Title:
MULTIPLE SIGHT FOR ACHER'S BOW
United States Patent 3670422
Abstract:
Multiple sight for an archer's bow having a vertically elongated window in which are disposed a vertical cross-hair wire and a plurality of horizontal cross-hair wires, the ends of said wires being carried by mounting means individually adjustable for a "fine" setting of each wire. Threaded passages along the sides of the window are provided in the body of the sight and each wire end mounting and holding means is threaded therein. The horizontal wire holding elements further include means engageable by the working tip end of a turning tool and said engageable means also permits passage of a reduced shank of the tool through the holding elements for access to and adjustment of other elements in the same passage.
Inventors:
Stebbins, Herve A. (Springfield, MA)
Stebbins, John A. (Springfield, MA)
Application Number:
05/121741
Publication Date:
06/20/1972
International Classes:
F41G1/467; F41G1/00; (IPC1-7): F41G1/00; F41B5/00
Field of Search:
33/46A 124
Primary Examiner:
Forman, Leonard
Assistant Examiner:
Stephan, Steven L.
Claims:
What is claimed is
1. Multiple sight for an archer's bow comprising
2. The structure of claim 1, in which
3. The structure of claim 1, in which
4. The structure of claim 3, in which said threaded means are set screws having wrench sockets of the same configuration as said bores of the horizontal cross-hair wire mounting elements.
5. The structure of claim 4, in which
6. The structure of claim 5, in which
Description:
BACKGROUND OF THE INVENTION
This invention relates to multiple sighting devices for archer's bows and in particular to improvements in the type of multiple sight exemplified by prior U.S. Pat. No. 3,136,063 granted June 9, 1964. As disclosed therein the sight is provided with a vertical cross-hair wire disposed in a vertically elongated window opening with a plurality of horizontal cross-hair wires adjustably fixed in matching grooves at various elevations along each side of the window to provide multiple cross-hair sights for aiming at targets at various distances from a shooter. The wires are held by a strap means at selected elevations to suit an individual shooter's habits or style in handling the particular bow either for hunting or target shooting.
A principal object of the present invention is to provide a construction in which a shooter may readily vary or adjust the cross-hair sighting wires to alter the position of the intersecting wires while in the field and without the need for partially or fully dismantling any portion or portions of the assembly. An additional object is to provide sight mechanism for an individual "fine" adjustment of all cross-hair wires and consequently to enable a shooter to obtain a greater degree of precision and accuracy.
SUMMARY OF THE INVENTION
In a preferred embodiment of the invention a rectangular plate member comprises the body of the device in which a vertically elongated viewing window is provided. A vertical wire and series of vertically spaced horizontal wires extend across the window opening to form the series of cross-hair sighting means for a shooter, the device being mounted on a bow so that the window lies upwardly of the arrow rest portion thereof. In the body of the sight parallel threaded passages are formed along opposite sides of the window adjacent the edges thereof, each passage having a slotted connection with its adjacent edge. In these passages, preferably extending entirely through the sight body, are threaded suitable wire end mounting means each of which is thus individually adjustable to arrange the wires in the exact position desired by a shooter. There being only the single vertical cross-hair wire the mounting means for each end of this wire may comprise Allen set screw means accessible for adjustment by inserting a turning tool through the opposite ends of the pair of upper and lower threaded passages. However, the end of each horizontal cross-wire is held by a threaded adjusting element having an annular groove receiving a looped wire end for relative rotation of the element in a passage. Each of these elements is also provided with a longitudinal through bore of polygonal shape so that a turning tool having a tip in the shape of an Allen set screw wrench and a reduced shank may engage the bore and turn the element of its tip, or, pass through it to engage the tip in the bore of another element in the same passage for turning the latter element without affecting the position of any element or elements through which the reduced shank may extend. Thus, any of the individual wires may be easily adjusted in a precise manner by the insertion of a simple Allen set screw wrench tool.
