Saws and saw teeth and blades therefor

A saw blade, comprising:

• a support member having at least one edge, and, spaced along that edge, a series of slots in each of which is secured a saw tooth;
• and in which each slot is contoured to provide an edge or edges to support a mating edge or edges on the tooth;
• and wherein a portion of the tooth extends at least partially into the slot, with a further portion extending beyond said slot and overlying a portion of a surface of said support member;
• and in which said tooth portion is thicker than said support member, so that a portion of said tooth extends beyond said surface of said support member to provide a bearing edge;
• and in which that part of each said slot that accommodates said portion of the tooth extending thereinto is generally sector-shaped, a curved part of the sector adjoining said bearing edge on said tooth.

A cutting tool, having:

• a cutting blade carrying a plurality of separate cutting teeth formed of hard material and located in an edge of said blade in suitable slots;
• a support member relative to which said blade moves during operation of the tool;
• and
• a support surface or surfaces on said support member with which a support edge or edges on said blade engages or engage during operating of the tool, said support surface or surfaces being parallel to the cutting edge of said blade.

A hand-held power saw, comprising:

• first and second saw blades;
• each said saw blade comprising a support member having at least one edge, and, spaced along that edge, a series of slots in each of which is secured a saw tooth, and in which each slot is contoured to provide an edge or edges to support a mating edge or edges on the tooth and wherein a portion of the tooth extends at least partially into the slot, with a further portion extending beyond said slot and overlying a portion of a surface of said support member;
• said saw blades being guided for longitudinal reciprocation in a support;
• and
• the saw teeth having bearing surfaces which coact with the edge surfaces of said support to support said saw blades.

A power saw, comprising:

• first and second saw blades;
• each of said saw blades comprising a support member having at least one edge, and, spaced along that edge, a series of slots in each of which is secured a saw tooth, and in which each slot is contoured to provide an edge or edges to support a mating edge or edges on the tooth and wherein a portion of the tooth extends at least partially into the slot, with a further portion extending beyond said slot and overlying a portion of a surface of said support member;
• the saw blades being guided for longitudinal reciprocation in a support;
• and
• each saw blade having an external support member which coacts with said support to support the saw blades.

A saw blade, comprising:

• a plurality of saw teeth;
• a support member having at least one edge, and, spaced along that edge, a series of slots in each of which is secured a respective one of said saw teeth;
• each slot being contoured to provide an edge or edges to support a mating edge or edges on the respective tooth;
• and
• each tooth comprising a cutting portion, a body portion contoured to provide a platform located centrally of a longitudinal axis of the tooth and located in a respective one of said slots, and support shoulders lying transversely of that axis and extending beyond a portion of said platform and overlying surface portions of said blade.

A saw blade, comprising:

• a saw blade member having opposite side faces connected by at least one edge, and spaced apart slots along said edge;
• a plurality of saw teeth secured individually in the slots;
• each of said saw teeth comprising a cutting portion extending from a body portion;
• said body portion having a free standing central platform raised from two areas of reduced thickness one on each side of the central platform;
• and
• each said central platform engaging in a respective one of said slots with the two areas of reduced thickness associated with this central platform overlying portions of one of said side faces on opposite sides of the respective slot.