Abstract: The invention relates to a duplex basket strainerarrangement. Such arrangements include an outer casing having a first basket strainer receptacle at one end thereof, a second basket strainer receptacle at the other end thereof, a center plug receptacle having an inner wall surface and being disposed between the first and second receptacles, inlet means disposed in one side wall of the casing for permitting entry of a fluid into the casing, and outlet means in the other side wall of the casing for permitting exit of the fluid from the casing and a center plug disposed in the center plug receptacle. In accordance with the invention, the center plug comprises an elongated member, circular in cross-section, having an inflow stage and an outflow stage, and resilient means disposed around the periphery of the elongated member between said inflow and the outflow stages.

Abstract: A plurality of multi-functioning machines are simultaneously controlled by similar transmitter/receiver pairs, one of which is associated with a programmable controller and the other of which is associated with a machine. In the controller terminal, each transmitter of one such pair transmits a series of groups of serial command signals while its receiver receives corresponding groups of serial condition-responsive signals from the machine which update the controller. In the machine terminal, the transmitter of the other pair is connected to the controller receiver and the receiver is connected to the controller transmitter. Each transmitter derives input from a multiplexing matrix and each receiver outputs its information through a demultiplexer matrix. Each transmitter/receiver pair is driven by a free-running clock but the pair associated with the machine is slaved to the controller transmitter.

Abstract: Tear open cans having a band of plastics material adhered to the removable portion to mask the torn edge created on opening and either a guard bead formed in the body material or a fold in the remainder of the can end, to mask the torn edge remaining on the body after the removable portion is torn off.

Abstract: This disclosure relates to a manifold for use in conjunction with a reciprocating die set for controlling air pressure within a sealed die which is closed by a formed shell so as to make certain that the shell remains with the sealed die as it is retracted relative to a die center, the manifold providing for a predetermined vacuum within the sealed die, which vacuum being sufficient to assure retraction of the formed shell with the sealed die but at the same time being maintained sufficiently low so as to prevent damage to the shell during the ejection thereof from the sealed die.

Abstract: This disclosure relates to a pad for seats, back rests, mattresses and the like comprising a pad body of plastic material with recess means therein and a covering layer overlying the pad body, strips of reinforcing material sandwiched between the pad body and the covering layer, and at least selected ones of the strips being in alignment with the recess means whereby heat is dissipated from the covering layer through the recess means and the pad is reinforced by said strips.

Abstract: Method for packaging and dyeing yarns comprising the steps of winding at least one yarn on a provisional core, at the same time imparting to the yarn a continuous rotation and a rciprocating translation, and to advance the wound yarn continuously so that it comes off the said core. The tubular packaging that continuously comes off its support core has brought to bear on it a plurality of jets or sprays of dye directed radially, over the entire circumference of the packaging.

Abstract: This disclosure relates to a sliding ring seal for bearings which includes a pair of annular members, a pair of annular rings constructed of metallic material, a flexible non-metallic annular seal, and one or more annular retaining rings of magnetically attractable or ferromagnetic material with the seal being sandwiched between the magnetic rings and the retaining rings as well as within the pair of annular members.

Abstract: A frequency synthesizer in which the frequency of a variable frequency oscillator is controlled by means of a control signal and wherein means are provided for determining whether any frequency variation results from a drift in the frequency of the variable frequency oscillator means being provided for generating and maintaining an additional drift control signal to compensate for such drift. The drift control signal is inhibited from change either when it is detected that the control signal is in excess of that which would result solely from drift or the control signal is representative only of a quantisation error.

Abstract: The invention is directed to a metallic easy-opening can end, and to a method of manufacturing the same, the can end having a tear panel which is highly resistant to blowout pressure. The can end is first drawn between a preforming punch and a die to an outwardly open concave configuration, and is thereafter compression scored between a scoring punch and a scoring anvil to reduce the thickness of the drawn metal, thus forming the removable tear panel.

Abstract: This disclosure relates to a bearing assembly for large rolls, particularly rolls utilized in the paper making industry wherein the end portions of the rolls are tubular to define sockets and inserted in each socket is a sleeve which is particularly configurated to have a housing fixedly fitted therein, the sleeve and housing having axially spaced contacting surfaces and the housing carrying axially spaced bearings with the bearings journalling the housing on the stub shaft. The construction is such that with a roll blocked in place, the housing, complete with bearings and stub shaft, can be removed as a unit from the sleeve facilitating quick and easy replacement.

Abstract: A method of making a special high strength cement of the Portland type containing alite of improved hydraulic activity, wherein argillaceous and calcareous materials are combined to form clinker by heating in a kiln and the resulting clinker is ground to form a cement, comprising the step of introducing into the kiln a combination of mineralizers which contains fluorine and sulphur, provided that an alkali metal compound which can be a component of the aforesaid combination of mineralizers is included in the combination of mineralizers at least when the condition that the lime saturation factor be at least 0.98 and the silica ratio be at least 4 is not met.

Abstract: Electrostatic printing or coating apparatus including a main drum for transporting developer mix to an application or printing zone and having permanent magnet segments mounted within the drum for attracting developer mix to its exterior surface. An electric field is produced in the printing zone to provide movement of developer particles toward the article to be printed or coated and a field producing electrode is mounted within the drum adjacent the printing zone. A container conveyor extends past the printing zone to provide positioning of container portions to be coated, and a further drum having interior permanent magnet segment is positioned to remove developer mix from the main drum. The further drum may be rotated in the rotational direction opposite that of the main drum to reduce developer turbulence.

Abstract: A knife sharpener of the kind having a hollow scabbard or housing for a knife blade, and a blade sharpening device arranged to be engaged by the blade cutting edge as the blade is moved into and out of the housing. The sharpening device is mounted on the front end of a carrier member which has its rear end pivotally connected to the housing so that the front end can be swung towards and away from a top wall of the housing. A biasing spring urges the front end of the carrier towards the housing top wall. A reaction member is disposed between that housing top wall and the carrier member and is pivotally connected to the housing for movement about an axis which is parallel to the carrier pivot axis and is located between the ends of the reaction member. A rear end of the reaction member engages an upper surface of the carrier member at a location between the carrier pivot and the zone at which the biasing spring acts on the carrier member.

Abstract: An improved apparatus for packaging a plurality of flexible liquid filled pouches in an outer flexible container.Known similar machines have been limited in their speed of operation, such that production from such machines has not been as high as desired. To increase the speed of operation of the apparatus, it is proposed to utilize a feed conveyor incorporating a fluid-actuated clutch assembly which engages and disengages one of the conveyor pulleys from the conveyor belt. Operation of the clutch permits instantaneous operation of the feed conveyor assembly. Further, during high speed operation of the prior machines, flexible pouches tend to somersault when leaving the conveyor belt from the discharge end thereof. To prevent this somersaulting effect, it is proposed to utilize a pivotable barrier adjacent the output end of the feed conveyor. By utilizing the barrier, alignment of flexible pouches within the cradle assembly is achieved, even during high speed operation of the packaging apparatus.

Abstract: A travelling wave tube having cavities coupled for the fundamental mode uses a periodic permanent magnetic focussing structure. Ferromagnetic plates which carry the magnetic field to the electron beam path are provided with axial extensions adjacent to the electron beam to increase the magnetic field strength.

Abstract: This invention discloses a cartridge for containing electrodes which are fed to the nose guide of an electrical discharge machining apparatus. The cartridge has a carriage which contains the electrodes and moves with respect to the nose guide. An electrode clamp is provided to lock the electrodes in position in the cartridge together with means offering frictional resistance to sliding movement of the electrodes upon release of the clamp.

Abstract: This disclosure relates to apparatus for cleaning natural fibers of their contaminants by passing the same through a pair of rotary drum sieves each having a porous peripheral surface subject to a vacuum whereby natural fibers adhere to the porous peripheral surfaces and contaminants are drawn therethrough, the drum sieves being disposed with portions of their peripheral surfaces defining a throat through which the fibers pass, and means contiguous the throat for cutting off the vacuum effect of the first drum sieve whereby the fibers are transferred from the first drum peripheral surface to that of the second drum.

Abstract: The invention provides an improved clutter filter for a Pulse Doppler Radar utilizing rapidly changing p.r.f.'s. The filter is designed to reduce the effect of spectrum spreading which has previously caused difficulties.

Abstract: An assembly for a diaphragm clutch comprises a clutch cover, a diaphragm, connecting means pivotally connecting the diaphragm to the cover, and a supporting washer interposed between the connecting means and the diaphragm. The connecting means comprises a head element which abuts the front face of the cover, and claws which extend through openings in the cover and the diaphragm and which have turned-over ends which engage the supporting washer. The head element of the connecting means is of arcuate construction, forming part of a cylinder whose generatrices are parallel to the axis of the assembly.

Abstract: A device for stacking and packaging coins. The coins are inserted into the top of a vertically oriented cylindrical housing that can be closed at its lower end by a swivel-mounted closure. The interior diameter of the housing corresponds to the diameter of the coins to be processed. The stacked coins are rotated around their axes by several guide rollers set parallel to the axis of the stack and at least as high as the stack. They are wrapped in paper fed into the machine tangentially to the stack and then passed through a cutting device. Two edging hooks, one located at the top, the other at the bottom of the stack fold the excess paper over. Timing of the different stages is automatically adjusted.