(19)
(11) EP 0 110 237 A1

(12) EUROPEAN PATENT APPLICATION

(43) Date of publication:
13.06.1984 Bulletin 1984/24

(21) Application number: 83111432.7

(22) Date of filing: 15.11.1983
(51) International Patent Classification (IPC)3B42D 3/00
(84) Designated Contracting States:
BE DE FR GB IT NL SE

(30) Priority: 02.12.1982 CH 7023/82

(71) Applicant: Bostitch AG
CH-8037 Zürich (CH)

(72) Inventor:
  • Ernst, Friedrich
    CH-8708 Männedorf (CH)

(74) Representative: Blum, Rudolf Emil Ernst et al
c/o E. Blum & Co Patentanwälte Vorderberg 11
8044 Zürich
8044 Zürich (CH)


(56) References cited: : 
   
       


    (54) Binder and stapled sheet assembly thereof


    (57) @ A binder for retaining a plurality of sheets in a condition to be individually viewed comprising front and rear covers, front and rear staple covering sections hinged to the front and rear covers respectively along first fold lines, and front and rear staple receiving sections hinged to the front and rear staple covering sections respectively along second fold lines. Each of the staple receiving sections has an outer surface and an opposed inner surface against which a margin of the sheets is retained by staples extending through the margin of the sheets and the staple receiving sections with the staples being secured against the outer surfaces of the staple receiving sections. Each of the staple covering sections is operable to be hinged with respect to the associated staple receiving section between a staple attaching position extending away from the outer surface of the associated staple receiving section so as to permit the securement of the staple as aforesaid and a staple covering position wherein an inner surface thereof is disposed in abutting relation to the outer surface of the associated staple receiving section. A pressure sensitive adhesive coating with a detachable masking strip is applied to each of the staple covering sections for adhesively retaining the staple covering sections in their staple covering positions.


    Description


    [0001] This invention relates to binders and more particularly to binders of the type adapted to receive a plurality of sheets which are secured in the binder in a condition to be individually viewed by fasteners, particularly staples.

    [0002] There are many situations where it is desired to retain a group of sheets in a binder so that the sheets will be held in a condition to be individually viewed. Such binders also usually provide front and rear covers for the sheets.

    [0003] The usual letter or legal size of paper sheets and covers provided therefor is such that ordinary desk staples cannot be used to effect securement of the sheets within the binder unless the staples are extended through the margin of the covers and sheets with the crowns and clinched legs' secured against the exterior surfaces of the covers. This construction results in the staples being exteriorly exposed presenting the possibility that the staples, and particularly the clinched ends of the legs thereof, can become engaged with other sheet-like elements, causing inconvenience and sometimes unwanted problems.

    [0004] In order to effect staple securement interiorly of the covers it is necessary to have a deep throated stapling device such as utilized in printing shops, since the depth of the throat of the conventional desk stapler is simply not big enough. Because these deep-throated staplers are not readily available, it has been the practice heretofore when interior securement is desired to utilize other types of paper fasteners. The most common fasteners utilized are of the type having flat double element shanks or the like which require that the papers be initially punched before securement can be effected. After being engaged through the preformed holes the flat double element shanks are bent over in opposite directions to effect final securement. The necessity to punch holes in the papers, align the holes, manually handle, insert and bend down each fastener individually is time consuming and inconvenient. Moreover, while the final assembly does not expose any fastener parts exteriorly, they are exposed interiorly.

    [0005] The use of staples and conventional desk stapling devices to effect securement obviates these inconveniences but presents the problem of exterior staple exposure, as aforesaid. In order to alleviate this latter problem it has been proposed to cover the exteriorly exposed staples with adhesive strips but this arrangement itself adds assembly time and further inconvenience and cost.

    [0006] It is an object of the present invention to provide a binder which will alleviate the above problem in a convenient and economical fashion. In accordance with the principles of the present invention this objective is obtained by providing a binder which preferably includes a front cover, a rear cover, front and rear fastener covering sections hinged to the front and rear covers respectively along first fold lines and front and rear fastener receiving sections hinged to the front and rear fastener covering sections respectively along second fold lines. Each of the fastener receiving sections has an outer surface and an opposed inner surface against which a margin of the sheets is retained by fastener means preferably in the form of a staple or staples extending through the margin of the sheets and the staple receiving sections with the fastener being secured against the outer surfaces of the fastener receiving sections. Each of the fastener covering sections is operable to be hinged with respect to the associated fastener receiving sections between a fastener attaching position extending away from the outer surface of the associated fastener receiving section so as to permit the securement of the fastener or staple as aforesaid and a fastener covering position wherein an inner surface thereof is disposed in abutting relation to the outer surface of the associated fastener receiving section. A conveniently activatable adhesive means, preferably a coating of pressure-sensitive adhesive having a detachable masking strip initially covering the same, is operable between the inner surface of each fastener covering section and the outer surface of the associated fastener receiving section after- the fastener or staple has been secured through the fastener receiving sections with the fastener covering sections in their fastener attaching positions as aforesaid, and the fastener covering sections have been moved into their fastener covering positions for adhesively retaining the fastener covering sections in their fastener covering positions. Preferably the covers and sections of the binder are formed integrally from one sheet of material with the front and rear fastener receiving sections being hingedly interconnected along a common fold line which is parallel to the fold lines associated with the fastener covering sections.

    [0007] Another object of the present invention is the provision of an assembly embodying a binder of the type described in cooperative relation with a plurality of sheets and a staple which is simple in construction, economical to manufacture and effective in operation.

    [0008] These and other objects of the present invention will become more apparent during the course of the following detailed description and appended claims.

    [0009] The invention may best be understood with reference to the accompanying drawings, wherein an illustrative embodiment is shown.

    [0010] In the drawings:

    Figure 1 is a perspective view of a binder embodying the principles of the present invention showing the same in a position intermediate its initial position and its final assembly position;

    Figure 2 is an end view illustrating the binder in its initial position with a plurality of sheets mounted therein illustrating the manner in which the staples are mounted in securing relation with respect to the sheets and binder;

    Figure 3 is an enlarged fragmentary sectional view illustrating the binder in its finally assembled position; and

    Figure 4 is a fragmentary sectional view taken along the line 4-4 of Figure 3.



    [0011] Referring now more particularly to the drawings, there is shown in Figure 1 thereof a binder embodying the principles of the present invention which consists essentially of front and rear covers 1 and 2 joined by a back 3. In the embodiment shown the entire binder has been cut from one sheet of material or blank. A longitudinal fold 4 defining two staple receiving sections is formed in the back 3 by a rear fold line 5 extending throughout the central portion thereof. As best shown in Figure 2, the documents or plurality of sheets 19 which are to be retained in the binder are inserted into the fold 4 so that the front and rear sheets abut the inside surfaces of the staple receiving section of the fold along their marginal edge portions. After the sheets 19 have been inserted into the fold 4 as aforesaid, one or preferably three staples 20 are driven and clinched through the staple receiving sections of the fold 4 and the margins of the sheets 19. Figure 1 illustrates in dotted lines the ideal positions 16, 17 and 18 for the staples.

    [0012] As best shown in Figure 4, it will be noted that the crown of each staple 20 engages the opposite outer surface of the forward staple receiving section defined by the fold 4 while the opposite outer surface of the rear staple receiving section of the fold 4 has the free ends of the legs of the staples clinched into engagement therewith.

