US3075679A - Web feeding device - Google Patents

Web feeding device Download PDF

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Publication number
US3075679A
US3075679A US49562A US4956260A US3075679A US 3075679 A US3075679 A US 3075679A US 49562 A US49562 A US 49562A US 4956260 A US4956260 A US 4956260A US 3075679 A US3075679 A US 3075679A
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US
United States
Prior art keywords
web
fluid
power stream
pressure
stream
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
US49562A
Other languages
English (en)
Inventor
Walter G Wadey
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.)
Unisys Corp
Original Assignee
Sperry Rand 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
Priority to NL268096D priority Critical patent/NL268096A/xx
Application filed by Sperry Rand Corp filed Critical Sperry Rand Corp
Priority to US49562A priority patent/US3075679A/en
Priority to FR870426A priority patent/FR1297447A/fr
Priority to CH947961A priority patent/CH404328A/it
Priority to GB29459/61A priority patent/GB960646A/en
Application granted granted Critical
Publication of US3075679A publication Critical patent/US3075679A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H20/00—Advancing webs
    • B65H20/12—Advancing webs by suction roller
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15C—FLUID-CIRCUIT ELEMENTS PREDOMINANTLY USED FOR COMPUTING OR CONTROL PURPOSES
    • F15C1/00—Circuit elements having no moving parts
    • F15C1/001—Circuit elements having no moving parts for punched-card machines ; for typewriters ; for keyboards; for conveying cards or tape; for conveying through tubes ; for computers ; for DC-AC transducers for information processing ; for signal transmission
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/08—Means for varying tension of belts, ropes or chains 
    • F16H7/0827—Means for varying tension of belts, ropes or chains  for disconnecting the drive
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K13/00—Conveying record carriers from one station to another, e.g. from stack to punching mechanism
    • G06K13/18—Conveying record carriers from one station to another, e.g. from stack to punching mechanism the record carrier being longitudinally extended, e.g. punched tape
    • G06K13/20—Details
    • G06K13/22—Capstans; Pinch rollers
    • 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
    • G11B15/38—Driving record carriers by pneumatic means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/206—Flow affected by fluid contact, energy field or coanda effect [e.g., pure fluid device or system]
    • Y10T137/2065—Responsive to condition external of system
    • Y10T137/2071—And causing change or correction of sensed condition

