Fish filletting knife

A fish filleting knife comprising:

• a. an elongated, generally planar blade,
• b. a pair of elongated extension members each pivoted adjacent one end thereof to the base end of said blade on an axis transverse to itself and normal to the plane of the blade, said axes being spaced apart transversely of the general extent of the blade, said members being pivotally movable between a first position generally coextensive with said blade, the then confronting surfaces of said members each having a groove formed therein for receiving a portion of said blade, whereby said members form a protective cover for said blade, and a second oppositely extending position, wherein said members form a handle for said blade,
• c. a locking pin fixed in said blade adjacent the pivotal axes of said extension members and normal to the plane of the blade, being transversely midway between said axes but spaced further from the point of the blade than said axes, whereby to be confined between said extension members when they are in said second position, and hence to inhibit pivotal movement of said blade relative to said extension members, and
• d. fastener means operable to secure the ends of said extension members opposite their pivoted ends releasably together when the latter are in either said first or said second position, whereby said extension members are caused to grip said locking pin firmly therebetween, said locking pin being operable normally to position said extension members in a relationship diverging away from their pivoted ends, said extension members being formed of resilient material whereby their more widely spaced ends may be manually pressed toward each other for connection by said fastener means, whereby the spring tension of said members applies a multiplied gripping force to the locking pin therebetween.