US3678740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Book sheet testing apparatus
Assignee: Mueller Martini Druckverarbeitungs Systeme AG
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Filing: 1970-06-04
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Granted: 1972-07-25
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Expires: 1990-06-04
Abstract
Abstract Apparatus for testing the strength of connections between the rear edges of sheets and the backs of books comprises an oscillatable table which supports a book in open position and has a slot through which the selected sheet extends downwardly to be engaged by a gripper. Dynamic testing takes place in response to oscillation of the table, and static testing takes place in response to exertion upon the selected sheet of a variable tensional stress which is transmitted by way of the gripper. Both testing operations are terminated in automatic response to extraction of the selected sheet from the back of the book.
Inventors
- 👤 Adolf Schmid
- 👤 Rudolf Kuhni
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:10
CPC Classifications
G; G01; G01M; G01M99/00
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
248 words
Apparatus for testing the strength of connections between the rear edges of sheets and the backs of books, comprising a support for the sheets flanking at least one selected sheet in open position of a book; means for clamping the book to said support; first testing means for subjecting the connection between the selected sheet and the back of the book on said support to dynamic stresses, comprising rocking means for effecting repeated oscillatory movements between the selected sheet and the remainder of the book about an axis which coincides, at least substantially, with the rear edge of the selected sheet while the selected sheet is simultaneously subjected to tensional stresses acting thereon substantially at right angles to said axis, said rocking means comprising motor means operative to oscillate said support and the remainder of the book with reference to the selected sheet, and gripper means operative to engage and to subject the selected sheet to said tensional stresses; and second testing means for subjecting the connection between the selected sheet and the back of the book to static stresses, comprising second motor means operative to vary the tensional stress upon the selected sheet by way of said gripper means, means for rendering said motor means inoperative in response to extraction of the rear edge of the selected sheet from the back of the book on said support, means for indicating the magnitude of tensional stresses upon the selected sheet, and means for indicating the number of oscillations.
Claim 2
Dependent Claim
248 words
Apparatus for testing the strength of connections between the rear edges of sheets and the backs of books, comprising a support for the sheets flanking at least one selected sheet in open position of a book; means for clamping the book to said support; first testing means for subjecting the connection between the selected sheet and the back of the book on said support to dynamic stresses, comprising rocking means for effecting repeated oscillatory movements between the selected sheet and the remainder of the book about an axis which coincides, at least substantially, with the rear edge of the selected sheet while the selected sheet is simultaneously subjected to tensional stresses acting thereon substantially at right angles to said axis, said rocking means comprising motor means operative to oscillate said support and the remainder of the book with reference to the selected sheet, and gripper means operative to engage and to subject the selected sheet to said tensional stresses; and second testing means for subjecting the connection between the selected sheet and the back of the book to static stresses, comprising second motor means operative to vary the tensional stress upon the selected sheet by way of said gripper means, means for rendering said motor means inoperative in response to extraction of the rear edge of the selected sheet from the back of the book on said support, means for indicating the magnitude of tensional stresses upon the selected sheet, and means for indicating the number of oscillations.
Claim 3
Dependent Claim
187 words
Apparatus for testing the strength of connections between the rear edges of sheets and the backs of books, comprising a support for a book; clamping means for securing the book to said support; first testing means for subjecting the connection between at least one selected sheet and the back of the book on said support to dynamic stresses, comprising gripper means for applying to the selected sheet tensional stresses acting in a direction away from the rear edge of such selected sheet and rocking means for oscillating said support and the book thereon with reference to the thus gripped selected sheet, said rocking means including a pulley secured to said support and turnable about an axis which coincides, at least substantially, with the rear edge of the selected sheet, a flexible element trained over saId pulley, and motor means operative to move said flexible element back and forth to thus oscillate said support by way of said pulley; and second testing means for subjecting the connection between at least one selected sheet and the back of the book to static stresses by way of said gripper means.
Claim 4
Dependent Claim
187 words
Apparatus for testing the strength of connections between the rear edges of sheets and the backs of books, comprising a support for a book; clamping means for securing the book to said support; first testing means for subjecting the connection between at least one selected sheet and the back of the book on said support to dynamic stresses, comprising gripper means for applying to the selected sheet tensional stresses acting in a direction away from the rear edge of such selected sheet and rocking means for oscillating said support and the book thereon with reference to the thus gripped selected sheet, said rocking means including a pulley secured to said support and turnable about an axis which coincides, at least substantially, with the rear edge of the selected sheet, a flexible element trained over saId pulley, and motor means operative to move said flexible element back and forth to thus oscillate said support by way of said pulley; and second testing means for subjecting the connection between at least one selected sheet and the back of the book to static stresses by way of said gripper means.
Claim 5
Dependent Claim
36 words
Apparatus as defined in claim 2, wherein said first testing means further comprises a reciprocable carriage and said flexible element has end portions connected to said carriage, said motor means being arranged to reciprocate said carriage.
Claim 6
Dependent Claim
28 words
Apparatus as defined in claim 3, wherein said flexible element is a metallic band and further comprising a crank drive interposed between said motor means and said carriage.
Claim 7
Dependent Claim
181 words
Apparatus for testing the strength of connections between the rear edges of sheets and the backs of books, comprising a support for the sheets flanking at least one selected sheet in the open position of a book; means for clamping the book to said support; first testing means for subjecting the connection between the selected sheet and the back of the book on said support to dynamic stresses, comprising rocking means for effecting repeated oscillatory movements between the selected sheet and the remainder of the book on said support about an axis which coincides, at least substantially, with the rear edge of the selected sheet and gripper means operative to engage and subject the selected sheet to tensional stresses; and second testing means for subjecting the connection between said selected sheet and the back of the book on said support to static stresses, comprising means for varying the tensional stress upon the selected sheet by way of said gripper means while the connection between the selected sheet and the back of the book on said support is subjected to dynamic stresses.
Claim 8
Dependent Claim
181 words
Apparatus for testing the strength of connections between the rear edges of sheets and the backs of books, comprising a support for the sheets flanking at least one selected sheet in the open position of a book; means for clamping the book to said support; first testing means for subjecting the connection between the selected sheet and the back of the book on said support to dynamic stresses, comprising rocking means for effecting repeated oscillatory movements between the selected sheet and the remainder of the book on said support about an axis which coincides, at least substantially, with the rear edge of the selected sheet and gripper means operative to engage and subject the selected sheet to tensional stresses; and second testing means for subjecting the connection between said selected sheet and the back of the book on said support to static stresses, comprising means for varying the tensional stress upon the selected sheet by way of said gripper means while the connection between the selected sheet and the back of the book on said support is subjected to dynamic stresses.
Claim 9
Dependent Claim
28 words
Apparatus as defined in claim 5, wherein said rocking means comprises means for oscillating said support and the remainder of the book with reference to the selected sheet.
Claim 10
Dependent Claim
30 words
Apparatus as defined in claim 5, wherein said support has a surface against which the sheets flanking the selected sheet abut and wherein said axis is parallel to said surface.
Claim 11
Dependent Claim
71 words
Apparatus as defined in claim 5, wherein, said support has a surface against which the sheets flanking the selected sheet abut and provided with a slot through which the selected sheet extends, the width of said slot being a multiple of the thickness of a sheet and said slot being at least substantially parallel to the rear edge of the selected sheet in clamped position of the book on said support.
Claim 12
Dependent Claim
22 words
Apparatus as defined in claim 5, wherein said gripper means is arranged to maintain the selected sheet in a substantially vertical plane.
Claim 13
Dependent Claim
15 words
Apparatus as defined in claim 9, wherein said gripper means is disposed below said support.
Claim 14
Dependent Claim
40 words
Apparatus as defined in claim 9, wherein said gripper means forms part of a parallel motion which further includes substantially vertical links connected with said gripper means, and further comprising guide means defining a substantially vertical path for said links.
Claim 15
Dependent Claim
64 words
Apparatus as defined in claim 11, wherein said stress varying means of said second testing means comprises a balance arm tiltable about a predetermined axis and operatively connected with said parallel motion to urge said gripper means downwardly with a variable force and to thus subject the selected sheet to tensional stresses acting substantially at right angles to the rear edge of such sheet.
Claim 16
Dependent Claim
58 words
Apparatus as defined in claim 12, wherein said balance arm includes a first portion at one side of said predetermined axis and a second portion at the other side of said predetermined axis, said first portion being operatively connected with said parallel motion and said second testing means further comprising a weight movable lengthwise of said first portion.
Claim 17
Dependent Claim
35 words
Apparatus as defined in claim 13, wherein said second testing means further comprises motor means mounted on said secoNd portion of said balance arm and arranged to move said weight lengthwise of said first portion.
Claim 18
Dependent Claim
52 words
Apparatus as defined in claim 14, wherein said motor means comprises an externally threaded output shaft and said weight includes an internally threaded portion meshing with said output shaft to effect movement of said weight lengthwise of the first portion of said balance arm in response to rotation of said output shaft.
Claim 19
Dependent Claim
53 words
Apparatus as defined in claim 5, wherein each of said testing means comprises an electric motor and further comprising normally closed switch means in circuit with said motors and means for opening said switch means in response to extraction of the rear edge of the selected sheet from the back of the book.
Claim 20
Dependent Claim
60 words
Apparatus as defined in claim 16, wherein said stress varying means of said second testing means comprises a balance arm tiltable about a predetermined axis and means for applying to the selected sheet tensional stresses whose magnitude varies in response to tilting of said balance arm, said means for opening said switch means including a counterweight on said balance arm.
References Cited (Backward Citations)
US2007286A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-25 | 1976-01-24 | 1976-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-25 | 1980-01-24 | 1980-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-25 | 1984-01-24 | 1984-07-25 | $7700.00 | Window Closed / Lapsed |