baber/WOPTO huggingface dataset:
Patent GB-1357370-A (GB)
Title: Ducted fan gas turbine jet propulsion engine with thrust control  means
IPC: F02K1/28
Filed: 1971-09-24
Abstract: 1357370 Jet propulsion thrust control ROLLS-ROYCE (1971) Ltd 24 Sept 1971 44564/71 Heading B7G A ducted fan gas turbine jet propulsion engine includes a cowl 16 having a closable aperture 26 therein for the radial flow of propulsive fluid, the upstream and downstream edges 30, 32 of the aperture having elongate slots 34, 36 each connected to a supply of pressurized fluid to discharge such fluid over the edges to entrain (by the Coanda effect) fluid passing through the aperture and cause it to flow in the direction of flow of said pressurized fluid. Supply to nozzles 34, 36 causes braking or thrust spoiling respectively. The aperture 26 may be opened by axially moving downstream cowl portion 24, Fig. 2, or by moving a cylindrical fairing (not shown) covering an aperture between two fixed cowl portions; blocker doors 28 are operated at the same time.
Patent GB-1241501-A (GB)
Title: Improvements in or relating to a telemeter including a projector forming a luminous spot on the object the range of which is to be ascertained
IPC: G01S17/32
Filed: 1969-09-12
Abstract: 1,241,501. Photo-electric distance measuring. PAILLARD S.A. 12 Sept., 1969 [24 Sept., 1968], No. 45038/69. Heading H4D. In a range finder generally of the kind described in Specification 1,180,778 the frequency of modulation of the projected light beam from lamp 1 is arranged to increase as range decreases. The object of the invention is to afford a rapid response for small ranges so as to correctly focus a cine camera whilst avoiding hunting when the range is large. In the embodiment photo-conductors 9, 10 (see also Fig. 1, not shown) give rise to an A.C. signal of amplitude corresponding to the departure of the photoconductor assembly from a balance position and of phase, relative to the modulation of the transmitted beam, dependent on the sense of such departure. In one embodiment the modulation is at 20 c/s. for ranges between 5 and 20 metres and at 80 c/s. for ranges below 5 metres (20 metres corresponds in practice to focusing at infinity). The change-over of frequency is effected by a switch (25, Fig. 1, not shown) actuated by a projection on the support of the photo-conductor assembly. In another embodiment the modulation of transmitting lamp 1 is effected by a multivibrator MX the frequency of which depends on the voltage at the collector of transistor T3. When the added outputs from cells 9, 10 is large (corresponding to a nearby target) transistor T2 is rendered more conductive, the voltage drop across resistor R9 is small and the multivibrator gives maximum frequency; and vice-versa. Lamp 1 is an incandescent one which is advantageous in that the modulation depth of the light beam is larger for low modulation frequencies.
Patent GB-1165917-A (GB)
Title: Improvements relating to Apparatus for the Treatment of Combustion Exhaust Gases
Inventor: EANNARINO JOSEPH MICHAEL
IPC: F01N3/38
Filed: 1966-10-08
Abstract: 1,165,917. Treating exhaust gases. TRI-SCIENCES INDUSTRIES Inc. Oct. 8, 1966, No. 45070/66. Heading F1B. In an exhaust gas after-burner wherein air mixed with exhaust gases at a low-pressure region downstream of a restriction 113 is ignited by an igniter 128 downstream of a baffle 126, the entering air supplied by a pump 125 is heated by the combustion products leaving the after-burner. The combustion products flow through annular passages 131, 134, in heat exchange relationship with the air flowing towards the combustion chamber through passage 122. A second igniter 127 is provided upstream of the baffle 126 and the combustion products are guided into passage 131 by a second baffle 129. Crank-case fumes may be admitted through pipe 117. The pump 125 is engine driven and its output is controlled from the accelerator pedal 141. The igniters 127, 128, are cooled by the entering air and are preferably supplied by a Piezo-electric source 143 actuated by a camoperated arm 145 which may be lifted off the cam when not needed either manually or by temperature responsive devices in the afterburner.
Patent GB-1103366-A (GB)
Title: Lockable hub
IPC: F16D11/14
Filed: 1966-10-10
Abstract: 1,103,366. Securing wheel hubs on shafts. WARN MANUFACTURING CO. 10 Oct., 1966 [18 Oct., 1965], No. 45187/66. Heading F2U. [Also in Division B7] A wheel hub 36 may be locked on the end of a front wheel drive-shaft 26 by a push-pull operated hub cap 40 carrying a series of dowel pins 46 engageable in opposed grooves 35, 38 formed in the adjacent cylindrical surfaces of the shaft and hub. The dowels 46 are held in the cap 40 by an interior snap-ring 54 and spring detents 42 are provided for locking the cap in its axial engaged and disengaged positions.
