Abstract: A cylindrical metal pin used to connect and permit the relative rotation of two mechanical parts, is held and prevented from relative longitudinal motion by means of a flanged, slotted, locking collar and bushing.

Abstract: An improved freeze-harvest cycle control system for use in tubular type refrigerated ice makers having a water level control pan wherein a drop in the control pan water level is detected and used to initiate the harvest cycle. Temperature controls on the water tube discharge are used in conjunction with the water level control means to insure completion of the harvest cycle before commencement of the freeze cycle.

Abstract: A method of producing magnesium and chlorine including the steps of injecting concentrated magnesium chloride containing brine into a hot gas spray drier wherein most of the water is evaporated to produce cell feed in the form of a powder of high porosity discrete particles of impure MgCl.sub.2, the impure particles being purified by in situ reaction within an electrolytic cell by depositing the particles onto an area of the surface of molten electrolyte whereby a portion of the entrained impurities are vaporized and withdrawn and circulating the electrolyte through the interelectrode space where the remaining impurities are chlorinated by chlorine gas produced at the anode, the circulation being at a rate to entrain most of the magnesium oxide particles in suspension for reaction with chlorine gas generated at the anode element. The molten magnesium produced at the cathode is withdrawn in the usual manner.

Abstract: A fastening device for connecting a tension member to an object, whereby a force can be applied to the object in any direction within a hemisphere centered about the point of attachment to the surface of the object. The swivel shackle comprises a shoulder bolt which is adapted to be attached to the object and has a cylindrical portion of larger diameter than the base portion which is attached to the object, as by threads. A unitary load ring comprises a body portion having a circular bored opening adapted to rotate on the cylindrical portion on the bolt. The load ring has two oppositely directed shafts extending from the body portion. A Y-shaped pivot assembly is provided which has an opening in each of the arms of the Y, which are adapted to fit over and rotate about the shaft extension on the load ring. The leg of the Y has an opening, to which a shackle can be attached, by passing the pin of the shackle through the opening in the leg of the Y.

Abstract: A pocket-size razor and shave cream dispenser comprising a razor carried by a housing member having an internal chamber for receiving a supply of shave cream therein, a plunger member secured to the housing oppositely disposed from the razor and extending reciprocally into the chamber, a longitudinal passageway extending through the plunger and having one end thereof in communication with the internal chamber and the opposite end thereof open whereby the shave cream is forced outwardly through the passageway upon movement of the plunger member in one direction, an end cap member removably secured to the outer end of the plunger member for selectively closing the passageway to seal the shave cream in the chamber, and an elongated tubular cover member removably secured in the housing in the proximity of the razor for encasing the razor during periods of non-use.

Abstract: A bow string apparatus specifically designed for use with an archer's compound bow. The apparatus is provided with attachment brackets for attaching a pull cord to the bow cables between the opposite eccentric pulley wheels and the bow string attachment points. The pull cord utilizes a low friction sheath member and a sliding-locking bar for pulling tension on the bow and locking the bow in a compressed position while changing the bow string thereof.

Abstract: A method of mining a large underground seam of mineral such as coal is described in which a first cylindrical shaft is drilled from the surface of the earth down to the mineral seam. A portion is enlarged at the base of the first shaft as a work room. A first radial shaft out to a selected radius R is drilled by conventional methods with the roofs supported by means such as hydraulic chocks which can be extended and moved selectively as the line of drilling progresses. When the first shaft is drilled a continuous miner working on a short face method of mining is directed radially from the work room and is advanced outwardly until the width of the first radial shaft is such that the original wall of the first shaft has been cut away. The direction of the miner is then turned to be parallel to the first horizontal shaft and a short wall cutting advance is made to cut away the first wall of the first shaft and in effect drill a second shaft having a first wall spaced by the width of the cutter.