Definitions

  • the present invention relates to a means for moving tapes, sheets, or similar web-like materials. More particularly, the present invention provides a fluid operated means for controlling the rate of acceleration of weblilte materials to obtain variable but controlled velocities of the web.
  • Web feeding devices employing pneumatic forces to move the web are well known in the art.
  • One device of the prior art employs pneumatic pressures to control the moving and stopping of the web material.
  • the tape is fed between a hollow continuously rotating capstan and a stationary casing.
  • the web is set in motion by simultaneously applying pneumatic pressure to the casing and suction to the capstan in order to draw the web into frictional contact with the surface of the capstan.
  • the web is stopped by acluating a valve which applies pressure to the capstan and suction to the casing in 0-d:r to draw the web materIal to the stationary casing.
  • the speed of the web is controlled by an eiectromagnetic device which actuates a valve.
  • this device which is typical of the prior art, requires electrical and magnetic devices as well as find devices for controlling the speed of the web.
  • devices of this type do not provfde a steady or even app'ication of force to the web. This results in excessive wear of the web material and the mechanism which drives it.
  • FIGURE 1 is a perspective view of one embodiment of the invention
  • FIGURE 2 is a top view of the embodiment of FIG- URE 1;
  • FIGURE 3 depicts one manner in which the present invention may be utilized to move a web-like material in either one of two directions;
  • FIGURE 4- is a sectional view of a fluid amplifier suitable for use in the present invention.
  • FIGURE 1 the principles of the invention are illustrated by a continuously rotating drum or web carrier 1 which is driven by shaft 3 from any conventional drive means.
  • the web carrier is hollow and its cy'iadrical surface is made of a permeable maerial as indicated by the holes 5.
  • the interior of the drum is connected by means of a ho low shaft 7, a housing 9, and a fluid conduit 11 to the output of a fluid amplifier 13.
  • a source of fluid power (not shown) supplies a stout dflfifilfl Patented Jan. 29, 1963 2 power stream input to the amplifier 13 over the conduit 19.
  • Left and right control jets of the fluid ampliher are connected by means of conduits l5- and 17 to suitable sources of fluid control signals l5 and 17 and are arranged to deflect the power stream to the amplifier output conduits 11 or 21 in a manner to be described.
  • FEGURE 4 is a cross sectional view of a pure fluid amplifier suitable for use in the present invention.
  • the terms fluid operated amplifier and pure fluid amplifier are sometimes used to distinguish between those fluid amplifiers which have movable mechanical parts and those fluid amplifiers which have no moving parts other than the working fluid.
  • the term fluid amplifier refers to pure fluid amplifiers.
  • the amplifier comprises a substantially solid body of any su'table material such as metal or plastic.
  • a power signal issues from power source in the form of a fluid stream and is applied over the conduit to the duct Ell. in the absence of control signals the power stream will pass through the orifice 3?
  • the ducts are symmetrically arranged and upon striking the body 37 the power stream will divide substantially equally between the ducts 27 and 2% and appear as signals of substantially equal pressure in the conduits 11 and if a fluid control signal is applied over the conduit 17 to the duct 23, this signal will pass through an orifice and strike the power storm issuing from the orifice thus directing or deflecting the power stream to the right output duct 27. This causes an increase in pressure in the output duct 27 and a corresponding decrease in the pressure in the output duct 29. On the oiher hand, if a fluid control signal is applied over the conduit 15 to the duct 25 the control stream will pass through an orifice and deflect the power stream issuing from the orifice 39 t0 the left.
  • control si nals are applied simultaneously to the ducts .5 and 25, these signals will appear as jet streams at both control orifices and tend to counteract each other. In this event, the fluid control signal having the greater amplitude will cause a deflection of the power stream, this deflection being dependent upon the difference in magnitude between the two control signals.
  • control signals may be applied over conduit is, conduit 17, or both conduits simultaneously and the result will be an output signal in one of the ducts Z7 and 29 and an output signal of the opposite phase in the other output duct.
  • control signals applied to conduits l5 and El? control the power stream applied over the conduit 19' to thereby cause the immediate production of accurately controlled fluid pressures in the conduit ll.
  • These fluid pressures are applied through the housing 9 and the hollow shaft 7 to the interior of the drum and, because of the permeability of the drum surface, cause variations in the fluid pressure at the surface of the drum. If the fluid pressure at the surface of the drum is increased, friction between the drum surface and the surface of the web Ed is decreased and the speed of the web is reduced. On the other hand, if the fluid pres sure at the surface of the drum is decreased the friction between the surfaces of the drum and the Web is increased thercby increasing the rate of movement of the web.
  • FIGURE 2 illustrates one manner in which the drum may be driven and fluid pressure applied to the interior Where the shaft it enters the housing.
  • the conduit 11 connects with the interior of the housing and fluid pressure signals appearing on the conduit pass through the housing and the hollow shaft 7 to the interior of the drum.
  • the hollow shaft is mounted in fixed relation to the housing 9 and is provided with a further fluidseal 10 at the point where it enters the rotating drum.
