US3768133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for stripping film from a film cartridge
Assignee: Eastman Kodak Co
•
Filing: 1971-11-12
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Granted: 1973-10-30
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Expires: 1991-11-12
Abstract
Abstract A method and apparatus for stripping exposed film from a film cartridge and feeding the stripped film into a processor or onto a take-up reel. The stripping apparatus comprises a plurality of work stations spaced along the periphery of a circular work table for supporting one or more film cartridges. The cartridges are of the type having a spool of film, an anti-backup ratchet to prevent rotation of the spool in a direction to permit stripping the film from the cartridge, and an exposure aperture against which the film is pressed by a pressure plate. The work table is indexed in steps for transporting each film cartridge successively through the work stations. At the first station, a code on the film cartridge such as a notch is sensed by any suitable sensing mechanism. If the correct code is sensed indicating a predetermined type of film, a film advancing mechanism and a pawl and ratchet disabling mechanism at the first station are operated. After the ratchet is disabled, the enabled film advancing mechanism engages the film in the cartridge and advances the film adjacent the leading end through the cartridge aperture forming a film loop extending out of the cartridge. Upon signal by the operator or operator controlled mechanical element of the system, the work table is indexed advancing the cartridge to the second station where the film cartridge pressure plate and antibackup ratchet are both disabled. The operator preferably manually grasps the film loop and splices it to the trailing end of the previous film strip, and a film feeder in engagement therewith strips the film from the cartridge and into a slack box. After the film has been stripped from the cartridge, the operator preferably severs the film from the cartridge, and actuates an indexing mechanism for indexing the work table one station. When the work table and cartridge reach the ejecting station, the empty cartridge is automatically ejected.
Inventors
- 👤 V Scappator
- 👤 A Yetter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:06
CPC Classifications
G; G03; G03D; G03D13/00; G03D13/001; Y; Y10; Y10T; Y10T225/00; Y10T225/20; Y10T225/22; Y10T225/30; Y10T29/00; Y10T29/49; Y10T29/49762; Y10T29/49764; Y10T29/49778; Y10T29/4978; Y10T29/53; Y10T29/53039; Y10T29/53048; Y10T29/53465; Y10T408/00; Y10T408/55; Y10T408/561
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
123 words
In a mechanism to facilitate stripping film from a film cartridge of the type having a film pressure plate and an antibackup ratchet, the combination comprising: means for intermittently transporting a film cartridge in sequence through first, second and third work stations; means at said first work station for temporarily disabling the antibackup ratchet and for advancing film in the form of a film loop from the cartridge; means at said second work station spaced from said first work station for again temporarily disabling the antibackup ratchet in the cartridge to allow the film loop to be pulled and the film stripped from the cartridge; and means at said third work station spaced from said second work station for ejecting the stripped cartridge.
Claim 2
Dependent Claim
123 words
In a mechanism to facilitate stripping film from a film cartridge of the type having a film pressure plate and an antibackup ratchet, the combination comprising: means for intermittently transporting a film cartridge in sequence through first, second and third work stations; means at said first work station for temporarily disabling the antibackup ratchet and for advancing film in the form of a film loop from the cartridge; means at said second work station spaced from said first work station for again temporarily disabling the antibackup ratchet in the cartridge to allow the film loop to be pulled and the film stripped from the cartridge; and means at said third work station spaced from said second work station for ejecting the stripped cartridge.
Claim 3
Dependent Claim
22 words
The invention according to claim 1 wherein said film advancing means comprises a friction roller movable into driving engagement with the film.
Claim 4
Dependent Claim
38 words
The invention according to claim 1 wherein said film advancing means comprises a friction roller movable into driving engagement with the film, a gear secured to said roller, and a reciprocally movable gear rack for driving said gear.
Claim 5
Dependent Claim
48 words
The invention according to claim 1, and further comprising a film pressure plate disabling means for disabling the pressure plate when the cartridge is at said second station, and said ratchet disabling means comprises a power driven stake for piercing the cartridge and engaging and disabling the ratchet.
Claim 6
Dependent Claim
15 words
The invention according to claim 1 wherein said ejecting means comprises a power operated pusher.
