US3392979A - Means for counting shots hitting a target - Google Patents

Means for counting shots hitting a target Download PDF

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Publication number
US3392979A
US3392979A US420937A US42093764A US3392979A US 3392979 A US3392979 A US 3392979A US 420937 A US420937 A US 420937A US 42093764 A US42093764 A US 42093764A US 3392979 A US3392979 A US 3392979A
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United States
Prior art keywords
target
piezo
electric element
counting
shots
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US420937A
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English (en)
Inventor
Matti G Wilska
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.)
Vaisala Oy
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Vaisala Oy
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Filing date
Publication date
Application filed by Vaisala Oy filed Critical Vaisala Oy
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Publication of US3392979A publication Critical patent/US3392979A/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41J—TARGETS; TARGET RANGES; BULLET CATCHERS
    • F41J5/00—Target indicating systems; Target-hit or score detecting systems
    • F41J5/04—Electric hit-indicating systems; Detecting hits by actuation of electric contacts or switches
    • F41J5/056—Switch actuation by hit-generated mechanical vibration of the target body, e.g. using shock or vibration transducers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41J—TARGETS; TARGET RANGES; BULLET CATCHERS
    • F41J5/00—Target indicating systems; Target-hit or score detecting systems
    • F41J5/06—Acoustic hit-indicating systems, i.e. detecting of shock waves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41J—TARGETS; TARGET RANGES; BULLET CATCHERS
    • F41J5/00—Target indicating systems; Target-hit or score detecting systems
    • F41J5/14—Apparatus for signalling hits or scores to the shooter, e.g. manually operated, or for communication between target and shooter; Apparatus for recording hits or scores
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
    • G06M1/00—Design features of general application
    • G06M1/08—Design features of general application for actuating the drive
    • G06M1/10—Design features of general application for actuating the drive by electric or magnetic means

Definitions

  • ABSTRACT OF THE DISCLOSURE An arrangement for recording and counting shots impinging upon a target.
  • a piezo-electric element secured to the target becomes actuated whenever a shot impinges on the target.
  • the mechanical actuation of the piezo-electric element is converted into an electrical signal which is transmitted to a remotely-located counter.
  • the counter registers the electrical signal and thus maintains a record of the shots impinging on the target.
  • the circuit rectifies the signal generated by the piezo-electric element, and at the same time, permits a test signal or control signal to bypass the piezo-electric element.
  • the arrangement permits a test or control signal to be applied for determining whether the transmisison lines leading to and from the piezo-electric element, are in proper operating condition.
  • This invention relates to a means that will register shots hitting a target, particularly targets situated on the ground, the shots being fired from an airplane.
  • the object of this invention is to provide a reliable hit counter for targets without the above mentioned defect. This is achieved by the construction according to claim 1, characterized by the novelty features specified therein.
  • FIG. 1 shows the device diagrammatically
  • FIG. 2 shows a target having mounted thereon the indicator heads of the invention.
  • the indicator head is designated with the reference number 1. It consists of a bushing like covering 4 and elements therein, namely a piezoelectrical means 6 and a current rectifying means 7 consisting of two semiconductor diodes. These elements are. cast into a solid filler partially filling the covering 4 but leaving one of the two ends of the piezoelectrical means 6 free in a covered, gas-filled enclosure. A shock at right angles to it will then bring to a fast decaying vibrating state.
  • the piezoelectrical means consists of a bar of lead zirconate silvered on both sides.
  • the current rectifying means 7 cast into the filler are provided for two purposes. In the first place they are adapted to rectify and sum up the decaying pulses given by the piezoelectrical means put in vibration because of the shot hitting the target. In the second place the rectifying means will allow the passage of a direct control current through the indicator head. As the piezoelectrical means are electrically nonconducting the control current will bypass it through the diodes.
  • the pulse from the indicator ice head is amplified in a transistor amplifier 2 and is then led to a counter and indicator means 3. Between the amplifier and the trench where the counter is situated there is a signal wire 16, a wire 17 for supplying operating power and a ground wire 18.
  • the signal wires 15 and 16 are pro vided with capacitors 14 for preventing the direct control current from coming to the counter and the amplifier.
  • the signal wire 16 is connected through a gas glow discharge lamp 13 and a contact switch 12 to a direct control current source having for example a voltage of 300 volts. Ignition voltage for the gas glow discharge lamp is approximately volts.
  • Each indicator head has its own gas glow discharge lamp situated beside the lamp 13. The control current will by pass the amplifier 2 through the gas glow discharge lamp 11, which will ignite, when the current is switched on with the switch 12.
  • FIGURE 2 shows a target with four boards 8 and hence with four indicator heads 1. From every indicator head goes a signal wire 15 to an amplifier and further to a counter.
  • Every board 8 in the target has a small hole into which the indicator head 1 is mounted and tightened by means of a flange on the bushing-like covering and a nut 5.
  • the counting and indicating means 3 can be miles away from the target.
  • the working condition of the device can be checked by connecting a direct current to the control circuit by the switch 12.
  • the control current will pass through the gas glow discharge lamp 13, the wire 16, the gas glow discharge lamp 11, the wire 15 and the diodes 7 and back through the ground wire if the wires are in working order and the ignition of the gas glow discharge lamp 13 will indicate that the two wires and the indicator head are in working order.
  • the gas glow discharge lamp 11 does not affect the amplifier adversely when there is no control current, as it has an igniting voltage that is higher than the signal voltage.
  • An arrangement for counting shots impinging on a target comprising, in combination, a target member located in the path of said shots so that shots directed against said target member may impinge thereon and apply a shock to said target member; a piezo-electric element secured to said target member for converting shocks applied to said target member by said shots into electrical signals; a housing secured to said target member and partially filled with solid filler material and partially filled with gas, one end of said piezo-electric element being embedded in said solid filler material and the other end of said piezoelectric element being exposed to said gas; and counting means connected to said piezo-electrical element for receiving and counting the electrical signals generated by said piezo-electric element resulting from shots impinging upon said target, so that said counting means registers the hits on said target member; conductor means connecting said counter to said piezo-electric element; and means in circuit with said conductor means and said piezo-electric element for determining that said conductor means are in working order.
  • An arrangement as defined in claim 1 including amplifying means connected between said piezo-electric element and said counting means for amplifying said electrical signals generated by said piezo-electric element.
  • An arrangement for counting shots impinging on a target comprising, in combination, a target member located in the path of said shots so that shots directed against said target member may impinge thereon and apply a shock to said target member; a piezo-electric element secured to said target member for converting shocks applied to said target member by said shots into electrical signals; counting means connected to said piezo-electric element for receiving and counting the electrical signals generated by said piezo-electric element in response to the shocks applied to said piezo-electric element resulting from shots impinging upon said target, so that said counting means registers the hits on said target member; amplifying means connected between said piezo-electric element and said counting means for amplifying said electrical signals generated by said piezo-electric element; first rectifying means connected between said piezo-electric element and said amplifying means; and second rectifying means connected in parallel with said piezo-electric element so that said electrical signals generated by said pieZo-electric element from said shocks are rectified and a direct-current path prevails through said rectifying

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Audible And Visible Signals (AREA)
US420937A 1964-01-02 1964-12-24 Means for counting shots hitting a target Expired - Lifetime US3392979A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI264 1964-01-02

Publications (1)

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US3392979A true US3392979A (en) 1968-07-16

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US420937A Expired - Lifetime US3392979A (en) 1964-01-02 1964-12-24 Means for counting shots hitting a target

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US (1) US3392979A (xx)
DE (1) DE1428725A1 (xx)
GB (1) GB1042110A (xx)
SE (1) SE306259B (xx)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3690661A (en) * 1970-02-12 1972-09-12 Armin Scharz Automatic hit indicating shooting target
US4129299A (en) * 1977-02-11 1978-12-12 Caswell Equipment Company Apparatus for hit scoring targets
US4222564A (en) * 1977-06-13 1980-09-16 Aba Electromechanical Systems, Inc. Automated scoring target system
US4748366A (en) * 1986-09-02 1988-05-31 Taylor George W Novel uses of piezoelectric materials for creating optical effects
US4865329A (en) * 1986-12-11 1989-09-12 Carlheinz Geuss Retainer means for use with a hit sensor
US5336959A (en) * 1988-12-16 1994-08-09 The Whitaker Corporation Impact zone detection device
US5801475A (en) * 1993-09-30 1998-09-01 Mitsuteru Kimura Piezo-electricity generation device
US5944317A (en) * 1997-07-07 1999-08-31 Rohrbaugh; George Wilson Shock wave scoring apparatus employing dual concentric curved rod sensors
WO2006006952A3 (en) * 2003-12-23 2006-03-30 Astenjohnson Inc Improved dewatering of a paper web in a press section of a papermaking machine and press felt therefor
DE102014104358A1 (de) * 2014-03-28 2015-10-01 Thyssenkrupp Ag Verfahren zur Detektion eines Schadens an einer Außenhaut eines Schiffes und Folienanordnung zur Detektion eines Schadens an einer Außenhaut eines Schiffes
US10801667B2 (en) 2015-04-29 2020-10-13 Graco Minnesota Inc. Lubrication injector with energy harvesting

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2120760B (en) * 1979-01-08 1984-05-23 Australasian Training Aids Pty Marksmanship training apparatus

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1147507A (fr) * 1956-02-22 1957-11-26 Onera (Off Nat Aerospatiale) Indicateur de tir
US3056932A (en) * 1959-11-16 1962-10-02 Electro Voice Transducer power supply for oscillators
US3099447A (en) * 1960-06-09 1963-07-30 Brunswick Corp Sonic pin detection means
US3158372A (en) * 1961-02-20 1964-11-24 Svanska Aeroplan Aktiebolaget Signaling device for scoring gunnery target practice

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1147507A (fr) * 1956-02-22 1957-11-26 Onera (Off Nat Aerospatiale) Indicateur de tir
US3056932A (en) * 1959-11-16 1962-10-02 Electro Voice Transducer power supply for oscillators
US3099447A (en) * 1960-06-09 1963-07-30 Brunswick Corp Sonic pin detection means
US3158372A (en) * 1961-02-20 1964-11-24 Svanska Aeroplan Aktiebolaget Signaling device for scoring gunnery target practice

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3690661A (en) * 1970-02-12 1972-09-12 Armin Scharz Automatic hit indicating shooting target
US4129299A (en) * 1977-02-11 1978-12-12 Caswell Equipment Company Apparatus for hit scoring targets
US4222564A (en) * 1977-06-13 1980-09-16 Aba Electromechanical Systems, Inc. Automated scoring target system
US4748366A (en) * 1986-09-02 1988-05-31 Taylor George W Novel uses of piezoelectric materials for creating optical effects
US4865329A (en) * 1986-12-11 1989-09-12 Carlheinz Geuss Retainer means for use with a hit sensor
US5336959A (en) * 1988-12-16 1994-08-09 The Whitaker Corporation Impact zone detection device
US5801475A (en) * 1993-09-30 1998-09-01 Mitsuteru Kimura Piezo-electricity generation device
US5944317A (en) * 1997-07-07 1999-08-31 Rohrbaugh; George Wilson Shock wave scoring apparatus employing dual concentric curved rod sensors
WO2006006952A3 (en) * 2003-12-23 2006-03-30 Astenjohnson Inc Improved dewatering of a paper web in a press section of a papermaking machine and press felt therefor
DE102014104358A1 (de) * 2014-03-28 2015-10-01 Thyssenkrupp Ag Verfahren zur Detektion eines Schadens an einer Außenhaut eines Schiffes und Folienanordnung zur Detektion eines Schadens an einer Außenhaut eines Schiffes
EP3122623B1 (de) * 2014-03-28 2019-06-19 ThyssenKrupp Marine Systems GmbH Verfahren zur detektion eines schadens an einer aussenhaut eines schiffes und folienanordnung zur detektion eines schadens an einer aussenhaut eines schiffes
US10801667B2 (en) 2015-04-29 2020-10-13 Graco Minnesota Inc. Lubrication injector with energy harvesting

Also Published As

Publication number Publication date
DE1428725A1 (de) 1969-01-02
GB1042110A (en) 1966-09-07
SE306259B (xx) 1968-11-18

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