baber/WOPTO huggingface dataset:
Patent GB-1173920-A (GB)
Title: Self-Propelled Harvester-Thresher Built up from a Conventional Tractor and Harvesting and Threshing Means
Inventor: BOBARD EMILE
IPC: A01D41/04
Filed: 1966-12-23
Abstract: 1,173,920. Combine-harvesters. E. BOBARD. 23 Dec., 1966 [30 Dec., 1965; 21 July, 1966], No.57775/66. Heading AlF. A self-propelled combine-harvester is formed by the combination of a conventional four-wheeled tractor with a harvester-thresher unit having a threshing device 110, a straw-rack 108 with an underlying conveyer 109 for the separated grain, a grain cleaner 113, and a grain tank 119, and a header M, the unit having struts 111 which rest upon the rear half-axles of the tractor, so that the unit is mounted symmetrically upon the longitudinal median plane of the tractor with the header at the usual rear end of the tractor, which is then driven in reverse, means being provided for connecting the tractor power-take-off to the moving parts on the unit, and for remotely controlling the steering of the machine from a drivers seat 114 on the unit, the stearable wheels 114, being either those of the tractor, or, where these have been removed, a pair on the unit (Fig. 2, not shown). In various modifications the cleaning unit 113 is mounted either above or beside the grain-tank 119 or straddling the tractor engine. When required for other work, the tractor may be removed from the unit and restored to normal use.
Patent GB-1139706-A (GB)
Title: Shield for cathode ray tube
IPC: H01J29/06
Filed: 1966-12-29
Abstract: 1,139,706. Cathode ray tubes. NATIONAL VIDEO CORP. 29 Dec., 1966 [18 Jan., 1966], No. 58074/66. Heading H1D. A colour TV tube comprises a glass funnel 10 and a glass dish-shaped face plate 14 within which is mounted a mask assembly 11 and a thin conductive foil scanning shield 13 e.g. of Al the periphery 40 of which is clamped between the assembly and funnel. The mask assembly comprises a mask 12 supported by an annular frame 30 of L-shaped cross-section. The assembly is supported by spring members 36, 37 (35), Fig. 3 (not shown), which snap on to projections in the face plate. The funnel walls are coated with a carbon containing conductive coating (10a), Fig. 9 (not shown), which is connected to the assembly by a spring (36) passing through the shield.
Patent GB-1213466-A (GB)
Title: Improvements relating to protective sleeves for torque-transmission shafts in agricultural machines
IPC: A01B71/08
Filed: 1967-12-22
Abstract: 1,213,466. Machinery guards; bearings. JEAN WALTERSCHEID K.G. 22 Dec., 1967 [2 Jan., 1967], No. 58458/67. Headings F2A and F2J.  A non-rotary protective sleeve for universally jointed shafts of an agricultural machine, comprising at least two relatively movable telescopic tubes for enclosing the shafts, at least one of the tubes 1 having an enlarged, open-ended terminal member 2 for covering a shaft joint, is rotatably mounted on a cylinderical member 3 of the joint by bearing balls 5 running in a circumferential groove 4 in the member 3, the balls 5 being retained against radially outward displacement by an axially movable bearing ring 6 which is axially located in the member 2 either by resilient means or by positive locking means. As shown, a resilient annular fitting 7 connects the member 2 to the tube 1 and has tabs 7<SP>1</SP>, 7<SP>11</SP> between which the bearing ring 6 and a guide ring 8 are held. To prevent their rotation, the tabs 7<SP>1</SP> engage recesses 6<SP>111</SP> of lugs 6<SP>1</SP> on the ring 6, and a nose on the ring 7 engages one of four notches (11) in the guide ring 8. A retaining ring 9 has a lug 9<SP>1</SP> projecting through an opening 12 in the ring 7 for attachment to a conventional safety chain. A cage 10 guides the balls 5. To remove the sleeve, tabs 7<SP>1</SP> are raised, e.g. with a screwdriver, and the bearing ring 6 moved axially until the tabs 7<SP>1</SP> engage recesses 6<SP>11</SP> in the lugs 61 (Figs. 5, 6, not shown). The balls 5 can then move radially outwards from the groove 4, so that the sleeve can be slidden relative to the shaft. In a modification, the ring 7 is rigid and has withdrawable locking members to engage either side of the ring 6. Alternatively a separate rigid locking ring with withdrawable members may be used.
Patent GB-1210930-A (GB)
Title: Laser interferometer
Inventor: ERICKSON KENT E
IPC: G01B9/02
Filed: 1967-12-22
Abstract: 1210930 Polarizing interoferometers KEUFFE] & ESSER CO 22 Dec 1967 [30 Dec 1966] 58514/67 Headings G4H H1C H3X H5D H6A H6B H6D H6E H7A3 H7A4 H7B H8E H14A H14B and H14D Light from a coherent source such as a laser 1, Fig. 1, is passed through a cover glass 19 and halfwave plate 21 to impinge on a multi-layer beam splitter 27 so that a measuring beam 13 and reference beam 15 having different planes of polarization are provided. The beam 15 is passed through a quarter-wave plate 23 and lens 22 to be returned by fixed mirror 24 and pass through beam splitter 27, whilst beam 13 is passed through quarter-wave plate 29, is expanded in diameter by telescope 5 overcome lateral misalignment of carriage 7, is focused by lens 18 on the mirror 20 and then returned to be reflected by splitter 27, the lens 18 and mirror 20 being mounted for movement on the carriage 7. The recombined beams are passed through a quarter-wave plate 25 to a detector assembly 11 having a pair of polarizing beam splitters 39, (34) Fig.2, (not shown) and a plane polarizer 38 so that three photo-electric detectors 33, 35, 37, such as silicon diodes, receive light of varying polarization. The outputs from detectors 33, 35, respectively are subtracted from that of detector 37 so that D.C. components corresponding to a mismatch between the intensities of beams 13, 15, are eliminated and the resulting signals are fed to a reversible electronic counter. In a modification, Fig.4 (not shown) a dual pass interferometer is provided by inserting a movable cubecorner reflector (41) into the measuring beam and providing a fixed reflector (45) and corrective wedges (47). By inserting a beam splitter unit in the measuring beam 13 of Fig.1, a portion of the beam may be diverted for measuring movement in two co-ordinate directions.
Patent GB-1419068-A (GB)
Title: Glass ceramics
IPC: C03C10/08
Filed: 1971-12-17
Abstract: 1419068 Glass ceramics TRADE & INDUSTRY SECRETARY OF STATE FOR 15 Dec 1972 [17 Dec 1971] 58629/71 Heading C1M A glass ceramic material having a lifetime at 1100‹ C. of at least 20 hours to 0À2% strain and/ or at least 60 hours to 0À3% strain under a bend stress of 77 MN/m.<SP>2</SP> is formed from a composition comprising, by weight, 40-55% SiO 2 , 25- 37% Al 2 O 3 , 8-15% MgO, 0-5% ZnO, 4-14% TiO 2 , 0-10% ZrO 2 , not greater than 0À15% CaO, not greater than 0À2% Na 2 O, not greater than 0À3% K 2 O, and not greater than 0À2% Li 2 O, wherein the total amount of CaO, Na 2 O, K 2 O and Li 2 O is not greater than 0À3%, the balance, if any, consisting of other compatible ingredients. These levels of alkali metal and calcium are low compared with what is normal in the constituent raw materials and accordingly it is necessary in the production of the glass ceramics to use raw materials which permit the overall concentration of alkali metal and calcium (in the products) to fall within the stated limits. The glass ceramic may optionally contain Fe 2 O 3 , Cr 2 O 3 , WO 3 , CeO 2  or ThO 2 . A typical heat treatment used for producing the glass ceramic is to heat at 800‹ C. for 4 hours, raise the temperature at 4‹ C./min. to 1040‹ C., then raise the temperature at 1À5‹ C./min. to 1280‹ C., and finally to hold at that temperature for 1 hour. Numerous examples of specific glass ceramic materials are disclosed. Comparative examples disclose compositions containing, in per cent by weight, 0À4% Na 2 O, 0À4% K 2 O, 0À2% CaO and 0À35% CaO.
