US2265564A - Arrow - Google Patents

Description

Dec. 9, 1941. P. E. KLoPsTEG ARROW Filed Sept. 29, 1939 Il"""Illlllnmm- Ll.-- Illlllllllllllllllljlllll I .l

. MTE@ Patented Dec. 9, 1941 U'Nfl T ED `5"*1'rtfl` PATEN T v"(lfFLiFiiCl?.

Y ARROW Paul .E.Kl0,psteg, Evanston, Ill.

Applicationseptember 29, 1939, Serial No. 297,145

3 Claims.

the arrow until it `abutsthe shoulder formed at y the juncture of the main body of the arrow with the reduced end. The outer diameter yof the Vpile is exactly equal to thediameter of the arrow-so that the entirelength of the yarrow is of vuniform diameter. v

`If 'an arrow of this type strikes a Yhard object, the arrow will break, particularly if 'thefblow'is a glancing one, or atleast the pile will be -forced sharply against the 'shoulder onthe shaft with the result that the shaft is upset at the shoulder causing vthe'arrow to lose its *accuracyinf-flight.'

Mylinvention provides a new form of arrow pile which substantially Aeliminates the possibility "of breakage, or of impacting .when the arrowstrikes a hard object. ItV also has the advantage that each time the arrow strikes, the pile is more firmly seated onthe shaft. Y

`Other objects and advantages of my improved arrow pile include ease of manufacture and application to an arrow shaft, light-weight, andthe facility with which arrows employing the new type of pile may be matched in weight .and balance.

Further objects and advantages will become apparent as the disclosure 'proceeds and the description is read in conjunction with the accompanying drawing, in which- Fig. 1 is a fragmentary view showing aselfarrow equipped with a conventional type of pile, and showing further, the damage which is Vdone to the arrow by impacting;

Fig. 2 is a corresponding view of an arrow equipped with my improved form of pile, a quarter section of the arrowjbeing cutaway to better illustrate the manner in which the pile is joined to the arrow shaft;

Fig. .3 is anend elevational view of the arrow shown in Fig. 2;

Fig. 4 shows an arrow provided with a hunting point that is applied to the arrow shaft in aecordance with the teachings of this invention;

Fig. 5 is a side, elevational view of the hunting point shown in Fig. 4; and

Fig. 6 shows another way in which a hunting point may be fixed to the arrow shaft within the scope of this invention.

Most arrows used for tournament play are equipped with hard wood footings at the head of the arrow in order to strengthen the arrow against breakage and impacting. But even with footings of this kind, breakage and inipactingare common.

Although my improved Yform of pile mayl be used with arrows equipped -with. hard wood Afootings as well as arrows which arenot so 'made (this latter type being known as self arrows), the .footing is not necessary when my "improved pile is used, because of the mannerin'whichth'e pile protects the shaft. Thiscan lbest be un'derstood by referring .rst'to Fig. 1in whichV a con-Y ventional arrow is shown at I0 havilng a refduced end .portion II of cylindrical'form which produces ay shoulder I2 at the juncture ofthe .body of ,the shaft with the reducedl end portion. 'Thejpile, generally designated Ij3, istubular inform having a sleeveportion I4 which telescopes over the reduced end'l I. and abuts the shoulder .|2. The tip of the pile I5 is integral with the sleeveportion I4 of the pile. l n

Itis obvious that when an arrow of thistype strikes` a hard object witha glancing ,blowgforces are set up at the shoulder I2 which, by reason of the reduced diameter of the, shaft at this point andthe lever action which takes place, is very likely to breakthe arrow` at vor near the shoulder I2. k,Even if the arrow does not Lbreak, and particularly if the blowis head-on, ,the arrow'fis usually damaged `by reason .of the Vvpile being forced against the shoulder `I2,.causing the Wood immediately adjacent the Shoulder to r.be .impacted, as indicated at I6. n

To overcome this difficulty, yI taper the end of the arrow as .indicated .at I'I land apply apile whichis reamed out with a. correspondng taper., as shown in Fig. 2. Preferably ,-a Morse D.t'aper (.05208/1) is used for the mating taperedsurfaces I'I and the inside .diameter of the .pileat itsrea-r end I8 is such-that when the pile is driven onto the tapered end I9 of the shaft, `a small clearance Z'f'is left between the :end of the shaft and *the*` tip ,ofthe "pile, The lexterior v face 20mi the pile `has adiameter equal to thatxof-'t-he shaft so that it forms a continuation of its surface.

Preferably the clearance 22 between the end of the shaft and the tip I5 of the pile is such that the pile cannot be driven onto the reduced end I9 of the shaft more than an amount which the reduced end I8 of the pile can stand without breakage.

The pile is preferably secured to the arrow shaft by a suitable cement such as Cenco-Sealstix cement, made by the Central Scientific Company of Chicago, Illinois. If desired, the inner face oi the pile or a portion of it, may be knurled, as indicated at 23, to rmly grip the shaft and assist in holding the pile in place.

