US3361134A - Transfer means for strip random access system - Google Patents

Transfer means for strip random access system Download PDF

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Publication number
US3361134A
US3361134A US497274A US49727465A US3361134A US 3361134 A US3361134 A US 3361134A US 497274 A US497274 A US 497274A US 49727465 A US49727465 A US 49727465A US 3361134 A US3361134 A US 3361134A
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US
United States
Prior art keywords
strip
strips
capstan
magazine
rollers
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
US497274A
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English (en)
Inventor
Jr Cecil H Burns
Estates Palos Verdes
Meryl E Miller
Louis W Thies
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.)
NCR Voyix Corp
National Cash Register Co
Original Assignee
NCR Corp
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
Application filed by NCR Corp filed Critical NCR Corp
Priority to US497274A priority Critical patent/US3361134A/en
Priority to GB41068/66A priority patent/GB1100818A/en
Priority to CH1467166A priority patent/CH443740A/fr
Priority to NL6614423A priority patent/NL6614423A/xx
Priority to DEN29348A priority patent/DE1298328B/de
Priority to BE688312D priority patent/BE688312A/xx
Priority to DK534666AA priority patent/DK114631B/da
Priority to SE14058/66A priority patent/SE317710B/xx
Priority to NO165178A priority patent/NO118879B/no
Priority to FR80187A priority patent/FR1514143A/fr
Application granted granted Critical
Publication of US3361134A publication Critical patent/US3361134A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
    • G06K17/0003—Automatic card files incorporating selecting, conveying and possibly reading and/or writing operations
    • G06K17/0006—Automatic card files incorporating selecting, conveying and possibly reading and/or writing operations with random access selection of a record carrier from the card-file, e.g. the carriers are suspended on the selection device which in part of the card magazine
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations

Definitions

  • This invention relates generally to random-access storage systems employing flexible magnetic storage strips, and, more particularly, to improved means for controlling the transfer of randomly selected strips from a magazine to a rotating capstan.
  • a random-access storage system of the prior art is disclosed in a copending US. patent application Serial No. 12,032, filed on Mar. 1, 1960, inventor Eugene H. Irasek, and assigned to the same assignee as this application.
  • system information is magnetically recorded on strips of flexible magnetic material.
  • the strips are manufactured by applying suitable coatings of magnetic oxide material to a substrate of polyester film.
  • the strips are provided with coded retaining tabs formed at the upper ends thereof and are disposed to depend by their tabs from suitable selection and suspender means which forms part of a strip storage magazine.
  • One strip at a time can be selectively released from the lower end of the magazine, to fall freely, i.e. without any mechanical aid, through a chamber towards a rotating capstan.
  • a suction produced through perforations in the surface of the capstan draws the strip to the capstan whereby the strip is rapidly accelerated and carried by the capstan past a magnetic transducer region having freading and writing magnetic transducer means.
  • the capstan also imparts suflicient momentum to the strip to cause the strip, under the action of centrifugal force, to follow an upward path through an appropriate guideway back to the magazine.
  • the guideway guides the moving strips up over the magazine and down to a stopped position within a magazine loading means which, in turn, loads the strips back onto the suspender means of the magazine.
  • a uniform stream of air is blown down through all the strips within the magazine to insure that the depending strips in the magazine are maintained in spaced-apart relationship, thereby assisting a selected strip to fall out of the bottom of the magazine.
  • the system is able to store, for example, two hundred fifty-six strips within the magazine wherein each strip is, for example, 14 inches long and 3% inches wide, and has over two hundred thousand bits recorded on the magnetic oxide layer coated thereon. Since any desired strip may be selectively released from the suspender means, dropped to a transducer means, operated on, returned to a stopped position, and finally loaded back onto the suspender means within a fraction of a second, relatively rapid access is available to any one of the strips. However, with the advent of faster computers still faster access time to Patented. Jan. 2, 1968 the strips is required so that the computers may operate more efliciently.
  • one object of the present invention is to provide means in a strip random-access system for reducing the access time to any one of the strips.
  • Another object of the present invention is to provide a more positive control for transferring a randomly selected strip from a magazine to a rotating capstan at such a speed that the rate at which the strip is accelerated by the capstan is reduced.
  • Another object of this invention is to reduce excessive Wear on randomly selected strips being transferred from a magazine to a capstan by providing suction and resilient means in the walls of the V-shaped chamber connecting the magazine to the capstan to thereby further control the motion of the strip as it is being positively transferred therethrough.
  • the present invention provides a strip accelerator means for engaging any randomly selected strip after it is released from a selection and suspender means but still in the magazine.
  • the strip acceleration means provides a more positive control for the selected strip than previously provided in the prior art while the selected strip is being transferred towards a rotating capstan.
  • the strip acceleration means comprises two continuously rotating driving rollers disposed on opposite sides of the strip storage magazine adjacent the vertical edges of the strips. The edges of each strip are provided with arcuate indentations and the driving rollers are disposed relative to the arcuate indentations so that when the strips are depending from the selection and suspender means they are not contacted by the rollers.
  • FIG. 1 is a pictorial view of the random-access storage system
  • FIG. 2 is an enlarged pictorial view of the magazine with the magazine cover and loader removed and a portion of the stack of strips cut away showing the strip accelerator and a selected strip ready to be engaged by the surface of the rotating capstan;
  • FIG. 3 is an enlarged pictorial view of the central portion of the magazine showing another view of the strip accelerator
  • FIG. 4 is a sectional elevation of the magazine showing a released strip being forced downward by the strip accelerator
  • FIG. 5 is a pictorial view of a flat, flexible information storage strip showing the arcuate indentations formed on opposite vertical edges thereof;
  • FIG. 6 is an elevation of the V-shaped chamber disposed below the magazine showing the proximate structure in partial section.
  • the various mechanical components of the random-access storage system are shown assembled on an upright back plate 11.
  • the upright plate 11 is suitably mounted on a frame 13, partially shown.
  • the frame 13 is part of an enclosed console (not shown) that may also enclose suitable electronic control circuits for the system.
  • the electronic control circuits provide the signals to activate various mechanical components of the system.
  • the signals are fed through suitable wiring that is disposed on the back side of the plate 11 and substantially hidden from view.
  • This embodiment of random-access systems stores information on strips 12 in the form of magnetic recordings.
  • a typical strip is shown in FIG. 5.
  • the strips 12 are flat, flexible atnd relatively long in relation to their width and are made of, for example, magnetic oxide coated on a flexible polyester base such as polyethylene terephthalate.
  • the size of each strip is 14 inches long, 3% inches wide and .006 inch thick.
  • the thickness of the strips is shown exaggerated in its drawings for illustrative purposes only.
  • the strips 12 are provided with coded tabs 14 (formed at the upper edge), side notches 15, and arcuate indentations 61, the purpose of which will be described hereinafter. As shown in FIGS.
  • the strips 12 are disposed to depend lengthwise from a suspender means 16 that is fixed to the upright plate 11, and as disclosed in the above-mentioned Irasek application, Ser. No. 12,032, the suspender means 16 comprises eight horizontally disposed rod-like selector elements 17 and a pair of side rod-like gating elements which engage the coded tabs 14- and the pair of side notches 15, respectively, so that the strips 12 can be selectively released by first rotating certain ones of the rod-like selector elements 17 and then rotating both gating elements 21 outward from the strips to the position shown in FIG. 4. These rod-like elements are rotated by a solenoid means 18 (FIG. 1) which includes two banks of five solenoids 19, only the upper bank of solenoids being shown in FIG. 2.
  • a solenoid means 18 FIG. 1 which includes two banks of five solenoids 19, only the upper bank of solenoids being shown in FIG. 2.
  • One solenoid is provided for controlling each of the selector elements 17 and each of the gating elements 20.
  • the solenoids 19 are activated by selective signals supplied by the electronic control circuits.
  • the electronic control circuits activate any one of the eight solenoids coupled to the respective selector elements 17, the elements 17 pivot, as required, from the right to the left position as viewed in FIG. 4 to select a particular strip.
