Abstract: Combined vehicle vent and escape hatch having a frame bounding a roof opening, a cover hingedly connected to opposite sides of the frame by hinge brackets for limited venting movement relative to one or more of the sides, one of the brackets being separable into cover and frame parts and normally prevented from separating by a cammable release rod engaging the cover part and a frame-backed movable stop plate backing the rod, and an emergency button instanding from the cover and when pushed operative to project the cover from all of said sides to full venting position and separate the parts of the separable bracket for enabling the cover, as an escape hatch, to be swung about the opposite bracket to open position. For extending the service life of the combined vent and hatch, an inner panel of the cover is backed by a rigid metal backup plate on which, for relieving the panel of stress, are hung the operating parts attached to the cover.

Abstract: System for mounting screen and other panels in vibrating and other screening apparatus in which longitudinal channel members interposed between laterally adjoining panels and anchored to apertured longitudinal supports, have space normally upright flexible sides each yieldably flexing inwardly in response to pressing of a panel edge thereagainst for seating the edge in an external groove in the channel side, the channel side, the channel member containing a longitudinally coterminous cavity opening upwardly through a relatively restricted slot, and the panel edge being releasably lockable in the channel groove by a T-shaped lock member having a stem insertible in said cavity through the slot for forcing the flexed side to return to upright edge-locking position.

Abstract: A hingeless ventilator having a frame attachable to a wall of a compartment about an aperture therein, an opening in the frame alignable with the aperture, a closure member swingable against a side of the frame for opening and closing the opening, guide members fixed to and instanding from an opposite side of the frame beyond opposite ends of the opening, and a spring rod mounting on opposite ends composite rollers riding on the guide members and connected under tension to the closure member for selectively positioning the closure member relative to the frame, the roller assemblies each having an antifriction bushing journalled on the spring rod and in and bonded to an elastomeric collar engaging an adjoining guide member.

Abstract: Method of blind anchoring for mounting on plasterboard or other dry wall panels having inaccessable backs, fixtures attachable by screws or bolts, the assembly having as a blind anchor member a strong stiff elongated machinable plate, as a puller a flexible string or cord passed through a central drilling in and knotted beyond the back of the plate, and a self-sticking adhesive coating on the front of the plate. Using a flange of the fixture as a marking template, an opening, within the perimeters of the flange and any screw holes therein, is cut through the wall. Sized to fit, the anchor plate with the string attached is inserted through the wall opening and after positioning manually by fingers extended through the opening, is pulled by the string against the inside of the wall. With the plate then held in position by the adhesive and the tensile force on the string, holes are drilled in the marked positions through the anchor plate for receiving the attaching screws.

Abstract: Mechanism for vibrating frame-mounted screen panels having a housing containing integeared drive and driven shafts to which are keyed interfitting counterweights and which are journaled at opposite end portions in laterally spaced pairs of spherical roller bearings seated in correspondingly spaced pairs of cylindrical sockets in opposite sides of the housing, and an individual oil reservoir for each socket bounded inwardly by a crescent-shaped flange for maintaining oil therein at a level for wettig rollers of a bearing therein, the reservoirs being fed during operation of the mechanism by oil splashed by the rotating counterweights from a pool in a sump in the bottom of the housing.

Abstract: A centrifuge screen basket mounting about an outer end portion a plurality of circumferentially spaced impeller blades in operation confronting and radially spaced inwardly of a seal ring of a centrifuge machine, the blades being uniformly tilted forwardly in the basket's direction of rotation for producing on such rotation a blast or force of air opposing and sealing against escape of fluid or other previously separated material past the basket's outer end.

Abstract: A system for decontaminating compressed gas having twin particulate desiccant-containing towers and a two-stage coalescer-containing precoalescer upstream of and connected to the towers by an inlet manifold, each tower having a pneumatically actuated inlet valve and a solenoid valve in the inlet manifold and an outlet valve in a common outlet manifold, the towers and precoalescer each having a drain valve and containing in a lower part an upwardly acting compactor for respectively compacting the desiccant and preventing oil leakage, the towers above a predetermined pressure of gas from the precoalescer and under control of the solenoid valves and a timer each alternating between decontaminating and regenerating cycles and together alternating in decontaminating cycles for continuously supplying decontaminated gas to the outlet manifold, and the outlet manifold in turn supplying decontaminated gas as actuating gas to each of the valves and compactors.

Abstract: Wrench socket assembly for holding wrench sockets with their drive or wrench handle-engaging ends up, each socket being tightly held by and swivelable relative to an elastomeric ball received in and of somewhat greater cross-sectional area than its nut or work-engaging opening, the balls being molded on and, when worn, discardable with studs releasably mounted upright on a supporting surface of a holder and being arranged in the holder in seleted size sequence, and the size and shape of the work opening of each socket being anodized or otherwise imprinted on its drive end.

Abstract: Vibrating screening apparatus in which one or more screen panels are supported between spring-mounted side plates on crosstubes and the several parts of the apparatus are connected primarily by bolting, the crosstubes by U-bolt and tube saddle clamps to framing for attaching the screen panels to the apparatus, the bolted connections by avoiding initial and residual stress and yielding as needed to operational stress imposed by vibrating mechanism of the apparatus, not only enabling the apparatus to operate for extended periods without fracture of parts but, should a fracture occur, permitting and facilitating selective removal of the fractured part for repair or replacement.

Abstract: A feed box assembly including a feed box for feeding a slurry or other mixture to a screen, the box having an adjustable gate for controlling the rate and impingement angle of the feed on a screen and seals on the gate and cooperating fixed deflectors in and on the box for preventing the fluid mixture during feeding from spewing around sides of the gate.

Abstract: Dump valve assembly for a cooling system in which the coolant is water without antifreeze, the system having a compressed air-operated dump valve supplied with operating air from a special reservoir charged through a check valve with compressed air from an associated compressed air system and, under emergency conditions when the associated compressed air system is shut down, automatically operating the dump valve by discharging compressed air thereto under control of a temperature responsive solenoid-actuated valve.

Abstract: A fluid actuated nut having a cylindrical casing engageable at an inner end with a base, the casing containing a coaxial relatively axially shiftable plunger having an inwardly opening partial central bore for threadedly receiving a shank of a bolt, a compression spring acting outwardly on the plunger and inwardly against the casing, and a fluid pressure chamber in the casing outwardly of the piston, the nut being applied by screwing the piston onto the bolt shank to the point of engagement of the inner end of the casing with the base and tightened by sequentially compressing the spring by fluid injected under pressure in the fluid chamber for shifting the casing away from the base, turning the casing to reengage the base and releasing the fluid pressure to expand the spring, and repeating the sequence as necessary to produce the desired tensile and/or compressive force, the nut being loosened by applying fluid pressure to advance the plunger for compressing the spring and disengaging the casing from the base

Abstract: A method of applying and removing a fluid actuated nut, the nut having a cylindrical casing engageable at an inner end with a base, the casing containing a coaxial relatively axially shiftable plunger having an inwardly opening partial central bore for threadedly receiving a shank of a bolt, a compression spring acting outwardly on the plunger and inwardly against the casing, and a fluid pressure chamber outwardly of the piston, the nut being applied by screwing the piston onto the bolt shank to the point of engagement of the inner end of the casing with the base and tightened by sequentially compressing the spring by fluid injected under pressure in the fluid chamber for shifting the casing away from the base, turning the casing to reengage the base and releasing the fluid pressure to expand the spring, and repeating the sequence as necessary to produce the desired tensile and/or compressive force, the nut being removed by applying fluid pressure to advance the piston for compressing the spring and disengagi

Abstract: In a static sieve assembly having a housing for mounting a sieve or screen, a feed box having a discharge spout for feeding material tangentially to and across the sieve, a side of the spout having flexibly connected fixed upper and movable lower parts, and an actuator on said feed box and acting on said lower part for controlling the rate of feed to the sieve by varying the area of a discharge opening of the spout.

Abstract: Two-stage precoalescer unit for filtering, coalescing and separating from contaminated compressed gas loose oil and water in a first stage and oil and water aerosol or vapor in a second stage, the coalescers of the first and second stages being mounted in tandem in a perforate-walled canister contained in a housing within an imperforate tube, the first-stage coalescer relatively permanently for periodic purging by gravity and a reverse flow of gas and the second-stage coalescer removably, for purging over an extended period by a reverse flow of purge gas and thereafter removal and replacement on detachment of a lower from an upper part of the housing, and a spring-pressed floating follower in the housing above and acting downwardly on the canister for compensating for manufacturing tolerances in components of the precoalescer unit.

Abstract: A pressure gauge assembly for gauging and having an open-fronted casing connectable through check valving to one or more pressure lines, the valving being front-ported for receiving and normally held open by a plug inserted in each such port, the gauge of the assembly being so connected to the casing as to be removable therefrom only after removal of the one or more plugs and consequent closing of the check valving without either dismounting or uncoupling the casing from any pressure line.

Abstract: A gas-actuated relay valve having an outlet port alternately connectable through opposed inlet and exhaust valve seats to inlet and exhaust ports, a lower downwardly opening valve head spring-urged for normally closing the seat to the inlet port, an upper upwardly opening normally unseated valve head for closing the seat to the exhaust port, and coaxial inner and floating outer pistons respectively connected to the lower valve head and mounting the upper valve head, the outer piston presenting a larger area than the inner piston to actuating gas received in a common actuating gas chamber for preventing loss through the exhaust port of operating gas introduced through the inlet port by closing the upper exhaust valve seat before opening of the inlet valve seat.

Abstract: A method of making a frusto-conical centrifuge screen basket of side-connected segments formed of wedge-shaped screen wires connected and backed by tie bands welded thereto, in which the segments are each fabricated in the flat by clamping laterally spaced screen wires to a flat work surface and fusion welding laterally spaced tie band sections to the screen wires, and the tie band sections are so precurved and positioned during welding as to form in the finished basket a plurality of laterally spaced parallel continuous circumferential tie bands each centered on and perpendicular to the basket's axis and together reinforcing the basket against centrifugal forces imposed in service.

Abstract: Ventilator for roof or other wall of a vehicle in which an opening in the wall is normally closed by a closure member and the closure member is connected to the wall at each of a pair of opposite sides by a pair of spring-and-link assemblies enabling the closure member to be opened to any of five positions and yieldably held by spring force in closed and each open position. By mounting inside the spring-and-link assemblies a trim ring and coacting screen plate mounted respectively on the wall and the closure member, the ventilator is adapted to screen against entry of bugs or other foreign matter in all open positions of the closure member.

Abstract: A combined escape hatch and ventilator for a vehicle roof having a frame bounding its opening in the roof, a cover hingedly connected to the frame and normally limited in opening movement as a ventilator relative to one or more sides of the frame for ventilating an interior of the vehicle, one of the hinge connections being separable and formed of interfittable parts fixed respectively to the frame and cover and releasably connected by a latch pivotally mounted on one of the parts, the latch having a cam engageable with a lug on the other part for normally clamping the parts together and in an emergency enabling the parts of the separable connection to be disengaged and the cover swing about the connection on the opposite side of the frame for converting the roof opening to a fully openable escape hatch.