US2373216A - Arrowhead - Google Patents

Description

April-10, 1945. I V c. J. ZWICKEY 2,373,216

ARROW HEAD Filed Aug. 20, 1942 Patented Apr. 10, 1945 UNITED STATES PATENT OFFICE ARROWHEAD Cliflord J. Zwickey, North St. Paul, Minn. Application August 20, 1942, Serial No. 455,402

7 Claims.

My invention relates to an improvement in arrow heads, and deals more particularly with a type of arrow head to be used in hunting and for similar purposes.

It is an object of the present invention to provide an arrow head having a reinforced tip or point and which is generally sturdy in construction. This tip is strengthened without sacrificing speed or accuracy due to the unusual construction thereof. I

It is a feature of the present invention that my arrow head is formed of three general parts. One of these parts comprises a central portion including a pair of opposed blades and a pointed forward end. The other two parts of the arrow head fit on opposite sides of the center part and are welded or otherwise aiiixed thereto. These opposed parts form a socket for embracing the forward end of the arrow shaft and are provided with a pointed forward end designed to strengthen and reinforce the pointed end of the central section.

A feature of the present invention lies in the fact that the arrow head is completely balanced in the construction thereof. The central portion of the arrow head comprises merely a fiat sheet of material while the other two pieces forming the arrow head are identical and may be formed on the same die, if it is so desired. When the three parts are in assembled relation the arrow head is completely balanced and is no heavier on one side than upon the other.

A further feature offthe present invention lies in the fact that the central arrow head forming member is slotted longitudinally to permit the forward end of the arrow shaft to engage therein. The two opposed arrow head forming sections are each provided with a tapered recess therein which forms one-half of the socket to engage the forward end of the arrow shaft. If the central element were not notched, it would be necessary to provide a longitudinal split in the forward end of the arrow to receive this arrow shaft.

A further feature of the present invention lies in the manner of reinforcing the arrow tip or point. In the formation of the arrow head the An extremely strong, light construction is thus provided.

A further featureof the present invention lies in the fact that sharpened transverse vanes or blades may be formed to project from the arrow head on a plane intersecting the axis of the arrow head, and at right angles to the plane of the bladed central section of the arrow. These transverse vanes or blades are preferably sharpened and act to reduce frictionon the arrow shaft when the arrow pasess through the material penetrated. These vanes are preferably integral with the opposed side elements forming the arrow head and do not comprise a separate blade projecting through a slot in the head. These transverse blades or vanes also act to cut a cross-shaped slot in the material penetrated, reducing friction on the arrow shaft and causing greater injury to the material penetrated.

A further feature of the present invention .resides in the fact that in a modified form my arrow head may be made in two parts, rather than three, with many of the same advantages. The point of the arrow head is reinforced, being of double thickness, While the cutting blades of the head are formed of a single thickness. The construction is such that each of the two parts forming the arrow head are similar. Each part includes one blade and one grooved portion designed to form one-half of the socket for receiving the arrow shaft. Thus this construction is balanced and is slightly less expensive to construct than the preferred form of construction.

These and other objects and novel features of my invention will be more clearly and fully set forth in the following specification and claims.

.In the drawing forming a part of my specifica- 'tion:

Figure 1 is a side elevational view of an arrow head showing the construction thereof.

Figure 2 is a top plan view of an arrow head showing my new construction.

' Figure 3 is an end view of the arrow head shown in Figures 1 and 2 of the drawings.

Figure 4 is an end view showing the end of the arrow'head opposite that shown in Figure 1.

Figure 5 is a front perspective view of one of the side elements used in the assembly of the arrow head.

Figure 6 is an elevational view of the central bladed section of the arrow head before assembly thereof.

Figure 7 is a side elevationalview of a modified form of arrow head construction.

Figure 8 is a sectional view through the tip of the arrow, the position of the section being indicated by the line 8-8 of Figures 1 and '7.

Figure 9 is a side elevational view of a modified form of construction of arrow head.

Figure is an end view of the arrow head illustrated in Figure 9.

The arrow head A, best illustrated in Figures 1 through 6 of the drawing, is formed of three main parts secured together. One of these parts it) comprises a fiatblade designed designed to act as the central member of the arrow head. Before asesmbly of the arrow head the blade has the general appearance illustrated in Figure 6. It will be noted that the member I0 is provided with'a rounded forward end II and outwardly diverging edges l2 which form the edges of opposed blades l3. These blades l3 are separated by atapered slot M which is formed in order to permit the'forward end of the arrow shaft to engage between the, blades. 13., The rear edges of the blades l3 may be pointed at IE 'to provide barbs, 'ifjitjisso vdesired. Obviously the ends of the bladesmay be cut off square or at forwardly inclined angles if the barbs l5 'ar'e not ides'ired. The opposedsideelements aresimilar form and are designed to engage'onf opposite sides of the flat blade l0. Theside elements I6 are provided with'a rounded point I! corresponding to the rounded point H of the plate II), and'o-utwardly tapered edges l 9 diverged from the pointed end to followjth e contour of the edges l2 of the plate 10. As one member lfiis on'either side of the plate in, the forward end of the arrow head is formed of three thicknesses of material. A Q i At a point spaced fromthe forward end of the members it, shoulders :26 are formed which cut down the width of the plate considerably. From the shoulders 2i! the members it taper gradually outwardly. d A groove or channel' ll is provided in each member Hi, this channel?! being substantially :semi-circular in cross section and tapering from a relatively narrow depth and Width to a depth and width of considerable size at the rear edge' of the ng enibjer. This groove 2! corresponds'in taper to the slot [4 in the plate Ill.

A triangular barb is formed from each of the grooves or channels'2 i and these barbs'Z'Z are bent outwardly to extend I on a plane at right 'angles to a plane through the surface to the plateflllin assembled form, The forward edges '23 of the barbs are sharpened 'so as'to provide a cuttin'g surface. c,

The arrow head isassembledfso 'thati'one of the side membersl'fi is positioned on either side of the'plate l'll'in opposed'relation. 'Ih'ese fsi'de members I6 arethen spotwelded to the central plate ii), thus securingthe three elements forming the blade'in proper'assembledform. The edges of the blade'larethen sharpened the full length of the arrow head "as best illustrated in Figure 1 of the drawing. The edges 19 ofthe forward end of the side elements f [6' are ground away together with'the'edges IZofIthe'centraI plate I0 until a sharp pointed edg'e'is provided. This sharp e'dge is'relativelynarrowto the rear of the 'thickened'forward section, but the forward thickened section of the arrow headfis'of three thicknesses of material, Thus the rearfof the arrow head is reinforced "by "the edges of the socket forming elements without sacrificing lightness in weight. Furthermore, while fjtjhe point of the arro'w' is reinforced, jandiis lrela tively thick, a thinkeen' cutting edge is provided rearwardly from this thickened forward section.

The triangular :blades 22 act to slit the material penetrated at right angles to the cut formed 'by the cutting edges of the central plate 10, thus reducing the friction caused 'by stretching the material penetrated as the arrow head and shaft penetrate the same. The arrow head and shaft can enter such a cross cut in the material penetrated much more readily than they could enter a single elongated cut.

The arrow head B, illustrated in Figures 7 and 8 of the drawing, is identical to the construction previously described with the exception that the transversely extending blades 22 are omitted in this construction. The arrow head B includes "side elements '26 identical in form with the side members ifi oi, the previously described arrow head "A, secured to "a central plate 25 identical in shape with the previously described plate II]. The side rnembers 26 includea pointed forward portion 'fl "and a tapered channel 29 [between the lateral edges'thereof, Ihe channels 2 9 are in u posed relation, as best illustrated in Figure 8, when the side members have been secured to the central member 25. The oplios'ededges30 of the central plate '25 are sharpened and the edges 3| ofjth'e forwardportion'of the blade are likewise sharpened, as illustratedin Figure '7. T

In Figures -9 and 10 of the drawing, Iillustr'atc a modified form of arrow head constructionc which is preferablyformed of two elementsrather than three. 'In'this type ofco-nstruction the arrow head is formed 7 of two similar members 33 and '34 which arespot'welde'd or otherwise secured tog'ether'toform a complete balanced arrow head. While the two "elements forming the arrow 'head are identical, different numerals will be given the parts of'ea'ch so that the parts may be .readily described in the drawings. The arrow head-portion 34 comprises a substantially fiat body including a pointed forward end 35 which on one side extends along a continuously tapered edge 36 to'form a blade 31. The opposite side ofthe tip 35 terminates in a shoulder 39 which leads to anarrower edge 40. A channel 4| is provided between the blade 31 and the narrower edge 40. Thischannel is tapered in form and is substantially semi-circular in cross-section. r Q

