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US3618933A - Card feed device - Google Patents

Card feed device Download PDF

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Publication number
US3618933A
US3618933A US875298A US3618933DA US3618933A US 3618933 A US3618933 A US 3618933A US 875298 A US875298 A US 875298A US 3618933D A US3618933D A US 3618933DA US 3618933 A US3618933 A US 3618933A
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Prior art keywords
card
stack
roller
foremost
force
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Expired - Lifetime
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US875298A
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Edwin O Roggenstein
Earl Olsen
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Unisys Corp
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Burroughs Corp
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Assigned to BURROUGHS CORPORATION reassignment BURROUGHS CORPORATION MERGER (SEE DOCUMENT FOR DETAILS). DELAWARE EFFECTIVE MAY 30, 1982. Assignors: BURROUGHS CORPORATION A CORP OF MI (MERGED INTO), BURROUGHS DELAWARE INCORPORATED A DE CORP. (CHANGED TO)
Anticipated expiration legal-status Critical
Assigned to UNISYS CORPORATION reassignment UNISYS CORPORATION MERGER (SEE DOCUMENT FOR DETAILS). Assignors: BURROUGHS CORPORATION
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    • 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

Definitions

  • Uren ABSTRACT A mechanism for feeding cards singly from a stack of cards where the feeding is initiated by intermittent forces applied to the stack, each force operating to press the stack against a driven feed roller and to push a foremost card of the stack into a dispensing slot, the application of each force rendering the feed roller effective to eject the foremost card.
  • the invention is related to a class of mechanisms generally termed document or card feeders.
  • a common function of the class is the sequential removal of single cards from a stack of cards.
  • the invention utilizes a combination of a reciprocal member or hammer, a driven roller, and stack-supporting means in which a reciprocal force upon the stack by the hammer causes cards to be singly fed at the reciprocating rate of the hammer.
  • a single force against the stack by the hammer presses the stack against the roller and toward a slot formed by an edge of a stack-retaining plate and the roller.
  • the invention also provides a displaceable roller which is displaced by the force of the hammer to effectively widen the slot and facilitate the passage of a card.
  • FIG. 1 is a perspective view of a device for feeding cards singly from a stack of cards
  • FIG. 2 is a fragmentary plan view of the device of FIG. 1;
  • FIG. 3 is an enlarged sectional view, taken along the line --3 of FIG. 2;
  • FIG. 4 is a sectional view similar to FIG. 3 illustrating the feeding of a card
  • FIG. 5 is a sectional view similar to FIG. 3 of a modification
  • FIG. 6 is a view similar to FIG. 5 illustrating the feeding of a card
  • FIG. 7 is a sectional view similar to FIG. 3 showing another modification.
  • FIG. 8 is a view similar to FIG. 7 illustrating the. feeding of a card.
  • the device includes a card stack holder which, as viewed in FIG. 1, comprises a horizontal retainer plate 10, a vertical card stack backing plate 12 and a pressure plate 14.
  • a stack of cards 16 are supported on edge on the plate and are urged toward the backing plate 12 by a biasing element, such as a weight 17 connected by a cord 18 over a pulley 19 to the pressure plate 14.
  • the plate 14 is positioned above the plate 10 to bear against an upper portion of the stack 16 so as to hold the stack in the position shown.
  • a driven card feed roller 20 is mounted on the other side of the backing plate 12 from the retainer plate 10, the roller extending horizontally across the width of the card stack.
  • the roller 20 is afiixed onto a drive shaft 22 which may be coupled to a suitable drive means (not shown) for rotating the roller at a uniform angular velocity in a clockwise direction, as seen in FIGS. 3 and 4.
  • a clearance opening 24 through which the periphery of the roller 20 projects to engage the foremost card, as at 26, of the stack.
  • an edge 28 of the plate 10 Disposed toward the periphery of the roller 20 is an edge 28 of the plate 10 to define a card-dispensing passage or slot 30 with the roller periphery.
  • the upper surface of the, plate 10 is offset from the roller axis anteriorly thereof with respect to the direction of card feed, or is below the axis of the roller 20, as viewed in FIGS. 3 and 4.
  • a force-transmitting member or hammer 32 is provided to strike the card stack to render the roller 20 effective to feed the foremost card from the stack.
  • the roller 20 is preferably made of a displaceable resilient material (low durometer), such as rubber, so as to yield under the impact force of the reciprocal member or hammer 32.
  • the width of the slot 30 is normally slightly less than and/or equal to the thickness of a card and the yielding of the roller 20 under the hammer impact force results in the widening of the slot.
  • the impact force moves the leading edge of the foremost card into the slot whereupon the roller is effective to eject the card through the slot.
  • the hammer 32 is disposed on the other side of the stack from the roller and is slidably mounted for reciprocation on the upper surface of the retainer plate 10.
  • the hammer 32 is,intermittently actuated by a power element, preferably a pneumatic power element.
  • a power element preferably a pneumatic power element.
  • Such devices are well known and in general comprise, a cylinder 34 to contain a piston for connection by a rod 38 to the hammer 32.
  • the use of a pneumatic power element is desirable for delivering a predetermined force to a diminishing stack of cards.
  • the end or stack-striking face 40 of the hammer 32 is sloped from the upper surface of the plate 10 upwardly away from the roller 20.
  • Such a sloped face 40 has the effect of bending lower margins of the stacked cards such that the foremost card is pressed against the roller 20 with its lower edge free of the plate 10 whereby to enable the roller to feed the card.
  • a pair of driven feed rollers 42 may be provided below the slot 30 to receive and transport cards away from the card stack feeder.
  • the card-feeding device is similar to the above described preferred device and therefore like parts have been designated by like reference characters to avoid unnecessary repetitious description.
  • the modification differs from the preferred form in the provision of a nonyieldable roller 44 and in the provision of a card-dispensing slot of a width greater than the thickness of a card and less than the sum of the thicknesses of two cards.
  • the roller 40 may be made of any suitable nonyieldable material, such as hard rubber, metal or a plastic material.
  • the pressure applied to the stack by the hammer presses the foremost card against the roller 44 and deflects the foremost card into the slot 30 whereby the roller is effective to eject the card.
  • FIGS. 7 and 8 differs from the preferred card-feeding device solely in the location of the retainer plate 46.
  • the upper surface of the retainer plate is in a horizontal plane posterior to the axis of the roller with respect to the direction of card feed.
  • the width of the slot is normally less than and/or equal to the thickness of a card.
  • the roller yields to increase the width of the slot by and upon the application of pressure against the stack by the hammer which also bends the foremost card clear of the edge of the retainer plate.
  • a device for feeding cards singly and edgewise from a stack of cards comprising a card stack backing member adapted to engage the broadside of a foremost card of a stack, a card stack retainer plate transversely and laterally disposed to said backing member and anteriorly displaced from said backing member with respect to the direction of card feed, said card stack retainer plate having a broadside thereof adapted to abut the leading edges of the cards with respect to said direction of card feed and having an edge disposed toward and in spaced apart relation to said backing member, a card feed roller having its periphery extending along said edge in spaced apart relationship therewith to define a card ejection slot with said edge, the periphery of said roller being continuously effective to frictionally impel the foremost card from the stack upon the application of a predetennined amount of pres sure against said roller by the stack and the displacement of the leading edge of the foremost card clear of said retainer plate, a force-transmitting member adaptable to apply pressure to the rear of the stack toward said card feed roller,
  • roller is composed of a resilient material that elastically deforms upon the application of pressure thereto by the foremost card to effectively widen said card ejection slot.
  • a device as defined by claim 1 wherein said means to reciprocate the force-transmitting member is characterized by a pneumatically operated piston coupled by a connecting member to said force transmitting member.
  • a device as defined by claim 1 wherein the broadside of said retainer plate is in a plane intersecting said roller and offset from the axis of rotation of said roller anteriorly thereof with respect to the direction of card feed, said plane being closer to said axis than to a plane tangent to the periphery of said roller and parallel with said axis so that the foremost card nonnally abuts said backing member, the leading edge of the foremost card being retained on said card stack retainer in close proximity to the card ejection slot so that pressure applied to the rear of the stack by said force-transmitting member is effective to bend the foremost card toward the contour of the periphery of the roller and thus displacing the leading edge into the slot there to be frictionally impelled free of the stack by said card feed roller.

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  • General Physics & Mathematics (AREA)
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Abstract

A mechanism for feeding cards singly from a stack of cards where the feeding is initiated by intermittent forces applied to the stack, each force operating to press the stack against a driven feed roller and to push a foremost card of the stack into a dispensing slot, the application of each force rendering the feed roller effective to eject the foremost card.

Description

United States Patent Edwin 0. Roggenstein Birmingham;
Earl Olsen, Detroit, both of Mich. 875,298
Nov. 10, 1969 Nov. 9, 197 l Burroughs Corporation Detroit, Mich.
inventors Appl. No. Filed Patented Assignee CARD FEED DEVICE 5 Claims, 8 Drawing Figs.
U.S. C1 271/39 Int. Cl B6511 1/08 Field of Search 271/36, 37,
39, 8 A, 26 E, 30 A, 62 B, 22, 28; 221/230 [56] References Cited UNITED STATES PATENTS 3,406,627 10/1968 Becker 271/41 X 2,080,968 5/1937 Kreli 271/39 2,887,316 5/1959 Tobey 271/36 Primary Examiner-.loseph Wegbreit Assistant Examiner-Bruce H. Stoner, .Ir. Anorqeys- Kenneth L. Miller and Edwin W. Uren ABSTRACT: A mechanism for feeding cards singly from a stack of cards where the feeding is initiated by intermittent forces applied to the stack, each force operating to press the stack against a driven feed roller and to push a foremost card of the stack into a dispensing slot, the application of each force rendering the feed roller effective to eject the foremost card.
INVENTOILS ATTORNEY PATENTEDNUV 9 IHYI SHEET 1 (IF 2 CARD FEED DEVICE SUMMARY OF THE INVENTION The invention is related to a class of mechanisms generally termed document or card feeders. A common function of the class is the sequential removal of single cards from a stack of cards. In order to perform this function, the invention utilizes a combination of a reciprocal member or hammer, a driven roller, and stack-supporting means in which a reciprocal force upon the stack by the hammer causes cards to be singly fed at the reciprocating rate of the hammer. A single force against the stack by the hammer presses the stack against the roller and toward a slot formed by an edge of a stack-retaining plate and the roller. Pressed against the roller by the applied force, the card of the stack abutting the roller, or foremost card, bends to the contour of the roller, thereby sliding over the edge of the stack retainer plate and into the slot to be carried away by the roller. The invention also provides a displaceable roller which is displaced by the force of the hammer to effectively widen the slot and facilitate the passage of a card.
IN THE DRAWINGS FIG. 1 is a perspective view of a device for feeding cards singly from a stack of cards;
FIG. 2 is a fragmentary plan view of the device of FIG. 1;
FIG. 3 is an enlarged sectional view, taken along the line --3 of FIG. 2;
FIG. 4 is a sectional view similar to FIG. 3 illustrating the feeding of a card;
FIG. 5 is a sectional view similar to FIG. 3 of a modification;
FIG. 6 is a view similar to FIG. 5 illustrating the feeding of a card;
FIG. 7 is a sectional view similar to FIG. 3 showing another modification; and
FIG. 8 is a view similar to FIG. 7 illustrating the. feeding of a card.
Referring to the drawings and first to FIGS. 1 to 4, the device includes a card stack holder which, as viewed in FIG. 1, comprises a horizontal retainer plate 10, a vertical card stack backing plate 12 and a pressure plate 14. A stack of cards 16 are supported on edge on the plate and are urged toward the backing plate 12 by a biasing element, such as a weight 17 connected by a cord 18 over a pulley 19 to the pressure plate 14. The plate 14 is positioned above the plate 10 to bear against an upper portion of the stack 16 so as to hold the stack in the position shown.
A driven card feed roller 20 is mounted on the other side of the backing plate 12 from the retainer plate 10, the roller extending horizontally across the width of the card stack. The roller 20 is afiixed onto a drive shaft 22 which may be coupled to a suitable drive means (not shown) for rotating the roller at a uniform angular velocity in a clockwise direction, as seen in FIGS. 3 and 4. In the backing plate 12 there is a clearance opening 24 through which the periphery of the roller 20 projects to engage the foremost card, as at 26, of the stack. Disposed toward the periphery of the roller 20 is an edge 28 of the plate 10 to define a card-dispensing passage or slot 30 with the roller periphery. Preferably, the upper surface of the, plate 10 is offset from the roller axis anteriorly thereof with respect to the direction of card feed, or is below the axis of the roller 20, as viewed in FIGS. 3 and 4.
In accordance with the invention, a force-transmitting member or hammer 32 is provided to strike the card stack to render the roller 20 effective to feed the foremost card from the stack. To this end, the roller 20 is preferably made of a displaceable resilient material (low durometer), such as rubber, so as to yield under the impact force of the reciprocal member or hammer 32. The width of the slot 30 is normally slightly less than and/or equal to the thickness of a card and the yielding of the roller 20 under the hammer impact force results in the widening of the slot. At the same time, the impact force moves the leading edge of the foremost card into the slot whereupon the roller is effective to eject the card through the slot.
As shown, the hammer 32 is disposed on the other side of the stack from the roller and is slidably mounted for reciprocation on the upper surface of the retainer plate 10. The hammer 32 is,intermittently actuated by a power element, preferably a pneumatic power element. Such devices are well known and in general comprise, a cylinder 34 to contain a piston for connection by a rod 38 to the hammer 32. The use of a pneumatic power element is desirable for delivering a predetermined force to a diminishing stack of cards.
The end or stack-striking face 40 of the hammer 32 is sloped from the upper surface of the plate 10 upwardly away from the roller 20. Such a sloped face 40 has the effect of bending lower margins of the stacked cards such that the foremost card is pressed against the roller 20 with its lower edge free of the plate 10 whereby to enable the roller to feed the card.
Below the slot 30 a pair of driven feed rollers 42 may be provided to receive and transport cards away from the card stack feeder.
Referring now to the modification of FIGS. 5 and 6, the card-feeding device is similar to the above described preferred device and therefore like parts have been designated by like reference characters to avoid unnecessary repetitious description. The modification differs from the preferred form in the provision of a nonyieldable roller 44 and in the provision of a card-dispensing slot of a width greater than the thickness of a card and less than the sum of the thicknesses of two cards. The roller 40 may be made of any suitable nonyieldable material, such as hard rubber, metal or a plastic material. In operation, the pressure applied to the stack by the hammer presses the foremost card against the roller 44 and deflects the foremost card into the slot 30 whereby the roller is effective to eject the card.
The modification of FIGS. 7 and 8 differs from the preferred card-feeding device solely in the location of the retainer plate 46. As shown in FIGS. 7 and 8, the upper surface of the retainer plate is in a horizontal plane posterior to the axis of the roller with respect to the direction of card feed. In this case, the width of the slot is normally less than and/or equal to the thickness of a card. The roller yields to increase the width of the slot by and upon the application of pressure against the stack by the hammer which also bends the foremost card clear of the edge of the retainer plate.
What is claimed is:
l. A device for feeding cards singly and edgewise from a stack of cards comprising a card stack backing member adapted to engage the broadside of a foremost card of a stack, a card stack retainer plate transversely and laterally disposed to said backing member and anteriorly displaced from said backing member with respect to the direction of card feed, said card stack retainer plate having a broadside thereof adapted to abut the leading edges of the cards with respect to said direction of card feed and having an edge disposed toward and in spaced apart relation to said backing member, a card feed roller having its periphery extending along said edge in spaced apart relationship therewith to define a card ejection slot with said edge, the periphery of said roller being continuously effective to frictionally impel the foremost card from the stack upon the application of a predetennined amount of pres sure against said roller by the stack and the displacement of the leading edge of the foremost card clear of said retainer plate, a force-transmitting member adaptable to apply pressure to the rear of the stack toward said card feed roller, and means to reciprocate said force-transmitting member cyclically against the rear of the stack to apply the predetermined amount of pressure thereto, and to displace the leading edge of the foremost card into the card ejection slot, whereby the cyclic rate of said force-transmitting member establishes a corresponding rate of card feed.
2. A device as defined by claim 1 wherein the width of said slot is less than the thickness of a card and said roller is displaceable by said force-transmitting member to widen said slot to receive a card.
3. A device as defined by claim 2 wherein said roller is composed of a resilient material that elastically deforms upon the application of pressure thereto by the foremost card to effectively widen said card ejection slot.
4. A device as defined by claim 1 wherein said means to reciprocate the force-transmitting member is characterized by a pneumatically operated piston coupled by a connecting member to said force transmitting member.
5. A device as defined by claim 1 wherein the broadside of said retainer plate is in a plane intersecting said roller and offset from the axis of rotation of said roller anteriorly thereof with respect to the direction of card feed, said plane being closer to said axis than to a plane tangent to the periphery of said roller and parallel with said axis so that the foremost card nonnally abuts said backing member, the leading edge of the foremost card being retained on said card stack retainer in close proximity to the card ejection slot so that pressure applied to the rear of the stack by said force-transmitting member is effective to bend the foremost card toward the contour of the periphery of the roller and thus displacing the leading edge into the slot there to be frictionally impelled free of the stack by said card feed roller.
9 I? I II II

Claims (5)

1. A device for feeding cards singly and edgewise from a stack of cards comprising a card stack backing member adapted to engage the broadside of a foremost card of a stack, a card stack retainer plate transversely and laterally disposed to said backing member and anteriorly displaced from said backing member with respect to the direction of card feed, said card stack retainer plate having a broadside thereof adapted to abut the leading edges of the cards with respect to said direction of card feed and having an edge disposed toward and in spaced apart relation to said backing member, a card feed roller havIng its periphery extending along said edge in spaced apart relationship therewith to define a card ejection slot with said edge, the periphery of said roller being continuously effective to frictionally impel the foremost card from the stack upon the application of a predetermined amount of pressure against said roller by the stack and the displacement of the leading edge of the foremost card clear of said retainer plate, a forcetransmitting member adaptable to apply pressure to the rear of the stack toward said card feed roller, and means to reciprocate said force-transmitting member cyclically against the rear of the stack to apply the predetermined amount of pressure thereto, and to displace the leading edge of the foremost card into the card ejection slot, whereby the cyclic rate of said force-transmitting member establishes a corresponding rate of card feed.
2. A device as defined by claim 1 wherein the width of said slot is less than the thickness of a card and said roller is displaceable by said force-transmitting member to widen said slot to receive a card.
3. A device as defined by claim 2 wherein said roller is composed of a resilient material that elastically deforms upon the application of pressure thereto by the foremost card to effectively widen said card ejection slot.
4. A device as defined by claim 1 wherein said means to reciprocate the force-transmitting member is characterized by a pneumatically operated piston coupled by a connecting member to said force transmitting member.
5. A device as defined by claim 1 wherein the broadside of said retainer plate is in a plane intersecting said roller and offset from the axis of rotation of said roller anteriorly thereof with respect to the direction of card feed, said plane being closer to said axis than to a plane tangent to the periphery of said roller and parallel with said axis so that the foremost card normally abuts said backing member, the leading edge of the foremost card being retained on said card stack retainer in close proximity to the card ejection slot so that pressure applied to the rear of the stack by said force-transmitting member is effective to bend the foremost card toward the contour of the periphery of the roller and thus displacing the leading edge into the slot there to be frictionally impelled free of the stack by said card feed roller.
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Cited By (49)

