Abstract
An archery arrow trajectory evaluation device, that is suspended from above by a pair of cords. Holds a paper roll above a framed structure. The paper feeds down in between the front and back frame. Frames are held together with hollow screws and nuts in each corner. Each nut is adjustable allowing the user to tighten the front and back frame together to hold the paper taut on four sides, but still allowing the paper to pass through from the top of the frame down through to the bottom. Once the paper is held securely between the frames an arrow may be shot through the center of the frames to determine the trajectory of the arrow. If the bow is tuned the arrow will pass through the paper and the tear left behind will be symmetrical. The tear will indicate to the user what adjustments are needed.
Claims
1. An archery arrow trajectory evaluation device, with the use of taut paper the trueness of the arrow flight can be identified, the device comprising: a frame designed to suspend from above, is achieved by a pair of laterally spaced cords that are parallel to each other that descend downward to hold and suspend a roll of paper above a frame assembly, the cord lengths are adjustable to accommodate to the height of the user; a frame assembly consists of a front frame and a back frame, both have holes in the corners that match up so a hollow screw can be placed into the front frame and line up with the back frame and then tighten together with a hollow nut in each corner; a rod is used to hold a roll of paper, the paper is held horizontally above the frame assembly by loops in the cord above the vertical hollow rod and below the cord stopper, the paper is fed through the top section of the front and back frame down through the frame assembly and out the bottom, at this point the user can pull on the exposed paper to index the paper as needed.
2. The device of claim 1 further comprising a removable rod to allow for replacement paper rolls thereon.
3. The device of claim 1 in which the front frame is intentionally designed to be slightly taller than the back frame to allow for the user to feed in the paper in between the front and back frame.
4. The device of claim 1 in which the front frame has a beveled edge integrated into the back side of lower edge of the window to allow paper with tears to pass through easier.
5. The device of claim 1 in which the back frame bottom section of the window area is lower than the front frame, this works in conjunction with claim 4 to allow paper with tears to pass through without getting stuck or impeded.
6. The device of claim 1 in which the back frame is shorter than the front frame is intentionally done to make it easier for the user to feed the paper through the front and back frame.
7. The device of claim 1 in which the paper as it passes through the front and back frame is held on all four sides and the paper cannot slide out because the screws act as stopping points and as guides for the paper, the user can adjust the tension of the paper by tightening or loosening the nuts on all four corners this makes the paper taut but still allows the user to pull the paper with minimal effort.
Description
BRIEF DESCRIPTION OF DRAWINGS
[0010] The Invention is more fully understood by referencing the following detailed description when read in conjunction with the accompanying drawings in which:
[0011] FIG. 1, depicts a detailed front view of the paper tuning device, two laterally spaced cords coming down from above, a roll of paper held above the frame assembly, the cord assembly that holds the paper roll and frames is also illustrated in this drawing;
[0012] FIG. 2 is a back view of the tuning device, key features illustrated in this view include the back frame is offset at the top and bottom to allow the paper to be fed into and out of the tuner with ease, also depicted in this drawing are the adjustments knobs with the hollow screws allowing the cords at the top of the frame assembly to pass through;
[0013] FIG. 3 offers a complete view of the device including how it is attached to an overhead structure like a ceiling;
[0014] FIG. 4 gives a closer look at the section of the tuner that holds the paper roll above the front and back frames;
[0015] FIG. 5 the depiction emphasizes the back view of the device showing how that paper passes through from the top of the frames down to the bottom of the frames where it can be pulled out by the user, this view illustrates how the paper is held on all four sides of the frames;
[0016] FIG. 6 is a look at the back bottom corner of the device, it focuses on depicting the back frame is shorter than the front frame, this illustration also presents a view of the paper as it passes through the front and back frame;
[0017] FIG. 7 offers a closer look at the bottom section of the window, the view is presented from the back side of the device, this view leaves out the paper so it can be observed that the front frame extends higher than the back frame, also illustrated here is a beveled edge on the back section of the front frame at the lower edge of the window;
[0018] FIG. 8 is a view of the front frame;
[0019] FIG. 9 is a view of the back frame;
DETAILED DESCRIPTION OF THE INVENTION
[0020] FIG. 1 and FIG. 4 illustrate the mechanism for holding the paper roll 111 and frames 101, 103. The cord 117 as it descends from above passes through the adjustable cord stopper 109 then through a hollow rod 113 then passes through the front of the device through a hollow screw 105 then out the back of the device through the hollow screw 105 and adjustable nut 107. The cord then goes back through the hollow rod 113 and back through the cord stopper 109. This is the second location where the user can adjust the height of the tuning device to tailor to their individual stance and height. The rod 110 holding the paper roll 111 is held securely in place by the cord 117 in the front and back of the rod while the adjustable cord stopper 109 holds it in place from above, and the hollow rod 113 holds it in place from below. The front frame 101 and the back frame 103 are held together with four hollow screws 105 that are inserted from the front frame and exit out the back frame and secured together with a hollow nut 107. The paper 111 is inserted in between the top of the front frame 101 and the back frame 103. It then passes through until exiting out the bottom of the frames. FIG. 5 illustrates a difference in the height at the top of the front frame 101 and back frame 103. This is intentional to allow for easier insertion of the paper by the user. In FIG. 6 it illustrates a space between the bottom of the back frame 103 and the front frame 101. This space is intentional to allow the user to remove the paper. FIG. 5 demonstrates how the paper 111 is securely held in place on all four sides of the device. This is critical for keeping the paper taut for paper tuning. The user can adjust the tension on the paper with the screws 105 and nuts 107 in each corner. The paper is secured by the front 101 and back 103 frames on all four sides with a considerable amount of the surface area holding the paper in place, so the frames only need to be tightened to a point at which the paper pulls out with minimal effort by the user. The paper cannot escape the device once it has been inserted from the upper end to the lower end. The screws 105 act as stops on each side and help guide the paper through the frames. FIG. 7 illustrates the bottom section of the back side of the frames. The bottom ledge of the window on the front frame 101 has a beveled edge 112 that is integrated into the back side of the front frame. The lower section of the back frame 103 window ledge is lower than the front frame. This is intentional to help facilitate the passage of paper with tears through the bottom section of the front 101 and back frames 103. FIG. 5 and FIG. 6 illustrate the passage of the paper 111 from the base of the frames. The user will pull on this section of the paper to advance the paper to remove the utilized segment with tears from the window section of the device.
[0021] It is understood that the preceding description is given merely by way of illustration and not in limitation of the invention and the various modifications may be made thereto without departing from the spirit of the invention as claimed.
