baber/WOPTO huggingface dataset:
Patent GB-1323327-A (GB)
Title: Self cleaning filter
IPC: D06F43/08
Filed: 1970-10-09
Abstract: 1323327 Filters for liquids; cleaning thereof G MAESTRELLI 9 Oct 1970 [15 Dec 1969] 48152/70 Heading BID A filter assembly, comprising a cylindrical casing B wherein stationary filter elements C are disposed at spaced intervals in circular arrangement about the central axis of the casing, is provided with a centrifugal impeller D mounted, at the central portion of the casing, on a shaft F; and the impeller is rotated periodically by motor M whereupon it causes forced motion of the liquid in the casing and clears solid matter from the filter surfaces. Each filter element C comprises a core helically-wound with wire 24 on which filter powder, e.g. kieselguhr, is distributed. In normal operation, liquid to be filtered is introduced through duct 18 and, after it has filled casing B, passes through filter elements C and flows to manifold H; the filter liquid then leaves the assembly through duct 22. When the filter elements C require clearing, the flow to duct 18 is discontinued, and the impeller D is set in operation. Sludge, collected at the bottom of casing B, is periodically discharged through outlet 20. The impeller, which is of the axial intake and radial delivery type, consists of two halves each consisting of scrollshaped blades 72 having an inlet section 74 and an outlet section 76. A filter assembly is described having four sets of filter elements arranged in two axially-displaced groups, each group comprising two concentric rings of filter elements surrounding a centrifugal impeller (Fig. 3, not shown). The filtration of drycleaning solvents, oil, wine, and water from a swimming pool, is referred to.
Patent GB-1016470-A (GB)
Title: Tamping device
IPC: E01C19/34
Filed: 1964-11-27
Abstract: 1,016,470. Road rammers. A. HOFFMANN. Nov. 27, 1964, No. 48217/64. Heading E1G. A power driven road edge tamping device 6 is mounted on a steerable wheeled chassis 1 to have vertical, horizontal and pivotal adjustment. The tamper is resiliently mounted by a holder 5 on a transverse bar 4 by a clamping device 7. A spacing arm mounted on the chassis and arranged to contact the kerb provides spacing means. The tamping plate 14 may be provided with a cutting edge for trimming.
Patent GB-1132009-A (GB)
Title: Friction elements subjected to corrosion
IPC: C23F17/00
Filed: 1965-11-17
Abstract: 1,132,009. Bearings. AUTOMOBILES M. BERLIET and HYDROMECANIQUE ET FROTTEMENT. 17 Nov., 1965 [12 April, 1965], No. 48842/65. Addition to 1,058,031. Heading F2A. In a modification of the assembly of the parent Specification No. 1,058,031, the bearing area of one of the elements is cold hardened by knurling or peening which produces flutings inclined to the direction of relative rotation, this hardening being performed before the introduction of nitrogen or nitrogen and sulphur.
Patent GB-1167526-A (GB)
Title: Nematocidal Compositions
IPC: C07F9/16
Filed: 1966-11-01
Abstract: 1,167,526. Nematocides containing diazinon. J. R. GEIGY A.G. 1 Nov., 1966 [2 Nov.. 1965], No. 48855/66. Heading A5E. A nematocidal composition comprises O, O,-diEt-O-(2-isoPr-4-Me-6-pyrimidyl) thiophosphate and an emulsifier consisting of a calcium salt of dodecyl benzene sulphonate and nonylphenol polyoxyethylene in butanol. A suitable emulsifier is sold under the name Emullat (Registered Trade Mark) P 140 HFP. An acid acceptor may be present as stabilizer, e.g. epoxidized linseed oil, epoxidized soybean oil, propylene oxide or epichlorhydrin.
Patent GB-1205464-A (GB)
Title: Graft polymers of vinyl halide monomers and mercapto-functional diene polymers
IPC: C08F279/02
Filed: 1968-10-16
Abstract: 1,205,464. Graft polymers. STAUFFER CHEMICAL CO. 16 Oct., 1968 [7 Nov., 1967], No. 49077/68. Heading C3G. A vinyl halide polymer is prepared by the free-radical polymerization of a monomer composition containing at least 50% by weight of a vinyl halide monomer of formula wherein Z is hydrogen or halogen and Hal means halogen, in the presence of up to 50% by weight of the total amount of monomer in said monomer composition of a polymerizable organosolvent soluble unsaturated diene polymer having pendant mercaptan groups. The diene polymer is a natural or synthetic rubber containing at least one carbon-carbon double bond and at least one mercaptan group per molecule. Monomers which may be copolymerized with the vinyl halide monomer include vinyl acetate, vinyl alkyl ethers and esters of maleic, fumaric, acrylic or methacrylic acid. In the example, vinyl chloride is polymerized in an aqueous suspension containing polybutadiene modified by inclusion of mercaptan groups.
Patent GB-1400850-A (GB)
Title: Communication system using geosynchronous satellites in quasiequatorial orbits
IPC: H04B7/15
Filed: 1972-10-25
Abstract: 1400850 Space satellite communication systems RCA CORPORATION 25 Oct 1972 [26 Oct 1971] 49174/72 Heading H4L In a space satellite communication system a satellite is located at substantially synchronous altitude above the earth but has a progressively inclined orbit D, Fig. 1, relative to the equatorial plane B of the earth. The ground receiver may be arranged to track automatically the decimal variation in the position of the satellite or a receiver with a fan-shaped aerial beam may be used, so as to cover all positions of the satellite. Two or more satellites 20, 22, Fig. 9, may be used, with a receiver 30, 28 controlled by means 32, 34 for tracking and for changing over from one satellite to the other at predetermined times. The angles between the plane of the orbit of a satellite and the equatorial plane changes slowly over a period of years; consequently if satellites are put up over an interval of years, their positions differ and by switching from one to another at the times when one satellite is directly between the receiver and the sun it is possible to eliminate sun noise.
Patent GB-1030898-A (GB)
Title: Improvements in or relating to an implement for working crop lying on the ground
IPC: A01D78/00
Filed: 1962-12-19
Abstract: 1,030,898. Haymaking machines. C. VAN DER LELY N.V. Dec. 19, 1962 [Jan. 18, 1962], No. 49233/65. Divided out of 1,030,897. Heading AlF. The subject-matter of this Specification is included in Specifications 1,030,897 and 1,030,899 but the claims differ.
Patent GB-1511240-A (GB)
Title: Rotary couplings
IPC: F16D1/12
Filed: 1975-11-11
Abstract: 1511240 Couplings; valves HARPERWYMAN Ltd 11 Nov 1975 [14 Nov 1974] 49341/74 Headings F2U and F2V A coupling consists of first member 10, second member 12 and third member 15. Member 12 fits in member 10 which itself fits in member 15. Peg 13 engages in the slots 11 and 16. The oblique portion of slot 11 is at a different angle to the axis than slot 16. Thus if member 15 is held still and member 12 is rotated, member 10 is made to initially rotate at the same rate as member 12, then at a slower rate and then at the same rate. Fig. 2 shows the coupling used in a gas tap where a differential rate of rotating plug 23 is required. In a modification member 12 is not connected to a stem 14 but is driven by a sleeve having a slot in which projection 13 fits. This means that stem 14 is not moved axially when rotation occurs.
Patent GB-1155895-A (GB)
Title: Sealing Ring Arrangement For A Liquid Supply Cut-Off Valve
IPC: F16K1/42
Filed: 1967-10-31
Abstract: 1,155,895. Valves. DANFOSS A.S. 31 Oct., 1967 [18 Nov., 1966], No. 49453/67. Heading F2V. A supply cut-off valve for oil burning installations includes a valve member 4 provided with a sealing ring 18 retained in a re-entrant recess, the cross-section of the ring being substantially the same as that of the recess so that it fills the recess completely and the risk of blowout of the ring is reduced. The recess is formed by a flat base surface on a member 17 and conical side surfaces on this member and on a sleeve 22 which is press-fitted to the member 17. The valve member is biased in the opening direction by a spring 38 and loaded in the closing direction by a spring-urged piston 5 which is responsive to the inlet pressure. The piston has a port 10 obturated by a port 16 of the valve and controls a by-pass port (not shown) so as to maintain a constant inlet pressure. A resilient ring check valve 21 allows reverse flow through the valve member in the event of excess pressure on the outlet side.
Patent GB-1337220-A (GB)
Title: Monolithic entegrated circuit
Inventor: FISCHER W
IPC: H01L27/02
Filed: 1972-10-27
Abstract: 1337220 Intregated circuits INTERNATIONAL BUSINESS MACHINES CORP 27 Oct 1972 [9 Dec 1971] 49540/72 Heading H1K Voltage-overload protection for the gate insulations of IGFETs in an integrated circuit is provided by a lateral bipolar transistor having its collector region 8 connected to the protected gates by a conductive track 6 and having a further conductor 12 connected to the emitter region 9, the substrate 4 at area 13 and a point of fixed reference, and extending over an insulating layer where it overlies the collector junction 11. Preferably the thickness of the insulating layer 10 over the collector junction 11 is the same as that of the protected IGFET gate insulation and is less than that of the remainder of the insulating layer 7. As an overload voltage on track 6 increases junction 11 is increasingly negatively biased, until at a predetermined bias, reduced by the presence of conductor 12 over the junction 11, avalanche breakdown occurs. Due to the presence of bulk substrate resistance R 2  a point is reached at which the emitter junction becomes forward biased and bipolar transistor action is initiated, causing a sharp reduction of the voltage on conductive track 6.
Patent GB-1139358-A (GB)
Title: Photo-sensitizing a surface
IPC: G03F7/022
Filed: 1966-11-04
Abstract: 1,139,358. Photo-sensitive materials. INTERNATIONAL STANDARD ELECTRIC CORP. Nov.4,1966 [Nov.5,1965], No.49551/66. Heading G2C. A photo-sensitive material comprises a surface to which is applied a composition of an organic amine and naphthoquinone - 1, 2-diazide - 2-sulphonic acid -5 chloride. A copper clad paper support may be coated with the diazide, ethylene diamine, a novolak polyvinyl acetate and a dye imagewise exposed and developed with alkali such as caustic soda and water-glass to remove the exposed areas and then the bared copper is etched to produce a printed circuit.
Patent GB-1443243-A (GB)
Title: Motion picture apparatus
IPC: G03B21/00
Filed: 1973-10-24
Abstract: 1443243 Cinematographic viewer MONTRON CORP 24 Oct 1973 [30 Oct 1972] 49583/73 Heading G2E A motion picture viewing apparatus, for use with a cartridge 12 having an aperture 13, a driven member 18 for advancing a film 14 past the aperture 13 and means e.g. a mirror 19, for receiving and reflecting light towards the aperture to illuminate the film, comprises a housing 11 having a cavity 32 into which the cartridge is inserted, an optical assembly e.g. lenses 57, 58 whose optical axis is in alignment with the aperture 13, and a member e.g. a transparent insert 86, which receives ambient light in a direction parallel to the optical axis and reflects it on to the mirror 19 in the cartridge. The insert 86 is positioned in a recess 87 which extends along one of the walls of the housing. The insert is formed of a transparent plastics material and comprises a transparent window and a totally internally reflecting prism 88. Ambient light travels along the recess 87 and is reflected by the prism through 90 degrees on to the mirror 19. Ambient light also passes directly through the window portion on to the mirror. The lenses 57, 58 are mounted in a barrel-like member 56 carrying a knurled projection 67 which can be engaged by a finger to rotate the member 56 thus moving it longitudinally to adjust the focus.
Patent GB-1151063-A (GB)
Title: Thermal Cut-Outs for Electrically Heated Appliances.
Inventor: TYLER ARTHUR
IPC: H01H71/20
Filed: 1965-07-06
Abstract: 1,151,063. Thermal switches. BULPITT & SONS Ltd. 6 July, 1966 [6 July, 1965; 23 Nov., 1965], Nos. 28490/65 and 49798/65. Heading H1N. A thermally operative cut-out of the kind comprising a spring-loaded plunger normally anchored to a fixed part by the engagement of a pawl on the plunger with a ratchet secured and prevented from rotation by fusible metal which melts on overheating has a ratchet assembly including two or more ratchets 53 arranged in axial alignment each secured by fusible metal to a fixed part and each engaged by an associated pawl 70 on or coupled to a common plunger 64. In a preferred embodiment two ratchets 53 are joined by and integral with a common shaft 54 which rests in a U-shaped block 55 being retained by a guide pin of plunger 64 about which pin is the compression spring 71 loading the plunger which is made from bent sheet metal with two pawls 70, the end face 67 projecting from socket 75 on heater head housing 13 in which the cutout is mounted so that when the fusible metal is melted, plunger 64 ejects a plug plugged into socket 75, having contact pins 27, 30, breaking the circuit. Fusible metal 59 is run in around shaft 54 in block 55, a slug 63 of fusible metal is melted in an axial hole 61 through the ratchet assembly and a slug of fusible metal 62 is melted in a hole 60 in block 55 radial to shaft 54 to secure the ratchet assembly to block 55 and to the inside of sheet metal part 14 in which the cut-out is mounted and which is secured to part 16 of the heater head housing 13. Part 16 is made from sheet metal with its rim spun over an annular plate to which is secured an insulating block 26 by screws, one screw also securing earthing terminal 30 to the plate, block 26 having an external screw thread 32 on to which a protective sleeve is threaded. Leads from the heater element pass into the bores of contact pins 27. In a modification, Fig. 10 (not shown) the heater head is a hot brass stamping. An alternative ratchet assembly comprises a small rectangular metal block with a ratchet mounted on a trunnion in the opposite largest faces of the block.
