Combination of arrow having nock means and arrow release mechanism

• US 4,151,825 A
• Filed: 03/12/1976
• Issued: 05/01/1979
• Est. Priority Date: 03/12/1976
• Status: Expired due to Term

• Current Assignee: Thomas H. Cook
• Original Assignee: Thomas H. Cook
• Inventors: Cook, Thomas H.
• Primary Examiner(s): Pinkham, Richard C.
• Assistant Examiner(s): Browne, William R.
• Application Number:
  US05/666,484
• Time in Patent Office: 1,145 Days
• Field of Search: 124/90, 124/91, 124/23 R, 124/24 R, 124/86, 124/35 A, 124/40, 273/106.5 C
• US Class Current: 124/35.2
• CPC Class Codes: F41B 5/1415 Nocking points
• CPC Class Codes: F41B 5/1469 Bow-string drawing or releasing devices F41B5/1473 takes precedence

Abstract

An arrow release mechanism having opposed pivotal jaws with substantially hemispherical sockets on facing sides for releasable reception of a substantially spherical arrow nock. One embodiment includes a pivotal trigger for locking and unlocking the jaws in their nock grasping position and a universally coupled handle. A second embodiment includes two linkage members for locking and unlocking the jaws.

Claims

1. A hand-held arrow release mechanism and an arrow having an arrow nock coupled thereto which nock is received on a bowstring, the combination comprising:

an arrow having an arrow nock coupled thereto, said nock having a cam surface thereon which cam surface faces the forward tip of said arrow, diverges outwardly from the longitudinal axis of said arrow and extends rearwardly of said arrow along the longitudinal axis thereof; and

a release mechanism comprising

a central body member having a hand grasping portion;

a pair of opposed jaws, each having a recess on facing sides thereof, the forward portion of each recess being in the form of a cam follower surface corresponding to part of said cam surface on said nock;

means for pivotally mounting said jaws to said body member;

means for biasing said opposed jaws toward each other into a grasping position in which said cam surface portion of said nock contacts said cam follower surfaces of the recesses;

locking means for locking said jaws together in the grasping position thereby locking said nock between said jaws; and

manually activated means, coupled to said locking means, for releasing said locking means thereby allowing said nock cam surface to move forward along said cam follower surfaces under the influence of the bowstring pulling on said nock so said jaws are pivoted outwardly of the grasping position by the moving nock cam surface, thereby releasing said nock and arrow therefrom.

2. The combination according to claim 1, wherein

each of said recesses is substantially hemispherical in shape.

3. The combination according to claim 1, wherein

each of said jaws includes an indentation,

said manually activated means includes a trigger pivotally coupled to said central body member, and

said locking means includes two ears extending from said trigger for releasable engagement with said indentations.

4. The combination according to claim 1, and further including

means, coupled to said body member, for moving said jaws open to readily receive the nock therebetween.

5. The combination according to claim 4, wherein

said manually activated means includes a trigger pivotally coupled to said central body member and

said means for moving comprises a cam coupled to said trigger and a cam follower formed on each of said jaws.

6. The combination according to claim 1, wherein

said central body member includes means for universally coupling said hand-grasping portion thereto.

7. A release mechanism according to claim 6, wherein

said means for universally coupling comprises a socket formed in said central body member and a ball receivable in said socket and coupled to said hand-grasping portion.

8. A release mechanism according to claim 6, wherein

said means for universally coupling comprises a flexible cable coupled at one end to said central body member and at the other end to said hand-grasping portion.

9. A release mechanism according to claim 6, wherein

said means for universally coupling comprises a yoke pivotally coupled to said body member for pivotal movement about a vertical axis, and a swivel rod pivotally received at one end in said yoke for pivotal movement about a first horizontal axis and pivotally received at the other end in said hand-grasping portion for pivotal movement about a second horizontal axis perpendicular to said first horizontal axis.

10. A release mechanism according to claim 1, wherein

each of said jaws includes a plurality of central lugs each having a central lug bore therein, and

said means for pivotally mounting comprises a rod coupled to said body member and passing through said lug bores.

11. A release mechanism according to claim 1, wherein said locking means comprises

a first linkage member,

first pivot means for pivotally coupling one end of said first linkage member to an end of a first of said jaws,

a second linkage member,

second pivot means for pivotally coupling one end of said second linkage member to an end of the second of said jaws,

third pivot means for pivotally coupling the other ends of said first and second linkages together,

the distance between said first and second pivot means, when said jaws are in the grasping position, being not greater than the sum of the distances between said first pivot means and said third pivot means, and said second pivot means and said third pivot means.

12. A release mechanism according to claim 11, wherein

said manually activated means comprises a trigger pivotally coupled to said central body member and cable means for connecting said trigger and said third pivot means.

13. The combination according to claim 1, wherein said jaws include

abutment means, protruding inwardly from adjacent faces of said jaws adjacent said recesses, for establishing a minimum spacing between said jaws in said grasping position.

14. The combination according to claim 1, wherein

the forward portion of each of said recesses is spaced inwardly from the forward edge of the jaw in which said recess is formed and is outwardly diverging from the longitudinal axis of said mechanism and rearwardly extending along such longitudinal axis.

16. The combination according to claim 14 wherein

said recesses are each hemispherical, and said protuberance received in said recesses is substantially spherical thereby providing a universal coupling between said protuberance on said nock and said recesses in said jaws.

15. A hand-held arrow release mechanism for use with an arrow nock releasably received in the release mechanism, the arrow nock being coupled to an arrow received on a bowstring, the combination comprising:

an arrow having an arrow nock coupled thereto, said nock having a protuberance thereon with a cam surface facing the forward tip of said arrow; and

a release mechanism including

a central body member having a hand grasping portion,

a pair of opposed jaws, each having a recess on facing sides thereof, the forward portion of each recess being in the form of a cam follower surface corresponding to part of the cam surface on said nock,

means for pivotally mounting said jaws to said body member,

means for biasing said opposed jaws towards each other into a grasping position in which the cam surface portion of said arrow nock contacts the cam follower surfaces of said recesses,

locking means for locking said jaws together in the grasping position thereby locking said arrow nock protuberance between said jaws, and

manually activated means, coupled to said locking means, for releasing said locking means thereby allowing said nock cam surface to move forward along said cam follower surfaces under the influence of the bowstring pulling on said nock so said jaws are pivoted outwardly of the grasping position by the moving nock cam surface, thereby releasing said nock and arrow therefrom.