Chisel blade with sides configured for cutting

摘要

A chisel includes a blade joined with a handle configured to be struck by a striking instrument. The blade includes a front beveled cutting edge portion at its forward end, a beveled side cutting edge portion along one longitudinal side of the blade, and a strike surface along an opposite, longitudinal side. The blade also has a main body portion that narrows in thickness as it extends in a forward direction from a relatively rearward portion thereof to the front beveled cutting edge portion and that narrows in thickness as it extends in a lateral direction from the strike surface towards the beveled side cutting edge portion. The beveled side cutting edge portion has a surface forms an angle with a surface of the main body portion.

主权项

1. A chisel comprising:
a handle; a back end of the handle configured to be struck by a striking instrument; an elongated blade joined with the handle, the blade including a main body portion, a front beveled cutting edge portion at a forward end thereof, a beveled side cutting edge portion along a first longitudinal side of the blade, and a strike surface along a second longitudinal side of the blade opposite the first longitudinal side, the strike surface configured to be struck by an impact tool and having a hardness of about 38 HRC to about 44 HRC; wherein the main body portion narrows in thickness as it extends in a forward direction from a relatively rearward portion thereof towards the front beveled cutting edge portion, and that narrows in thickness as it extends in a lateral direction from the strike surface towards the beveled side cutting edge portion, wherein the beveled side cutting edge portion comprises a surface that forms an angle with a surface of the main body portion, wherein the front beveled cutting edge portion comprises a surface that intersects and forms an angle with the surface of the main body portion, and wherein the front beveled cutting edge portion terminates at a front cutting edge, and wherein the front beveled cutting portion further comprises a back edge formed at an angle relative to its front cutting edge.