Slight adjustments in the weight of the arrow may be made by turning off suitable portions from the end I8 of the pile. In other words, the length of the pile may be readily varied to provide accurate adjustment of weight.

When an arrow equipped with my improved pile strikes a hard object, the blow is taken over the entire tapered surface of the pile. There are, therefore, no localized stresses and the danger of breakage is substantially eliminated. Fur-A thermore, there is no fulcrum about which hig stresses can be set up in the arrow.

The pile is preferably made of brass, or ste-el, y

point consists of a Spearhead 24 having a tang` 25 adapted to be received byv a slitv 26 in the-end of the arrow shaft 2l. The end of the shaft is tapered as at 21 and preferably av Morse 0 taper is used, as before. 1

The tang 25 ofthe hunting point is held vin place byfaferrule 28 which is'taper rearned, as indicatedfat 28 to the same pitchas the tapered surface 21 on the shaft,.and theend of the ferruleV is flattened, as shownfat Y3l), Vand provided with'. an openingzto receive the tang of the hunting point.'A The ferrule28is applied to the shaft with cement, as before,.,and preferably the point 24 is spot-welded or soldered to the ferrule 28 at 3|". Obviously whenever the arrow strikes an object, ythe rearward force applied to the ferrule 28 through the point 24 tends to tighten the grip of the tapered end of the shaft 2| on the tang 25. i The ferrule may, if desired, be made from a bullet jacket 32, as shown in Fig. 6. The jacket lis slotted, as shown at 33, to receive the blade 24,' and the tang 25 is receivedas, before by a slit 26 in the end of the shaft. If desired, the blade maybe spot-welded or solderedY to the jacket at 3,4.V The blade in additionl to transmitting rearward forces through `the soldered or welded con-` What I claim is:

1. An arrow including a cylindrical shaft of substantially uniform diameter having a slightly tapered head and a point for the arrow comprising a body portion having an outer cylindrical surface of substantially the same diameter as the shaft, and an inner tapered surface mating with the tapered head of the shaft, the tapered inner surface of the lbodyconstituting substantially the sole force transmitting surface between the point and the shaft, the arrangement being such that the outer surface of the point forms a continuation of the cylindrical surface of the Vshaft to maintain the accuracy and flight characteristics of the arrow at a maximum, and

whereby the force of the arrow striking a hard nection 24, ralso transmits these forces to the jacket 32 atfthel'rearw'ard end 35`of the yslot 33. The depthof the slit 26 in the formsof the invention shown in Figs. 5 and 6 is preferably such that the tang 25 will strike' kthe bottom of the slit before/excessive stresses .are applied to the rear end I8 ofthe ferrule, thu s insuring that theferrule will not split when the arrow strikes an extremely hard object.

1 All of theforms of the invention shown are "suitable for mass production work*- and arrows may be quickly matched by turning ol desired object merely causes the point to be driven further onto the tapered head of the shaft.

2. yAn arrow including a'cylindrical shaft of substantially uniform diameter Ahaving a slightly tapered head withaflongitudinal slit, anda point for the arrow vcomprising a body portion having an n outer cylindrical surface vof substantially'l the same diameter as jthesha'ft, and a Itar'xired inner' surface mating Withthe vtapered vhead of the shaft, a blade having a tangextending through the body portion of thejpoint into the s1 it,".the tang being rigidwiththerbody portion and of such length that the end thereof is'dnor'mally withheld from contact with th shaft, the tapered inner surface of the body constitutingfthe sole force transmittingsurface between the point and the arrow shaft, the -arrangement being such that the outer surface of the point forms a con-LA tinuation of the'vcylindrical surfacefof the shaft to maintain the V'accuracy yand flightcharacteristics of the arrow at a maximum, and whereby theforce of the arrow striking la hard object merely causes the point-to be drivenfurther onto the tapered head oftheshaft. I 'A .v

3. An arrow including va cylindric-alfshaft vof substantially uniform .diameter havingla. slightly tapered head, and ay point forthe arrow/come prising a hollow body portion closed 'at its outer endand havingan outer cylindrical surfacejof substantially the same diameter as'y the shaft, and an inner tapered surface mating with .the

' tapered head of the shaftrand withholdingthe amounts-'from the rear ends 'of thepiles or fer- .1

rules. Arrows made' in accordance with this invention have greatly increased life, and are no more expensivey to make than thosenow corn-'- monly used. f Y l extremity of the shaft from contact with the outer end ofthe body portion, the taperedfinner surface of the bodyfconstituting substantially the sole force transmitting surface between the point andthe arrow shaft, the arrangement being such that the outer surface of the `point forms a continuation, of-thecyli'ndrical surface of the shaft to ,maintain the `accuracyand flight characteristics of the arrow'at aY maximum, `and whereby the forcegofthe arrow; striking a hard ,object merely causes the point to be drivenlfurfl vther onto the tapered head of .theshaft l

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