Abstract: An improved angling device operable under physically autonomous, remote control by an operator, comprising an unmanned flotation platform including remotely operable propulsion and directional controls for selectively positioning the flotation platform under the remote, physically autonomous control of the operator, at a desired location on a surface of a body of water associated with fish habitat; and downward-looking sonar supported in buoyant relation on the platform and operable to provide intelligible feedback to the operator, based on sonar-sensed signals relating to that fish habitat. The combination of the improved angling device can include a terminal tackle depth control supported in buoyant relation on the platform, for selective adjustable positioning of the terminal tackle at desired depths under the remote, physically autonomous control of the operator.

Abstract: A fishing tip-up construction for a rod on which is mounted a supporting stand having a pair of legs movable between retracted and extended positions. The rod terminates at one end in a downwardly bent grip which, together with the legs, forms a stable three-point support for the rod. A fishing line is wound on a reel that is supported on the rod between the grip and the stand. A signal device is movable from an inactive position to a signalling position in response to the application in one direction of a force on the fishing line. The force required to effect movement of the signalling device to the signalling position is adjustable.

Abstract: A double-ended ceramic cylinder has a thin metal end cap edge-brazed to each end by means of a brazing paste containing active metal applied to the end surfaces of the cylinder prior to placing the end caps on the ceramic cylinder. Use of the brazing paste ensures that the entire end surfaces of the ceramic cylinder are coated with brazing metal.

Abstract: The present invention relates to processes and apparatus for welding or joining metal parts which comprise moving a welding torch in a direction along a joint between said parts, causing a molten pool of metal with said welding torch along the joint and directing a laminar flow of inert fluid toward a freshly welded area behind said welding torch in the form of a trailing shield whereby the freshly welded area is protected from the surrounding air during its solidification. The laminar flow or inert fluid may also be directed along the joint ahead of the welding torch in the form of a leading shield such that turbulence in and around the joint caused by a high welding speed is reduced, thereby preventing oxygen entrainment in said molten pool of metal. The laminar flow of inert fluid is usually provided through at least one diffuser having at least one porous diffusing surface which is generally provided with a screen and/or a spatter shield.

Abstract: A press for welding magnetic yokes comprises first and second frames movable toward and away from each other, on which there are defined respective confronting and parallel pressure surfaces (12, 35), a motive means (50) acting between the frames (11, 30) to produce the aforesaid movements, and a presser (14, 36) associated with each of the pressure surfaces (12, 35) to define a saddle-piece for receiving the yoke (3). Between at least one of the pressers (14, 36) and its respective pressure surface (12, 35) there intervening an elastically deformable pillow (39) functioning as an adjuster of the deformation under load undergone by the corresponding pressure surface (12, 35). This pillow is composed of an elastic material which has a behavior under load, within a predetermined range of specific loads, that approaches a hydrostatic behavior, that is, such that for a given increase in the deformation there corresponds a proportionally low pressure increase.

Abstract: A fishing lure, the combination comprising a lure head and a lure tail spaced apart longitudinally, the tail being longitudinally elongated; the head having a front edge, and two laterally spaced, elongated edges tapering rearwardly and toward the tail, the head having opposed faces with spacing therebetween substantially less than the length dimension of each the elongated edges, the head having weight substantially greater than the weight of the lure tail; and there being means to connect a fishing line to the fishing lure so that the line approaches a mid-portion of one of the head faces.

Abstract: An apparatus is provided for use with a solderability testing machine to releasably engage a sample for immersion into a solder bath. The apparatus contains a pair of spring-loaded plates which serve to hold the sample so that only the desired portion of the sample may be dipped in the solder. The apparatus also carries a threaded, depth-controlling member which may be threadedly adjusted to precisely control the depth of immersion of the sample held by the holder into the sample bath.

Abstract: Known tool configurations for ultrasonic welding are comprised of a sonotrode as an active tool and an anvil as a work fixture for the workpieces. According to the invention, the sonotrode (1, 21, 30, 40, 50) and/or anvil (2, 22) are provided with synthetic hard material on their working surfaces (6, 9, 36, 46) through which the ultrasound is injected into the workpieces (3, 4, 23, 24) to be welded together. This synthetic hard material defines a new working surface (6a, 9a, 26a, 46a, 56a). Polycrystalline diamond, polycrystalline boron nitride, or also cubic-crystalline boron nitride come under consideration as synthetic hard materials.

Abstract: In a trap used to capture small fur animals by the body or the head, a trigger is necessary to keep the jaws open. In my invention, the trigger is made of one piece of metal. The above mentioned trap will be activated when an animal steps on the piece of metal (invention). This pressure will activate the jaws that are held in an open position due to the pressure of one or more springs.

Abstract: A welding apparatus and method characterized by an electrically activated high temperature igniter with a pair of lead wires adapted to be connected to a high energy source of current and a high resistance bridge between the leads. The bridge is coated with an ignition material comprising a mixture of fine aluminum, one or more metal oxides or oxygen containing compounds and a binder. The welding apparatus has a vessel filled with exothermic material. When the lead wires are supplied with a high energy electrical current, the lead wires cause the ignition material to ignite in turn causing the exothermic material to ignite. If the coated bridge wire is positioned above the exothermic material, the igniter will broadcast multiple points of ignition over the top of the exothermic material.

Abstract: An impoundment for farming shrimp located in the proximity of salt and fresh water sources defined by a retaining wall defining a substantially rectangular area with a channel adjacent to the inner side of said wall and a central portion having its bottom surface above the plane of the bottom surface of the channel. One reservoir for storing salt water is located in a location of said rectangular area in close proximity to the salt water source and it also discharges the salt water contained therein into the rectangular area. Another reservoir for storing fresh water is located in the rectangular area in close proximity to the fresh water source. Another pumping assembly is used for pumping the fresh water from the fresh water source into said second reservoir means. A barrier divides the rectangular area so that two sub-areas are defined and one of the subareas being farther away from the reservoirs includes an opening of relatively small diameter.

Abstract: This invention pertains to the remote harvesting of crayfish by trapping them within a trap submerged in water and then, when harvesting is desired, by applying a counterweight for pivoting the trap so that the trapped crayfish are passed to a line for flushing the crayfish to a collection tank. This operation is accomplished remotely from the harvester and more than one harvester can be connected to the collection tank.

Abstract: The fishing line casting assist device comprises a body releasably mountable on the handle of a fishing rod, a rotatable line retaining member rotatably journaled in said body and having a weight coupled thereto for creating a retaining force for maintaining a fishing line trained over said line retaining member until the fishing rod is cast whereupon the casting force causes the retaining member to move to a non-line retaining position where the fishing line is free to flow out of a reel mounted on the fishing rod.

Abstract: A mosquito-killing fan includes: a mosquito catcher rotated in a direction opposite to a rotating direction of an air fan rotatably driven by a driving motor mounted in a casing. A fluorescent lamp is secured in a bottom portion of the casing. An air stream is drafted inwardly for sucking mosquitoes flying in the air stream so as to be caught by the mosquito catcher. The mosquitoes will be killed after being impacted against the catcher by the air stream. A mosquito killing device is thus provided which prevents the hazard of an electrical shock.

Abstract: An insect trap has a base (10), defining a pitfall chamber, of a suitable shape (such as conical) which will allow the trap to be easily inserted into a bulk granular material. A removable lid (20), preferably of a shape (such as domed) which will allow the trap to be easily withdrawn from within the bulk granular material. Holes (30) in the lid are of a size such as will allow ingress of insects but not of grain. Slippery rings and flanges are provided for preventing insects from escaping from within the chamber.

Abstract: The insect trap apparatus of the invention includes two chambers into which gypsy moths and other insects are attracted. The chamber entrances are restricted by shutters and flanges to limit the insect from exiting therefrom. The insect is attracted into the device by a sex lure, an insecticide or combination thereof mounted in a disposable collection bag.

Abstract: A method of manufacturing a high pressure fluid supply pipe of a double pipe structure in which an outer pipe is tightly fit over the outer circumference of an inner pipe, wherein the method comprises a step of forming a double pipe by tightly fitting an inner pipe with an outer pipe having a thermal expansion coefficient greater than that of the inner pipe while putting a brazing material therebetween, and a step of subjecting the double pipe to a heat treatment and then to a gradual cooling treatment to join and tightly fit the inner pipe and the outer pipe integrally to each other, thereby providing at least the inner surface of the inner pipe with a compressive residual stress. The resistance to high inner pressure can be improved and destructive strength, in particular, fatigue resistance to the repeated inner pressure can remarkably be improved.

Abstract: A ferric article is brazed by a copper solder at a temperature of or higher than 1,100.degree. C. in a heat-treatment furnace, parts of the article which are desired to be carburized, are carburized simultaneously with the brazing by covering with organic materials such as an old newspaper and the like.

Abstract: A spoon-type fishing lure which includes a light reflective metallic plate of a trapezium configuration resembling an arrowhead, and having a V-shape in cross-sectional configuration. The metallic plate has a center line or longitudinal crease extending from a forward end to a rear end thereof. A wire element forms a hook having a barb near the forward end of the arrowhead-shaped plate, and having a shank portion lying along the longitudinal crease of the plate and secured to the plate at that location. A weed guard wire extends from the front or leading end of the spoon rearwardly at an acute angle to the shank portion of the hook, with the weed guard terminating adjacent the barb of the hook at a location spaced outwardly from the plate.

Abstract: A portable fishing cushion is provided and consists of a base assembly placed upon a flat surface such as on a boat or the like, a seat assembly having a front cutout area, in which the seat assembly is secured onto the base assembly and a rod holder assembly swively mounted within the front cutout area of the seat assembly over the base assembly. A person can sit upon the seat assembly and place a handle of a fishing rod into the rod holder assembly between their legs so that the person can fish therefrom.