US3826471A

US3826471A - Device for pulling arrowheads from implantation in solid objects

Info

Publication number: US3826471A
Application number: US00323533A
Authority: US
Inventors: G Vanausdal; R Rowley; H Orton
Original assignee: Individual
Current assignee: Individual
Priority date: 1971-10-20
Filing date: 1973-01-15
Publication date: 1974-07-30
Anticipated expiration: 1991-07-30

Abstract

A tool for removing arrows from locations of impaction such as trees, tree stumps and so forth. The subject tool includes a lever member and a retainer member pivoted together, with both of the same including uniquely constructed forward portions that effect, through mutual intercooperation, the retentive gripping of an arrowhead at its fin as well as a progressive tightening action, through use of a cam principal, in increasing such grip as pressure is applied the lever member. Protuberance means preferably in the form of a sharpened point are provided to penetrate or make a detent with respect to the generally soft metal of an arrowhead point. Spring pressure provides initial implacement of the protuberance whereas commencement of hand pressure upon the lever produces an increased retentive engagement of the tool with the arrowhead fin through a camming action of the forward jaw of the lever member and the pivoted retainer member provided with a cooperative cam follower surface. Progressive pressure on the rear of the tool effects a withdrawal of an arrowhead from its impacted position. Additionally, rear edge chisel means may be incorporated for stripping away bark as needed to gain access to an impacted arrowhead.

Description

United States Patent Orton et al.

[ll] 3,826,471 July 30, 1974 DEVICE FOR PULLING ARROWHEADS FROM IMPLANTATION IN SOLID OBJECTS Jan. 15, 1973 [22] Filed:

21 Appl. No: 323,533

Related US. Application Data [63] Continuation-impart of Ser. No, 190,755, Oct. 20,

I971, abandoned.

[52] US. Cl. 254/131, 29/267 [5i lnt. Cl.... 866i 3/00 [58] Field of Search 254/22, 27, 131, 132; 29/267 Primary Examiner-Al Lawrence Smith Assistant Examiner-Robert C. Watson 571 ABSTRACT I A tool for removing arrows from locations of impaction such as trees, tree stumps and so forth. The subject tool includes a lever member and a retainer member pivoted together, with both of the same including uniquely constructed forward portions that effect, through mutual intercooperation, the retentive gripping of an arrowhead at its fin as well as a progressive tightening action, through use of a cam principal, in increasing such grip as pressure is applied the lever member. Protuberance means preferably in the form of a sharpened point are provided to penetrate or make a detent with respect to the generally soft metal of an arrowhead point. Spring pressure provides initial implacement of the protuberance whereas commencement of hand pressure upon the lever produces an increased retentive engagement of the tool with the arrowhead fin through a camming action of the forward jaw of the lever member and the pivoted retainer member provided with a cooperative cam follower surface. Progressive pressure on the rear of the tool effects a withdrawal of an arrowhead from its impacted position. Additionally, rear edge chisel means may be incorporated for stripping away bark as needed to gain access to an impacted arrowhead.

7 Claims, 9 Drawing Figures DEVICE FOR PULLING ARROWI-IEADS FROM IMPLANTATION IN SOLID OBJECTS v incorporating a lever and a retainer pivoted thereto,

the two being mutually constructed such that a camming action will increase the retentive engagement of an arrowhead by the tool as the former is first gripped and then retrieved from its impacted position.

Archers and bow hunters are well acquainted with the problem which the present invention has solved. The problem is one of retrieving arrows that have been shot and have found their way into hardened objects such as trees, tree stumps and the like. It is very easy to break an arrow or to remove the arrow shaft inadvertently from its tip if one simply tries manually to pull an arrow out of its impacted position.

The present invention comprises a device or tool wherein the forward jaw design is configured to engage the arrowhead proper at a fin thereof and in such a manner that the arrowhead need not be circumscribed in order to effect a withdrawal thereof from its impacted position. Most important, protuberance means, preferably in the form of a sharpened, hardened point, is provided such that the same can come in contact with one surface of an arrowhead fin whereas the remaining surface will abut a reaction portion of the forward end of the lever member provided.

Most importantly, cooperable camming surfaces are provided both the forward jaw of the lever member and also of the retainer member pivoted to the former such that the initial resistance of the arrowhead to withdrawal will'in fact aid a further gripping of the arrowhead fin by the subject point. This is facilitated through a camming or wedging effect as between a bifurcated jaw portion surface of the lever member and the retainer member pivoted thereto. Thus, the increased gripping or detent engagement of the protuberance or point with the arrowhead fin further assures a gripping action so that as manual pressure is increased against the handle of the lever member the arrowhead is positively withdrawn from its impacted condition. Accordingly, the tool not only provides for an initial gripping of the arrowhead by the tool but also an increased gripping effect as manual pressure is initially applied, and finally, a firm withdrawal of the arrowhead as the lever is actuated through downward hand pressure.

Accordingly, a principal object of the present invention is to provide a new and improved device for withdrawing arrows from hard objects such as trees, tree stumps and the like.

A further object is to provide a simple and inexpensive tool that can be operated with one hand, to engage various types of arrowheads embedded in trees, posts or stumps, and quickly and easily remove such arrowheads and arrows from their impacted positions without causing significant damage either to the arrowhead or arrow.

A further object is to provide a tool incorporating means for stripping away portions of bark or wood so that the device can easily engage an embedded arrowhead.

An additional object is to provide a simple tool which is curved in such a manner as to provide a sliding fulcrum, this so as to give a maximum mechanical advantage at the beginning of the removal operation when resistance is greatest while at the same time giving the largest pull distance near the end of the removal operation when resistance is least and the greatest withdrawal effect is required.

An additional object is to provide a tool which can be used even though the hunter may be in an awkward position, and with the tool being constructed so that the greatest holding force in the arrowhead is applied ini tially while the arrowhead is gradually being removed.

The features of the present invention may best be understood by reference to the following description taken in connection with the accompanying drawings in which:

FIG. 1 is a side elevation of the subject tool with the jaw structure being completely opened.

FIG. 2 is an enlarged front elevation of the tool of FIG. 1.

FIG. 3 is a front elevation wherein the upper retainer member has been released slightly so as to advance downwardly, such that the sharpened point thereof begins to engage an arrowhead fin.

FIG. 4 is a side view of the tool wherein the same is in locked position, that is where thereis a maximum penetration of the sharpened point relative to the arrowhead fin as pressure is initially applied the lever member of the tool.

FIG. 5 is a front view of the structure shown in FIG. 4.

FIG. 6 is a plan view of the structure of FIG. 1. FIG. 7 is an isometric view illustrating use of the tool with an arrow that is embedded in a tree.

FIG. 8 is an enlarged detail of the return spring construction of the tool and its mounting.

FIG. 9 is an isometric detail of the cam follower, forward, depending end of the retainer member of the tool.

In the drawings lever member 10 is an elongate member including a forward bifurcated jaw portion 12 and a rearward cutting portion 13 taking the form of a chisel-shaped edge. Disposed proximate the bifurcated jaw portion 12 and positioned rearwardly thereof is a fulcrum portion 14, the same preferably including an arcuate, sliding fulcrum surface 15. Of course, various types of fulcrum surfaces can be used here. It is important, and believed very advantageous, for the fulcrum surface to be arcuately formed as indicated so that the point of contact of the fulcrum surface with an external object, such as a tree trunk, will advance rearwardly along the undersurface U, of lever member 10, as handle portion 15 of the lever member is advanced downwardly in the direction of the arrow 16, see FIG. 7.

The design of the bifurcated jaw portion at 12 is most important. Upstanding

portions

17 and 18 respectively have an interior, sloping camming surface 19 and also a generally vertical reaction surface 20. Retainer member 21 includes an integral depending arm portion 22 having enlarged aperture 23. The same receives pin 24 as the latter proceeds transversely through lever member 10 and across the slot 25 provided medially in lever member 10. The thickness of the material of retainer member 21 is chosen to be less than the horizontal width of slot 25. Correspondingly, aperture 23 is designed to be oversized relative to pin 24. In this way the retainer member 21 operates not only up and down pivoting about pin 24, but also displaces slightly laterally as forward portion 27 comes down with to and within the spacing or access opening 28 between

portions

17 and 18 of the bifurcated jaw portion 12.

Retainer member 21,-see FIG. 9, includes at the forward portion 27 a cam follower surface 32 which is slanted or inclines in essentially congruent manner with camming'surface 19. Additionally, a protuberance in the shape of a hardened point at 33 is supplied the forward portion of the retainer member. This point is brazed or soldered to the retainer member 21, where the latter is made of metal, and is configured so as to engage the fin 34 of a representative arrowhead 35. More will be said about this below. ln any event, a return spring 36 is supplied and is seated within hollow seat 37 and positioned over seat mount 38 of the lever member and retainer member 21, respectively.

It should be noted that surface 39 is preferably essentially vertical and parallel to the reaction surface of the jaw portion 12..

In operation the tool is placed in angulated position and the user presses down on'the thumb rest 40 provided so as to raise the forward portion of retainer member 21. At this position, andwith the tool .angulated as shown, a fin is positioned between the protuberance or point 33 and reaction surface 20 in a manner such that when the thumb rest is released, the forward portion of retainer member 21 gradually proceeds downwardly so that there is engagement as between the protuberance and the reaction surface. It should .be noted at this point that the tool is dimensioned such that there will be a sufficient'spacing, of perhaps 0.050 inches, in order that the fin of the arrow may fit within such space between the reaction surface 20 of the lever member 10 and corresponding surface 39. of retainer member 21. As the thumb rest is further released, the cam follower surface 32 proceeds downwardly over portion 28 of inclined camming surface 19 so as to urge forward engagement portion 27 toward reaction surface 20. Accordingly, the return spring 36 in effect forces forward portion 27 downwardly, andlaterally, so as to further cause the protuberance or point 33 to bite into the material of the arrowhead fin 34.

The actual withdrawal of the arrowhead from its impaction within a tree is effected by the application of hand pressure downwardly in the direction of arrow 16 so as to raise the bifurcated jaw portion 12 and hence the point of penetrative engagement of point 33 with the arrowhead fin. It is important to note that the greater the hand pressure downwardly at 16, the greater will be the wedging effect at the camming surfaces since arrowhead impaction will tend to keep the penetrating point 33 downwardly wherein'as the bifurcated jaw portion will have advanced upwardly. Such produces a further wedging proximate sloping camming surface 19 and cam follower surface 32 and hence a tightening of the gripping penetration at point 33 relative to the arrowhead fin.

Greatest leverage is applied at the time of initial pressure application, at 16 in FIG. 7, to effect arrowhead loosening. The application of additional pressure of course advances the fulcrum or point of contact rearwardly, and increases the pull distance upon the arrow- 4 head so that the same is rpogressively withdrawn from its impacted position.

I It is noted that the several design features of the subject tool are self-aiding in effecting a gripping of the arrowhead fin, which gripping action is initially increased through the camming surfaces and point engagement as described above, this preparatory to ultimate withdrawal of the arrowhead from its impacted location.

What is provided therefore is a new and useful tool for withdrawing arrowheads and hence arrows from various objects such as trees, tree stumps and the like.

While particularembodiments of the invention have been shown and described, it will be obvious. to those skilled in the art the various changes and modifications which may be made without departing from the essential feature of the present invention and, therefore, the

aim in the appended claims is to cover all such changes and modifications as fall within the true spirit and scope of the invention.

We claim:

-1. A device for pulling arrows at their arrowheads from external objects, said device including in combination: an elongate lever member having a forward, upstanding, bifurcated jaw portion defining a medial opening, a rearward handle portion, and an intermediate fulcrum portion providing a lower fulcrum surface; a retainer member aligned with said medial opening; transverse pivot means pivoting said retainer member to said lever member, said retainer member having a forward, depending, arrowhead engagement portion configured for operable positionment within said bifurcated jaw portion, said engagement portion having opposite'sides and including laterally facing pointed protuberance means operably positionable within said. bifurcated jaw portion on one of said sides and a cam follower surface on the remaining one of said sides, said bifurcated portion including interior surfaces defining said opening and comprising an upstanding inwardly facing reaction surface facing said one side and a camming surface facing said remaining one of said sides of said reaction member engagement portion, said cammin'g's urface and said cam follower surface being coop- .eratively contoured such that descent of said retainer member engagement portion effects a lateral camming of said cam follower surface by said camming surface whereby to advance said protuberancemeans laterally toward said reaction surface of said bifurcated jaw portion so as to grip an external arrowhead portion therebetween.

2. The structure according to claim 1 wherein said elongate lever member includes an upstanding medial slot, said retainer member including a depending portion pivoted to said elongate lever member within said slot by said pivot means.

3. Structure according to claim 2 wherein said slot is enlarged for pivoting of and relative to said depending portion in the longitudinal direction of movement of said depending portion, said depending portion including a pivot aperture enlarged relative to said pivot means.

4. Structure according to claim 1 wherein said elongate lever member includes a rearward, sharpened, rectilinear, transverse chisel edge.

5. Structure according to claim 1 wherein compression spring means is disposed between and abuts said elongate lever member and also said retainer member at respective points rearwardly of said pivot means.

6. Structure according to claim 1 wherein said protuberance means comprises a laterally extending sharp ened point.

7. A device for pulling arrows at their arrowheads from external objects, said device including in combination: an elongate lever member having a forward, upstanding, bifurcated jaw portion defining a medial access opening, a rearward handle portion and an intermediate fulcrum portion providing a lower fulcrum surface; a retainer member aligned with said opening; pivot means transversely pivoting said retainer member said elongate lever member and said retainer member.

Claims

1. A device for pulling arrows at their arrowheads from external objects, said device including in combination: an elongate lever member having a forward, upstanding, bifurcated jaw portion defining a medial opening, a rearward handle portion, and an intermediate fulcrum portion providing a lower fulcrum surface; a retainer member aligned with said medial opening; transverse pivot means pivoting said retainer member to said lever member, said retainer member having a forward, depending, arrowhead engagement portion configured for operable positionment within said bifurcated jaw portion, said engagement portion having opposite sides and including laterally facing pointed protuberance means operably positionable within said bifurcated jaw portion on one of said sides and a cam follower surface on the remaining one of said sides, said bifurcated portion including interior surfaces defining said opening and comprising an upstanding inwardly facing reaction surface facing said one side and a camming surface facing said remaining one of said sides of said reaction member engagement portion, said camming surface and said cam follower surface being cooperatively contoured such that descent of said retainer member engagement portion effects a lateral camming of said cam follower surface by said camming surface whereby to advance said protuberance means laterally toward said reaction surface of said bifurcated jaw portion so as to grip an external arrowhead portion therebetween.

6. Structure according to claim 1 wherein said protuberance means comprises a laterally extending sharpened point.

7. A device for pulling arrows at their arrowheads from external objects, said device including in combination: an elongate lever member having a forward, upstanding, bifurcated jaw portion defining a medial access opening, a rearward handle portion and an intermediate fulcrum portion providing a lower fulcrum surface; a retainer member aligned with said opening; pivot means transversely pivoting said retainer member to said lever member, said retainer member having a forward, depending, arrowhead engagement portion; and pointed protuberance means constructed for positionment within said bifurcated jaw portion for engaging an external arrowhead fin, said lever member and said retainer member being provided with mutually cooperable camming means for advancing said pointed protuberance means in a lateral direction whEreby the latter can protrude into an arrowhead fin, said pointed protuberance means being operatively associated with said elongate lever member and said retainer member.