Pipe cutting and beveling tool

Abstract

An apparatus for working pipes has a pair of hinged semicircular rings each having a uniform cross section interior channel. Clamp means permit joining the free ends of the rings to form a hoop clamping onto the outer circumference of a pipe. A continuous slot cut through the outer circumferential surface of each ring communicates with the interior channel therewithin. A wheeled bar rollable circumferentially within the interior channels has a rod extending radially outward through the slot, a tool support mounted on the upper end of the rod permits pipe working tools to be moved orbitably around a pipe.

What I claim is:  
     
         1 . An apparatus for working pipes comprising: 
 (a) a plurality of annular sector rings conformable around a circular cross-section pipe, each ring having a uniform cross-section internal channel concentric with the inner surface of said ring,    (b) means for fastening said rings together into a locking configuration concentric with a pipe, and    (c) means orbitably movable within said channels for supporting a holder for a pipe working tool.    
     
     
         2 . The apparatus of  claim 1  wherein said means for orbitably supporting a pipe working tool in said channels inhibits radial motion of said pipe working tool.  
     
     
         3 . The apparatus of  claim 1  wherein each said ring hsa a slot cut through its outer circumferential wall, said slot extending the entire arc length of said ring and communicating with said internal channel therewithin.  
     
     
         4 . The apparatus of  claim 4  wherein said slot is narrower than the width of said channels.  
     
     
         5 . The apparatus of  claim 4  wherein said means for orbitably supporting a holder for a pipe working tool in said channels comprises: 
 (a) an elongated arcuate bar, and  
 (b) an upwardly extending support post fastened to the upper, convex surface of said bar, whereby the outer transverse cross-sectional perimeter of said bar permits circumferential movement of said bar within said channels, with said post extending outward through said slot.  
 
     
     
         6 . The apparatus of  claim 5  wherein said elongated arcuate bar contains roller means facilitating circumferential movement of said parallel to the upper edge of said bar and tube, 
 (b) a boss extending outward from the support section of said tool support nearly to the flat inner side of said flat rectangular member, said boss having a concentric, blind tapped hole extending inward from the outer face, and  
 (c) a bolt adapted to insertion through the outer surface of said slot, whereby securing said bolt through said slot into said tapped hole in said boss secures said boss and integral tool support to said flat rectangular member.  
 
     
     
         11 . The apparatus of claim  8  wherein said tool support clamp is further defined as comprising: 
 (a) a hollow cylindrical upper section,  
 (b) a bushing rotably mounted within said hollow cylindrical upper section, and  
 (c) means for securing part of a tool within said bushing.  
 
     
     
         12 . An apparatus for working pipes comprising: 
 (a) a pair of semicircular rings each having a uniform cross-section channel concentric with the curvature of said rings, said channels extending the entire arc length of each ring,    (b) hinge means joining two ends of said rings permitting pivoting said rings into a circular ring configuration,    (c) clamp means for locing the two free ends of said rings in said circular ring configuraton, and    (d) means orbitably movable within said channels for supporting a holder for a pipe working tool.    
     
     
         13 . The apparatus of  claim 12  further comprising resilient semicircular liner rings conformally fastened to the inner, concave surfaces of said rings, said liner rings having an inner concave surface with a relatively high coefficient of friction.  
     
     
         14 . The apparatus of  claim 12  wherein each said ring hsa a uniform width opening cut through the outer circumferential wall of said ring, said opening extending the entire length of said ring and communicating with the channel therewithin.  
     
     
         15 . The apparatus of  claim 14  wherein said means orbitably movable within said channels for supporting a pipe working tool comprises: 
 (a) an elongated, arcuate bar having rolling means facilitating orbital movement of said bar within said channels, and  
 (b) an upwardly extending support member for holding a pipe working tool.  
 
     
     
         16 . The appartus of  claim 15  wherein said rolling means comprises at least one wheel rotatable with respect to said elongated bar.  
     
     
         17 . The apparatus of  claim 15  further comprising a tool support structure fastened to the upper end of said upwardly extending member, said tool support structure having a rotatable bushing adapted for holding essentailly cylindrical-body tools.  
     
     
         18 . The apparatus of  claim 17  wherein said rotatable bushing is slidably mounted on a track positioned at a desired acute angle relative to the center line of said rings.