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US3753514A (en) * 1971-07-20 1973-08-21 P Naguet Apparatus for selectively dispensing articles stored in a plurality of containers
US3841623A (en) * 1972-02-28 1974-10-15 Procter & Gamble Sheet feeding and labeling apparatus
US3874652A (en) * 1972-05-08 1975-04-01 Decision Consultants Apparatus for feeding sheet material from the bottom of a stack
DE2433881A1 (en) * 1974-07-15 1976-02-05 Hoechst Ag PRESSURE DEVICE
US3966193A (en) * 1975-03-12 1976-06-29 Pitney-Bowes, Inc. Mail handling stacking and feeding apparatus
US4053152A (en) * 1975-10-16 1977-10-11 Rank Xerox, Ltd. Sheet feeding device
US4073373A (en) * 1976-03-26 1978-02-14 Crowley Norman R Laminate stacking apparatus and method
US5576823A (en) * 1994-09-01 1996-11-19 Mita Industrial Co., Ltd. Automatic document feeder having document separating mechanism
WO2010117446A1 (en) * 2009-04-07 2010-10-14 Newton Shuffler Llc Playing card shuffler
DE102009049515A1 (en) * 2009-10-15 2011-04-21 Giesecke & Devrient Gmbh Separator e.g. friction wheel separator, for separating bank notes, has separating element cooperating with restraining apparatuses to separate sheet material stacks from input parts during actuation of extraction device in two directions
US8967621B2 (en) 2009-04-07 2015-03-03 Bally Gaming, Inc. Card shuffling apparatuses and related methods
US9220971B2 (en) 2006-05-31 2015-12-29 Bally Gaming, Inc. Automatic system and methods for accurate card handling
US9220972B2 (en) 2001-09-28 2015-12-29 Bally Gaming, Inc. Multiple mode card shuffler and card reading device
US9259640B2 (en) 2007-06-06 2016-02-16 Bally Gaming, Inc. Apparatus, system, method, and computer-readable medium for casino card handling with multiple hand recall feature
US9266012B2 (en) 1998-04-15 2016-02-23 Bally Gaming, Inc. Methods of randomizing cards
US9266011B2 (en) 1997-03-13 2016-02-23 Bally Gaming, Inc. Card-handling devices and methods of using such devices
US9320964B2 (en) 2006-11-10 2016-04-26 Bally Gaming, Inc. System for billing usage of a card handling device
US9333415B2 (en) 2002-02-08 2016-05-10 Bally Gaming, Inc. Methods for handling playing cards with a card handling device
US9345952B2 (en) 2006-03-24 2016-05-24 Shuffle Master Gmbh & Co Kg Card handling apparatus
US9345951B2 (en) 2001-09-28 2016-05-24 Bally Gaming, Inc. Methods and apparatuses for an automatic card handling device and communication networks including same
US9370710B2 (en) 1998-04-15 2016-06-21 Bally Gaming, Inc. Methods for shuffling cards and rack assemblies for use in automatic card shufflers
US9378766B2 (en) 2012-09-28 2016-06-28 Bally Gaming, Inc. Card recognition system, card handling device, and method for tuning a card handling device
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US9731190B2 (en) 2011-07-29 2017-08-15 Bally Gaming, Inc. Method and apparatus for shuffling and handling cards
US9764221B2 (en) 2006-05-31 2017-09-19 Bally Gaming, Inc. Card-feeding device for a card-handling device including a pivotable arm
US9802114B2 (en) 2010-10-14 2017-10-31 Shuffle Master Gmbh & Co Kg Card handling systems, devices for use in card handling systems and related methods
US9849368B2 (en) 2012-07-27 2017-12-26 Bally Gaming, Inc. Batch card shuffling apparatuses including multi card storage compartments
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US10022617B2 (en) 2001-09-28 2018-07-17 Bally Gaming, Inc. Shuffler and method of shuffling cards
US10279245B2 (en) 2014-04-11 2019-05-07 Bally Gaming, Inc. Method and apparatus for handling cards
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US11338194B2 (en) 2018-09-28 2022-05-24 Sg Gaming, Inc. Automatic card shufflers and related methods of automatic jam recovery
US11376489B2 (en) 2018-09-14 2022-07-05 Sg Gaming, Inc. Card-handling devices and related methods, assemblies, and components
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Cited By (113)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3753514A (en) * 1971-07-20 1973-08-21 P Naguet Apparatus for selectively dispensing articles stored in a plurality of containers
US3841623A (en) * 1972-02-28 1974-10-15 Procter & Gamble Sheet feeding and labeling apparatus
US3874652A (en) * 1972-05-08 1975-04-01 Decision Consultants Apparatus for feeding sheet material from the bottom of a stack
DE2433881A1 (en) * 1974-07-15 1976-02-05 Hoechst Ag PRESSURE DEVICE
US3966193A (en) * 1975-03-12 1976-06-29 Pitney-Bowes, Inc. Mail handling stacking and feeding apparatus
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