baber/WOPTO huggingface dataset:
Patent GB-1497587-A (GB)
Title: Compression of delta coded sequences
IPC: H04B14/06
Filed: 1975-12-11
Abstract: 1497587 Image encoding systems INTERNATIONAL BUSINESS MACHINES CORP 11 Dec 1975 [30 Dec 1974] 50744/75 Heading H4F An encoding system encodes delta-coded bits representing a rectangular array of image points by predicting, for each point in the array, the state of the bit at that point and by generating a 0-bit if the predicted and actual bits are the same and a 1-bit if they differ, the string of generated bits then being run-length encoded. The prediction takes account of the actual bit state of the point preceding that under consideration and of the corresponding two points in the preceding row of the array. The array may be derived from the output of an image scanner. In the embodiments disclosed each delta-coded bit of the array indicates whether the corresponding image point is darker or lighter than the preceding point. The bits pass to a shift register (17, Fig. 1A, not shown) which feeds the predictor (15) with bits xl, x2, x3 from rows i and i-1, the predictor predicting bit x in row i, Fig. 2 (part shown). The predicted x and actual x bits are passed to an exclusive-OR gate to generate the bits to be run-length encoded. In general long runs of 0- bits will be generated. The predictor provides the function A second form of the predictor, which takes account of the bits indicated in Fig. 3 (part shown), provides the function The encoded data is decoded using a run length decoder, exclusive-OR gate, and a predictor corresponding to that used in encoding, Fig. 1B (not shown).
Patent GB-1196318-A (GB)
Title: Improvements in Rotors for Rotorcraft
IPC: B64C27/32
Filed: 1967-11-08
Abstract: 1,196,318. Rotorcraft rotor. BOLKOW G.m.b.H. 8 Nov., 1967 [11 July, 1967], No. 50791/67. Heading B7W. A rigid rotor for a rotorcraft having four blades 9 each rigidly connected to a blade shank sleeve 5 rotatably mounted for pitch change in a bearing sleeve 4 formed on the rotor head 3, each pair of diametrically opposed blades being connected by a laminated torsion bar 10, 18 in the form of a stretched loop, the loop of the bar 10 being in a vertical plane, and the loop of the bar 18 in a horizontal plane and passing through the loop of the bar 8. The laminations may be of steel separated by a low friction layer, e.g. of P.T.F.E. The laminations may comprise either a series of loops side by side (as in bar 18) or a series of concentric loops each encircling the previous one. The torsion bars 10, 18 may be tensioned by disc springs 16, 17, the tension when the rotor is stationary, being adjusted by rotating a nut 14 on a screw 12 which slides without rotating because of a key 13. Cyclic pitch Œ# 2  does not twist the bars 10, 18 as both ends are rotated by the angle, Fig. 3 (not shown). However the collective pitch + # 3  twists the bars by 2# 3  as the ends are both rotated by # 3  but in opposite directions. To minimize the maximum twist of the blades, the bars may be given a present twist of # 1  = ¢# 3  at zero pitch angle, resulting in the bar twist being Œ 2 # 1  = Œ# 3  for the collective pitch range from zero to + # 3 . The insulation of 1,190,259 is acknowledged as prior art.
Patent GB-1493296-A (GB)
Title: Loudspeaker assembly
IPC: H04R7/22
Filed: 1975-12-11
Abstract: 1493296 Loud-speaker diaphragms SANSUI ELECTRIC CO Ltd 11 Dec 1975 [11 Dec 1974] 50847/75 Heading H4J A loud-speaker diaphragm 14 has an outer edge portion resiliently connected to an inner peripheral portion of an annular member 13 mounted on the end of the loud-speaker frame 11 by a plurality of corrugated positional elements 14a which permit the formation of a substantially uniform gap 19 (e.g. about 0À5 mm. wide) between the diaphragm 14 and annular member 13. A material 20 such as silicon rubber having high internal damping also connects the outer edge portion of the diaphragm 14 to the annular member 13. The positioning elements 14a are preferably placed at 90 degree intervals and are covered with the material 20. As shown in Fig. 3 the positioning elements 14a are adhered to the front of the annular member 13. Alternatively they are fixed to the rear of annular member (Fig. 4, not shown). They may be formed integrally with the diaphragm 14 or may be separate cloth pieces adhered to the diaphragm 14. As shown the diaphragm 14 is conical but it may be a dome diaphragm (not shown). The conical diaphragm 14 has an annular damping spider (15) Fig. 2 (not shown) at its small end and this small end is connected to a voice coil former, the loudspeaker being of moving coil type.
