US3854722A - Electrical indicating target with removable center section - Google Patents

Electrical indicating target with removable center section Download PDF

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Publication number
US3854722A
US3854722A US00316033A US31603372A US3854722A US 3854722 A US3854722 A US 3854722A US 00316033 A US00316033 A US 00316033A US 31603372 A US31603372 A US 31603372A US 3854722 A US3854722 A US 3854722A
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US
United States
Prior art keywords
elements
scoring
target
radially
zone
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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
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US00316033A
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English (en)
Inventor
J Ohlund
J Mannerblad
G Wallgard
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Saab AB
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Saab Scania AB
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Publication date
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Publication of US3854722A publication Critical patent/US3854722A/en
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    • 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

Definitions

  • a target has pairs of penetrable electrical conductive 1 Filedl 1972 sheet-like elements that are flatwise opposed and [21] APPL NO: 316 033 spaced apart a distance to be transiently electrically connected by a penetrating projectile. Each pair corresponds to an annular scoring zone.
  • PAIENT mam 1 mm sum 3 0F 2% v ELECTRICAL INDICATING TARGET WITH REMOVABLE CENTER SECTION This invention relates to a shooting target intended for fire arms that discharge projectiles of electrically conductive material, and which target is of the-kind that comprises at least two electrically conductive sheets that are carried within a frame, one behind the other, spaced apart by a distance less than the length of the projectile, with a sheet of dielectric material between them. Each of the conductive sheets is connected through conductors to an electrically operated scoring device.
  • One of the sheets is divided into area elements that are electrically insulated and laterally equally spaced from one another so that they define a number of sensitive zones which together define the target area, and each area element has its own output conductor and represents one of a plurality of predetermined hit values so that the projectile, during its passage through the target, establishes an electric contact between one of the area elements of said one sheet and the other sheet.
  • the hit will be recorded by the scoring device as a value which is dependent upon the particular one of the area elements that has been hit.
  • Targets of this kind are known through the Swiss patent specification No. 479,852 and the US. Pat. 3,539,828, among others, and systems for rifle ranges based on this automatic indicating method have also been an object of industrial production during recent years.
  • Also in using new materials that afford improved durability to tear it has been found that there is an upper limit to the number of projectiles that can be fired against the target with faultless indications, but above that limit there is a risk of an erroneous indication or none, due to projectile damages to the conductive sheets.
  • the general object of the invention is to provide a target of the above described kind which need not be rejected by reason of a local damage on a central portion of the target where it is subjected to the most intensive fire but which can easily and conveniently be repaired for a new use.
  • the object of the invention is to construct a precision target of two separate units, one of which is exchangeably mounted on the other and each of which comprises sensitive zones, which units complement each other in their assembled position in such a way that a predetermined clearing distance between the zones, related to the kind of projectile used, will be uniform between all the zones irrespective of tolerances of and between the units, thereby preserving the precision of the target.
  • FIG. 1 is a perspective view of a rifle range having shooting targets embodying the invention.
  • FIG. 2 is a cross section view of a shooting target according to the invention, the drawing scale being highly diminshed in the direction of the target plane.
  • FIG. 3 is an exploded perspective view illustrating the construction and the electric connections in the embodiment shown in FIG. 2.
  • FIG. 4 is a diagram illustrating a part of the electric connection.
  • FIG. 1 there is shown a rifle range having a number of self-indicating target boards 11 for training and competition shooting with small-bore guns.
  • Each of the target boards can be supported in a conventional way by having its legs placed in receptacles attached to the rear side of a protection wall 13.
  • a target area having an aiming dot, a figure or some other visible marking to aim at is positioned within a target frame 14 to be exposed to the gunners at the shooting station, while the crest of the wall protects the lower edge of the board and an electric fitting mounted thereon and here shown in simplified form as a connector 15 with a signal cable 16 extending therefrom.
  • the target area is divided, in conformity with the shooting regulations available for the shooting that shall take place, into fields which are marked by different values and which can be limited by concentric separating lines 17; and, further, the target area can also be divided as indicated in the example shown by radial sector lines 18, so that for a hit point not only its value but also its direction in relation to the geometric centre 19 of the board can be indicated.
  • Such a division is made in known manner by attaching
  • Such the frame at least two parallel electrically conductive sheets that are penetrable by the projectiles, from which sheets strips have been cut away representing the concentric separating lines and radial sector lines, and from which sheets conductors extend, one for each insulated area element of the target area, all leading to the connector 15.
  • a projectile When a projectile penetrates the sheets, with the sheets at different electrical potentials, it establishes during a short time a short-circuit. Through a pair of conductors a signal is received in the cable 16 that extends to the shooting station and after the signal is decoded at that station an indication visible to the gunner is obtained on an indicator 20 belonging to each target.
  • FIGS. 2 and 3 show a precision target.
  • the shooting direction is here indicated by an arrow 21 and the parts are described in the order they occur in the target along this direction.
  • a front unit which comprises the parts indicated by a bracket 1, viz.
  • a sector sheet 26 consisting in known manner of an electrically conductive sheet, e.g., made from electrically conductive rubber, and divided into sectors A H that are insulated from one another; further, an intermediate plate 27 of the same shape as the sector sheet, which plate supports the latter and is made from PVC foam or some other insulating material that is resistant to changes of form, light-weight and penetrable by projectiles; further, a ring sheet 28 of the same material as the sector sheet and having a size so adapted to the shooting regulations that a target area prescribed therein can be encompassed within the edges of the ring sheet.
  • the ring sheet has its central portion cut away, as is the case with the sector sheet 26, so that an inner edge is formed for a zone 6'.
  • the ring sheet can be divided into concentric ring shaped area elements which are designated by scoring values, in the example 1 6.
  • the rings are insulated from one another in that strips have been cut out from the conductive sheet.
  • the base plate and guides consist of insulating material and support downwardly extending conductive strips 33 33, one for each area element of the ring sheet 28, which strips are folded from the rear side of the guides 31, round the edges of these, and are passed through slots in the base plate 30 and in the ring sheet 28 on the front side of which the strips terminate in flaps 34.
  • Insulating sheets 35, 36 respectively cover the strips on the rear sides and the inner edges of guides 31.
  • a conductive cement is applied to the flaps 34 so that each ring is electrically connected through the conductive-strips with connection members 39 in the form of riveted cable clips positioned at the lower end outside the ring sheet.
  • connection members 39 in the form of riveted cable clips positioned at the lower end outside the ring sheet.
  • the portion of the target area positioned outside ring l can be provided with an output line.
  • Corresponding output leads 40 are further connected with the sector sheet 26 which in known manner has side strips 41 that are drawn outside the target area defined by the ring sheet and extend from the upper sectors to the lower edge of the unit.
  • the insulating distance between the conductive sheets 26 and 28 is less than the length of the projectile used, a hit at every arbitrary point of the area where the ring sheet and sector sheet cover each other establishes a contact of short duration between two of said connection members and thus produces an output due to difference of potential between ring sheet and sector sheet, which output is transmitted, through a sleeve box 42 mounted on the bottom member of the frame and a multi-core cable 43 extending to the connector 15, to a register comprising logic circuits and arranged in such a way that a signal is produced for each such contact with the target, which signal unambiguously indicates the value of the shot as well as the sector position.
  • a unit II comprising a sheet 44 having conductive sectors a h, each provided with a sector strip 45 of the same material, and a centrum part 46 which here comprises an inner zone 6" of the ring 6" of the target, together with the central portion of the target, which is positioned inside the ring and divided in the usual way into area elements 7 10.
  • the conductive sheets are insulated from one another and from parts rearwards of them by means of a pair of plates of plastics 47 and 48.
  • the plastic plate 48 is provided on its back with ring strips 49 49 that have their upper ends passed through said plastic plate and through the ring sheet 46 opposite to their respective area elements and said strips, during assembly of the unit ll, have been electrically connected on the front side of the ring sheet with the area elements at the joint places designated by 50.
  • ring 10 a high value 10 or the inner-ten comprising the very center portion of the aiming dot, and here no indication of sector is required but a cut out has instead been made in the sector sheet 44 which cut out has a circular edge 51, whose diameter is so chosen that scores which shall be related to the inner ten" freely pass inside the edge.
  • a supplementing contact plate 52 positioned behind the center of the insulating plate 48 and insulated on opposite sides, which contact plate cooperates with a logic circuit indicating the failing contact with the sector sheet 44.
  • a contact strip 53 passes from the contact plate at the side of the ring band 49 to the lower edge of the insulating base.
  • the unit is protected on its rear side by an insulating sheet 57.
  • the electric connection of the target is such that the sector conductors 55 will be connected in parallel with corresponding conductors 40 of the front unit I, e.g.,
  • FIG. 4 illustrates schematically the wiring diagram for the sleeve box 42.
  • the diameter of the opening in the ring sheet 28. deter mined by the edge 29, is smaller than the diameter of the outer edge 58 of the centrum part 46 but larger than the prescribed inner diameter of ring 6;
  • the other rings of the target either are located in the unit I or in the unit II there will thus be a duplication of the ring-indicating conductive material for ring 6, which is a characterizing feature of the invention.
  • the projectiles pass through the front as well as through the rear ring sheets while a projectile that passes immediately radially inwardly of the edge 29 only passes through the zone 6" of the rear unit and a projectile that passes outside the circle ring 46 but still scores a 6 hits the zone 6' of the front unit.
  • the limits of the 6 zone, or of such other area element where it may be desirable to place the merge between the units of the target will not be affected by the division of the target, but hits penetrating such area can be scored with the same technics and with the same precision as those striking within the limits of the other rings of the target despite the fact that there is within the ring in question a physical border between the units enabling an exchange of the central part of the target.
  • That unit is adapted to fit into the space that is formed along the base 30 between the guides 31 and 32, preferably in such a way that the side edges 59 of the cemented plates 47 and 48 are fittingly guided by the guides 31 (see FIG. 2) while the upper edges 60 of the plates are adapted to engage the guide 32.
  • This position is also determined by a holding means which, like other elements within the frame 14, shall be penetrable by projectiles without being shattered and which preferably is arranged to mutually fix the rear surface of the base 30 in relation to the opposing front surface of the sector sheet 44 and the plate 47.
  • the fixing is made by means of velcro strips or similar self-fastening but detachable strip material which can be applied on the two surfaces as a pair of strip parts positioned opposite each other.
  • the drawing illustrates such fastening means applied at the guide 32 and the edge 59 as a horizontal strip 61' on the plate 30 which cooperates with a strip extending along the upper edge of the sheet 44 (inside the lug 65 of FIG. 3) as well as at the center of the target where strips 62' and 62" are fastened to respective unit.
  • the target is finished at the rear by a covering frame 63 and a rear cloth 64 stretched over the latter.
  • the covering frame 63 is first removed after which the unit II together with its cabling 54 55 and pin terminal 56 is dismounted. To release the fixing to the plate 30 a pair of freely accessible lugs 65 of the abovementioned fixing strips serving as handles are used. After a new rear unit is mounted on the front unit in the position determined by the guides the target is ready for further use.
  • the mutual position of the units seen in the shooting direction is of significance to ensure a correct ring and sector indication over the whole target area.
  • the unit I comprising the radially outer range of sensitivity of the target (the area elements l to 6' inclusive) nearest to the gunner the signalling in this whole range will be independent of which conducting strip or strips receive contact by the projectile in its continued passage through the target material since the registration on the output side will obviously be set by the first entering impulse while later erroneous impulses will be of no effect.
  • the invention is obviously not limited to the above described embodiment but comprises also target devices wherein the number of conductive sheets is more than two and the sheets have other target area divisions than rings and sectors, and comprises every other selfindicating target of the type, including a target area divided into easily separable but cooperating units.
  • a target at which electrically conductive projectiles are to be shot from a location in front of the target and which has defined scoring zones comprising a central zone within which shots are most desirably placed and a plurality of outer zones which lie at different distances outwardly from said central zone and each of which surrounds it, said target being of the type comprising a plurality of pairs of cooperating sheet-like electrically conductive elements that are penetrable by said projectiles, there being at least one of said pairs of elements for each scoring zone and the two elements of each pair being flatwise spaced apart by a distance such that a projectile can be in electrically. connecting contact with both simultaneously during its penetration of them, said target also comprising means for electrically connecting each of said pairs of elements with a scoring device that indicates the particular pair of said elements that a projectile has penetrated, said target being characterized by:
  • first flat, thin carrier means substantially permanently fixed to the frame near the front thereof and carrying pairs of said elements for an outer portion of one of said outer scoring zones and for the whole of all of the outer scoring zones farther out from the central zone than said one outer scoring zone;
  • C. second flat, thin carrier means having thereon pairs of said elements for the inner portion of said one outer scoring zone and for the whole of all scoring zones inwardly of said one outer scoring zone;
  • pairs of elements for at least one radially outer scoring zone being carried on flat, thin carrier means substantially permanently affixed to said frame rearwardly adjacent to said means defining said front surface, and said carrier means also carrying elements for the radially outer portion of a radially intermediate scoring zone;
  • each of said pairs being substantially sector shaped, extending circumferentially only partway aroundits cooperating annular element, having similar sector shaped elements spaced small distances circumferentially to its opposite sides, and extending radially across a plurality of annular elements, so that each annular element can cooperate with a plurality of sectorshaped elements and each sector-shaped element can cooperate with a plurality of annular elements to provide an indication of both the annular scoring zone penetrated by a projectile and the circumferential portion of that zone that the projectile penetrated.
  • said means for radially detachably securing said other carrier means to the frame comprising 1. rearwardly facing strips of self-adhesive material fixed to a portion of the frame, and
  • a target at which electrically conductive projectiles are to be shot said target being cooperable with a scoring device which can be located remotely from it and which responds to electrical signals from the target to produce indications of scoring results, said target being characterized by:
  • D. means electrically interconnecting the two last mentioned contact elements.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Radar Systems Or Details Thereof (AREA)
US00316033A 1971-12-23 1972-12-18 Electrical indicating target with removable center section Expired - Lifetime US3854722A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE16554/71A SE367478B (enExample) 1971-12-23 1971-12-23

Publications (1)

Publication Number Publication Date
US3854722A true US3854722A (en) 1974-12-17

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ID=20302428

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US00316033A Expired - Lifetime US3854722A (en) 1971-12-23 1972-12-18 Electrical indicating target with removable center section

Country Status (13)

Country Link
US (1) US3854722A (enExample)
JP (1) JPS5216680B2 (enExample)
AT (1) AT324175B (enExample)
BE (1) BE793285A (enExample)
CH (1) CH554530A (enExample)
DE (1) DE2261807C3 (enExample)
DK (1) DK133356B (enExample)
FR (1) FR2170538A5 (enExample)
GB (1) GB1394850A (enExample)
IT (1) IT974174B (enExample)
NL (1) NL176706C (enExample)
NO (1) NO132292C (enExample)
SE (1) SE367478B (enExample)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4244583A (en) * 1978-02-06 1981-01-13 Wood Eugene L Self scoring target for darts and similar projectiles
US4786058A (en) * 1987-06-22 1988-11-22 Baughman James S Electric target and display
US5486007A (en) * 1994-05-09 1996-01-23 High Flyte International Ltd. Automated dart board
US5516113A (en) * 1995-03-27 1996-05-14 Hodge; Robert B. Resistive matrix targeting system
US5538254A (en) * 1995-08-04 1996-07-23 Adams Mfg. Corp. Bullet trap entertainment system
US20030168812A1 (en) * 2002-03-07 2003-09-11 Mordechai Tessel Hit scoring apparatus for shooting practice
US20110248448A1 (en) * 2010-04-08 2011-10-13 Bruce Hodge Method and apparatus for determining and retrieving positional information
US10712133B2 (en) 2017-08-01 2020-07-14 nTwined LLC Impact indication system
US10731954B2 (en) 2015-05-11 2020-08-04 Automated Target Solutions, Inc. Target system and related target panels and methods
CN114280986A (zh) * 2021-12-13 2022-04-05 北京昆仑卫士智能科技有限公司 智能报靶装置
US11976904B1 (en) 2020-08-05 2024-05-07 Automated Target Solutions, Inc. Bullet detecting targets with integral calibration

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0082715A3 (en) * 1981-12-21 1984-01-11 Viragate Limited A target apparatus
DE3430552A1 (de) * 1984-08-20 1986-03-06 Immendorf, Karl Martin, Dipl.-Ing., 7770 Überlingen Praezisionsschuetzenstand

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2695173A (en) * 1950-12-09 1954-11-23 Sterne Frank Remote scoring target
US3396971A (en) * 1965-10-19 1968-08-13 Victor Comptometer Corp Archery target of bundled plastic rods
US3454277A (en) * 1967-09-12 1969-07-08 Joanell Lab Inc Polypropylene projectile-shorting target with wire screen electrodes
US3499651A (en) * 1967-02-23 1970-03-10 Joseph W Hubbard Target with automatically terminating visual indicator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2695173A (en) * 1950-12-09 1954-11-23 Sterne Frank Remote scoring target
US3396971A (en) * 1965-10-19 1968-08-13 Victor Comptometer Corp Archery target of bundled plastic rods
US3499651A (en) * 1967-02-23 1970-03-10 Joseph W Hubbard Target with automatically terminating visual indicator
US3454277A (en) * 1967-09-12 1969-07-08 Joanell Lab Inc Polypropylene projectile-shorting target with wire screen electrodes

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4244583A (en) * 1978-02-06 1981-01-13 Wood Eugene L Self scoring target for darts and similar projectiles
US4786058A (en) * 1987-06-22 1988-11-22 Baughman James S Electric target and display
US5486007A (en) * 1994-05-09 1996-01-23 High Flyte International Ltd. Automated dart board
US5613685A (en) * 1994-05-09 1997-03-25 High Flyte International, Ltd. Automated dart board
US5516113A (en) * 1995-03-27 1996-05-14 Hodge; Robert B. Resistive matrix targeting system
US5538254A (en) * 1995-08-04 1996-07-23 Adams Mfg. Corp. Bullet trap entertainment system
US20030168812A1 (en) * 2002-03-07 2003-09-11 Mordechai Tessel Hit scoring apparatus for shooting practice
US20050212216A1 (en) * 2002-03-07 2005-09-29 Mordechai Tessel Hit scoring apparatus for shooting practice
US6994347B2 (en) * 2002-03-07 2006-02-07 Mordechai Tessel Hit scoring apparatus for shooting practice
US20110248448A1 (en) * 2010-04-08 2011-10-13 Bruce Hodge Method and apparatus for determining and retrieving positional information
US10731954B2 (en) 2015-05-11 2020-08-04 Automated Target Solutions, Inc. Target system and related target panels and methods
US10712133B2 (en) 2017-08-01 2020-07-14 nTwined LLC Impact indication system
US11976904B1 (en) 2020-08-05 2024-05-07 Automated Target Solutions, Inc. Bullet detecting targets with integral calibration
CN114280986A (zh) * 2021-12-13 2022-04-05 北京昆仑卫士智能科技有限公司 智能报靶装置

Also Published As

Publication number Publication date
GB1394850A (en) 1975-05-21
BE793285A (fr) 1973-04-16
NL176706B (nl) 1984-12-17
DE2261807B2 (de) 1974-11-21
IT974174B (it) 1974-06-20
AT324175B (de) 1975-08-25
FR2170538A5 (enExample) 1973-09-14
DK133356B (da) 1976-05-03
NO132292C (enExample) 1975-10-15
DK133356C (enExample) 1976-09-27
DE2261807A1 (de) 1973-06-28
NL7217512A (enExample) 1973-06-26
DE2261807C3 (de) 1975-07-03
JPS5216680B2 (enExample) 1977-05-11
NL176706C (nl) 1985-05-17
NO132292B (enExample) 1975-07-07
CH554530A (de) 1974-09-30
JPS4873000A (enExample) 1973-10-02
SE367478B (enExample) 1974-05-27

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