Dust seal for rotatable shaft passing through a bin wall

Claim 1

In a dust seal for use between a rotatable shaft and a passageway through a bin wall through which said shaft extends with said bin wall being divided along a generally horizontal line into upper and lower sections, a. a split sleeve having at least two adjacent sections adapted to surround said shaft with a snug, rotatable fit, b. a plate-like section carried by each section of said split sleeve and extending laterally therefrom with adjacent edges of adjacent platelike sections abutting each other along the line dividing the bin wall into upper and lower sections and defining a composite plate of a size and shape to completely surround said passageway through the bin wall and overlie the adjacent portion of said bin wall surrounding said passageway, c. means securing said adjacent plate-like sections to each other to provide a dust-tight connection therebetween, d. at least two threaded members carried by said adjacent portion of said bin wall and extending outwardly therefrom toward said plate-like sections, and e. elongated slots in said plate-like sections in position to receive said threaded members with each said elongated slot being of a width and length greater than the diameter of said threaded members and extending in horizontal planes above and below said shaft to permit lateral adjustment of said plate-like sections both vertically and horizontally relative to said bin wall.