US3763799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for connecting superimposed layers of sheet material and apparatus for carrying out the method
Assignee: Sächsisches Institut für die Druckindustrie
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Filing: 1971-12-30
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Granted: 1973-10-09
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Expires: 1991-12-30
Abstract
Abstract Stacks of superimposed sheet material are moved at identical spacing sequentially underneath the peripher of a rotating drive. A thread, from which thread staples for connecting the sheet material are to be made, is withdrawn from a bobbin and supplied to the disc where it is engaged and circumferentially entrained. The thread is severed into lengths from each of which one or more thread staples can be made; in the latter case, the length is further subdivided into sections which each correspond to one thread staple length. The thus-obtained thread staples are stitched through the sheet material of a proximal stack. When the thread staples are not to be made sequentially but at intervals, and in the intervals between successive stacks, the supply of thread to the disc is interrupted.
Inventors
- 👤 W Bottcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:11
CPC Classifications
B; B42; B42B; B42B4/00
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
115 words
A method of connecting superimposed sheet material by thread staples, comprising the steps of continuously moving stacks of superimposed sheet material past a connecting station; withdrawing thread from a source and supplying it to said connecting station; severing the thread at said connecting station into lengths each requisite for forming at least one thread staple; stitching said lengths through said stacks so as to form thread staples connecting the sheet material thereof; and interrupting supply of thread to said connecting station during continued movement of said stacks of superimposed sheet material at such times at which no thread staples are to be stitched through said stacks which are continuously being moved past said connecting station.
Claim 2
Independent Claim
115 words
A method of connecting superimposed sheet material by thread staples, comprising the steps of continuously moving stacks of superimposed sheet material past a connecting station; withdrawing thread from a source and supplying it to said connecting station; severing the thread at said connecting station into lengths each requisite for forming at least one thread staple; stitching said lengths through said stacks so as to form thread staples connecting the sheet material thereof; and interrupting supply of thread to said connecting station during continued movement of said stacks of superimposed sheet material at such times at which no thread staples are to be stitched through said stacks which are continuously being moved past said connecting station.
Claim 3
Dependent Claim
133 words
In an apparatus for connecting stacked superimposed sheet material by thread staples, in combination, feeding means for continuously feeding stacks of said superimposed sheet material; supply means for supplying a thread; rotary disc means, continuously rotating with a peripheral speed corresponding to the feeding speed of said stacks of superimposed sheet material, said rotary disc means having a periphery for receiving said thread; stitching means for stitching lengths of said thread through respective stacks of said superimposed sheet material; severing means for severing from said thread requisite lengths for conversion by said stitching means into thread staples; and control means for interrupting the supply of thread to said severing means at such times as no thread staples are to be stitched through said stacks which are continuously being moved past said stitching means.
Claim 4
Dependent Claim
133 words
In an apparatus for connecting stacked superimposed sheet material by thread staples, in combination, feeding means for continuously feeding stacks of said superimposed sheet material; supply means for supplying a thread; rotary disc means, continuously rotating with a peripheral speed corresponding to the feeding speed of said stacks of superimposed sheet material, said rotary disc means having a periphery for receiving said thread; stitching means for stitching lengths of said thread through respective stacks of said superimposed sheet material; severing means for severing from said thread requisite lengths for conversion by said stitching means into thread staples; and control means for interrupting the supply of thread to said severing means at such times as no thread staples are to be stitched through said stacks which are continuously being moved past said stitching means.
Claim 5
Independent Claim
106 words
A method of connecting superimposed sheet material by thread staples, comprising the steps of moving a stack of superimposed sheet material past a connecting station; withdrawing thread from a source and supplying it to said connecting station; severing the thread at said connecting station into lengths each corresponding to at least two thread staples; subdividing each length into sections which are respectively requisite for forming a single thread staple; stitching said lengths through said stack so as to form thread staples connecting the sheet material thereof; and interrupting withdrawal of thread from said source at such times at which no thread staples are to be formed.
Claim 6
Independent Claim
106 words
A method of connecting superimposed sheet material by thread staples, comprising the steps of moving a stack of superimposed sheet material past a connecting station; withdrawing thread from a source and supplying it to said connecting station; severing the thread at said connecting station into lengths each corresponding to at least two thread staples; subdividing each length into sections which are respectively requisite for forming a single thread staple; stitching said lengths through said stack so as to form thread staples connecting the sheet material thereof; and interrupting withdrawal of thread from said source at such times at which no thread staples are to be formed.
