US3748032A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microform viewer indexing means
Assignee: NCR Voyix Corp
•
Filing: 1971-03-23
•
Granted: 1973-07-24
•
Expires: 1991-03-23
Abstract
Abstract Means for indication of column and row positions of microform images in a viewer or reader to assure a rapid accessibility to microform data. In a microform system having a form carrier for placing the data images in position for projection, the carrier being linked to indexing means so that the image being viewed by the user can be identified as to its column and row designation. An indexing roller device containing the column and row designations is rotated by movement of the microform carrier in a fore or aft direction for indication of the row, and movement of the carrier in a left or right direction provides indication of the column in a conveniently placed window.
Inventors
- 👤 T Kyle
- 👤 W Schutrum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:44
CPC Classifications
G; G06; G06K; G06K17/00; G06K17/0016; G03; G03B; G03B21/00; G03B21/10; G03B21/11; G03B21/115; G03B21/116
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
In a microform reader having a microform image carrier movable in fore-and-aft and side-to-side directions, a projection lens assembly, a screen for displaying an enlargement of a selected image of the microform, and indexing means for indicating the image being projected and displayed on the screen, said indexing means comprising drive means including a timing belt and cooperating pulleys positioned adjacent said image carrier, said belt being securely connected via a link to the microform carrier and movable in response to fore-and-aft travel thereof, and cylindrical roller means connected to the timing belt and rotatable thereby, the roller means having column and row designations thereon representing and corresponding to the images on the microform, said drive means including a hub driven by said timing belt, and the roller means and the hub including a tooth-and-slot connection for maintaining timed relationship therebetween for insuring indication on the roller means of the selected image being projected onto the screen.
Claim 2
Dependent Claim
157 words
In a microform reader having a microform image carrier movable in fore-and-aft and side-to-side directions, a projection lens assembly, a screen for displaying an enlargement of a selected image of the microform, and indexing means for indicating the image being projected and displayed on the screen, said indexing means comprising drive means including a timing belt and cooperating pulleys positioned adjacent said image carrier, said belt being securely connected via a link to the microform carrier and movable in response to fore-and-aft travel thereof, and cylindrical roller means connected to the timing belt and rotatable thereby, the roller means having column and row designations thereon representing and corresponding to the images on the microform, said drive means including a hub driven by said timing belt, and the roller means and the hub including a tooth-and-slot connection for maintaining timed relationship therebetween for insuring indication on the roller means of the selected image being projected onto the screen.
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) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |