Abstract: The invention resides in a rotary machine in which an electromagnetic spherically shaped armature and a pump impeller being enclosed in a casing are born, as a unit, by a frusto-spherical bearing of which the convex (or ball) part rotates, and in which frictional rotatable seal means are carried by an annular wall extending inwardly of the casing between armature and impeller supports the fixed bearing part and sealing means which isolate the spaces in which run the armature and the impeller respectively.

Abstract: A bolt fastener of known kind for engagement in a socket is screwthreaded at its outer end, which protrudes for engagement with a nut. The fastener has a waisted portion, including a taper, towards the inner end of the fastener, the taper converging away from the inner end. The waisted portion is loosely surrounded by a collar with a slit along it. The collar grips the socket when the nut is tightened to withdraw the fastener relatively to the collar, the collar thereby being expanded by the taper. The present fastener is used wholly within the socket and, instead of being screwthreaded externally, has a bore which extends axially from the outer end and is screwthreaded for engagement with a headed bolt.

Abstract: The present invention comprises a fluid pump motor unit and a controller unit which controls the output of the pump/motor irrespective of the speed of the power source driving the pump/motor unit.The pump/motor unit comprises a cylindrical housing within which there is arranged at least one rectangular expansible cylinder assembly mounted on a crankshaft in a radial pattern, the cylindrical assembly being pivotally mounted within the housing for movement about trunnions, the rectangularly adapted piston assembly within said housing being journaled on a crankshaft which crankshaft with respect to the centerline of the cylindrical housing has a rotation parallel to, but spaced from, the centerline of the housing. The pivotal oscillation of each cylinder assembly alternately opens a port for the inflow of a fluid and subsequently closes that port while simultaneously opening another port for the outward flow of the fluid under compression as the piston moves toward the top of the chambers.

Abstract: A method of, and apparatus for, performing comparison calibrations of temperature sensors using a temperature controlled fluidized bath. The bath is operated such that prior to recording the indications of the temperature sensors the supply of fluidizing medium to, and the heat exchange with, the particulate material within the bath are simultaneously terminated. It has been found that when this procedure is adopted considerably better temperature stability is experienced in the bath than when fluidization is maintained throughout the entire period of calibration.

Abstract: A page keeper having a spring clip such as a clothespin and being removably coupled to a music rack thereby with a spring wire fixedly attached to the spring clip and extending therefrom with at least one spring coil at a first corner bend and with a second corner bend disposed over a page on a music rack or other reading aid and terminating in a smooth surfaced ball for reducing slidable friction to any page it is resting upon and keeping in an open position.

Abstract: A fish lure in one form has a hollow cylindrical body with an open front end in combination with leader connection means within the body a substantial distance from the front of the body. In another form the leader has a skirt and water divertor mounted thereon in trailing relation to the body.

Abstract: A marginal floor brush spacedly surrounding the rim of a chambered sanding machine base. The brush meets the floor and confines wood dust developed by a rotary sanding unit in the base. The dust is drawn from under the brush by a vacuum unit in the machine. This is facilitated by disposing the brush floatingly free of the machine to stir up and separate the dust particles and leave the floor clear of dust as the machine moves on.

Abstract: An operational amplifier is provided with two current outputs instead of the usual one voltage output. The amplifier has two current inputs, ideally zero input impedance and ideally infinite current gain and output impedance.

Abstract: A sway stabilizer for trailing vehicles which comprises a camming assembly to be attached to the towing vehicle and a tensioned lever assembly which is to be attached to the trailing vehicle and which cooperates with the camming assembly. There is also provided an additional embodiment having solenoid actuated means which cooperate with the camming assembly to limit the angle which can be made between the axis of the trailing vehicle and the towing vehicle to prevent jack-knifing of the trailing vehicle.

Abstract: A traffic control system particularly suitable for aiding the blind includes an interrogating FM radio transmitter-receiving unit, which can be incorporated into a cane or the like, and a responding FM radio receiver-transmitter unit operatively associated with the traffic signal light control circuits at a street intersection. The interrogating unit transmits an FM signal modulated by a coded signal indicative of which direction its blind operator wishes to cross the intersection. The responding unit, in response to the FM signal received from the interrogating unit, transmits an FM signal modulated by a coded signal corresponding to that received from the interrogating unit whenever the traffic signal light conditions are such that a safe crossing in the desired direction is possible.

Abstract: The invention relates to a phasemeter, particularly for torque measurement, using trigger devices to convert phase related input analogue signals to digital signals the mark space ratio of which is a measure of phase displacement between the input signals, and uses a technique of attenuating an input signal, until no change in mark space ratio of the digital output is produced, for ensuring that the triggers trigger at the same level, and also provides for complementation of the trigger outputs as a check on the operation of the triggers.

Abstract: An oscillatory stirring apparatus for liquids in a container comprising a stirring assembly attachable to said container and means to supply at least two cyclically alternating flows of air under positive and negative pressures to said stirring assembly, said stirring assembly comprising a housing containing at least two pressure-activated chambers spacedly arranged within said housing, a stirring rod dependingly supported within said housing, means interconnecting a portion of said rod within said housing with each of said chambers, means on the exterior of said housing to connect said chambers to said air flow supply means and means to secure said housing to said container in sealing relationship with an opening in said container.

Abstract: A combined barbecue pit and oven comprising a sheet metal box having a two-level top portion, a transverse intermediate wall within said box dividing the same into a lower chamber and a higher chamber, said two chambers communicating with each other through a large opening therebetween, liftable lids covering the top of each chamber, a lower grill slidably disposed within said lower chamber and an upper grill slidably disposed within said higher chamber, a door at the front of said lower chamber and a clean-out port downwardly of said door, a fire box disposed at the bottom of said lower chamber, and air inlet cut-ins on the side wall adjacent said lower chamber, a drip pan disposed within said higher chamber directly below said upper grille, and a chimney disposed on a top wall portion laterally of the higher chamber lid.

Abstract: A frequency detection device adapted to detect in which of a plurality of frequency bands an input signal occurs comprises band pass filter means for selecting from the input signal the output signals in each of the bands and detecting means responsive to said output signals to stop the scanning action of the scanning means wherein the band pass filter means comprises a band pass filter and means for scanning the filter through different bands in turn, and an indicator actuated by the stopping of the scanning action to indicate the frequency band in which the input signal has occurred.

Abstract: A plier-type tool for producing guide-line clips -- known as trigs -- as needed on bricklaying jobs. The tool receives the trig-material strip from the side, and its jaws are formed to properly set the leading portion of the strip in the tool, to indent such portion to fluted form on the closing of the jaws, and to accurately guide the remaining strip portion for bending it together with the leading portion.

Abstract: A display stand containing a horizontally-rotatable group of pockets carried by a vertical spindle, the pockets open at the top. A plastic sheet covers the pockets to keep out falling dust, and is perforated for the passage of the spindle. When the stand is tilted to position the spindle horizontally, the sheet assumes the position of a side closure for the pockets, preventing their contents from moving out of the pockets.

Abstract: For accurate measurement of the linear movement of a traveller relatively to a low-torque rotary transducer, a cylindrical pulley on the transducer is driven by a wire which extends between this pulley and an idler pulley to embrace both; the free ends of the wire are fastened to the traveller to form a taut loop of length exceeding the maximum stroke of the traveller. A box-section cover enclosing the driving system (except for a lengthwise slot for passage of the traveller) is closed at one end by the transducer casing and at the other end by a box carrying the idler pulley; slotted holes for screws fastening the cover to the transducer allow the wire loop to be pulled taut. The wire loop passes through slits in cleaning plates adjacent to each pulley. Plates on the traveller locate it in the cover after initial assembly and until the device is set up for use.

Abstract: A stirring rod is inserted through a resilient suspension diaphragm which is sealably secured to the underside of a closure for a flask or container. An L-shaped support bracket is attached to the outer, upper surface of the closure. The upstanding leg of the bracket carries an expansible pressurizable chamber which is connected, on its outerside, to a supply of single phase ACA and, on its innerside, to the upper portion of the stirring rod extending above the closure by a horizontal link which, at one end, is fitted over the stirring rod and at the opposite end is secured to the expansible chamber. The horizontal leg of the bracket which is secured to the closure carries, at its extremity opposite the upstanding leg, support means, to the upper end of which is attached a camming plate. The camming plate extends toward the upper portion of the stirring rod but stops short of this portion to allow controlled lateral movement of the stirring rod toward the camming plate.