The other arrow headjsection 33 comprises a substantially fiat body having a forward point, not shown in the'drawings, but underlying the point 35 of the section 34 andextending contiguous therewith. One side of this point continuesalong a curved edge 42 to form a cutting 'bladej43'in opposedjrelation to the blade 3]. The other, side of the point, terminates a shoulder 43 which. continues along into anarrower edg-e Q4. ,The channel 45 is positioned betweentm d dihe. ad v. a h Q t e ade and 43 a e offset Sl tly toextend ,on a single plane through the center of the arrowhead. fI'heo-fiset'pf thebl'ade il l follows the contour of the narrow edge 44 and the shoulder of the arrow headsection 33. Similarly the'ofiset oi the blade "43 follows the contour oithe'harrovv edge 40 and the shoulder 39 ofit'liearr dw heads'ect'iijn 34. Thus the blades and 1a ,q ect y opp ed, and at he'same time the arrowhead islentirely balanced inits formation. I The channels 4 I and 45 1 provide 2. b k 'ior t ferwa d nd"o he rrbw a E h "o t m mb r-7 3 fa i il j' zy. be -m9.- vi'de with, ijt an rc sel f xt n ing :wa e'i fromthe b'odyof"thechamiel and projectingoutwardly therefrom. These blades 41 are preferably substantially triangular in form and are provided with a sharpened forward edge similar to that illustrated on the blades 22 shown in Figure 2 of the drawing. These transverse blades may be omitted if it is desired, but form an important function in providing a transverse slit when the arrow is used for hunting purposes.

While I have described all of the arrow heads as having pointed forward ends, it should be understood that the forward end can beblunt if it is so desired. In construction of arrows to be used for certain types of game, a blunt forward end is preferable, so that the arrow may be used to provide shock rather than to penetrate. Furthe spirit of my invention.

I claim:

1. An arrow head comprising three sheet material elements secured together in surface contact, a pointed forward end formed of all three thicknesses of material, and an axial socket formed by outwardly bulging the two outermost layers of material. 7

2. An arrow head comprising three sheet material elements secured together in surface contact, a forward end formed of all three. thicknesses of material, the rear ends of the centerthickness of material extending beyond the edges of two outermost thicknesses to form a central single thickness blade on each side of said head, and an axial socket formed by the outermost thicknesses of material to receive an arrow shaft.

3. An arrow head comprising three laminations of material secured together, a pointed forward end formed of all three thicknesses of material. continuous diverging edges on the center lamination extending beyond the edges of the outer two laminations to provide single thickness side blades, an axial socket formed by bulging .out

wardly the two outermost thicknesses, and an axial slot in said center lamination within said socket.

4. An arrow head comprising a pointed central plate having outwardly diverging edges, ,a, pair of similar socket forming plates secured in opposed relation onopposite sides of said central plate, and a blade cut from the body of each socket forming element and extending outwardly at substantially right angles to the plane of said central plate.

5. An arrow head comprising a sheet material body including a pointed forward end and outwardly diverging edges eXtending from said pointed end, an axial socket rearwardly of said pointed end to receive the forward end of an arrow shaft, and a pair of blades cut from said body and projecting outwardly from said socket at substantially right angles to the plane of said outwardly diverging edges.

6. An arrow head comprising a body of laminations of sheet material, a pointed forward end on said body comprised of a plurality of laminations of material, outwardly diverging edges comprised of a single thickness of sheet material, and an axial socket formed by outwardly bulging two laminations of sheet material.

'I. An arrow head comprising a sheet material body including a forward end and oppositely disposed blades extending rearwardly therefrom, an axial socket rearwardly of said pointed end to receive the forward end of a arrow shaft, and a pair of blades cut from said body and projecting outwardly from said body at substantially right angles to the plane of said oppositely disposed blades.

CLIFFORD J. ZWICKEY.

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