baber/WOPTO huggingface dataset:
Patent GB-1177560-A (GB)
Title: Jet Nozzle.
Inventor: FREEMAN FREDERICK
IPC: F02K1/48
Filed: 1967-12-28
Abstract: 1,177,560. Jet propulsion nozzles. ROLLS-ROYCE Ltd. Dec.20, 1968 [Dec.28, 1967], No.58860/67. Heading F1J. A jet nozzle comprises a cylindrical member whose downstream end is provided with a plurality of angularly spaced apart, alternately arranged first and second flaps each of whose adjacent pairs of longitudinal edges are inter-connected by a plurality of lobe wall members, there being means whereby the assembly may be moved so as to provide a series of lobes of varying radial depth. The jet nozzle shown comprises a jet pipe 10 at the outlet of which is mounted by means of struts 14 a fixed centre body 16 of doubleconical form. A cylindrical sleeve 20 is mounted on the outer surface of the jet pipe by means of rollers 22 and is movable axially by actuator 21 between a fully retracted position shown in Fig.2 and the positions shown in full lines and chaindotted lines in Fig in which it defines with the centre body a convergent nozzle and a convergent-divergent nozzle respectively. A cylindrical member 24 is mounted externally of the sleeve 20 and is supported by means of rollers 25 within a fixed pod 27, the member being movable axially by means of an actuator 30. Series of flap members 32, 33 are pivotably mounted at the downstream end of the cylindrical member 24 in alternating assembly, the adjacent longitudinal edges of the flaps being interconnected by wall parts 37 which are pivotably connected at 40, the arrangement being such that when the cylindrical member 24 is in its upstream position Fig.1, the flaps 32, 33 are inoperative and are in a substantially cylindrical assembly, but as the member 24 is moved downstream the alternate flaps 33 engage against abutment surfaces 43 on the fixed pod 27 and so are projected inwardly while the intermediate flaps 32 which do not engage against the abutments are moved radially outwardly by the pressure of the jet stream, whereby a lobed nozzle is provided which is effective to silence the jet noise. The side walls of the lobes are formed by interconnected parts 37. In operation at taxi-ing of the aircraft the parts would be disposed as shown in Fig.1, the sleeve 20 defining with the centrebody 13 a convergent nozzle. At take-off when maximum silencing is required, the sleeve 20 would be retracted and cylindrical member 24 extended so as to define a lobed nozzle outlet of maximum radial extent. At subsonic cruise the silencer would be retracted and the sleeve 20 extended to the full line position shown in Fig.1 to define a convergent nozzle, and at supersonic cruise the sleeve 20 would be fully extended to the chain-dotted position Fig.1 in which the parts define a convergent-divergent nozzle.
Patent GB-1417970-A (GB)
Title: Processes and means for producing or treating films of plastics material
IPC: B29C48/91
Filed: 1971-12-18
Abstract: 1417970 Treatment of polymeric films LAMBEG INDUSTRIAL RESEARCH ASSOCIATION 8 Dec 1972 [18 Dec 1971] 58905/71 Heading B5B A sheet of molecularly orientable synthetic thermoplastic polymeric film is passed between two moving surfaces forming a pressurized nip, the surfaces being cooled so that on passing through the nip the film material goes from the plasticized to the unplasticized state, the film being mechanically worked to break up spherulites as it passes through the nip so that its tendency to fibrillate is decreased. The film may be polypropylene, high density polyethylene, polyamide or polyester and may include small amounts of polystyrene or chalk. Preferred apparatus consists of a 2¢ inch extruder 10 having a 20 inch slot die with lips 0À022 inch apart at 260 C. to give a film of 0À005 inch. The extrudate is nipped between a smooth chill roll 16 at 30 C. and a silicone rubber roll 18 at 85 C., both rolls having a peripheral speed of 50 feet/min. The surface of the roll 18 is kept cool by a spring-loaded cooling roll at 30 C. The film is slit by blades 22, drawn in a ratio of 1 : 7 in a hot air oven 24 at 150 C., annealed at 160 C. in oven 30, and shrunk by 4% on godet rolls 32. The product may be woven and used as a carpet backing, or twisted to form fibrillated twine. Instead of being slit and annealed the film may be passed through a pinned roll fibrillator (Fig. 2, not shown). In other arrangements (Figs. 3-7, not shown), one or both rolls may be cooled by partial immersion in a cooling bath, a silicone rubber belt passing round either roll may form one of the nip surfaces, or the rubber roll may be above or below the chill roll. One or both nip surfaces may be roughened to give an opaque film, e.g. by depressions or protuberances having a frequency of at least 100 per inch. The rolls may be wider than the film so that the driven roll drives the other by direct contact.
Patent GB-1212440-A (GB)
Title: Inhibited organosilicon compositions
IPC: C08L83/04
Filed: 1968-12-18
Abstract: 1,212,440. Inhibited-cure organosilicon compositions. DOW CORNING CORP. 18 Dec., 1968 [16 Jan., 1968], No. 60170/68. Heading C3T. A curable composition comprises (A) an organosilicon compound or mixture consisting of (1) 0-99.9 wt. per cent of an organosilicon compound having 1-3 monovalent hydrocarbon, halohydrocarbon free of aliphatic unsaturation, or cyanoalkyl radicals per Si atom and at least 2 aliphatically unsaturated monovalent hydrocarbon radicals per molecule, any remaining Si valences being satisfied by divalent O atoms or hydrocarbon, hydrocarbon ether or haloarylene radicals linking Si atoms, and (2) 0À1-100 wt. per cent of a compound wherein each R is a methyl or vinyl radical and x is 1 or 2, and (B) an organosilicon compound containing an average of at least 2 Si-bonded H atoms per molecule, and up to two monovalent hydrocarbon or halohydrocarbon radicals free of aliphatic unsaturation or cyanoalkyl radicals per Si atom, any remaining Si valences being satisfied by O atoms or divalent groups as in (1) above and (C) a Pt catalyst providing at least 0À1 p.p.m. Pt based on (A) plus (B), there being, per 100 parts by weight of (A) plus (B): 0-99À45 parts of (1), 0À05-50 parts of (2) and 0À5-99À95 parts of (B). Component (2) inhibits cure at room temperatures. In examples a very wide variety of compositions is prepared using: as (1) vinyl-terminated polysiloxanes, and in Example 7 a variety of polysiloxanes having vinyl, allyl, butynyl or cyclopentenyl radicals, with methyl and optionally phenyl chlorophenyl, benzyl, phenylethyl, trifluoropropyl and cyanoethyl radicals, and optionally methylene, phenylene or phenylene-oxy-phenylene linkages; as (2) as (B) various hydrogen-terminated polydimethylsiloxanes or trimethylsilyl-terminated polymethylhydrogensiloxanes or, in Example 8, various silanes, siloxanes, polysiloxanes and silcarbanes containing Si-H groups; and as further components hydroxy-terminated polydimethylsiloxanes, ZnO, Fe 2 O 3 , quartz, Zr silicate and calcined diatomaceous earth.
Patent GB-1325917-A (GB)
Title: Vapour control system for an engine
IPC: F02M35/024
Filed: 1970-12-22
Abstract: 1325917 Treating IC engine charge UNIVERSAL OIL PRODUCTS CO 22 Dec 1970 [29 Dec 1969] 60720/70 Heading F1B [Also in Division B1] Hydro-carbon vapour absorbing device comprises at least one absorption zone containing a mass of absorbent material which receives and adsorbs vapours which evaporate from an engine fuel system and includes means to distribute a supply of oil to the upper portion of said mass and means to remove oil from the lower portion of the zone. A vehicle engine 1 has an air inlet pipe 3 leading to a carburetter 2 which has a float chamber 4 and supplies a manifold 5. Air is drawn through a filter element 9 enclosed by a housing 6. A pipe 13 leads from the engine oil supply and feeds oil to the top of the filter element, the oil passing into and over the surface of the filter element and draining into a groove 15 to be returned by a pipe 16 to the crank-case sump. A positive crank-case vent valve 19 allows vapours to return to the inlet manifold 5. When the engine is stopped or idling fuel vapours from the float chamber issue from an interval vent, pass upwardly into the interior of the filter element and are absorbed. Vapour from the fuel tank is conducted by a line 11 to the inlet pipe or alternatively by a pipe 11' to the exterior of the filter element. When the engine speed is increased the flow of air removes at least part of the absorbed vapour from the filter element and carries it into the engine. In an alternative arrangement, Figs. 2, 3 (not shown) the fuel vapours are absorbed in material contained in a separate canister connected to the engine by piping including a two-way valve. The fuel tank vent line is permanently connected to the canister, as are oil inlet and outlet pipes. The two-way valve is operated either directly by, or in accordance with the position of the throttle and in the closed throttle position moves the valve so that the float chamber vent pipe is connected to the canister and as the engine speed increases, the valve moves so that purge air drawn in through the top of the canister is fed to the air-filter and through the filter element into the engine. The absorbent material is carbon, alumina, silica or silica-alumina in the form of spheres or pellets, a fibrous mat, corrugated paper or an open-cell foam of polyurethane, polyethylene or polystyrene.
Patent GB-612310-A (GB)
Abstract: 612,310. Calculating-apparatus. TELLERY, L. M. NATION-. April 13, 1945, No. 9251. [Class 106 (i)] The device comprises a set of cylinders, the lower part of one of which is shown developed in Fig. 8B, carrying tables representing partialproduct figures plus figures transferred from a lower denomination. One factor is set by adjusting the cylinders until the factor is displayed by digits 18 on the ends of the cylinders appearing through fixed apertures 9. The second factor is indicated by a series of nine markings on the right-hand edge of the casing. The partial products are read through apertures in shutters 5, one for each cylinder, which (except in the units denomination) are each moved longitudinally of the cylinder in accordance with the setting of the next lower cylinder by bevel gears 22, 23, Fig. 3, a sleeve 24 and a pinion 25 engaging a rack (not seen) on the shutter. The aperture is thus moved to display that figure of the table equal to the partial product figure plus the figure transferred from the lower denomination. Some of the apertures in the shutters 5 are of double width and one half or the other is exposed by moving a slide 10, Fig. 5. When a consequent transfer arises, the displayed figure is marked, e.g. ringed as shown, or coloured, as an indication that the shutter of the next higher aperture must be pushed to the right by the slide 10 to display a figure on the higher table which is equal to the partial product plus a transferred figure plus a consequent transfer.
Patent GB-1242909-A (GB)
Title: Traction vehicle
IPC: B61J3/12
Filed: 1968-12-24
Abstract: 1,242,909. Railway mules; rail/road vehicles; rail vehicle couplings. WHITING CORP. 24 Dec., 1968 [29 Feb., 1968], No. 61391/68. Headings B7D, B7H and B7T. A traction vehicle is provided with a coupling which transfers a portion of the weight of a coupled railway car to the vehicle, the said coupling being pivoted about a horizontal axis 34 and connected with the vehicle by a bar 24 pivoted at both ends about vertical axes 25, 29, wherein the coupling comprises a pair of plates 35 connected by tube 38 and cross-bar 39 and having guided between bars 42 on the plates jaw plates 44 which contact the lower surface of car sill 55 with blocks 40 of the plates 35 contacting the upper surface, the plates 35 also supporting an hydraulic ram 52 having on the end of the piston rod or ring 54 for engagement with draft hook 58. Contraction of ram 52 causes the coupling to act as a rigid extension of the railway car and screw device 47 adjusts the spacing between plates 44 and blocks 40. Hydraulic means which cause the body of the vehicle to rise and the rail wheels to come closer together effects a transfer of some of the car weight to the vehicle. The vehicle body can be lowered to enable road wheels 15 to support the vehicle with the rail wheels pivoted upwardly. In a modification, Fig. 5, an hydraulic ram 60 causes the plates 44<SP>1</SP> to contact the car sill.
Patent GB-1195062-A (GB)
Title: Structures comprising Microcrystalline Collagen and Methods of Forming them.
IPC: A23P20/10
Filed: 1967-03-31
Abstract: 1,195,062. Paper. FMC CORP. 31 March, 1967 [27 May, 1966], No. 61485/69. Divided out of 1,195,061. Heading D2B. Fibrous base materials are formed of fibres at least portions of which are coated with a water-insoluble, microcrystalline salt of collagen of which at least 10% by weight consists of bundles of aggregated tropocollagen units forming particles whose maximum dimension in any direction does not exceed 1 micron, the salt being substantially free of individual tropocollagen units and degraded derivatives thereof and serving as a bonding agent between the fibres. The collagen salt constitutes a minor proportion by weight of the fibrous base material. The coating may include a collagen crosslinking agent. The coatings may be applied to fibres of mineral substances, glass metals, wood, cork, cotton, ramie, flax, regenerated cellulose, cellulose-esters, -ethers, leather, animal hair, gelatine, polymethacrylates, polyesters, polyamides, polyolefines, 'polyvinyl resins, polycarbonates, polyurethane, natural and synthetic elastomers. The collagen salt may be the composition described in Specification 1,143,533. When used as a wet strength additive for paper the collagen can be prepared in situ. The collagen salt not only improves the physical properties of water-laid products but also serves as a dispersing agent for the fibres such as rayon and polyesters as well as natural paper-making fibres. Cross linking agents mentioned are ureaformaldehyde and melamine-formaldehyde precondensate, formaldehyde glyoxal, acetaldehyde, glutaraldehyde, potassium alum, chrome alum, iron alum, basic aluminium acetate, cadmium acetate, copper nitrate, barium hydroxide and water-soluble diisocyanates. Examples 3) to 12) relates to the formation of water-laid fibrous products wherein the collagen dispersions are added to the fibre slurries. The fibres employed were in examples 3) and 4) wood pulp, 5) fibres obtained by shredding Kraft wrapping paper, 6) unbleached Kraft plup, 7) 8) and 9) 50% Kraft pulp and 50% rayon, 10) 85% rayon, 15% vinylchloride-vinylacetate poymer, 11) rayon, 12) 50% polyacrylonitrile, 50% rayon.
Patent GB-1247369-A (GB)
Title: Yellow azo dye developers and their use in photographic materials
Inventor: BUSH WALTER MONROE
IPC: G03C8/18
Filed: 1968-12-30
Abstract: 1,247,369. Azo dyes. EASTMAN KODAK CO. 30 Dec., 1968 [29 Dec., 1967], No. 61618/68. Heading C4P. [Also in Divisions C2 and G2] The invention comprises azo dyes of formula wherein R is an alkoxy group and X is a yellow azo dye moiety. The dyes are used as dyedevelopers in the dye-developer diffusion transfer process described in Specification 804,971 (see Division G2). In examples the preparation by azo coupling of dyes wherein the residue shown above is linked to the phenyl residue of a phenylazo-pyrazolone dye either by way of an ethylene group or directly is described
Patent GB-669966-A (GB)
Abstract: 669,966. Domestic fire-grates. JONES & CAMPBELL, Ltd. May 30, 1950, No. 13442/50. Class 126. A door for the ashpit front of a domestic' fire-grate having an air inlet opening for the supply of air beneath the grate comprises a door frame which can be removably attached to the ash-pit front, over the air inlet, a flap pivoted to the frame and weighted so as normally to close the opening in the door frame, and adjustable regulating means for opening or closing an auxiliary air inlet in the frame when the flap is closed and for opening or closing the flap when the auxiliary air inlet is open. As shown, the door frame 10 is attached to the ash-pit front by hooks 13 on brackets 11. The main rectangular opening in the door frame is closed by flap door 28 with a weighted lower end mounted on trunnions 30 fitting into recesses in the brackets 11. The auxiliary air inlets 16 are closed by the regulating knob 25 mounted on a threaded spindle passing through a screwthreaded boss 19. The threaded spindle is provided with an enlarged head 21 and the flap door 28 is provided with a lug 32 offset from the principal plane of the flapdoor. When the auxiliary air inlet is open, the head 21 of the spindle engages the lug 32 to open the flap-door 28. The engaging faces of the regulating knob 25, the door frame and the flap-door 28 are formed as truly flat surfaces.
Patent GB-688252-A (GB)
Abstract: 688,252. Condensing zinc. BREYER, F. G., and DELRUELLE, A. Aug. 31, 1949 [Feb. 24, 1949], No. 16454/51. Divided out of 688,213. Class 82(i) In a process for the recovery of metallic zinc from a hot gaseous product of the reduction of oxidic zinc ore through partial combustion of carbonaceous material present with the ore, the product containing zinc as dilute vapour subject to reoxidation by other gases present on cooling, air is completely excluded and the gaseous product, while still at a temperature at which zinc is substantially unoxidized, is combined with enough cool non-oxidizing gas to chill the product abruptly to a temperature below the melting point of zinc, the resultant zinc dust being separated from the gases. Fig. 1 shows apparatus in which zinc vapour-containing gases pass from furnace chamber 18, through duct 18d to a mixing chamber 41 formed as a hollow body of revolution, e.g. a cylinder or cone, into which cool non-oxidizing is introduced tangentially through inlets 42a and 42b. The chilled gases pass through cyclones 45, 48 and 50 in series to separate out the bulk of the zinc dust and then through a heat exchanger 52 in which they are further cooled. The gases are then divided, part going to bag filters 57 to remove the remaining zinc and part being recirculated to the mixing chamber 41 to serve as chilling medium. Alternatively all the gas from the heat exchanger may pass through the bag filters, a part of the gas from the filters being recirculated as chilling medium. Specifications 413,337 and 460,620 are referred to.
Patent GB-2006920-A (GB)
Title: Bearing Support for a Crosshead Slide of a Reciprocating Engine
IPC: F16M1/02
Filed: 1978-10-19
Abstract: A support structure for a crosshead slide bearing of a reciprocating engine, comprising a frame (1) having a pair of vertical inner walls (4) each supported at at least one point across their width by a web structure (6) of the frame, and strengthening walls (14) extending over substantially the whole height of the slide bearing between the outer edges (15) of the vertical inner walls (4) and the web structure (6). By this means a rigid structure may be provided which does not suffer from stress peaks as occur in previous such structures using horizontal cross-ribs. <IMAGE>
Patent GB-2012718-A (GB)
Title: Mounting frame, in particular for attaching equipment to a tractor
IPC: B62D49/06
Filed: 1978-12-20
Abstract: A mounting frame 5, 7 is adapted to be detachably connected to a tractor 1 and is provided with means 8 for mounting equipment thereon, in particular devices operative laterally of the tractor, such as a ditch cleaner 9. The construction aims to deal with the problems encountered in prior art arrangements, particularly with tractors having sound insulated cabs, where there is little room for connection of an attachment between the cab and the front wheels. Thus the part of the frame 5 with the mounting means 8 for the device 9 can be connected to a rear wheel 4 of the tractor 1 by means of rotary attachment means 17, 19. <IMAGE>
Patent GB-2014332-A (GB)
Title: Positioning Machine Tools
IPC: G05D3/00
Filed: 1979-01-23
Abstract: In a system for controlling positioning of a plurality of work tools each of which is connected to a spindle which on rotation varies the position of the work tool, each spindle being driven by a motor (8) having an associated generator (6) for producing pulses (f) indicative of the position of the tool, the system comprising a central processing unit (1) arranged to send pulse signals (m) to a positioning controller (2) which is connected to a servo amplifier (7) via a first switch (A3), the servo amplifier (7) being connectable to a selected one of the motors (8) by a second switch (B4) in order to activate said selected motor to position a work tool, and a third switch (B'5) for connecting the generator (6) associated with said selector motor (8) to the positioning controller (2), the first, second and third switches are activated by signals (a, b), produced by the central processing unit which is arranged so that when the servo amplifier is to be connected to a different motor (8), the unit (1) switches off the pulse signals (m) to the positioning controller and then actuates the first switch (A3) to render it non-conductive and then, after a predetermined length of time, simultaneously activates the second and third switches (B4, B'5) to respectively connect the servo amplifier to said different motor (8) and the generator associated with said different motor to the positioning controller, and then actuates the first switch to render it conductive and finally switches on said pulse signals to the positioning controller. <IMAGE>
Patent GB-2041426-A (GB)
Title: Excavating machines for excavating rock or mineral
IPC: E21D9/10
Filed: 1979-02-09
Abstract: An excavating machine for excavating rock or mineral from a working face to extend an underground roadway or tunnel comprises a floor mounted carriage (1) including a support assembly (3) and a cutter-carrying boom (6) mounted on the support assembly, arcing means (15) being provided for causing movement of the boom such that in use, a cutter (11) mounted on the boom is urged along a curved path around the periphery of the roadway or tunnel. Override means (28, 30, 29, 31) are provided to move the cutter along a substantially linear path to form the roadway or tunnel floor (22). <IMAGE>
Patent GB-2025702-A (GB)
Title: Pole-amplitude modulation, pole- changing electric motors and generators
IPC: H02K3/28
Filed: 1979-05-03
Abstract: In large pole-amplitude modulation, pole-charging electric machines of high pole-numbers, the effect of adjacent harmonics of m.m.f. waveform becomes evident in the form of low- frequency vibration of the frame. In small machines the effect, although present, is less important. The present machines employ stator windings, obtained by a design method using the steps of:     Selecting the pole-combination and stator slot-number, S; Selecting an elemental half-winding slot-number, E, where S must have the factors: 2 x 3 x E, and may have further factors of "2" or "3"; Examining all elemental half- windings in E slots and selecting one with low adjacent harmonics and good balance, this is usually that one with the phase coil-distribution A = (E - 2); B = 1; C = 1;     Symmetrizing the elemental winding into 6E slots; Further symmetrizing, or part- symmetrizing, this derived winding into S slots. The windings disclosed are particularly suitable for large machines in which one of the alternative pole numbers is a multiple of three.
Patent GB-2019869-A (GB)
Title: Process for the manufacture of 1,2-diaminoanthraquinone
IPC: C09B1/22
Filed: 1979-04-26
Abstract: A process for the manufacture of 1,2-diaminoanthraquinone, which comprises reacting 1-nitro-2- acetylaminoanthraquinone with hydrazine or hydroxylamine, or with derivatives thereof, in protic solvents.