Patent GB-1271029-A (GB)
Title: Motor driven appliance
IPC: A47J43/08
Filed: 1970-10-21
Abstract: 1,271,029. Culinary mixers. SUNBEAM CORP. 21 Oct., 1970 [30 Oct., 1969], No. 50025/70. Heading B1C. [Also in Divisions F2 and H2] A power unit for a food blender comprises an insulating casing 12 formed by upper and lower parts 26, 25 having end walls 40, 71 respectively carrying bearings 38, 39 for a motor armature 36. A laminated field 44 of the motor is located between pillars such as 26d, 25d on the casing parts 26, 25 and is secured to the lower pillars by screws (55), the pillars having locating surfaces (57, 58, 60) which engage the field to locate the bearings in axial alignment. The upper part of casing part 26 carries a ring 24 for supporting a vessel 14 containing cutting blades 22 which are connected to the armature shaft 37 by a separable coupling consisting of a plate 94 secured to the shaft 37 and including a rubber body 97 formed with driving lugs 98 which extend between radial vanes 102 formed on a member 23 coupled to the cutting blades 22, the lugs 98 and vanes 102 being formed with vertical driving faces and sloping rear faces to facilitate interengagement. Cooling of the unit is effected by a fan 77 enclosed in a recess formed by the lower end wall 71 and drawing in air through an apertured bottom plate 66 spaced from a supporting surface by resilient feet 65, the air passing through a duct 79 formed by internal walls such as 80 in the casing then over the armature and field and out through apertures (87) in the casing below the ring 24. The casing is shaped to provide at the front a support for control switches such as 35, and at the rear, a space for storage of the supply cord 50.
Patent GB-1417306-A (GB)
Title: Dispenser for cleansing and disinfecting pads
IPC: B65D83/08
Filed: 1973-10-29
Abstract: 1417306 Dispenser for cleansing pads V J DOWLING 29 Oct 1973 [30 Oct 1972] 50198/73 Heading B8P [Also in Division A4] Cleansing pads comprising highly porous paper-based material with backing of water impervious paper are dispensed through a slot 15 in a wall of a dispenser 5 and are impregnated by a cleansing fluid fed from a container 21. The pads 8 including a pull-tab 4 are pressed by a weight 12, or by a spring, towards a floor 7 pivoted at 13 and urged upwardly by a spring 14; a stop 17 limits the downward movement of the floor. The fluid is released from container 21 when the floor is pressed downwardly either by the withdrawal of a spike 24 from a closure plug or by the operation of a pump or by the operator momentarily turning on a stop cock. Alternatively a discharge valve could be provided. The fluid is fed to a well 22 in the floor and reaches the lowermost pad through apertures in a plate 23 or the plate may be of porous material. A grooved spike 27 admits air to the fluid container.
Patent GB-1483241-A (GB)
Title: Dry coke cooler
IPC: C10B39/02
Filed: 1974-11-20
Abstract: 1483241 Dry-cooling coke KOPPERS CO Inc 20 Nov 1974 [19 Dec 1973] 50382/74 Heading F4B Apparatus for dry cooling coke comprises a cooling chamber 13 with an upper gas collecting annulus 19 and an offtake 39, a waste heat boiler 51, a return conduit 61 for cooled gases opening into the chamber 13 near its base and a conduit 67 leading from the outlet 33 of a coke receiver 29 to said conduit 61 and an automatic pressure controller 75 in said conduit 67 whereby atmospheric pressure can be preserved at the bottom of the receiver and the apparatus can operate continuously. The apparatus also includes a separating chamber 41 with baffle 43, an evaporator 55, cyclone separators 59 and 69 and a recirculating fan 63. The frusto-conical bottom 23 of the chamber 13 defines an annular space 27 for the recirculated gases. Gases leaving by the conduit 67 can be diverted by a fan 77 and line 79 to a connection 49 between the separator 41 and waste heat boiler 51. All the parts of the cooler, the offtake 39, the separator 41 and a discharge shoot 35 are lined with refractory 37.
