Abstract: A bait container, particularly useful with crustacean (lobster or crab) traps is formed with an apertured side wall in which the apertures comprise at least 35% of the surface area of the side wall. The apertures for any container are usually uniform in size and the range of aperture size is from about 250 to about 1000 microns. The size and distribution of the apertures prolongs bait life due to the controlled release of bait from the container and the added protection against unwanted predators such as arthropods. Furthermore the bait container permits the use of emulsified or minced bait produced from previously undesirable material, such as discards and non-edible fish parts taken from the fish processing industry.

Abstract: A wax profile for making a tooth for a dental bridge, the tooth having a cast gold alloy skeleton and porcelain coating, the skeleton being cast in a negative mold made from the wax profile and having the same shape as the wax profile. The wax profile having a wax, tooth-shaped body. The body having aligned upper and lower cavities connected vertically with a median channel to provide said porcelain coating filling the spaces of the cavities and channel with increased strength responsive to compressive forces applied vertically of the tooth.

Abstract: A load indication system monitors not only the total frictional load on the mold oscillator in a continuous casting apparatus, but also monitors the difference in the oscillator load at various locations around the mold to detect mold wobble and load imbalance. In addition, both the total frictional load and the mold wobble are monitored by detecting their peak-to-peak values.

Abstract: Pressurized molten solder 71 is flowed along a confined first channel 86 and forced through a series of spaced, aligned apertures 88 as solder jets which rise, fall and merge to form a solder stream which flows along a second channel defined by channel walls 93 and 94. Spring held printed circuit boards 10 are advanced by a conveyor 21 which is tilted to move a far section of each board into engagement with the top of channel wall 93 and then a near section of each board into engagement with the top of channel wall 94 whereafter the board is spring held to ride along the tops of channel walls while a thin stripe of solder is applied to the board.

Abstract: A method and apparatus for forming a cast metal ribbon with a slit along the ribbon length includes the step of or a means for generating a controlled disturbance of the cast ribbon along a defined and localized width. The disturbance may be generated by a highly defined, needle-sized stream of gaseous media into the ribbon prior to complete solidification, or alternatively, a needle-like ceramic stylus. The dynamic pressure of the gaseous media or depth of stylus may be adjusted to completely penetrate the ribbon, severing the ribbon into multiple ribbons in a single casting; or alternatively, to only partially penetrate the ribbon, forming a score line of weakening and producing multiple ribbons readily detachable from each other along adjoining edges.

Abstract: A method and apparatus is disclosed to increase the line speed in a permanent mold casting system by eliminating the acceleration and stopping of a shuttle car system to remove mold wagons from the system by means of a continuous chain drive for the system and the use of a single shuttle car in combination with a chain release means eject a mold wagon from the return line to a wagon storage line of the system.

Abstract: Deep sea trolling apparatus and method employing a multi-jig array capable of being towed by a relatively small vessel. The array comprises a pair of running lines, spacing bars detachably connected to the running lines at spaced locations and adapted to maintain separation of the lines and stability of the array in the water, and jig-carrying branch lines detachably connected to the running lines in the spaces between the spacing bars. Both the spacing bars and branch lines are removable from the running lines as the latter are hauled aboard for removal of the catch. The method further contemplates setting a second array utilizing spacing bars and branch lines removed from a first array as the latter is hauled aboard. Paravanes can be used to shear the arrays beneath the surface of the sea and outwardly of the wake of the vessel.

Abstract: A mold for continuous casting of a magnetic metal includes a thin copper mold wall, a backup piece formed of a non-magnetic material serving to support the thin copper mold wall, passageways for a cooling medium between the thin copper mold wall and the backup piece, a clamping piece for clamping the backup piece against the thin copper mold wall, and an electromagnetic stirrer coil located between the backup piece and the clamping piece.