Claim 7
Independent Claim
133 words
A method of connecting superimposed sheet material by thread staples, comprising the steps of moving a stack of superimposed sheet material past a connecting station; withdrawing thread from a source; and forming it upstream of said connecting station into loops each having a length requisite for forming at least one thread staple; clamping each loop at the upstream end thereof; supplying the thread constituting the respective loop to said connecting station while terminating the step of clamping; severing the thread at said connecting station into lengths each requisite for forming at least one thread staple; stitching said lengths through said stack so as to form thread staples connecting the sheet material thereof; and interrupting withdrawal of the thread from said source at such times at which no thread staples are to be formed.
Claim 8
Independent Claim
133 words
A method of connecting superimposed sheet material by thread staples, comprising the steps of moving a stack of superimposed sheet material past a connecting station; withdrawing thread from a source; and forming it upstream of said connecting station into loops each having a length requisite for forming at least one thread staple; clamping each loop at the upstream end thereof; supplying the thread constituting the respective loop to said connecting station while terminating the step of clamping; severing the thread at said connecting station into lengths each requisite for forming at least one thread staple; stitching said lengths through said stack so as to form thread staples connecting the sheet material thereof; and interrupting withdrawal of the thread from said source at such times at which no thread staples are to be formed.
Claim 9
Dependent Claim
101 words
In an apparatus for connecting stacked superimposed sheet material by thread staples, comprising supply means for supplying a thread; rotary disc means having a periphery for receiving said thread; stitching means for stitching lengths of said thread through said superimposed sheet material; severing means for severing from said thread requisite lengths for conversion by said stitching means into thread staples; and control means for interrupting the supply of thread to said severing means at such times as no thread staples are to be formed by said stitching means, said control means being interposed between said supply means and said disc means.
Claim 10
Dependent Claim
101 words
In an apparatus for connecting stacked superimposed sheet material by thread staples, comprising supply means for supplying a thread; rotary disc means having a periphery for receiving said thread; stitching means for stitching lengths of said thread through said superimposed sheet material; severing means for severing from said thread requisite lengths for conversion by said stitching means into thread staples; and control means for interrupting the supply of thread to said severing means at such times as no thread staples are to be formed by said stitching means, said control means being interposed between said supply means and said disc means.
Claim 11
Dependent Claim
122 words
In an apparatus for connecting staCked superimposed sheet material by thread staples, comprising supply means for supplying a thread; rotary disc means having a periphery for receiving said thread; stitching means for stitching lengths of said thread through said superimposed sheet material; severing means for severing from said thread requisite lengths for conversion by said stitching means into thread staples; and control means for interrupting the supply of thread to said severing means at such times as no thread staples are to be formed by said stitching means, said control means comprising at least one thread clamp for clampingly engaging said thread, and said severing means being located intermediate said thread clamp and said disc means in the region of the latter.
Claim 12
Dependent Claim
122 words
In an apparatus for connecting staCked superimposed sheet material by thread staples, comprising supply means for supplying a thread; rotary disc means having a periphery for receiving said thread; stitching means for stitching lengths of said thread through said superimposed sheet material; severing means for severing from said thread requisite lengths for conversion by said stitching means into thread staples; and control means for interrupting the supply of thread to said severing means at such times as no thread staples are to be formed by said stitching means, said control means comprising at least one thread clamp for clampingly engaging said thread, and said severing means being located intermediate said thread clamp and said disc means in the region of the latter.
Claim 13
Dependent Claim
29 words
In an apparatus as defined in claim 6, said control means further comprising thread withdrawing means upstream of said severing means, for incrementally withdrawing thread from said supply means.
Claim 14
Dependent Claim
134 words
In an apparatus for connecting stacked superimposed sheet material by thread staples, comprising supply means for supplying a thread; rotary disc means having a periphery receiving said thread; stitching means for stitching lengths of said thread through said superimposed sheet material; severing means for severing from said thread requisite lengths for conversion by said stitching means into thread staples; control means for interrupting the supply of thread to said severing means at such times as no thread staples are to be formed by said stitching means, said control means comprising feed means for receiving increments of thread from said supply means and feeding them to said disc means; and additional severing means cooperating with said feed means for severing said increments from said thread prior to supplying of such increments to said disc means.
