SINGLE VEND NEWSPAPER VENDING MACHINE

Abstract: An engagement wheel (160) contacts a topmost paper (90) and forces it rearward and upwards on the stack (92). The topmost paper (90) is thus removed from underneath the newspaper thickness sensing bar (56) allowing it to fall downwards to contact the next highest paper (94) on the stack (92). The removed paper (90) is allowd to fall down chute (170) for removal.

Description: To the Honorable Commissioner of Patents and Trademarks Box PCT Washington, DC 20231 Your Petitioner, Thomas F. Masek, a citizen of the United States of America and resident of the State of Nebraska, whose residence and mailing address is 1566 Prairie Lane, Lincoln, Nebraska 68521, prays that Letters Patent Protection be granted to him for a SINGLE VEND NEWSPAPER VENDING MACHINE as set forth in the following specification: Cross-Reference to Related Application This application claims priority to the filing date of a related provisional application serial No. 60/139,400 filed June 16, 1999. Technical Field The present invention relates to newspaper vending machines and, more particularly, to a single-vend, single-fold newspaper vending machine having an elevator system mounted within the machine housing, the elevator system including a vertically movable inclined newspaper support plate and a rack and gear system for ratcheting the vertically movably plate upwards, the elevator system operative to elevate the next paper on the stack of papers to a particular position where that paper may be engaged by one or more pusher bars which engage the topmost paper moving it rearwardly, such that the topmost paper disengages from the stack and may fall forward into the newspaper vending chute, and further including a cam and ratchet door handle mechanism for restricting and controlling newspaper dispensing and access to the interior of the device. Background Art Most newspaper vending machines on the market today are coin actuated and the insertion of a coin into the machine enables the prospective purchaser to open a door to gain access to the entire supply of newspapers within the machine. While the majority of customers will at that time only remove a single newspaper, there are some individuals who will remove multiple newspapers from the machine either for resale or distribution to others. Obviously, there is a need for a newspaper vending machine which will prevent the theft of newspapers from the machine. Prior attempts have been made to overcome this problem by designing vending machines to dispense only a single copy of the newspaper in response to the insertion of coins in the machine. The scarcity of single copy newspaper vending machines is the best evidence of the failure of the prior art designs for single copy newspaper vending machines to address and solve the problems presented. Various attempts have been made in the prior art to make single vend newspaper vending machines. For example, Moore, U.S. Patent No. 4,139,120, discloses a newspaper vending machine which features an article holder which supports a newspaper stack. The reference also includes a pusher which frictionally or by piercing will engage each newspaper at the top of the stack and move it up and out of contact with the presser where upon the paper falls into a dispensing tray. The major disadvantage found in Moore, obviously, is that the intricate nature of the pulley system and movable nature of the pusher arrangement will almost certainly lead to numerous breakdowns and malfunctions while the invention is being used. Furthermore, there is no means by which the papers held within the machine can be seen to enable a potential purchaser to decide whether he or she should make that purchase. Another example of a newspaper vending machine found in the prior art is shown in Godley, Sr., U.S. Patent No. 4,312,461, which discloses a newspaper vending machine having a vertically moveable platform and a dispensing wedge. A drive shaft rotates to raise or lower the platform in response to rotation of an external crank thus vending the next newspaper on a stack. While Godley certainly presents a more simple and efficient system for vending newspapers than Moore, Godley includes several features which can be improved upon. For example, the dispensing mechanism for the newspaper involves the raising the stack of newspapers above a dispensing wedge thus allow the topmost newspaper to slide off of the top of the stack and thus be dispensed. However, some vended newspapers are of a narrow thickness and, therefore, as the platform is cranked upwards, the height added to the newspaper platform may cause two or more newspapers to fall from the top of the stack, thus resulting in the entire purpose for the invention being destroyed. Also, the crank handle as shown in Godley may be more prone to malfunctions due to the various connected elements within Godley. There is therefore a need for reliable and efficient single vend newspaper vending machine which will correctly vend even newspapers of narrow thickness. Various other inventions have been proposed in the prior art which attempt to address and resolve the problems inherent in single vend newspaper vending machines. Included among these are such devices as Gunzler, U.S. Patent No. 3,705,665, Wingate, U.S. Patent Nos. 4,448,328, and 4,506,800, and Hennessy, U.S. Patent No. 4,654,513. Each of these inventions, however, include inherent problems which do not fully address and solve the problem of producing an efficient and reliable single vend newspaper vending machine. There is therefore a need for an efficient and reliable single vend newspaper vending machine. Another problem encountered in connection with coin operated vending machines in the prior art is that it is often possible for the machine to "jam" with a paper stuck in the dispensing chute. This can result in the person using the machine to be able to reach into the machine to remove additional papers illegally. There is a need for a dispensing mechanism and chute which will prevent such unauthorized access. Therefore, an object of the present invention is to provide an improved single vend newspaper vending machine. Another object of the present invention is to provide a single vend newspaper vending machine which includes an elevator system for raising a stack of newspapers to a predetermined height for engagement by a pushing mechanism which will lift the topmost paper from underneath a paper restraining tongue and allow the top most paper to fall forward into a dispensing chute. Another object of the present invention is to provide a single vend newspaper vending machine which is capable of vending papers of varying thicknesses one at a time. Another object of the present invention is to provide a single vend newspaper vending machine which will prevent unauthorized entry into the interior of the machine through the dispensing slot or handle section. Finally, an object of the present invention is to provide a single vend newspaper vending machine which is safe, durable and efficient in use. Disclosure of Invention The present invention provides a single vend newspaper vending machine which includes a machine housing having outer walls and a newspaper elevator system mounted in the machine housing, the newspaper elevator system including a slide track mounted in the machine housing. The newspaper elevator system further includes a generally vertical fixed toothed rack mounted in the machine housing, an upright vertically movable toothed rack movably mounted in the machine housing and a newspaper support trolley movably mounted on the slide track. First and second clutch-equipped gear wheels are included, the first clutch-equipped gear wheel operative to engage the fixed toothed rack, the second clutch-equipped gear wheel operative to engage the vertically movable toothed rack. The slide track, the fixed toothed rack, the vertically movable toothed rack and the newspaper support trolley are mounted within the machine housing such that when the newspaper support trolley is movably mounted on the slide track, the first clutch-equipped gear wheel engages the fixed toothed rack and the second clutch-equipped gear wheel engages the vertically movable toothed rack. The first clutch-equipped gear wheel is operative to restrict downward movement of the newspaper support trolley when engaging the fixed toothed rack and the second clutch-equipped gear wheel is operative to permit downward movement of the vertically movable toothed rack. However, upwards movement of the vertically movable toothed rack causes the newspaper support trolley to be moved upwardly therewith. A newspaper thickness sensing device is movably mounted in the machine housing and is operative to determine the thickness of the topmost paper. A newspaper pusher device is mounted in the machine housing adjacent the newspaper stack and is operative to engage the topmost paper on the newspaper stack supported on the newspaper support trolley and slide the topmost newspaper off of the newspaper stack. The topmost newspaper then slides towards an access opening extending through the machine housing, the access opening operative to permit access to the topmost paper after the topmost paper has been slid off of the newspaper stack, and an access opening control device is mounted adjacent the access opening, the access opening control device including a door operative to cover the access opening and a door opening control system for releasably latching the door in a closed, access opening covering position. Finally, the present invention includes a newspaper pusher and movable toothed rack actuation system operatively connected to the newspaper pusher device and the movable toothed rack such that engagement of the actuation system first actuates the newspaper pusher device to remove the topmost paper from the newspaper stack, the actuation system operative to secondly raise the movable toothed rack a distance determined by the thickness of the topmost paper as determined by the newspaper thickness sensing device, thereby raising the newspaper support trolley such that the penultimate newspaper replaces the vended topmost newspaper in substantially the same position that the topmost newspaper was in prior to being vended. It is clear that the features of this invention combine to form an easily used and extremely durable and efficient single vend newspaper vending machine. The use of the clutch-equipped gear wheels renders the operation of the present invention extremely reliable, results in extremely accurate positioning of the newspaper trolley for improved vending, and is much quieter than the operation of those devices found in the prior art. Furthermore, the improvements in the present invention to the paper access opening and access control device therefor will prevent unauthorized access to the interior of the device. It is thus seen that the present invention provides a substantial improvement over the prior art. Brief Description of the Drawings Figure 1 is a perspective view of the single vend newspaper vending machine of the present invention; Figure 2 is a perspective view of the present invention showing the internal features thereof; Figure 3 is a side detail elevational view of the present invention showing the internal features thereof; Figure 4 is a detail view of the lifting mechanism of the elevator system; Figure 5 is a front elevational detail view of the lifting mechanism of the elevator system; Figure 6 is a partial detail side elevational view of the newspaper support trolley of the present invention; Figure 7 is a partial detail perspective view of the pusher mechanism of the present invention; Figures 8, 9 and 10 are partial detail side elevational views of the pusher mechanism of the present invention in operation; Figure 11 is a partial detail perspective view of the door operation mechanism of the present invention; Figure 12 is a partial detail perspective view of the upper section of the door operation mechanism of the present invention prior to insertion of coins; Figure 13 is a partial detail perspective view of the upper section of the door operation mechanism of the present invention after insertion of coins; Figure 14, 15 and 16 are partial detail perspective views of the overcentering device connected to the newspaper pusher mechanism showing the operation thereof; Figures 17, 18 and 19 are partial detail side elevational views of the metal actuating plate and functioning thereof; Figures 20 and 21 are partial detail side elevational views of the present invention showing the handle return prevention device in operation; and Figures 22 and 23 are perspective views of an alternative embodiment of the single vend newspaper vending machine of the present invention; Mode(s) For Carrying Out The Invention The single vend newspaper vending machine 10 of the present invention is shown best in Figures 1-13 as including a generally rectangular box machine housing 12 including a hinge mounted front door 14 shown best in Figure 2. It is preferred that machine housing 12 be constructed of a medium-thickness sheet metal formed in a manner commonly associated with formation of sheet metal boxes. The machine housing 12 is adapted to be mounted on a wall or the like by any appropriate wall mount device. The internal components of the single vend newspaper vending machine 10 may be divided into two general categories, those features mounted within the machine housing 12 and those features mounted on the front door 14. Of course, it is to be understood that for many of these features described below the mounting on the door 14 or in the machine housing 12 is not critical provided that the elements are mounted in such a way as to insure proper functioning and interfunctioning of the various elements. The following description shall begin with the features mounted within the machine housing 12. The machine housing features of the present invention are best shown in Figures 3- 6 and include a generally vertical slide track 16 which extends upwards and is connected to base 18. It is preferred that slide track 16 be formed of sheet metal and include a pair of vertical channels 20a and 20b, best shown in Figures 2 and 4. To increase the connection strength between slide track 16 and base 18, a pair of reinforcement plates 22a and 22b, are preferably connected to slide track 16 and base 18 as shown in Figure 2. Vertically movably mounted on slide track 16 is a newspaper support trolley 24 which, in the preferred embodiment, includes a rear trolley section 26 and a front newspaper support plate 32 which extends forwards and downwards from the upper part of rear trolley section 26 as shown in Figures 4 and 6. In the preferred embodiment, newspaper support plate 32 would be constructed of medium gauge sheet metal and would be inclined rearwardly at an angle between 30 degrees and 60 degrees although it is preferred that the actual angle of the newspaper support plate 32 be approximately 40 degrees. Mounted on the rear trolley section 26 adjacent to slide track 16 are a pair of track follower devices 30a and 30b which are preferably channel-engaging wheels designed to fit within and be in contact with the channels 20a and 20b on slide track 16. In this manner, newspaper support trolley 24 may travel in a generally vertical plane as directed by channels 20a and 20b and track follower devices 30a and 30b. Also, for biasing the newspaper support trolley 24 upwards to partially counteract the weight of the stack of newspapers supported thereon, a spring 34 is connected to an extension of rear plate 26 and extends upwards to connect to the slide track 16 at a point generally adjacent the top of slide track 16. The spring 34 assists the rack and gear mechanism which will be described in the following paragraph. Mounted on the rear plate 26 of newspaper support trolley 24 are first and second rack-engaging gear wheels 36 and 38, each of which are rotatably mounted on a pivoting support mount 40, which is best shown in Figure 4. The first gear wheel 36 is designed to engage a vertically mounted fixed toothed rack 50 which, in the preferred embodiment, is a toothed gear rack which extends approximately from the base of slide track 16 to top of side track 16 and is aligned colineariy with the direction of motion of the newspaper support trolley 24 up and down slide track 16. The fixed toothed rack 50 is preferably bolted to the slide track 16 at various points along the rack 50 to prevent movement of rack 50. The second gear wheel 38 is designed to engage a vertical moveable toothed rack 52, the vertically movable toothed rack 52 being free to move along a vertical line parallel with the line of movement of the newspaper support trolley 24 such that the second gear wheel 38 traveling on newspaper support trolley 24 engages toothed rack 52 at substantially all locations along toothed rack 52. As shown best in Figures 4 and 5, pivoting support mount 40 is pivoted into an engagement position such that the first and second gear wheels 36 and 38 engage the respective toothed racks 50 and 52. A biasing spring 42 extends between pivoting support mount 40 and the newspaper support trolley 24 such that pivoting support mount 40 is releasably secured in the engagement position as shown best in Figures 5 and 6. It is an important feature of the present invention that first and second gear wheels 36 and 38 each include a respective clutch assembly 37 and 39 mounted within each of the first and second gear wheels 36 and 38, the clutch assemblies 37 and 39 operative to prevent rotation of the first and second gear wheels 36 and 38 in either direction, rather permitting rotation of the gear wheels 36 and 38 in a single direction only. Specifically, clutch assembly 37 in gear wheel 36 permits the first gear wheel 36 to rotate in a clockwise direction, but prevents counter-clockwise rotation, as it is gear 36 which prevents newspaper support trolley 24 from moving downward when gear wheel 36 is engaged with tooth rack 50. The weight of the newspapers on the newspaper support trolley 24 would normally force the trolley to go downwards despite the biasing effect of biasing spring 34, but the presence of clutch 37 in gear wheel 36 prevents this rotation thus preventing downwards trolley movement when the gear wheel 36 is engaging rack 50. The reloading of newspapers would be performed by pivoting the gear wheels 36 and 38 away from racks 50 and 52 through outward movement of mount pivot bar 49 and then moving the newspaper support trolley 24 downwards along slide track 16. The papers are then placed on the newspaper support plate 32 and the pivoting support mount 40 is then rotated to reengage the gear wheels 36 and 38 with the toothed racks 50 and 52. The single vend newspaper machine 10 is then "primed" as will be described below. Mounted on and extending upwards from the forward end of the base 18 is a forward bulkhead 54 which, in the preferred embodiment, would be a generally vertical sheet metal plate which includes rearwardly extending tabs to provide additional structural strength to the bulkhead 54. Vertically movably mounted on forward bulkhead 54 on the rearward side thereof is a newspaper thickness sensing bar 56 which is a generally flat steel bar including a generally horizontal foot section 58, two or more vertical connection slots 60a and 60b and an angled paper-engaging tab 62 which preferably extends generally parallel with the newspaper support plate 32 and extends over and above newspaper support plate 32 such that the top most paper on the stack of newspapers may be engaged by the underside of paper-engaging tab 62. Newspaper thickness sensing bar 56 is preferably biased upwards slightly by a spring (not shown) to at least partially offset the weight of newspaper thickness sensing bar 56 and to allow for easier vertical movement of the newspaper thickness sensing bar 56. As shown best in Figures 3 and 4, vertically movable toothed rack 52 is connected to newspaper thickness sensing bar 56 by a strut 66 which is welded at one end thereof to vertically movable toothed rack 52 and includes at the opposite end thereof a generally horizontal foot 68 positioned such that foot 68 of diagonal strut 66 is seated on horizontal foot 58 of newspaper thickness sensing bar 56. In this manner, vertical movement of newspaper thickness sensing bar 56 is translated directly to vertical movement of vertically movable toothed rack 52 such that when newspaper thickness sensing bar 56 falls a particular distance, vertically movable toothed rack 52 falls exactly the same distance. The coordinated functionality of each of the above-described features will be set forth below in connection with the operation of the door-mounted internal features of the single-vend newspaper vending machine 10. For lifting the vertically movable toothed rack 52, a lift bar 72 and end-mounted roller 74 are fixedly mounted on a pivoting lift rod 76 which is rotatably mounted extending generally horizontally through base 18 to be attached to a lever arm 78 which extends perpendicular to lift rod 76 and forwards therefrom. In this manner, lifting of lever 78 results in rotation of lift rod 76, which thus rotates lift bar 72 and causes roller 74 to contact the underside of strut 66. As lever 78 is further rotated, the roller 74 engaging strut 66 pushes diagonal strut upwards thus forcing vertical moveable toothed rack 52 upwards likewise. Due to the engagement of second gear wheel 38 with vertical moveable toothed rack 52, and the fact that counter-clockwise rotation of the second gear wheel 38 is prevented by clutch 39, as the vertical moveable toothed rack 52 moves upwards, the newspaper support trolley 24 is moved upwards also, thus positioning the next paper in the rack for distribution. Of course, the extent to which roller 74 may raise strut 66 is limited by the length of lift bar 72 and, therefore, the length of lift bar 72 is critical to the invention as it is that length which determines the extent to which the vertically movable toothed rack 52 will be raised. In the preferred embodiment, the length of lift bar 72 would be such that the topmost paper on the stack would be moved to the proper dispensing position each and every time. An adjustment device such as a screw, inserted washers or the like may be included for fine adjustment of the position of the topmost newspaper the operation of which would be understood by those skilled in the art. To further assist in the lifting of the vertically movable toothed rack 52, a spring (not shown) preferably extends upwards from adjacent the base of vertically movable toothed rack 52 to a point above on slide track 16 as shown in Figure 3 to bias vertically movable toothed rack 52 upwards to at least partially offset the weight of vertically movable toothed rack 52 and strut 66. The door elements of the single vend newspaper vending machine 10 are best shown in Figures 2, 3 and 7-21 as including an operating handle 100 which is hinge mounted on the front of front door 14 as shown in Figures 1-3. As coins are inserted into the coin intake slot 98, a standard coin intake mechanism 101 accepts the coins, ascertains that the correct coin amount has been inserted, and deposits them in a coin deposit box 84 shown best in Figure 2. Once the appropriate coins are fed into the coin intake mechanism 101, solenoid 103 fires which pivots bar 107 downwards as shown in Figures 11-13. Bar 107 preferably includes a curved outer surface which allows the operating handle 100 to then be pulled forward by a person desiring the dispensing of a newspaper from the single vend newspaper vending machine 10, the operation of which will be described hereafter. The operating handle 100 is operatively connected to several different actuating mechanisms, but the main actuating mechanism is shown best in Figure 11 as including a generally upright plate 104 mounted on and extending downwards from the lower end of the operating handle 100, the plate including a semicircular cut 105 on the inner edge thereof, as shown in Figure 11. The upwardly projecting leg of L-shaped arm 110 butts against bar box 102 when the handle 100 is pulled forward prior to the tripping of bar 107. When the handle 100 is pulled forward prior to the insertion of the correct amount of coins, stopping roller 116 prevents the handle from opening due to the roller 116 being seated in semicircular cut 105. Once the correct amount of coins are input, solenoid 103 fires which pivots bar 107 downwards. L-shaped arm 110 is pivoted downwards and the pivot stop arm 114 which is pivotably connected to the frame adjacent arm 110 pivots slightly clockwise to disengage the stopping roller 116 mounted on stop arm 114 away from the semicircular cut 105 and permitting rotation of the handle 100. The stopping roller 116 rolls along the inner edge of the upright plate 104, and as the roller 116 does so, the L-shaped arm 110 is moved forwards towards the handle 100. The curved outer surface of bar 107 causes the L-shaped arm 110 to slide on the bar 107 until the rearward-pointing upper triangular section of the arm 110 is moved past the curved surface of the bar 107. After the handle 100 has been fully opened, as the handle 100 returns to its closed position, the rearward-pointing upper triangular section of the arm 110 moves back past the curved surface of the bar 107 and forcibly pivots the bar 107 upwards to return the bar 107 to its original position. The device thus resets until the proper coinage is input. The remaining features in Figures 11-13 are merely elements of a standard coin input device and are not elements of the present invention. It is to be further understood that minor modifications of the elements described herein may be necessary to accommodate different types of coin intake mechanisms, but the operation, construction and arrangement of the elements will remain generally similar. It should be noted that because each of the elements of the door securement system are inside the machine housing 12 and the front door 14, it will be substantially more difficult for a user of the present invention to sabotage the operation of the device, as opposed to those devices found in the prior art which have the latch or other such door access control elements exposed when a paper is dispensed. Also, connected to and extending from the lower end of the handle 100 is metal actuating plate 208, which in the preferred embodiment is adjacent operating handle 100 on the interior of the front door 14, the plate 208 connected to operating handle 100 such that rotation of operating handle 100 about its pivot point results in rotation of metal actuating plate 208 about pivot point 210. As shown best in Figure 17, metal actuating plate 208 includes an arcuate slot 212 having left and right legs 214 and 216. Connected to the top of metal actuating plate 208 is a hydraulic cylinder 209 which extends between metal actuating plate 208 and the interior of front door 14 as shown in Figure 4, the hydraulic cylinder 209 biasing the handle 100 back to its rest position adjacent the door 14. A pusher mechanism actuation bar 120 is connected to plate 208 adjacent hydraulic cylinder 218, the actuation bar 120 extending upwards from metal actuating plate 208 to connect to the newspaper pusher mechanism 140, which will be described below. Finally, a handle return prevention device 122 is mounted on the inner side of metal actuating plate 208, as shown in Figures 17- 19, the handle return prevention device 122 operative to prevent operating handle 100 from returning to its rest position adjacent to coin intake mechanism 102 unless operating handle 100 has been pulled downwards the full extent permitted by the operating mechanism. Figures 11 and 17-19 show the handle return prevention device 122, which includes a shift bar 135 pivotably connected to a ratchet bar 136 at one end thereof and including a transversely extended pin 134 which extends into slot 212. Pivotably mounted on the opposite end of ratchet bar 136 is a ratchet 137 which ratchetly engages a ratchet plate 138 mounted on and extending inwards from door 14. If the handle 100 is not opened to its full extent and the operator attempts to return the handle 100 to its rest position, the ratchet 137 catches on ratchet plate 138 thus causing ratchet bar 136 to be retained in seat 139 in plate 208 until the operator finishes opening the handle 100 to its full extent. This will prevent operation of the newspaper vending machine 10 in an improper manner. Finally, mounted on paper release chute 170 is a gate mechanism 224 which prevents release of a paper to the paper release chute 170 until the operating handle 100 is pulled. The operational characteristics of the front door mechanisms can best be described in terms of sequential operations taking place as the operating handle 100 is rotated through the full extent of its rotation. First, as the operating handle 100 begins to rotate, the metal plate 104 likewise is rotated, thus causing pusher mechanism actuation bar 120 to move upwards. Pusher mechanism actuation bar 120 is connected at the upper end thereof to an overcentering device 300 which includes a generally Y-shaped yoke 301 fixedly mounted via clamp and screw 308 on a pivot rod 144 which extends generally horizontally through left chute wall 126 and extends across the pusher mechanism 144 as shown in Figure 4. The yoke 301 includes a generally horizontal arm 302 and a upwardly extending arm 304, actuation bar 120 connected to the outer end of arm 302 and arm 304 pivotably connected to L-shaped arm 306 as shown in Figure 14. The lower end of L-shaped arm 306 is connected to bracket 310 via biasing spring 312 which operates to bias the lower end of L-shaped arm downwards. The overcentering device 300 is important to the present invention as it provides additional force for the removal of the paper-engaging needles of pusher mechanism 140 during the paper moving phase of the dispensing process, as will be described herein. As actuation bar 120 is moved upwards, arm 302 is moved upwards pivoting yoke 301 and therefore pivot rod 144 in a clockwise direction. At the rotation point shown in Figure 15, L-shaped arm 306 has just contacted pivot rod 144 and spring 312 has not been extended, and thus the return mechanism (i.e. hydraulic cylinder 209) for the handle 100 provides the only rotational force being applied to pivot rod 144. Upon exceeding the rotational point shown in Figure 15, the continued upward movement of the actuation bar 120 pivots L-shaped arm 306 around pivot rod 144, as shown in Figure 16, and spring 312 is thus extended to bias L-shaped arm 306 back to its original pre-handle operation location. The biasing force of spring 312 is added to the force of hydraulic or pneumatic cylinder 209 and additional retracting force is thus applied to the pusher mechanism 144 to enable retraction of the needles from even large papers. Upon returning to the rotational location of Figure 15, the additional force of biasing spring 312 is lessened and the handle 100 is returned to its original location by the operation of cylinder 209. The cylinder force also controls the operation of the paper gate as will be explained later in this disclosure, but it is important to note that the force applied to the gate is such that damage to the paper is avoided. Such judicious application of force would not be possible without the operation of the overcentering device as described above, and thus it is believed that the presently described overcentering device is an important feature of the present invention. Pusher mechanism 140 is preferably held within a generally U-shaped pusher mechanism housing 146 which houses a pair of pusher arms 148a and 148b which are operatively connected to pusher rod 144 such that rotation of pusher rod 144 results in extension of pusher arms 148a and 148b. Figures 7-10 disclose one variation of the operative connection between pusher rod 144 and pusher arms 148a and 148b, although it is to be understood that numerous modifications to the pusher mechanism 140 may be incorporated