Variable tooth saw blade
First Claim
1. A saw blade having a toothed edge comprising a plurality of recurrent groups of teeth;
- each group including a series of teeth which are set angularly and alternately sidewise the same amount and which first decrease progressively in gullet depth and pitch and then increase progressively in gullet depth and pitch, said teeth having varying rake angles, the shorter teeth having a more positive rake angle than the longer teeth.
3 Assignments
0 Petitions
Accused Products
Abstract
A saw blade is provided with an arrangement and form of teeth which reduces vibration, cutting noise and chatter, and which enhances cutting speed and blade life. In addition to having teeth arranged in recurrent groups wherein the teeth alternately decrease and increase in gullet depth and pitch with the tips of the teeth in alignment and being set laterally to the same extent, the smaller teeth are given a positive rake angle which increases with decrease in tooth size so that the angle of attack of the smaller teeth is sharper thereby causing them to dig in and remove a larger clip, thereby tending to equalize the size of the chips removed by the different teeth.
90 Citations
10 Claims
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1. A saw blade having a toothed edge comprising a plurality of recurrent groups of teeth;
- each group including a series of teeth which are set angularly and alternately sidewise the same amount and which first decrease progressively in gullet depth and pitch and then increase progressively in gullet depth and pitch, said teeth having varying rake angles, the shorter teeth having a more positive rake angle than the longer teeth.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- 9. A saw blade having a toothed edge comprising a plurality of recurrent groups of teeth, each group comprising a series of teeth of varying gullet depth and pitch, the largest tooth being an unset last tooth of the group and being preceded by the remaining teeth of the series which first decrease progressively in gullet depth and pitch and then increase progressively in gullet depth and pitch, the remaining teeth being set angularly and alternately sidewise an amount sufficient so that said remaining teeth all extend laterally to the same extent so as to cut a uniform key throughout, said remaining teeth being formed with a positive rake angle which increases as the size of the tooth decreases and decreases as the size of the tooth increases.
Specification