  • FIGURE 3 shows how the present invention may be utilized for controlling the direction and rate of movement of a tape such as that used in computing devices.
  • a tape such as that used in computing devices.
  • Two reels 22 and 2d are provided for winding and un-- winding the tape 3t
  • These reels are adapted by conventional means to be driven in either direction depending upon the direction of movement of the tape.
  • Idler capstans 26 and 23 serve as guides to maintain the tape in proper alignment during its movement.
  • Tape drive drums 1 and la are connected by means such as that shown in FIGURES 1 and 2 to the two outputs of a fluid amplifier such as that shown in FIGURE 4. The drums are continuously driven in opposite directions as indicated by the arrows.
  • a control signal is applied to the conduit and as described with reference to FIGURE 3, deflects the power stream 19 to the left causing an increase in fluid pressure in the conduit 11 and a corresponding decrease in the fluid presure in the conduit 21.
  • the increase of fluid presure in conduit 11 causes a corresponding increase in the surface presure at the surface of durm 1 and forces the tape away from the drum.
  • the decrease in pressure in the conduit 21 is transmitted to the surface of drum 1a. The decrease in pressure at the surface of drum 1a permits greater surface friction between the tape and this drum surface thus moving the tape to the right.
  • the fluid amplifier 15 quickly and accurately controls the acceleration and speed of the tape 30 with the speed of the tape being determined by the magnitude of the signals applied to the conduits 15 7 and 17.
  • the fluid system of the present invention may be operated at negative as well as positive pressures with respect to the outside environment.
  • suction may be applied to the interior of the drum to draw the tape or web material into engagement with the surface of the drum thereby causing movement of the web.
  • Subsequent application of a less negative pressure or a positive pressure to the interior of the drum will reduce the surface tension thereby reducing the rate of movement of the web.
  • the web carrier may have other shapes and suitable motions depending upon the application of the invention to a particular use.
  • the present invention is suitable for use in devices which move web-like materials of different shapes and sizes, and is not limited in its application to the movement of tapes, this form being selected merely for the purpose of illustrating the utility of the invention.
  • a web feeding device comprising: means for producing a fluid power stream; web feeding means having a fluid permeable web driving surface; and means for varying the pressure at said web driving surface over a predetermined range of values to thereby drive said web at any one of several desired speeds by varying the frictional driving engagement between said web and said surface, said pressure varying means comprising means for producing a fluid stream having a momentum proportional to the desired web speed, means for applying said fluid stream to said power stream to selectively dezflect said power stream, and fluidconveying means for receiving and conveying to said permeable driving surface a portion of said power stream dependent upon the amount of deflection of said power stream with respect to said receiving means by said fluid stream.
  • a web feeding device comprising: means for producing a fluid power stream; web feedingrneans having a fluid permeable web driving surface; and means for varying the pressure at said web driving surface over a predetermined range of values to thereby drive said web at any one of several desired speeds by varying the frictional driving engagement between said web and said surface, said pressure varying means comprising first and 'second fluid ducts having openings for receiving said power stream, -means for exerting against said power stream a variable fluid pressure proportional to a desired webspeed to deflect and thereby vary the proportions of :said power stream received by said fluid ducts, at least one of said fluid ducts communicating with said permeable driving surface to vary the fluid pressure thereat in response to said variable fluid pressure.
  • a web feeding device comprising: means for producing a fluid power stream; first and second web driving means each having a fluid permeable Web driving surface; and means for varying the pressures at said web driving surfaces over a predetermined range of values to thereby drive said web at any one of several desired speeds by varying the frictional driving engagement between said web and said surfaces, said pressure varying means comprising first and second fluid ducts having openings for receiving said power stream, means for ex- .erting against said power stream a variable fluid pressure proportional to a desired web speed to deflect and there by vary the proportions of said power stream received by said fluid ducts; and fluid conveying means connecting Said first and second fluid ducts to said first and second permeable driving surfaces, respectively, to vary the fluid pressures thereat in response to said variable fluid pressure.
  • first and second web driving means comprise first and second rotatable drums, said permeable driving surfaces comprising the cylindrical surfaces of said drums, and means for rotating said drums in opposite directions.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Advancing Webs (AREA)
US49562A 1960-08-15 1960-08-15 Web feeding device Expired - Lifetime US3075679A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
NL268096D NL268096A (it) 1960-08-15
US49562A US3075679A (en) 1960-08-15 1960-08-15 Web feeding device
FR870426A FR1297447A (fr) 1960-08-15 1961-08-09 Perfectionnements aux systèmes d'avancement de bandes continues
CH947961A CH404328A (it) 1960-08-15 1961-08-11 Dispositivo per l'alimentazione di un foglio a nastro
GB29459/61A GB960646A (en) 1960-08-15 1961-08-15 Web feeding device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US49562A US3075679A (en) 1960-08-15 1960-08-15 Web feeding device

