US3653570A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stitching machine
Assignee: 2019 S&H Ltd
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Filing: 1970-05-15
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Granted: 1972-04-04
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Expires: 1990-05-15
Abstract
Abstract An axial feed rotary staple stitching machine has a rotating stitching cylinder with stitching heads, each of which includes means for shaping and holding a blank from which a staple is formed, and means for applying the staple against a clinching block, all of which means rotate with the stitching cylinder. The blank is fed tangentially to the stitching cylinder but with its axis parallel to that of the stitching cylinder, by pushers on a delivery cylinder. The machine can exercise a collection function if one or more of the pushers are prevented from acting, without change in the number of stapling heads or collecting stations.
Inventors
- 👤 Arthur Graham Alsop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:56
CPC Classifications
B; B27; B27F; B27F7/00; B27F7/17; B27F7/19; B27F7/21; B27F7/23
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
224 words
A rotary staple stitching machine for shaping staples from staple forming wire blanks and applying the same to material to be stitched and having a rotatable stitching cylinder with at least one stitching head thereon on which the blank is shaped into a staple, said stitching head having an inside staple former and an outside staple former having a radially stepped radially outer surface, means for feeding the blanks with their lengths disposed parallel to the axis of rotation of the cylinder to be engaged and carried away by the said stepped surface of the outside staple former, means for positioning the inside staple former radially outwardly of the blank to entrap a central part of that blank against radially outward movement during the shaping of the staple and for withdrawing the inside staple former to allow the staple to move radially outwardly into the material to be stitched, means for relatively moving the inside staple former and the outside staple former in the radial direction to form the staple by bending the ends of the blank to form radially outwardly directed staple legs and means for withdrawing the outside staple former in the radially inward direction as the staple enters the material to be stitched whereby the staple legs are supported by the outside staple former as they begin to enter the material.
Claim 2
Dependent Claim
224 words
A rotary staple stitching machine for shaping staples from staple forming wire blanks and applying the same to material to be stitched and having a rotatable stitching cylinder with at least one stitching head thereon on which the blank is shaped into a staple, said stitching head having an inside staple former and an outside staple former having a radially stepped radially outer surface, means for feeding the blanks with their lengths disposed parallel to the axis of rotation of the cylinder to be engaged and carried away by the said stepped surface of the outside staple former, means for positioning the inside staple former radially outwardly of the blank to entrap a central part of that blank against radially outward movement during the shaping of the staple and for withdrawing the inside staple former to allow the staple to move radially outwardly into the material to be stitched, means for relatively moving the inside staple former and the outside staple former in the radial direction to form the staple by bending the ends of the blank to form radially outwardly directed staple legs and means for withdrawing the outside staple former in the radially inward direction as the staple enters the material to be stitched whereby the staple legs are supported by the outside staple former as they begin to enter the material.
Claim 3
Dependent Claim
68 words
Apparatus according to claim 1 wherein the stitching head includes a radially movable staple driver and means to move the driver to trap said central part of the blank between it and the inside staple former during the shaping of the staple, said blank being radially clear of the inside staple former and of the staple driver at the time it is engaged by the outside staple former.
Claim 4
Dependent Claim
80 words
Apparatus according to claim 1, including blank delivery means adjacent said stitching cylinder having a stationary guideway for the blank and pusher means thereon for pushing in front of it a blank for a stitch along the guideway to the stitching cylinder with a motion tangential to the stitching cylinder to be engaged and carried away by a said stitching head thereon at a speed not greater than that of the stitching head at the periphery of the stitching cylinder.
Claim 5
Dependent Claim
52 words
Apparatus according to claim 2 in combination with a folding cylinder bearing at least one clinching block thereon in register with the stitching head, wherein means are provided to move the staple driver radially outwardly of the stitching cylinder to move the staple radially outward and press it into the clinching block.
Claim 6
Dependent Claim
26 words
Apparatus according to claim 4 wherein the inside staple former is retractable tangentially from the stitch to free the stitch for said movement with the driver.
Claim 7
Dependent Claim
54 words
Apparatus according to claim 3, wherein said blank delivery means adjacent said stitching cylinder is a rotating delivery cylinder having said pusher means mounted thereon, and means to correlate the relative speeds of rotation of said cylinders so that a pusher means registers generally with each stitching head during revolution of the stitching cylinder.
Claim 8
Dependent Claim
89 words
Apparatus according to claim 6, in combination with a carrier roll adjacently operating with said stitching cylinder and carrying the signatures to be stitched, said carrier roll having thereon the same number of clinching blocks for cooperation with the stitching heads as there are stitching heads on the stitching cylinder and wherein there is one less pusher means than stitching heads, and one of the pusher means can be rendered inoperative, whereby the carrier roll can be used to exercise a collect function and acts as a collection roll.
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) | 1975-04-04 | 1975-10-04 | 1976-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-04 | 1979-10-04 | 1980-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-04 | 1983-10-04 | 1984-04-04 | $7700.00 | Window Closed / Lapsed |