US3854669A - Cartridge for endless coil of tape - Google Patents

Cartridge for endless coil of tape Download PDF

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Publication number
US3854669A
US3854669A US00330588A US33058873A US3854669A US 3854669 A US3854669 A US 3854669A US 00330588 A US00330588 A US 00330588A US 33058873 A US33058873 A US 33058873A US 3854669 A US3854669 A US 3854669A
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US
United States
Prior art keywords
cartridge
coil
tape
pillar
connecting loop
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 - Lifetime
Application number
US00330588A
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English (en)
Inventor
S Cailliot
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from FR7204699A external-priority patent/FR2172451A5/fr
Priority claimed from FR7301333A external-priority patent/FR2214154B2/fr
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3854669A publication Critical patent/US3854669A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/02—Containers; Storing means both adapted to cooperate with the recording or reproducing means
    • G11B23/04—Magazines; Cassettes for webs or filaments
    • G11B23/06—Magazines; Cassettes for webs or filaments for housing endless webs or filaments

Definitions

  • the cartridge has a bottom, a cover and a stationary support projecting upwardly from the bot- [52] U.S. Cl. 242/55J9 A, 242/55.2l tom which is tilted at an angle to the vertical and [51] Int. Cl Bh 17/48 larger at the top than at the bottom so that a coil [58] Field Of Search...
  • Applicant has now succeeded in devising a new cartridge capable of using a coil consisting of a flexible tape such as an ordinary magnetic tape, for example and which is capable of operating regardless of the orientation of the cartridge.
  • the new cartridge Independently of the substantial savings which result from the use of a conventional sound tape, in the case of a cartridge for a sound tape, the new cartridge also has the by no means negligible advantage of making it possible to reduce the thickness of the tape constituting said coil and consequently obtaining, without an increase in the price and bulk, a greater number of turns corresponding to a greater length of tape and listening or projection time, which may be as much as double that of corresponding cartridges using a relatively stiff tape and having a substantial springiness.
  • this coil each turn of which has a generally conical shape, but all of the turns of which are spaced from each other, cannot in practice move very much inside the cartridge because of the multiplicity ofthe surfaces, lines or points of contact between the coil and the casing of the cartridge.
  • the trapezoidal shape of the part of this support which cooperates with the innermost turn, helps by its inclination to hold the coil gripped between the cartridge bottom and the top wall of the cover.
  • the new cartridge also comprises preferably, and particularly when the innermost turn has a substantial diameter, a second support similar to the first and parallel thereto.
  • This second support is pivotally mounted to turn about an axis perpendicular to the cartridge bottom and subjected to the pressure of a spring tending to separate it from the first support so that the assembly of these two supports keeps the diameter of the innermost turn at its maximum value, thus making it possible to maintain a substantially constant play between the turns of the coil regardless of the limited variations in the length of the tape mounted in the cartridge or variations in thickness due to progressive use of these tapes, while assuring rapid absorption of any decrease in the tension on this strip at the level of the connecting loop.
  • Such a rotary drive requires not only the use of a tape of increased stiffness but also the provision on the cover of the cartridge of an internal rib adapted to' serve as an abutment for the substantially straight part of the connecting loop between the reading table and two supports between which this connecting loop passes before reaching the innermost turn of the coil.
  • This rib preferably has a height substantially equal to the width of the tape used, but in order to avoid any possibility of wear against this coil it is advantageous to progressively reduce its height as it approaches the coil.
  • this cartridge comprising its bottom and cover may be snapped together after mounting the endless tape inside the cartridge, and this greatly facilitates the manufacture of such cartridges.
  • FIG. I is an exploded perspective view showing the parts constituting the cartridge and the horizontal path of the connecting loop of the tape;
  • FIG. 2 is a plan view of the part of this cartridge on which the supports are mounted, together with the coil, said part being shown without its cover;
  • FIG. 3 is a vertical sectional view taken through the cartridge along the line IIIIII of FIG. 2;
  • FIG. 4 is a top plan view ofa new cover provided with the internal rib required when the tape is to be driven in two directions;
  • FIG. is a sectional view taken along the line VV of FIG. 4.
  • FIG. 1 shows that the two parts 1 and 2 snap together to form the cartridge.
  • This figure also shows the supports 3 and 4 which are perpendicular to the bottom of the box 1, as well as the parts 3a and 4a of these supports which are of constant thickness.
  • the support 4 is mounted to pivot about an axis 6 perpendicular to the bottom 5 and a spring 6a tends to separate the two ends of the supports 3 and 4 which are of maximum height from each other.
  • the components 1 and 2 snap together in a known manner forming no part of the present invention.
  • the means used are similar to those provided in the aforesaid application Ser. No. 23,745, and will not be described again.
  • the upper part 7 of the coil lies between an inner part 7a and an outer part 7b.
  • This coil is generally conical in shape near its inner part 7a but its upper surface 7 and its lower surface 8 are respectively curved away from the level of their points of contact 8a and 7c with the bottom 5, on the one hand, and the top wall 2a, on the other hand, as may be seen in particular on FIG. 3. It will be seen from FIG. 3 that the upper surface 7 of the coil has a convex part 7d adjacent the cover 2 and the concave part 7e diametrically opposite to the convex 7c and adjacent the bottom. This shape of the coil is characteristic of the invention.
  • FIG. 3 shows the cartridge in a horizontal position. Under these conditions the coil is in contact at 8a with the bottom 5 along the full length ofa generatrix, while the lower surface 8 of the coil is supported by the two parts 3a and 4a of the supports 3 and 4 at 8! and 8c.
  • this multiplicity of possible points, lines or surfaces of contact greatly restricts the possible deformation of the coil and, in combination with the inclination of the axis of the innermost turn of the coil with respect to the pivotal axis 6 of the support 4, makes it possible to obtain the result sought, to wit, the operation of the cartridge with a flexible tape which may be a magnetic sound tape of a standard type.
  • the trapezoidal form of the supports 3 and 4 also makes it possible to hold the connecting loop 10 in a plane parallel to the side of the cartridge regardless of the orientation of this cartridge.
  • this connecting loop may twist a little at 10a, as shown for example on FIG. 2, in order to connect at with an external turn having a certain inclination with respect to the bottom 5 of the cartridge, as shown in particular on FIG 3.
  • FIG. 2 also shows the driving spindle 11 which normally exerts a traction on the innermost turn of the coil in the direction of the arrow 12.
  • FIGS. 4 and 5 show the internal rib 13 against which a substantially straight section of the connecting loop 10 rests when the tape is driven in a direction opposite to that of arrow 12 in FIG. 2 by exerting pressure on the tape in the corresponding direction.
  • the rib 13 may be replaced by a line of bosses which are not connected to each other but are nevertheless capable, in view of the stiffness of the strip used, of insuring satisfactory driving from the innermost turn of the coil.
  • Cartridge as claimed in claim 1 comprising means for receiving a driving spindle and pressure foot at a predetermined position and means for guiding said connecting loop to said position between said spindle and pressure foot.
  • Cartridge as claimed in claim 1 comprising second pillar means similar and substantially parallel to said first pillar means and also passing through said central opening, said second pillar means being mounted to swing about an axis perpendicularly mounted on said bottom, and resilient means biasing at least the portion of said second pillar means within said central opening away from the corresponding portion of said first pillar means.

