Abstract: A tube-type heat exchanger has two tubesheets, each provided with a multitude of bores, and tubes which extend between the tubesheets at their bores, their hollow interiors opening into the bores. Each tube at its ends is joined to the tubesheets along fillet welds which, being free from crevices, eliminate the build up of deposits and corrosion which commonly develop in the crevices of heat exchangers. To assemble the heat exchanger, each tube is passed through a bore in one of the tubesheets and advanced toward the other tubesheet, its leading end being inserted into a socket at the end of a bore in the other tubesheet. Then the leading end of the tube is welded to the tubesheet at which it is located. This leaves the trailing end of the tube in the bore of the tubesheet through which the tube was initially inserted, and that bore likewise terminates at a socket. The trailing end of the tube is machined down from within the bore until it extends no farther than the socket at the end of the bore.

Abstract: The invention is a structure that is particularly configured to support simultaneously a multitude of fishing lines, and a live bait trap. Attached to each line are several fishing hooks, and all or a portion of the several fishing hooks are specifically designed to secure live fishing bait without doing injurious harm to the live bait, and also all or a portion of the fishing lines may be attached to a tow line equipped with a turning block with multiple hooks, and said turning block features bright, illuminating devices that reflect underwater light in alternating patterns as the turning block rotates freely in a body of water with sufficient current velocity to cause the rotation of the turning block. That particular structure is secured to a landing pier or a boat in a pivotal manner such that the supported multiple lines, fishing hooks and, turning blocks can be conveniently raised from the body of water or lowered into the same body of water.

Abstract: A two-piece body type fishing lure has upper and lower parts that are held together by a dovetail-type sliding joint. The dovetail can be wider at the rear and narrower towards the front so that the upper part can be removed only be sliding it forward. The color and pattern of the lure can be changed by interchanging various top portions with a common lower portion, which need not be removed from the line in order to change the upper portion.

Abstract: A fishing device is provided which is functional both to hook the fish and to signal the fisherman that the bait has been taken. A trigger mechanism is utilized to release a leaf spring which is connected to a fishing rod. Actuation of the trigger mechanism forces the fishing rod upwardly with sufficient force to hook the fish.

Abstract: A fishing lure has a buoyant body with a weight connected with the bottom thereof to properly orient the lure in an upright position when it is cast into a body of water. The lure is characterized by a rigid, bendable support arm. One end of the arm extends upwardly and rearwardly of the lure to suspend a baited hook or fly above the water surface. The other end of the arm is reversely folded below the body to define a loop with which a lower hook can be connected. Thus the lure is capable of catching fish which feed under water and fish that jump for food.

Abstract: Pieces of metal are joined with silver material in a two-stage heating process. In one application, a brazed porous coating of metal particles on a metal substrate of a device is formed by interposing a silver material between the substrate and the particles, and placing the particles onto the substrate. The device is heated to a first temperature slightly below the melting point of the silver material, then briefly heated to a second temperature above 1100.degree. C. to rapidly melt the silver material to wet the particles and substrate and to generate alloying among the silver material, the particles, and the substrate. The device is allowed to cool to solidify the alloy and unite the particles and substrate to form a porous coating on the device. Also disclosed are a prosthetic device having a metal shaft for insertion into a bone canal, and a porous coating of metal particles brazed to the metal shaft by a silver material.

Abstract: A mousetrap including a supporting base with an upstanding support, a container of water on the base, a pivotal platform overlying the container of water to enable a plurality of mice to be trapped, an entrance area including a bait box and entrance door and platform having a flange at one edge of the entrance end thereof, to hold the door in open position, an escape tube on the support which extends vertically from the entrance area to a point above the pivotal platform. In use, a mouse will be trapped in the bait box area after entry by the door being closed and then be trapped in the escape tube during vertical climbing along the tube to prevent downward return movement of the mouse with the only exit for the mouse being onto the platform whereby the weight of the mouse will pivot the platform and dump the mouse into the water in the container with the platform opening the door and returning to a position for receiving another mouse from the escape tube.

Abstract: The new fishing rod holder and the method of using it, relate to the use of the holder having a stake for insertion into the ground, and a fishing pole holding member, which is swingably connected to the stake and which can be swung to a storage position adjacent to the stake. The fishing rod holding member has a rod receiving portion including a strength imparting neck and a curved lip which cooperate in supporting a fishing rod handle of various different sizes and shapes in a secure manner without any need of adjustment of the rod holding member.

Abstract: A container for holding and protecting a fishing lure attached to the line of a fishing rod comprises a unitary envelope of rubber-like material. The envelope has an elongated rectangular body with pyramidal end regions. A normally closed slit in one face of the envelope extends from the apex of one end region to the apex of the other end region. When the ends of the container are squeezed toward each other, the slit opens providing a generally rectangular opening for the length of the container. An opening in the apex of one end region allows the line to pass out of the container. A hook on the container enables it to be attached to one of the line guide rings on the rod.

Abstract: A container for fishing lures comprising a box, a panel slidably received within the box, and a lure receiving member slidably received by a plurality of horizontal slots on the panel. The box has a front wall, a back wall, and side walls extending between the front wall and the back wall. The box has a first vertical slot extending along one of the side walls. The box also has a second vertical slot extending along another of the side walls. The panel is slidably received by these vertical slots. The panel has a plurality of horizontal slots extending across a surface of the panel. The lure receiving member has a flat surface that has a size suitable for receipt into the horizontal slots of the panel. A circular clip is connected to the flat surface and extends outwardly therefrom for engaging a portion of the lure. The box further comprises a plurality of vertical members in spaced relation attached to the inner surfaces of the side walls of the box.

Abstract: A method for reparing or manufacturing an article, such as a bladed disk, having an integral projection, for example an airfoil, includes first removing a damaged projection to provide a stub, or in new manufacture providing the stub. A collar shaped to register with the stub is provided and bonded to the stub to generate a stub-collar combination. Then a replacement or new projection member is bonded to the stub-collar combination. Finishing then provides the article. Apparatus includes the combination of a metal attachment die and a heating means retained in a recess of the die during bonding.

Abstract: The hunting of game, such as squirrels, is facilitated by the simultaneous steps of simulating a distress cry of a young squirrel and the sounds which would be created by a predator in attacking a young squirrel. The simulated distress cry and sounds of the attacking predator cause inactive mature squirrels to become active and to give an indication of their location, such that they can be hunted effectively during all daylight hours. The distress cry is simulated using a novel game calling device in the form of a whistle and the predator sounds may be simulated by beating the ground with portions of flexible branches of an adjacent bush.

Abstract: A fiber reinforced metal laminate and method of preparation. The metal layers are of aluminum or aluminum alloy. An aluminum containing solder layer is disposed on inner surfaces of the metal layers. The fibers are silicone-carbide, boron or silicon-carbide coated boron and located between the solder layers. These layers are heated under pressure to a temperature above the melting point of the solder and below the melting point of the metal layer.

Abstract: A method and an apparatus which non-metallurgically attaches two dissimilar metals and, in particular, but not by way of limitation, a method and an apparatus for non-metallurgically attaching corrosion resistant metals to non-corrosion resistant metals.

Abstract: A weedless fish hook assembly (10), and a method of making the weedless fish hook assembly, involve an elongated shield (14) constructed of a flexible, semi-rigid and resilient tube (30) with a shank (20) of a fish hook passing through and being attached to an upper tubularly portion (34) of the shield near an upper end of the shank. A lower portion of the elongated shield comprises an elongated segment inside-out segment (38) of the tube which bows from the upper tubularly portion toward the hook of the hook member. A metallic hook member of said fish hook assembly passes through an opening in the lower portion of said shield at a penetration area such that the inside-out segment bows outwardly and downwardly toward the hook. The inside-out segment forms a groove in which the hook's spear end is positioned to thereby protect the hook spear end from snagging debris but which yields to the mouths of biting fish.

Abstract: A wire bonding method for connecting a first bonding point and a second bonding point via a wire including the steps of first connecting the wire to the first bonding point, raising a capillary slightly and moving it slightly away from the second bonding point, raising the capillary further by an amount sufficient for forming the wire loop with the wire being played out, moving the capillary over the second bonding point along a circular track which has a radius sufficient for forming the wire loop, and connecting the wire to the second bonding point.

Abstract: The present invention provides a very carefully designed trolling rig and a method of combining the trolling rig with bait that is especially intended for use with a certain bait fish that is commonly known as a ballyhoo. The ballyhoos that are usually sold for bait are quite uniform in size and, therefore, can be used with the present invention. Thr present invention provides a conical cap that is made, preferably by molding, to resemble the head of a ballyhoo and which has a hollow cavity of a size and shape that will be compatible with the size and shape of the head of a bait ballyhoo. This conical cap, which is preferably molded or cast from a dense material, is closed at the front with a leader being attached unobtrusively to the leading edge of the cap. Another leader is unobtrusively attached to the rear lower edge of the conical cap, and a hook is connected to the other end of this rear leader. An angled and vertically positioned locking pin is used for holding the fish in the conical cap.

Abstract: There is disclosed a fishing rod holder the primary members of which can be rotated through circular planes that are perpendicular to each other enabling the fishing rod holder to accommodate any variety of fishing circumstances.

Abstract: A fishing lure retriever is disclosed which is of the of the class including a generally cylindrical weighted main body and eye guides adapted to slidably couple the retriever to a fishing line, thus permitting it to slide down the fishing line to the site of a lodged lure. Lure engagement structure is provided integral with the retriever and is generally bulbous, being composed of a series of equatorially distributed filament loops. A cord fixed to the upper end of the retriever permits tugging on it after engagement has been made with a lodged lure to dislodge and retrieve the lure.

Abstract: A method of lining an exhaust manifold is disclosed, including applying a thin layer of a heat-resistant compound to the interior of an exhaust manifold; and bonding the compound to the manifold. The manifold may be in two or more sections when the compound is applied and the sections may subsequently be joined together to form the manifold. The compound may contain zirconium and/or may be a ceramic material.