US3733126A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Step-by-step drive useful in microfiche cameras
Assignee: EUGENE DIETZGEN CO US
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Filing: 1971-08-04
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Granted: 1973-05-15
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Expires: 1991-08-04
Abstract
Abstract A microfiche camera embodying a film-indexing mechanism for frame-by-frame and row-by-row exposure of the film in a grid-like fiche pattern, the drive embodying a first carriage mounted for linear movement on a frame, a second carriage mounted for linear cross-motion on the first carriage, and a step-by-step drive for each carriage including a ball screw, a traveler on the screw, a latch member on the traveler and a pivotable catch member bearing a plurality of projecting teeth with spacings between the teeth corresponding to a dimension of the fiche frames.
Inventors
- 👤 P Brownscombe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:43
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/58; G03B27/583; Y; Y10; Y10T; Y10T74/00; Y10T74/15; Y10T74/1503
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
184 words
A camera for reproducing copy or other information on film as a microfiche composed of a plurality of frames in a grid-like arrangement of horizontal rows and vertical columns, which comprises a frame, a first carriage mounted for linear movement on said frame, a second carriage mounted for linear movement on said first carriage in a direction at right angles to the linear movement of said first carriage, film-supporting means mounted on one of said carriages, a film-exposure aperture, and filmindexing drive means for linear movement of respective carriages relative to said aperture to move said film relative to said aperture in frame-by-frame and row-by-row movement, the indexing drive means for at least one of the carriages embodying a constantly energized drive motor driving latch means held positively against each of a plurality of linearly spaced catch members adapted to stop said latch means and the drive thereof at spacings corresponding to the frame arrangement on said fiche, and means to momentarily release said catch members from said latch means to allow the latter to advance into positive engagement with the next catch member.
Claim 2
Dependent Claim
184 words
A camera for reproducing copy or other information on film as a microfiche composed of a plurality of frames in a grid-like arrangement of horizontal rows and vertical columns, which comprises a frame, a first carriage mounted for linear movement on said frame, a second carriage mounted for linear movement on said first carriage in a direction at right angles to the linear movement of said first carriage, film-supporting means mounted on one of said carriages, a film-exposure aperture, and filmindexing drive means for linear movement of respective carriages relative to said aperture to move said film relative to said aperture in frame-by-frame and row-by-row movement, the indexing drive means for at least one of the carriages embodying a constantly energized drive motor driving latch means held positively against each of a plurality of linearly spaced catch members adapted to stop said latch means and the drive thereof at spacings corresponding to the frame arrangement on said fiche, and means to momentarily release said catch members from said latch means to allow the latter to advance into positive engagement with the next catch member.
Claim 3
Dependent Claim
106 words
A camera as claimed in claim 1, said indexing drive means embodying a rotatably driven screw, said latch means embodying a traveler mounted on said screw for linear movement thereon as said screw rotates and a latch member on said traveler, said catch members being teeth disposed at regularly spaced intervals on a common base member in position to engage said latch member, and means for moving momentarily said teeth out of latch-engaging position a distance sufficient to clear the latch member relative to a given tooth and allow said traveler and latch member to advance along said screw until the latter engages the next tooth.
Claim 4
Dependent Claim
28 words
A camera as claimed in claim 2, said means for moving said teeth and base member momentarily being operated by a solenoid operatively connected to said base member.
Claim 5
Dependent Claim
15 words
A camera as claimed in claim 1, said motor being an impedance protected, torque motor.
Claim 6
Dependent Claim
46 words
A camera as claimed in claim 1, and switch actuating means activated by said traveler upon passing the last tooth for operating switch means in a circuit of said motor for reversing its drive rotation to return said traveler back to engagement with the first tooth.
Claim 7
Dependent Claim
42 words
A camera as claimed in claim 1, and means for activating the indexing drive means to move the other carriage one step to ready said film for exposure of another row of frames when a full row of frames has been exposed.
Claim 8
Dependent Claim
94 words
An indexing unit comprising an electric motor, a rotatable screw driven by said motor, a traveller mounted on said screw for linear movement thereon, a latch member on said traveller, a catch member having a plurality of teeth disposed at linearly spaced intervals in position to sequentially engage said latch member, and means for moving momentarily said teeth out of latch-engaging position a distance sufficient to clear the latch member relative to a given tooth and allow said traveller and latch member to advance along said screw until the latter engages the next tooth.
Claim 9
Dependent Claim
94 words
An indexing unit comprising an electric motor, a rotatable screw driven by said motor, a traveller mounted on said screw for linear movement thereon, a latch member on said traveller, a catch member having a plurality of teeth disposed at linearly spaced intervals in position to sequentially engage said latch member, and means for moving momentarily said teeth out of latch-engaging position a distance sufficient to clear the latch member relative to a given tooth and allow said traveller and latch member to advance along said screw until the latter engages the next tooth.
Claim 10
Dependent Claim
32 words
An indexing unit as claimed in claim 7, said motor being a constantly Energized, torque motor whereby said latch member is held positively against the respective teeth when in latching engagement therewith.
Claim 11
Dependent Claim
51 words
An indexing unit as claimed in claim 7, said catch member embodying an elongated strip with said teeth projecting there from a longitudinal edge thereof, and means for rotating said catch member about its longitudinal axis, an amount sufficient to attain the momentary clearance of said teeth by said latch member.
Claim 12
Dependent Claim
24 words
An indexing unit as claimed in claim 9, a solenoid, and means operatively connecting said solenoid and said catch member to rotate the latter.
References Cited (Backward Citations)
US3299776A
Cited
US3449049A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-14 | 1976-11-13 | 1977-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-14 | 1980-11-13 | 1981-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-14 | 1984-11-13 | 1985-05-15 | $7700.00 | Window Closed / Lapsed |