Patent GB-511506-A (GB)
Abstract: 511,506. Screw fans. BARBAROU, M. J. B. Feb. 18, 1938, No. 5082. Convention date, Feb. 19, 1937. [Class 110 (i)] [Also in Group XXVII] A fan 15, supplying cooling air to the cylinders of a radialcylinder two-stroke internalcombustion engine, carries, on a peripheral rim, helical blades rotating in a volute chamber 16 connected by pipes 19 to the cylinder exhaust ports, and thereby scavenges the cylinders by drawing out the exhaust gases. The fan is driven from the airscrew shaft 9 through epicyclic gearing.
Patent GB-1320965-A (GB)
Title: Phosphoric acid esters for combating pests
IPC: C07F9/113
Filed: 1970-10-29
Abstract: 1320965 Halovinyl phosphoric acid esters CIBA-GEIGY AG 29 Oct 1970 [29 Oct 1969] 51461/70 Heading C2P The invention comprises compounds of the Formula I where R 1  and R 2  are C 1-4  alkyl, Y is hydrogen, chlorine or bromine, Hal is F, Br or Cl and R 3 , when Y is chlorine, is C 1-6  alkyl substituted by at least 2 CL atoms or by one or more F or Br atoms, or, when Y is hydrogen or bromine, R 3  is C 1-6  alkyl which may be substituted by one or more F, Br or Cl atoms. The compounds of Formula I may be prepared by reacting a trialkyl phosphite of the Formula III where R<SP>1</SP> is C 1-6  alkyl with a dihaloacetic or trihaloacetic aoid-R 3 -ester. The compounds of Formula I may be used as pesticides, especially insecticides or acaricides, either alone or in combination with a suitable carrier and/or further additives, including further biocidal compounds.
Patent GB-1519779-A (GB)
Title: Apparatus for control of equipment via a single transmissions path
IPC: G08C19/28
Filed: 1976-03-02
Abstract: 1519779 Signal transmission system; acoustic remote control A W BUTLER 2 March 1976 [3 Dec 1974] 52153/74 Headings G4H and G4F Apparatus for control of equipment via a single transmission path includes (i) a transmitter comprising a clock 4, a shift register 3 and logic 8-21 which convert a parallel binary signal 2 into a serial signal 18 wherein each 1 (0) bit in signal 2 is represented by a pulse of duration greater (less) than half the period of clock 4, and (ii) a receiver comprising a shift register 22 to which signals 18 are applied under the control of a monostable 24 which produces an output sampling pulse of length equal to half the period of clock 4. As described, the pulses 5 from clock 4 have a mark/space ratio of 1 : 2. When there is data 2 to be transmitted, a signal 9 from interface 8 places a 1 in the last stage of register 3, the output 14 from which sets flip flop 10 and enables gate 17; output 11 from flip flop 10 enables register 3 and AND gate 21. Each O level from clock 4 triggers a monostable 19 having a 1 : 2 mark/space ratio. Thus gate 21 is enabled once (by clock 4) for a O output from register 22 and twice (by clock 4 and monostable 19) for a 1 output. Therefore, signal 18 consists of the initial 1 signal, followed by encoded 0 and 1 signals, followed by 0 signals. In an alternative embodiment, flip flop 10 may be omitted. In the receiver, a gate 23 is enabled by the 0 output from register 22 until the initial 1 signal reaches the last stage. Monostable 29 is triggered on the rising edge of each pulse 19 and its falling edge enters the pulse into register 22 (i.e. the pulse length is sampled and stored). A clear signal 28 is applied to register 22, until the first pulse of signal 18 is received, by a retriggerable monostable 24 of period greater than that of clock 4. The data eventually stored in register 22 is removed in parallel 33 and applied to an interface 36.
Patent GB-1383070-A (GB)
Title: Hydrodynamic sections
IPC: B64C3/14
Filed: 1972-11-13
Abstract: 1383070 Hydrofoils BOEING CO 13 Nov 1972 [13 Dec 1971] 52399/72 Heading B7A A hydrofoil has an upper surface contoured such that a negative pressure zone forms over the upper surface when the hydrofoil moves through a liquid. The negative pressure zone includes a linked portion rearwardly disposed along the surface with respect to the direction of travel for stabilizing the boundary layer to prevent liquid separation, the negative pressure of the kinked portion being relatively lower than the negative pressure of the other portions of the negative pressure zone formed over the upper surface. The lower surface is contoured such that a positive pressure zone forms over the lower surface when the hydrofoil is moved through the liquid, the positive pressure zone including a kinked portion rearwardly disposed along the lower surface with respect to the direction of travel the positive pressure of the kinked portion being relatively lower than the positive pressure of the other portions of the positive pressure zone formed over the lower surface. The upper and lower surfaces join to form leading edge 20 and trailing edge 28 such that a positive pressure zone forms at the leading edge stagnation region 21 and at the trailing edge stagnation region 26.
Patent GB-1374179-A (GB)
Title: Magnetic tape recording and or reproducing apparatus
IPC: G11B15/18
Filed: 1972-11-15
Abstract: 1374179 Controlling tape recorders SONY CORP 15 Nov 1972 [18 Nov 1971] 52817/72 Heading G5R A pause control which temporarily stops the feeding of a magnetic record tape is released in response to the restarting of the tape-drive motor by a timer. As shown, Fig. 1, a pause lever 9 on being moved to the position shown in full lines pushes a slide 12, which withdraws a pinch roller 7 from a capstan 2 and tape 8 and changes over a switch 33 to stop the drive motor M, the slide 12 being latched by a pin 18 on a lever 16. At a predetermined time a timer T, Fig. 2, closes contacts 35 to restart the motor M so that a motor-driven cam 24 causes a linkage 26, 29 to withdraw the latching lever 16, allowing the slide 12 to return to its inoperative position and the tape-feed to be resumed.
Patent GB-1391139-A (GB)
Title: Berbine derivatives and a process for producing the same
IPC: C07D455/03
Filed: 1973-11-14
Abstract: 1391139 Berbine derivatives NIPPON CHEMIPHAR CO Ltd 14 Nov 1973 [20 Nov 1972] 52897/73 Heading C2C Novel compounds of Formula I in which R 1  = C 1-4  alkoxy R 2  = C 1-4  alkyl, pyridyl, or phenyl or phenylvinyl substituted in the benzene ring by 2 or 3 C 1-4  alkoxy groups, are prepared by reacting compounds of Formula II with carboxylic acids of formula R 2 COOH or with reactive derivatives of such acids, preferably in a solvent. Compounds I may be converted to the corresponding methiodides for purification purposes. Compounds I have analgesic, vasodilating and hypotensive activity.
Patent GB-1081460-A (GB)
Title: Refrigerated display case
IPC: F25D23/00
Filed: 1965-12-14
Abstract: 1,081,460. Refrigerators. EMHART CORPORATION. Dec. 14, 1965 [Jan. 7, 1965], No. 53004/65. Heading F4H. An open-topped refrigerated display case comprises an evaporator 38 and fan 44 located in a well 34 in the bottom wall of the case, a machinery compartment 40 having a front closure plate 64 and containing a compressor 46 and a water-cooled condenser 48, and water supply and return pipes 58, 60 extending along the front of the case behind plate 64. Pipes 58, 60 have connections 54, 56 including valves 70 to the condenser and may be connected, via couplings 78, to the pipes of other display cases. The pipes may be connected in a closed circuit containing a water cooling coil or tower (Fig. 7, not shown) or to the water mains. A fan is preferably provided in compartment 40 to circulate air over the compressor and condenser, the resultant warm air being passed through louvres in panel 64 to the front of the case and rearwardly beneath the bottom wall of the case. The case is supported on frame members 28, 30, 32 and 20, the latter having apertures 100 to permit airflow therethrough.