in the present invention so long as the basic functionality of the pusher mechanism 140 is not impaired. In the preferred embodiment, the engagement mechanism for pusher arms 148a and 148b includes elements on each side of the housing 146 and, therefore, the following description of the connection elements adjacent pusher arm 148a which operatively connect pusher arm 148a to pusher rod 144 should be understood to apply to the connection elements adjacent pusher arm 148b. Pusher arm 148a preferably includes an angle of approximately 45 degrees and is divided into a connection leg 150 and an engagement leg 152 which has at the end thereof a needle-equipped engagement wheel 160. The end of connection leg 150 is pivotably connected to a lower rod 153 which permits rotation of pusher arm 148a thereabout. A connection strut 154 extends from and is pivotably connected to lower rod 153 via short link 155, with the connection of connection strut 154 to connection leg 150 being a pivotable connection. Rotation of pusher rod 144 clockwise thus results in pusher arm 148a being pivoted away from the outer wall 132 of front door 14. To direct the movement of pusher arm 148a as desired to engage the topmost paper 90 on the stack 92, a guide link 156 extends between a pivotable connection mounted on the housing 146 adjacent outer wall 132 of front door 14 and is rotatably connected to lower rod 153. Guide link 156 directs the movement of pusher arm 148a so that engagement leg 152 is moved forwards and downwards to engage the topmost paper 90 on the stack 92. Coiled springs 157a and 157b bias pusher arms 148a and 148b forwards and allow independent pivoting motion of the pusher arms 148a and 148b relative to one another to accommodate newspapers having odd-shaped inserts or the like. The pusher mechanism 140 thus operates in the following manner. As actuation bar 120 is moved upwards, overcentering device 300 is engaged as described above thus and pusher rod 144 is rotated in a clockwise manner. The rotation of pusher rod 144 moves connection strut 154 outward from outer wall 132 of front door 14 thus pivoting the pusher arms 148a and 148b from a rest position as shown in Figure 8 to an engagement position as shown in Figure 9. As rotation of overcentering device 300 continues, connection strut 154 is further rotated and guide link 156 causes the engagement leg 152 and engagement wheel 160, and the needles thereon, to remain in contact with the topmost paper 90 thus forcing the topmost paper 90 rearward and upwards on the stack 92. The topmost paper 90 is thus removed from underneath the newspaper thickness sensing bar 56 and specifically the paper-engaging tab 62, allowing the newspaper thickness sensing bar 56 to fall downwards to contact the next highest paper 94 on stack 92. The overcentering device 300 is particularly necessary when thicker and heavier papers are being dispensed, as the needles on the engagement wheel 160 need to be securely pressed into the paper for proper dispensing. The additional force supplied by biasing spring 312 enables the proper operation of the invention in such situations. When operating handle 100 is returned to its rest position, the pusher rod 144 is rotated counter-clockwise, thus reversing the motion of pusher arms 148a and 148b and allowing the topmost paper 90 to move downwards and forwards over the paper-engaging tab 62 of newspaper thickness sensing bar 56. As the pusher arms 148a and 148b return to their rest position, they disengage from the topmost paper 90 and gravity takes over as the topmost paper 90 slides forwards and downwards into the opening 172 of paper release chute 170. Because the elevator system has already moved the next highest paper 94 on the stack 92 to the position of the previous topmost paper 90, the entire process is ready to begin again. Also occurring as operating handle 100 is rotated, the display paper 180, shown best in Figure 1, is dispensed as the actuating plate 208 causes the gate mechanism 224 at the bottom of chute 170 to open. Gate mechanism 224, shown best in Figures 18 and 19, includes a gate bar 163 which is connected at one end to the gate 164 itself and at the other end to a pin 162 which extends transversely through right leg 116 of slot 112. Gate 164 is pivotably mounted adjacent chute 170 and closes off chute 170 when the handle 100 is in rest position. As the handle 100 is rotated, the pin 162 within slot 112 slides and causes rotation of the gate 164 to an open position, as shown in Figure 18. In Figure 19, it is shown that if the display paper 180 is not removed, the gate 164 cannot close, and thus the newspaper pusher mechanism 140 cannot return to rest position and therefore the paper 90 being held by the newspaper pusher mechanism 140 will not be released. In this manner, the dispensing of only a single newspaper is guaranteed. The overcentering device 300 contributes to the operation of the present invention by providing additional force for the removal of the paper-engaging needles from the newspaper being dispensed without adding force to the closing of gate 164, which could result in paper damage and thus render the present invention unusable. It is important that the some type of newspaper pusher removal device that operates to increase the needle- removing force but which is isolated from the gate closing force, such as the above- described overcentering device 300, be provided, although it should be noted that numerous types of devices could be used which accomplish the same desired result. The lever-engaging bar 124 and roller 126 thereon engages the lever 78 during the performing of the above operations and during the rotation of handle 100. The lever- engaging bar 124 pushes the lever 78 upwards thus pivoting lift rod 76, lift bar 72 and roller 74, as shown best in Figures 2-4. In Figure 3, the above-described operations (the operation of the pusher mechanism and the opening of the gate) have occurred or are occurring. It is seen that the lift bar 72 is contacting the strut 66 in Figure 3, and therefore has begun to move the rack 52 upwards along with the entire newspaper trolley 24. As was described previously, the distance "d" of the upwards shift of newspaper support trolley 24 is exactly equal to the thickness of the topmost newspaper 90 given by the distance fallen by the newspaper thickness sensing bar 56. The engagement of first gear wheel 36 with fixed toothed rack 50 