type commonly used in the industry this may for example be of the type manufactured by albany international corp assignee herein model no kf 35 kf 35a or pneuflex u00ae which can be of rigid or flexible design depending upon application doctor blade 24 is removable and therefore replaceable when worn out the position of support 16 is adjustable in relation to roll 10 to adjust the position of blade 24 holder 22 may be adjustable in nature to further adjust the position of blade 24 and to properly bias it with respect to the roll 10 doctor blade 24 is shown engaging the surface 12 at approximately a 30 u00b0 angle thereto and runs the length of the roll 10 this angle can vary considerably depending upon the needs of the particular application a leading edge doctor blade assembly 26 is provided upstream of blade 24 this assembly 26 includes widely spaced gussets 28 one shown mounted along support structure 16 for example on the order of 48 34 via mounting bolts 30 which allow the removal of the assembly 26 for repair or replacement or the shimming of assembly 26 the mounting arrangement may include slots in the gussets 28 and an accompanying jack screw assembly 32 to further adjust its position coupled to the gussets 28 is a support plate 34 which supports a.