baber/WOPTO huggingface dataset:
Patent GB-1525260-A (GB)
Title: Range measurement apparatus and methods of measuring rang
IPC: G01S13/10
Filed: 1975-11-28
Abstract: 1525260 Range measurement; analogue-to-digital conversion SPERRY RAND CORP 28 Nov 1975 [23 Dec 1974] 48981/75 Headings H4D and H3H The range of an object is measured by (a) generating a first short pulse after a delay, from the instant of transmission of a pulse to the object, corresponding to a plurality of equal "coarse" range increments, (b) generating a second short pulse in response to reception of an echo from the object, (c) bringing the two short pulses into time coincidence in a tapped delay line which establishes a plurality of "fine" range increments together totalling one "coarse" range increment, and (d) determining in which one of the "fine" increments the coincidence occurs. In the radar system of Figs. 3a and 3b, whose waveforms are shown in Fig. 5, clock pulses at the radar p.r.f. (fed in at 80) trigger burst control generator 31 to give waveform D which in turn triggers a monostable 37 to give waveform E. A vernier range oscillator 32 is enabled for the period of a burst control pulse D, but its output comb wave F is clamped at low level by diode 36 during the low level of waveform E. The periods of comb wave F define the "coarse" range increments. The F signal is differentiated at 34, 35, to give waveform G. The first high pulse in G (after E has gone high) triggers a short pulse I from generator 60, for application to one end of a transmission line having taps 6 along it. The line length corresponds to one coarse range increment and the tap spacing corresponds to one fine range increment. A target echo pulse received at 90 triggers a second short pulse from generator 70, for application to the other end of the line. Coincidence detectors 42 detect at which tap the two short pulses coalesce. If coincidence is detected at a particular tap in each of four consecutive radar repetition periods, as determined by an associated counter 41, the associated fine range indicator lamp 44 is lit and a system lock-up signal is generated at 50. If such repeated coincidence is not detected, the delay provided by generator 37 is automatically changed by one coarse range increment at a time until such detection occurs and the system locks up. This automatic change is effected as follows. In the absence of a lock-up signal, a two-stage counter within unit 10 is clocked at the radar p.r.f. via OR gate 30. The count is decoded by one-of-ten decoder 21. The decoder outputs enable transistor gates 24 one at a time in turn, thus connecting resistors R1-R10 sequentially into the timeconstant determining circuitry of delay generator 37. Lamps 22 indicate the particular coarse range increment associated with the delay thus selected.
Patent GB-1451700-A (GB)
Title: Root crop harvesting machines
IPC: A01D27/04
Filed: 1974-11-13
Abstract: 1451700 Two row root crop harvester COMHLUCHT SIUICRE EIREANN TEORANTA 13 Nov 1974 [15 Nov 1973] 49141/74 Heading A1F A root crop harvester as described in Specification No 1439439 has two pairs of cooperating belts 22, 23 and two pairs of topping discs, the tops being deposited by a roller 19 into a foliage bin 20 from where they are deposited onto the ground by an auger in the bin 20.
Patent GB-1321688-A (GB)
Title: Phonograph pickup
IPC: H04R11/08
Filed: 1970-10-16
Abstract: 1321688 Gramophone pick-ups J GRADO 16 Oct 1970 [3 Nov 1969] 49179/70 Heading H4J A variable reluctance pick-up has at least two operating and two working gaps in which an armature moves in response to movement of a stylus. Two series-connected coils are mounted one on each of two polepieces. Compensating gaps, one for each working gap and operating gap, reduce hum which would otherwise be produced by stray fields. A stereophonic pick-up (Figs. 1, 4) has a permanent magnet 28 connecting front and rear plates 26, 24 of magnetic material. Four polepieces 16, 18, 20, (22, not shown) each carry a coil 17, 19 (21, 23) and are secured in the rear plate 24 by non-ferrous sleeves 72 which provide the compensating gaps. The gaps between the confronting faces of the front plate 26 and the front faces F<SP>1</SP> of the polepieces 16, 18, 20, 22 constitute the operating gaps. A removable stylus lever-armature assembly 52 includes a non-magnetic carrier 54 in which are extensions 16a, 18a, 20a (22a) of the polepieces. The front faces F of the extensions 16a, 18a, 20a, (22a) are spaced from the front plate 26 to define four working gaps. A stylus lever 32 is anchored by a flexible shaft 62 on a base member 60 secured to carrier 54. An elastomeric damper 66 is compressed between the base member 60 and a conical support 36 of non-magnetic material. The support 36 carries a toroidal armature 38 of angled cross-section. In its neutral position one face 38b of the armature 38 is parallel with the faces F. The assembly 52 is retained with the help of a resilient washer 40. A ferrous cylinder 42 may surround the coils 17, 19 (21, 23) to further assist in reducing hum.
Patent GB-491943-A (GB)
Abstract: 491,943. Range-finders &c. ZEISS, C., [Firm of]. Dec. 7, 1936, No. 33464. Void. Convention date, Dec. 10, 1935. [Class 97 (i)] A device for directing to a moving target an optical instrument such as a range-finder which is so mounted on a support as to be rotatable vertically and horizontally comprises a bow to receive one of the observer's shoulders and a holder which is connected to the bow and can be fixed to the instrument. As shown the bow is in two resiliently-connected parts a, b the part a having a stem c in which is adjustably mounted a rod d carrying a clamping ring to be fixed to the instrument, the ring comprising parts e, f which can be screwed together. The device acts as a substitute for the hands for displacing the instrument about the axes of freedom provided by its support.
Patent GB-1109917-A (GB)
Title: Bituminous emulsions and their preparation
Inventor: REDMAN JOHN WILSON
IPC: C12N1/26
Filed: 1965-11-19
Abstract: Aqueous bitumen emulsions comprise an alkali-hydrolysed dried yeast as emulsifier.  Specified bitumens are crude petroleum distillation residues, tars and pitches e.g. derived from coal, and may contain fatty acids.  Emulsifiers may be prepared by hydrolysing yeast of Candida sp. with NaOH or KOH at at least 40 DEG C.  The emulsions may be prepared by adding molten bitumen e.g. at 100-110 DEG C to the hydrolysis mixture at 90-100 DEG C.  A comparative example refers to hydrolysed casein in place of the hydrolysed yeast.
Patent GB-1445468-A (GB)
Title: Seat cushions and methods for their manufacture
IPC: A47C7/28
Filed: 1973-10-23
Abstract: 1445468 Seat cushions ETABS BERTRAND FAURE 23 Oct 1973 [24 Oct 1972 1 March 1973] 49297/73 Heading A4M [Also in Division B5] A seat cushion comprises a block of resilient foam 8 covered on its top or support surface by a wear resistant facing sheet 6, e.g. of cloth, velvet or leather, bonded to the block 8 during its moulding, the layer 6 having edges 19 extending beyond the periphery of the block 8, and a skirt 9 or 25 for covering the sides of the block 8, the skirt being secured to the edges 19 subsequent to the moulding of the block 8 along a join line 10 or 24 which is hidden by turning back the skirt. In one embodiment, Fig. 3, the skirt 9 comprises a strip, e.g. of PVC, the lower edge of which is secured either, as at 29, to the block 8 or to a support for the cushion. In another embodiment, Fig. 6 for use as a backrest the skirt is formed by a sheet 25 secured on three sides to the edges 19. When the assembly as shown in Fig. 6 is turned inside out to its condition of use the sheet 25 covers the sides and back of the block 8 and forms a pocket to receive the backrest frame of a seat.
Patent GB-1122833-A (GB)
Title: Reinforced mica paper tape
IPC: B32B27/00
Filed: 1965-11-22
Abstract: 1,122,833. Laminates. SOC. GENERALE DE CONSTRUCTIONS ELECTRIQUE ET MECANIQUES (ALSTHOM). 22 Nov., 1965 [27 Nov., 1964], No. 49448/65. Heading B5N. A method of making a flexible mica paper tape reinforced by a backing is characterized that, as bonding between the backing and the mica paper, two different resins of the epoxide class are used, one of which, unsuitable for diffusion, is used with a hardener of the acid type to give a previous coating to the backing, and the other, used without hardener, is partially diffused into the mica paper and agglomerates with the first resin. Specified backings are silicone glass fabric, polyethylene terephthalate fabric, polyethylene terephthalate film, felts of polyethylene terephthalate, asbestos or glass, optionally reinforced by glass fibre threads and polyamide or polyimide fabric, film or felt.
Patent GB-1090119-A (GB)
Title: Improvements in or relating to self-aligning bearing units
IPC: F16C33/74
Filed: 1964-12-04
Abstract: 1,090,119. Bearings. SPYRA FLO Inc. Dec. 4, 1964 [May 27; 1964], No. 49470/64. Heading F2A.  A self-aligning bearing unit 10 for a rotatable shaft (not shown) includes a bearing bush 12, having bore 18 wherein said shaft can be lodged, and part-spherical surfaces 21, 22 that engage with annular seats 77, 32 defined by a resilient washer 74, which has a V-shaped profile in cross-section and a flange 30 at the base of a tubular portion 24 of a housing, or socalled retainer, 14, for the bush, respectively, the washer being in abutment with a ring 26 constituting a part of said housing. The bush 12 may be made of porous material, e.g. sintered bronze, that may be impregnated with a lubricant, e.g. oil. A space 70 between the bush and the housing is filled with a wicking material 72, e.g. cellulose fibre, which is impregnated with oil and is stated to have the appearance of an aggregation of crumbs. The portion 24 of the housing is made of a relatively soft material, e.g. die-cast zinc, whereas the ring 26 is made of a harder material, e.g. carbon steel, so that the ring can be pressed into the upper end of said portion by a ram (100), Fig. 4 not shown), while the said portion is supported by an anvil (94, 95), a proportion of the soft material being forced into an annular groove (90) in the ring during the pressing operation. A flange 82 on the ring 26 has a knurled edge and defines with the portion 24 an annular groove (115), Fig. 6 (not shown), whereby the bearing unit can be pressed into an aperture (122), Fig. 7 (not shown), in a supporting plate 16 by a ram (130) while the plate 16 is supported by an anvil (120). .  In a first modification. Fig. 8 (not shown), the washer 74 is replaced by a flat washer (274), which is slit radially to form flexible fingers (279) that are bent by abutment with the ring (226) at the top of the housing to form a seat for the bearing bush. In a second modification, Fig. 9 (not shown), the seat 77 is defined by the ring (326) at the top of the housing and the seat 32 is defined by a washer (374) lodged in the bottom of the housing, which washer is similar to the washer 74 and is inverted. In a third modification, Fig. 10 (not shown), the ring 26 is replaced by a flexible ring (426) that is shaped to form the seat 77 in a manner similar to the washer 74, the ring being attached to the tubular portion (424) of the housing by axial projections (451) thereon engaging with holes in the ring, which projections are peened at their ends. In a fourth modification. Figs. 11 and 12 (not shown), the washer 74 is replaced by a ring (574) made of plastics material, e.g. nylon, that is deformed by the ring (526) at the top of the housing so as to provide a seat (677) for the upper end-of the bearing bush.
Patent GB-1047768-A (GB)
Title: A method of copolymerising maleic anhydride with olefins
IPC: C08F22/04
Filed: 1963-12-17
Abstract: Copolymers of maleic anhydride and a C2- 4 olefine are prepared by copolymerizing the monomers at a superatmospheric pressure and at a temperature of 50-80 DEG  C. in an inert organic solvent and in the presence of a polymerization initiator comprising an organic redox system comprising an organic peroxide and either a sulphinic acid or a chelate compound containing a central atom of variable valency. The olefine may be propylene or isobutylene.  The peroxide may be benzoyl, 4,41-tetrachlorobenzoyl, methylethyl-ketone or cyclohexanone peroxides. The sulphinic acid may be p-toluene-sulphinic acid and the chelate compound may be ferrous acetyl-acetonate.  The organic solvent may be an aromatic hydrocarbon, e.g. benzene, or an aliphatic ether.
Patent GB-1153277-A (GB)
Title: Improvements in and relating to Kilns
IPC: A61C13/20
Filed: 1966-11-08
Abstract: 1,153,277. Dental furnaces. ZAHNFABRIK, WIENAND SOHNE & CO. G.m.b.H. 8 Nov., 1966 [8 Nov., 1965], No. 50012/66. Heading F4B. [Also in Division H5] The firing chamber of a vacuum kiln comprises an evacuated bell 6 containing a heating coil 11 and enclosed by a rectangular housing 3 containing insulating material 4 and forming a preheating and drying chamber 12 which is heated only by heat loss from the firing chamber. Ceramic dental products 10, to be fired, are carried by a plate 7 on a stem 8 which can be raised and lowered to provide access. The plate 7 forms a seal with bell 6 and stem 8 is hollow and connects the bell to a vacuum pump.
Patent GB-1286006-A (GB)
Title: Oxychlorination process
IPC: C07C67/00
Filed: 1969-11-28
Abstract: 1286006 Oxychlorination STAUFFER CHEMICAL CO 28 Nov 1969 [19 Dec 1968] 50093/71 Divided out of 1286005 Heading C2C The invention comprises an improvement in a process for the oxychlorination of hydrocarbons in a reaction zone containing a copper catalyst maintained under Oxychlorination reaction conditions wherein the gaseous feed mixture to the zone comprises a hydrocarbon having 1-4 carbon atoms, a chlorinating agent selected from hydrogen chloride, chlorine or mixtures thereof and an oxygen-containing gas, the improvement comprising maintaining the gaseous feed mixture at a sulphur content of less than 1000 parts per million sulphur.
Patent GB-1394994-A (GB)
Title: Watthour meters
IPC: G01R21/133
Filed: 1971-06-18
Abstract: 1394994 Measuring power FERRANTI Ltd 7 June 1972 [18 June 1971] 50460/74 Divided out of 1394993 Heading G1U A watthour meter has a multiplier to derive a D.C. voltage from the instantaneous values of alternating current and voltage in a circuit and a converter comprising means for applying the D.C. voltage direct and with reversed polarity alternately under the control of a switching signal to an integrator, the output of which is connected to a circuit having two thresholds and which produces the switching signal. The switching signal pulses are directed to one of two counters depending on the direction of flow of the power input. A voltage proportional to the A.C. voltage is generated at 111 and fed to multiplier 114. Antiphase voltages proportional to current are generated in centre tapped transformer 112 and fed via switches 12, 14 to the multiplier 114. The multiplier output is passed to integrator 17 which is connected to two threshold circuit 21 and the output square wave switching signal operates relay 44; the output pulse train being derived from relay contacts 45. Switching signal e is fed back via exclusive OR gate 117 to phase splitter 43 which opens one of gates 12 or 14 so that the voltage applied to the integrator charges polarity regularly generating alternate up and down ramps. Relay 61 is actuated by one state of bistable 116 and directs pulses from relay 45 to one of two counters corresponding to power input and output.  When the direction of power flow changes signal c and e become equal. Bistable 116 is switched to its other state, phase splitter 43 switches to the other of the inputs so that c and e become unequal and relay 61 is switched to its other state so that the pulses are directed to the other counter. In alternative embodiment, 111 and 112 may respond to current and voltage respectively and relays may be used instead of gates 115, 117.
