GB803252A - Improvements in and relating to magnetic tape machines - Google Patents
Improvements in and relating to magnetic tape machinesInfo
- Publication number
- GB803252A GB803252A GB22457A GB22457A GB803252A GB 803252 A GB803252 A GB 803252A GB 22457 A GB22457 A GB 22457A GB 22457 A GB22457 A GB 22457A GB 803252 A GB803252 A GB 803252A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tape
- arms
- speed
- rollers
- capstans
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
- G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
- G11B15/43—Control or regulation of mechanical tension of record carrier, e.g. tape tension
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
- G11B15/56—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function the record carrier having reserve loop, e.g. to minimise inertia during acceleration measuring or control in connection therewith
Landscapes
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
- Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
- Tension Adjustment In Filamentary Materials (AREA)
Abstract
803,252. Driving sound film, wire or tape. AMPEX CORPORATION. Jan. 2, 1957 [Jan. 6, 1956], No. 224/57. Class 40 (2). In a magnetic tape recorder means are provided for maintaining correct tape tension during rapid changes of speed. The capstan 12 (Fig. 1) is driven continuously by an electric motor and drives capstan 13 by friction. Rollers 22 cooperate with solenoids 23 to press the tape against one or other of the capstans and draw it across the face of the magnetic head 21. Between the capstans and the reels the tape passes over fixed rollers 26, 27 and 28 and movable rollers 29 and 30 carried by the swinging arms 31, which pivot about pins 47 and are spring- tensioned in a direction tending to increase the length of the loops. Each reel is driven by a motor 33 (Fig. 3) having two windings, one of which, 35, is continuously energized and the other, 34, is connected through a switch 42. Rapid change of tape speed causes variations in the amount of tape between the reels allowing the arms 31 to move. Each arm is mechanically connected to a switch 42 and closes either contacts 1 and 5 or one or more of contacts 1, 2, 3 and 4. This results in either reversal or change of speed of the motors until the arms 31 return to the mid-position. Operation of the switches 42 is damped by a dashpot to prevent hunting.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US55780056A | 1956-01-06 | 1956-01-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB803252A true GB803252A (en) | 1958-10-22 |
Family
ID=24226930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22457A Expired GB803252A (en) | 1956-01-06 | 1957-01-02 | Improvements in and relating to magnetic tape machines |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE1165088B (en) |
| GB (1) | GB803252A (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2166551A (en) * | 1932-03-28 | 1939-07-18 | Reeves Pulley Co | Photoelectric control of variablespeed mechanism |
| GB603563A (en) * | 1945-10-25 | 1948-06-17 | Marshall Sons And Company Ltd | Improvements in wire drawing machines |
| CH247754A (en) * | 1946-04-15 | 1947-03-31 | Autophon Ag | Steel clay device based on the draft principle. |
| US2547201A (en) * | 1949-06-30 | 1951-04-03 | Westinghouse Electric Corp | Loop control system |
| CA532629A (en) * | 1950-03-14 | 1956-11-06 | De Clerck Fernand | Winding and unwinding mechanism for magnetic recorders of wide and/or long tapes |
| DE932386C (en) * | 1951-09-01 | 1955-08-29 | Telefunken Gmbh | Drive for tape or wire-shaped recording media |
| NL94902C (en) * | 1952-05-28 |
-
1957
- 1957-01-02 GB GB22457A patent/GB803252A/en not_active Expired
- 1957-01-03 DE DEA26312A patent/DE1165088B/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE1165088B (en) | 1964-03-12 |
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