An arrow fletching, generally, is a vane-like appendage commonly found affixed, in multiples, to the aft end of an arrow shaft. The purpose of fletching is to stabilize the flight path of the arrow when shot, thereby drastically increasing an archer's accuracy and consistency over that of using an arrow without fletching. While fletching technology has certainly evolved alongside advancements in materials, arrow shaft designs, bow technologies, and so forth, the underlying concept of using a series of fletching to improve arrow flight is nothing new.
Thousands of years before Christ, archers were fashioning bird feathers onto wooden arrow shafts to gain consistent arrow flight paths. To facilitate the fashioning, they made use of materials such as sinew, catgut, and strips of hide in order to literally tie the fletching material to the arrow shaft. While today's arrows still exhibit the same time-proven form comprising a shaft with a point or load on one end and a nock and fletching on the other, modern day archers, of course, don't have to rely on the rudimentary arrow construction techniques employed by their ancestors.
Today's fletching materials of choice vary from real feather to synthetic feather to rubber, silicone and plastic. Regardless of the fletching material, however, most arrow fletching or vane designs in use today are simply glued onto an arrow shaft that is made of either aluminum or a carbon composite. In short, beyond materials and construction techniques, the overall design of a fletched arrow has changed very little in tens of thousands of years. So, what's needed in the art? A better technique of construction or attachment of the fletching to an arrow.
Arrows, and the fletching in particular, take a beating during use. Each time an arrow is released from a bow, chances are that the fletching will sustain damage from contact with previously shot arrows, targets, tree limbs, or the like. The predictable result of fletching damage is an ongoing expense for the archer. Some archers prefer to buy their arrows from an archery supplier already assembled and ready to be flung. Other archers, perhaps more particular in their preferences or, at least, more fortunate to have abundant time at their disposal, prefer to custom build their arrows. Further, an experienced archer, whether in competition or hunting, realizes that the environmental conditions, including wind, humidity, temperature, terrain, etc. can have a significant influence on the desired construction or configuration of the arrow. As such, it is unrealistic to have at the archer's disposal, an ample supply of each arrow configuration that may be required. It is these archery enthusiasts, the ones that choose to build their own arrows and/or arrows for other archers, who possess myriad devices and supplies useful for fletching, and re-fletching, arrows into an optimal configuration for the day's task.
When constructing an arrow, the positioning of fletching relative to the shaft of an arrow is critical. One simply doesn't squirt some glue down the shaft, stick some fletching on it, and then see how she flies. Rather, a fletching must be precisely positioned and then held in place while the glue dries before the arrow is repositioned for application of the next, precisely positioned fletching.
There are numerous devices known in the art that are useful when fitting an arrow with fletching. Generally, Bitzenburger describes in U.S. Pat. No. 3,330,551, as does Finlay in U.S. Pat. No. 5,211,382, a jig fitted with a spring loaded butterfly style clip that is operable to clamp a fletching and firmly position it relative to an arrow shaft while the fletching glue sets.
Variations of the butterfly clip style fletching jigs taught by Bitzenburger and Finlay are numerous in the market, but all share common shortcomings. For instance, with repeated use, the spring constant associated with the clip portion of jigs known in the art are prone to weakening such that they become unable to consistently grip fletching. Also, when placing a fletching into the spring-loaded clamp, in advance of setting the fletching to the arrow shaft, painstaking care must be taken that the fletching is positioned at the proper depth, angle and index mark within the clamp. Further, the force applied to fletching by way of the clamping force of the clip can damage the fletching as some fletching materials are fragile. Even further, the use of a clamp is generally cumbersome and inconvenient for the user. Moreover, clamp lengths may be specific to fletching lengths and fletching applications and, therefore, expensive clamps often must be swapped out each time a user changes fletching designs.
Further, a now popular fletching used for Recurve bows is the Mylar spin or curved fletching vanes. These fletching vanes pose several unique and difficult problems in mounting to the shaft of the arrow. First of all, the fletching vanes, as the name implies, are not flat but rather are naturally curled. This characteristic makes it difficult to mount to the surface of an arrow shaft as the curled edge must be attached along a straight line. In addition, this style of fletching does not include a base that mates to the arrow shaft but rather, the flat side of the fletching vane is directly attached to the arrow shaft. Further, these fletching vanes are typically attached to the shaft of the arrow using an adhesive, such as double-sided tape as a non-limiting example. The adhesive or double-sided tape must be mounted to the flat edge of the vane and then positioned at a particular location on the arrow shaft and thus, are side mounted. The typical fletching jigs on the market or not suitable for mounting this type of vane.
One technique for mounting of the Mylar spin vanes is completely accomplished manually by hand. An assembler will mark the locations on the arrow shaft for mounting of the vane, apply the double-sided adhesive to the surface of the vane and then attach the vane to the arrow shaft. This procedure is a very difficult and tedious task and, performance of this procedure in the field is even more exasperating. Other techniques that have been introduced include a jig for marking the shaft of the arrow to identify the location for application of the vanes and using a small, single vane jig to assist in holding the vane flat while the adhesive is applied thereto. The known techniques fall short of providing a comprehensive and reduced labor application of the Mylar vanes to an arrow shaft.
For all the reasons set forth above, as well as other reasons, prior art in the field of arrow fletching jigs are inadequate. Thus, there is a need in the art for a device operable to consistently and conveniently set Mylar curvy arrow fletching in a reliable manner.
An arrow fletching device that is configured to simultaneously mount a plurality of fletching vanes, such as three, Mylar vanes to the surface of an arrow shaft. In general, exemplary embodiment of the arrow fletching device or jig includes three arms, where each arm is used to hold and then secure a fletching to the surface of an arrow shaft. Each arm includes a clamp or holder into which the fletching can be inserted and held in position. Some embodiments allow for different sizes of fletching and/or the ability to move the fletching up or down within the holder to select the precise location on the arrow shaft that the user desires to affix the fletching.
Once the fletching vanes are in position, adhesive can be affixed to a mounting surface of the fletching. The arms can then be moved into position to adhere the fletching vanes to the surface of an arrow shaft.
More specifically, one embodiment of the fletching device is configured to install a side-mount fletching vane to the surface of an arrow shaft. The device or apparatus includes one or more arm assemblies that are used to hold the fletching and then force the fletching against the arrow for attachment. The arm assemblies include a table element and a clamp element. The table element includes an interface for receiving of the clamp element and once installed, the two elements cooperate to hold a fletching into position such that adhesive can be applied to a side surface of the fletching. At this point, the arm assembly can be applied to the surface of an arrow shaft thus causing the adhesive to adhere to the arrow shaft.
In some embodiments, the table element may include a side table surface and a center table surface and, the clamp element interfaces to the table element over the side table surface. Further, in some embodiments the center table surface is recessed such that when a fletching is inserted between the clamp element and the side table surface, a portion of the fletching proximate to the mounting side of the fletching extends from under the clamp element and into the recess of the center table surface. The recess includes a lip that provides support in holding the fletching in position. In addition, in a typical embodiment the center table surface is of sufficient width to receive the surface of an arrow shaft.
In some embodiments, three arm assemblies are utilized. In such embodiments, each arm assembly is mounted to a base and is rotatable between an open position and a closed position. In the closed position, the shaft of an arrow is clamped between the three arm assemblies.
Further, in such an embodiment, the arm assemblies are attached to a swivel mount and each swivel mount is attached to a sliding tray. A lever can then be used to actuate the sliding trays such that when actuated in a first direction, the sliding trays move towards the center of the base and when actuated in a second direction the sliding trays move away from the center of the base. When the arm assemblies are moved into a closed position, the lever can be actuated in a first direction to clamp the arrow with the arm assemblies.
Other embodiments may include more or less than three arm assemblies. In the three arm assemblies embodiment, the arm assemblies are oriented at 120 degree offsets from each other relative to the circumference of the arrow shaft.
In some embodiments, the arm assembly includes a left side table element and a right side table element. In such embodiments, the arm assembly is configured to receive the clamp element and hold a fletching on either side and thus allowing the fletching to be mounted for clock-wise or counter clock-wise rotation of the arrow. Thus, left or right wing vanes can be mounted in such embodiments.
Theses and other embodiments, features, aspects, etc. are presented in more detail in the detailed description and the claims.
The presently disclosed embodiments, as well as features and aspects thereof, are directed towards providing a device that can accurately and repeatedly position fletching against the shaft of an arrow, without a spring loaded butterfly clamp component, and securely hold the fletching thereto until a bond is attained between the fletching and arrow shaft via an adhesive.
In the open position as illustrated in
It should be noted that the size of the clamp element may be different and thus, may extend the entire length of the arm 204 or, may be configured to have a length commensurate with the length of the fletching. Thus, different clamp elements may be used for different fletching lengths. In some embodiments, the clamp element may be slightly bowed to provide additional pressure against the table surface for holding the fletching in place. In other embodiments, a compressible surface, such as foam may be attached to the underside of the clamp element to provide further pressure against the table surface for securing the fletching in position. It should also be appreciated that the fletching may be slid up and down the arm 204 to a desired position along the shaft of the arrow. The slots 410 assist the user in the alignment of the fletching vanes with each other. It will be appreciated that other embodiments are also anticipated. For instance, the clamp element 404 could be replaced by an integrated slot existing within the arm 204 through which the fletching can be slid, or the clamp element could be an elastic band stretching over the surface of the arm 204. Other variations are also anticipated.