Patent GB-1408649-A (GB)
Title: Process for the preparation of halogen-carrying rubberlike copolymers
IPC: C08F8/22
Filed: 1972-12-21
Abstract: 1408649 Halogenated olefin terpolymer rubbers STAMICARBON BV 21 Dec 1972 [23 Dec 1971] 58990/72 Heading C3P Halogenated rubbery copolymers of ethylene, at least one other alkene-1, dicyclopentadiene and optionally one or more other polyenes, and containing 0-5 to 5 weight per cent halogen at least 0À35 weight per cent being allylic in the dicyclopentadiene units, may be prepared by halogenating the copolymers in the solid state with molecular halogen at a temperature of -30‹ to + 80‹ C. The copolymer may contain propylene and/or butene-1, and may be in the form of plates, sheets, strands or crumb, or may be dispersed in a non-solvent liquid, e.g. water. The halogen may be chlorine, bromine or a mixture thereof. The products may be mixed with fillers and pigments, and conventional vulcanizing ingredients, optionally together with high unsaturation rubbers, and used in the manufacture of tyres; or may be used for imparting impact resistance to polyethylene, polypropylene, polystyrene or polyvinyl chloride, in bitumen emulsions or as bases for graft polymerization. In examples ethylene/propylene/ dicyclopentadiene copolymers in crumb form are reacted with chlorine in (1) dry state, (2) aqueous dispersion and (3) moist state, and product (1) is covulcanized with styrene/ butadiene rubber.
Patent GB-1421760-A (GB)
Title: Papers
IPC: D21H19/20
Filed: 1972-12-22
Abstract: 1421760 Polymer-coated paper PAPIERWERKE WALDHOF-ASCHAFFENBURG AG 22 Dec 1972 [23 Dec 1971] 59366/72 Heading B2E  At least one surface of paper is melt-deposit coated with a 15 g/m<SP>2</SP> of a coating comprising mutually incompatible synthetic resins or a synthetic resin with either a blowing agent, a filler or a cross-linking agent, the surface of the coating being microporous. The synthetic resin may be one or a mixture of thermoplastic materials such as polyolefins, or may be a mixture of polyolefin (e.g. polyethylene) with polystyrene, p.v.c., polyvinyl acetate, A.B.S. copolymer or cellulose acetate. When a blowing agent is used the melt is deposited unblown, then blown using heated rollers. Suitable fillers are microcrystalline gypsum, clay or clay mixed with TiO 2  or ZnO. The coated paper may be passed, in a finish treatment, through mirror-finished cooling rollers.
Patent GB-1371000-A (GB)
Title: Propoxyphene derivative
IPC: C07D471/04
Filed: 1973-12-22
Abstract: 1371000 Propoxyphene salt WHITEFIN HOLDING SA 22 Dec 1972 [30 Dec 1971] 59411/72 Heading C2C [Also in Division A5] The novel salt of Formula I is prepared by mixing equal parts of d-propoxyphene and rheobromineacetic acid in an anhydrous solvent.
Patent GB-1243078-A (GB)
Title: Production of substituted imidazoles
Filed: 1968-12-16
Abstract: 1,243,078. Substituted imidazoles. BADISCHE ANILIN- & SODA FABRIK A.G. 16 Dec., 1968 [16 Dec., 1967], No. 59644/68. Heading C2C.  Imidazoles of the formula ' ' wherein R<SP>1</SP> ,  R<SP>2</SP> and R<SP>3</SP> are the same or different, and represent H, or an aliphatic, araliphatic cycloaliphatic or aromatic hydrocarbon radical and R<SP>4</SP> represents an aliphatic hydrocarbon radical, or R<SP>1</SP> and R<SP>2</SP> together form a condensed aromatic ring, are obtained: by reacting an imidazole of the formula with a compound of formula where R<SP>5 </SP>represents H or an aliphatic hydrocarbon radical, at a temperature from 200 to 450 C. in the presence of an oxide or phosphate | of a metal or Groups II, III or IV of the Periodic System. Examples are given for the production of the compounds.