keeps the newspaper support trolley 24 at the same height until the trolley is moved upwards as described above. It should be noted that once the refilling of newspapers has been completed, the refiller should manually lift lever 78 to set the newspaper support trolley to the correct height. The door 14 is then closed and locked and the handle 100 is operated to dispense the first paper into the display window 182, as shown in Figure 1, thus "priming" the newspaper vending machine 10. Finally, a locking device 400 would be provided to secure the front door 14 of the invention in the closed position. Figures 22 and 23 disclose a second embodiment 500 of the present invention which in almost all respects internally operates exactly the same as the first embodiment herein. However, it is seen that the second embodiment 500 is designed as a stand-alone unit having a pedestal 510 or the like and it is expected that if a dispensing chute such as that described in connection with the first embodiment were to be used, an individual would have to stoop to obtain a newspaper, which is undesirable. Therefore, the variation envisioned by the inventor is that as the topmost paper is removed from the stack of newspapers, it will fall into a display chute 502 which can be easily accessed by opening the front door 504 of the second embodiment 500, as shown in Figure 23, and then reaching into the display chute 502 to remove the newspaper 506 on display therein. A metal plate would prevent access to the interior of the device when front door 504 is opened, as shown in Figure 23. When the front door 504 is returned to the closed position, a gate (not shown) is opened to release the next newspaper on the stack into the display chute 502 and the process begins again. It is expected that the internal functional characteristics of this embodiment 500 will be substantially identical to those described in connection with the first embodiment. It is to be understood that numerous modifications, substitutions and additions may be made to the newspaper vending machines described herein. For example, the exact dimensions, materials and functional characteristics of the features described above may be changed or modified. Additionally, the precise arrangement of the features within the newspaper vending machines described herein may be changed or modified so long as the functionality of the invention is not impaired. Also, the present invention may be used to dispense various types of magazines and other publications, in addition to vending newspapers. Finally, modification of the size, shape and appearance of the embodiments described herein is expected and will not affect the scope of protection or the specifics of the disclosure contained herein. There have therefore been shown and described single vend newspaper vending machines which accomplish at least all of their intended objectives and purposes.

Claims: Claims 1. A single vend newspaper vending machine comprising; a machine housing having outer walls; a newspaper elevator system mounted in said machine housing, said newspaper elevator system including; track means mounted in said machine housing; a generally vertical fixed toothed rack mounted in said machine housing; an upright vertically movable toothed rack movably mounted in said machine housing; a newspaper support trolley movably mounted on said track means; first and second clutch-equipped gear wheels, said first clutch-equipped gear wheel operative to engage said fixed toothed rack, said second clutch-equipped gear wheel operative to engage said vertically movable toothed rack; said track means, said fixed toothed rack, said vertically movable toothed rack and said newspaper support trolley mounted within said machine housing such that when said newspaper support trolley is movably mounted on said track means, said first clutch-equipped gearwheel engages said fixed toothed rack and said second clutch-equipped gear wheel engages said vertically movable toothed rack; said first clutch-equipped gear wheel operative to restrict downward movement of said newspaper support trolley when engaging said fixed toothed rack, said second clutch-equipped gearwheel operative to permit downward movement of said vertically movable toothed rack, upwards movement of said vertically movable toothed rack causing said newspaper support trolley to be moved upwardly therewith; newspaper thickness sensing means movably mounted in said machine housing and operative to determine the thickness of the topmost paper; newspaper pusher means mounted in said machine housing operative to engage a topmost paper on a newspaper stack supported on said newspaper support trolley and slide the topmost newspaper off of the newspaper stack; an access opening extending through said machine housing, said access opening operative to permit access to the topmost paper after the topmost paper has been slid off of the newspaper stack; access opening control means mounted adjacent said access opening, said access opening control means including a door operative to cover said access opening and door opening control means for releasably latching said door in a closed, access opening covering position; and newspaper pusher and movable toothed rack actuation means operatively connected to said newspaper pusher means and said movable toothed rack such that engagement of said actuation means first actuates said newspaper pusher means to remove the topmost paper from the newspaper stack, said actuation means operative to secondly raise said movable toothed rack a distance determined by the thickness of the topmost paper as determined by said newspaper thickness sensing means, thereby raising said newspaper support trolley such that the penultimate newspaper replaces the vended topmost newspaper in substantially the same position that the topmost newspaper was in prior to being vended. 2. The single vend newspaper vending machine of claim 1 wherein said newspaper support trolley further comprises an inclined newspaper support plate for supporting a stack of newspapers thereon. 