Claim 15
Dependent Claim
134 words
In an apparatus for connecting stacked superimposed sheet material by thread staples, comprising supply means for supplying a thread; rotary disc means having a periphery receiving said thread; stitching means for stitching lengths of said thread through said superimposed sheet material; severing means for severing from said thread requisite lengths for conversion by said stitching means into thread staples; control means for interrupting the supply of thread to said severing means at such times as no thread staples are to be formed by said stitching means, said control means comprising feed means for receiving increments of thread from said supply means and feeding them to said disc means; and additional severing means cooperating with said feed means for severing said increments from said thread prior to supplying of such increments to said disc means.
Claim 16
Dependent Claim
19 words
In an apparatus as defined in claim 8, wherein said additional severing means is carried by said feed means.
Claim 17
Dependent Claim
39 words
In an apparatus as defined in claim 8, said feed means comprising a rotatable disc member having a peripheral length greater than said requisite length, and rotating at a peripheral speed smaller than that of said rotary disc means.
Claim 18
Dependent Claim
99 words
In an apparatus for connecting stacked superimposed sheet material by thread staples, comprising supply means for supplying a thread; rotary disc means having a periphery for receiving said thread; stitching means for stitching lengths of said thread through said superimposed sheet material; severing means for severing from said thread requisite lengths for conversion by said stitching means into thread staples; and control means for interrupting the supply of thread to said severing means at such times as no thread staples are to be formed by said stitching means, said control means comprising rockable gripper means, and additional severing means.
Claim 19
Dependent Claim
99 words
In an apparatus for connecting stacked superimposed sheet material by thread staples, comprising supply means for supplying a thread; rotary disc means having a periphery for receiving said thread; stitching means for stitching lengths of said thread through said superimposed sheet material; severing means for severing from said thread requisite lengths for conversion by said stitching means into thread staples; and control means for interrupting the supply of thread to said severing means at such times as no thread staples are to be formed by said stitching means, said control means comprising rockable gripper means, and additional severing means.
Claim 20
Dependent Claim
117 words
In an apparatus for connecting stacked superimposed sheet material by thread staples, comprising supply means for supplying a thread; rotary disc means having a periphery for receiving said thread; stitching means for stitching lengths of said thread through said superimposed sheet material; severing means for severing from said thread requisite lengths for conversion by said stitching means into thread staples; and control means for interrupting the supply of thread to said severing means at such times as no thread staples are to be formed by said stitching means, said control means comprising thread guide means upstream of said disc means, and additional severing means for severing said thread intermediate said thread guide means and said disc means.
Claim 21
Dependent Claim
117 words
In an apparatus for connecting stacked superimposed sheet material by thread staples, comprising supply means for supplying a thread; rotary disc means having a periphery for receiving said thread; stitching means for stitching lengths of said thread through said superimposed sheet material; severing means for severing from said thread requisite lengths for conversion by said stitching means into thread staples; and control means for interrupting the supply of thread to said severing means at such times as no thread staples are to be formed by said stitching means, said control means comprising thread guide means upstream of said disc means, and additional severing means for severing said thread intermediate said thread guide means and said disc means.
Claim 22
Dependent Claim
155 words
In an apparatus for connecting stacked superimposed sheet material by thread staples, comprising supply means for supplying a thread; rotary disc means having a periphery for receiving said thread; stitching means for stitching lengths of said thread through said superimposed sheet material; severing means for severing from said thread requisite lengths for conversion by said stitching means into thread staples; and control mEans for interrupting the supply of thread to said severing means at such times as no thread staples are to be formed by said stitching means, said control means comprising at least one thread controlling device; and at least one sensing device positioned for sensing the approach of respective stacks of sheet material to said disc means, said sensing device being operatively associated with said thread controlling device for effecting operation of the same in a sense permitting supply of thread towards said disc means in response to the sensing of such approach.
Claim 23
Dependent Claim
155 words
In an apparatus for connecting stacked superimposed sheet material by thread staples, comprising supply means for supplying a thread; rotary disc means having a periphery for receiving said thread; stitching means for stitching lengths of said thread through said superimposed sheet material; severing means for severing from said thread requisite lengths for conversion by said stitching means into thread staples; and control mEans for interrupting the supply of thread to said severing means at such times as no thread staples are to be formed by said stitching means, said control means comprising at least one thread controlling device; and at least one sensing device positioned for sensing the approach of respective stacks of sheet material to said disc means, said sensing device being operatively associated with said thread controlling device for effecting operation of the same in a sense permitting supply of thread towards said disc means in response to the sensing of such approach.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |