Abstract: A concentrator comprising an elongate vertical upwardly opening drum with an upwardly and radially outwardly inclined side wall and a substantially horizontal bottom wall, means rotatably supporting the drum on a vertical axis, drive means rotating the drum about said axis, a plurality of vertically spaced annular radially inwardly and downwardly inclined baffles at the inside surface of the side wall and cooperating therewith to define a plurality of vertically spaced annular substantially downwardly opening heavy material collecting recesses, a normally closed drain opening at the lower end of the drum, material supply means to deliver particulate material into the drum adjacent the bottom wall and including a vertical material conductor with open upper and lower ends; and irrigating means including a water supply communicating with the upper end of said conductor and delivering water into and through the conductor and vertically spaced nozzles connected with the water supply and arranged within the drum an

Abstract: An elongate, electric resistance heater having a tubular case, a plug in and spaced from one end of the case and elongate, flexible jacketed power lines extending through the plug and axially outward from said end of the case, an elongate, tubular, flexible braided metal sheath about the lines and coupling means coupling said end of the case and the end portion of the sheath adjacent thereto, said coupling means including elongate concentric inner and outer tube parts arranged with said end portion of the sheath held tight therebetween, a radially outwardly projecting flange on one of said parts arranged within said end portion of the case adjacent said plugs and retaining means at said end of the case axially outward of the flange and holding the flange and its related parts and sheath against axial outward displacement in the case and relative to the lines.

Abstract: A timer comprising a non-directional synchronous clock motor, an operating arm projecting radially from the motor shaft, a motor control switch controlling power supplied to the motor and engaged and opened by the arm when said arm is in a normal position, stop means spaced radially from the shaft and circumferentially from the control switch to limit turning of the arm in a direction away from the control switch and to cause the motor to rotate in the opposite direction and the arm to turn back to said normal position, a service switch in a power line to related timed means and positioned relative to the control switch, stop means and arm to be engaged and operated by the arm when said arm is in a predetermined position within its travel between said control switch and stop means and starter means connected with said power supply to energize the motor and initiate turning of the arm away from said normal position.

Abstract: An oil filtering and purifying apparatus comprising a closed pressure tank with fluid inlet and outlet openings and a plurality of vertically stacked filter units removably arranged within the tank; the filter units have central hubs with vertical flow passages; the flow passages of adjacent hubs communicate with each other and with the outlet opening; each unit includes a lower horizontal plate carried by its hub, a felting screen supported in spaced relationship above the plate and cooperating therewith to define a fluid conducting chamber below the screen and about the hub; and fluid ports in the hub communicating with the flow passage therein and with the chamber related thereto; the apparatus next includes a deposit of particulate filtering material atop the felting screen of each unit; a section line from said inlet opening to a supply of oil to be filtered; and a motor driven fluid pump with its inlet communicating with said outlet opening and its outlet communicating with an oil delivery line.

Abstract: An adapter to releasably engage a small brew cone for a small coffee brewing machine with the cone engaging rails of a large coffee brewing machine; said coffee brewing machine has a hot water dispensing head with a bottom surface, a water discharge opening at that surface and a pair of elongate parallel brew rails spaced below said surface at opposite sides of the discharge opening to engage and support the rim flange of a large brew cone; said small brew cone is an upwardly opening cup-like unit with an outwardly projecting rim flange less in diameter than the space between the brew rails; said adapter is a flat plate-like unit with flat upper and lower surfaces, opposite side edge portions engaged above the brew rails, a center opening registering with the discharge opening and a pair of elongate parallel brew rails spaced below said lower surface and at opposite sides of the center opening and slidably engaged below and supporting the rim flange of the small brew cone; the side edge portions of the plate

Abstract: A mounting fixture to mount a box-like electric heater control unit on the lower rigid wooden frame structure of a box-spring to support the control unit adjacent one side of the box-spring above the plane of the frame structure for convenient visual monitoring and manual operation; the box spring includes resilient and flexible spring and pad structure overlying the frame to support a heater and a mattress and which affords no suitable structure for mounting a heater control unit; the fixture is a unitary sheet metal part with a lower frame engaging portion, an upper control unit mounting portion and an intermediate portion orienting the upper portion above and laterally outward of the lower portion; the control unit is a box-like unit having a rear wall with fastener receiving openings, a manually engageable control part and elongate power cords extending to an electric heater above the box spring and to a remote power source; the upper portion of the bracket has a flat surface opposing the rear wall of the

Abstract: An elongate, vice-like hand tool including an elongate case with front, central and rear hand-grip portions, a work-engaging head at the front end of the case and including fixed and movable parts, an elongate tension member having a front end coupled with a movable part of the head and extending rearward through the central portion to the rear portion of the case, a toggle mechanism in the rear portion of the case including a longitudinally shiftable bar with a front end coupled with the rear end of the member, a manually engageable first lever arm with a front end pivoted to the case and shiftable from an actuated position adjacent the case to an actuated position where its rear end is moved laterally from the case, a second lever arm with a front end pivoted to the first arm rearward of its pivotal axis and means releasably establishing driving engagement with the bar and coupled with the rear end of the second arm, said means releases driving engagement with the bar when the first arm is in its fully unac

Abstract: A fuel-air cell comprising an anode of readily corrodable metal such as aluminum or magnesium, a porous substantially non-corrosive cathode spaced from the anode and a caustic fluid electrolyte between and contacting the anode and cathode, said electrolyte is a mixture of a base having equivalent ionic conductance value of 180 or higher when tested in concentrations of 0.5 M and an acid having equivalent ionic conductance values of 100 or higher when tested in concentrations of 0.5 M and proton transfer reactance (PK1) values less than 1.0; whereby no corrosion of the anode occurs when, by varying the proportioning of the base and acid, the PH of the electrolyte is at or below 7, no appreciable corrosion of the anode occurs when the PH of the electrolyte is between 7 and 14; and minor corrosion of the anode occurs when the PH of the electrolyte is above 14.

Abstract: An elongate fabricated box-like cabinet for electrical apparatus comprising like horizontal top and bottom walls, like vertical end walls, and vertical front and rear control and service panels; the top and bottom walls have vertically spaced opposing inner surfaces with laterally spaced longitudinal flanged projections thereon defining vertically opening longitudinal grooves and horizontally opening longitudinal channels disposed toward the channels of adjacent projections; the vertical panels have upper and lower edge portions releasably engaged in the foremost and rearmost grooves in the top and bottom walls; the end walls have axially inwardly disposed surfaces engaged with opposing ends on the top and bottom walls and overlying the ends of the panels; the end walls have axially inwardly projecting retaining flanges engaging the inner surfaces of the top and bottom walls and the inner surfaces of said panels; the end walls carry screw fasteners engaged in the ends of related grooves defined by the project

Abstract: A fluid coupling including an elongate female section with front and rear ends, a central flow passage, means to connect the front end with a fluid conductor and a central cylindrical socket entering its rear end and defining a flat bottom; an annular sealing ring positioned in the socket adjacent said bottom; an elongate male section with front and rear ends, a central flow passge and means at its rear end to connect with a fluid conductor; the male section is slidably engaged with the socket in the female section with its front end engaging said seal; a mechanical means is provided to hold the male section forwardly in and relative to the female section with said ring clamped tight between said bottom and front end of the male section; the coupling includes means to retain the ring in the socket and including a plurality of circumferentially spaced longitudinally extending, radially inwardly projecting ring engaging ribs in the socket and about which adjacent portions of the ring flow to establish conformed

Abstract: The combination of a water filled flotation bed mattress with a filler neck and an elongate flexible cord-like heater structure comprising an elongate power supply cord section with inside and outside end portions and a filler neck engaging and sealing means between its end portions and engaged in and sealing said neck with said inside end portion extending into the mattress and the outside portion extends from the mattress, an elongate flexible resistance heater section with inner and outer ends arranged within the mattresses and including a water proof jacket structure and an elongate resistance element within extending from the inner to the outer end and thence to the inner end of jacket structures; and temperature control means including an elongate rigid metal tube with inner and outer ends engaged with and between the free end of said inside portion of the cord section and the inner end of the heater section, insulated conductors extending through the tube and connecting ends of the element with related

Abstract: A mill comprising a case with a longitudinal flow passage; an annular milling ring with a plurality of circumferentially spaced radially inwardly projecting teeth fixed in the flow passage; a substantially disc-shaped rotor arranged centrally within the ring in free running clearance with the teeth, a prime mover to rotate the rotor; said rotor has a plurality of circumferentially spaced, straight, radially outwardly opening guideways; a plurality of milling blocks with elongate shanks slidably engaged in the guideways and milling heads normally projecting radially from the rotor into close running clearance with the teeth and movable radially inwardly relative to the teeth; and stop means to limit radial outward shifting and allow for free radial inward shifting of the blocks relative to the rotor.

Abstract: A tree tie engageable about the trunk of a tree and fixed to a supporting post set adjacent the tree. The tree tie is such that it will yield about and freely permit the trunk of its related tree to grow or increase in size and is such that it will yield, buffer and absorb shock-like forces imparted into it upon rapid movement of the tree relative to the post. The tree tie comprises a collar established of a length of rubber or plastic hose engaged about its related tree trunk, a pair of elongate cable or wire lines extending from within the opposite ends of the collar to the support post with which they are secured by anchoring means and helical spring means within and carried by the collar and connected with the ends of the lines within the collar. The spring means operate to normally yieldingly impart tension on the lines whereby the tree is yieldingly prevented from bending and/or tipping in a direction away from the post to an excessive extent.