Patent GB-506148-A (GB)
Abstract: 506,148. Hollow rollers; drying fabrics &c. JAHR, W. Nov. 2, 1938, No. 31758. Convention date, Nov. 26, 1937. [Class 34 (i)] [Also in Group VIII] A fabric carried to and fro, e.g. by tentering chains 8 through a drying, steaming or like chamber is supported at the bends by a series of metal or other bands 1 stretched over rollers 5, 6 mounted in the chain wheels 7 and anchored to spiders 2 fixed on the shaft 3. Adjustment of the wheels 7 to suit the width of the fabric also adjusts the length of the supporting surface.
Patent GB-1334678-A (GB)
Title: Method and apparatus for the electrolysis of alkali metal chloride
IPC: C25B1/36
Filed: 1970-10-26
Abstract: 1334678 Electrolysis of brine FRIEDRICH UHDE GmbH 26 Oct 1970 [24 Oct 1969] 50672/70 Addition to 1259822 Heading C7B In the electrolysis of alkali metal chloride solution using a mercury cathode as claimed in the parent Specification 1259822, chlorine formed by the electrolysis is withdrawn from the cell via an aperture 5 in the cell wall, and a downwardly extending discharge pipe 6. The chlorine/brine foam withdrawn in practice may be passed via collecting pipe 7 to a separation vessel (not  shown). As shown brine is supplied to the cell via feed pipe 1 and hollow anode stems 2.
Patent GB-1514580-A (GB)
Title: Pulse width modulated signal amplifiers
IPC: H03K7/08
Filed: 1975-12-11
Abstract: 1514580 Amplifiers SONY CORP 11 Dec 1975 [18 Dec 1974] 50889/75 Headings H3T H4L An amplifier, e.g. for audio frequencies, of the type in which the signal pulse-width modulates a rectangular carrier wave, comprises an integrator 9, Fig. 3, fed at 4 with the carrier and at 5 with the signal, a high gain amplifier-limiter 6, a low pass filter 7 for demodulating the modulated carrier to provide an output at 8, and a negative feedback circuit 3 connected between the output of the amplifier and the input of the integrator. The effect of integrator 9 on the sum of the carrier, Fig. 5A, and the signal is to produce the triangular waveform shown in Fig. 5B, which is phase shifted 90 degrees with reference to the carrier, the dotted waveform in Fig. 5B representing the signal. The effect of amplifier-limiter 6 on the triangular waveform is to produce the pulse-width modulated waveform shown in Fig. 5C. It is stated in the specification that distortion may be reduced by the negative feedback circuit without producing instability in amplifier 6 because of the said 90 degree phase shift, thus distinguishing the invention from prior art, Fig. 2 (not shown). A modulation ratio of 100% is said to be obtainable if the feedback current is made less than the current of the triangular waveform.
Patent GB-1438647-A (GB)
Title: Detergent bars
IPC: C11D9/44
Filed: 1972-11-06
Abstract: 1438647 Detergent bars UNILEVER Ltd 5 Nov 1973 [6 Nov 1972] 51078/72 Heading C5D A detergent bar containing a chlorine-releasing bleach is prepared by mixing (A) organic detergent particles and (B) bleach particles coherently coated with an abradable material, and compressing the particles into bar form. The particles (A) and (B) may be of the same size or of different sizes, but should preferably be in the range of 0À5 to 2À0 mm. diameter. The bar contains 5% to 30% by wt. of bleach. The coating material will abrade at the bar surface containing a substrate, e.g. a fabric or domestic hard surface, by manual pressure exerted on the bar and sliding contact between the bar and substrate. It is preferably a wax dispersible in water at 20‹ to 100‹ C., e.g. paraffin wax m.p.t. 45‹ C. or a C 8 -C 22  fatty acid. (A) is soap, an alkane sulphonate, an olefine sulphonate, an alkyl benzene sulphonate or other suitable synthetic detergent. The soap may be sodium soap tallow 80/coco 20, with or without free fatty acid, e.g. 7¢% coco fatty acid. The bleach may be calcium hypochlorite or a chlorocyanurate.