US2125591A - Bow and arrow construction - Google Patents

Description

Patented Aug. 2, 1938 UNHTED STATES PATENT orFicE 2 Claims.

My invention relates to a bow and arrow construction and is designed to provide a construction of the type specified wherein,

1. The bow, bow string and arrow will all operate in a common plane during discharge of the arrow and thereby eliminate the usual tendency of the arrow to cant or whip.

2. Wherein spiral ribs and grooves are provided on the bow and arrow respectively which coact during arrow discharge to initiate axial rotation of the arrow, the walls of the grooves of the arrow coacting with the air during free flight to maintain the axial rotation of the arrow initiated by the ribs and grooves, such axial rotation causing the arrow to travel in a true path of increased accuracy;

3. Wherein the necessity of grouping arrows in 'lots in an effort to obtain corresponding arrows in each lot is eliminated;

4. Wherein the arrows and bow may be entirely machine made with resulting material decrease in expense of production and with resulting material increase in length of life; and

5. Wherein the bow is made up of detachably connected elements to provide the advantages of a knock down structure when not in use.

I will describe my invention in the best form known to me at present but it will be understood that the same is susceptible to changes in form and proportion and to desirable mechanical additions with the exercise of ordinary mechanical skill and without departing from the spirit of my invention.

In the drawing chosen to illustrate my invention the scope whereof is set forth in the appended claims:

Figure l is a side elevation of a bow embodying my invention,

Figure 2, an enlarged vertical section of the central or handle portion of the bow;

Figure 3, a view looking at the rear end of the handle portion,

Figure a side view of an arrow constructed in accordance with my invention,

Figure 5, a section on the line 5-5 of Figure 4; and

Figure 6, a detail perspective View of the arrow socket carried by the bow string.

Referring to the drawing my improved bow is shown as comprising a central or handle section A and terminal resilient sections B and C. The handle section A is preferably formed of metal or fiber provided with a body portion I!) having opposite sockets H and H2 in which are detachably engaged the resilient sections B and C respectively. It will thus be apparent that the bow can be readily knocked down in the interest of convenient transportation or storage. The handle section further embodies a rearward extension 53 and bridge connections It and I5 extending from a point intermediate the extension [3 to points adjacent the outer ends of the body portion H] to thereby provide thumb openings I! and I8 and act as reinforcement ribs. Extending axially through the body portion Ill and extension I3 is a bore I9 whose Wall is provided with spiral lands 2!! for a purpose that will presently appear. The free ends of the sections B and C are connected by the usual bow string 2! which carries centrally a cylindrical socket D having a longitudinal split 15 22, forming resilient jaws 23 and 24, adapted to be moved inwardly toward each other by opposed finger pressures thereon.

My invention further embodies a specially constructed arrow E illustrated in Figure 4 which is 20 machined true from raw or treated wood, metal or fiber and embodies a cylindrical shank or stem 25 and a pointed forward end 26. Formed in the arrow E and opening through both ends thereof are spiral grooves 21 adapted to receive respective lands 2!! when the arrow E is loaded into the bore I9. Arrows produced by machining as just described will all correspond and eliminate the necessity of grouping now required in respect to hand produced arrows. 30

In using my improved bow and arrow the rear end of the latter is inserted in the forward end of the bore I9 with the lands 2!] engaged in the grooves 21. The arrow is then moved rearwardly through the bore until its rear end is seated in the socket D. With the parts in this status the archer grips the socket D so that oppositely directed finger pressures will be exerted up the jaws 23 and M to thereby exert a light frictional grip upon the arrow. The bow string 2| and the arrow are then drawn rearwardly in the usual manner. During this drawing of the bow string and rearward movement of the arrow light pressure upon the jaws 23 and 24 will permit the arrow to rotate in response to the coaction of the aforesaid lands 26 and grooves Zl. Upon release of the bow string 2| the arrow will be projected in the well known manner. However, during discharge movement of the arrow through the base I 9 the coaction of the lands 2B and grooves 21 will initiate axial rotation of the arrow, while the resistance of the air against the walls of said grooves will serve to continue such axial rotation of the arrow during its free flight and thereby enhance accuracy in either target shooting or hunting.

While I have shown the handle portion bore l9 provided with two spiral lands 2! and the arrow E with two spiral grooves 21 the number of these lands and grooves may be varied as desired as may also the pitch or lead thereof.

I claim:

1. An archery bow having a central handle, said handle including a body portion, oppositely disposed resilient bow elements carried by the body portion, a rearward extension on the body portion, said extension and body portion being provided with a bore through which an arrow travels during discharge, and bridging connections between the body portion and extension forming thumb openings, and acting as reinforcement ribs. 2. An archery bow including a body portion, oppositely disposed resilient bow elements carried by the body portion, a rearward extension on the body portion, said extension and body portion being pro Med with a common bore through which an arrow travels during discharge, said bore being provided with spiral lands extending the full length thereof for engaging full length spiral grooves of an arrow during discharge of the latter, a bow string connecting the resilient bow elements, and bridging connections between the body portion and extension forming thumb openings and acting as reinforcement ribs.

OSCAR R. SMITH.

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