US3659398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film feed and cutter for fold-over wrapping machine
Assignee: Battle Creek Packaging Machines Inc
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Filing: 1970-11-02
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Granted: 1972-05-02
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Expires: 1990-11-02
Abstract
Abstract A wrapping machine has an article feeding conveyor delivering to a wrapping conveyor driven at the same speed and having a foldover bar arranged to fold the trailing end of a wrapper sheet forwardly over the article as the article continues to advance. A film feed conveyor delivers the leading end of a wrapper film to the inlet end of the wrapper conveyor to be trapped under and advanced with the article. A rotary cutter bar located at the inlet end of the film feeding conveyor cuts an individual wrapper from the film as the leading end of the wrapper is trapped by the article. Drive connections to the film feed wrapper and the cutter bar and continuously operating film feed rollers operate the film feed and cutter at a slow speed approximating the lineal speed of the wrapping conveyor while the cutter is operating and then speed up the film feed to a fast speed to advance a sufficient length of the film to provide a complete wrapper before the next actuation of the cutter bar. The drive to the cutter bar operates the bar at a peripheral speed that is slightly greater than the slow lineal speed of the film feed to prevent the film from piling up behind the cutter.
Inventors
- 👤 Ronald Holt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:11
CPC Classifications
B; B65; B65B; B65B41/00; B65B41/12; Y; Y10; Y10T; Y10T83/00; Y10T83/465; Y10T83/474; Y10T83/4743; Y10T83/4766; Y10T83/4775
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
162 words
In combination with a wrapping machine having an article feeding conveyor delivering to a wrapping conveyor, web feeding rolls delivering to a rotary cutter and web advancing means delivering past said cutter to said wrapping conveyor, synchronizing drive connections comprising: a main drive connected to drive said conveyors at about the same peripheral speed and having a cycle corresponding to the wrapping cycle of the wrapping conveyor, a second drive driven from said first drive and connected to drive said cutter at one revolution per cycle of the main drive, a third drive driven from said first drive and connected to drive said feed rolls and said web advancing means, said third drive including alternately operable gear trains providing high and low speed drives, electrically actuated means arranged to engage said high speed drive, and a switch driven cyclically with said main drive and arranged to actuate said electrically actuated means during a fractional part of the cycle of said main drive.
Claim 2
Dependent Claim
162 words
In combination with a wrapping machine having an article feeding conveyor delivering to a wrapping conveyor, web feeding rolls delivering to a rotary cutter and web advancing means delivering past said cutter to said wrapping conveyor, synchronizing drive connections comprising: a main drive connected to drive said conveyors at about the same peripheral speed and having a cycle corresponding to the wrapping cycle of the wrapping conveyor, a second drive driven from said first drive and connected to drive said cutter at one revolution per cycle of the main drive, a third drive driven from said first drive and connected to drive said feed rolls and said web advancing means, said third drive including alternately operable gear trains providing high and low speed drives, electrically actuated means arranged to engage said high speed drive, and a switch driven cyclically with said main drive and arranged to actuate said electrically actuated means during a fractional part of the cycle of said main drive.
Claim 3
Dependent Claim
36 words
The combination as defined in claim 1 in which said second drive is arranged to drive the cutter so that the peripheral speed of the cutter is slightly greater than the lineal speed of said conveyors.
Claim 4
Dependent Claim
29 words
The combination as defined in claim 2 in which said second drive includes mating eccentric gears arranged to accelerate the speed of said cutter at its time of cutting.
Claim 5
Dependent Claim
38 words
The combination as defined in claim 2 in which the slow speed drive to said feed rolls drives the rolls at about the same peripheral speed as the peripheral speed of said cutter at the time of cutting.
Claim 6
Dependent Claim
35 words
The combination as defined in claim 1 in which said switch is adjustable to vary the fraction of the wrapping cycle during which said electrically actuated means is operative to engage said high speed drive.
Claim 7
Dependent Claim
26 words
The combination as defined in claim 5 in which said switch is further adjustable to close at different points in the cycle of the wrapping conveyor.
Claim 8
Dependent Claim
46 words
The combination as defined in claim 1 in which said feed rolls, said cutter and said web advancing means are adjustably supported and movable toward and away from the inlet end of said wrapping conveyor to vary the distance between the cutter and the wrapping conveyor.
Claim 9
Dependent Claim
46 words
The combination as defined in claim 5 in which said feed rolls, said cutter and said web advancing means are adjustably supported and movable toward and away from the inlet end of said wrapping conveyor to vary the distance between the cutter and the wrapping conveyor.
Claim 10
Dependent Claim
52 words
The combination as defined in claim 1 in which said web advancing means comprises wrapper feed belts of the same general length as the length of the wrapper, and wrapper retaining belts positioned over said wrapper feed belts and having lower reaches advanced in slightly spaced relation to the wrapper feed belts.
Claim 11
Dependent Claim
32 words
The combination as defined in claim 9 in which said retaining belts are connected to be driven from said third drive means at a slightly greater speed than said web feed belts.
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) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |