Abstract: A fish lure simulating a bait fish is equipped with mechanically activated dull prongs which expand in the mouth of the attacking fish effectively holding it for recovery by the fisherman. Upon retrival the fish is released unharmed by simply releasing the tension on the fish line.

Abstract: A solar heat absorber, generally used in series, induces relatively high temperatures in a liquid or gas medium from the sun's rays at any angle above the horizon. The absorber consists of a substantially spherical vessel made of a transparent material encasing one or more similar but somewhat smaller vessels, all of which are provided with an opening or neck, the outer one of which overlaps the inner one and is sealed thereto. The annular space or spaces between the vessels are evacuated of air thereby insulating the inner vessel against heat loss to the atmosphere. One surface of the inner vessel is coated with a solar heat absorbing material or the vessel material is integrally colored. The combined vessels are sealed at the neck to a tubular fitting having longitudinal passages for supplying a heat transfer medium to, and discharging it from, the inner vessel.

Abstract: A hand tool of the ratchet type is provided with a planetary gear system to enable the user to vary the output speed of the tool. In the preferred embodiment a ratched type socket wrench is provided with a planetary gear system and a hand grip in the form of a cap covering the system, with the sun gear coupled to the output, the tool handle coupled to the planet carrier and the hand grip coupled to the ring gear. If the hand grip is held against rotation by the operator while the handle is turned, the output will be driven at a speed greater than that of the handle, thus over-running the ratchet. If the resistance offered by the driven object, e.g. a nut, becomes large enough so that the hand grip may not conveniently be held, the operator may release the hand grip or slacken his hold thereof thus allowing the ratchet to engage and lock the handle to the output so that the handle will directly drive the output.