baber/WOPTO huggingface dataset:
Patent GB-1442849-A (GB)
Title: Knife handle
IPC: B26B5/00
Filed: 1973-11-19
Abstract: 1442849 Knives; handles STANLEY-MABO 19 Nov 1973 [27 Nov 1972] 53561/73 Headings B4B and B4K A knife comprises a handle formed from two shell members 1, 2 defining a blade-receiving cavity, the shell member 2 being provided with a nose portion 4 having an aperture communicating with the cavity and the shell member 1 having an end portion 3 in the aperture to define therein a blade outlet slot. A blade 19 is provided with notches 20, 21 one of which as shown in Fig. 3(A) is adapted to locate with a catch 22 provided on a carriage 14. The carriage is formed with a strip 15 connected to an operating button 5; the strip is formed with arms 16 adapted to engage with notches 17 such that the length of exposed blade may be varied. The catch 22 is formed on a tongue 30 on the carriage such that with the carriage in the position shown in Fig. 3(A) by depressing a button 7 against the tongue, the catch is released from the notch in the blade; the blade can then be removed or its position reversed. When the blade is in any other position the button may then be pressed to engage a rib (24), Fig. 6 (not shown) on the carriage thereby clamping the face of the blade against the outlet slot so as to prevent movement thereof. A pivoted blade holder 12 is provided in the handle and may be opened by releasing a catch 9,10, 11, Fig. 3.
Patent GB-1140179-A (GB)
Title: Lubricant compositions
Inventor: ECKERT RUDOLF JOSEF ALBRECHT
IPC: C08F30/02
Filed: 1967-11-27
Abstract: 1,140,179. Copolymers. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 27 Nov., 1967, No. 53761/67. Heading C3P. [Also in Division C5] Copolymers of one or more olefinically unsaturated aliphatic hydrocarbons, alkyl esters of olefinically unsaturated carboxylic acids and olefinically unsaturated compounds containing a phosphorus atom or a heterocyclic nitrogen atom, may be prepared by copolymerization in the presence of a radical initiator. The monomers may be ethylene, butadiene, isoprene or dimethylbutadiene; methyl, lauryl or stearyl methacrylate, isobutyl acrylate, diethyl maleate, dioctyl fumarate or diisooctyl itaconate; and vinyl phosphonic acid and esters, isopropylidene phosphonic acid and esters, N-vinylpyrrolidone, vinyl pyridines, N-vinyl carbazole, N-vinyl-2-oxazolidone, N-vinyl succinimide, 4- vinyl pyrimidine or 2-vinyl quinoline. Copolymers of constant composition may be obtained by adding reactive monomer(s) to the polymerizing mixture or by polymerization to low conversion. Polymerization may be effected batchwise or continuously, and the products used as lubricant additives. Examples describe the copolymerization in benzene in the presence of azodiisobutyronitrile of (1-4) ethylene, lauryl methacrylate, stearyl methacrylate and N-vinyl-2-pyrrolidone; (5 and 6) ethylene, diisooctyl itaconate and N-vinyl-2-pyrrolidone; (7-10) ethylene, lauryl methacrylate, stearyl methacrylate and 2-vinyl pyridine; (11, 13 and 14) ethylene, lauryl methacrylate, stearyl methacrylate and diethyl isopropylidene phosphonate; and (12 and 15) ethylene, diisooctyl itaconate and diethyl isopropylidene phosphonate.