Patent GB-1224809-A (GB)
Title: Improvements in controlling mechanisms for sliding windows
Inventor: BUNCE ANTHONY
IPC: E05D13/00
Filed: 1968-11-08
Abstract: 1,224,809. Window control mechanism. TENSATOR Ltd. 21 Oct., 1969 [8 Nov., 1968], No. 53106/68. Addition to 828,358. Heading E2M. A vehicle door window has a pane 10 which slides vertically between conventional seals 13, 14, and which is held in a raised position by coiled spring 15 which is secured by rivet 19 to the door. The H-section mounting 17, moulded from plastics material, grips pane 10 with channel 23, and straddles spring 15 with channel 22 to retain the spring beneath the pane. Mounting 17 may be formed from extruded section. Two or more springs 15 may be used, in combination with seperate mountings or a single mounting.
Patent GB-1240555-A (GB)
Title: Desk appointment calendar
Inventor: PRATT ROBERT WINTHROP
IPC: B42D19/00
Filed: 1968-11-08
Abstract: 1,240,555. Autographic registers. R. W. PRATT. 8 Nov., 1968, No. 53142/68. Heading B6A. [Also in Division G3] A desk calendar comprises a base 10, a removable unit 25 including a platen 26 and a pair of rotatable reels 31, 36, and a web 35 extending across the upper surface of the platen with the ends of the web attached to the reels. A gearwheel 49 is secured to a shaft 45 mounted in the side wall 12 of the base and meshes with a pair of gears 56, (57), Fig. 5 (not shown), mounted on ears 54, (55) protruding from a disc 52 freely rotatable on the shaft 45. Rotation of a knob 46 in one direction causes the gear 49 to move the gear 56 into engagement with a gear 33 secured to one end of the reel 36. Further rotation of the knob causes the reel 36 to move the web which is marked with the days of the year and divided into areas for writing notes, over the platen. Rotation of the knob in the other direction moves the gear 56 out of mesh with the gear 33 and moves the gear (57) into mesh with a gear (38) secured to the end of the reel 31, thus enabling the moving of the web in the opposite direction. To remove the unit 25, the knob 46 is pulled outwardly against the resistance of a spring 53, thus moving the gears out of mesh and enabling the unit to be lifted from the base. A cover 65 may be pulled over the calendar by means of a handle 66. A guide 67 positions the cover in the base when the cover is retracted. A spring 40 supplies tension to the web.
Patent GB-1065470-A (GB)
Title: Foldable litter structure
IPC: A61G1/013
Filed: 1965-12-16
Abstract: 1,065,470. Foldable litter. RESEARCH MANUFACTURING Inc. Dec. 16,1965 [Dec. 16, 1964], No. 53424/65. Heading A5X. A foldable litter comprises foldable frame-forming sections and patient-supporting means foldable with said sections, certain of said sections having rigid cross ties pivotally connecting the side rails of the sections and providing for turning movement of the rails about the longitudinal axes of the rails, the litter being characterized in that the hinge means connecting the side rails have lineal hinge pins with their axes in perpendicular relation to the longitudinal axes of the rails whereby, when the hinges and rails are turned about the longitudinal axes of the rails, there occurs a first position in which the sections may be folded and a second position in which the sections are locked against folding movement. The litter is illustrated with reference to drawings wherein Fig. 1 (not shown) shows the folded condition, Fig. 2 (not shown) shows the extended but unlocked condition and Fig. 3 shows the extended and locked condition, and wherein numerals 14 indicate hinges and 25 the hinge pins thereof.
Patent GB-1370378-A (GB)
Title: Production of foam plastics bodies
IPC: B29C44/58
Filed: 1971-11-18
Abstract: 1370378 Moulding foamed articles BAYER AG 18 Nov 1971 [18 Nov 1970] 53532/71 Heading B5A [Also in Division C3] In a method of producing foamed plastics articles, the mould, after having been filled with liquid foamable reactants, is acted upon externally, and at least partially sealed, by a fluid medium under a pressure of at least 0À2 kg./cm.<SP>2</SP> above the foaming pressure inside the mould at a given moment. Using the apparatus shown in Fig. 1, a mould 3 is placed inside a pressure vessel 1, and is evacuated through pipe 18, the pressure registering device 19 associated with the mould interior electronically activating the drive means for evacuating the pressure vessel until the pressure registering means 28 associated with the pressure vessel shows a pressure of about 0À3 atm. above that in the mould; the mould is then filled with liquid foamable reactants through pipe 13, and, as the foaming pressure increases, the pressure outside the mould is increased by feeding pressurized fluid from a reservoir 40 into the pressure vessel 1, the pressure being electronically controlled in relation to the readings on the pressure registering means 19, 28. Using this method obviates the need for heavy duty moulds needed to withstand high foaming pressures. In a further embodiment (Fig. 2, not shown) the pressure is controlled by an experimentally determined programme.
Patent GB-1417845-A (GB)
Title: Coding keyboard
IPC: H04L13/16
Filed: 1972-11-20
Abstract: 1417845 Keyboard switch SOC D'APPLICATIONS GENERALES D'ELECTRICITE ET DE MECANIQUE 20 Nov 1972 [30 Dec 1971] 53565/72 Heading H1N [Also in Division B6] A keyboard comprises a central metal plate 1, a lower plate 15 which is a printed circuit and an upper plate 17 forming a cover. The central plate 1 has holes (2, Fig. 1) in which are inserted push button guides 3. When a key button 22 is depressed, a magnet 13 fixed to the stem of the button controls the closing of a blade contact unit 16 fixed to the upper face of the printed circuit 15. The central metal plate 1 acts as a shunt plate which prevents the magnet 13 effecting the units 16 when key buttons are in the non-depressed position.
Patent GB-1269247-A (GB)
Title: Improved joint construction
IPC: E04B1/343
Filed: 1969-11-03
Abstract: 1,269,247. Containers. GOODYEAR AEROSPACE CORP. 3 Nov., 1969 [29 Nov., 1968], No. 53829/69. Heading B8P. [Also in Division E1] In a joint between a pair of corrugated 12, 14, the edge of one sheet 12 is bevelled to an angle equal to half the angle between the sheets and carries a continuous flange 20 which is fastened to the other sheet. In Fig. 1, both sheets are bevelled and flange 20 is of uniform height. In Fig. 4 (not shown) the edge (44a) of the flange (44) is planar as is the edge (48) of the other sheet (42). Flanges may be provided on both sheets.
Patent GB-1263116-A (GB)
Title: Chloramphenicol and thiamphenicol derivatives
IPC: C07D213/61
Filed: 1969-11-03
Abstract: 1,263,116. Chloramphenicol and thiamphenicol derivatives. SUMITOMO CHEMICAL CO. Ltd. 3 Nov., 1969 [2 Nov., 1968; 2 Sept., 1969], No. 53886/69. Heading C2C. Novel chloramphenicol and thiamphenicol derivatives of the formula  wherein A is NO 2  or CH 3 SO 2 , X is halogen, each of R<SP>1</SP>, R<SP>2</SP> and R<SP>3</SP> is H, C 1-4  alkyl, C 2-4  alkenyl, C 1-4  alkoxy, C 2-4  alkoxycarbonyl, or halogen, and R<SP>4</SP> is H, C 1-4  alkyl or aryl are prepared by reacting the appropriate α-halocarboxylic acid esters of chloramphenicol or thiamphenicol with the corresponding pyridine derivatives. Pharmaceutical compositions, suitable for parenteral administration and having antibacterial activity, contain the above novel compounds and pharmaceutically acceptable carriers or diluents.
