US3697679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic threading video recorder
Assignee: Ampex Corp
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Filing: 1970-07-01
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Granted: 1972-10-10
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Expires: 1990-07-01
Abstract
Abstract A video tape is automatically threaded from a supply means such as a tape cartridge or cassette about a video scanner and past appropriate sound, control track and erase heads to a take up means. Preferably, a stripping means is effective to strip a leader from a tape cartridge having coiled video tape therein and feed the leader to the take up means. The video tape attached to the leader is preferably threaded at operational speed and with operational tension by a tape capstan and pressure roller means which is automatically disabled when the video tape is threaded.
Inventors
- 👤 Richard Allen Hathaway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:55
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/78; H04N5/782
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
379 words
In a video tape recorder, an apparatus for automatically threading a tape from a supply cartridge having a roll of video tape which has a leader affixed to the leading end of the tape, said apparatus comprising support means for supporting said supply cartridge, a take-up means spaced from said support means and having means for winding said video tape thereon, a video scanner assembly including a rotatable scanning disk having an outer circular peripheral surface spaced from said support means and mounted for operative association with said video tape transported from said cartridge, sound recording and reproducing transducer means for operative cooperation with said video tape at positions along said path of tape transport intermediate said support means and take-up means; means for initiating movement of said video tape leader forwardly from said cartridge and along the path of tape movement; feed means downstream from said supply cartridge support means having a leader feed nip for feeding said leader forwardly and about said rotatable disk of said video scanner assembly and past said sound recording and reproducing means; first guide means intermediate said supply cartridge and said rotatable circular scanning disk for guiding said leader to adjacent said outer circular peripheral surface of said scanning disk, arcuate guide means extending about a substantial peripheral portion of said circular disk to guide said leader in an arcuate path of substantial length about said circular scanning disk, said first guide means directing said leader in a first direction and said arcuate guide means directing said leader to depart from said first direction through a substantial angular change of direction, means guiding said video tape for an arcuate wrap of substantial length about said rotatable circular scanning disk, exit guide means for guiding said tape leader exiting from said scanning disk past said sound recording and reproducing means to said take-up reel means, video tape drive means for driving said video tape at operational speed and with a predetermined tension in said video tape to establish the tension in said video tape for a subsequent video recording or reproducing operation, and means for disabling said leader feed nip of said feed means as said video tape is being driven by said tape drive means and being wound on said take-up means.
Claim 2
Dependent Claim
379 words
In a video tape recorder, an apparatus for automatically threading a tape from a supply cartridge having a roll of video tape which has a leader affixed to the leading end of the tape, said apparatus comprising support means for supporting said supply cartridge, a take-up means spaced from said support means and having means for winding said video tape thereon, a video scanner assembly including a rotatable scanning disk having an outer circular peripheral surface spaced from said support means and mounted for operative association with said video tape transported from said cartridge, sound recording and reproducing transducer means for operative cooperation with said video tape at positions along said path of tape transport intermediate said support means and take-up means; means for initiating movement of said video tape leader forwardly from said cartridge and along the path of tape movement; feed means downstream from said supply cartridge support means having a leader feed nip for feeding said leader forwardly and about said rotatable disk of said video scanner assembly and past said sound recording and reproducing means; first guide means intermediate said supply cartridge and said rotatable circular scanning disk for guiding said leader to adjacent said outer circular peripheral surface of said scanning disk, arcuate guide means extending about a substantial peripheral portion of said circular disk to guide said leader in an arcuate path of substantial length about said circular scanning disk, said first guide means directing said leader in a first direction and said arcuate guide means directing said leader to depart from said first direction through a substantial angular change of direction, means guiding said video tape for an arcuate wrap of substantial length about said rotatable circular scanning disk, exit guide means for guiding said tape leader exiting from said scanning disk past said sound recording and reproducing means to said take-up reel means, video tape drive means for driving said video tape at operational speed and with a predetermined tension in said video tape to establish the tension in said video tape for a subsequent video recording or reproducing operation, and means for disabling said leader feed nip of said feed means as said video tape is being driven by said tape drive means and being wound on said take-up means.
Claim 3
Dependent Claim
49 words
A video recorder in accordance with claim 1 in which said feed means includes a push roller which is driven and a guide roller; said push roller and guide roller being disposed on opposite sides of said leader and movable from and to gripping relationship with said video tape.
Claim 4
Dependent Claim
67 words
A video recorder iN accordance with claim 1 in which said feed means comprises a push roller and a guide roller, said push roller and guide roller being disposed on opposite sides of said leader, in which said cartridge support means includes a turntable and in which a means is engageable with said turntable and said push roller to turn said turntable with driving of said tape.
Claim 5
Dependent Claim
50 words
A video recorder in accordance with claim 1 in which said video tape has an oxide surface coating and in which guide means are provided on the exit side of said scanner assembly to wrap said tape with said oxide coating facing inwardly when coiled on said take up means.
