Abstract: A nail clipper for clipping the nails of an animal such as a dog, cat or the like which allows for the clipping of an individual nail at the desired length to prevent injury or improper length cutting for the animal. The device includes a hand-actuated clipping blade used in conjunction with an adjustable in size nail holder which allows the nail to be clipped to be firmly held at a particular position relative to the nail cutting blade. The nail holder and positioner includes a disc having a plurality of apertures of different diameters which is moveable to position a desired aperture of a particular size adjacent the cutting blade. With the varying diameter apertures, the animal nail may be inserted in each aperture until an aperture is found that permits the nail to penetrate a particular distance based on the diameter size of the nail, which is tapered. The proper aperture is determined which allows only penetration to the point equal to the desired length of the nail portion to be cut.

Abstract: Device for diminishing tip vortices in an aircraft. For the purpose of diminishing the tip vortices generated by aircraft there are provided retractable foils at or near the airfoil, as wing, tips in question and projecting upwardly and/or downwardly therefrom. The operation of the retractable foils is satisfactory if such foils are parallel to the centerline of the aircraft but it is preferable if such foils are angled slightly with respect thereto, such as if the leading edge of the upper foil is angled approximately 10.degree. inwardly toward the fuselage of the aircraft and the bottom foil is oppositely angled also approximately 10.degree.. The retractable foils, in addition to diminishing wing tip vortices, also when used on wing tips improve the rate of climb of an aircraft at a given engine setting and appear to diminish the area over which the major amounts of noise generated by the aircraft will be dispersed.