Patent GB-1211745-A (GB)
Title: Semiconductor switching device
Inventor: MCINTYRE JAMES EDWIN
IPC: H01L29/08
Filed: 1967-11-27
Abstract: 1,211,745. Semi-conductor controlled rectifiers. GENERAL ELECTRIC CO. 27 Nov., 1967 [19 Dec., 19661, No. 53971/67. Heading H1K. In a PNPN switching device one of the outermost zones consists of a main region to which the anode or cathode is ohmically connected and an auxiliary region carrying a non-ohmic gate contactor having an area arranged for exposure to a controllable illumination source, the construction being such that the resistance between the gate contact or area and the anode or cathode is higher than that of any current path of the same length in the main region. This accelerates the spread of current of firing thus reducing the turn on delay and rise times and is achieved either by making the auxiliary region thinner or by isolating it from the main region. Where a thinned region is used may be circular and disposed, preferably centrally, within the main region or segmental or annular and disposed at or near the edge of the main region, or there may be plurality of regions each provided with a gate contact. If the region is annular or segmental it may have a similarly shaped gate contact or a plurality of interconnected contacts. The contact may form a Schottky barrier with the auxiliary region e.g. it may be an aluminium wire ultrasonically bonded thereto, or may consist of an ohmically contacted epitaxial layer forming a PN junction with the region. A typical device is made from a 60 ohm. cm. phosphorus doped N type silicon wafer by diffusing into its faces to form P type layers. Then a gold-antimony foil is alloyed to one face to form an ohmically contacted N type cathode layer, and an aluminium foil attached to a tungsten or molybdenum plate alloyed to the other to form an ohmic anode contact. The thinned region is then formed by etching away part of the goldantimony contact and part of the region beneath it, and an aluminium wire bonded to it ultrasonically. The resulting device can be triggered by a positive pulse on the gate. Alternatively the aluminium wire is bonded to the region prior to thinning so that after etching it is disposed on a mesa. In this case as explained in the Specification in this embodiment triggering can be effected by either a positive or a negative pulse.
Patent GB-1422935-A (GB)
Title: Electric connectors
IPC: H01R4/26
Filed: 1971-11-22
Abstract: 1422935 Terminals BICC Ltd 22 Feb 1973 [22 Nov 1971] 54145/71 Heading H2E A terminal connector for receiving and making electrical connection with the end of a conductor is described. A pressure means forces the conductor towards a space bounded by two metallic suport surfaces having at least two fine ribs upstanding therefrom in a direction at an angle with the conductor axis substantially different from a right angle. A connector block, of extruded brass section is formed of a body 1 having two pear shaped bores 2, 3, which are each provided with two clamping screws 4. An auxiliary bore 6 with pinch screws 7 for receiving a return conductor is provided. In each bore 2, 3, the support surfaces 8, 9 support fine ribs 10, 11 and 12, 13 respectively. Outer face 14 is inclined to the direction of the screw axis at about 40 degrees and the other face at an angle of about 20 degrees. The non-circular bores have major and minor axes of 10 and 9 mm. respectively, ribs 10 and 12 a height of 0À35 mm. and ribs 11 and 13 a height of 0À2 mm.
Patent GB-1367471-A (GB)
Title: Heat exchangers
IPC: F28F3/02
Filed: 1971-11-22
Abstract: 1367471 Heat exchangers D MULOCKBENTLEY & ASSOCIATES (PTY) Ltd 22 Nov 1971 [27 Nov 1970] 54147/71 Heading F4S In a heat exchanger particularly for use in dry cooling towers and comprising a plurality of spaced apart fluid conduits 10 of flattened cross-section extending between headers (12, 14, Fig. 1) with fins 22 interposed between adjacent conduits, the fins 22 are made from metal ribbon 38 which is bent or wound to form a flattened coil, the length of each fin 22 in the direction of air flow through the exchanger being in the range 3 to 6 millimetres. The ratios Cu/L and Cp/L lie respectively in the ranges 0À25 to 2 and 0À5 to 2À2, where Cp and Cn are the distances in millimetres between adjacent fins measured respectively in the direction of air flow and normal to the direction of air flow. The fins are preferably of aerofoil cross-section (see Fig. 4). The roots 40 of the fins are seated between stiffening corrugations (20, Fig. 7) formed in the conduit walls. The assembly of fins and conduits are held together between cheek plates 24 by a series of transverse bolts or studs 26 and nuts 28. The degree of tightening applied to the assembly may be such that an initial convexity (30, Fig. 6) of the conduit walls is fattened out (32, Fig. 6). Compression springs 34 may be interposed between the nuts 28 and the cheek plates. A pliant packing (36, Fig. 5) with good thermal conductivity can be inserted between the fins and the conduits.
