← Back to Patent Explorer
US3786456A Expired / Lapsed US ⏱️ 0.0 years remaining

Variable rate incrementing recorder

Assignee: Telex Computer Products Inc
•
Filing: 1972-06-13
•
Granted: 1974-01-15
•
Expires: 1992-06-13
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract This invention describes an improved type of incremental recording magnetic data system in which data can be recorded in response to the arrival of specific data characters, the tape being idle in between the times of such arrivals. The equipment is similar in some respects to the U. S. Pat. No. 3,595,499, granted to Robert L. Crafts, issued July 27, 1971, entitled APPARATUS FOR MOVING TAPE INCREMENTALLY PAST A RECORDING HEAD. This invention covers an improvement over the Crafts patent in that while it still provides the opportunity to record data incrementally, it provides an additional advantage that the rate of playback of the data can be adjusted to any desired rate from zero up to the maximum rate of traverse of the tape.

Inventors

  • 👤 R Crafts

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 23:11
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/20

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 205 words
Apparatus for recording, at selectively spaced positions on a tape, data characters, which arrive at irregular spaced time intervals, and for playing back said data characters at any selected rate up to the maximum speed of the tape, comprising: a. a capstan shaft against which said tape is pressed; b. a continuously rotating flywheel; c. electrically controlled first clutch means responsive to the arrival of each data character for engaging said first clutch and operatively connecting said flywheel and said capstan shaft for a selected time interval and traversing said tape a selected increment of length; d. a write head past which said tape is moved by said capstan, a data character being recorded in each selected incremental length of tape; e. means for rewinding said tape; f. electrically controlled second clutch means responsive to signal from a device using the reproduced data from said tapes for engaging said second clutch means and operatively connecting said flywheel and said capstan shaft through an element common to both of said first and second clutch means and advancing said tape past a read head; and g. means responsive to the reading of the data character on the tape to disengage said second clutch and stop said tape.
Claim 2
Dependent Claim 205 words
Apparatus for recording, at selectively spaced positions on a tape, data characters, which arrive at irregular spaced time intervals, and for playing back said data characters at any selected rate up to the maximum speed of the tape, comprising: a. a capstan shaft against which said tape is pressed; b. a continuously rotating flywheel; c. electrically controlled first clutch means responsive to the arrival of each data character for engaging said first clutch and operatively connecting said flywheel and said capstan shaft for a selected time interval and traversing said tape a selected increment of length; d. a write head past which said tape is moved by said capstan, a data character being recorded in each selected incremental length of tape; e. means for rewinding said tape; f. electrically controlled second clutch means responsive to signal from a device using the reproduced data from said tapes for engaging said second clutch means and operatively connecting said flywheel and said capstan shaft through an element common to both of said first and second clutch means and advancing said tape past a read head; and g. means responsive to the reading of the data character on the tape to disengage said second clutch and stop said tape.
Claim 3
Dependent Claim 228 words
Apparatus for recording, at selectively spaced positions on a tape, data characters, which arrive at irregular spaced time intervals, and for playing back said data characters at any selected rate up to the maximum speed of the tape, comprising: a. a capstan shaft against which said tape is pressed; b. a continuously rotating flywheel; c. electrically controlled first clutch means responsive to the arrival of each data character for engaging said first clutch and operatively connecting said flywheel and said capstan shaft for a selected time interval and traversing said tape a selected increment of length; d. a write head past which said tape is moved bY said capstan, a data character being recorded in each selected incremental length of tape; e. means for rewinding said tape; f. electrically controlled second clutch means responsive to signal from a device using the reproduced data from said tapes for engaging said second clutch means and operatively connecting said flywheel and said capstan shaft and advancing said tape past a read head; g. means responsive to the reading of the data character on the tape to disengage said second clutch and stop said tape; h. helical spring means for driving said capstan from said flywheel; i. ratchet means for engaging and disengaging said spring means to and from said flywheel; and j. electromagnetically operated plunger means to control said ratchet means.
Claim 4
Dependent Claim 228 words
Apparatus for recording, at selectively spaced positions on a tape, data characters, which arrive at irregular spaced time intervals, and for playing back said data characters at any selected rate up to the maximum speed of the tape, comprising: a. a capstan shaft against which said tape is pressed; b. a continuously rotating flywheel; c. electrically controlled first clutch means responsive to the arrival of each data character for engaging said first clutch and operatively connecting said flywheel and said capstan shaft for a selected time interval and traversing said tape a selected increment of length; d. a write head past which said tape is moved bY said capstan, a data character being recorded in each selected incremental length of tape; e. means for rewinding said tape; f. electrically controlled second clutch means responsive to signal from a device using the reproduced data from said tapes for engaging said second clutch means and operatively connecting said flywheel and said capstan shaft and advancing said tape past a read head; g. means responsive to the reading of the data character on the tape to disengage said second clutch and stop said tape; h. helical spring means for driving said capstan from said flywheel; i. ratchet means for engaging and disengaging said spring means to and from said flywheel; and j. electromagnetically operated plunger means to control said ratchet means.
Claim 5
Dependent Claim 30 words
The apparatus as in claim 2 in which said ratchet means provides means to engage said spring means to said flywheel for successive intervals of time of a preselected duration.
Claim 6
Dependent Claim 243 words
Apparatus for recirding, at selectively spaced positions on a tape, data characters, which arrive at irregular spaced time intervals, and for playing back said data characters at any selected rate up to the maximum speed of the tape, comprising: a. a capstan shaft against which said tape is pressed; b. a continuously rotating flywheel; c. electrically controlled first clutch means responsive to the arrival of each data character for engaging said first clutch and operatively connecting said flywheel and said capstan shaft for a selected time interval and traversing said tape a selected increment of length; d. a write head past which said tape is moved by said capstan, a data character being recorded in each selected incremental length of tape; e. means for rewinding said tape; f. electrically controlled second clutch means responsive to signal from a device using the reproduced data from said tapes for engaging said second clutch means and operatively connecting said flywheel and said capstan shaft and advancing said tape past a read head; g. means responsive to the reading of the data character on the tape to disengage said second clutch and stop said tape; h. helical spring means for driving said capstan from said flywheel; i. friction rim means for engaging and disengaging said spring means to and from said flywheel; j. frictional plunger means in operative relation to restrain and to release said friction rim; and k. electromagnetically operated means to control said frictional plunger.
Claim 7
Dependent Claim 243 words
Apparatus for recirding, at selectively spaced positions on a tape, data characters, which arrive at irregular spaced time intervals, and for playing back said data characters at any selected rate up to the maximum speed of the tape, comprising: a. a capstan shaft against which said tape is pressed; b. a continuously rotating flywheel; c. electrically controlled first clutch means responsive to the arrival of each data character for engaging said first clutch and operatively connecting said flywheel and said capstan shaft for a selected time interval and traversing said tape a selected increment of length; d. a write head past which said tape is moved by said capstan, a data character being recorded in each selected incremental length of tape; e. means for rewinding said tape; f. electrically controlled second clutch means responsive to signal from a device using the reproduced data from said tapes for engaging said second clutch means and operatively connecting said flywheel and said capstan shaft and advancing said tape past a read head; g. means responsive to the reading of the data character on the tape to disengage said second clutch and stop said tape; h. helical spring means for driving said capstan from said flywheel; i. friction rim means for engaging and disengaging said spring means to and from said flywheel; j. frictional plunger means in operative relation to restrain and to release said friction rim; and k. electromagnetically operated means to control said frictional plunger.
Claim 8
Dependent Claim 68 words
The apparatus as in claim 4 in which said helical spring means is permanently in torque transmitting connection to said capstan at one end, and is connected to said friction rim at its second end, said spring placed in torque transmitting connection to said flywheel when said friction rim is released, and is removed from torque transmitting connection when said friction rim is clamped by said frictional plunger.

References Cited (Backward Citations)

US3332084A Cited
US3275208A Cited
US3465128A Cited
US3474429A Cited
US3465349A Cited
US3454930A Cited
US3576584A Cited
US3595499A Cited
US3631427A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-01-14 1977-07-16 1978-01-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-01-14 1981-07-16 1982-01-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-01-14 1985-07-16 1986-01-15 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag