baber/WOPTO huggingface dataset:
Patent GB-1365678-A (GB)
Title: Continuous clean sand filter for water clarification
IPC: B01D24/30
Filed: 1971-12-23
Abstract: 1365678 Filter bed W E HOPE and M J HOPE 23 Dec 1971 [25 Sept 1970] 45785/70 Heading BID Effluent water or other liquid is filtered downwards through a sand bed contained between gratings 5 and 7, and clean sand is continuously fed to the bed by means 2, contaminated sand and filtered solids being continuously removed from above grating 5 by endless scraper conveyor 3. Grating 7 is of wedge wire, woven wire or perforate plastics with apertures fine enough to retain the sand, while grating 5 has larger apertures to allow upward passage of sand therethrough. Means 2 comprises a worm feeding sand into perforate pipe A. Spreader 4 spreads incoming liquid from pipes 9 over the whole bed area.
Patent GB-1046010-A (GB)
Title: Improvements in or relating to mowing machines
IPC: A01D57/26
Filed: 1964-11-12
Abstract: 1,046,010. Mowing machines. TEXAS INDUSTRIES Inc. Nov. 12, 1964 [Nov. 15, 1963], No. 46225/64. Heading A1F. A mowing machine comprising a frame 1, 2, and a cutter bar 4 pivoted to the frame about a horizontal axis extending substantially parallel to the direction of travel includes a swath board 9, 10 the rear portion of which is turnable relative to the other portion about a shaft 11 so that when the cutter bar is in its inoperative (vertical) position the rear portion may be positioned so that it does not project rearwardly from the machine. The rear portion 10 is retained in the two portions shown by a spring- loaded locking pin 12. The frame includes a coupling arm 5 one end of which is turnable about a vertical pivot whilst its opposite end carries the cutter bar.
Patent GB-1234783-A (GB)
Title: Improvements in or relating to connectors for connecting w.c. pans to soil pipes
Inventor: EDWARDS NIGEL JOHN DEUCHAR
IPC: F16L21/025
Filed: 1967-10-10
Abstract: 1,234,783. Pipe joints. PHETCO (ENGLAND) Ltd. 10 Jan., 1969 [10 Oct., 1967], No. 46320/67. Heading F2G. A plastics or rubber elbow connector 10 comprises end portions 14 and 15 adapted to sealingly engage with the internal surface of a soil pipe and the external surface of a W.C. pan outlet, the end portions 14 and 15 having annular resilient fins 17 and 19 disposed respectively externally and internally thereon. As shown in Fig. 1, the connector is a one-piece moulding and detachable sealing rings 20 and 21 may be located between the sealing fins to provide supplementary sealing. In a modification, Fig. 2 (not shown), the arcuate intermediate portion of the connector is of substantially constant section and is joined to the end portion 15 by conical section. The end portions are of rubber having a shore hardness of 75 degrees and the intermediate portion is of rubber having a shore hardness of 90 degrees. In another embodiment, Fig. 3 (not shown), the end portions are separately formed and have annularly-ribbed recesses receiving the ends of the intermediate portion.
Patent GB-1441298-A (GB)
Title: Charge distributing device for a shaft furnace
IPC: F27B1/20
Filed: 1973-10-04
Abstract: 1441298 Charging shaft furnaces DES ANCIENS ETABS PAUL WURTH SA 4 Oct 1973 [11 Oct 1972] 46469/73 Heading F4B A distributor shoot 2 in a shaft furnace is pivotable about an axis 8, 10 on a rotary housing 12, the drives for rotating the housing and for varying the shoot pitch angle being operable independently. As shown, the rotary housing 12 is mounted through a toothed rim 20 in a rotary roller connection 14 which is fixed to the underside of the upper wall 16 of a drive chamber 18. The rim 20 is driven by a motor 22 through a reduction gear 24 and gears 28, 30. The shoot 2 is pivoted to a rod 34 which is connected by a ball and socket joint 38 to a retaining ring 40 secured to a rotary ring 44 which is mounted in a rotary roller connection 46 supported by three vertically movable nuts 48. The nuts 48 are engaged by threaded rods which are rotatably supported and which are driven through worm gearing 62, 68 by a common drive motor to raise and lower the nuts 48 to vary the pitch angle of the shoot 2.
Patent GB-1315764-A (GB)
Title: Branch pipe or fitting sonnection or attachament or hydraulic household and other systems
IPC: F16L41/02
Filed: 1971-10-07
Abstract: 1315764 Branch pipe fitting PLASTOTECNICA SA 7 Oct 1971 [15 Jan 1971] 46681/71 Heading F2G A branch pipe fitting comprises an open hoop-shaped member 12 capable of being positioned about a main pipe 13, the ends of the member 12 having part-cylindrical sections 14 which form a tubular branch element when the member 12 is closed around the pipe. The tubular branch element sections 14 receive a coupling sleeve 17 carrying a sealing ring 19 which is urged into fluid-tight contact around a branch opening in the main pipe 13 by a coupling nut 23 which engages the sleeve 17 and screws on to the tubular element 14. The hoopshaped member 12 is of resilient or flexible material such as metal or synthetic plastics material. The sealing ring 19 is located in an open groove 18 in the end of the sleeve 17 which is curved to fit the main pipe 13. The bore of the other end of the sleeve 17 is threaded to receive a threaded end 21 of a nozzle or other fitting 22, e.g. in a domestic hydraulic system. Guide members (not shown) on the interior surfaces of the elements 14 correctly orientate the coupling sleeve 17. The branch opening in the pipe 13 may be drilled after the branch fitting has been attached around the pipe wherein the sleeve 17 acts a guide for the drill.
Patent GB-1422387-A (GB)
Title: Butadiene-isoprene copolymers and their preparation
Inventor: PERRY DALE C
IPC: C08F2/00
Filed: 1973-10-10
Abstract: 1422387 Butadiene - isoprene copolymerization GOODYEAR TIRE & RUBBER CO 10 Oct 1973 [9 Nov 1972] 47238/73 Heading C3P A butadiene-isoprene copolymer containing predominantly pendant structures, i.e. 1, 2- and/or 3,4- is obtained by solution copolymerization in the presence of (a) a triorganoaluminium or diorganoaluminium hydride and (b) a titanium ester of the formulae or where R is hydrocarbyl. The organoaluminium compound may be complexed with electron donors such as ethers. In the examples, the monomers are copolymerized in pentane using Et 3 Al-Ti(O-i-Pr) 4 .
Patent GB-1161725-A (GB)
Title: Hydrocracking process with Zeolite and Amorphous Base Catalysts
IPC: C10G65/10
Filed: 1967-10-17
Abstract: 1,161,725. Hydrocracking. MOBIL OIL CORP. 17 Oct., 1967 [17 Oct., 1966], No. 47248/67. Heading CSE. A process for selectively producing gasoline boiling range hydrocarbons by hydrocracking comprises contacting under hydrocracking conditions a heavy petroleum hydrocarbon feed containing less than 500 p.p.m. organic nitrogen with an amorphous base hydrocracking catalyst and a zeolite base hydrocracking catalyst, said contact being carried out in a series of catalyst beds wherein said amorphous base catalyst is separated from said zeolite base catalyst, said amorphous base catalyst containing a hydrogenation component and having a Cat A activity index above 20, said zeolite base catalyst having pore size openings between 6 Angstroms and 15 Angstroms and containing a hydrogenation component and less than 5 weight per cent sodium oxide, recovering a normally liquid effluent from the last catalyst bed, separating a gasoline boiling range fraction from said liquid effluent, and recycling at least a portion of the liquid effluent boiling above the gasoline range to contact the amorphous base hydrocracking catalyst bed. It is possible to use the amorphous base catalyst first, but it is preferred to use the zeolite base catalyst first and the amorphous base catalyst second. The amorphous base catalyst may comprise silicaalumina, silica-zirconia, silica-magnesia, silica, or alumina containing a hydrogenation component such as iron, nickel, cobalt, the platinum group metals, or the palladium group metals; preferred examples being nickel-tungsten sulphide, nickel sulphide, cobalt-molybdenum sulphide, platinum and palladium. The zeolite catalyst comprises a natural or synthetic zeolite carrier which may be base-exchanged with a hydrogen-containing cation or a metallic cation such as nickel or a rare earth metal, plus a hydrogenation component which may be chromium, molybdenum, tungsten, iron, nickel, cobalt, a platinum group metal or a palladium group metal; preferred components being nickel-tungsten, cobalt-molybdenum, platinum and palladium. There may be a preliminary hydrofining stage to reduce the amount of sulphur and nitrogen in the feed.
Patent GB-1128671-A (GB)
Title: Improvements in disc brakes
Inventor: HARRISON ANTHONY WILLIAM
IPC: F16D55/2255
Filed: 1964-11-20
Abstract: 1,128,671. Disc brakes. GIRLING Ltd. 19 Nov., 1965 [20 Nov., 1964], No. 47334/64. Heading F2E. In a disc brake of the kind in which friction pads adapted to engage opposite sides of a rotatable brake disc 18 are located in a movable caliper 10 which straddles a part of the periphery of the disc and which is mounted to swing about an axis substantially at right angles to the axis of the disc, one of the friction pads 26 is directly applied to the disc 18 by hydraulic or other actuating means located in one limb 14 of the caliper and the other friction pad 13 is secured to the other limb 12 of the caliper 10 and is applied to the other face of the disc by the reaction on the caliper, the drag from the directly operated friction pad 26 being taken by a pin 34 or bar slidably mounted in the caliper 10 and passing through an opening or notch 36 in the rigid backing plate 28 to which the friction pad 26 is secured. The inner end of the pin or bar 34 carries a friction pad 38 for engagement with the rotatable brake disc 18 such that when a mechanically applied lever 44 is rotated about its pivot 48 in an anticlockwise direction a cam member 40 pivoted to the mechanical brake lever 44 at 42 the friction pad 38 at the end of the pin or bar 34 engages the brake disc to constitute a mechanically actuated parking or emergency brake. The cam member 40 is provided with ratchet teeth 50 which are engaged by a spring pawl 52 to automatically adjust for friction pad wear in the mechanically actuated parking brake. The pin 34 takes up the drag forces experienced by the directly operated friction pad assembly 26, 28 when actuated by an hydraulic piston (24) and cylinder (22) arrangement. The axis of the pin 34 instead of being at right angles to the plane of the brake disc 18 as shown, may be inclined to that plane in a direction such as to provide a self-energizing or servo-action when the brake is applied.
Patent GB-1491789-A (GB)
Title: Method of and apparatus for processing printed circuits
IPC: C23F1/00
Filed: 1975-11-18
Abstract: 1491789 Plastics bags P KEPETS 18 Nov 1975 [19 Nov 1974] 47489/75 Heading B8K [Also in Divisions B6 and G2] A container in the form of a tube 1, Fig. 1 and 2, of thin, flexible, transparent plastics material, is closed at one end by two welding seams 3, while the open end 4 is temporarily sealed by folding over and applying a removable clip 5. A hole 8 or eyelet is provided so that the tube can be suspended.
Patent GB-1483471-A (GB)
Title: Electrostatic copying
IPC: G03G15/08
Filed: 1974-11-06
Abstract: 1483471 Toner concentration sensing ADDRESSOGRAPH MULTIGRAPH CORP 6 Nov 1974 [3 Dec 1973] 48048/74 Headings G2H and G3R A toner concentration sensing means comprises a sensing member which is developed and cleaned independently of the latent image. A magnetic brush developer contacts a driven, rotary, relatively narrow sensing wheel having an optical read head 20 positioned to detect changes in toner concentration by intensity of reflected light. The sensing wheel is made up of three parts 22, 23, 24 which are separated by insulations 26 and which are connected to different electrical potentials to simulate an image pattern. Light emitted from a source 30 in head 20 is reflected from toner covered part 23 and sensed by photo-sensor 36. Part 23 is cleaned by reversing the polarity thereon. Cleaning and developing of part 23 occurs an odd number of times in each revolution of the wheel. In a second embodiment an insulating material is used for the magnetic brush and the outer parts 22 and 24 are used in a similar manner to part 23. Circuitry is provided to compare the difference between the signals from the developed part 23 and cleaned part 23, with a reference signal for an ideal image.
Patent GB-1512290-A (GB)
Title: Method and apparatus for determining fluid flow rate and/or for exercising a control in dependence thereon
IPC: G01P13/00
Filed: 1975-11-24
Abstract: 1512290 Measuring fluid flow-rates electrically J AGAR INSTRUMENTATION Ltd 29 Oct 1976 [24 Nov 1975] 48186/75 Heading G1N Apparatus for determining fluid flow-rate through a conduit 10 (Fig.1) comprises two heated thermistors 13, 14 located symmetrically with respect to an orifice plate 11, the thermistors being connected in a network which produces a pulse train whose frequency is proportional to the thermistor temperature and resistance ratio, which is stated to be proportional to the fluid flow-rate. Alternative forms of obstruction 11 are described, and the flow measuring unit may be located in a by-pass tube.
Patent GB-1293174-A (GB)
Title: Improvements in the production of cellular rubber sheeting
Inventor: INGHAM JEFFREY
Filed: 1969-10-01
Abstract: 1293174 Backing carpets DURIE & MILLER (HOLDINGS) Ltd and MEADOWS HOLDINGS Ltd 21 Sept 1970 [1 Oct 1969] 48223/69 Heading B5N [Also in Division C3] A carpet is backed with rubber made by coating a porous substrate, e.g. a wire mesh, a woven fabric or a fabric comprising a non-woven layer of fibres bonded in a random arrangement, e.g. by fusion, with a substance having non-wetting properties such as polytetrafluorethylene or a silicone, then applying to the coated substrate a layer of foamed latex of a natural or synthetic rubber, causing the said layer to set and thereafter separating the cellular rubber from the porous substrate. The substrate may be an endless belt of stainless steel wire mesh supported on rollers and long enough to provide space for the coating with the non-wetting substance and latex and the setting of the coating. The non-wetting substance may be a liquid and is applied by passing the belt of wire mesh through a bath of the non-wetting liquid. The latex may be spread on the substrate coated with the non-wetting substance by means of a doctor-blade or a pair of rollers.
Patent GB-978645-A (GB)
Title: Waste disposal apparatus
IPC: E03C1/266
Filed: 1962-12-21
Abstract: 978,645. Comminuting apparatus. T. C. R. SHEPBRD. Dec. 18, 1963 [Dec. 21, 1962], No. 48367/62. Heading B2A. Apparatus for the disposal of sanitary towels includes a rotary impeller 3 coacting with a cutting ring 4, and a cover 13, which when closed starts a normally-inoperative motor 1 and initiates a water flow which is in two streams, one flowing down a shoot 10 towards the impeller, and the other being supplied to the impeller and discharged therefrom under centrifugal force to flow over the lower part of the shoot and over the ring 4. As described, water is supplied by a pipe 18 to a chamber 19 at the upper end of the shoot 10. A pipe 20 extends from the bottom of the chamber 19 and communicates with a channel 6, the water passing around a seal 7 so,as to be discharged from the impeller 3 via'an opening 12. A dam 22 formed in the chamber 19 causes the water to flow over it into a channel 21 and thence through the space between the lower edge 16 of a tubular guide member 15 and the case 10. The channel 21 is of relatively small crosssection so that water rapidly overflows from the ring 21 and down the inner wall of the shoot 10 to, the disc 17, whereby the water is uniformly distributed around the inner' wall of the shoot. The shoot includes a drain overflowoutlet 23 connected by a pipe 24 to the main drain-outlet 26 for use if the apparatus is jammed or choked. A lid-operated switch 27 is included in the motor circuit, and also controls a water-supply solenoid valve. A further switch is actuated by water pressure so that the motor cannot start in the absence of a water supply;' and the motor is stopped by a time delay device after a specified grinding time, e.g. 30 seconds. A resilient finger assembly 17 prevents free fall of material into the grinding zone until the motor has started and the' material is wetted. Detergent, disinfectant or deodorant substances' may be added to the water in the chamber.
Patent GB-1344149-A (GB)
Title: Movement pre-selection device for lifts conveyors and the like
IPC: B66B1/34
Filed: 1971-10-18
Abstract: 1344149 Lifting; position indication and control R CHIAPELLA 18 Oct 1971 [19 Oct 1970] 48420/71 Headings B8B and B8L A control system for a lift car or conveyer comprises potentiometer 10, 14 having intermediate tap 12 moved by the lift car, and taps selectively closed by one of relay contacts R1b-R3b to indicate a desired floor for service. In the balancing diagonal of the circuit are disposed the base-emitter junctions of mutually complementary transistors 17, 19, so that, in dependence on the sign of the difference in potential at the taps 12 and R1b, R2b or R3b one or other of the transistors is rendered conducting, energizing one or other of relay coils S, D in the respective transistor collector circuits, thus controlling the lift drive motor via controller CTM to move the lift up or down respectively until the said difference in potential is reduced, cutting off the transistor and stopping the lift at the desired floor. Alternatively the coil S or D operates one or other of holding contacts Sc, Dc so that the lift is energized until both transistors are cut off near the desired floor, and at the precise stopping location, double magnetic armature 44 opens normally closed contacts CM to de-energize coil S or D. Alternatively the balancing circuit may comprise coils (S, D) in series with respective oppositely poled diodes (18, 20), Fig. 1 (not shown). The potentiometer 10 is either a wire along the lift shaft with a slider (12) fixed to the lift, Fig. 1a (not shown), or steel cable (26), Fig. 2 (not shown), additionally controlling the lift speed limiter (not shown) passes over pulleys (22, 24) electrically insulated from the support structure, and has its ends, across which a voltage is applied, mounted in insulating discs (50, 52) on an assembly (36, 38, 40) fixed to the lift car. Either one of the pulleys (22, 24), the lower one supported by a weighted tension lever assembly (36, 38, 40) provides the tap 12 of the potentiometer. In operation a passenger presses one of buttons B1-B3 energizing one of relay coils R1-R3, self held by a contact R1a-R3a, and operating one of the contacts R1b-R3b. The consequent energization of one of coils S, D causes via contacts Sa, Sb, or Da, Db the maintenance of the above state until the lift reaches the desired floor, whence the system is again sensitive to operation of buttons B1-B3. Power supply AFCS and master switch 1G are provided. The system is applicable to passenger or goods lifts, cranes access platforms or filing systems. A supply - V 1  enables the bridge balancing points to be adjusted.
Patent GB-1310729-A (GB)
Title: Process for preparing water-soluble acrylic polymers and copoly mers
IPC: B29C41/12
Filed: 1970-10-12
Abstract: 1310729 Preparing water-soluble acrylic polymers RHONE-PROGIL 12 Oct 1970 [22 Oct 1969] 48424/70 Heading C3P The preparation of water-soluble acrylic polymers or copolymers in the solid state is effected by depositing an aqueous solution of the corresponding acrylic monomer or monomers, containing a photopolymerization initiator and having a pH of at least 8, in the form of a layer or as discrete droplets on a water-repellent support, irradiating the layer or droplets with light of wavelength 1500 to 5000 Š, and removing the resulting acrylic polymer from the support. The preparation can be effected continuously (e.g. on a movable support) or discontinuously. If necessary, the polymer is dried before being removed from the support. Suitable photoinitiators include diacetyl, dibenzoyl, benzophenone, benzoin and benzoin alkyl ethers. A UV absorber may optionally be present. Monomers specified are acrylic and methacrylic acids and their amides, nitriles, esters and salts, e.g. acrylamide, methacrylamide, acrylonitrile and methacrylonitrile. The acrylic polymers are useful as flocculating agents and thickeners.