Abstract: A boat lift for lifting and storing boats out of the water, the lift being arranged for mounting in a boat well having opposed parallel vertical sidewalls spaced above the surface of a body of water, the lift including two pairs of trunnion members affixed to the boat well sidewalls, one pair being in a forward horizontal axial alignment and the other pair in a rearward horizontal axial alignment, the axii being parallel to each other, a frame adapted to be lowered into the water to receive a boat floating in the water thereon and to be raised with the boat on the frame to lift it clear of the water for storage, the frame having a forward pair of guide members and a rearward pair of guide members, each pair of guide members being parallel to each other and each guide member having an elongated slot therein which slidably receives one of the trunnion members, the slot in each of the four guide members being of the same angular relationship to the vertical of between 15.degree. and 75.degree.

Abstract: Method and apparatus for construction angle fittings and large sweeps of polyethylene pipe by the fusion process, which comprises the preparation of short pipe segments of which both faces are cut at a selected angle (90-A) to the axis of the pipe. Both faces are cut at the same angle, so that the included angle at the two faces is equal to 2A. A conventional fusion pipe joining apparatus, which normally holds two pipes colinear, for fusion at a plane of juncture which is perpendicular to the axis of the pipe, is modified to have inserts into the pipe clamping means, so that the axes of the pipe segments are at the selected angle A. When two segments are clamped respectively in the fixed clamp and the movable clamp are brought together, the contiguous faces will be plane, parallel and will have the same elliptical contour, and can be joined by the fusion process. Additional segments can be added to the ends until a sweep of any desired total angle of turn is constructed.

Abstract: A convalescent recovery stall for large animals comprises a rectangular frame of length and width greater than the corresponding dimensions of the animal, with means for inserting wall sections into said frame, so as to provide a rectangular box surrounding said animal, to a selected height. There is at least one rectangular, closed, flexible-walled water tank which will fit snuggly within the walls of the box. There is at least one reentrant tube of flexible material sealed into the top surface of the tank. Altogether there will be four such tubes one for each of the four legs. The contour of the tube is such as to fit a leg of the animal. The vertical height of the tank is greater than the length of the legs of the animal so that when the tank is filled with water under pressure, the water pressing on the surfaces of the legs, chest and abdomen of the animal, will support its weight.

Abstract: An apparatus for the double filtering of tobacco smoke by water or other suitable liquid. The apparatus is provided with two vertically arranged chambers, the lower chamber, for carrying the filtering liquid, being in communication with the upper chamber by means of riser tubes. The apparatus includes a tobacco carrying bowl exterior of the apparatus and in communication with the bottom of the lower chamber and including a mouthpiece exterior of the apparatus and in communication with the upper chamber.

Abstract: A valve having integrity assurance means including a valve body with a flow passageway through it, the flow passageway having a circumferential valve seat and the valve body having a small diameter test opening communicating the seat with the exterior of the valve, and having a valve disc with a circumferential sealing surface supported in the body, the disc being rotatable to an open position permitting fluid flow through the valve to either side of the disc and to another position to close the valve by the contact of the disc sealing surface with the valve seat, the disc sealing surface and the valve seat having cooperative configuration to provide two spaced apart circumferential contact areas between the seat and the disc, the test opening communicating between these contact areas so that when the valve is in the fully closed position the test opening can be utilized as a means to test the integrity of the valve, that is, to insure that no leakage is occurring past the valve disc.

Abstract: A system for introducing fuel into a fuel burning chamber or area wherein an extremely lean mixture of air and fuel is directed through a catalyst into a blending chamber and is discharged from the blending chamber through a second catalyst into an ignition or burning chamber. The system may be used efficiently with low grade or heavier fuel. When using the low grade or heavier fuels, it is desirable to heat or vaporize the fuel prior to the introduction thereof into an atomizer or the catalyst and substantially complete combustion occurs in the ignition or burning chamber for substantially eliminating the emission of unburned hydrocarbons, thus not only conserving fuel but also reducing air pollution.

