Abstract: The invention is directed to a stop device for a lift type overhead door such as may be counterbalanced by springs and cables and having guide rollers operating in guide tracks at opposite sides of the door. The stop fixture is disposed one at each side of the door and includes a pivoted door stopping dog having an operating arm extending generally parallel to a door supporting cable. The dog is positioned at one side of a track flange directly opposed to a roller at the opposite side of such flange and the dog with its operating arm are tied to this roller in a fixed dimension relationship. The operating arm is connected to a door supporting cable so that if the cable breaks the arm is immediately actuated by a spring to swing the dog into engagement with the track flange, backed up by the opposed roller at the other side of the flange, to grip the flange therebetween and thus prevent the door from falling.

Abstract: A strain gauge pressure transducer comprising a housing having an internal pressure cavity across which is mounted a flexible elastomeric diaphragm that separates high and low pressure chambers in the gauge that the housing is arranged to separately connect the sources of high and low pressure, respectively. A range spring in the form of a leaf spring is anchored to the housing cantilever fashion in the high pressure chamber and to one side of the diaphragm to dispose the live length of same, as defined by a clamp device, in overlying relation to the diaphragm, to which the leaf spring live length is connected for deflecting movement thereof by the diaphragm.

Abstract: An electro-chemical system for liquid filtration for effecting removal of dissolved and suspended solids, undesirable ions, etc, therefrom, and decontaminating same, involving a basic electro-chemical filter device that comprises a canister of cylindrical form that in mounted position is vertically disposed and that defines a bore extending longitudinally of same, with the canister at its upper end being connectable to the source of liquid filrant and being closed off at its lower end. The canister adjacent its lower end is equipped with a cross tube extending therethrough and across the canister bore and having a width that is on the order of seventy-five percent of the width of the canister bore, with the cross tube having a tubular mandrel disposed in same and extending substantially coextensively thereof, and with the portions of the cross tube and mandrel disposed within the canister each being formed to define multiple liquid passing apertures thereabout.

Abstract: A method and apparatus for accomplishing stress relief in fabricated structures by application of dynamic loading induced by vibration to relieve residual stresses sufficiently to achieve dimensional stability. Maximum dynamic loading of the structure by use of an accelerometer attached to the structure is obtained by scanning a range of vibration frequencies to arrive at maximum output of the accelerometer corresponding to the maximum in the dynamically applied loading and tuning the vibration to a frequency corresponding to the peak in the acceleration curve.

Abstract: The invention relates to an ignitor box, or chamber, for use with a gas fired grill wherein a piezoelectric device strikes a spark that ignites the gas from an adjacent burner. This ignitor chamber is of flared form enclosed on three sides with the fourth side open and facing the burner for admission of gas into the chamber directly from the burner. The top and bottom walls of the chamber are also enclosed, but the top wall is provided with a raised cupola open at opposite ends for the circulation of air:(1) to effect the admission of oxygen for mixture with the incoming gas from the burner to provide a more combustible mixture for ready ignition when the spark is struck;(2) also to allow dissipation of combustion gases trapped in the ignitor chamber immediately after combustion.

Abstract: A roll-up type U-tube manometer of the type disclosed in Dwyer U.S. Pat. No.

Abstract: This invention relates to a pill box comprised of three parts including a shell bottom, a shell top and a slip ring so interrelated that the slip ring holds the top and bottom parts assembled with the slip ring rotatable relative to the assembled parts. The top and bottom parts are nonrotative relative to each other and are formed to cooperate to form a pill discharge opening normally closed by the slip ring with the ring formed with an opening adapted to be aligned with the discharge opening for discharge of a pill from the assembled box.

Abstract: A treadmill exercising apparatus comprising a generally planar frame equipped with a planar slider bed and head and tail rollers journalled respectively at the head and tail ends of the frame. The rollers are provided with elastomeric material crowns, over which rollers an endless nylon belt is trained. The frame at its head end is equipped with a cross member in which are threadedly mounted in spaced apart relation a pair of threaded screw members that adjustably support the head end of the frame, with each of said screw members being journalled in its own foot for rotational movement with respect thereto, and with the threaded screw members being coupled together adjacent their upper ends for simultaneous manual operation in the same direction in forward and reverse directions.

Abstract: A differential pressure gauge of the type comprising a controlling magnetic helix device carrying a pressure indicating pointer, the position of which is controlled by a magnet magnetically coupled to same and mounted on the free end of a helically coiled bourdon tube exposed to differential pressures within the gauge and anchored in the gauge housing at its other end for this purpose. The magnet has a planar pole face paralleling the axis of the helix and defines a magnetic axis that is normal to and intersects the helix axis. The gauge housing defines an integral one piece pressure wall that separates and physically seals the helix from the magnet and bourdon tube and defines within the gauge housing pressure cavity an operating space within which the magnet and its supporting bourdon tube are mounted and operate.

Abstract: A fluoroelastomer-hollow glass microsphere coating has been found to provide new and unexpected corrosion resistance to metal surfaces for protection against severely corrosive environments. The coating comprises a fluorocarbon elastomer and 3-50% by volume of hollow glass microspheres or microballoons having a size in the range of about 2-300 microns, preferably 20-200 microns. The hollow glass microspheres or microballoons substantially increases the corrosion resistance of a fluoroelastomeric liquid composition, yielding new and unexpected thermal and chemical resistance, particularly when the coating composition is applied in two or more layers.

Abstract: A water conditioning system is provided with an improved resin regeneration arrangement. Included in this system is a flow control valve associated with a brine injector mechanism which provides for a very slow rinse of the treatment resin at the end of the brine draw cycle. This provides for greater interaction between brine and resin and, therefore, more efficient and economical use of salt. The flow control valve utilizes a floating ball and a notched seat to permit substantially unrestricted flow when the ball is floating and brine is being supplied to treatment tank and greatly restricted flow when the ball is seated and untreated water is being used to rinse the brine from the treatment tank.

Abstract: A horizonally folding agricultural implement, such as a corn planter, comprising a main frame section with a hitch extending perpendicular therefrom for attachment to a vertically movable drawbar of a farm tractor, and a forwardly folding end wing section hinged to each outer end of the main frame section by a generally vertical pivot hinge, with the pivot hinge including a first and second set of pivot bushings rigidly attached to the abutting ends of the main frame section and the end wing sections respectively in vertical axial alignment with each other, the top end of the pivot pin having a mounting plate secured thereto, with a first hydraulic actuating assembly having one end operatively connected to the rigid plate and the other end operatively connected to the main frame section, and a second hydraulic actuating assembly having one end operatively connected to the rigid mounting plate and the other end thereof operatively connected to the folding wing section, thereby, upon actuation of the hydraulic

Abstract: A conveyor belt cleaner mounted on a transverse support member including an arm extending from a mounting bracket and a belt cleaner blade secured on the arm. A positioning arrangement is provided between the arm and the cleaner blade to allow the blade to rotate about the central axis of the arm within predetermined limits in either direction so as to allow the scraping edge of the cleaner blade to align with the surface of the conveyor belt being cleaned. A nut and a resilient washer are provided to secure the blade against a collar. An alternative securement includes a pin-and-slot connection which allows the same rotative action of the blade relative to the arm and having multiple seals against the entrance of dirt into the connection.

Abstract: The invention relates to a base structure for an outdoor barbecue grill mounted on a stand and including a bottled propane gas container supported on the base and which comprises a one piece frame to which the stand may be secured and having an integrally formed receptacle portion for mounting a propane bottle with supporting wheels mounted adjacent the receptacle end of the frame and integrally formed feet at the opposite end of the frame.

Abstract: A track switch assembly for toy electrically operated railroad trains comprising a plastic base having the usual main and branch lines and switch point arrangement therefor, in which the inside rails and the power rails of the main and branch lines are interrupted and have mounted in the interruptions a main line continuity rail structure and a branch line continuity rail structure that are electrically insulated for separate energizing and that are shaped for continuous electrical energy supply as the locomotive and cars one by one pass through the switch.

Abstract: This invention relates to a nozzle having a restriction in the form of an insert comprised of a pre-metering orifice in the nozzle that causes the emerging stream to flare out and impinge on the nozzle side walls and create turbulence to flood the nozzle and achieve a predetermined spray pattern. The premetering insert is formed to provide a non-uniform orifice length and is installed immediately ahead of the nozzle to reduce the velocity of the stream without disrupting the spraying performance of the nozzle and one or both parts are made from a plastic material such as nylon.

Abstract: A skirt board and installation arrangement adapted effectively to seal a moving conveyor belt, including skirt board sections interlocked with each other and individually adjustable and removable for replacement, which can be accomplished easily without major tools and without stopping the conveyor belt. The skirt board sections are simple to install individually, or by groups and these operations may be performed while the conveyor belt continues to run and when installed, maintains a proper and effective seal with the belt.