Patent GB-1129891-A (GB)
Title: Improvements in or relating to methods of manufacturing solid state circuits
IPC: H01L27/06
Filed: 1965-10-27
Abstract: 1,129,891. Solid circuits. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. 27 Oct., 1965 [30 Oct., 1964; 19 Dec., 1964], No. 45466/65. Heading H1K. A solid circuit structure comprises a plurality of mutually insulated monocrystalline semiconductor bodies each partially enclosed by a surface layer of low lateral resistance which establishes a connection between a zone on the underside of the body and a contact on the top side. Such a structure may be made by providing an oxide layer and a superposed polycrystalline silicon layer on a face of a monocrystalline N-type silicon wafer carrying an epitaxial layer of high resistivity N or P type, and then reducing the wafer to isolated sections by etching through a mask. A degenerate N- type layer 5 (Fig. 1c) is formed at the surface of each isolated section by diffusion or alloying or by vapour deposition of heavily doped semiconductor material. An insulating oxide layer 6 and polycrystalline support layer 7 are then provided over the isolated sections and the original polycrystalline layer removed. A similar structure may be produced from a wafer with a low resistivity diffused or epitaxial layer at one face by etching intersecting grooves extending through the layer, forming degenerate, insulating oxide, and polycrystalline layers on the grooved face, removing material from the opposite face down to the base of the grooves and reforming the oxide layer on the exposed surface. Another suitable structure is formed from a silicon wafer with a high resistivity epitaxial layer at one face by forming an oxide layer on that face, etching recesses in the opposite wafer face, forming a degenerately doped layer covered with oxide on the recessed face, isolating the section of wafer below each recess by etching from the first face down to the oxide at the edges of the recess and then forming an extension of the degenerate layer on surfaces exposed by the etching (Fig. 4, not shown). In a modification of this, after forming the recesses the material under each recess is isolated by etching the edges of the recess through to the oxide film. The degenerate layer is then formed over the recessed face (Fig. 3b, not shown) and covered with oxide. In each case transistor zone configurations are completed in the isolated sections by planar diffusion techniques. During or before formation of the emitter zone a heavily doped layer 8 (Fig. 1c) joined to the degenerate layer 5 is formed. To lower base resistance the base zone may include a heavily doped annulus around and possibly overlapping the periphery of the emitter zone. In certain cases the necessary zone configurations may be provided in the original wafer before isolation is effected.
Patent GB-969056-A (GB)
Title: Improvements relating to electrical control apparatus
Inventor: BANGA JULIUS
IPC: G05B11/01
Filed: 1961-12-19
Abstract: 969, 056. Automatic temperature control. ELECTROFLO METERS CO. Ltd. Oct. 10, 1962 [Dec. 19, 1961], No. 45481/61. Heading G3R. The control apparatus described in Specification 969, 054 has added to it means for providing proportional and derivative control. This comprises a capacitor 21 which continuously discharges through a network including a second transistor 24, and which is charged whilst the relay 2 is energized through a resistor 8. The resultant volt-drop across this resistor is such that, even with the cadmium sulphide cell 6 fully illuminated, the transistor 15 is on the point of becoming non-conducting. Thus, this will occur as soon as the cell becomes partially obscured; relay 2 then switches off the furnace heater but also opens the charging circuit for capacitor 21. When this has discharged sufficiently the transistor 15 again conducts and thus a cycling action takes place at a frequency proportional to the amount the cell is obscured and hence to furnace temperature. It is shown that, by making the time constant of the discharge circuit roughly equal to that of the movement of the instrument pointer 3, the energy supplied to the furnace is proportional to the rate of change of temperature.
Patent GB-1326648-A (GB)
Title: Hangrod assembly
IPC: F16B9/02
Filed: 1971-10-01
Abstract: 1326648 Garment rails STREATER INDUSTRIES Inc 1 Oct 1971 [2 Oct 1970] 45860/71 Heading A4U In a hangrod assembly, a longitudinally slit hangrod 35 is detachably mounted on adapters 16 each of which is secured by a screw 20 to a wallmounted bracket 10, the hangrod being of steel or plastics and compressible radially for snapengagement of parallel ribs 30, 31 in the adapter in parallel longitudinal grooves 38, 39 in the hangrod. The ribs 30, 31 are formed by assymetric ridges in a cylindrical concave surface 24 of the adapter, which is formed as an aluminium casting, and have an included angle of between 90 degrees and 180 degrees and preferably 115 degrees, and the hangrod when engaged in the adapter is of circular section with a radius equal to that of the surface 24 and the included angle between the grooves the same as that between the ribs. In a modification the ribs are on the rail and the grooves in the adapter.
Patent GB-1278965-A (GB)
Title: Shelf arrangement
Inventor: LASSEN FLEMMING
IPC: A47F11/10
Filed: 1969-09-17
Abstract: 1278965 Illuminated shelves F LASSEN and P LASSEN 17 Sept 1969 [19 Sept 1968] 45897/69 Heading A4H [Also in Division F4] A shelf arrangement comprises a plurality of hollow shelves, each shelf being constructed from two superposed sheets 2 of substantially equal width and having a reflector 3 extending along the forward edge of the upper sheet so that light emitted by a source 1 at the rear edge of the shelf passes through the shelf and is reflected on to objects on the shelf beneath. The inner faces of the sheets may have a light reflective coating, and the reflector 3 may be a prism. The source which may be a fluorescent tube or halogen lamp, preferably illuminates two shelves on opposite sides of a support frame.
Patent GB-1381728-A (GB)
Title: Production of cellulose pulp for paper and paper board
IPC: D21C3/02
Filed: 1971-10-01
Abstract: 1381728 Chemical contact apparatus; digesters J THILLAIMUTHU 27 Sept 1972 [1 Oct 1971] 45918/71 Headings BIF and B1X [Also in Division D2] Apparatus for digesting raw cellulosic materials with an aqueous ammoniacal solution to form pulp and for recovering aqueous ammonia for reuse comprises a digester 1 provided with a steam jacket 2 and stirrer 17, an inlet 5, 6 for supply of raw cellulosic material, inlets 8 12 for supply of water and aqueous ammonia respectively, and inlet 20 for supply of an inert gas, a pipe 14 for removal of ammonia gas on distillation, a condenser 15, ammonia storage vessel 10, and outlets 7, 9 for pulp and liquor respectively. In use, raw cellulosic material may be fed through inlet 5, 6 into the digester, and digested therein with aqueous ammonia under pressure and at an elevated temperature. The aqueous ammonia may be supplied via line 10 from storage vessel 10 by means of pump in water in tank 10. The spent liquors may be released, the residual heat being used to evaporate off ammonia. An anti-foam tower 19 which may contain perforated plates or wire grids may be located between the digester and condenser. Ammonia gas may be withdrawn with the aid of vacuum pump 16, or an ejector (see Fig. 2, not shown), and absorbed in water in tank 10. The spent liquors may be drained via outlet 9 for recovery of chemicals or disposal, and the residual contents of the digester may be blown into pit 18 to be drained prior to pulp beating and washing. The ammonia recovery apparatus may be separate from the digester, rather than combined therewith as shown.
Patent GB-1292725-A (GB)
Title: Process for the preparation of poly(trithiocarbonate)
IPC: C08K5/38
Filed: 1970-09-30
Abstract: 1292725 Poly-(trithiocarbonate) B F GOODRICH CO 30 Sept 1970 [1 Oct 1969] 46461/70 Heading C1A Poly-(trithiocarbonate) is produced from a trithiocarbonate compound, e.g. the acid, alkali metal or alkaline earth salt, by reaction with a halogen in aqueous medium at pH>10. Either reactant may be present in an excess of up to 25%. The preferred salt is that of Na, which may be prepared in situ (e.g. from CS 2  and sodium sulphide); preferred halogens are Cl 2  and Br 2 , which may be added incrementally. Reaction temperature is preferably -15 to 40 C., and 0À5-15 parts of aqueous medium should be used per part of trithiocarbonate. pH is controlled by addition of a base, e.g. alkali metal hydroxide, alkaline earth metal hydroxide or quaternary ammonium hydroxide, and the additions may be made in increments. The reaction medium may contain a surfactant, 0À5-5 gms. being added for each mole of trithiocarbonate.
Patent GB-1492556-A (GB)
Title: Method for fluorescence analysis of white cells
IPC: G01N15/14
Filed: 1974-10-28
Abstract: 1492556 Fluorescence analysis of white blood cells BIOPHYSICS SYSTEMS Inc 28 Oct 1974 [30 Oct 1973] 46470/74 Heading G1B An aqueous liquid composition contains 4À10<SP>-4</SP> to 4À10<SP>-2</SP> gm/l metachromic fluorochrome dye (defined) and has a pH of 6À4-8À4 and an osmolarity of 0.3 to 0.7 times that of normal human blood. The dye may be acridine orange. A buffer may be present. This composition is used to estimate the relative numbers of at least two different types of particles in blood by mixing with a blood sample, irradiating the suspension thus produced, before dye uptake is completed, which causes fluorescence at two or more wavelengths from stained particles, and individually measuring the amounts of fluorescence at each wavelength. One of the particles distinguished may be white cells; the blood is preferably fresh peripheral blood, the irradiation may be with visible light, e.g. blue laser light of 488 mÁ wavelength.
Patent GB-1520298-A (GB)
Title: Process for preparing n-hydrocarbyl terephthalamates
IPC: B01J31/00
Filed: 1975-11-17
Abstract: 1520298 Lubricating greases CHEVRON RESEARCH CO 17 Nov 1975 [3 Dec 1974]47352/75 Heading C5F [Also in Division C2] A metal terephthalamate thickening agent for lubricating greases is prepared by reacting an N- hydrocarbyl-terephthalamate with a metal base; the N-hydrocarbyl-terephthalamate having been prepared by reacting in the liquid phase at from 130 to 460 F., a di-(C 1  to C 4  alkyl)terephthalate and an NC 8  to C 30  acyclic or alicyclic primary or secondary monoamine in the presence of 0À1 to 10% by weight, based on the weight of terphthalate and monoamine, of boric acid.
Patent GB-1245078-A (GB)
Title: Improved synthetic composite filaments and sheet materials obtainable therewith
IPC: D04H1/42
Filed: 1969-09-29
Abstract: 1,245,078. Multi-core composite synthetic filaments. TOROY INDUSTRIES Inc. 29 Sept., 1969 [30 Sept., 1968; 29 Nov., 1968], No. 47707/69. Heading B5B. " Islands-in-a-sea " type of multicore composite synthetic filaments, cross-sections of which have the appearance of a number of islands in a sea comprise a number of polymeric micro-fine filamentary components (" island " components) extending in parallel relationship along the length of the composite filament and having a non-flat cross-section, and a bonding polymeric component (" sea" component) which incorporates the island components into a composite filamentary body. The sea is composed of 90 to 99.5% by weight of polystyrene, a polymer of a styrene derivative or a styrene copolymer and 0À5 to 10% by weight of a polyether selected from the class consisting of polyalkylene glycols and ethers, esters, ether esters, amines and thioethers thereof and mixtures of two or more of these. The proportion of the polyether is preferably 0À5 to 5%. The styrene-type polymer may be polystyrene, polyalpha-methylstyrene, or a halogenated styrene polymer. The polyalkylene glycol may be polyethylene glycol, polypropylene glycol or polybutylene glycol. The derivatives of polyalkylene glycol may include alkyl-phenol ethers, alkyl ethers, alkyl amines, alkyl amides, alkylthioethers, phosphoric esters and their sodium salts and fatty acid amides. The island components of the composite filament are mainly composed of polyesters such as polyethylene terephthalate, polybutylene terephthalate or polyoxyethylene benzoate, polyamides or polyolefins. In an example, polyethylene terephthalate as the island component and a mixture of polystyrene with 0À5% by weight of polyethylene glycol of molecular weight 20,000 as the sea component are simultaneously melt extruded at 285 C. by means of the spinneret assembly of a type adapted for the spinning of " islandsin-a-sea" composite filaments to form composite filaments according to the invention. Both components are melt extruded at the same rate and the filaments are drawn using a pin at 78 C. and a plate at 120 C.
Patent GB-1243632-A (GB)
Title: Improvements in or relating to safety means for elevated walkways
Inventor: SIMPSON HAROLD WILLIAM
IPC: E04G21/32
Filed: 1967-10-20
Abstract: 1,243,632. Safety means. BABCOCK & WILCOX Ltd. 21 Oct., 1968 [20 Oct., 1967], No. 47962/67. Heading A3V. A safety device for an elevated walkway includes a cable 12 anchored so as to extend longitudinally between the two ends of the walkway, with attached or integral eye members 16 held captive on stanchions 30 which are fixed, for example bolted or welded, to the walkway and adapted to cooperate with the eye members 16 to support a load carried by the cable 12 between adjacent eye members, and a safety harness clip 40, round the cable 12 which may be moved into a slit 24 round the stanchion 30 and out through the slit 24 again thus permitting the wearer to move along the length of the cable. The cable which may be a wire rope is fixed above and parallel to the walkway by means of a stretching screw (14) Fig. 1 (not shown) at the end of the jib (10) of a crane with sufficient tension to prevent sag. The eye members 16 are each in the form of a plate 18 welded to a tube 20 through which the wire rope extends clamped at the side by bulldog clips 26. The stanchions 30 are fitted to the structural components of the jib (10) at intervals of about 15 feet and each comprises a cylindrical stub 32, of a width slightly greater than that of the slit 24 of the eye member 16 with an end disc 34. Horizontal grooves 36 in the stub slightly wider than the thickness of the plate of the eye member enable the latter to be fitted on the stanchion and bolted. Harness clip 40 Fig. 4 is a closed metal loop arranged to lie in one plane and bent to form a space 42 with a longtitudinally extending portion 44 and the shorter portion 46 perpendicular to it. In a modification the cable may be formed from eye members connected by lengths of rope. In a further modification the eye members may be clamped by bolts directly to the wire rope.
Patent GB-1106390-A (GB)
Title: Fan impeller
Inventor: DALY BRIAN BOWMAN
IPC: F04D29/28
Filed: 1963-12-05
Abstract: 1,106,390. Moulding impeller hubs. WOODS OF COLCHESTER Ltd. 3 Dec., 1964 [5 Dec., 1963], No. 48171/63. Heading B5A. [Also in Division F1] In a fan impeller having blades adjustable about axes which are at a substantial inclination but not perpendicular to the axis of rotation of the impeller, each blade root tapers towards its end, the minimum included angle of the root being not less than twice the angle of inclination of the root axis to the direction in which a die part used for moulding the corresponding part of the impeller hub would be withdrawn, and the roots are held in corresponding recesses in the hub by screw members arranged axially of the roots. The impeller hub 12, Fig. 1, which is die-moulded from glassfibre reinforced resin has a steel sleeve 13 to engage the impeller shaft 11, and is held in place by a nut 14. Adjustable impeller blades 16 each have a conical root 18 fitting a corresponding recess 19 in the hub, a clamping bolt 22 being cast or moulded into the root. The head 23 of the bolt tapers similarly to the root 18 so that the material of the root is put in radial compression when the nut 21 is tightened, whereby the clamping forces are not added to the centrifugal forces on the root. The semiangle b of taper of the root 18 is made greater than the angle a between the blade axis 17 and the shaft axis 15 so that the innermost boundary 26 of the recess 19 slopes to the left towards the axis 15. Similarly, the semi-angle of taper of a countersink 27 is not less than a. This allows a die part against which the outer face or the inner face of the hub 12 is cast or moulded to be withdrawn in the direction of the axis 15. The hub surface 29 over which the end 28 of the blade 16 sweeps during adjustment is of spherical or other shape to provide a constant clearance. If a multi-part die is used for the outer face of the hub, having one part for each recess 19, the angle b may further be made not less than 90 degrees-a to allow the die parts to be withdrawn radially from the axis 15. The flat washer 24 may be replaced by a conical washer 24a, Fig. 3, fitting the countersink 27a. As shown, the root 18b and the recess 19b may be spherical, the angle between the tangent 26b at the mouth of the recess and the axis 17 being not less than a, in this example equal to b. Similarly, the washer 24a could be spherical., If a bolt similar to the bolt 22 of Fig. 1 is used, its head is shaped to correspond to the spherical shape of the root 18b to put the material of the root in compression. Alternatively, a stud 22a may be moulded into the root; or a bolt may be screwed into the root from inside the hub. The surface of the root or of the recess, or both, may be cut away to restrict the contact between them to three small circumferentially-spaced areas to ensure rigid location of the root. Any moulding flash on the root may be arranged to lie outside these areas so that it need not be removed.
Patent GB-1287179-A (GB)
Title: Rapid development of light-sensitive aluminium plate
IPC: G03C5/29
Filed: 1970-10-09
Abstract: 1287179 Development of a light-sensitive silver halide aluminium plate FUJI PHOTO FILM CO Ltd 9 Oct 1970 [9 Oct 1969] 48172/70 Heading G2C A silver halide developing solution comprises an alkali metal thiosulphate, an alkali metal thiocyanate, a silver halide developing agent, a preservative and an alkali, the molar ratio of the alkali metal thiosulphate to the alkali metal thiocyanate being from 1:1 to 2:1. The solution may contain 1-phenyl-5-mercaptotetrazole and ethylenediamine in a molar ratio of 1:1 to 1:2. The solution may be used to develop a latent image formed on a photo-sensitive element comprising an anodically oxidized aluminium support carrying a photo-sensitive silver halide in the pores of the oxide layer. The aluminium support may contain 0À05-1À0% by weight of copper. Development may be effected in 2 seconds at 15-30‹C.