Patent GB-1172910-A (GB)
Title: Pipette Assembly having Precise Quantity of Dry Stabilized Reagent and Method of Preparing same
Inventor: GERARDE HORACE W
IPC: B01L3/02
Filed: 1967-10-26
Abstract: 1,172,910. Pipette assembly. H. W. GERARDE. 26 Oct., 1967 [27 Oct., 1966], No. 48808/67. Heading B1X. A method of providing for storage an accurately predetermined quantity of a stable dry reagent within a chamber 23 in a body 12 of a micro-pipette assembly comprising a capillary tube 14 with an accurately calibrated bore comprises making an unstable solution of accurately known concentration of the otherwise stable dry reagent in a carrier liquid, inserting the capillary of the assembly into the solution whereby the capillary is filled with solution by capillary action, transferring the solution from the capillary into chamber 23 by attaching sheath 16 and squeezing it or by applying an aspirating force at 20 and evaporating the carrier liquid to leave the accurately predetermined quantity of the dry reagent in the chamber.
Patent GB-1424285-A (GB)
Title: Oscillators
IPC: H03B5/00
Filed: 1973-10-19
Abstract: 1424285 Oscillator circuits MULLARD Ltd 19 Oct 1973 48832/73 Heading H3F A continuously tunable oscillator comprises an amplifier AMP having a feedback path which includes a tuned circuit TC, a delay DL and a phase shifter PS. The phase shifter comprises a fixer phase shift device PS<SP>1</SP> giving four quadrature outputs (from RC networks, Fig. 4, not shown) which are connected to a complex capacitor unit. This unit has two sets of fixed vanes AA<SP>1</SP> and BB<SP>1</SP> which are 90 degrees offset and two sets of movable vanes C, D which are ganged together in phase, Fig. 2 (not shown). Alternatively a complex variable inductor may be used. When first switching on, the oscillatory path by-passes the delay D and phase shifter PS through an alternative variable resistance path R having a lower gain. A phase detector may be connected across the tuned circuit, the output of the phase detector being used to turn off the oscillator for a predetermined time when the phase difference exceeds a predetermined limit.
Patent GB-1193978-A (GB)
Title: Improvements in Valves, particularly for Gas Blast Electric Circuit Breakers
Inventor: GRUNE PER OLOF
IPC: H01H33/32
Filed: 1967-10-27
Abstract: 1,193,978. Gas-blast switches. ALLM€NNA SVENSKA ELEKTRISKA A.B. 27 Oct., 1967 [28 Oct., 1966], No. 48860/67. Heading H1N. [Also in Division F2] A valve for a gas blast electric circuit-breaker has a valve member 6 movable by a pistoncylinder 2, 20 from a seat 11 to a seat 12 to connect a conduit 9 communicating with the contact breaker either to a source of compressed gas connected at 7 or to atmosphere via apertures 10. The valve member is pressure-balanced by gas pressure in chamber 16 communicating with port 7 via valve member apertures 17, 18. The valve at high potential is insulated from the earthed actuator by a hollow insulated operating rod 4 and pillar insulator 3, both filled with gas. Alternatively, the valve and actuator may be built as a unit and maintained at the same potential. In a further embodiment wherein the valve and actuator are built as a unit the chamber below the actuating piston 20 communicates with the conduit 9 via a tube with a restriction therein. This is to overcome a net fluid force on the valve member holding it open.