H5, and such straps serve a bearing supports for the vertical shaft 2| which is supported thereon through the collars 22, 22' adjustably secured to shaft 2 l. Connected to the lower end of shaft I8 is a gear wheel 25 which is in mesh with a gear wheel 23 provided on the lower end of shaft 2|. Secured to shaft 2! intermediate the collars 22, 22 is a pulley 21 which supports one end of a drive belt 23 connected at its other end to a pulley 29 provided on the drive shaft of a motor 30. The motor 30 is adjustably mounted on an extension 3| of bracket l2.

It will be understood from the foregoing that the vertical shafts I8 and 2I are rotatably mounted on bracket l2 so that they may be adjusted in either a vertical or horizontal direction; the teeth of

gears

25 and 26 being formed so that a slight horizontal adjustment of such shafts may be obtained without disrupting their driving connection. The shafts l8 and H] are continuously driven through the gears 25, 2B, shaft 2|, pulley 21, belt 28, pulley 29 and motor 30 during the operation of the machine; the arrangement being such that shaft I8 is driven in a clockwise direction and shaft 2| in a counterclockwise direction, as viewed in Fig. 2 of the drawings.

Adjustably secured to the upper threaded end of shaft 18 as by

locknuts

32, 32, are two spaced

discs

33, 33, which are maintained in spaced relation on shaft M3 by an intermediate disc 34 of lesser diameter. The

discs

33, 33 may be from A to /4" thick or any other desirable thickness. The intermediate disc or spacer 34 which has a diameter of approximately one inch less than the diameter of

discs

33, 33 has a thickness which is slightly greater than the thickness of the outer peripheral edge of a blade 35 which projects into the space formed by the three

discs

33, 33 and 3 3 as is shown more clearly in Fig. 1 of the drawings. Spacer 34 may be varied depending upon the thickness of the size of blade 35 used in processing any particular thickness of book and the three discs if desired, may be bolted firmly together to make a rigid, unitary female for the peripheral edge of the blade. The blade 35 is mounted on the upper end of shaft 2! between a pair of

discs

36, 36; the blade and discs being adjustably secured to the threaded end of such shaft by

suitable locknuts

31, 31. The

discs

36, 36 are preferably of the same thickness as the discs 33, B3 and-are aligned with "the latter, so that they will cooperate to keep the book steady during the cutting action of the blade 35. The circular blade 35 has straight teeth 35' contained in the plane of the blade and alternately arranged with teeth 35 which are set to one side only, so that they incline downwardly an'd outwardly when the blade is positioned on shaft 2|, as viewed in Fig. l. The =teethare roughly sharpened so that they do not cut through a stack of sheets with a clean cut.

The above described parts are adjusted for the thickness of the books to be bound so that the spacing between the peripheral edges of

discs

33,33 and

discs

36, 36 is approximately the same as the thickness of such'books, but slightly less than the latter so that such edges are just snug-against the sides of -the-books-as the books are moved therebetweenby the conveyor. Thus, the dis'cs will exert a slightsteadying pressure :on the sides "of the portion of the book projecting below its supporting clamp during the cutting operation. As the conveyor successively moves thebooks H of signatures -or sheets supported by the clamps 10 between'the discs 33, .33 and 38, 36, the teeth of blade 35 which move in the direction of feedof the books will cutor trim oii'the i that the cutend of the book presents'a frayed appearance, such as shown in the portion of the book designated generally by the numeral 38 in :3 of the drawings. The fibers and Jagged portions thus :produced on the closely :superimposed sheets under pressure, are not all individualized, but are in major .portion intertangled and hooked together.

The-clamps i0 'pass =fromthe above described mechanism directly to a gluing device to move the out books without disturbing the sheets thereof overa glue roller! (note Fig. 5) ,-which applies-a coatingof suitable binding glue to' such roughened "cut 'edges -of the *book. The glue is heated so that it is free-flowing and readily-penetratesinto thespaces between the loosenedfibers and jagged..=portions to enclose the same. As a result of this step, the fuzzy :fibers and jagged portions -will be-enibedded in glue and such'glue will reach but not :g'o *substantially beyond the solid partsof the sheets. The appearance of the frayed fibers'and pie'cesof the sheets when embedded in-glueis shown in the bookportiondes ignat'ed generally by th'e numeral-fl-l in-Fig. 3-of the drawings.