Patent GB-1073730-A (GB)
Title: Radial bogie for a rail vehicle
Inventor: WAYLAND STANLEY ALBERT
IPC: B61F5/30
Filed: 1964-12-14
Abstract: 1,073,730. Radial bogie. SCHWEIZERISCHE LOKOMOTIV- & MASCHINENFABRIK. Dec. 14, 1964, No. 50867/64. Heading B7L. In a radial bogie-having an axle 1 with an imaginary pivot point. O, rubber members 17 are arranged between flat guide surfaces 13 and 14 of the axle box 5 and flat guide surfaces 15 and 16 of the bearing yoke 6, these surfaces being normal to a vertical plane passing through the pivot point. In Fig. 3, the rubber members are located each side of the central transverse plane of the axle bearing and in Fig. 4'they are located on this plane. The yoke (6), Fig. 1 (not shown), transmits the weight of the vehicle body to the axle box via springs (4), and is guided vertically on pins (8) of the bogie frame (3) in guide bushings (10), Lateral deflection of the axle causes restoring members (20), Fig. 2 (not shown), located between the yoke and the axle box to provide an opposite force on the axle by the compression of springs (23).
Patent GB-1212776-A (GB)
Title: Improvements in or relating to polyamides
Inventor: SCHNEIDER JOHANNES
IPC: C08G69/26
Filed: 1968-10-25
Abstract: 1,212,776. Polyamides. DYNAMIT NOBEL A.G. 25 Oct., 1968 [28 Oct., 1967], No. 50877/68. Heading C3R. Moulding compositions comprise polyamides, having a viscosity number of 120-180 prepared from a methyl terephthalate and 2,2,4- and/or 2,4,4-trimethyl hexamethylene diamine. The viscosity number is measured using a 0À5% by wt. solution of the polymer in m-cresol at 25‹ C. in accordance with DIN 53727. The compositions may also contain heat and light stabilizers, fillers and dyes. Moulding may take place at 250-320‹ C. The polyamides may be prepared as described in Specification 1,049,987.
Patent GB-1126698-A (GB)
Title: Interactions between waves and electrons
IPC: H01J25/16
Filed: 1965-12-01
Abstract: 1,126,698. Aerials. R. E. CLAPP. 1 Dec., 1965 [19 Jan., 1965], No. 51016/65. Heading H4A. [Also in Division H1] An omni-directional aerial comprises a stack 40 of annular waveguides. Each guide consists of a disc of solid dielectric material separated from its neighbours by conductive discs. The discs have electrical lengths in the radial direction which alternate between two values differing by a number of half-wavelengths. The difference is obtained by using two dielectrics, e.g. aluminium oxide and boron nitride, whose refractive indices n 1 , n 2  are in the required ratio. The phase difference results in the production of a standing wave at the centre of the stack and the central space may accommodate the drift tube 43 of an accelerator for electrons or other particles. The Specification also describes stacks of rectangular waveguides using the same principle. These may have directional properties when used as aerials.
Patent GB-1529908-A (GB)
Title: Colour photographic silver halide material containing a bisphenol
IPC: G03C1/06
Filed: 1976-12-08
Abstract: 1529908 Photographic silver halide material containing a bisphenol and a magenta coupler KONISHIROKU PHOTO INDUSTRY CO Ltd 8 Dec 1976 [12 Dec 1975] 51094/76 Heading G2C A photo-sensitive silver halide material comprises a support bearing a layer containing a magenta coupler having a 3-anilino-5-pyrazolone nucleus, the material comprising at least one bisphenol of the Formula:- where R 1 , R 2 , R 3  and R 4  are each 1-18C alkyl, the total number of C atoms in R 1 , R 2 , R 3  and R 4  being up to 32; X is a single bond, O, S, SO 2  or -(CHR 5 ) n -; R 5  is H or 1-10 C alkyl; and n is 1, 2 or 3, and when n is 2 or 3, the groups R 5  can be the same or different. The magenta coupler preferably has the Formula:- where X is halogen, OH, CN, NO 2 , amido, diacylamino, N-substituted amino or optionally substituted alkyl, aryl, alkoxy or aryloxy; Y is optionally substituted aryl or a 5- or 6-membered heterocyclic ring; W is a hydrophobic ballast group; V is H or a group defined for X or W; and Z is H or a split-off group. In a diffusion transfer material the bisphenol is preferably present in the imagereceiving element. Magenta dye images having excellent light resistance without yellow stain can be produced using this material.
Patent GB-1416680-A (GB)
Title: Moulding of electric battery containers with bowed end walls
IPC: H01M50/114
Filed: 1971-11-08
Abstract: 1416680 Moulding battery containers CHLORIDE LORIVAL Ltd 5 Feb 1973 [8 Nov 1971] 51850/71 Heading B5A [Also in Division H1] The container of an electric storage battery is moulded (e.g. injection moulded in polypropylene) with parallel partition walls but outwardly convex end walls to avoid the ends of the container becoming concave on cooling. The base of the container may be rectangular, the conversity in horizontal section developing to a maximum at the top. The ends may be convex in vertical section also.
Patent GB-1459887-A (GB)
Title: Variable venturi carburettor
IPC: F02M9/10
Filed: 1974-11-29
Abstract: 1459887 Spray carburetters FORD MOTOR CO Ltd 29 Nov 1974 [3 Dec 1973] 51918/74 Heading F1H In a carburetter having at least one wall portion 12 movable relative to a stationary portion 14 to vary the area of the Venturi 10, crushable seal means 56, e.g. of thin sheet-metal honeycomb construction, is located between the two portions and is permanently deformed during assembly of the carburetter to conform to the shape of the cooperating surface of the movable wall portion. The movable wall portion is pivotally mounted at 15 and is movable in accordance with adjustment of the throttle 24 by a servomotor 26 actuated by the degree of vacuum present at location 36. Movement of the wall portion 12 simultaneously controls the flow area of the main fuel jet 18 by a metering needle 16 attached to the wall portion 12 and tapered to provide richer air/fuel mixture at the smaller Venturi areas.
Patent GB-1344900-A (GB)
Title: Self-contained single unit implantable artificial heart
IPC: A61M60/268
Filed: 1971-11-09
Abstract: 1344900 Steam engines or vapour engines in artificial hearts ATLANTIC RICHFIELD CO 9 Nov 1971 [18 Dec 1970] 51948/71 Headings F1M F1Q [Also in Division A5] An artificial heart includes a Rankine cycle engine having a cylinder 14, a fixed piston 15, and a reciprocally movable cylinder head 16, a thermo-electric convertor 12, and a source 11 of thermal energy, for instance a compound of radio-isotope plutonium 238 which provides heat for boiling the working fluid of the engine, and for producing electricity from the convertor. A pusher plate member 21-21 is attached to the cylinder head 16 so that when the cylinder head is moved artificial right and left ventricles 19, 20 are simultaneously compressed by the pusher member to expel blood therefrom. An inlet valve 17 and an outlet valve 18 are provided in the piston 15, a boiler tube 13 surrounds the energy source 11 and supplies vapour to the inlet valve, a feed liquid pump 39 driven by a solenoid 40 pumps working liquid to the boiler, and a spiral capillary condenser tube 33, lined with fibrous metal wick, extends from the exhaust valve to the pump 39. The thermo-electric convertor 12 may consist of a series of silicon-germanium semiconductor thermo-couples. The radio-isotope may be shielded by a platinum capsule 41, with a vent 42, and an interstitial fluid 43 is present to assist excess heat dispersion A relief valve 45 releases excess pressure from the boiler. The engine working fluid may be hydrocarbon, halogenated hydrocarbon or water. Electronic control circuits are provided to respond to a physiological variable such as blood pressure to control the opening and closing of the valves 17, 18, which are solenoid operated, and so to control pulse rate. Pulmonary blood pressure is sensed by a circuit which controls an electromagnetic valve 30 in the right ventricle inlet, thus preventing pulmonary edema. To assist the movement of the piston and cylinder head away from each other, bellows 47, 48 are provided which are filled with xenon gas and which also contain interlocking thermally insulating cans 50, 51, see also Fig.1 (not shown).