Publications (1)

Publication Number Publication Date
US3075679A true US3075679A (en) 1963-01-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
US49562A Expired - Lifetime US3075679A (en) 1960-08-15 1960-08-15 Web feeding device

Country Status (4)

Country Link
US (1) US3075679A (it)
CH (1) CH404328A (it)
GB (1) GB960646A (it)
NL (1) NL268096A (it)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3191858A (en) * 1963-06-05 1965-06-29 Sperry Rand Corp Keypunch input with repeat readout incorporating fluid amplifying means
US3251048A (en) * 1962-02-28 1966-05-10 Minnesota Mining & Mfg Magnetic tape transport system
US3270932A (en) * 1964-01-13 1966-09-06 Sperry Rand Corp Fluid controlled capstans with brakes
US3313462A (en) * 1966-06-02 1967-04-11 Hupp Corp Air flotation direction changing roll
US3342392A (en) * 1965-06-09 1967-09-19 Sperry Rand Corp Fluid amplifier vacuum capstan control
US3378023A (en) * 1965-04-01 1968-04-16 Pitney Bowes Inc Fluid amplifier
DE1276944B (de) * 1964-06-08 1968-09-05 Sperry Rand Corp Schrittschaltmechanismus fuer digitale Daten verarbeitende Vorrichtungen
US3434713A (en) * 1964-12-14 1969-03-25 4 D Productions Method of and system for staging productions
US3439536A (en) * 1967-02-06 1969-04-22 Western Electric Co Sensing device
US4322026A (en) * 1980-04-14 1982-03-30 Young Engineering, Inc. Method and apparatus for controlling a moving web
US5261996A (en) * 1991-01-25 1993-11-16 Minnesota Mining And Manufacturing Company Guiding system for a vacuum wheel applicator
US20030141339A1 (en) * 2002-01-30 2003-07-31 Nandakumar Vaidyanathan Methods and apparatus for prescribing web tracking in processing equipment

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2727525A (en) * 1951-07-30 1955-12-20 Lucas Industries Ltd Control means for liquid-operated servo-mechanisms
US2866637A (en) * 1956-05-21 1958-12-30 Honeywell Regulator Co Control apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2727525A (en) * 1951-07-30 1955-12-20 Lucas Industries Ltd Control means for liquid-operated servo-mechanisms
US2866637A (en) * 1956-05-21 1958-12-30 Honeywell Regulator Co Control apparatus

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3251048A (en) * 1962-02-28 1966-05-10 Minnesota Mining & Mfg Magnetic tape transport system
US3191858A (en) * 1963-06-05 1965-06-29 Sperry Rand Corp Keypunch input with repeat readout incorporating fluid amplifying means
US3270932A (en) * 1964-01-13 1966-09-06 Sperry Rand Corp Fluid controlled capstans with brakes
DE1276944B (de) * 1964-06-08 1968-09-05 Sperry Rand Corp Schrittschaltmechanismus fuer digitale Daten verarbeitende Vorrichtungen
US3434713A (en) * 1964-12-14 1969-03-25 4 D Productions Method of and system for staging productions
US3378023A (en) * 1965-04-01 1968-04-16 Pitney Bowes Inc Fluid amplifier
US3342392A (en) * 1965-06-09 1967-09-19 Sperry Rand Corp Fluid amplifier vacuum capstan control
US3313462A (en) * 1966-06-02 1967-04-11 Hupp Corp Air flotation direction changing roll
US3439536A (en) * 1967-02-06 1969-04-22 Western Electric Co Sensing device
US4322026A (en) * 1980-04-14 1982-03-30 Young Engineering, Inc. Method and apparatus for controlling a moving web
US5261996A (en) * 1991-01-25 1993-11-16 Minnesota Mining And Manufacturing Company Guiding system for a vacuum wheel applicator
US20030141339A1 (en) * 2002-01-30 2003-07-31 Nandakumar Vaidyanathan Methods and apparatus for prescribing web tracking in processing equipment
US6659323B2 (en) * 2002-01-30 2003-12-09 Presstek, Inc. Methods and apparatus for prescribing web tracking in processing equipment
US20040045995A1 (en) * 2002-01-30 2004-03-11 Presstek. Inc. Methods and apparatus for prescribing web tracking in processing equipment
US20040045994A1 (en) * 2002-01-30 2004-03-11 Presstek, Inc. Methods and apparatus for prescribing web tracking in processing equipment
US6923359B2 (en) * 2002-01-30 2005-08-02 Presstek, Inc. Methods and apparatus for prescribing web tracking in processing equipment
US6994239B2 (en) * 2002-01-30 2006-02-07 Presstek, Inc. Methods and apparatus for prescribing web tracking in processing equipment

Also Published As

Publication number Publication date
CH404328A (it) 1965-12-15
NL268096A (it) 1900-01-01
GB960646A (en) 1964-06-10

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