Patent US3512552A successfully refreshed from Google Patents.
US3556166A
Expired / Lapsed
US
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Wire-bending apparatus
Assignee: Comstock and Wescott Inc
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Filing: 1968-10-31
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Granted: 1971-01-19
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Expires: 1988-10-31
Abstract
Abstract For forming binders for looseleaf books with wire bent back and forth in a series of loops in a zigzag formation, apparatus comprising means for feeding the formation lengthwise along a predetermined path, first means disposed along said path for bending the free end of each loop transversely of its plane, and second means for then bending the tips of the loops on each side of the zigzag formation inwardly toward the tips on the other side of the formation.
Inventors
- 👤 William E Whitney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:52
CPC Classifications
B; B21; B21F; B21F1/00; B21F1/04
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
192 words
For bending wire back and forth in zigzag formation and feeding the formation in a direction extending lengthwise of the formation, apparatus comprising two rows of pins movable along a predetermined path a portion of which extends along one side of said formation in said direction from a first location to a second location farther along the portion, said rows being parallel to said portion, the pins of the two rows being staggered, the axes of the pins in said portion being substantially perpendicular to said path, and the pins having free ends adjacent said path, projection means at said first location for projecting said free ends from said one side to the other side of the path, looping means at said first location for winding wire back and forth over successive pins of the two rows in a succession of loops to form said formation, retraction means at said second location for withdrawing said free ends from the loops so that the formation may proceed freely in said direction, and means intermediate said locations for pinching the two sides of each loop toward each other adjacent each end of the loop.
Claim 2
Dependent Claim
192 words
For bending wire back and forth in zigzag formation and feeding the formation in a direction extending lengthwise of the formation, apparatus comprising two rows of pins movable along a predetermined path a portion of which extends along one side of said formation in said direction from a first location to a second location farther along the portion, said rows being parallel to said portion, the pins of the two rows being staggered, the axes of the pins in said portion being substantially perpendicular to said path, and the pins having free ends adjacent said path, projection means at said first location for projecting said free ends from said one side to the other side of the path, looping means at said first location for winding wire back and forth over successive pins of the two rows in a succession of loops to form said formation, retraction means at said second location for withdrawing said free ends from the loops so that the formation may proceed freely in said direction, and means intermediate said locations for pinching the two sides of each loop toward each other adjacent each end of the loop.
Claim 3
Dependent Claim
53 words
Apparatus according to claim 1 wherein said looping means comprises an oscillator movable parallel to said path to and fro between said rows, said oscillator has a pivotal axis extending transversely of said path between said rows and a wire guide offset from the pivotal axis in the direction opposite to said direction.
Claim 4
Dependent Claim
13 words
Apparatus according to claim 1 wherein the pins are carried by a belt.
Claim 5
Dependent Claim
20 words
Apparatus according to claim 1 wherein said looping means comprises a pair of juxtaposed rollers continuously holding the wire therebetween.
Claim 6
Dependent Claim
26 words
Apparatus according to claim 1 wherein said path is disposed in a plane so that the formation is not bent as it travels along said path.
Claim 7
Dependent Claim
13 words
Apparatus according to claim 1 wherein the sides of said loops are parallel.
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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |