US3227344A - Document feeding device having clutch and brake means - Google Patents

Document feeding device having clutch and brake means Download PDF

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Publication number
US3227344A
US3227344A US325991A US32599163A US3227344A US 3227344 A US3227344 A US 3227344A US 325991 A US325991 A US 325991A US 32599163 A US32599163 A US 32599163A US 3227344 A US3227344 A US 3227344A
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United States
Prior art keywords
band
tape
bands
document
feeding device
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
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US325991A
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English (en)
Inventor
Donald E Rutter
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.)
International Business Machines Corp
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International Business Machines Corp
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Filing date
Publication date
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Priority to US325991A priority Critical patent/US3227344A/en
Priority to GB43038/64A priority patent/GB1019488A/en
Priority to DEJ26912A priority patent/DE1244660B/de
Priority to FR996192A priority patent/FR1417468A/fr
Application granted granted Critical
Publication of US3227344A publication Critical patent/US3227344A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/02—Feeding articles separated from piles; Feeding articles to machines by belts or chains, e.g. between belts or chains
    • B65H5/021—Feeding articles separated from piles; Feeding articles to machines by belts or chains, e.g. between belts or chains by belts
    • B65H5/023—Feeding articles separated from piles; Feeding articles to machines by belts or chains, e.g. between belts or chains by belts between a pair of belts forming a transport nip
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C3/00—Sorting according to destination
    • B07C3/02—Apparatus characterised by the means used for distribution
    • B07C3/08—Apparatus characterised by the means used for distribution using arrangements of conveyors
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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
    • G06K13/02—Conveying record carriers from one station to another, e.g. from stack to punching mechanism the record carrier having longitudinal dimension comparable with transverse dimension, e.g. punched card
    • G06K13/07—Transporting of cards between stations
    • G06K13/077—Transporting of cards between stations with intermittent movement; Braking or stopping movement
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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
    • G06K13/02—Conveying record carriers from one station to another, e.g. from stack to punching mechanism the record carrier having longitudinal dimension comparable with transverse dimension, e.g. punched card
    • G06K13/08—Feeding or discharging cards
    • G06K13/10—Feeding or discharging cards from magazine to conveying arrangement
    • G06K13/103—Feeding or discharging cards from magazine to conveying arrangement using mechanical means
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/20—Belts
    • B65H2404/26—Particular arrangement of belt, or belts
    • B65H2404/261—Arrangement of belts, or belt(s) / roller(s) facing each other for forming a transport nip

Definitions

  • Feeding devices capable of feeding nonmagnetic card and sheet documents are well known. However, there is a problem in providing a feeding device which is capa- ⁇ ble of also handling tape material and documents of varying thickness and composition.
  • one of the known feeding devices includes a pair of endless bands mounted ⁇ adjacent each other to form, at their near adjoining surfaces, ⁇ a document receiving passageway. Both of the bands are driven continuously in a common direction along the passageway.
  • a magnetic clutch mechanism is disposed beneath one of the bands which is made of a nonmagnetic material.
  • the other band which is made of a magnetic material, is attracted toward and drawn into engagement with the document so as to feed it in the direction of the bands.
  • magnetic ux must pass through thedocument to draw the magnetic band into engagement with the document.
  • Another general object of this invention is to provide a document feeding device of the endless band type which is operable without magnetic flux traversing the documents.
  • a more speciic object of this invention is to provide a document feeding device having a novel clutchmeans which is capable of forcing the ⁇ bands into feeding engagement with the documents and, at the same time, initiating the release of the brake means.
  • a further specic object of this invention is to provide a document feeding device having a novel brake means which is capable of stopping the documents without arresting the continuous movement of the endless bands.
  • one aspect of the invention contemplates a device having a novel clutch means which, when activated, is operable for forcing one of the endless bands towards the other band so that both bands are brought into feed gripping engagement with the document.
  • the device includes a novel brake means which is constructed to arrest the moving document, but not the endless bands, and to receive the force exerted by the activated clutch means so as to release its braking action and again permit the document to be fed by the endless bands.
  • the document feeding device is constructed so that each of the endless bands is maintained in a taut condition during both the feeding and nonfeeding conditions of the device.
  • each of the endless bands is provided with at least one novel tensioning means which exerts an outwardly directed force against its associated band to maintain the band in a taut condition when the clutch means is inactive and which coacts with the clutch means such that they produce a resultant force to maintain the band taut when the clutch means is active.
  • FIG. l is a perspective View with broken away sections to show the document feeding device feeding a tape in the direction indicated by the arrow.
  • FIG. 2 is a perspective view of two alternately operating document feeding devices, one feeding the tape in a forward direction and the other feeding the tape in a reverse direction.
  • FIG. 3 is an enlarged, fragmentary, perspective view showing the arrangement of ⁇ the clutch and brake means.
  • FIG. 4 is an end sectional view to show the relationship between the clutch and brake means when the brake means is applied to decelerate and stop the tape.
  • FIG. 5 is an end sectional view to show the relationship between the clutch and brake means when the clutch means is operating to feed the tape.
  • FIG. 6 is an enlarged exploded perspective view showing the parts of the ⁇ band tensioning means.
  • FIG. 7 is a perspective view showing the document feeding Idevice controlling an endless belt which is feeding the documents out of a hopper.
  • the numeral 10 generally designates a document feeding device which is used to feed card, tape, and sheet material, but for the purpose of this description only will be shown and described as feeding tape material referenced by the numeral 12.
  • support means is provided and, preferably, includes upper and lower members 11, 13 which are spaced apart a distance slightly greater than the thickest document to be fed by the device. Both ends of the upper member 11 are recessed to form extensions 17. A pulley 15 is rotatably mounted on each extension 17. Similarly, the ends of the lower member 13 are recessed to form ⁇ extensions 17, each of which rotatably supports a pulley 15.
  • an endless band 14 is disposed about pulleys 15 of the upper support member 11 and an endless band 16 is disposed about the pulleys 15 of the lower support member 13 so that the opposing, near adjoining surfaces of the bands lie along opposite sides of the tape receiving passageway and are adapted to move toward and away from each other.
  • the outer surface of each pulley is provided with a groove 19 (FIG. 6) slightly wider than the width of the band and each groove is coated with a high friction material, such as rubber or a relatively soft plastic, to increase the frictional Contact between the pulley and the band.
  • One of the pulleys associated with each support member is connected to one of a pair of parallel mounted shafts 18, which are oppositely rotated in the directions indicated by the arrows 18a, 20a and cause the pulleys 15 connected thereto and, in turn, the bands 14, 16 to move in the same respective directions and in a common direction along the passageway.
  • a band engaging member or drive shoe 24 is disposed along the inner side of one of the bands, herein band 14.
  • the upper support member 11 is provided with clutch means for moving the shoe 24 downwardly which, as best shown in FIG. 5, presses the band 14 against the tape 12 and moves the tape downwardly against the band 16. In this way, the tape is gripped by the opposing surfaces of the bands and is moved in the direction indicated by the arrow 10a.
  • brake means is provided in the lower support member 13 and includes a document engaging member or brake shoe 28- which, as best shown in FIG. 4, is constructed to press the tape against the bottom portion 26 of the upper support member 11.
  • the brake shoe 28 normally is biased upwardly as shown in FIG. 4 and pinches the tape between it and the bottom portion of the member 11. It is desirable, therefore, to retract the brake shoe and release the latters braking acti-on on the tape while the tape is being fed.
  • the feeding device 10 is arranged so that when the drive shoe 24 is moved downwardly for feeding the tape, it forces the brake shoe 28 downwardly and as shown in FIG.
  • the document feeding device 10 as shown in FIG. l is capable of feeding the tape 12 in a forward direction, if desired, it could be capable of also feeding the tape in a reverse direction by driving each of its shafts 18, 20 with a bidirectional motor (not shown). However, this would produce a substantial time lag or delay in reversing the feed of the tape due to the time it takes for the motor to reverse its direction of rotation. To practically eliminate this time lag or delay while retaining the bidirectional feeding of the tape, two document feeding devices operated by unidirectional drive means, are positioned in series relationship to each other to serve as a unit for moving the tape in both forward and reverse directions.
  • the feeding device 10 shown in FIG. 2 is mounted in series with the document feeding device 100 having a pair of endless bands 114, 116 schematically shown (the details are the same as shown in FIG. 1).
  • the bands of the feeding device 100 are moved by a pair of shafts 118, 120 rotatable in the directions indicated by the arrows 118a, 120a and opposite to the directions of rotation of the corresponding shafts 18, 20 of the feeding device 10.
  • a single motor may be used in conjunction with a suitable gear train for providing the indicated directions of rotation of the shafts 18, 20, 118, 120 or any well known Way of driving the shafts in these directions, as for example, a mot-or on each shaft may be used.
  • the tape 12 is moved in the direction indicated by the arrow 10a when the clutch means of the feeding device 10 is activated.
  • the clutch means of the feeding device is inactive while, preferably, its brake means is in its normal braking position and places a slight tension on the moving tape.
  • the clutch means of the feeding device 10 is deactivated thereby removing its positive feed in the direction 10a. This also activates the brake means of the device 10 which, along with the already active brake means of the device 100, applies a sufficient frictional force to rapidly stop tape 12.
  • the clutch means of the device 100 is activated and causes the release of the braking action by the device 100 and the instantaneous feeding of the tape 12 in the direction indicated by the arrow 10011.
  • the brake means of the device 10 will be left in its normal braking position to tension the moving tape. Also, it will complement the braking action of the brake means of the device 100 to permit a rapid deceleration of the tape when the clutch means of the device 100 is deactivated.
  • the drive shoe 24 preferably rests on the inner surface of the endless band 14 and is made of plastic or a similar low friction material so that its band engaging surface will only offer a minimum of frictional resistance to the movement of the band.
  • a pair of abutments 30 and a supporting ridge 32 are formed integral therewith.
  • an electromagnet 36 is housed in a casing 38 rigid with the support means 11 (FIG. 4) of the feeding device 10 and is adapted to attract a movably mounted armature 40.
  • the armature 40 consists of a flat plate of magnetic material extending across and normally biased away from the pole faces 42 of the magnet 36 by a pair of plunger assemblies aligned with the abutments 30.
  • the plunger assemblies transmit the downward movement ⁇ of the armature to the drive shoe, which, in turn, presses the band 14 towards the band 16 so that both bands are brought into feed gripping engagement with the tape.
  • each of the assemblies include a plunger 44 extending from the armature 40 through the casing 38 of the electromagnet to its associated abutment 30 of the drive shoe.
  • a spring 46 is coiled around each plunger and contained within the casing 38 by a bushing 48.
  • the upper end of each plunger 44 in this instance, is threaded into the bushing 48 and is attached to the armature by a nut 50.
  • each end 52 of each of the plugers 44 may be rigidly attached to the drive shoe, in the present instance, each end 52 only contacts a metallic ball 54 which is partially contained in a dished out portion S5 of the abutment 30 associated with the plunger.
  • These balls 54 serve as flexible ball joint suspensions to compensate for any inaccuracies in the alignment of the plunger assemblies and their corresponding abutments 30.
  • the bottom portion 26 of the upper support member 11 as best shown in FIG. 5 includes surfaces 57 which are not covered by its associated endless band 14 and are adapted to engage the tape.
  • the brake shoe 28 is formed with the shoulders 58 to provide opposing surfaces 59 which are movable above its associated band 16 toward the surfaces 57 so as to clamp the tape 12 therebetween and frictionally stop the tape. It will be apparent that only one pair of opposing braking surfaces on the upper support member 11 and the brake :shoe 26 is sufficient to carry out the purposes of this invention, but it is preferred to use two pairs of opposing surfaces as shown.
  • the bands 14, 16 separate and move out of contact with the tape 12 and it becomes free running.
  • the shoulders 58 of the shoe 26 define a groove 56 to form a guideway for the band 16.
  • each plunger assembly is supported in a casing 70 and comprises a plunger 66, a spring 72 coiled around the plunger, and a spring seat 68 through which the lower end of the plunger 66 extends.
  • the seats 68 are threaded into their respective casings 70 so as to be able to vary the spring compression and thereby adjust the pressure exerted on the tape 12 by the shoulders 58 of the brake shoe.
  • a pair of metallic balls 73 serves as flexible ball joint suspensions between the upper ends of the plungers and the bottom side of the brake shoe.
  • the drive shoe 24, as shown in FIG. 5, is aligned with the brake shoe 28 so that, when the electromagnet 36 is energized, the drive shoe 24 transmits its downward movement through the endless bands 14, 16 and the tape 12 to the brake shoe. That is to say, when electromagnet 36 is activated to drive the tape, the drive shoe, as it is pressed downwardly, forces the brake shoe downward a distance sufficient to bottom the upper end portions 64 of the plungers 66 against the yokes 7 1 of the casings 70 rigidly mounted to the lower support member 13.
  • the bottomed upper end portions of the plungers provide a solid, unyielding support to the brake shoe and, in turn, to the drive shoe to insure a tight gripping engagement by the bands 1.4, 16 with the tape 12.
  • the upper end portions 64 of the 6 plungers 66 are made of a magnetic material and serve as armatures for the electromagnets. Since these upper end portions or armatures normally are biased upwardly away from the electromagnets 62, it is necessary to first bring the armatures into close proximity with the electromagnets before they can be retained, because the generated magnetic field is not sufficient to overcome the upward bias of the springs 72. Accordingly, the electromagnet 36 of the clutch means is energized to press the brake shoe 28 and, in turn, the upper end portions 64 or armatures downwardly into proximity with the electromagnets 62. When the electromagnet 36 is de-energized the now energized electromagnets 62 retain the brake shoe in this retracted position, and thereby keep the passageway open for receiving the tape 12 to be inserted therein.
  • FIGS. 4 and 5 The operation of the document feeding device is best illustrated in FIGS. 4 and 5. As shown in FIG. 4, the document feeding device is best illustrated in FIG. 4.
  • electromagnet 36 of the clutch means is de-energized and both of the braking surfaces 57, 59 engage the tape 12.
  • the drive shoe 24 is in its normal at rest position and, while the endless bands 14, 16 are moving, no pressure is exerted on the band 14 so that both bands are out of contact with the tape 12.
  • the electromagnet 36 is energized and, as shown ⁇ in cross section in FIG. 5, draws the armature 48 in contact with its pole faces thereby causing the plungers 44 to force the drive shoe downwardly into engagement with the endless band 14.
  • the band 14, in turn, i-s moved towards the endless band 16 to pinch the tape 12 between the bands.
  • the plungers 44 spring bias the armature 40 away from the electromagnet 36 and return the drive shoe 24 to an at rest position on the endless band 14.
  • the bands 14, 16 separate from the tape and the brake shoe 28, which is free to move upwardly, presses the tape 12 through its shoulders 58 against the upper support member 11. A sufficient frictional force is applied by their braking surfaces 57, 59 to rapidly stop the tape which now is only free running.
  • each of the endless bands 14, 16 in accordance with another aspect of this invention is provided with at least one tensioning means.
  • the pulley 15 includes a ball bearing retained within the pulley by an expansion ring 77.
  • Adjacent the pulley 15 is a movable member or disc 78 with a hub 79 integral therewith and having a pair of fixed studs 80, 82 projecting laterally from its face 83.
  • the disc 78 is rigidly mounted with the ball bearing 75 by any suitable means such as keying the hub 79 to the inner race of the bearing 75 or by press fitting the hub within the inner race.
  • the extension 17 of one of the support members is formed with an aperture 81 for receiving the stud 80 and with a slot 86 for receiving the stud 82.
  • This movement of the disc 78 transmit a radially outward directed force through the hub 79 and bearing 75 against the pulley and causes a corresponding movement of the pulley against the endless band associated with the pulley to place the band in a taut condition.
  • the studs 8f), 82 are positioned 180 apart to permit the optimum force against the pulley 15 with a minimum movement by the sliding stud 82.
  • screws 85 may be threaded into the extension 17 with their ends abutting the face 83 of the disc 78 to enable adjustment of the pulleys substantially parallel relationship with the exten- 17 to bring the groove 19 of the pulley into complete Contact with the band.
  • the stud forcing means takes the form of an expansion clip spring of C washer 88 having one end 89 anchored to a stud 90 xed on extension 17.
  • the washer is compressed thereby closing the C configuration.
  • the compressed C washer 88 attempts to return to its normal configuration and, in doing so, slides the stud 82 in the direction of arrow 82a. This movement pivots the movable disc 78 about the stud 80, also attached to the clip spring or C washer 88 by its portion 92, and transmits the tension of the spring to the endless band in the manner previously described.
  • each tensioning means is preferably arranged with its associated endless band so that the disc 78 is pivoted by the clip spring 88 in the same direction as the direction of rotation of the endless band, As shown in FIG.
  • a shaft for example shaft 20, is rotated in the direction indicated by the arrow 20a and causes the pulley 15, and, in turn, its associated band to rotate in the same direction as the direction 82a of the sliding stud so as to complement the pressure exerted by the clip spring 88.
  • the tensioning means for the other endless band traveling in the opposite direction is constructed substantially the same as the one shown in FIG. 6 except that the slot 86 and the aperture 81 formed in the extension 17 are reversed. This change is necessitated to allow the opposite direction of rotation of the endless band to complement the spring pressure of the sliding stud 82 associated therewith.
  • the disc 78 is able to respond to this additional force and pivots in opposition to the clip spring or C washer 88 to reduce the force exerted by the tensioning means on its associated band.
  • the advantages accruing from this cooperation or coaction are threefold. First, it permits the band to be brought into feed gripping engagement with the tape more easily than with an unyielding type tensioning means. Second, it prevents the possibility of the bands being overstressed when the clutch means is activated. Finally, it provides a resultant force which is sufficient to maintain the endless bands in a taut condition while feeding the tape.
  • the document feeding device 10 has been described as acting directly upon the documents for causing feeding thereof. If desired, the feeding device may operate indirectly on a plurality of stacked documents for feeding them individually out of the stack.
  • a hopper 93 is filled with a stack of documents, such as punch cards 94.
  • Triangularly mounted on a triad of rollers is a movable endless belt 96 which has a portion of its path adjacent one end of the stack of punched cards and which preferably has a high friction surface.
  • the endless bands 14, 16 (shown schematically) of the feeding device 10 are disposed on opposite sides of the belt 96 between two of the pulleys 95.
  • the pulley 95 adjacent the hopper may be a drum perforated about its periphery and suitably connected to a vacuum source in ordei to attract the endmost card against the belt for improved frictional engagement therewith.
  • the belt 96 is perforated in this instance or made of a loosely woven material through which air may be drawn.
  • the clutch means of the device 10 is activated. This causes the drive shoe 24 (FIG. 3) to force the endless band 14 towards the endless band 16, so that both hands are brought into gripping engagement with the belt, and, to move the brake shoe 28 (FIG. 3) to an inactive position.
  • the bands 14, 16 transfer their motion to the endless belt 96 and drive the belt continuously in the direction indicated by the arrows so that in passing the hopper 93 it peels one card after the other from the stack.
  • the feeding device 10 serves as an incrementor.
  • the feeding device 10 stops the movement of the belt 96 after a card is fed from the hopper 93 and, after a slight delay, restarts the movement of the belt for feeding the next card.
  • the cycle of operation of the feeding device 10 as an incrementor is as follows.
  • the clutch means is activated to transmit the motion of the bands 14, 16 to the belt 96.
  • the clutch means is deactivated. This releases the pressure on the drive shoe 24 and causes the brake shoe 28 to apply its braking action to the belt and arrest its movement.
  • the clutch means is again activated after a slight time delay to allow for this spacing. The cycle then is continued for feeding the remaining cards in the stack out Of the hopper.
  • a document feeding device wherein a pair of endless bands are mounted on rst and second support members disposed adjacent each other so that the bands 9 form, at their opposed, near adjoining surfaces .a narrow passageway capable of receiving a document and each is driven in a common direction along the passageway so as to feed the document in that direction, said document feeding device comprising:
  • a document feeding device comprising:
  • first and second members supporting a pair of rotatable pulleys .and mounted in parallel relationshipy to each other;
  • a clutch means disposed adjacent the inner surface of the endless band associated with said first support member and having a shoe movably mounted to urge said one band toward the other band, so that both of said bands engage the document for causing the movement thereof;
  • a brake means disposed adjacent the inner surface of the endless band associated with said second support member and having a shoe movably mounted to urge the document into engagement with said first support member for stopping its movement without arresting the motion of either of said moving bands.
  • clutch means disposed along said passageway adjacent the inner surf-ace of said rst band and operable for moving the first band toward said second band so that both of said bands are brought into feeding engagement with the document;
  • brake means disposed along said passageway adjacent the inner surface of said second band and operable for decelerating and stopping the document, said brake means being responsive to the band movement of said clutch means for releasing its braking action on the document when the clutch means is operating to feed the document.
  • first and second endless bands are mounted adjacent each other -to form a narrow passageway capable of receiving the document and are driven in a common direction along the passaway, the combination of:
  • a clutch means having a movable drive shoe disposed along said passageway adjacent the inner surface of said first band and capable of urging the first band toward said second band so that both of said bands are in feeding engagement with the document;
  • a brake means having a movable shoe disposed along said passageway adjacent the inner surface of said second band and formed with at least one portion extending beyond the outer surface of the second band for applying a braking force to the document 10 when another portion is in close proximity with the inner surface of the band;
  • control means for operating said clutch means so that, when the clutch means is operated, said drive shoe urges said first band into feeding engagement with the doclument, rendering said brake shoe ineffective, and, when the clutch means is inoperative, the brake shoe applies a braking action to the document.
  • control means comprises electromagnetic means ⁇ for operating said clutch means.
  • a document feeding device comprising:
  • actuatable clutch means disposed adjacent the inner surface of one of said inner bands and having a shoe slidably mounted to move said one band toward the other band, so that both -of said bands engage the document for causing movement thereof;
  • ⁇ a pair of band tensioning means one associated with each of said endless bands and both operable for exerting an outwardly directed force against their respective bands so as to maintain the near adjoining surfaces of the bands away from the document when the clutch means is inactive.
  • a band tensioning apparatus comprising:
  • a document feeding device wherein a pair of endless bands are mounted on support members disposed adjacent each other so that the bands form, at their opposed, near adjoining surfaces, a narrow passageway capable of receiving a document, with each band disposed about a pair of pulleys and driven by one of the pulleys in a common direction along the passageway so as to feed the document in that direction, said document feeding device including, for each of said bands, a band tensioning means comprising:
  • a fixed member forming a portion of said support member associated with the endless band and having an aperture and slot therein and an anchor stud integral therewith;
  • a movable member having a pair of studs thereon and disposed Within one of the pulleys associated with the band, one of said pair of studs being pivotally mounted in said .aperture and extending through said fixed member, the other of said pair of studs extending through said slot;
  • a resilient element having one end attached to said anchor stud, a portion intermediate the ends of said spring attached to said pivotally mounted stud and the other end of the spring attached to said other stud, said spring forcing said other stud to move outwardly to pivot said movable member about said pivot stud relative to said fixed member thereby causing a radially, outwardly directed force against said pulley to place the band in a taut condition.
  • a document feeding device wherein a pair ⁇ of document feeding devices of claim 1 are mounted in series relationship to each other and are oppositely driven; with the clutch means of one device being inactive when its brake means is in its normal braking position to stop the document, the clutch means of the other device being in feeding engagement with the document to feed said document in a given direction when the 'brake means of the other device is in inactive position to thereby feed documents in both forward and reverse directions and to feed the documents from one to the other direction without time delay.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
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US325991A 1963-11-26 1963-11-26 Document feeding device having clutch and brake means Expired - Lifetime US3227344A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US325991A US3227344A (en) 1963-11-26 1963-11-26 Document feeding device having clutch and brake means
GB43038/64A GB1019488A (en) 1963-11-26 1964-10-22 A sheet material feeding device
DEJ26912A DE1244660B (de) 1963-11-26 1964-11-18 Vorrichtung fuer den Transport von Blaettern, Streifen u. dgl.
FR996192A FR1417468A (fr) 1963-11-26 1964-11-25 Dispositif d'alimentation de cartes

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US325991A US3227344A (en) 1963-11-26 1963-11-26 Document feeding device having clutch and brake means

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US3227344A true US3227344A (en) 1966-01-04

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DE (1) DE1244660B (de)
GB (1) GB1019488A (de)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3318502A (en) * 1964-07-17 1967-05-09 Vyzk Ustav Matemat Stroju Roller drive for non-magnetic recording tape magnetically actuated
US3347435A (en) * 1965-08-18 1967-10-17 Vyzk Ustav Matemat Stroju Brake or drive unit for recording tape
US3469545A (en) * 1967-06-14 1969-09-30 Union Special Machine Co Conveyor sewing unit with shiftable top feed belt and work loading arrangement
US3687380A (en) * 1970-06-25 1972-08-29 Gulf General Atomic Inc Prestressing apparatus
US3880059A (en) * 1972-04-05 1975-04-29 Windmoeller & Hoelscher Apparatus for piling flat workpieces
US4149664A (en) * 1977-11-11 1979-04-17 United States Steel Corporation Stop means for use in a rod guiding apparatus
US4468676A (en) * 1981-07-17 1984-08-28 Fuji Xerox Co., Ltd. Transfer type heat-sensitive printer
US4697944A (en) * 1986-11-06 1987-10-06 Ncr Corporation Sheet feeding apparatus with cooperating endless belts
US4884387A (en) * 1988-06-24 1989-12-05 Hayssen Manufacturing Company Vertical form-fill-seal method and apparatus
US4890140A (en) * 1987-04-03 1989-12-26 Asahi Kogaku Kogyo K.K. Image fixing apparatus
US4988854A (en) * 1987-11-26 1991-01-29 Omron Tateisi Electronics Co. Temperature compensating card conveyor
US5238165A (en) * 1991-06-01 1993-08-24 Friedrich Theysohn Gmbh Extrudate hauler with upper and lower endless tracks with yaw adjustment
FR3114310A1 (fr) * 2020-09-24 2022-03-25 Compagnie Generale Des Etablissements Michelin Convoyeur pourvu de deux bandes s’attirant mutuellement par aimantation pour le transport de nappes amagnetiques, et application d’un tel convoyeur a la fabrication de bandages de roues

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Publication number Priority date Publication date Assignee Title
IT1188295B (it) * 1986-01-22 1988-01-07 Cerutti Spa Off Mec Mezzi per alimentare a tensione costante una pluralita' di bande di carta
JP6102487B2 (ja) * 2013-05-10 2017-03-29 沖電気工業株式会社 媒体収納装置及び媒体取引装置
CN113492110B (zh) * 2021-07-11 2022-11-25 宏洋电机(威海)有限公司 一种数控机床用机械夹具及数控机床

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US3078983A (en) * 1959-06-12 1963-02-26 Young Brothers Company Automatic uniform tension expansion take-up for oven conveyor

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US2947406A (en) * 1958-12-31 1960-08-02 Pitney Bowes Inc Letter inverter
FR1295879A (fr) * 1961-07-25 1962-06-08 Telefunken Gmbh Dispositif pour aligner des objets plats contre une surface d'application

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3318502A (en) * 1964-07-17 1967-05-09 Vyzk Ustav Matemat Stroju Roller drive for non-magnetic recording tape magnetically actuated
US3347435A (en) * 1965-08-18 1967-10-17 Vyzk Ustav Matemat Stroju Brake or drive unit for recording tape
US3469545A (en) * 1967-06-14 1969-09-30 Union Special Machine Co Conveyor sewing unit with shiftable top feed belt and work loading arrangement
US3687380A (en) * 1970-06-25 1972-08-29 Gulf General Atomic Inc Prestressing apparatus
US3880059A (en) * 1972-04-05 1975-04-29 Windmoeller & Hoelscher Apparatus for piling flat workpieces
US4149664A (en) * 1977-11-11 1979-04-17 United States Steel Corporation Stop means for use in a rod guiding apparatus
US4468676A (en) * 1981-07-17 1984-08-28 Fuji Xerox Co., Ltd. Transfer type heat-sensitive printer
US4697944A (en) * 1986-11-06 1987-10-06 Ncr Corporation Sheet feeding apparatus with cooperating endless belts
US4890140A (en) * 1987-04-03 1989-12-26 Asahi Kogaku Kogyo K.K. Image fixing apparatus
US4988854A (en) * 1987-11-26 1991-01-29 Omron Tateisi Electronics Co. Temperature compensating card conveyor
US4884387A (en) * 1988-06-24 1989-12-05 Hayssen Manufacturing Company Vertical form-fill-seal method and apparatus
US5238165A (en) * 1991-06-01 1993-08-24 Friedrich Theysohn Gmbh Extrudate hauler with upper and lower endless tracks with yaw adjustment
FR3114310A1 (fr) * 2020-09-24 2022-03-25 Compagnie Generale Des Etablissements Michelin Convoyeur pourvu de deux bandes s’attirant mutuellement par aimantation pour le transport de nappes amagnetiques, et application d’un tel convoyeur a la fabrication de bandages de roues

Also Published As

Publication number Publication date
DE1244660B (de) 1967-07-13
GB1019488A (en) 1966-02-09

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