Patent GB-1490970-A (GB)
Title: Equalizers
IPC: G10K15/00
Filed: 1973-12-22
Abstract: 1490970 Audio equalizer system DOLBY LABORATORIES Inc 9 Dec 1974 [22 Dec 1973] 59692/73 Heading H4R In an audio equalization system, particularly one which compensates for the build up of lower frequency sounds due to reverberation, an equalizer provides a predetermined equalization characteristic during steady state conditions but the equalization is modified to a second state during an attack in the source signal to provide a reduced degree of equalization from which a transition to the steady state takes place over a predetermined period of time. As described under steady state conditions the equalizer 30, Fig. 4, provides a predetermined amount of treble lift and a bass cut, Fig. 2 (not shown). The second state equalizer 40 preferably provides a flat characteristic. A control circuit including rectifier 44, differentiator 46 and amplifier 48 makes f.e.t. 34 conductive under steady state conditions but when there is an increase in signal level f.e.t. 34 is turned off and f.e.t. 32 turned on so as to bring the flat equalizer 40 into circuit. The differentiator 46 time constant is arranged so that the steady state equalizer is brought back into circuit in a time matched to the growth time of the sound field in the auditorium. In an alternative arrangement, Fig. 5, the frequency spectrum is split into 1/3 octave bands by filters 50 and a control circuit 56 controls the switching between a steady state and a transient value of gain for that frequency band in accordance with the rate of change of the signal components in that frequency band.
Patent GB-1259719-A (GB)
Title: Improvements in and relating to circuit arrangements for polarity reversal of signals
IPC: H03C1/54
Filed: 1969-12-18
Abstract: 1,259,719. Polarity converters; detectors, demodulators. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 18 Dec., 1969 [21 Dec., 1968], No. 61728/69. Heading H3T. [Also in Division G4] A circuit for converting signals from bipolar to monopolar form or vice versa comprises an amplifier 21, 22 or 15 having two negative feedback paths, each including a diode or other switching device 5, 6 or 45, 46, connected to the amplifier input via a resistor 11, 12, the input signals being applied via respective resistors 9, 10 to the two resistor, switching device junctions. The circuit is described as used in the modulator and demodulator of a pulse code modulation system in which speech is transmitted in the form of a polarity indicating pulse followed by a code group representing the rectified signal amplitude. In the speech signal rectifier of Fig. 1 the positive going part of the input-signal 18 causes the amplifier output to go negative causing the feedback path through diode 6 to become effective. This produces a virtual earth at the amplifier input and as resistors 10 and 11 are equal the signal at 17 is of half the input signal amplitude. Negative going parts of the signal render the feedback through diode 5 effective and the signal output at 17 is again of half the input signal amplitude but now of opposite polarity to the input. The resulting monopolar output from 17 is applied via an amplifier 8 to a pulse code modulator 7. The input signal may alternatively be applied via a transformer to points 13 and 14 and a balanced output may be obtained from 16 and 17. The amplifier has a source follower input stage and feedback through a low-pass filter 28- 31 to maintain D.C. stability. Fig. 2 shows the demodulator for the coded signals received at 32. The polarity signal is deleted at 34 and the signal decoded and sampled at 35 to recover the rectified signals at 37. The polarity indicating component is extracted at 38 and used to provide opposite polarity control signals at the output of a bistable circuit 42 which switch the feedback paths of a circuit similar to Fig. 1 but comprising feedback transistors 49, 48 instead of the diodes. The circuit inverts alternate parts of the signal 37 to provide the bipolar signal 48. This is amplified at 49 and applied to a time multiplex distributor 50.
Patent GB-647645-A (GB)
IPC: F28D7/10
Abstract: 647,645. Tubular heat-exchangers. FRENKEL, M. S. May 22,1947, No. 13815. [Class 64(iii)] ] [Also in Group III] A heat-exchanger comprises a casing 1 containing tubes 2 arranged in parallel rows each having an inlet header 8-11 and an outlet header 12-15, the headers of adjacent rows being spaced from one another both transversely to and along the direction of flow of a fluid outside and along the tubes, so that the fluid can enter and leave the spaces both between adjacent rows of tubes and between adjacent tubes in a row, without materially altering its flow direction. As shown, the tubes are arranged in rings, so that the rows and headers are annular. Alternatively, the tubes in a row may be in a straight, curved or zig-zag line. Each tube 2 contains a coaxial inner tube 3.
Patent GB-2005692-A (GB)
Title: Preparation of finely comminuted particles of a polymer
IPC: C08J3/14
Filed: 1978-09-21
Abstract: Finely comminuted particles of an organic thermoplastic polymer are prepared by (1) dissolving the polymer in an excess of a solvent at a temperature above the melting point of the solvent, which solvent is solid at ambient temperature; (2) cooling the solution until it solidifies into a solid friable mass; (3) removing the solvent from the mass preferably by extraction into a second solvent and (4) recovering the polymer in the form of finely comminuted particles. By introducing powders at various stages in the preparation, particles can be prepared having powder dispersed throughout their mass and/or surface coating of powder. This preparation is particularly applicable in the production of toners for electrostatic reproduction purposes.
Patent GB-2019229-A (GB)
Title: Toys
IPC: A63H33/00
Filed: 1978-10-03
Abstract: A toy has a decorative portion 21 which is suspended beneath a motor unit 11 by which it is rotated. The motor unit may also operate a musical box mechanism. The motor unit is supported by an arm 5 which extends upwardly from a base 1 and is shaped so as not to interfere with the rotation of the decoration. The base 1 includes a vice- like clamp 3 for securing the toy to a projecting element 4a which may be provided by a stand 4 or by a piece of furniture. The motor unit may rotate the portion 21 via a slip clutch. <IMAGE>
Patent GB-2008036-A (GB)
Title: Portable drawings suspension filing device
IPC: B42F15/06
Filed: 1978-11-14
Abstract: A trolley for the storage and transportation of drawings of the type having a mounting strip with suspension holes, has at least two parallel drawing suspension rails mounted on a framework (1). Each drawing suspension rail comprises a stationary suspension member formed by a tube (20) engageable with a movable suspension member formed by a bar (27 or 22). A guide means formed by further tubes (25) and guide rods (24) ensures accurate location of the bars (21 and 22) within the tubes (20). <IMAGE>
Patent GB-784473-A (GB)
Abstract: 784,473. Gyroscopic apparatus. BENDIX AVIATION CORPORATION. Dec. 8, 1955 [Dec. 15, 1954], No. 35284/55. Class 97(3) A gyroscope suspended so as to have three degrees of freedom has a spring-mounted element projecting from the outer gimbal to engage yieldingly a retractable strap mounted on the instrument frame so as to prevent the outer gimbal from gathering speed while allowing it to rotate at a limited rate. As shown in Fig. 1, a directional gyroscope comprises a rotor 1 spinning about a horizontal axis and supported in gimbals 3 and 5. The spin axis is maintained horizontal by an erection motor 9 controlled by a pendulous switch 11. A pick-off 13 enables the direction of the axis to be indicated at a distance. A solenoid 17 has a plunger 19 which is retracted against action of a spring 20 when the solenoid is energized When the rotor driving motor, and with it the solenoid 17, is deenergized the plunger 19 is moved upwards, into the path of a spring urged plunger 23 mounted on the gimbal 5. When gimbal 5 rotates the plunger 23 stops the rotation unless the gimbal is moving quickly, in which, case plunger 23 moves inwards against of its spring 25 and rides over the plunger 19. In an alternative, the spring pressed plunger 23 is replaced by a leaf spring.