Abstract: An apparatus and process electromagnetically forms feed ribbon or rod material into a desired thin strip shape. Inductors contain and form the material in molten form into the desired shape. There are at least an upstream and downstream inductor for applying the magnetic field to the molten material. Both the upstream and downstream inductors may be jointly used to contain and form the molten material into the thin strip shape. An alternating current is applied to the inductors to generate the magnetic field. This magnetic field defines a containment zone for the molten material and a gap between the molten material and the inductors. The current is applied to the inductors so that the gap remains substantially constant. The feed material has an upstream and a downstream liquid-solid interface adjacent the upstream and downstream inductors, respectively, which define the molten material head and solid material portions of the material.

Abstract: A vertical pressure die casting apparatus comprising a stationary member, an air-permeable die detachably mounted on the stationary member and formed with a cavity including a downwardly open runner portion and a casting cavity portion communicating with the runner portion, a die clamping member to clamp the die vertically between the stationary member and the die clamping member, a sleeve held in position with respect to the stationary member and having a bore upwardly communicating with the runner portion of the cavity in the die, and a power cylinder provided below the die and having a cylinder body fixedly held in position with respect to the stationary member and a piston rod extending upwardly into the sleeve and vertically slidable in the sleeve.

Abstract: A fishing line guide includes a line guide ring, a frame for supporting the ring and arched legs designed to extend from the frame edge and be fixed over the surface of a fishing rod. A novel line guide according to this invention is characterized in that the frame is formed into a substantial truncated cone which tapers to the guide ring.

Abstract: A conveyor 21 rapidly advances a series of workholders to move printed circuit board connectors 10 mounted therein along a short insulating rail section 37 and a second long cooled rail 31. Presoldered leads 13 overlaying contacts pads 14 are heated to temperatures slightly above the melting point of solder during movement along the first rail 28 and are cooled to solidify the solder during movement along the second rail. A belt 44, moving at the same speed as the conveyor, presses the boards to ensure good contact of the leads with the pads during the melting and cooling of the solder.

Abstract: A single shop continuous casting facility is disclosed that comprises furnaces 10 and 10a for producing hot metal, continuous casters 12 and 12a for forming continuous lengths of solidified metal, and a rotating bridge crane 14 for transporting ladles 52 of hot metal from the pouring stands of said furnaces to the casting stands of said casters, the pouring stands of said furnaces and the casting stands of said casters being disposed within the arcuate area serviced by crane 14.

Abstract: A continuous casting apparatus wherein molten metal flows through a die progressively and is solidified in the die and withdrawn from the die including a die and cooling assembly comprising a tubular die having an external tapered surface which is uniformly tapered radially inwardly in the direction of movement of metal to the die, a cooling sleeve having an internal surface complementary to the external surface on the die and in substantial intimate surface contact with the external surface of the die and an annular cooling shell surrounding the cooling sleeve and having portions thereof spaced from the sleeve to define a cooling chamber. The die and cooling assembly includes at least one inlet to the chamber and at least one outlet from the chamber, the inlet and the outlet being spaced axially with the outlet being nearest the inlet end of the die into which the molten metal flows.

Abstract: A computerized die-casting machine control includes a microcomputer and a programmable controller having presettable inputs to establish a desired machine operating sequence. Temperature sensors at the holding furnace, cover die, ejector die, gate and at the die impact bushing monitor the die casting variables and produce input signals to the shot-control micro-computer. The micro-computer is programmed to take pre-programmed actions to correct out of tolerance conditions in the machine on a continuous on-line basis during machine operation.

Abstract: The invention concerns the continuous casting of metals such as alloys of copper and is directed to the type of apparatus that uses a graphite die having a mold passage in which the casting is shaped as it passes through the die. In that type of apparatus, the die is disposed between cooling elements that conduct heat away from the die to cause the hot metal to cool as it passes through the die and because the die has a tendency to bend away from the cooling elements, the apparatus employs clamps to inhibit separation of the die from the cooling elements. In the invention, means are provided to apply compressive force to the ends of the die to cause bending moments to be set up in the die that counteract the tendency of the die to bend away from the cooling elements. In the invention the die is made of two graphite plates of uniform thickness separated by graphite spacers which form a generally rectangular mold passaage.