Claim 7
Dependent Claim
44 words
The invention according to claim 1 wherein said transporting means comprises a rotatable table for supporting one or more cartridges in spaced relation, and means for indexing said table to intermittently advance the cartridge in sequence through said first, second and third work stations.
Claim 8
Dependent Claim
35 words
The invention according to claim 1 and further including sensing means at said first station for sensing a predetermined cartridge, and in response thereto to enable said film advancing means and said ratchet disabling means.
Claim 9
Dependent Claim
200 words
In a mechanism to facilitate stripping film from a film cartridge of the type having a film pressure plate at the cartridge exposure aperture for pressing the film against the aperture, and an antibackup one-way ratchet for preventing reverse rotation of the film, the combination comprising: a rotatable work table having a plurality of angularly spaced receptacles for receiving film cartridges; means for indexing said work table to intermittently advance each film cartridge in sequence through first, second and third work stations arranged around The periphery of said work table; means including a friction roller at said first work station for engaging and advancing film in the form of a film loop from a cartridge; means including a power driven stake at said first and second work stations for piercing a cartridge and engaging and temporarily disabling the antibackup ratchet; means including a pressure roller at said second work station for engaging and disabling the film pressure plate in the cartridge to facilitate stripping the film from the cartridge when the film loop is grasped and pulled; and means including a power driven pusher at said third work station spaced from said second work station for ejecting the stripped cartridge.
Claim 10
Dependent Claim
200 words
In a mechanism to facilitate stripping film from a film cartridge of the type having a film pressure plate at the cartridge exposure aperture for pressing the film against the aperture, and an antibackup one-way ratchet for preventing reverse rotation of the film, the combination comprising: a rotatable work table having a plurality of angularly spaced receptacles for receiving film cartridges; means for indexing said work table to intermittently advance each film cartridge in sequence through first, second and third work stations arranged around The periphery of said work table; means including a friction roller at said first work station for engaging and advancing film in the form of a film loop from a cartridge; means including a power driven stake at said first and second work stations for piercing a cartridge and engaging and temporarily disabling the antibackup ratchet; means including a pressure roller at said second work station for engaging and disabling the film pressure plate in the cartridge to facilitate stripping the film from the cartridge when the film loop is grasped and pulled; and means including a power driven pusher at said third work station spaced from said second work station for ejecting the stripped cartridge.
Claim 11
Dependent Claim
30 words
The invention according to claim 8 and further including sensing means at said first station for sensing a predetermined cartridge, and in response thereto to actuate said film advancing means.
Claim 12
Dependent Claim
96 words
The invention according to claim 8 and further including sensing means at said first station movable from a retracted position to an advanced position for sensing a predetermined cartridge, first power means for said sensing means actuatable by the positioning of a cartridge at the first station for moving said sensing means to its advanced position and said friction roller into engagement with the film, and second power means for said film advancing means responsive to said sensing means when it senses a predetermined cartridge for driving said friction roller to advance film from the cartridge.
Claim 13
Independent Claim
106 words
A method for stripping film from a film cartridge of the type having a film pressure plate at the cartridge exposure aperture for pressing the film against the aperture, and an antibackup ratchet for preventing reverse rotation of the film, comprising the steps of: temporarily disabling the antibackup ratchet by piercing the cartridge with a stake; engaging the film adjacent the lead end of the film in the cartridge and advancing the film through the cartridge aperture in the form of a film loop; and securing the film loop to a take-up means for stripping the film from the cartridge upon operation of the take-up means.
Claim 14
Independent Claim
106 words
A method for stripping film from a film cartridge of the type having a film pressure plate at the cartridge exposure aperture for pressing the film against the aperture, and an antibackup ratchet for preventing reverse rotation of the film, comprising the steps of: temporarily disabling the antibackup ratchet by piercing the cartridge with a stake; engaging the film adjacent the lead end of the film in the cartridge and advancing the film through the cartridge aperture in the form of a film loop; and securing the film loop to a take-up means for stripping the film from the cartridge upon operation of the take-up means.
Claim 15
Dependent Claim
31 words
The method according to claim 11, and further including the step of sensing each film cartridge and enabling the remaining steps only if the cartridge contains film of a predetermined type.
Claim 16
Dependent Claim
23 words
The method according to claim 11, and further comprising the step of disabling the cartridge pressure plate by depressing it with a roller.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |