Shingle cutting device

Abstract

A shingle cutting device for use in roof valleys includes a base body having an upper surface and a lower surface and a handle device mounted on the upper surface. An inverted, generally C-shaped roof valley-engaging guide channel is formed on and extends along the lower surface of the base body, and a blade support arm is mounted on and extends outwards from the base body, the blade support arm having an inner end and an outer end. A blade support device such as a blade clamp is mounted on the blade support arm adjacent the outer end thereof and a shingle cutting blade is removably mounted in the blade support device and extends downwards therefrom, the shingle cutting blade operative to engage and cut shingles to form a straight cut shingled roof line which extends generally parallel with the adjacent roof valley.

1 . A shingle cutting device for use in roof valleys comprising: 
 a base body having an upper face and a lower surface;    handle means mounted on said base body;    an inverted guide channel formed on and extending along said lower surface of said base body, said inverted guide channel operative to engage a roof valley on which said shingle cutting device is being used;    a blade support arm mounted on said base body, said blade support arm having an inner end mounted on said base body and an outer end, said blade support arm extending outwards from said base body;    blade support means mounted on said blade support arm adjacent said outer end of said blade support arm; and    shingle cutting blade means removably mounted in said blade support means and extending downwards therefrom, said shingle cutting blade means operative to engage and cut shingles and shingle ends to form a straight cut shingled roof line generally parallel with a roof valley.    
   
   
       2 . The shingle cutting device of  claim 1  wherein said base body and said blade support arm are integrally formed as a single unit.  
   
   
       3 . The shingle cutting device of  claim 1  wherein said inverted guide channel on said base body is generally C-shaped in cross-section.  
   
   
       4 . The shingle cutting device of  claim 1  wherein said inverted guide channel on said base body is generally V-shaped in cross-section.  
   
   
       5 . The shingle cutting device of  claim 4  further comprising a ratchet connection mounted on said base body interposed between and connecting said base body and said blade support arm, said ratchet connection operative to permit the angle of said blade support arm relative to said base body to be adjusted, whereby different roof angles and roof positions may be accommodated.  
   
   
       6 . The shingle cutting device of  claim 1  wherein said blade support arm is angled upwards relative to said base body, said blade support arm angled between five and thirty degrees (5° and 30°) upwards relative to said upper face of base section.  
   
   
       7 . The shingle cutting device of  claim 1  wherein said blade support means comprises a generally rectangular bar mountable to said blade support arm, said blade securement device being movable to cover and secure said shingle cutting blade means upon said shingle cutting blade means being mounted on said outer end of said blade support arm.  
   
   
       8 . The shingle cutting device of  claim 1  wherein said blade support means comprises a snap-fit means operative to releasably secure said shingle cutting blade means on said outer end of said blade support arm.  
   
   
       9 . A shingle cutting device for use in roof valleys having an upwardly extending ridge extending parallel with the centerline of the roof valley, said shingle cutting device comprising: 
 a base body having an upper face and a lower surface;    handle means mounted on said upper face of said base body;    an inverted guide channel having a generally C-shaped cross-sectional shape, said inverted guide channel formed on and extending along said lower surface of said base body, said inverted guide channel operative to engage an upwardly extending ridge extending parallel with the centerline of the roof valley on which said shingle cutting device is being used;    a blade support arm mounted on said base body, said blade support arm having an inner end mounted on said base body and an outer end, said blade support arm extending outwards from said base body;    blade support means mounted on said blade support arm adjacent said outer end of said blade support arm; and    shingle cutting blade means removably mounted in said blade support means and extending downwards therefrom, said shingle cutting blade means operative to engage and cut shingles and shingle ends to form a straight cut shingled roof line which extends generally parallel with an upwardly extending ridge which extends parallel with the centerline of the roof valley on which said shingle cutting device is being used.    
   
   
       10 . The shingle cutting device of  claim 9  wherein said base body and said blade support arm are integrally formed as a single unit.  
   
   
       11 . The shingle cutting device of  claim 9  wherein said blade support arm is angled upwards relative to said base body, said blade support arm angled between five and thirty degrees (5° and 30°) upwards relative to said upper face of base section.  
   
   
       12 . The shingle cutting device of  claim 9  wherein said blade support means comprises a generally rectangular bar mountable to said blade support arm, said blade securement device being movable to cover and secure said shingle cutting blade means upon said shingle cutting blade means being mounted on said outer end of said blade support arm.  
   
   
       13 . The shingle cutting device of  claim 9  wherein said blade support means comprises a snap-fit means operative to releasably secure said shingle cutting blade means on said outer end of said blade support arm.