Abstract: Disclosed is a method of making a taxidermy fish body insert piece. An outline of the fish body is traced on paper, and the outline is reduced marginally a measured amount. A bendable centerboard is made from the reduced outline. Arcuate contour wires are formed on the fish body of actual half-girths at various positions. The wires are traced on a card, and the tracings are reduced the same measured amount. The card is cut on the reduced tracings to produce a contour gauge card having contour cavities into an edge thereof. A fish body insert piece is built up of excelsior wrapped with string, building a half-body upon each side of the centerboard, using the contour gauge card to control the size and shape thereof.

Abstract: An air pre-cleaner of the centrifugal type has a cylindrical housing with an annular louvred air entry structure at a first end thereof and coaxial therewith, and has an inner cylinder forming with the housing and the entry structure an annular separation chamber coaxial with, adjacent to, and axially inward of the entry structure. The inner cylinder forms with the housing a short cylindrical transfer chamber coaxial with, adjacent to, and axially outward of the separation chamber. A ring flange is disposed at the inner end of the inner cylinder along the inner ring of the annular separation chamber lying in a plane normal to the axis of the chambers. A dirt discharge slot is disposed in the side wall of the housing with one end of the slot substantially radially outward from the ring flange, the slot extending along a major portion of the axial length of the separation chamber.