Patent GB-1379762-A (GB)
Title: Process for obtaining ammonium sulphate in a rotary reaction chamber
IPC: C01C1/242
Filed: 1971-11-22
Abstract: 1379762 Ammonium sulphate SOC ANON CROS 22 Nov 1971 [20 Nov 1970] 54176/71 Heading C1A Ammonium sulphate is made by reacting 40-60‹ B<SP>1</SP>e H 2 SO 4  directly with ammonia in a rotating reaction vessel on a bed of recycled solid ammonium sulphate at 30-120‹ C., the bed at the outlet of the vessel having pH 5À5-7, and a moisture content between 1 and 10%. The pH is defined as that of a 10% aqueous solution of the bed leaving the vessel outlet. In an embodiment, using an inclined rotary cylinder vessel, aqueous or anhydrous ammonia is introduced, via tubes provided with protective coulters or blades, into the interior of the solids bed at a depth of 100-600 mm. while H 2 SO 4  and/or H 2 O is sprayed over the bed (Specification 1,379,763). The H 2 SO 4  may similarly be introduced below the bed surface. In another embodiment; the reaction vessel is an inclined pan provided with sprays for the acid and/or H 2 O and a nozzle for ammonia below the bed surface. In an example, 100-800 kg./hr. of ammonium sulphate, recycled from drier and fines separator, is fed to a pan-type vessel and is sprayed with 300 kg./hr. of 53‹ B<SP>1</SP>e H 2 SO 4  and 10-70 kg./hr. H 2 O. Ammonia (72 kg./hr.) is injected into the bottom of the solids bed. The product is 275 kg./hr. of ammonium sulphate spheres (1-3 mm. dia.) of N 2  content 20À8- 21%.
Patent GB-1495958-A (GB)
Title: Flame retardant polycarbonate composition
IPC: C08L69/00
Filed: 1974-12-16
Abstract: 1495958 Flame-retardant polycarbonate compositions GENERAL ELECTRIC CO 16 Dec 1974 [28 Dec 1973] 54247/74 Heading C3R A flame-retardant composition comprises a polycarbonate and an alkali metal or alkaline earth metal salt of a sulphonic acid wherein the sulphonate group is bonded to a C 1-10  alkyl, cycloalkyl, olefinic or cycloolefinic radical. The salt is preferably present in an amount of from 0À01 to 10 weight per cent based on the polycarbonate. Many salts are specified, e.g. sodium 2,3,4,5,6 - pentachloro - # - styrene sulphonate, sodium trichlorovinylsulphonate and sodium 2,4-dichlorotoluene-α-sulphonate.
Patent GB-1220860-A (GB)
Title: Activation of low temperature shift catalysts
Inventor: REITMEIER RONALD EVERETT
IPC: B01J23/80
Filed: 1968-11-19
Abstract: 1,220,860. Shift reaction catalysts. CATALYSTS & CHEMICALS Inc. 19 Nov., 1968, No. 54731/68. Addition to 1,082,298. Heading B1E. Activation of a catalyst precursor consisting of ZuO and CuO for use in a shift reaction operated below 700‹F, the Zu:Cu ratio being 0.5-3:1, is effected by subjecting it to a gas stream containing a reducing gas and a diluent selected from N 2 , CH 4 , C 2 H 6 , C 3 H 8  and CO 2  such that the heat evolved maintains the catalyst temperature within the range 300- 500‹F.
Patent GB-1292457-A (GB)
Title: Feedback control system
IPC: G05D16/20
Filed: 1969-11-10
Abstract: 1292457 Automatic control ARMOUR & CO 10 Nov 1969 [12 Nov 1968] 54867/69 Heading G3R Deviation of a variable outside a desired range of values in one sense causes energization of a plurality of controllers to apply incremental corrections in succession at intervals until the variable is restored within the range, deviation outside the range in the opposite sense being corrected by successive de-energization of the controllers. In Fig.1, five ammonia compressors A-E, each having four stages 1-4, operate in cascade. The high initial suction pressure closes a switch to operate a timer in a unit 18 to generate increase demand pulses at one minute intervals which are transmitted over a line 19 to operate delayed relays causing the compressors to start up and unloading valves of the compressor stages to be de-energized in succession until the suction pressure falls below a predetermined range. Operation of the relay of each stage completes the control and power supply circuits for the relay of the next stage. When the suction pressure has fallen below the predetermined range it closes a switch to operate a second timer in unit 18 to generate decrease demand pulses at five minute intervals which are transmitted over a line 20 to stop compressors and energize unloading valves of the compressor stages in succession until the pressure rises above the predetermined range. The next reduction of pressure is then effected by a five minute timer instead of the one minute timer which is used only for the initial reduction. Switches are provided to select the number of stages which are to be automatically controlled and other switches permit stages to be rendered operative manually. Relays in a unit 21 disable the system and/or operate indicators or alarms upon power supply failure, low compressor coolant pressure, high level in the accumulator, high condenser pressure or extra high or low suction pressure. Use of solid state switches is referred to.
Patent GB-1446469-A (GB)
Title: Carburettor idle system
IPC: F02M3/08
Filed: 1973-11-27
Abstract: 1446469 Spray carburetters FORD MOTOR CO Ltd 27 Nov 1973 54890/73 Heading F1B Idling mixture from a nozzle 16 which projects into the induction passage 11 and in the idling position of the throttle valve 13 is in a slot in the periphery of the valve is discharged into the gap between the nozzle and the walls of the slot during idle operation. The gap is of such a size that during idle operation the flow therethrough is at sonic velocity. The nozzle 16 contains a calibrated restrictor 22 and an adjustable metering needle 23. The carburetter is of the fixed jet single Venturi type.
Patent GB-1279545-A (GB)
Title: Nickel-molybdenum bonded titanium nitride-titanium carbide
IPC: C22C29/16
Filed: 1970-11-20
Abstract: 1279545 Hot pressed TiC-TiN-NiMo E I DU PONT DE NEMOURS & CO 20 Nov 1970 [21 Nov 1969] 55288/70 Headings C7A and C7D A composition comprising in percent vol. 49.5-94 TiN, 5-49.5 TiC and 1-15 of a mixture consisting of 20-50 Ni and 50-80 Mo having a density >99% theoretical and an average grain size <2 microns is made by hot pressing the powder mixture at 1650-1900 C. and 1000- 5000 p.s.i. and then quenching. The ratio by volume of TiC:Ni-Mo mixture should not exceed 1:1, the TiC and TiN should have particle sizes <1 micron and the Ni-Mo mixture <10 microns. The powder mixture is wet milled at 90 r.p.m. for 5 days and after vacuum drying is stored under N 2 . The powder is charged into a graphite die under N 2  and vacuum hot pressed. The compact is cooled to a dull red heat in about 5 minutes to produce a Rockwell A hardness of 92-94 and a transverse rupture strength of 200, 000-325, 000 p.s.i. The compacts are suitable for use as wear and corrosion resistant parts, metal cutting tools and jewellery such as watch cases.
Patent GB-1200537-A (GB)
Title: Polymerization process
IPC: C08F36/04
Filed: 1968-11-26
Abstract: 1,200,537. Diolefin polymerization. GOODYEAR TIRE & RUBBER CO. 26 Nov., 1968 [29 Dee., 1967], No. 55973/68. Heading C3P. Conjugated diolefins are solution polymerized using a catalyst comprising (1) an alkyl aluminium or alkyl aluminium hydride, (2) a metal organic compound, the metal being a member of Group IIIs of the Periodic System, and (3) an organoaluminium fluoride. The atomic ratio of fluorine to Group IIIB metal in the metal organic compound is in the range 15: 1 to 80: 1. Catalyst component (2) is suitably cerium octanoate. In the examples isoprene or butadiene are polymerized in organic solvent to polymers of a high cis 1,4 content using catalysts comprising (a) cerium octanoate, (b) diethylaluminium fluoride and (c) triisobutyl aluminium, diisobutylaluminium hydride, tri-n-hexylaluminium, tri-isohexylaluminium or tri-n-butylaluminium. The polymerizations were deactivated by the addition of a suitable stopping agent and an antioxidant.