Landscapes

  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
  • Adhesive Tape Dispensing Devices (AREA)
US00330588A 1972-02-11 1973-02-08 Cartridge for endless coil of tape Expired - Lifetime US3854669A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7204699A FR2172451A5 (US08197722-20120612-C00042.png) 1972-02-11 1972-02-11
FR7301333A FR2214154B2 (US08197722-20120612-C00042.png) 1973-01-15 1973-01-15

Publications (1)

Publication Number Publication Date
US3854669A true US3854669A (en) 1974-12-17

Family

ID=26216905

Family Applications (1)

Application Number Title Priority Date Filing Date
US00330588A Expired - Lifetime US3854669A (en) 1972-02-11 1973-02-08 Cartridge for endless coil of tape

Country Status (8)

Country Link
US (1) US3854669A (US08197722-20120612-C00042.png)
JP (1) JPS4890215A (US08197722-20120612-C00042.png)
BE (1) BE795213A (US08197722-20120612-C00042.png)
CA (1) CA990701A (US08197722-20120612-C00042.png)
DE (1) DE2306731A1 (US08197722-20120612-C00042.png)
GB (1) GB1391036A (US08197722-20120612-C00042.png)
IT (1) IT984735B (US08197722-20120612-C00042.png)
NL (1) NL7301398A (US08197722-20120612-C00042.png)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8401215D0 (en) * 1984-01-17 1984-02-22 Murphy T W D Tape cassettes

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2922642A (en) * 1957-01-22 1960-01-26 Bernard A Cousino Tape cartridge
US3244471A (en) * 1962-12-03 1966-04-05 Technicolor Corp Film cartridge
US3590221A (en) * 1967-05-15 1971-06-29 Burroughs Corp Tape-handling apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2922642A (en) * 1957-01-22 1960-01-26 Bernard A Cousino Tape cartridge
US3244471A (en) * 1962-12-03 1966-04-05 Technicolor Corp Film cartridge
US3590221A (en) * 1967-05-15 1971-06-29 Burroughs Corp Tape-handling apparatus

Also Published As

Publication number Publication date
IT984735B (it) 1974-11-20
JPS4890215A (US08197722-20120612-C00042.png) 1973-11-24
BE795213A (fr) 1973-08-09
CA990701A (fr) 1976-06-08
DE2306731A1 (de) 1973-08-16
NL7301398A (US08197722-20120612-C00042.png) 1973-08-14
GB1391036A (en) 1975-04-16

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