Abstract: A process for the recovery of light mixed hydrocarbon vapors from an air-hydrocarbon mixture expelled as a result of storage breathing or loading of a vented hydrocarbon vessel. The hydrocarbon vapor components are adsorbed from the mixture, thus permitting venting of the substantially hydrocarbon free air safely to the atmosphere without pollution. The adsorbed hydrocarbons are removed by subjecting the adsorbent bed to a lower pressure, and the hydrocarbon components in the resulting desorption stream are substantially adsorbed for recovery, and the remaining gases from the absorption vessel are passed through a second adsorption bed to substantially remove any hydrocarbons therein.

Abstract: A trigger device for facilitating pulling of a bow string and for quick release of the taut bow string for propelling an arrow from the bow, said trigger device comprising a main body portion provided with suitable finger receiving recesses and a secondary body portion substantially perpendicular to the main body portion having a bow string hold and releasing latch mechanism carried thereby. The latching mechanism comprises a flexible loop member adapted for encircling the bow string and engaging a loop receiving recess provided in the secondary body portion. A latch member extends across the open end of the loop receiving recess and is operably connected with a release trigger by a suitable bell crank whereby a light touch of the trigger member by the finger of the archer quickly and easily releases the loop from the loop recess for release of the taut bow string. The bell crank is L-shaped and is positioned in a generally L-shaped passageway in the trigger device.

Abstract: An attachment apparatus designed to facilitate the quick connection and release of movable objects relative to a fixed surface. The apparatus provides a fixed base shoe member which is firmly secured to a stationary surface. The shoe member is constructed from a spherical segment having a channeled groove extending therethrough, inwardly extending flanges are provided in conjunction with the channel groove for holding a movable foot member within the groove. The foot member is secured to a coupling apparatus which carries a retainer means for locking the foot member in place directly beneath the inwardly extending flanges of the shoe member.

Abstract: A purifier for handling the high temperature effluent from a blister copper furnace, which includes solid particles in the range from 600 microns, or greater, down to a few microns, which contains oxidizable material, and which is at a high temperature, in the range of 2100.degree. to 2400.degree. F. The effluent from the blister furnace goes first to a settling chamber where the very large particles are caused to settle out by reducing the velocity of the effluent gas. The effluent then goes to a precooler tower which is an adiabatic humidifier, where the temperature is reduced to the neighborhood of 1200.degree. F. by injecting an air-driven water atomizer spray. The effluent then goes to an oxidation tower where the combustibles are oxidized, at lower than flame temperature, by injecting air and recycled gas. The effluent then goes to a conditioning tower which is a second adiabatic humidifier to further cool the gases to the neighborhood of 450.degree. F.

Abstract: Silk screen printing apparatus comprising the usual silk screen frame hingedly secured to suitable support base, and having an inking-squeegee reciprocally movable with respect to the silk screen frame for alternately applying ink to the silk screen and squeegeeing the ink onto the media being printed during the printing operation; a flood bar maintained in a position of close proximity to the surface of the silk screen in one direction of movement of the inking-squeegee for applying ink to the silk screen; a squeegee maintained in a position of close proximity to the surface of the silk screen during movement of the inking-squeegee in an opposite direction for pressing the ink through the silk screen during a printing operation; pin devices carried by the inking-squeegee for automatically pivoting the silk screen frame about the hinged connection in one direction of movement of the inking-squeegee for elevating the silk screen to facilitate removal of the printed media and isertion of the next succeeding med

Abstract: An eye for a fishing pole has a main body portion of a configuration complementary to the outer periphery of the pole for facilitating securing of the eye thereto, and line receiving means having an elongated arcuate opening for passing the line therethrough in a manner for securing the line to the pole with a minimum of interference between the line and the pole.

Abstract: A fish hook specifically designed and constructed for use with artificial worms and provided with means for causing the hook to rotate within a fish's mouth to a substantially vertical position to prevent hooking the fish in the soft side portions of the fish's mouth. The hook is also specifically designed for attachment to the artificial worm in a manner whereby the worm moves through the water without twisting the line and whereby the barbed portion of the hook is fully exposed when struck by a fish.