Offset bandsaw

Details Offset bandsaw Offset bandsaw

1988-12-05

1991-03-26

Phan, Hien H.

Cutting

By endless band or chain knife

Including contiguous oppositely moving knife portions

83661, 83817, 83820, B27B 1310

Patent

active

050019570

ABSTRACT:
An offset bandsaw uses a drive pulley and a second pulley which is angularly offset from the first drive pulley. A bandsaw blade is formed by twisting the blade 360.degree. before welding the two ends together to form a continuous belt. The combination of the offset rollers and the 360.degree. twist permit the bandsaw blade to follow a more natural path which improves blade life. Rollers may be provided intermediate the drive pulley and top pulley to position the bandsaw blade portions in the same plane. Alternatively one may provide a third or fourth pulley to create a precision saw which can cut tight radii in a workpiece and make sizeable square cuts through stock of any length.

REFERENCES:
patent: 1461004 (1923-07-01), Napier
patent: 1916903 (1933-07-01), Wine
patent: 2355124 (1944-08-01), Testo
patent: 3390598 (1968-07-01), Sands et al.
patent: 3474693 (1969-10-01), Wilkie et al.
patent: 3518909 (1970-07-01), Blue
patent: 3668961 (1972-06-01), Blue

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