Claim 6
Dependent Claim
51 words
A video recorder in accordance with claim 1 in which said video tape has an oxide surface coating and in which guide means are provided on the exit side of said scanner assembly to wrap said video tape with said oxide coating facing outwardly when coiled on said take up means.
Claim 7
Dependent Claim
37 words
A video tape recorder in accordance with claim 1 in which said means for disabling said feed means includes sensing means for sensing the position of said tape at a predetermined position along said path of travel.
Claim 8
Dependent Claim
32 words
A video recorder in accordance with claim 6 in which said sensing means includes a photosensitive system for detecting a change in light characteristics with movement of said tape and leader therepast.
Claim 9
Dependent Claim
37 words
A video tape recorder in accordance with claim 6 in which said sensing means senses said leader and said tape and disables said video tape drive means and said take-up means after a predetermined period of time.
Claim 10
Dependent Claim
304 words
In a video tape recorder for playing back from or recording on a video tape wound in a coil in a supply cartridge and having a leader secured to the leading end of the video tape, the combination comprising support means for supporting said cartridge as said video tape is unwound from said coil, a take-up means for winding said leader and tape into a coil, leader transporting means downstream from said support means for transporting said leader along a predetermined path from said cartridge to said takeup means, a scanner assembly downstream of said support means and having a rotatable scanning disk with a circular, peripheral surface for contacting said video tape, first guide means intermediate said supply cartridge and said rotatable circular scanning disk for guiding said leader to adjacent said outer circular peripheral surface of said scanning disk, arcuate guide means extending about a substantial peripheral portion of said circular disk to guide said leader in an arcuate path of substantial length about said circular scanning disk, said first guide means directing said leader in a first direction and said arcuate guide means directing said leader to depart from said first direction through a substantial angular change of direction, means for guiding said video tape for an arcuate wrap of at least 180* about said rotatable circular scanning disk, exit guide means for guiding said tape leader exiting from said scanning disk past an audio recording and reproducing means to said take-up reel means, means including audio, audio erase, and track heads located downstream of said video scanner for operative association with said video tape, a capstan tape feeding means for feeding the tape operational speeds, and means for guiding said leader to said take-up means and for attachment thereto so that said leader may be wrapped on said take-up means.
Claim 11
Dependent Claim
304 words
In a video tape recorder for playing back from or recording on a video tape wound in a coil in a supply cartridge and having a leader secured to the leading end of the video tape, the combination comprising support means for supporting said cartridge as said video tape is unwound from said coil, a take-up means for winding said leader and tape into a coil, leader transporting means downstream from said support means for transporting said leader along a predetermined path from said cartridge to said takeup means, a scanner assembly downstream of said support means and having a rotatable scanning disk with a circular, peripheral surface for contacting said video tape, first guide means intermediate said supply cartridge and said rotatable circular scanning disk for guiding said leader to adjacent said outer circular peripheral surface of said scanning disk, arcuate guide means extending about a substantial peripheral portion of said circular disk to guide said leader in an arcuate path of substantial length about said circular scanning disk, said first guide means directing said leader in a first direction and said arcuate guide means directing said leader to depart from said first direction through a substantial angular change of direction, means for guiding said video tape for an arcuate wrap of at least 180* about said rotatable circular scanning disk, exit guide means for guiding said tape leader exiting from said scanning disk past an audio recording and reproducing means to said take-up reel means, means including audio, audio erase, and track heads located downstream of said video scanner for operative association with said video tape, a capstan tape feeding means for feeding the tape operational speeds, and means for guiding said leader to said take-up means and for attachment thereto so that said leader may be wrapped on said take-up means.
Claim 12
Dependent Claim
75 words
A video tape recorder in accordance with claim 9 in which said means for transporting said leader includes a feed means for feeding said leader forwardly past said scanner assembly, said audio head, said audio erase head, and said track heads and further includes a video tape drive means for driving said leader to said take-up means and for driving said video tape at operational speed and with a predetermined tension in the video tape.
Claim 13
Dependent Claim
28 words
A video tape recorder in accordance with claim 10 in which means are provided to disable said feed means when said leader reaches saId video tape drive means.
Claim 14
Dependent Claim
61 words
A video tape recorder in accordance with claim 10 in which said cartridge is separate and separable from a take-up reel for said take-up means, said tape being wound about first and second axes which are spaced from each other by a distance which is less than twice the radius of a fully wound coil of tape in said supply cartridge.
Claim 15
Dependent Claim
69 words
A video tape recorder in accordance with claim 12 in which said take up means includes a stationary cover having a portion on a side facing said supply portion cut out to accommodate a portion of said supply cartridge whereby when said tape from said supply cartridge is fully wound in a coil on said take up means a portion of said coil may project into said supply cartridge.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |