Abstract: A lure system with an adaptable insitu bill assembly is provided. In a preferred embodiment, a bill assembly consists of bill base detachably interconnected with a bill extender. The bill base is fixedly attached to the face of the head portion of the lure. In accordance with the concept of the present invention, the leading edges of the bill base are shaped to correspond to the configuration of the recess region of the bill extender, contained on the upper surface thereof. This recess region is preferably constructed with a longitudinal channel, and pair of substantially hemispherical cavities.Thus, the recess region of bill extender receives the corresponding leading edges of the bill base. Preferably, the keyway contained on the bill base is slidably inserted into the corresponding channel contained in the recess of the bill extender.

Abstract: The structure and the process for making a metallic sandwich structure in which metal worksheets, preferably made from titanium alloy, are joined in a preselected pattern by an intermittent or discontinuous weld. The joined sheets are sealed by a continuous weld to form an expandable envelope. Application of inert gas pressure to the envelope in a limiting fixture superplastically produces the sandwich structure as the expanded structure diffusion bonds to itself or other worksheets. Core configuration of the structure is determined by the intermittent weld pattern. Face sheets of the sandwich structure may be formed from one sheet of the envelope or may be inserted in the limiting fixture and the envelope expanded against the face sheets. Additionally, the face sheets may be preformed or formed concurrently with the core to produce the desired core and sandwich shape in a single operation.

Abstract: The structure and the process for making a metallic sandwich structure in which metal worksheets, preferably made from titanium alloy, are joined in a preselected pattern by an intermittent or discontinuous weld. The joined sheets are sealed by a continuous weld to form an expandable envelope. Application of inert gas pressure to the envelope in a limiting fixture superplastically produces the sandwich structure as the expanded structure diffusion bonds to itself or other worksheets. Core configuration of the structure is determined by the intermittent weld pattern. Face sheets of the sandwich structure may be formed from one sheet of the envelope or may be inserted in the limiting fixture and the envelope expanded against the face sheets. Additionally, the face sheets may be preformed or formed concurrently with the core to produce the desired core and sandwich shape in a single operation.

Abstract: A range finding gunsight suitable for military usage is provided having a rear portion with a baseplate member mounted for windage adjustment and having an integral upright member provided with an elongated oval shaped aperture. A slide member having a conventional circular peep aperture is mounted on the upright member and is vertically adjustable, the portion of the oval shaped aperture above the slide member defining a variable length sighting aperture. Two range scales, one on either side of the oval aperture, are scribed on the upright member. One scale may be used as a range indicator to a known height target which fills the variable aperture while the other range scale is keyed to the trajectory of the projectile fired by the arm. If the variable length sighting aperture is used to fire the arm, the arrangement is such that a hit on the known size target is assured if a correct sight picture is formed using it in conjunction with a conventional front blade sight.