Patent GB-2011093-A (GB)
Title: A humidity sensor
IPC: G01N27/12
Filed: 1978-11-29
Abstract: The operation of an electrical humidity sensor 10 is based on the capacitance change of an organic polymer film (13). The film is heated to a temperature above the ambient temperature. Heating is achieved either by the passage of measuring current through the polymer film, or by a separate resistance plated onto the sensor substrate 11, or by an external radiation source. Ambient temperature and sensor temperature are measured by temperature sensors 17, 15 and signalled to a circuit 20 which controls input voltage U to the sensor <IMAGE>
Patent GB-2040828-A (GB)
Title: Dinghy
IPC: B63C13/00
Filed: 1979-02-01
Abstract: For transportation on land of a dinghy, the dinghy is constructed so as to be circular and is provided with means in the form of a handle 60 whereby the dinghy can be rolled on its outer peripheral edge after the manner of a wheel. In the illustrated case, the handle 60 comprises a yoke providing a limb 61 carrying pairs 62,63 and 64,65 of throated rollers into which the outer structure 10 of the dinghy fits at two substantially diametrically-opposed locations. An alternative form of the handle arrangement may, for instance, comprise a spider having spokes which engage with the inner periphery or outer periphery of the dinghy. The handle may be adapted for fastening to a vehicle's towing hitch to enable it to be towed. <IMAGE>
Patent GB-2016221-A (GB)
Title: Electronic flash device
IPC: H05B41/32
Filed: 1979-03-05
Abstract: In an electronic flash device in or for a camera unnecessarily rapid battery discharge is avoided by arranging for switching means controlling charging of a flash initiation capacitor 9 to terminate such charging in response to the capacitor charge attaining a required level. In a preferred device the switching means comprises a relay formed by a supply switch S1, S2 and an electromagnetic 4, operation of the electromagnetic being controlled in dependence upon the capacitor voltage. The switching means may be operative also to control an illumination test circuit, known per se, including a photoelectric element 2, in which case capacitor charging may be made dependent upon the resistance value of the photoelectric element. <IMAGE>
Patent GB-2059430-A (GB)
Title: A hot melt thermo-plastic road- marking compound
IPC: E01C23/22
Filed: 1979-04-23
Abstract: The invention provides a hot melt thermoplastic road-marking composition which consists of the following components: (1) 7 to 38 weight percent of a synthetic hard resin, (2) 1 to 10 weight percent of a plasticizer, (3) 0 to 10 weight percent of an elastomer, (4) 1 to 15 weight percent of pigments, (5) 0 to 35 weight percent of glass beads, (6) 10 to 50 weight percent of a mineral aggregate, (7) 10 to 50 weight percent of an extender and (8) 0 to 5 weight percent of a stabilizer. The compositions are particularly readily applied and of high durability.
Patent GB-2025351-A (GB)
Title: Mine-shaft hoisting means
IPC: B66B15/08
Filed: 1979-05-24
Abstract: A mine-shaft hoisting means, includes two haulage ropes 1, 10, each with a rope carrier consisting, for example, of a reel or drum. Each of the rope carriers is mounted on one of two interconnected shafts 12, 13, the two shafts either having a common drive or, as illustrated, each shaft having a separate drive provided by a motor 2 and gearing 3. In the case illustrated, the shafts 12 and 13 are connected together by a universal joint 4, the deflection capacity of which is variable with a given fixed distance between the shafts 12, 13 and the mine-shaft, in order to obtain the desired distance between the rope falls in the mine-shaft. In the case in which there is a common drive, each rope carrier shaft has a universal joint incorporated therein. <IMAGE>
Patent GB-2044778-A (GB)
Title: Thermoplastic moulding compositions
IPC: C08L25/04
Filed: 1979-06-11
Abstract: A thermoplastic moulding composition for moulding components intended for use in aqueous environments comprises a major proportion of a thermoplastic styrene- based polymeric material having dispersed therein at least 5% by weight of PTFE particles. Such compositions are of particular utility for moulding movable components, e.g. pistons of flow meters.