Patent GB-1176479-A (GB)
Title: Leather Dressing
Inventor: KOLB GUNTER
IPC: C14C11/00
Filed: 1966-12-15
Abstract: 1,176,479. Coated laether. FARBENFABRIKEN BAYER A.G. 15 Dec., 1966 [28 Dec., 1965], No. 56188/66. Heading B2E. [Also in Divisions C3 and C6] Leather is coated with an a queous dispersion of a copolymer, which contains-recurring in each molecule-the group: -CO-NHCH 2 -NH-COOR 2  in which R 2  is an alkyl radical having, for example, I to 4 carbon atoms, or a cycloalkyl, aralkyl or aryl, e.g. phenyl, radical. A suitable copolymer may be obtained by polymerizing the following components:- (a) at least one compound having the general formula: in which R 1  is hydrogen; alkyl, e.g. methyl, cycloalkyl, aralkyl or aryl (b) at least one elasticizing monomer consisting of a conjugated 1,3-di-olefine having 4 to 6 carbon atoms per molecule, or an ester of acrylic acid having 1 to 20 carbon atoms in the ester radical, or an ester of methacrylic acid having 4 to 20 carbon atoms in the ester group; and optionally, (c) at least one other monomer which can be subjected to radical copolymerization, e.g. selected from: styrene, acrylonitrile, acrylic acid, methacrylic acid, vinyl acetate, methyl methacrylate, acrylamide, and methacrylamide. The amount of component (a) may be between 0.1 and 10.0 percent, based on the weight of copolymer, the amount of component (b) between 70.00 and 99.9 percent, and the amount of component (c) (excepting acrylamide and methacrylamide which individually should not exceed 5 percent, may be up to 29.9 percent. Suitable components (a) (b) and (c) are specified. The leather may be smoothed, by abrasion, before and after it is dressed. The aqueous dispersion may be applied to the leather by brushes, or by spraying, airlessspraying or cast-coating devices.
Patent GB-1291335-A (GB)
Title: Recovery of ditrimethylolpropane
IPC: C07C43/13
Filed: 1970-11-26
Abstract: 1291335 Purification of ditrimethylolpropane KOEI CHEMICAL CO Ltd 26 Nov 1970 [29 Nov 1969] 56333/70 Heading C2C Ditrimethylolpropane is recovered from the bottom residues, obtained in the production of trimethylolpropane from n-butyraldehyde and formaldehyde in the presence of an alkaline catalyst, by steam distillation with superheated steam under a reduced pressure and obtaining ditrimethylolpropane from the distillate.
Patent GB-1163170-A (GB)
Title: Improvements in or relating to Combustion Installations operating with Pulsating Combustion
IPC: F23C15/00
Filed: 1967-12-13
Abstract: 1,163,170. Mixing in conduits. JUNKERS & CO. G.m.b.H. 13 Dec., 1967 [24 Dec., 1966], No. 56575/67. Heading B1C. [Also in Division Fl] A device for mixing gaseous fuel with air flowing to a pulsating type combustion chamber 11 comprises a sleeve 30 mounted within an extension 27 of 'the air pipe 19 to form an annular space 31 connected to the fuel supply pipe 24 and closed at one end so that fuel entering the space flows through an outlet orifice 33 to mix with the air flowing through the interior of the sleeve 30. Mixing is assisted by partitions having bent ends 321 within annular space 31 and by a helical swirl vane 35 within the sleeve 30 which respectively swirl the fuel and air in the same direction but with different velocities. A central hemispherical member 36 at the air entry to sleeve 30 causes the airflow to have a hollow core and also reduces the backflow of combustion gases from combustion chamber 11.
