Roofing shingle angle cutter

A shingle cutting tool for cutting a shingle having a longitudinal edge, said shingle cutting tool making a cut across the shingle at a selectable angle transverse to the longitudinal edge thereof, said shingle cutting tool comprising:

• a guide member, said guide member having a substantially upright surface for guiding the longitudinal edge of the shingle;
• and
• a cutting assembly;
• said cutting assembly being pivotally attached to said guide member and extending outward therefrom;
• said cutting assembly comprising:
• a cutting base member;
• a cutting blade, said cutting blade having a cutting edge, said cutting edge opposing said base member;
• a reciprocating guide means for guiding said cutting blade in a reciprocating fashion within a plane extending from a cutting base;
• and
• a manual pressure means for manually exerting a pressure on said cutting blade to thereby bring said cutting edge into contact with said cutting base member;
• a cutting stroke adjustment member attached to the pressure means and to the cutting blade;
• said manual pressure means comprises at least a pair of lever arms, one of said pair of lever arms being connected to said cutting base member and the other of said pair of lever arms being connected to said cutting blade;
• said reciprocating guide means comprises a pin positioned at each end of said cutting base member and a slot positioned at each end of said cutting blade, one each of said pins being disposed within one each of said slots;
• and
• said shingle cutting tool additionally comprises retaining means for retaining said cutting assembly at a selected transverse angle with respect to said guide member.

A shingle cutting tool for cutting a shingle having a longitudinal edge, said shingle cutting tool making a cut across the shingle at a selectable angle transverse to the longitudinal edge thereof, said shingle cutting tool comprising:

• a guide member, said guide member having a substantially upright surface for guiding the longitudinal edge of the shingle;
• and
• a cutting assembly;
• said cutting assembly being pivotally attached to said guide member and extending outward therefrom;
• said cutting assembly comprising:
• a cutting base member;
• a cutting blade, said cutting blade having a cutting edge, said cutting edge opposing said base member;
• a reciprocating guide means for guiding said cutting blade in a reciprocating fashion within a plane extending from a cutting base;
• and
• a pressure means for exerting a pressure on said cutting blade to thereby bring said cutting edge into contact with said cutting base member;
• a cutting stroke adjustment member attached to the pressure means and to the cutting blade;
• said pressure means comprises a pneumatic cylinder;
• said reciprocating guide means comprises a pin positioned at each end of said cutting base member and a slot positioned at each end of said cutting blade, one each of said pins being disposed within one each of said slots;
• said shingle cutting tool additionally comprises retaining means for retaining said cutting assembly at a selected transverse angle with respect to said guide member;
• said retaining means comprises a wing nut;
• and
• said shingle cutting tool additionally comprises a plurality of graduated measurement marks extending along a longitudinal axis of said guide member.