Cutting – Tool or tool with support – Toothed blade or tooth therefor
Patent
1975-04-09
1976-09-21
Meister, J. M.
Cutting
Tool or tool with support
Toothed blade or tooth therefor
83835, B27B 538
Patent
active
039812162
ABSTRACT:
A high speed circular saw blade exhibiting low operating noise characteristics comprises a plurality of narrow expansion slots up to about 3/32 inches wide formed in the outer edge of the blade at a negative angle of about 5.degree.-15.degree. with respect to a line extending radially from the center of the blade to the slots. Two to five slots are provided in each blade, with the depth of each slot being between about 3/4 to 21/2 inches, depending on the diameter of the blade. Expansion holes are provided at the bottom of each slot, and a further reduction in noise level is achieved by plugging these holes with a resilient material such as solder or the like. With regularly spaced teeth the saw blade functions principally as a "cut-off" saw blade, but by removing every sixth tooth and placing the slots at the forward edges of the elongated spaces or deep gullets left by the missing teeth, the saw blade may be used as a combination cut-off and rip saw blade, with a substantial reduction in noise being achieved in both operations.
REFERENCES:
patent: 245090 (1881-08-01), Northway
patent: 464855 (1891-12-01), Clark
patent: 1723843 (1929-08-01), Chapin
patent: 3363617 (1968-01-01), Hoerer
Lemmon & Snoap Co.
Meister J. M.
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