    [0013] In the embodiment shown, the binder also includes front and rear staple covering sections 12 and 13 respectively which must be hinged or folded back onto the corresponding sections of the fold 4. The front and rear staple covering sections, in addition to being hinged to the respectively front and rear staple receiving sections of the fold 4, are also hinged to the front and rear covers 1 and 2 respectively. As shown, fold lines 6 and 7 define parallel edges of the front staple covering section 12 and serve to hinge the section 12 to the associated section of the fold 4 and the front cover 1, respectively. Similarly, fold lines 8 and 9 define parallel edges of the rear staple covering section 13 and serve to hinge the section 13 to the associated section of the fold 4 and rear cover 2 respectively. The hinging action provided by the fold lines enables the staple covering sections to be moved between staple attaching positions shown in Figure 2. wherein the same extend away from the outer surface of the adjacent sections of the fold 4 so as to permit the staples to be driven through the latter and fastener covering positions wherein an inner surface of the staple covering sections 12 and 13 are disposed in abutting relation to the outer surfaces of the associated staple receiving sections of the fold 4.

    [0014] In accordance with the principles of the present invention, the inner surfaces of the staple covering sections 12 and 13 have a pressure-sensitive adhesive coating 10 and 11 respectively applied thereto. The exposed surfaces of the adhesive coatings 10 and 11 are protected by detachable masking foils or strips 15 and 16 respectively.

    [0015] After stapling the plurality of papers 19 within the fold 4, as shown in Figure 2, the assembly is completed by first removing the masking foils 14 and 15 exposing the pressure-sensitive adhesive coatings 10 and 11.

    [0016] The staple covering sections 12 and-13 are then hinged or folded back along fold lines 6 and 8 into their staple covering positions wherein the pressure sensitive adhesive coatings on the inner surface thereof engage the abutting outer surface of the staple receiving sections of the fold 4 so as to effect an adhesive securement of the surfaces in abutting relation and to firmly retain the staple covering sections in covering relation to the associated exposed portions of the staples engaged with the inner surfaces of the staple receiving sections of fold 4.

    [0017] The binder is normally sold folded solely along fold line 5. Sections 12 and 13 are hinged along their fold lines 6, 7, 8 and 9 just prior or subsequent to the stapling of the papers to the fold 4, as shown in Figure 2, by hinging or folding the same along the fold lines 6, 7, 8 and 9.

    [0018] It thus will be seen that the objects of this invention have been fully and effectively accomplished. It will be realized, however, that the foregoing preferred specific embodiment has been shown and described for the purpose of illustrating the functional and structural principles of this invention and is subject to change without departure from such principles. Therefore, this invention includes all modifications encompassed within the spirit and scope of the following claims.


    Claims

    1. A binder for retaining a plurality of sheets in a condition to be individually viewed which comprises

    a cover.,

    a fastener covering section hinged to said cover along a first fold line,

    a fastener receiving section hinged to said fastener covering section along a second fold line,

    said fastener receiving section having an outer surface and an opposed inner surface against which a margin of the sheets is retained by fastener means extending through the margin of the sheets and said staple receiving section with said fastener means being secured against the outer surface of said fastener receiving section,

    said fastener covering section being operable to be hinged with respect to said fastener receiving section between a fastener attaching position extending away from the outer surface of said fastener receiving section so as to permit the securement of said fastener means as aforesaid and a fastener covering position wherein an inner surface thereof is disposed in abutting relation to the outer surface of said fastener receiving section, and

    adhesive means operable between the inner surface of said fastener covering section and the outer surface of said fastener receiving section after said fastener means has been secured through said fastener receiving section with said fastener covering section in said fastener attaching position as aforesaid and said fastener covering section has been moved into said fastener covering position for adhesively retaining said fastener covering section in said fastener covering position.


     
    2. A binder as defined in claim 1 wherein said adhesive means comprises a pressure sensitive adhesive initially coated on one of said abutting surfaces and a detachable masking strip initially covering the same.
     
    3. A binder as defined in claim 2 wherein said pressure sensitive adhesive is initially coated on the inner surface of said fastener covering section.
     