Once a fletching has been loaded into each of the arms of the exemplary fletching jig, an arrow shaft can be positioned in the center of the fletching jig. The arms 204 and swivel mounts 236 can be actuated to move the arms into a parallel position with the arrow shaft and the positioning lever 210 can be moved to the left and thus, cause the sliding trays 234 to move towards each other. The slide clamp 212 can then be slid over the arms 204 and slid down to cause pressure to be applied against the shaft of the arrow and the center table surface 506 of the arms. As a result, the adhesive 704 on the fletching vanes is pressed against the surface of the arrow and thus secured to the arrow. The sliding clamp 212 can then be removed (after a delay if an adhesive that requires setting up is utilized) and the positioning lever can be moved to the right causing the sliding trays 234 to move distal from the arrow shaft. As the arms move away from the arrow, the fletching vanes slide out from under the surface of the clamp element 404 and remain attached to the shaft of the arrow.
In should also be appreciated that while the illustrated arm assemblies are shown as including a left side table and a right side table, thus allowing the fletching to be installed in either orientation, other embodiments may only include a left side table or a right side table.
It will be appreciated that the illustrated arm assemblies may hold any length of fletching vane that is equal to or less than the length of the clamping element. In addition, the clamping element may hold multiple fletching vanes arranged end to end and mount them to the arrow shaft simultaneously. In other embodiments, the table surface and clamp element may be configured such that multiple fletching vanes can be stacked upon each other and thus, by applying adhesive to only the top fletching on the stack, once installed and the arrow removed, the next fletching is then available and ready for receiving the adhesive and for being mounted.
The center table helps to wedge the fletching in place and the edges of the recess prevent the fletching from sliding out and it helps to maintain the fletching in the desired alignment. Further, the width of the center table 506 is sufficient to allow the surface of the arrow shaft 800 to come into contact with the adhesive and the center table 506 applies pressure towards the arrow shaft 800 so that the adhesive 704 firmly adheres to the surface of the arrow shaft 800. When the arrow shaft 800 is moved away from the arm assembly 204, after the adhesive has been applied to the arrow shaft 800, the fletching 100 slides out from between the clamp element 404 and the left side table 504.
As illustrated, the arrow shaft 800 is situated within the midst of the center tables 506 of each arm assembly 204. As illustrated in
In the illustrated embodiment, the arm assemblies 204 are positioned on 120 degrees orientation from each other around the shaft of the arrow 800 such that the fletching vanes are attached at the appropriate orientation. It will be appreciated that in other embodiments, more or less than three arm assemblies may be used. For instance, in one embodiment four arm assemblies may be utilized to create a four fletching bow. In such embodiments, the orientation of the arm assemblies would be at 90 degree offsets from each other and, the profile of the arm assemblies would be narrower to fit all four arm assemblies into the space. In other embodiments, less than three arm assemblies may be utilize. For instance, a single arm assembly embodiment may be used simply for replacement of damaged fletching vanes. In such an embodiment, the arrow shaft 800 may be encased in a stationary bracket that holds the arrow upright and in a desired position and, the single arm assembly can be prepared and then raised and compressed against the arrow shaft 800.
Although the various embodiments are illustrated as being in a tower configuration that stands upright, it should be appreciated that the principles of the present invention may be applied to a variety configurations of the device, including inverted, sideways oriented, etc. as non-limiting examples. In addition, rather than the arm assemblies pivoting towards and away from the arrow shaft, the arm assembles may only slide toward the shaft or may be slid down a tapering ramp towards contact with the side of the arrow shaft. In addition, spring loaded mechanisms may be used to facilitate moving the arms from an open to closed position. Further, the arms may be automatically moved between positions by the use of a gearing system driven by a motor.
It is also anticipated that the aspects of the present invention may also be utilized in an automatic, robotic production system in which the arrows, fletching and adhesives can be loaded into the arm assemblies and the jig, and the jig automatically actuated by a machine to operate the closure of the arm assemblies and application of the fletching.
It should be appreciated that such as system in which a processor operates based on a set of software or firmware instructions and the state of various external variables is in essence a machine in which the gears and interoperations of the machine are actually physical bits that are stored in memory components and are then used to configure the various elements, such as electronic switches in the form of transistors and other electronic circuits. As such, changing the software of such a machine is akin to changing the gearing and ratios within a clock and as such, a processor executing software instructions and monitoring the state of various inputs and controlling the state of various outputs is no different than any other machine.
The present arrow fletching jig has been described using detailed descriptions of embodiments thereof that are provided by way of example and are not intended to limit the scope of the device. The described embodiments comprise different features, not all of which are required in all embodiments of an arrow fletching device. Some embodiments of the arrow fletching device utilize only some of the features or possible combinations of the features. Variations of embodiments of an arrow fletching device that are described and embodiments of an arrow fletching device comprising different combinations of features noted in the described embodiments will occur to persons of the art.
It will be appreciated by persons skilled in the art that an arrow fletching device is not limited by what has been particularly shown and described herein above. Rather, the scope of an arrow fletching device with plate clamp is defined by the claims that follow.