Band saw for cutting carcasses or the like

Details Band saw for cutting carcasses or the like Band saw for cutting carcasses or the like

1984-05-24

1986-07-01

Abercrombie, Willie G.

83819, 83814, A22B 520, B27B 1310

Patent

active

045971323

ABSTRACT:
A band saw wherein one of the pulleys for an endless band-like blade is movable toward and away from the other pulley to relax the tension upon or to tension the blade. The one pulley is permanently biased away from the other pulley by a relatively weak spring whose bias can be overcome by hand to facilitate the removal of a blade or the application of a fresh blade. In addition, the one pulley is normally biased away from the other pulley with a pronounced force by a package of dished springs whose bias upon the one pulley can be interrupted by a single-acting cylinder and piston unit whose piston is installed between the dished springs and a reciprocable carriage for the one pulley. The dished springs react against a support for the pulleys and bear against the piston. Two twisting units are provided to maintain a central portion of one of the two elongated reaches of the blade in a plane which is normal to the axes of the pulleys, and such twisting units can be pivoted or otherwise moved into and from engagement with the one reach by fluid-operated motors.

REFERENCES:
patent: 4327621 (1982-05-01), Voorhees et al.

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