    4. A binder for retaining a plurality of sheets in a condition to be individually viewed which comprises

    a front cover,

    a rear cover,

    front and rear fastener covering sections hinged to said front and rear covers respectively along first fold lines,

    front and rear fastener receiving sections hinged to said front and rear fastener covering sections respectively along second fold lines,

    each of said fastener receiving sections having an outer surface and an opposed inner surface against which a margin of the sheets is retained by fastener means extending through the margin of the sheets and said fastener receiving sections with said fastener means being secured against the outer surfaces of said fastener receiving sections,

    each of said fastener covering sections being operable to be hinged with respect to the associated fastener receiving section between a fastener attaching position extending away from the outer surface of the associated fastener receiving section so as to permit the securement of said fastener means as aforesaid and a fastener covering position wherein an inner surface thereof is disposed in abutting relation to the outer surface of the associated fastener receiving section, and

    adhesive means operable between the inner surface of each of said fastener covering sections and the outer surface of the associated fastener receiving section after said fastener means has been secured through said fastener receiving sections with said fastener covering sections in their fastener attaching positions as aforesaid and said fastener covering sections have been moved into their fastener covering positions for adhesively retaining said fastener covering sections in said fastener covering positions.


     
    5. A binder as defined in claim 4 wherein said covers and said sections are formed integrally from one sheet of material, said front and rear fastener receiving sections being hingedly interconnected along a common fold line which is parallel to the aforesaid first and second fold lines.
     
    6. A binder as defined in claim 5 wherein said adhesive means comprises a coating of pressure-sensitive adhesive initially applied on one of each pair of abutting surfaces and a detachable masking strip initially covering each pressure-sensitive adhesive coating.
     
    7. A binder as defined in claim 6 wherein said pressure-sensitive adhesive coatings are initially applied on the inner surfaces of said front and rear fastener covering sections.
     
    8. An assembly comprising

    a plurality of sheets and a binder for retaining the sheets in a condition to be individually viewed,

    said binder including a front cover, a staple covering section hinged to said front cover along a first fold line, and a staple receiving section hinged to said staple covering section along a second fold line,

    said staple receiving section having an outer surface and an opposed inner surface disposed against a margin of the forwardmost sneet,

    a staple having a crown and a pair of legs,

    said staple legs extending through the sheets and said staple receiving section and having the free ends thereof clinched over the outer surface of said staple receiving section.

    said staple covering section including an inner surface extending over the clinched free ends of said staple and in abutting relation with the outer surface of said staple receiving section, and

    adhesive means operable between the outer surface of said staple receiving section and the inner surface of said staple covering section for adhesively retaining the latter over the clinched free ends of said staple and in abutting relation with the outer surface of said staple receiving section.


     
    9. An assembly comprising

    a plurality of sheets and a binder for retaining the sheets in a condition to be individually viewed,

    said binder including a front cover, a rear cover, front and rear staple covering sections hinged to said front and rear covers respectively along first fold lines and front and rear staple receiving sections hinged to said front and rear staple covering sections respectively along second fold lines,

    each of said staple receiving sections having an outer surface and an opposed inner surface disposed against a margin of an adjacent sheet,

    a staple having a crown and a pair of legs,

    said staple legs extending through the sheets and said staple receiving sections and having the free ends thereof clinched over the outer surface of one of said staple receiving sections and the crown engaged with the outer surface of the other of said staple receiving sections,

    each of said staple covering sections including an inner surface disposed in abutting relation with the outer surface of the associated staple receiving section and extending over the associated portion of the staple engaged therewith, and

    adhesive means operable between the outer surface of each staple receiving section and the inner surface of the associated staple covering section for adhesively retaining the latter in abutting relation with the outer surface of the associated staple receiving section and over the associated portion of the staple engaged therewith.


     
    10. A binder as defined in claim 9 wherein said covers and said sections are formed integrally from one sheet of material, said front and rear fastener receiving sections being hingedly interconnected along a common fold line which is parallel to the aforesaid first and second fold lines.
     




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