US3517658A - Archery bows - Google Patents

Description

June 30, 1970 s u s 3,517,658

' ARCHERY news 3 Filed Jan. 18, 1968 FIG.2 I 22\ 27\ {2O INVENTOR. DONALD E. SHURTS HIS ATTORNEY United States Patent Ofice 3,517,658 Patented June 30, 1970 3,517,658 ARCHERY BOWS Donald E. Shurts, 317 N. Wright Ave., Dayton, Ohio 45403 Filed Jan. 18, 1968, Ser. No. 698,785 Int. Cl. F41b 5/00 US. Cl. 124-23 2 Claims ABSTRACT OF THE DISCLOSURE An archery bow with a bail-like swivel hand-hold which is pivoted to the limbs of the bow so that, when the hand-hold is grapsed and the string is drawn, the string, the longitudinal axis of the bow, and the thrust vector of the bow-hand lie in the same plane. The hand hold is offset from the bow limbs in a direction away from the string side of the bow.

It is well known that the hand that grasps an archery bow of conventional type imposes torque forces thereon tending to twist the how one way or another, depending on the arm-muscle activity of the archer. The release of a taut bow string tends to upset the muscular balance at the time of arrow release to cause a flinch movement of the bow, with consequent elfect on the arrow flight.

To combine a self-aligning bow and string construction and to minimize the flinching condition, this invention provides a bail-like swinging hand-hold by which to grasp the bow and which, when it is grasped and the bow string is drawn, will swing forwardly around pivots supporting it for such action, said pivots being in line with and supported by the upper and lower limbs of th ebow, which are held in spaced alinement and are supported by a yoke in which the hand-hold pivotally swings.

No prior art is known, except that a loose sleeve sometimes is provided for grasping the bow, but such a sleeve does not provide the mechanical couple that alines the string, the longitudinal axis of the bow, and the vector line of the bow thrust, as is provided by the construction of this invention, in addition to minimizing flinching by a loose coupling of the hand-hold.

To keep the hand-hold from 36'O-degree swing on its pivots, it is provided with a pin which plays in an aperture in a leg of the yoke.

THE DRAWING The drawing is of FIGS. 1 and 2.

FIG. 1 being a side elevation of the archery bow in repose and the hand-hold swung forwardly in mid-line of its limited movement, and

FIG. 2 being a section 'on the line 2-2 of FIG. 1, showing the swing-limiting pin-and-slot construction.

GENERAL DESCRIPTION The archery bow is fabricated of an upper spring limb 20 and a lower spring limb 21 secured in end-to-end spaced relation to an upper leg 22 and a lower leg 23 of a support yoke 24 made of metal strong enough to resist the bending forces resulting from drawing the bow string. On pivots 25 and 26-, in alinement with the longitudinal axis of the heavy parts of the bow limbs 20 and 21, is swung the hand grip bail, constructed with arms 40 and 41, to which the hand grip 43 is secured. Projecting from the upper bail arm 40 is a pin 27, Whichlimits theswing of the hand grip bail to the dimensions of the slot 28 (see FIG. 2) in the yoke in which the pin 27 moves.

An archer gripping the hand grip 43 and pulling the bow string creates a couple which alines the bow string, the pivots, and the center line of the hand grip. Too, on release of the bow string, the flinching muscles of the bow-holding arm are not communicated to the bow except through the pivots, and this eliminates a large part of the total flinch reaction because of the length of the arms 40 and 41.

Therefore, not only does the bow of this invention provide for the initial alinement of the string and the bow limbs with the forward thrust vector, but a large part of the release flinch effect of the bow-gripping arm is eliminated.

What I claim is:

1. An archery bow including in combustion an upper spring limb portion; a lower spring limb portion; a U-shaped support yoke opening rearwardly and to the legs of which yoke the inner ends of said limb portions are secured in axial alinement; an elongated hand-grip disposed parallel to said limb portions and offset from the axis of said limb portions in a direction away from the string side of the bow, and means mounting said hand-grip for limited swinging movement about an axis aligned with said limb portions.

2. The bow of claim 1 in which the swing of the hand grip bail is limited by a pin-and-slot coupling with the yoke.

References Cited UNITED STATES PATENTS 2,507,271 5/1950 Ringel 124 ?A 2,854,965 10/1958 Eberbach 124 24XR 2,957,469 10/1960 Wilkerson 124--24 2,960,084 11/1960 Kramer 124 24 GEORGE J. MARLO', Primary Examiner W. R. BROWNE, Assistant Examiner

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