From the ;glue roller, the clamps H] in :their travel, bring thezglue'd books successively over a vertically movableLpleltedZ upon which the book covers 43 are-'fe'd (note "Fig. cor tlie drawings, which figure as wellas Figs. '7 and8'show the parts transverse to the line -of travel of the clamps for the sake of clearne'ss). -As :a book moves intmproper.position overiplate-M, the lat- L'il ter is actuated upwardly to press the central portion of the cover blank 43 into engagement with the glued binding edge of the book. At the next station of the machine, two

plates

44, 44 are moved in as shown in Fig. 7 of the drawings to fold and clamp the sides of the cover to the book. Finally, a plate 45 is moved upwardly to square the bound edge of the book. At the end of these operations the finished 'book is discharged from its supporting clamp I0.

While we have hereinabove described and illustrated a preferred form of the invention, it will be apparent to those skilled in the art that various changes and modifications may be made the'r'ein Without departing from the spirit of the lhvlltibn dr the scope of the appended claims.

We claim:

1. Aboo'kb'indin'g machine comprising movable means -for clamping a book of sheets so as to leave exposed in depending relation the edge portion thereof to he bound, a vertically disposed shaft-arranged-on-each sideof the-path of travel of "such exposed edge portion, a circular blade secured to one of said shafts andextending across-said path of travel between the lower edge of such edge portion and said clamping means, said blade having alternately -=offset, roughly sharpened teeth capable -of forming a cut edge -:on such edge i portion having separated fibers and jagged .portions .interentangled and hooked together to an extent as to fasten the out edges; of such-sheets together, .discs mounted on said shaft above and below said blade :and cooperating to .rigidif-y the latter, disc-shaped female means mounted on .said other vertical shaft and having anannular groove into which the peripheral edge of said blade extends, the .annular peripheral sides -of said means above .and belowsaid groove being-in alignment with the peripheral edge portions of said :discs and .said sidesand'edge .portions coacting .to .apply .a .holding pressure on the edge portion passing thembetween, means for rotating -said blade .shait in the same direction as the direction of travel of said book lamps, and means for applying sulficient glue .to embed the interlocked fibers and jagged portions and'to reach but not extendsiibstantially beyond the sdli'd portions of the sheets.

2. Abookb'indingmachinecomprising movable means for clamping a book of sheets so as 'to.

leave exposed a stibs'tantial part of the edgeportion thereof "tobe bound and-movable along a predetermined path, -a circular b'la'de having -an axis of rotation -.offset from such ;path so that the .peripheral edge .portion of such blade extends transversely across the .-path of travel of such exposed book .part andlocate'd"between 'the outer edge of said book part and said clamping means, .said blade having alternately offset, roughly-sharpened teeth capable of forming a cut edge on such book f-part "having separated fibers andjjaggedpaper portions inter-entangled and hook ed together 'to an extent as to fasten the-cutedges of such .shetstogether, means 'for rotating said circularb'la'de in the same direction as the :travel of said clamping means, "coacting means .progressively engaging both sides of such exposed bock partand .on at7least .the

side-cf said blade adjacent said clamping means dition during 'the cutting action of -said blade,

and means-fer applying sufficient glue to embed the interlocked .fibers and .jagged portions and to reach, but not extend substantially, beyond the solid portions of the sheets.

3. A bookbinding machine comprising movable means for clamping a book of sheets so as to leave exposed a substantial part of the edge portion thereof to be bound and movable along a predetermined path, a saw blade constructed and arranged to have its toothed edge portion extend across the path of travel of such exposed book part and located between the outer edge of such book part and said clamping means, said blade having teeth capable of forming a cut edge on such book part having separated fibers and jagged paper portions interentangled and hooked together to an extent as to fasten the cut edges of such sheets together, means for moving said blade so that in its cutting action the teeth thereof are moving in substantially the same direction as the direction of movement of said clamping means, coasting means progressively engaging both sides of such exposed book part References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 45,310 Boardman Dec. 6, 1864 1,248,252 Bredenberg Nov. 27, 1917 1,804,392 Alger May 12, 1931 1,988,208 Martin Jan. 15, 1935 2,555,428 Tuttle June 5, 1951