  • the electronic control circuits activate the two solenoids coupled to the gating elements 20 to pivot these elements from their position within the notches 15 outwardly releasing the selected strip 12a. As shown in FIG.
  • the strips 12 are maintained in spaced-apart relationship by a stream of air passing through the upright plate 11 and directed by a suitable air duct 21.
  • the stream of air is directed down through the strips 12.
  • the strips while on the suspender means 16 are enclosed within a magazine 22 whose bottom communicates with a V-shaped chamber 23.
  • any released strip is able to drop from the suspender means. After a released strip drops freely, i.e. without any mechanical aid, e.g., a few thousandths of an inch the released strip is engaged by a strip accelerator means 26 and is rapidly driven downward into the V-shaped chamber 23.
  • the strip accelerator means 26 being a separately driven positive control, causes a released strip to arrive at a rotating capstan 27 much faster than a free falling strip would arrive at the rotating capstan 27.
  • the strip accelerator means 26 will be described more fully hereinafter.
  • the V-shaped chamber 23 includes two converging walls 28 and 29 for guiding the lower edge of any released strip towards the periphery of the rotating capstan 2'7.
  • the strip is attracted to the rotating capstan 27 by a suction created by drawing air through suitable holes 31 (FIG. 6) formed on the capstan.
  • the rotating capstan 27 carries the strip past a transducer means 33 (FIG. 1) that has read and write magnetic heads located at the upper end thereof, adjacent the capstan 27.
  • the read and write signals are transmitted to and from the transducer means 33 through a suitable wire cable 34.
  • a gate means located in the area of arrow 35 is actuated to cause the strip, due to centrifugal force, to leave the capstan 27 and enter a vertical guideway 38.
  • the strip is guided upwards within the vertical guideway 38 and enters an arc-guideway 39.
  • the strip interrupts a light beam shining on a photocell 4-1, and a signal is produced by the electronic control circuits. The signal indicates that a strip is returning to the magazine 22, and a loading means 42, which loads strips into the magazine, is prepared to receive the strip.
  • the returning strip entering the loading means is accelerated or decelerated by a strip-control roller assembly 43 to a predetermined speed.
  • a strip loading cycle is performed by the loading means in response to a command signal generated by the electronic control circuits.
  • the strip is again disposed within the magazine 22 and suspending from the suspender means 16.
  • FIG. 2 there is shown an enlarged pictorial view of one embodiment of the strip accelerator means 26 assembled on the magazine 22. For clarity, the magazine cover and the loader means 42 are not shown in FIG. 2.
  • the strip accelerator means includes a driving roller 44 disposed at the back of the magazine 22 and another driving roller 4-7 disposed at the front of the magazine 22.
  • the driving rollers 44' and 47 are suitably supported by a frame 48, so that their axes of rotation are disposed horizontally and parallel to the sides of the stack formed by the edges of the strips depending in magazine 22.
  • the driving rollers 44 and 47 are powered through suitable pulleys 52 and 53 fixed respectively thereto.
  • the pulleys 52 and 53 are continuously rotated by an electric motor 54 driving a belt 56 engaging the pulleys.
  • the belt 56 contacts the pulleys 52 and 53 so that the two pulleys rotate in opposite directions.
  • the rotational speed of the driving rollers is set to provide the least access time to a randomly selected strip. For example, if the driving rollers 44 and 47 rotate too fast the driving rollers tend to slip on the edges of the strip and the strip is not efficiently accelerated. If the driving rollers 44 and 47 rotate too slowly there is relatively no slipping but the strip travels at a speed too slow relative to the speed of the capstan.
  • the strips are depending from the Suspender means 16, their arcuate indentations 61 are disposed between the driving rollers 44 and 47.
  • the arcuate indentations 61 conform to the shape of the driving rollers 44 and 47.
  • the driving rollers are disposed adjacent the indentations with a clearance of, for example, .005 of an inch between each driving roller and the conforming curvature of the indentation.
  • the indentations 61 are provided with sufhcient clearance so that the driving rollers 44 and 47 do not contact the strips even though the strips 12 tend to sway while depending from the elements 17 and 20.
  • the strip falls freely for a short distance, for example, on the order of a few thousandths of an inch, causing the edges of the released strip to be contacted by the driving rollers and be forced downwards.
  • Strip 12a is a typical released strip being forced downward by the driving rollers 44 and 47 wherein the spring action created by lateral bowing of the strip exerts a force against the rollers.
  • the driving rollers 44 and 47 have a coating 51 made of, for example, natural rubber having a Shore Hardness of approximately 70 duromoters.
  • the hardness of the rubber coatings 51 is suflicient to prevent cutting or damage thereto by the sharp edges of the strips.
  • the rubber coatings 51 deform slightly while the strip 12a is forced downward by the driving rollers into the V-shaped chamber 23.
  • the position of the driving rollers above the V-shaped chamber 23 is such that when the lower edge of the released strip is adjacent the lower edge 62 of the wall 29 of chamber 23, the upper end of the strip is free of the driving rollers 44 and 47, as illustrated by the released strip 1212.
  • the released strip reaches the capstan much faster than if no such accelerating means 26 is provided.
  • FIG. 6 there is shown means located within the chamber 23 for further inhibiting the accelerated strip 12c from whipping about.
  • the means includes a plurality of bores 63 and 64 formed in wall 28 of chamber 23. The bores 63 and 64 open into a vacuum chamber 66 from which air is drawn through a hole 67 formed in plate 11.
  • the wall 28 has a resilent layer 69 made of, for example, neoprene, to absorb any whipping force produced by a strip slapping thereagainst.
  • the wall 29 has also a plurality of bores, such as bore 71, which connects the chamber 23 to the capstan chamber so that the suction formed on the surface of the capstan draws air through the bore 71.
  • Wall 29 also has a resilent layer 72 similar to layer 69 on wall 28 to absorb any whipping force produced by a strip slapping thereagainst.
  • the access time for any one of the strips is on the order of less than half the access time for systems without a strip accelerator means 26.
  • An apparatus for providing random access to any strip of a group of strips comprising: first means for supporting said strips by the upper end thereof causing said strips to hang in a vertical position, second means co-operating with said first means for selectively dropping one strip at a time therefrom, third means for engaging a strip selected from said first means and transporting said strip to a place of use, and acceleration means disposed below said first means and positioned along the side edges of the strips while they are supported by said first means, said acceleration means being spaced from said third means a distance at least the length of the strips to avoid simultaneous contact of said third means and acceleration means with a selected strip, said acceleration means adapted for engaging any randomly selected strip after the strip has dropped freely for a short distance and accelerating the strip toward said third means.
  • An apparatus for providing random access to any strip of a group of strips comprising: first means for supporting said strips by the upper end thereof causing said strips to hang in a vertical position, said strips provided with indentations on the vertical side edges thereof, second means for selectively dropping one strip at a time from said first means, third means for engaging a strip selected from said first means and carrying said strip past a place of use, passageway means connecting said first means to said third means for guiding any selected strip to said third means, accelerator means comprising rotating rollers positioned within the spacings formed by said indentations on the vertical edges of the strips when the strips are being supported by said first means, said rotating rollers adapted for engaging any randomly selected strip after the strip has dropped freely a short distance from said first means and accelerating the strip through said passageway means toward said third means, and pneumatic means for preventing a strip passing through said passageway means from whipping about within said passageway means.
  • An apparatus for providing random access to any strip of a group of strips comprising: first means for supporting said strips by the upper end thereof and disposing said strips to hang in a vertical position, oriented face to face, forming a uniform stack;
  • each of said strips having indentations formed on each of the vertical edges thereof; second means for selectively dropping one strip at a time from said first means; capstan means for engaging a strip selected from said first means and transporting said strip past a place of use; passageway means connecting said first means to said capstan means for guiding any selected strip to said capstan means; and roller means disposed along at least one vertical edge of each or" said strips in said stack within the spacing formed by said indentations when the strips are being supported by said first means, said roller means adapted to engage a selected strip at its vertical edge and drive said strip through said passageway means towards said capstan means.
  • An apparatus for providing random access to any one of a group of strips having indentations formed on their edges comprising: first means for supporting said strips by the upper end thereof and disposing said strips to hang in a vertical position, oriented face to face, forming a uniform stack; second means for selectively dropping one strip at a time from said first means; a rotating capstan for engaging any strip selected from said first means and transporting said strip past a place of use; a V-shaped chamber having opposing converging walls connecting said first means to said capstan for receiving any one of the selected strips and guiding the strip to said capstan; two rotating rol ers disposed on opposite sides of said first means and positioned to nest within the respective spaces formed by said indentations when said strips are hanging on said first means to cause the edges of a selected strip, after falling a short distance from said first means, to contact said rollers forcing said selected strip through said V-shaped chamber towards said capstan; said converging walls having openings through which air is drawn to cause the selected strip when in proximity to said walls
  • An apparatus for providing random access to any one of a group of strips comprising: first means for supporting said strips by the upper end thereof and disposing said strips to hang in a vertical position, oriented face to face, forming a uniform stack; each of said strips having indentations formed on the vertical edges thereof; second means for selectively dropping one strip at a time from said first means; a rotating capstan disposed to engage a strip selected from said first means and carry said strip past a place of use; passageway means connecting said first means to said capstan for guiding any selected strip to said capstan; and accelerator means comprising continuously rotat' '7 rollers positioned within the spacings forme by said indentations when the strips are being supported by said first means, said rotating roller adapted to engage the vertical edges of any randomly selected strip after being released by said first means for accelerating said strip through said pasageway means towards said capstan means to mini iize the acceleration required to be made on the strip upon being engaged by said rotating capstan.
  • An apparatus for providing random access to any strip of a group of strips comprising: first means for supportinr said strips by the upper end thereof and disposing said strips to hang in a vertical position, oriented face to face, forming a uniform stack; each of said strips having an indentation formed on a vertical edge thereof; second mean for selectively dropping one strin at a time from said first means; capstan means for a strip selected from said first means and transporting said strip past a place of use; passageway means connecting said first means to said capstan means for guiding any selected strip to said capstan means; and roller means disposed long at least one vertical edge of each said strips said stack to cause said roller means to em; ge a selected strip at its vertical edge and drive said strip through said passageway means towards said capstan means; said roller means including at least one roller disposed to rot e about a substantially ho izontal axis, roller being positioned to nest with the space formed by said indentations when said st; are hanging on said first means to cause the vertical
  • An apparatus for providing random access to any strip of a group of strips comprising: first means for supporting said strips by the upper end thereof and disposing said strips to hang in a verticai position, oriented face to face, forming a uniform stack; each of said strips having indentations formed on both vertical edges thereof; second means for selectiveiy dropping one strip at a time from said first means; capstan means for engaging trip selected from said first means and transporting said st in past a place of use; passageway means cotnecting said first means to said capstan means for strip to said capstan means; and ose' along the vertical edges of each tacit to cause said roller means to roller means i of said strips in engage a selected 0 strip throu a.
  • said I'Qllfil' means including two rollers disposed on Opposite sides of said first means and positioned to nest within the respective spaces formed by indentations when said strips are hanging on said first means to cause the vertical edges of any selected strip falling from said uniform stack to contact said rollers, after said selected strip falls freely for a short distance from said first means, to force said seiected strip towards said capstan means, while the strips remaining in said uniform stack do not contact the rollers.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Discharge By Other Means (AREA)
  • Advancing Webs (AREA)
US497274A 1965-10-18 1965-10-18 Transfer means for strip random access system Expired - Lifetime US3361134A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
US497274A US3361134A (en) 1965-10-18 1965-10-18 Transfer means for strip random access system
GB41068/66A GB1100818A (en) 1965-10-18 1966-09-14 Random access data store
CH1467166A CH443740A (fr) 1965-10-18 1966-10-11 Appareil d'emmagasinage à accès au hasard
NL6614423A NL6614423A (da) 1965-10-18 1966-10-13
DEN29348A DE1298328B (de) 1965-10-18 1966-10-15 Schnellzugriffsdatenspeicher
BE688312D BE688312A (da) 1965-10-18 1966-10-17
DK534666AA DK114631B (da) 1965-10-18 1966-10-17 Datalager med bøjelige magnetiske strimler.
SE14058/66A SE317710B (da) 1965-10-18 1966-10-17
NO165178A NO118879B (da) 1965-10-18 1966-10-17
FR80187A FR1514143A (fr) 1965-10-18 1966-10-17 Appareil d'emmagasinage à accès au hasard

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US497274A US3361134A (en) 1965-10-18 1965-10-18 Transfer means for strip random access system

Publications (1)

Publication Number Publication Date
US3361134A true US3361134A (en) 1968-01-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
US497274A Expired - Lifetime US3361134A (en) 1965-10-18 1965-10-18 Transfer means for strip random access system

Country Status (10)

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US (1) US3361134A (da)
BE (1) BE688312A (da)
CH (1) CH443740A (da)
DE (1) DE1298328B (da)
DK (1) DK114631B (da)
FR (1) FR1514143A (da)
GB (1) GB1100818A (da)
NL (1) NL6614423A (da)
NO (1) NO118879B (da)
SE (1) SE317710B (da)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3291133A (en) * 1963-10-14 1966-12-13 Ncr Co Strip random-access system
US3292631A (en) * 1963-04-11 1966-12-20 Randomatic Data Systems Inc Data processing equipment

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3292631A (en) * 1963-04-11 1966-12-20 Randomatic Data Systems Inc Data processing equipment
US3291133A (en) * 1963-10-14 1966-12-13 Ncr Co Strip random-access system

Also Published As

Publication number Publication date
NL6614423A (da) 1967-04-19
FR1514143A (fr) 1968-02-23
SE317710B (da) 1969-11-24
DK114631B (da) 1969-07-21
NO118879B (da) 1970-02-23
GB1100818A (en) 1968-01-24
BE688312A (da) 1967-03-31
CH443740A (fr) 1967-09-15
DE1298328B (de) 1969-06-26

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