Bandmill mechanism

In a bandmill having a column and a frame respectively supporting first and second arbor-supported wheels carrying and driving an endless saw, an arbor for said first wheel, said arbor including a central section adapted to receive said first wheel for rotation about a first axis and opposite end sections each coaxial with said central section;

• a pair of mechanisms on each side of said first wheel adapted to move said first wheel relative to the second wheel in a plane including said wheels to thereby accommodate fluctuations resulting from saw-loading conditions, each mechanism comprising:
• (a) a vertical post having one end slidably received within said column;
• (b) a horizontal plate fixed to the opposite end of said post outside said column;
• (c) an arbor support fixedly mounted to said plate and having a hinge portion with a pivotal axis, said hinged portion projecting within a corresponding end section of said arbor to a point such that said pivotal axis extends within said arbor but eccentric to said first axis;
• each said end section having a recess to receive said hinge portion therein and being so shaped as to allow pivotal movement of said arbor about said eccentric axis;
• (d) a tension arm having a first portion fixedly attached to said arbor and a second portion extending lengthwise over said plate;
• and
• (e) resilient means located between said second portion of said tension arm and said plate for causing pivotal movement of said arbor about said eccentric axis to accommodate said fluctuations.