The above and other particular advantages and objects of the present invention will be apparent from the following description of an embodiment thereof as shown by the accompanying drawings.
DRAWINGS
FIG. 1 is a fragmentary front view showing the central section of a bow with a multiple sight device embodying the present invention mounted thereon;
FIG. 2 is a side elevation of the assembly of FIG. 1;
FIG. 3 is a front plan view of the sighting device of FIG. 1 indicating in dotted lines show threaded passages therein with portions being cut away to show the adjustable mounting means for the sighting wires;
FIG. 4 is a detail view on an enlarged scale showing the mounting at one end of the vertical cross-hair wire;
FIG. 5 is a transverse sectional view of a horizontal cross-hair wire mounting element;
FIG. 6 is a detail view showing the mounting at one end of a horizontal cross-hair wire; and
FIG. 7 is a plan view of an Allen wrench used for adjusting the wire mountings in the new device.
In the drawings, FIGS. 1 and 2, the central section 2 of a bow is shown with a conventional open sided notch at 4 above a hand grip portion at 6. An arrow rest is at 8 at the bottom of notch 4. Mounted to lie forwardly and upwardly of the notch is the multiple sight device 10 fixed on the bow as by the mounting screws at 12. A vertically elongated viewing window 14 is provided above the arrow rest, a vertical sighting wire 16 and multiple horizontal wires 18 being adjustably positioned in the window to provide a series of cross-hair sighting means.
As seen by FIG. 2 the multiple sight 10 is mounted at its upper end on a spacer block as at 20. As will be apparent, various vertical positioning relationships may accordingly be available to suit an individual shooter's preference merely by varying the dimension of the block 20 in the initial installation of a sight. It may also be noted that the lower notched edge of the device as at 22 is elevated above the arrow rest 8 in relatively closely spaced relationship. A lowermost horizontal sighting wire 18 may thus be set fairly close to the rest 8 and provide for sighting a relatively distant target. An angled upper feather guide piece at 24 is provided in the notch 4 above the rest to protect the feathers of an arrow from striking the edge 22 and being damaged thereby when passing below the edge.
In FIG. 1 six horizontal cross wires are shown for that number of cross-hair sighting means. While six or any other number of wires may be used for sighting targets at various distances as may be desired by an individual shooter, the viewing window as disclosed with six sights is, generally speaking, designed for targets within a range of 30 to 180 feet from the shooter, a suitable spacing between the horizontal wires being available for targets at increments of approximately 30 feet each. The mounting of the sight and wires will now be described in detail.
With reference to FIG. 3 and FIGS. 4-7, the body of the plate member 10 is provided with various through passages for adjustment purposes. As seen in FIG. 3, a rough sight mounting adjustment means is provided by which the body may be shifted as a whole. Upper and lower horizontal through passages 26 and 28 at the top in the bottom offset, respectively, are shown with mounting slots 30 intersecting the same for receiving the stem of the screws 12. Set screws 32 are threaded in the passages at each side of the stem. When initially mounting the sight, screws 12 can be somewhat loosely secured and the set screws then turned against opposite sides of the shank to position the window 14 of the sight into the position desired. The screws 12 cab then be tightened to anchor the plate. The set screws 32 are turned as by an Allen wrench engaging sockets in the outer ends of the screws. Slots 30, of course, provide for subsequent rough adjustment within limits merely by backing off screws 12, adjusting the position of the opposing set screws 32 to shift the window as desired, and again anchoring screws 12.
Adjacent the lateral side edges of the viewing window 14 are parallel vertical through passages at 34. Each passage is connected with the adjacent edge of the window by slotted passages indicated at 36. Parallel horizontal through passages at 38 extend along the top and bottom edges of the window communicating with the adjacent edges as by slotted passages at 40 (FIGS. 3 and 4). A slotted passage 42 below the lower passage 38 is aligned with slot 40 and is open to the exterior at the lower edge of member 10.
Through passages 34 are threaded to receive mounting means for adjustably holding opposite ends of the horizontal cross-hair wires 18. Through passages 38 are similarly threaded to receive mounting means for adjustably holding the vertical cross-hair wire 16. Slot 42 at the bottom edge provides an entrance for the initial installation of, or the replacement of, wires 16 and 18 in the assembly.
Referring to FIG. 4 the adjustable mounting for the upper end of the vertical cross-hair wire 16 is shown. It will be noted this end is seated in opposite sides of cylindrical wall of a tubuler holder 44. The wire tip is anchored in place as shown by two set screws 46 threaded in opposite ends of the cylindrical interior and pinching the end portions between them. The tubular holder 44 is slidable in passage 38 and held between two set screw members 48 threaded in the passage 38 from each end. A hex through bore 50 is provided in each of the set screws 48 for turning the same in the passage 38. The bore also provides entrance for passage of a turning tool of reduced cross section to fit a socket at 52 to turn the holder set screws 46. As will be apparent set screws 48 may be advanced or backed off for adjusting and setting the position of the upper end of the vertical wire 16. In lower passage 38 the lower end of wire 16 is similarly secured by an identical tubular holder 44 and adjustable set screws 48 (see FIG. 1).
In fixing wire 16 in the assembly one set screw 48 is threaded into an approximate position in the upper passage 38, the tubular holder 44 dropped in against it and the opposite set screw 48 then threaded in place to locate the holder 44 between them. After the horizontal wires have been assembled as will be described, a holder 44 and set screws 48 of the lower passage 38 are likewise assembled therein. Wire 16 may then be inserted from the bottom through the opposed openings of the lower holder 44 to extend upwardly and then be secured as described at its upper end in the top holder 44 whereupon the lower wire end may be anchored between set screws 46 of holder 44.
Each of the horizontal cross-hair wires is mounted at its ends as best shown by FIGS. 5 and 6. A threaded mounting element 54 is provided with a central annular groove 56 around which a looped end 58 of the wire 18 is wrapped and held for relative rotation of the member 54. Element 54, furthermore, has a longitudinal central passage 60 of hex formation in which the hex head 62 of a suitable turning tool (FIG. 7) having a stem 64 of reduced cross section may be engaged to adjust the same. The opposite end of each wire 18 is similarly mounted on an element 54 and as will be apparent a pair of members 54 supporting a wire 18 between them may be initially mounted by progressively advancing the elements in opposite passages 34, the wire 18 passing upwardly through slot 42, lower passage 38, the lower slot 40 and into the opening of window 14.
As will be appreciated the horizontal wires 18 must be positioned in the window prior to assembly of the set screws 48 and tubular holder 44 in the lower passage 38. It may also be noted that the dimensional formation of the slotted passages 40 and 36 joining the through passages with the edges of the window or the mounting of the wires 16 and 18 at the ends thereof, or both, is preferably such as to enable wire 16 to be slightly offset from the plane of the series of wires 18. Thus movement of any wire for adjustment purposes may be accomplished without in any way flexing the wire set in crosswise relation to it.
In adjusting the horizontal wires the head 62 of the tool shown by FIG. 7 may be inserted to engage the hexagonal bore of any of the mounting members 54 in each passage 34. As indicated head 62 may also pass completely through one or more of the members 54, the reduced shank 64 thus being freely rotatable in one or more of the bores 60 so as to turn only the inwardly located member 54 in which the head is engaged.
It will be apparent from the above description that the present construction enables a "fine" adjustment of each cross-hair wire individually in order to accommodate a shooter's habits, style, physical ability, and any other factors affecting the use of a bow such as a cross wind, moisture, or temperature conditions. Such sighting corrections will assist accuracy in any type of shooting, and most particularly in the case of tournament shooting a high degree of precision is available for the shooter in providing the means to quickly make even hairline adjustments for sighting in a target.