Archery sight apparatus that mounts on a bow

Abstract

An archery sight mounting apparatus for a bow is characterized by unique tension adjustment assemblies for an elevation carriage connected with an elevation bar and for a windage carriage connected with the elevation carriage. The tension assemblies both include spaced pairs of synthetic plastic gibs supported by surfaces of the elevation bar, elevation carriage and windage carriage and arranged internally of the mounting system. The gibs facilitate sliding movement of the elevation carriage relative to the elevation bar and of the windage carriage relative to the elevation carriage for full adjustability of an archery sight on a bow. The tension assemblies further include adjustment screws which adjust the tension applied to the gibs and thus the freedom of movement of the carriages. Both carriages include yokes which are displaceable relative to the respective carriages to adjust the tension. Springs between the yokes and carriages deaden internal vibrations within the mounting apparatus for increased accuracy.

What is claimed is: 
     
         1 . An archery sight apparatus that mounts on a bow, comprising
 (a) an elevation bar having a longitudinal axis and connected with the bow;   (b) a sight mounting assembly arranged on and displaceable longitudinally relative to said elevation bar, said sight mounting assembly including at least one support surface; and   (c) a first tension system for tensioning said sight mounting assembly relative to said elevation bar, said first tension system including at least one first gib arranged internally on said at least one support surface between said elevation bar and said sight mounting assembly and a displacement device for displacing said sight mounting assembly relative to said elevation bar in a direction normal to the longitudinal axis, whereby a freedom of movement of said sight mounting assembly along said elevation bar is provided.   
     
     
         2 . Apparatus as defined in  claim 1 , wherein said sight mounting assembly comprises an elevation carriage. 
     
     
         3 . Apparatus as defined in  claim 1 , wherein said sight mounting assembly comprises a windage carriage. 
     
     
         4 . Apparatus as defined in  claim 2 , wherein said at least one support surface is arranged on said elevation carriage and normal to the longitudinal axis. 
     
     
         5 . Apparatus as defined in  claim 2 , wherein said first tension system is adjustable. 
     
     
         6 . Apparatus as defined in  claim 5 , wherein said first tension system includes an elevation tension cam shaft connected with said elevation carriage for biasing said elevation carriage relative to said elevation bar. 
     
     
         7 . Apparatus as defined in  claim 6 , wherein said first tension system further includes an elevation yoke adjustably connected with said elevation carriage, whereby said elevation yoke is drawn toward said elevation carriage upon rotation of said elevation cam shaft in a first direction to increase tension between said elevation carriage and said yoke and said elevation yoke is moved away from said elevation carriage upon rotation of said elevation cam shaft in a second direction to decrease tension between said elevation carriage and said yoke. 
     
     
         8 . Apparatus as defined in  claim 7 , wherein said elevation cam shaft includes a cam surface between said elevation carriage and said elevation yoke. 
     
     
         9 . Apparatus as defined in  claim 8 , wherein said first tension system further includes a locking lever connected with a head of said elevation cam shaft externally of said elevation carriage, said locking lever being manually operated to rotate said cam surface to adjust the tension applied by said cam surface to said elevation yoke and to said first gibs against said elevation bar. 
     
     
         10 . Apparatus as defined in  claim 4 , wherein said elevation carriage includes a pair of parallel spaced support surfaces which support a pair of said first gibs, respectively. 
     
     
         11 . Apparatus as defined in  claim 10 , and further comprising at least one second gib arranged internally between said elevation bar and said elevation yoke. 
     
     
         12 . Apparatus as defined in  claim 11 , wherein said elevation yoke includes a pair of parallel spaced support surfaces which support a pair of said second gibs, respectively. 
     
     
         13 . Apparatus as defined in  claim 12 , wherein said elevation bar contains support surfaces for receiving said first and second gibs. 
     
     
         14 . Apparatus as defined in  claim 12 , wherein said first tension system further includes at least one spring arranged between said elevation carriage and said elevation yoke to exert constant internal pressure on said first and second gibs and deaden vibrations within said elevation carriage. 
     
     
         15 . Apparatus as defined in  claim 8 , wherein said elevation yoke support surfaces are arranged in parallel spaced relation from said elevation carriage support surfaces. 
     
     
         16 . Apparatus as defined in  claim 7 , and further comprising a windage carriage adjustably connected with said elevation carriage for displacement in a direction normal to a direction of displacement of said elevation carriage relative to said elevation bar. 
     
     
         17 . Apparatus as defined in  claim 16 , and further comprising a second tension system for providing tension between said windage carriage and said elevation carriage, said second tension system including at least one third gib arranged internally between said windage carriage and said elevation carriage and perpendicular to said at least first gib. 
     
     
         18 . Apparatus as defined in  claim 17 , wherein said second tension system further includes a windage yoke adjustably connected with said windage carriage. 
     
     
         19 . Apparatus as defined in  claim 18 , and further comprising at least one fourth gib arranged between said windage carriage and said windage yoke. 
     
     
         20 . Apparatus as defined in  claim 19 , wherein said second tension system includes a windage tension screw connected with said windage carriage for displacing said windage carriage toward and away from said windage yoke. 
     
     
         21 . Apparatus as defined in  claim 20 , wherein said second tension system further includes at least one spring arranged between said windage carriage and said windage yoke to exert constant internal pressure on said third and fourth gibs and deaden vibrations within said windage carriage. 
     
     
         22 . Apparatus as defined in  claim 21 , wherein said windage carriage includes a pair of parallel spaced surfaces which support a pair of said third gibs, respectively. 
     
     
         23 . Apparatus as defined in  claim 22 , wherein said windage yoke includes a pair of parallel spaced support surfaces which support a pair of said fourth gibs. 
     
     
         24 . Apparatus as defined in  claim 2 , and further comprising a single elevation cam shaft for adjusting the tension within said elevation carriage. 
     
     
         25 . Apparatus as define in  claim 16 , and further comprising a single windage screw for adjusting the tension within said windage carriage.