baber/WOPTO huggingface dataset:
Patent GB-1215998-A (GB)
Title: Common valve plate hydrostatic transmission
IPC: F16H39/14
Filed: 1968-09-23
Abstract: 1,215,998. Hydrostatic transmission. TOWMOTOR CORP. 23 Sept., 1968 [2 Oct., 1967], No. 45140/68. Heading F2C. A hydrostatic transmission for a vehicle comprises swash plate pump and motor units 20, 21 arranged side by side on a common valve plate 13 which forms part of a casing 11. The high and low pressure fluid lines are formed in the valve plate 13. The pump swash plate 35 is controlled by a follow up servomotor 70. An input shaft 30 which drives the pump cylinder block 25 has an extension 51 passing through the valve plate 13 to drive an auxiliary pump 50. A relief and make-up valve block 62 is secured to the plate 13.
Patent GB-1271799-A (GB)
Title: Fuel injection pumps
Inventor: BAGSHAW STANLEY ROBERT
IPC: F02M55/00
Filed: 1968-09-24
Abstract: 1,271,799. Fuel injection pumps. C.A.V. Ltd. Sept. 5, 1969 [Sept. 24, 1968], No.45242/69. Heading F1A. In a fuel injection pump having a spill port 14 communicating with the pumping chamber and a fuel gallery 15, the port is formed from inner and outer connecting bores the axes of which are off-set. The bores are arranged such that fuel spilled from the pumping chamber via a helical groove 16 on the plunger 10 into port 14 undergoes turbulent flow before entering the gallery thus reducing wear in the gallery walls.
Patent GB-1408870-A (GB)
Title: Synthetic resin derived from petroleum
IPC: C08F240/00
Filed: 1972-10-02
Abstract: 1408870 Petroleum resins IMPERIAL CHEMICAL INDUSTRIES Ltd 20 Sept 1973 [2 Oct 1972] 45332/72 Addition to 1360389 Heading C3P [Also in Division C5] The process of the Specification 1,360,389 is modified in that a butene is added to the C 5  stream before or after the preheat treatment. The butane may be supplied in the form of the residue remaining after butadiene has been extracted from a cracked C 4  stream.
Patent GB-1445383-A (GB)
Title: Charge storage targets
IPC: H01J9/233
Filed: 1973-09-28
Abstract: 1445383 Semiconductor device; pick-up tubes WESTINGHOUSE ELECTRIC CORP 28 Sept 1973 [11 Oct 1972] 45429/73 Headings H1K and H1D In making a radiation-sensitive target, after forming an etch mask consisting of an array of islands on one surface of a semiconductor wafer, etching the wafer through the mask to form an array of mesas, oxidising the sides of the mesas and the areas between them and forming a PN junction in each mesa contacts are formed by first evaporating an electrically conductive pilot layer on the whole of the treated surface, depositing over it a resist solution and rotating the wafer to so distribute the resist as to leave exposed only the sharp edge at the periphery of each mesa, then electroplating to provide contacts overhanging the edges of the mesas and removing the resist and pilot layer between the contacts. In one method the 111 faces of a 10 ohm. cm. N-type silicon wafer are thermally oxidised and the oxide layer on one face reduced to a mosaic of islands by photoresist etching. The exposed silicon is etched to form a corresponding mosaic of mesas, the oxide islands removed and the etched surface reoxidised. Resist is then spun over the surface as described above and etching effected to remove the exposed and adjacent portions of the oxide to reexpose the mesa tops. Alternatively after the initial oxidation step the oxide on one face is removed and replaced by superposed layers of vapour deposited silicon nitride and dioxide. The dioxide is pattern etched as before, then used as a mask in etching the nitride which in turn masks the etching of the silicon. After forming a thicker oxide layer on the exposed silicon the thinner dioxide is etched from the nitride which is then itself removed by etching. In both cases boron is next diffused into the mesas to form PN junctions and the opposite wafer face etched to remove the oxide and to thin the wafer except perhaps at the edge, prior to formation of an N+ layer by phosphorus diffusion. The target is next tested and if satisfactory thin layers of titanium and gold are evaporated on the first wafer face, resist spun on as before and the wafer placed in a gold electroplating solution to form thick contacts on and overhanging the edges of the mesas. The resist and underlying metal is removed, and a metal layer optionally deposited to provide a conductive grid between the mesas which may be connected to the N+ layer. Alternative wafer materials and orientations are envisaged.
Patent GB-1435825-A (GB)
Title: Cutterhead for a harvesting machine
IPC: A01D34/52
Filed: 1973-09-28
Abstract: 1435825 Cutterhead for harvesters DEERE &CO 28 Sept 1973 [29 Sept 1972] 45570/73 Heading A4C A reel-type cutterhead for a harvesting machine comprises a shaft 34, Fig. 2, a pair of discs 36, 38, Fig. 3, mounted on the shaft 34, a plurality of generally axially extending knives 40 having cutting edges 58 on the periphery of the cutterhead and which define a cylindrical surface of rotation and are angled relative to the axis of the cutterhead, and a pair of knife support structures 42 mounting the knives 40 on the discs 36, 38, each support structure 42 having a seat 62 against which the knife is releasably clamped and an abutment (74), Fig. 4 (not shown) for a cam 72 so that, on releasing the clamp, adjustment of the cam 72 shifts the respective knife 40 in the radial direction. The clamping means is a nut and bolt 70, 68. The cutterhead is mounted in a housing (18), Fig. 1 (not shown) of a forage harvester and the knives 40 co-operate with a shear bar (22) to cut crop fed in by feedrolls (24). The cut crop is fed to an auger (30), a blower type elevator 32 and a collecting vessel, all of which are powered from a tractor which the cutterhead trails. Knife Supports: An inner portion 46 of the support structure 42 is bolted to the discs 36, 38 through bores 52. Corresponding bores 52 in the two discs 36, 38 are angularly offset so that the knife 40 makes an angle of about 8 degrees with the cutterhead axis. The outer portion 60 of the support structure 42 has a generally radially extending slot 64 through which the bolt 68 may be moved to move the knife 40 radially. This is achieved by rotating the bolt 68 to which the cam 72 is welded, the knife 40 is then clamped by tightening the nut 70 and a set screw 76. Knives: Each knife 40 has an elliptical cutting edge 58 and a cross-sectional shape that varies from one end to the other so that the knife 40 may be clamped flat against both the surfaces 62 on the support elements 42 on the two discs 36, 38 and at an angle to the axis. The number of knives 40 may be varied but they are generally equiangularly spaced about the periphery of the cutterhead.
Patent GB-1453208-A (GB)
Title: Bottle cap of shrinkable plastics material
IPC: B65D41/54
Filed: 1974-10-25
Abstract: 1453208 Tamper-indicating bottle cap of shrinkable plastics material METALLKAPSELFABRIK LOOS & CO GmbH 25 Oct 1974 [16 March 1974] 46228/74 Heading B8T A bottle cap or cover 2, made from shrinkable synthetic plastics material which can be closely shrunk on to a bottle neck 1 over a peripheral projection 4, is provided with at least one axially extending row of perforations 3 as a tamperindicating feature. The perforations 3 start at a distance b below that part of the cap 2 which, in use, is situated over the peripheral projection 4 and ends at a distance a from the lower edge of the cap such that the cap can be shrunk on to the bottle neck without the cap splitting along the, or any, row of perforations, and the cap splits along at least one row when the shrunk-on cap is moved upwardly over the projection 4. The projection 4 may be part of the bottle neck or a crown closure or a screwed stopper.
Patent GB-1361075-A (GB)
Title: Oxidative dehydrogenation of ethers and esters
IPC: C07B35/04
Filed: 1971-10-05
Abstract: 1361075 Oxidative dehydrogenation; unsaturated ethers GOODYEAR TIRE & RUBBER CO 5 Oct 1971 [23 Nov 1970] 46256/71 Heading C2C Ethers R-O-R, where each R is C 1-4  alkyl, at least one of which contains at least two carbon atoms, or the R's are linked to form a C 3-8  heterocyclic ether, are dehydrogenated by reacting 1 mole ether with 0À5-1 mole O 2  at 400-700‹ C. using a liquid hour space velocity of 0À5-4, in contact with a catalyst selected from bismuth oxide-molybdenum oxide, bismuth oxide-phosphomolybdic acid, stannic oxide-phosphomolybdic acid, stannic oxideantimony oxide, uranium oxide-antimony oxide, cobalt oxide-molybdenum oxide, bismuth oxidetungsten oxide, chromium oxide-tungsten oxide, and cupric oxide-selenium oxide.
Patent GB-1388706-A (GB)
Title: Thickener composition
IPC: C09D7/00
Filed: 1972-10-06
Abstract: 1388706 Explosive compositions GENERAL MILLS CHEMICALS Inc 6 Oct 1972 [8 Oct 1971] 46267/72 Heading C1D [Also in Division C3] An explosive slurry comprises water, an explosive substance and a thickener composition comprising a blend of xanthomonas gum and a hydroxyalkyl ether of guar gum. The explosive formulation exemplified comprises NH 4 NO 3 , NaNO 3 , NH 4 ClO 4 , aluminium flakes, potassium antimony tartrate and K 2 Cr 2 O 7  in the above slurry wherein the guar ether is hydroxypropyl guar gum. Other ingredients referred to are antimony oxide, ammonia water, chromic nitrate, and zirconyl sulphate. Reference has been directed by the Comptroller to Specification 1,304,500.
Patent GB-1434571-A (GB)
Title: Plastics composition
IPC: C08K5/00
Filed: 1973-10-04
Abstract: 1434571 Degradable thermoplastics compositions IMPERIAL CHEMICAL INDUSTRIES Ltd 26 Sept 1974 [4 Oct 1973] 46379/73 Addition to 1342622 Heading C3P Degradable thermoplastics compositions comprise (1) an iron salt of a C 3-30  organic acid as prodegradant and (2) 2-hydroxy-4-octyloxybenzophenone, 2 - (2<SP>1</SP>- hydroxy - 3<SP>1 </SP>- t - butyl- 5<SP>1</SP> - methylphenyl) - 5 - chlorobenzotriazole and/or 2<SP>1</SP>,4<SP>1</SP> - di - t - butylphenyl 3,5 - di - tbutyl - 4 - hydroxybenzoate as UV - stabilizer. The compositions may contain conventional stabilizers, e.g. 2,6-di-t-butyl-4-alkylphenols, and anti-blocking slip and antistatic additives. The polymer may be polyethylene and the prodegradant may be ferric stearate.
Patent GB-1500309-A (GB)
Title: Friction detent to permit setting of digital clock
IPC: G04B19/21
Filed: 1975-11-11
Abstract: 1500309 Digital clocks BUNKER RAMO CORP 11 Nov 1975 [9 April 1975] 46567/75 Heading G3T In a clock having a plurality of axially spaced time indicating drums, one drum 18 is coupled to an intermittently advanced drive disc 20 by means of a detent ring 48 which is keyed to the disc and biased toward the drum by a spring 52 so that interlocking projections and recesses 54, 56 normally ensure that the drum is indexed with the disc 20 but allow the drum to be turned manually during setting. The spring 52 may be replaced by a spring washer (76), Figs. 5 and 6 (not shown), and the recesses may be in the ring and the projections on the drum Fig. 2A (not shown). As described the drum 18 is a units of minutes drum fixed to a shaft 12 on which the drive disc and the other indicating drums such as seconds drum 22 and the tens drum 16 are freely rotatable. The seconds drum advances the disc 20 by one step per minute. The projections and recesses 54, 56 and keyway 46 in the ring 48 are so arranged that the indicia on drum 18 are properly centred in a viewing aperture. The shaft 12 carries a bevel gear (79), Fig. 1 (not shown) which can be engaged by a similar gear (68) on a manually operable setting spindle.
Patent GB-1040984-A (GB)
Title: High frequency electron discharge apparatus
IPC: H01J23/00
Filed: 1964-02-20
Abstract: 1,040,984. Travelling wave tubes. VARIAN ASSOCIATES. Feb. 20,1964 [ March 18, 1963], No. 46626/65. Divided out of 1,040,983. Heading H1D. A high-frequency electron discharge tube apparatus has, disposed in the space between a main body shell, extending between an electron gun and a collector assembly, and focusing means surrounding the main body shell, a plurality of separate heat-conductive particles so as to provide a path of low thermal resistance compared to air. The particles are spherical and of metal, e.g. copper or aluminium, and may be either hollow or solid. They have a diameter, or maximum dimension, of<SP>3</SP>/100-<SP>15</SP>/100 of an inch.
Patent GB-1358717-A (GB)
Title: Holographic multicolour technique
IPC: G03H1/26
Filed: 1971-10-08
Abstract: 1358717 Multi-colour nolograms RCA CORP 8 Oct 1971 [14 Jan 1971] 46934/71 Heading G2J The colour components of a scene are recorded holographically as aplurality of superimposed holograms wherein the angular orientation of the hologram recording medium with respect to the scene components is varied by angles other than 0 degrees or 180 degrees during formation of the successive hologram. A hologram is recorded on medium 134 of a first colour separation transparency 124 of an object or scene. The medium 134 is then angularly rotated in its own plane and a second hologram recorded thereon of a second colour separation transparency of the object or scene. A third such hologram may similarly be recorded so that the medium 134 bears three superimposed holograms of different angular orientation representing the three primary additive colours. A monochromatic coherent light source is used in the recording. The record medium 134 is located at a position displaced from the back focal plane of a lens 130 by up to  20 times the depth of focus of the lens. It is preferred that the angular orientation of the holograms differ by at least 10 degrees and at most 170 degrees; also the difference between any one pair of positions should not equal or be an integral multiple of the difference between another pair. In reproducing a coloured image the hologram 300 (which may have been made reflective) is illuminated by three focused white light sources 304, 310, 316 each having an appropriate filter 306, 312, 318, whereby the resulting beams in the three primary colours are incident upon the hologram with meridional angles corresponding to those used by the monochromatic beam in the hologram formation to give a single multi-coloured image. Preferably the image bearing beams reflected from the hologram pass a field lens 319 and a projection lens 320. A focused multi-coloured image is formed on a screen which is a slightly diffusing plane surface 322 of a viewing lens 324. In an alternative embodiment the hologram is transmissive. The reflective hologram may be formed as phase holograms from which duplicate copies may be made.
Patent GB-1204767-A (GB)
Title: Improvements in or relating to sealing chambers for electric cables
Inventor: HAMBLIN BRIAN DAVID
IPC: H02G15/04
Filed: 1968-10-03
Abstract: 1,204,767. Cable glands and terminations. HAWKE CABLE GLANDS Ltd. 23 July, 1969 [3 Oct., 1968], No. 46956/68. Heading H2E. A sealing chamber around a cable with its sheathing 15 cut back comprises a barrel 5 having, internal threads 6 engaging an inlet member 9 forming a cable gland, and a circumferential projection 7 abutted by a draw nut 21 screwed on the outlet member 17. A closure disc 26 with spaced apertures for the conductors 16 of the cable retains a thermoplastic insulant, introduced through screwhole 28, within the barrel. In Fig. 2 (not shown), the sealing washer 23 of Fig. 1 is replaced by an 0-ring (34), and the flange 7 is replaced by a circlip (32), both being fitted in respective circumferential grooves in the barrel. The cable gland includes a sealing washer 13 and, a draw nut 12 which may be associated with a clamping arrangement for wire armour between cable sheaths, the arrangement including an internally tapered sleeve and an externally tapered nose on the inlet member 9.
Patent GB-1503870-A (GB)
Title: Float-operated electrical switch
IPC: G01F23/56
Filed: 1976-11-11
Abstract: 1503870 Movable magnet float-operated switches ITT INDUSTRIES Inc 11 Nov 1976 [17 Nov 1975] 46975/76 Heading H1N A float-operated magnetic switch has a permanent magnet 78 arranged for pivotal movement towards an armature 64 connected to a float 60 at a point in the armature travel which depends on the force acting against permanent magnet movement as provided by an adjustable spring 80. The permanent magnet is mounted on a pivoted assembly 76 which carries a mercury switch 79. The armature has a non-stick slip washer 68, preferably of polytetrafluoroethylene, to guide it for movement in a tube 34 on which a plurality of units 70, each with a pivoted assembly 76 can be clamped.
Patent GB-1503789-A (GB)
Title: Beam joint
IPC: E04B9/12
Filed: 1976-10-20
Abstract: 1503789 Structural joints METAL SECTIONS Ltd 20 Oct 1976 [15 Nov 1975] 47190/75 Addition to 1468354 Heading F2M The joint disclosed in the parent Specification is modified in that the tongue 13 has projections 19, 23 which are longitudinally spaced such that only the projection 19 acts, by its abutment surface 18, to limit insertion of the tongue in aperture 25 or 29 of the other beam, the other projection 23 having an abutment surface 24 in alignment with the free edge 22 of the resilient integral catch portion 20, so that, as the latter snaps into locking position behind the edge 26 of aperture 25 or 29, guided by engagement of surface 16 of the tongue with inclined edge 27 of the aperture, the surface 24 engages behind the web 11 at the bottom of the aperture. In the event of fire in a suspended ceiling so constructed, this arrangement allows expansion of beam 10 since projection 19 is frangible.
Patent GB-1534094-A (GB)
Title: Solutions which are stable on storage of mixtures curable to cross-linked polyimides
IPC: B32B15/08
Filed: 1976-11-12
Abstract: 1534094 Unsaturated imide prepolymer solutions CIBA-GEIGY AG 12 Nov 1976 [14 Nov 1975] 47246/76 Heading C3R Storage-stable solutions of a curable mixture of an unsaturated imide or amide-acid and a co-reactant, e.g. a polyamine, polyphenol, polyhydric alcohol, polycarboxylic acid, alkenyl phenol, alkenylphenol ether or azomethine, also contain 0À05 to 10 equivalent (per equivalic of imide or amide-acid) of one or more compounds containing a furyl radical. The solutions are useful, inter alia, for the manufacture of copper-coated laminate plates for printed circuits.
Patent GB-1178098-A (GB)
Title: Improvements in or relating to Ceramic Kilns
IPC: F27B9/30
Filed: 1968-10-08
Abstract: 1,178,098. Tunnel kilns. KELLER OFENBAU G.m.b.H. 8 Oct., 1968 [18 April, 1968], No. 47545/68. Heading F4B. A tunnel kiln 1 for firing stacks of bricks 3 mounted on interengaging kiln cars 2, 2a that pass through the kiln firing zone in counterflow to the flue gases, is provided near its charging end with a gas extraction chamber 6, beneath which a space 4 between adjacent brick stacks 3 is located when the kiln cars are in their correct positions for firing to take place. Retractable aprons 9-9c of varying length extend into the space 4 from the chamber 6 so defining parallel gas flow passages 10-10c through each of which flue gases from a different kiln level are extracted. Dampers 11-11c provide for control of the extraction rates at the different levels. The aprons are withdrawn into the chamber 6 every time a new kiln car is loaded in to the furnace and the remaining kiln cars are correspondingly moved along one position. In a modification (Fig. 5, not shown) the gas extraction chambers are located at the sides of the kiln, and the retractable aprons extend transversely across the kiln from them. In a further embodiment, Fig. 7, again with side gas extraction chambers 18 a single apron 17 formed from retractable halves is provided, apertures 19 in the apron halves causing the division of the kiln flue gas flow into separate streams. Such an apertured single apron may alternatively be vertically retractable (Fig. 2, not shown).
Patent GB-1201425-A (GB)
Title: Apparatus for cleaning air
IPC: B01D46/02
Filed: 1968-10-08
Abstract: 1,201,425. Centrifugal separator; air filter. HETAS. 8 Oct., 1968 [18 Oct., 1967], No. 47597/68. Headings B2P and BIT. An apparatus for cleaning air from a place of work comprises a cylindrical chamber 2 having a closed bottom end and provided with a tangential inlet 4 for contaminated air and a tangential outlet 7 for coarse and/or heavy contaminants, the top wall 12 of the chamber having one or more outlets leading to an air filter from which the cleaned air is discharged after removal of the fin and/or light contamiants. The contaminated air is drawn through a pipe 6 by a fan 5 which blows the air through the inlet 4. The filter is in the form of filter sacks 9 removably suspended from a stand 10. A frusto-conical baffle 3 helps in directing the coarse and/or heavy particles downwards towards the outlet 7.
Patent GB-1522638-A (GB)
Title: Mosfet decoding arrangement
IPC: G11C17/12
Filed: 1975-11-19
Abstract: 1522638 Decoders INTERNATIONAL BUSINESS MACHINES CORP 9 Nov 1975 [23 Dec 1974] 47603/75 Heading G4H In a MOSFET memory-address decoding arrangement, an output line from a decoder 10 driven by a plurality of binary address input signals is gated 52, 54 to one of two memory array access lines 74, 76 under control of a further address signal A<SP>11</SP> applied via a pair of inverters 56, 64, each access line having a circuit 82, 84 connected to it to flush parasitic capacitances after access. A plurality of conventional MOSFET decoders 10 are provided for recognizing respective address combinations, the inverters 56, 64 being common to all the decoders 10. The invention permits a more compact integrated circuit layout, matching the pitch between lines like 74, 76 inside and outside the ROS.