3. The single vend newspaper vending machine of claim 2 wherein said newspaper thickness sensing means comprises a generally flat steel bar including an angled paper-engaging tab which preferably extends generally parallel with said newspaper support plate and extends over and above said newspaper support plate such that the topmost newspaper on the stack of newspapers may be engaged by the underside of said paper-engaging tab, said newspaper thickness sensing means operative to determine the thickness of the topmost newspaper by moving downwards to contact the penultimate newspaper on the stack when the topmost newspaper is moved from underneath said paper-engaging tab by said newspaper pusher means, the thickness of the topmost paper equal to the distance moved downwards by said newspaper thickness sensing means. 4. The single vend newspaper vending machine of claim 1 wherein said newspaper pusher means comprises at least one pusher arm movably mounted above and adjacent to the position of the topmost newspaper, said pusher arm having needle engagement means for slightly piercing the upper surface of the topmost paper, said arm operative to move the topmost paper to a dispensing position. 5. The single vend newspaper vending machine of claim 1 wherein said newspaper pusher and movable height control member actuation means comprises a pivotably mounted operating handle mounted on the exterior of said machine housing, said operating handle operatively connected to said newspaper pusher means and said movable height control member such that rotation of said handle first causes said newspaper pusher means to dislodge the topmost paper to be dispensed and second raises said height control member a distance determined by the thickness of the topmost paper as determined by said newspaper thickness sensing means, thereby raising said newspaper support trolley such that the penultimate newspaper replaces the vended topmost newspaper in substantially the same position that the topmost newspaper was in prior to being vended. 6. The single vend newspaper vending machine of claim 1 further comprising an overcentering device operatively interposed between said newspaper pusher and movable height control member actuation means and said newspaper pusher means, said overcentering device operative to translate actuation of said actuation means into additional force for removal of said newspaper pusher means from a paper being dispensed during the paper moving phase of the dispensing process, whereby larger and thicker papers are correctly dispensed. 7. The single vend newspaper vending machine of claim 1 further comprising a coin input device operative to accept coins and restrict operation of said newspaper pusher and movable height control member actuation means unless the correct coinage is deposited in said coin input device. 8. The single vend newspaper vending machine of claim 5 wherein said pivotably mounted operating handle mounted on the exterior of said machine housing is free of externally mounted latching mechanisms whereby intentional disabling of the operation of said single vend newspaper vending machine by jamming of the latching mechanism is generally prevented. 9. A single vend newspaper vending machine comprising; a machine housing having outer walls; a newspaper elevator system mounted in said machine housing, said newspaper elevator system including; track means mounted in said machine housing; a generally vertical fixed toothed rack mounted in said machine housing; an upright vertically movable toothed rack movably mounted in said machine housing; a newspaper support trolley movably mounted on said track means; first and second clutch-equipped gear wheels, said first clutch-equipped gear wheel operative to engage said fixed toothed rack, said second clutch-equipped gear wheel operative to engage said vertically movable toothed rack; said track means, said fixed toothed rack, said vertically movable toothed rack and said newspaper support trolley mounted within said machine housing such that when said newspaper support trolley is movably mounted on said track means, said first clutch-equipped gear wheel engages said fixed toothed rack and said second clutch-equipped gearwheel engages said vertically movable toothed rack; said first clutch-equipped gear wheel operative to restrict downward movement of said newspaper support trolley when engaging said fixed toothed rack, said second clutch-equipped gearwheel operative to permit downward movement of said vertically movable toothed rack, upwards movement of said vertically movable toothed rack causing said newspaper support trolley to be moved upwardly therewith; newspaper thickness sensing means movably mounted in said machine housing and operative to determine the thickness of the topmost paper; newspaper pusher means mounted in said machine housing operative to engage a topmost paper on a newspaper stack supported on said newspaper support trolley and slide the topmost newspaper off of the newspaper stack; an access opening extending through said machine housing, said access opening operative to permit access to the topmost paper after the topmost paper has been slid off of the newspaper stack; access opening control means mounted adjacent said access opening, said access opening control means including a door operative to cover said access opening and door opening control means for releasably latching said door in a closed, access opening covering position; newspaper pusher and movable toothed rack actuation means operatively connected to said newspaper pusher means and said movable toothed rack such that engagement of said actuation means first actuates said newspaper pusher means to remove the topmost paper from the newspaper stack, said actuation means operative to secondly raise said movable toothed rack a distance determined by the thickness of the topmost paper as determined by said newspaper thickness sensing means, thereby raising said newspaper support trolley such that the penultimate newspaper replaces the vended topmost newspaper in substantially the same position that the topmost newspaper was in prior to being vended; and newspaper pusher removal means operatively interposed between said newspaper pusher and movable height control member actuation means and said newspaper pusher means, said newspaper pusher removal means operative to translate actuation of said actuation means into additional force for removal of said newspaper pusher means during the from a paper being dispensed during the paper moving phase of the dispensing process, whereby larger and thicker papers are correctly dispensed.

Inventors: MASEK THOMAS F, MASEK, THOMAS, F.
Applicants: MASEK THOMAS F, MASEK, THOMAS, F.
Application year: 2000
Main classification: B65G59
IPC codes: G07F11