Patent GB-1202729-A (GB)
Title: Trigger mechanism for automatic firearms
IPC: F41A19/46
Filed: 1967-12-15
Abstract: 1,202,729. Automatic weapon trigger mechanism. HECKLER & KOCH G.m.b.H. 15 Dec., 1967 [20 Dec., 1966], No. 57066/67. Heading F3C. A trigger mechanism for an automatic firearm disposed in a trigger box 1 and having a lever 21 for catching and holding the breech block (not shown) in a rearmost position and a trigger 10 having an associated part 29 for displacing the catch lever from its position where it projects into the path of the breech block, is characterized by the provision, on the same pivot 9 as the trigger 10, of a plate 31 which is rotatable relatively to the trigger and is provided with two sectors 32, 33 of different radii separated by a steep flank, the catch lever 21 having a hook shaped lug 25 which engages the larger radius sector 32 when the trigger is pulled and which drops on to the smaller radius sector 33 when the trigger is released. The plate is biased by a spring 34 to rotate clockwise as shown in the Figure, where the trigger is in the released position. When the trigger 10 is pulled, lug 29 engages lever 21 and rotates it to withdraw its end 23 from the breech block, the hook 25 moving away from plate 31 which is then rotated by its spring to place sector 32 behind the hook to prevent the lever moving back into a block engaging position. When the trigger is released its pin and slot connection 35, 36 with the plate delays the return movement of the latter until near the end of the trigger release movement when the plate rotates allowing the hook to snap on to sector 33 and present its end 23 to engage the block. The device is shown in a firing mechanism having a hammer 2 provided with bents 8, 18 engaging respectively a trigger sear 7 and a part 17 which is withdrawn from its bent by the action of a lever 19 operated by the forward movement of the breech block. The hammer 2 is provided with a device 41 pivoted thereto which moves the hammer further, when the device is contacted by the breech block on hand cocking, than would otherwise be the case. In automatic firing this further movement is achieved by the inertia of the hammer, the bent 8 and sear 7 being arranged to reengage only after this further movement, to prevent hammer being caught by trigger lever 6 when the trigger is released with the breech advancing. This prevents a cartridge being introduced into a heated barrel without being fired.
Patent GB-1403590-A (GB)
Title: Paving block or slab
IPC: E01C5/06
Filed: 1972-12-14
Abstract: 1403590 Paving blocks L MOGICA 14 Dec 1972 [20 Dec 1971] 57667/72 Heading E1B Interengaging concrete paving blocks have an upper wear surface portion P 1  and a lower base portion P each bounded by alternate convex A-A and C-C and concave B-B and D-D surfaces, the convex surfaces being inscribed in concentric circles, and said surfaces preferably having complementary generating lines. The upper wear and lower base portions are preferably interconnected by convex and concave conic surfaces having the same angle of inclination α. The bounding surfaces of the upper and lower portions may be conic or tonic provided they have complementary generating lines and identical radii.
Patent GB-1165150-A (GB)
Title: Improvements in or relating to devices in which a Rotating Body can be urged into Contact with a Valve Plate containing Two Passages which Conduct Fluid at Mutually Different Pressures
IPC: F01B3/00
Filed: 1966-12-29
Abstract: 1,165,150. Reciprocating pumps. LINDE A.G. Dec. 29, 1966 [Dec. 31, 1965], No. 58111/66. Addition to F1A. A cylinder block 3 engages a control valve plate 2 and the pressure exerted by the block on the plate is controlled by applying pressure to chambers 12, 15, 18 so that the pressure is applied to steps formed on the shaft 4 in which the block rotates and which engages the outer end face of the block through a thrust bearing 6. The pressure to the chamber 18 is controlled by a valve 20 which opens at a preset pressure in the duct 17. The chamber 18 may also be connected through a similar valve to the duct 14 or the two valves may be inter-connected to selectively connect one or other duct to the chamber or the chamber to a discharge line. The Specification also states that the valve may be sensitive to the speed of rotation.