Patent GB-1096989-A (GB)
Title: Fluid separator
Inventor: ZANKEY HARRY ENRICO
IPC: B01D53/26
Filed: 1966-12-02
Abstract: 1,096,989. Removing oil vapour and droplets from gas. McGRAW-EDISON CO. Dec. 2, 1966, No. 54008/66. Headings B1L and B1T. Gas with entrained oil in vapour and particle form passes from inlet 16 through an array of coalescing units 22, mounted on conduits 25 extending from dividing plate 17, and subsequently passes inwards through active alumina or active carbon adsorbent 38 to outlet 14. A preliminary filter 49 may remove solid particles. Units 22 (Figs. 2, 3 not shown) comprise elements 27 of sintered metal or cellulose enclosed in Neoprene cups 26 mounted in overlapping fashion on conduits 25 of different lengths. Elements 27 have pores below 1 micron and coalesce oil into large drops which run from conduits 25 or are thrown on to the wall of vessel 11 as the gas flows radially outwards across the top of unit 23, which adsorbs the oil vapour. The adsorbent 38 is packed between perforate concentric metal screens 36, 37 and end caps 40. The lower end cap rests on annular support plate 44 to leave a sump around the outlet conduit 14, from which accumulated oil is withdrawn by line 46.
Patent GB-1385680-A (GB)
Title: Apparatus and method for the study of a polyphase medium
IPC: E21B47/10
Filed: 1971-11-22
Abstract: 1385680 Electro-physical measurements SCHLUMBERGER INLAND SERVICES Inc 22 Nov 1971 [20 Nov 1970] 54075/71 Heading GIN [Also in division E1] The volumes of two immuscible liquids which separate under gravity, for example a sample from the fluid at the bottom of an oil well, are measured in the sonde 20. The sonde consists of a central column 21 surrounded by a tube 24 to provide a phase segregation chamber 25. The ends of this chamber open into widened siphon ports 22 and 23 which give limited but continuous communication with the fluid stream. The chamber 25 constitutes the inter electrode space of a capacitor sensor with the metal tube 24 and insulated metallic sleeve 32 forming the electrodes. This capacitor varies the frequency of an R.C. oscillator 35. Calibration capacitors 39 and 39' allow the responses of the senser to the individual phases to be measured. A statory capacitor is described as well as a method of filling the sonde with one phase at a time and measuring capacity.
Patent GB-1386789-A (GB)
Title: Photoresponsive articles
IPC: G03C1/28
Filed: 1971-11-22
Abstract: 1386789 Silver halide materials; diffusion transfer POLAROID CORP 22 Nov 1971 54196/71 Heading G2C A photo-sensitive article comprises silver halide crystals and, in electron-donating relationship with the crystals a sensitizing dye and an inorganic semiconductor capable of donating electrons to the crystals as a function of incident electromagnetic radiation. The dye is preferably an optical sensitizing cyanine dye and the semi-conductor is orthorhombic PbO, TeO 2 , Ge, AlSb, ZnSe, AlAs, GaAs, InAs, InP, GaP, GaSb, Sn, Si, Ge or SnS. The article is preferably a silver halide emulsion which may be the light; sensitive element for a silver-halide diffusion transfer process.
Patent GB-1273278-A (GB)
Title: Process for the separation of binary mixtures
IPC: C07C201/16
Filed: 1969-11-07
Abstract: 1,273,278. Separation of binary mixtures. FARBWERKE HOECHST A.G. 7 Nov., 1969 [7 Nov., 1968], No. 54707/69. Heading C2C. Components of a binary mixture (except a binary mixture forming mixed crystals and/or congruently or incongruently melting solid phases) having a minimum melting point in the range -100 to +150‹ C. and a composition falling between the extrapolated branches of the melting point curve, are separated by inoculating an homogeneous melt of the binary mixture with crystals of one of the components at a temperature which is in the range of from 0À05 to 15‹ C. below the eutectic temperature, allowing this component to selectively crystallize until the melt contains substantially less of this component than the eutectic mixture and separating the crystals from the melt. In examples (1) ortho and para chloronitrobenzene are separated from each other and (2) enantiomers of a #-lactam of formula where R 1  is alkyl C 1-5 , vinyl or phenyl, R 2  and R 3  are each hydrogen, methyl or together form an alkylene C 3-5  ring with the proviso that if R 1 =R 2 , R 3  is not hydrogen are separated from the racemic mixture.