The Counterfeit Coin Detector Patent Archive

Every device ever patented to catch a bad coin

Coin chute

Patent drawing showing a tall rectangular cabinet with internal gears, a tilting coin tray, ratchet wheel, pawl arm, and coin chutes labeled with reference letters, alongside detail views of a sliding coin plate and tray locking mechanism.COIN OR CHECK CONTROLLED DELIVERY APPARATUSJohn W. Smallwood · January 16, 1894Patent drawing showing six figures of a coin-slot protection mechanism with a reciprocating slide, spring-loaded ejector, magnet, and coin chute, plus hand-operated views of a coin being inserted.MEANS FOR PROTECTING RECEIVING-OPENINGS OF COIN-CONTROLLED MACHINES.Almy Le Grand Peirce · March 20, 1894A patent drawing of a small house-shaped mechanical toy bank with an arched roof, barred windows, and a coin slot, alongside detailed mechanical diagrams of its internal music-box gears, coin chute, locking latch, and stop-wheel components.COIN-CONTROLLED MUSICAL TOY BANK.Henry W. Porter · October 30, 1894Patent drawing of a coin-introducing device showing four figures: a top plan view of a square plate with a central rotating disk and crank, a side sectional view with a chute below, a plan view of the middle plate with circular openings labeled b, c, and d, and a bottom plate view with three circular openings labeled for cent, nickel coin, and a central opening.COIN-INTRODUCING DEVICE FOR COIN-CONTROLLED VENDING-MACHINES.Willard H. Gilman · October 8, 1895Patent drawing of a wall-mounted telephone pay station showing the magneto signal box, battery box, telephone receiver, bell, and an attached coin toll-box with internal chute and signal mechanism, alongside detailed sectional views of the toll-box interior and transmitter arm.COIN-CONTROLLED TELEPHONE PAY-STATION.William Gray · February 8, 1898Patent drawing of a coin-tester mechanism showing an inclined housing with a slotted plate, pivoted magnet, and hooked washer-catcher arm inside a metal frame, illustrated from multiple side and sectional views.COIN-TESTER FOR COIN-CONTROLLED APPARATUS.John H. Volkmann · October 4, 1898Exploded mechanical drawings of a metal coin-detector case with slotted chutes, pivoting studded levers, a push-bar handle, and a glass-covered display opening showing three coin discs stacked in the chute.BOGUS-COIN DETECTOR FOR COIN-OPERATED VENDING-MACHINESMortimer B. Mills · November 8, 1898Patent drawing showing five figures of a mechanical coin-guard device with a vertical coin chute, a U-shaped pivoting gate with arms fitting into grooves, a leaf-spring, and a rotating arbor with releasing lever, all numbered with reference numerals like 1 through 21.COIN-GUARD OR CONTROLLING DEVICE FOR COIN-OPERATED MACHINES.Robert Fred. Tochtermann · December 12, 1899Patent drawing sheets showing a mechanical coin-slot fraud preventive device with a hinged plate, adjustable stop, spring-loaded roller, handle rod, and return chute, illustrated across twelve labeled figures with numbered parts.FRAUD-PREVENTIVE DEVICE FOR COIN MECHANISMS.John Fritsche · April 30, 1907Patent drawing showing the interior of a vending machine casing with a coin slot, an inclined chute leading to a pivoted dumping table with a hooked gripper arm, and separate accepting and rejecting chutes below, along with detail views of the gripper and shedder mechanism.COIN-SORTING MECHANISMCharles E. Dellenbarger · June 30, 1908Patent drawing of a coin chute mechanism with a coin (11) resting against a pivoted stop pin, a prism lens (13) mounted at an angled opening to magnify the coin's image, and a rock shaft, spring, and detent arm assembly (32-42) that releases the coin when a new one is deposited.SLUG-DETECTING DEVICE FOR COIN-CONTROLLED MACHINES.Frank Hedley and James S. Doyle · October 12, 1926Patent drawing sheets showing exploded mechanical views of a coin-controlled dispensing machine with an inclined disk passage, gauge plates, pivoted deflecting arms, a magnet, and a reciprocating coin carrier tray, labeled with numbered reference lines.COIN-CONTROLLED MECHANISMArthur H. Du Grenier · February 12, 1929Exploded and assembled mechanical drawings of a metal coin chute assembly showing separate side walls, an intermediate wall with an opening, a horseshoe magnet, and a toothed rotating detector wheel that sorts coins from slugs into two discharge paths.COIN DETECTORBenjamin L. Fry · October 22, 1929Mechanical drawing of a coin detector housing showing a zigzag arrangement of inclined metal anvils, vertical guide strips, an overhead deflecting anvil, a magnet, and two discharge chutes leading to a coin-controlled device and a return cup, with a side cross-section below labeled Fig. 2.SPURIOUS COIN DETECTOR AND EJECTOREmil de Ryss · February 7, 1933Patent drawing showing an inclined coin guide tube feeding into a tiltable weighing scale with adjustable counterweight, guide strips, and separate receiving and return channels, with two smaller cross-section figures below detailing the hanger yoke and weight assembly.FRAUD PREVENTIVE DEVICEHobart J. Halsted · April 25, 1933Patent drawing showing a vertical coin chute mechanism with labeled magnets, pivots, and diverging passages, plus side-view and cross-sectional details of the coin runway construction.COIN SELECTING APPARATUSJohn Gottfried · May 2, 1933Patent drawing showing seven mechanical diagrams of a coin chute device with a pivoted bell crank, spring, and pin mechanism that sorts true coins from spurious or lightweight coins into separate collection and rejection passages.SPURIOUS COIN DETECTORCharles A. Fowler · June 6, 1933Patent drawing of a rectangular slot-machine coin box showing an inclined coin slide leading to a metallic bouncing block, with side sections illustrating the paths taken by genuine coins versus thin or soft metal slugs into a slug pocket.FRAUD PREVENTATIVE DEVICE FOR SLOT MACHINESGust Poulas · October 16, 1934Patent drawing of a coin testing and ejecting mechanism showing an angular coin chute casting with a weighing lever, counterweight bracket, resilient spring lip, and discharge opening, illustrated in six labeled figures with a signature reading B.W. Fry.COIN TESTING AND EJECTING MECHANISM FOR VENDING MACHINESBenjamin W. Fry · November 6, 1934Line drawing of a mechanical coin chute assembly showing a sliding coin tray, a triangular pivoting ejector arm with a coil spring, a shelf with numbered stop pins and discharge slots, and side/cross-section views labeled Fig. 1 through Fig. 4.COIN CHUTEBruno Radtke · July 16, 1935Patent drawing of a coin selector mechanism showing a side elevation with coin chute, magnet pole pieces with pointed projections, and a pivoted separator edge, plus a cross-section and enlarged pole piece detail.COIN SELECTORJohn Gottfried · March 9, 1937Patent drawing of a mechanical coin and slug selector showing a vertical housing with internal chutes, rollers, and a counter-balanced pivoting arm with adjustable stop screw that sorts coins from light and heavy slugs into separate discharge paths.COIN OR SLUG SELECTOR DEVICE OR ATTACHMENTWilliam M. Christopher · June 22, 1937Patent drawing of a coin testing device showing a vertical casing with internal chutes labeled A, B, C, D, magnets, pivoted gates, springs, and compartments for sorting coins and slugs by size and weight.COIN TESTING DEVICETheodore Bibicos · June 29, 1937Patent drawing showing a coin chute with heated and cold electrode contacts, a horseshoe-shaped galvanometer relay, a solenoid with movable core, and branching chutes leading to a rejector path and a genuine-coin box, with accompanying schematic wiring diagrams.DEVICE FOR THE AUTOMATIC DETECTION OF GENUINE COINSJames F. Mullen · June 30, 1942Three patent drawings showing a coin chute mechanism with a pivoted deflector, magnet, and toothed adjustment segment leading to 'ACCEPTED' and 'REJECTED' exits, plus a perspective view of the spring-loaded deflector assembly.COIN CHUTE DEFLECTORBernhard C. Grunig · October 6, 1942Patent drawing showing a coin chute assembly with a magnet mounted beside an entrance slot, a beveled shoulder, and a retrieval slot for dislodging trapped slugs, illustrated across six labeled figures.COIN DETECTING APPARATUSAlbert E. Gebert and Floyd C. Black · December 15, 1942Mechanical drawings of a coin slide apparatus showing a sliding plate with a coin pocket, an obstructing member, electromagnet, heated contact assembly, and a wiring schematic connecting to a relay and transformer circuit.APPARATUS FOR SEPARATING GENUINE FROM SPURIOUS COINSFred E. A. Wallin · March 30, 1943Patent drawing of a vending machine coin detector showing an inclined coin chute with a magnet, a bounding block, a pivoting pin, and a coin entrance slot with magnetic slug trap, illustrated across multiple mechanical elevation and sectional views.COIN DETECTING APPARATUSAlbert E. Gebert and Floyd C. Black · June 22, 1943Patent drawing of a coin machine slug ejector showing front and rear views of a boxy mechanism with a pivoted coin chute, horseshoe magnet, solenoid, and switch blades, plus detailed sectional views labeled FIG.1 through FIG.7 with numbered parts and an inventor's signature.COIN MACHINE SLUG EJECTORJules A. Fremon · April 8, 1958