Patent US3599521A successfully refreshed from Google Patents.
US3599521A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic film cutter
Assignee: Alves Photo Service Inc
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Filing: 1969-06-25
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Granted: 1971-08-17
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Expires: 1989-06-25
Abstract
Abstract An apparatus for automatically and accurately cutting frames from a film strip, which apparatus uses a control system which advances the film strip to a cutter, at a high speed, changes the film strip advancement to a lower speed after the strip reaches a first predetermined position relative to the cutter, and brakes the film strip when it reaches a second predetermined position, at which latter position the cut is made. This operation is performed cyclically as the film advances so that a plurality of accurately cut frames results. Means are further provided for supplying the film strip material without longitudinal tension to avoid damage thereto.
Inventors
- 👤 Richard G Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:57
CPC Classifications
G; G03; G03D; G03D15/00; G03D15/04; Y; Y10; Y10T; Y10T83/00; Y10T83/444; Y10T83/4458; Y10T83/446; Y10T83/4529; Y10T83/4564; Y10T83/4567; Y10T83/525; Y10T83/527; Y10T83/528; Y10T83/531
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
166 words
A machine for cutting strip material comprising cutting means; means for supplying a continuous strip of said material for movement along a predetermined path of travel toward said cutting means; first means for moving said strip material at a first speed along said path of travel; second means for moving said strip material at a second speed along said path of travel, said second speed being slower than said first speed; braking means for stopping the movement of said strip material; control means for successively actuating said first moving means said second moving means, and said braking means in a cyclic fashion, whereby said strip material is successively and cyclically caused to move along said path at said first speed, to change its speed of travel to said second speed when selected portions of said strip material reach a first predetermined position along said path of travel; and means for actuating said cutting means to cut said strip material each time said strip material is stopped.
Claim 2
Dependent Claim
166 words
A machine for cutting strip material comprising cutting means; means for supplying a continuous strip of said material for movement along a predetermined path of travel toward said cutting means; first means for moving said strip material at a first speed along said path of travel; second means for moving said strip material at a second speed along said path of travel, said second speed being slower than said first speed; braking means for stopping the movement of said strip material; control means for successively actuating said first moving means said second moving means, and said braking means in a cyclic fashion, whereby said strip material is successively and cyclically caused to move along said path at said first speed, to change its speed of travel to said second speed when selected portions of said strip material reach a first predetermined position along said path of travel; and means for actuating said cutting means to cut said strip material each time said strip material is stopped.
Claim 3
Dependent Claim
25 words
A machine for cutting strip material in accordance with claim 1 wherein said supplying means includes means for supplying said strip material without longitudinal tension.
Claim 4
Dependent Claim
95 words
A machine for cutting strip material in accordance with claim 1 wherein said control means includes first sensing means responsive to a change in the characteristics of said strip material for producing a first control signal; means responsive to said first control signal for disabling said first moving means and for actuating said second moving means; second sensing means responsive to said change in the characteristics of said strip material for producing a second control signal; means responsive to said second control signal for disabling said second moving means and for actuating said braking means.
Claim 5
Dependent Claim
37 words
A machine for cutting strip material in accordance with claim 3 and further including means for delaying the actuation of said second moving means for a preselected time period after the disabling of said first moving means.
Claim 6
Dependent Claim
32 words
A machine for cutting strip material in accordance with claim 3 and further comprising means responsive to said second control signal for actuating said cutting means when said strip material is stopped.
Claim 7
Dependent Claim
75 words
A machine for cutting strip material in accordance with claim 3 wherein said first and said second sensing means each includes a light source for directing energy toward a portion of said strip material from one side thereof; photoelectric means responsive to a change in the energy transmission characteristics of said portion of said strip material to produce an electrical signal; and circuit means for producing a control signal in response to said electrical signal.
Claim 8
Dependent Claim
18 words
A machine for cutting strip material in accordance with claim 6, wherein said energy is visible light energy.
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) | 1974-08-16 | 1975-02-15 | 1975-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-16 | 1979-02-15 | 1979-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-16 | 1983-02-15 | 1983-08-17 | $7700.00 | Window Closed / Lapsed |