US3648376A

US3648376A - Bow sight

Info

Publication number: US3648376A
Application number: US2543A
Authority: US
Inventors: William J Millnamow
Original assignee: Individual
Current assignee: Individual
Priority date: 1970-01-13
Filing date: 1970-01-13
Publication date: 1972-03-14
Anticipated expiration: 1989-03-14

Abstract

A sighting device for archery bows consisting of a guide rail mounted at its upper and lower ends in spaced relation to an upper bow section with one end of the guide rail adjustable relative to its spacing from the bow section. Adjustably mounted on the guide rail for up and down movement thereon is a sighting unit including a carriage secured to the guide rail by a clamping action. A sighting member support bar is mounted at one side of the carriage for lateral movement to selected adjusted positions, being supported on the carriage by a guide pin and a control pin. Manually operated means on the carriage connected to the control pin moves the support bar to an adjusted selected position. The support bar has affixed to its top surface a sighting member consisting of a tube with crosshairs on the rear end of a rod, the front end of the rod having a raised ball that is in visual alignment with the intersecting axis of the crosshairs.

Description

llnitd States Patent Millnamow [72] Inventor: William J. Millnamow, 9 Hausman Street,

Brooklyn, NY. 11222 122 Filed! Jan. 13, 1970 21 Appl.No.: 2,543

[52] US. Cl. ..33/46 A [51] llnt. Cl ..F41g1/00, F41b 5/00 [58] Field of Search ..33/46 A [56] References Cited UNITED STATES PATENTS 3,488,853 1/1970 Alti 33/46 A 2,562,187 7/1951 Hamm ..33/46 A Primary Examiner-Leonard Forman Assistant Examiner-Steven L. Stephan Atz0rneyCarl Miller [5 7] ABSTRACT A sighting device for archery bows consisting of a guide rail mounted at its upper and lower ends in spaced relation to an upper bow section with one end of the guide rail adjustable relative to its spacing from the bow section. Adjustably mounted on the guide rail for up and down movement thereon is a sighting unit including a carriage secured to the guide rail by a clamping action. A sighting member support bar is mounted at one side of the carriage for lateral movement to selected adjusted positions, being supported on the carriage by a guide pin and a control pin. Manually operated means on the carriage connected to the control pin moves the support bar to an adjusted selected position. The support bar has affixed to its top surface a sighting member consisting of a tube with crosshairs on the rear end of a rod, the front end of the rod having a raised ball that is in visual alignment with the intersecting axis of the crosshairs.

7 Claims, 5 Drawing Figures BOW SIGHT This invention relates to sighting devices for use with archery long bows and has for its primary object to provide an improved sight device that is adjustable both lengthwise of the bow as well as laterally for increased or decreased ranges and for the effect of windage.

Another object of this invention is to provide a guide rail mounted in spaced substantially vertical relation on the rear side of the upper bow section on which guide rail the sighting unit of the sight device is adjustable up or down to a selected position.

A further object of the invention provides for adjusting one end of the guide rail to vary its spaced position from the rear side of the upper bow section.

Yet another object of this invention is to provide a sighting unit embodying a carriage supported by the guide rail and adjustable up or down thereon by a manually operable clamping cam.

Still another object of this invention is to provide on the carriage a laterally adjustable sighting member support bar that is movably supported by a guide pin and a control pin both extending horizontally into the body of the carriage, the carriage carrying a manually operable adjusting screw and knob operatively associated with the control pin to effect a selected lateral adjustment of the support bar.

Another object of this invention is to provide a sighting member mounted on the top side of the support bar embodying an elongated rod carrying at its rear end a tubular sight including crosshairs and at its forward end an elevated ball element which will lie in the axial intersection of the crosshairs within the tubular sight.

Further objects of the invention will appear as the description proceeds.

To the accomplishment of the above and related objects, my invention may be embodied in the form illustrated in the accompanying drawings, attention being called to the fact, however, that the drawings are illustrative only, and that change may be made in the specific construction illustrated and described within the scope of the appended claims.

FIG. 1 is a partial side elevational view of an archery bow with the complete sighting device mounted thereon.

FIG. 2 is a plan view of the sighting unit.

FIG. 3 is a detail sectional view taken on line 3-3, FIG. 2.

FIG. 4 is a rear end elevational view of the sighting unit.

FIG. 5 is a detailed cross-sectional view taken on line 55, FIG. 4.

Referring now to the drawings in greater detail there is shown the archery bow sight device of the present invention, generally indicated by the reference numeral mounted on the upper bow section 12 adjacent to the handgrip section 14.

The bow sight device is seen to consist of a vertical guide rail 16 formed of a substantially rigid metal strap having its upper end 13 turned 90 to the plane of the rail 16 and having a bolt-receiving opening (not shown) centrally provided therein. An upper bracket 20 having a base 21 and an integral rearwardly extending flat bracket arm 22 is secured to the rear side 23 of the upper bow section 12 by one or more screws 24. The bracket arm is provided with a horizontal slot 26 and the upper end 18 of guide rail 16 is fixedly secured in adjusted position to the bracket arm by the bolt 28 which passes through the opening in upper end 18 and slot 26. A knurled nut or wingnut with a washer element (not shown) acts to securely clamp the upper end 18 to bracket arm 22.

Secured below upper bracket 20 to the lower widened portion 30 of the upper bow section 12 and adjacent to the hand grip section 14 is a lower bracket 32. The lower bracket 32 consists of a base 33 and an integral rearwardly extending cylindrical arm 34 provided with an axial threaded extension 35. The base 33 of lower bracket 32 is secured at a selected point to widened portion 30 by one or more screws 36. Guide rail 16 at its lower end 37 is provided with an opening (not shown) permitting the lower end 37 to seat on the axial threaded extension which extends through the opening therein. The terminal end of the cylindrical arm 35 is formed arcuate as at 38 and a knurled nut 40 provided with a short shank or protuberance correspondingly arcuate at its terminal end as at 41, clamps the lower end 37 of the guide rail 16 to the arm 34, as seen in FIG. 1. It is to be noted that the arcuate ends 38 of

arm

34 and 41 of knurled nut 40 will accommodate pivotal movement of the guide rail 16 when the upper end thereof is adjusted along bracket arm 22 to a selected fixed position spaced from the rear side 23 of the upper bow section 12. The bolt receiving opening for bolt 28 at the upper end of the guide rail 16 is of a slightly elongated form to permit adjustment of the upper end of the guide rail along the bracket arm 22. The guide rail 16 has a radial length corresponding to the draw length of the archers arrow and is a rigid member.

Mounted on the guide rail 16 is a sighting unit 42. The sighting unit 42 consists of a carriage 44 formed as a solid rectangular block 45 provided with a pair of forwardly extending

parallel arms

46, 47 coextensive with the sides of the block, as seen in FIGS. 3 and 5. The right side of the carriage block 45, viewing FIG. 2 and FIG. 5, is provided with a lateral extension 48 located adjacent the rear end of the right side opposite arm 47. Provided in the carriage block body 45 is a forward transverse guide pin opening 50 extending completely therethrough. Rearward of pin opening 50 there is provided a transverse control pin opening 52 located axially of extension 48, therebeing a partition wall 53 disposed substantially centrally of extension 48 within pin opening 52. Preferably the portion of pin opening 52 on the other side of partition 53 is of a slightly greater diameter, for a purpose to be hereinafter described. As seen in FIG. 3,

pin openings

50, 52 have their axis horizontal and coplanar.

Extending through opening 50 is a guide pin 55 provided with an axial threaded opening 56 to receive a screw 57, see FIG. 5. Fitted in opening 52 is a control pin 60 having an axial threaded opening 61 extending completely therethrough. Corresponding ends 62, 63 respectively of the guide pin 55 and control pin 60 are flat and normal to the axis of the pins. Secured in abutting engagement to the flat ends 62, 63, respectively, of guide pin 55 and control pin 60 is a sight support bar 65 provided with transverse screw receiving openings adapted to register with threaded

openings

56, 61. Screw 57 secures the sight support bar to guide pin 55 and screw 67 secures the same to control pin 60, as clearly shown in FIG. 5. It will be noted that

pins

55, 60 are slidably axially movable as a unit in their

respective openings

50, 52 by virtue of the rigid connection effected by the sight support bar 65. Partition 53 in opening 52 if formed with an axial opening 69 through which a control screw 70 extends and threadedly fitted into threaded opening 61 of the control pin 60. Control screw 70 is integral with a cylindrical bearing 72 that slidably rotates in enlarged diameter portion 54 of opening 52, the boss 72 being in turn integral with a knurled knob 74. Boss 72 is provided with an annular groove 75 into which extends the lower end of a retaining pin 76 threaded fitted on the carriage block extension 48, see FIGS. 2 and 3, for holding the boss 72 against axial movement while permitting rotation thereof. The retaining pin 76 is preferably provided with a handle 77 to turn the same so as to lock the boss 72 against any movement after adjustment has been made. It is thus seen that rotation of knob 74 in one or the other direction will cause control screw 70 to move in or out of threaded opening 61 to impart axial movement to control pin 60 so as to laterally move the sight support bar 65 towards or away from the carriage 44, this lateral movement being insured by the guide pin 55 as is readily ap parent.

Disposed between the

arms

46, 47 of the carriage 44 is a cam 80 mounted on a shaft 81 provided. with a handle 32. The shaft 81 extends through

openings

83, 84 provided respective ly in

arms

46, 47 and is formed centrally with a flattened surface 85. A setscrew 86 in the cam 80 serves to lock the cam to the camshaft, the end of setscrew 86 abutting the flattened surface 85.

Mounted on the sight support bar 65 is a sighting member 90 consisting of a rod 91 having an elevated small ball member 92 vertically spaced from rod 91 at its forward end, as seen in FIG. 1. Mounted rigidly on the rear end of the rod 91 is a tubular sight 93 provided with the crosshairs 94, the sight having the customary lenses (not shown) at each end thereof to protect the crosshairs and if desired to produce a telescopic effect. It will be noted that the ball 92 when looking through the sight 93 will be exactly at the axial center of the sight 93 as indicated by the intersection of the crosshairs 94, as seen in FIG. 4. The rod 91 is held in adjusted clamped relation on the sight bar by a clamping plate 96 and screw 97.

The sighting unit 42 is supported on the guide rail 16 by having the latter extending through the slot 100 defined by the

arms

46, 47 and cam 80 and may be adjustably moved up and down thereon and gripped or clamped in selected position by turning the cam 80 which will clamp the carriage 44 to the guide rail 16. The mounting of the sighting unit 42 on the guide rail 16 is such that the sighting member 90 with its rod 91 is horizontal when the bow is held vertical as shown in FIG. 1. The sighting unit 42 is adapted for a quick range change by operating the lever handle 82 to release the gripping action of the cam so as to permit ready adjustment of the sighting unit on the guide rail and still give stability when its position is fixed, therefore eliminating slipping when the bow string is released. The advantage of windage control or side movement is obtained by turning the windage knob 74 thereby moving the sighting bar 65 and its supported sighting member 90 either to the left or right. As hereinabove described the sighting unit assembly rides on guide pin 55 and control pin 60 supported by carriage 44 and is locked in position by retaining pin 76.

The advantage of the bow sight as described above and illustrated would be to hold the bow in the same position each time the arrow is fired. By eliminating twisting and keeping the bow vertical will increase the archers accuracy.

What I claim is:

1. A bow sight for an archers bow having a central handgrip section and upper and lower bow sections, comprising:

a. an elongated guide rail located in substantially vertical spaced relation to the rear side of the upper bow section,

b. lower means fixedly securing the lower end of the guide rail in spaced relation to said rear side of the upper bow section and adjacent to the handgrip section,

c. upper means adjustably securing the upper end of the guide rail in selected spaced relation to said rear side of the upper bow section,

d. a sighting unit mounted on said guide rail for adjustable up or down movement thereon, and

e. and gripping means forming a part of said sighting unit for clamping the latter to said guide rail at any selected position thereon,

wherein:

f. said guide rail is a metal strap, g. said lower securing means comprising a bracket having;

a. a base secured to the rear side of the upper bow section,

b. an arm rigid with said base, and

c. releasable fastening means fixedly securing the lower end of said guide rail to the free terminal end of said arm, h. said upper securing means comprising a bracket having;

a. a base secured to the rear side of the upper bow section,

b. a slotted arm rigid with said base, and

c. releasable fastening means extending through the upper end of said guide rail and the slot in said arm for adjustably securing said upper end in a fixed selected position on said slotted arm spaced from said rear side of the upper bow section,

wherein said sighting unit comprises:

i. a carriage mounted on said guide rail,

j. said gripping means constituting a rotatable cam on said carriage,

k. manually actuated means fixed to said cam for turning the same into gripping action with said guide rail,

whereby said cam may be released by turning the cam in one direction to permit vertical adjustment of the carriage on said guide rail and rotated in the opposite direction to effect its gripping action thereon to lock said carriage in its selected position on said guide rail,

and including:

l. a pair of spaced parallel arms extending forwardly of said carriage,

m. a shaft rotatably supported by said arms,

n. said cam being mounted on said shaft between said arms,

0. releasable means securing said cam to said shaft,

p. means on one end of said shaft for rotating the same, and

q. there being a space between said cam and a part of said carriage between said parallel arms through which said guide rail extends,

whereby rotation of said cam in the direction to efiect its gripping action will clamp the guide rail to said part of said carriage such as to support the carriage in its adjusted position on said guide rail.

2. The bow sight of claim 1, including:

a. a sight support bar parallel to one side of said carriage,

b. there being a pair of horizontal coplanar openings in said carriage transversely thereof.

c. a guide pin fixedly secured to a side of the sight support bar opposite said one side of said carriage and extending through one of said horizontal openings,

d. a control pin fixedly secured to the same side of said sight support bar and extending into the other of said horizontal openings,

e. rotatable hand manipulated means carried by said carriage on the other side of said carriage, and

f. threaded interengaging means connecting said control pin with said rotatable hand manipulated means whereby rotation of the same in one or the other direction will laterally move said sight support bar towards or away from said carriage.

3. The bow sight of claim 2, including:

a. a sighting member mounted on said sight support bar comprising;

a. an elongated rod element,

b. a tubular sight having crosshairs therein mounted on rear end of said rod,

c. a ball element mounted on the front end of said rod such that when sighting through the tubular sight the ball element will appear at the axial intersection of said crosshairs, and

b. clamping plate means securing said elongated rod element adjacent the tubular sight to the top side of said sight support bar,

whereby lateral adjustment of the sight support bar will adjust the sighting member with reference to the upper bow section for windage control.

4. The bow sight of claim 3, wherein:

a. said control pin is provided with an axial threaded opening forming one part of said threaded interengaging means,

b. a lateral extension on said other side of said carriage in line with the opening therein receiving said control pin,

c. said latter opening extending through said lateral extension,

d. a partition wall having an axial opening located in said lateral extension spaced inwardly from the free terminal end of said lateral extension,

e. a threaded rod extending through the opening in the partition wall in threaded engagement with the axial threaded opening in the control pin and forming the other part of said threaded engaging means, and

f. said rotatable hand manipulated means being mounted in the part of the opening in the lateral extension adjacent the terminal end thereof, and

g. said threaded rod being rigidly connected to said rotatable hand manipulated means. 5. The bow sight of claim 4, wherein said rotatable hand manipulated means comprises:

a. a cylindrical bearing mounted in said part of the opening 5 fected.

7. The bow sight of claim 6, wherein said hand held means comprises:

a. a knurled knob fixed to the outer terminal end of said cylindrical bearing,

b. said part of the opening in the lateral extension being of enlarged diameter as compared to the diameter of the opening receiving the control pin, and

c. said cylindrical bearing being of a diameter having rotating bearing engagement with said enlarged diameter opening,

d. the inner terminal end of said cylindrical bearing slidably engaging said partition wall, and

. the outer end portion of said cylindrical bearing projecting outwardly beyond the tenninal free end of said lateral extension.

Claims

1. A bow sight for an archer''s bow having a central handgrip section and upper and lower bow sections, comprising: a. an elongated guide rail located in substantially vertical spaced relation to the rear side of the upper bow section, b. lower means fixedly securing the lower end of the guide rail in spaced relation to said rear side of the upper bow section and adjacent to the handgrip section, c. upper means adjustably securing the upper end of the guide rail in selected spaced relation to said rear side of the upper bow section, d. a sighting unit mounted on said guide rail for adjustable up or down movement thereon, and e. and gripping means forming a part of said sighting unit for clamping the latter to said guide rail at any selected position thereon, wherein: f. said guide rail is a metal strap, g. said lower securing means comprising a bracket having; a''. a base secured to the rear side of the upper bow section, b''. an arm rigid with said base, and c''. releasable fastening means fixedly securing the lower end of said guide rail to the free terminal end of said arm, h. said upper securing means comprising a bracket having; a''. a base secured to the rear side of the upper bow section, b''. a slotted arm rigid with said base, and c''. releasable fastening means extending through the upper end of said guide rail and the slot in said arm for adjustably securing said upper end in a fixed selected position on said slotted arm spaced from said rear side of the upper bow section, wherein said sighting unit comprises: i. a carriage mounted on said guide rail, j. said gripping means constituting a rotatable cam on said carriage, k. manually actuated means fixed to said cam for turning the same into gripping action with said guide rail, whereby said cam may be released by turning the cam in one direction to permit vertical adjustment of the carriage on said guide rail and rotated in the opposite direction to effect its gripping action thereon to lock said carriage in its selected position on said guide rail, and including: l. a pair of spaced parallel arms extending forwardly of said carriage, m. a shaft rotatably supported by said arms, n. said cam being mounted on said shaft between said arms, o. releasable means securing said cam to said shaft, p. means on one end of said shaft for rotating the same, and q. there being a space between said cam and a part of said carriage between said parallel arms through which said guide rail extends, whereby rotation of said cam in the direction to effect its gripping action will clamp the guide rail to said part of said carriage such as to support the carriage in its adjusted position on said guide rail.

2. The bow sight of claim 1, including: a. a sight support bar parallel to one side of said carriage, b. there being a pair of horizontal coplanar openings in said carriage transversely thereof. c. a guide pin fixedly secured to a side of the sight support bar opposite said one side of said carriage and extending through one of said horizontal openings, d. a control pin fixedly secured to the same side of said sight support bar and extending into the other of said horizontal openings, e. rotatable hand manipulated means carried by said carriage on the other side of said carriage, and f. threaded interengaging means connecting said control pin with said rotatable hand manipulated means whereby rotation of the same in one or the other direction will laterally move said sight support bar towards or away from said carriage.

3. The bow sight of claim 2, including: a. a sighting member mounted on said sight support bar comprising; a''. an elongated rod element, b''. a tubular sight having crosshairs therein mounted on rear end of said rod, c''. a ball element mounted on the front end of said rod such that when sighting through the tubular sight the ball element will appear at the axial intersection of said crosshairs, and b. clamping plate means securIng said elongated rod element adjacent the tubular sight to the top side of said sight support bar, whereby lateral adjustment of the sight support bar will adjust the sighting member with reference to the upper bow section for windage control.

4. The bow sight of claim 3, wherein: a. said control pin is provided with an axial threaded opening forming one part of said threaded interengaging means, b. a lateral extension on said other side of said carriage in line with the opening therein receiving said control pin, c. said latter opening extending through said lateral extension, d. a partition wall having an axial opening located in said lateral extension spaced inwardly from the free terminal end of said lateral extension, e. a threaded rod extending through the opening in the partition wall in threaded engagement with the axial threaded opening in the control pin and forming the other part of said threaded engaging means, and f. said rotatable hand manipulated means being mounted in the part of the opening in the lateral extension adjacent the terminal end thereof, and g. said threaded rod being rigidly connected to said rotatable hand manipulated means.

5. The bow sight of claim 4, wherein said rotatable hand manipulated means comprises: a. a cylindrical bearing mounted in said part of the opening in the lateral extension, b. said threaded rod being rigidly connected axially to said cylindrical bearing, and c. hand held means fixed to said cylindrical bearing for rotating the same.

6. The bow sight of claim 5, including: a. an annular groove in said cylindrical bearing, and b. a threaded retainer pin on said lateral extension projecting into said annular groove for preventing axial movement of the cylindrical bearing and its threaded rod while permitting rotation thereof and operative to lock the cylindrical bearing against rotative movement when selected adjustment of said threaded rod has been effected.

7. The bow sight of claim 6, wherein said hand held means comprises: a. a knurled knob fixed to the outer terminal end of said cylindrical bearing, b. said part of the opening in the lateral extension being of enlarged diameter as compared to the diameter of the opening receiving the control pin, and c. said cylindrical bearing being of a diameter having rotating bearing engagement with said enlarged diameter opening, d. the inner terminal end of said cylindrical bearing slidably engaging said partition wall, and e. the outer end portion of said cylindrical bearing projecting outwardly beyond the terminal free end of said lateral extension.