baber/WOPTO huggingface dataset:
Patent GB-1534283-A (GB)
Title: Mining machine
IPC: E21C27/22
Filed: 1975-11-18
Abstract: 1534283 Mineral-mining machines DOSCO OVERSEAS ENG Ltd 18 Nov 1976 [18 Nov 1975] 47440/75 Heading E1F The drive mechanism for rotating a cutting tool 18 relative to a boom by which it is supported ahead of the forwardly advanceable body of the machine includes a multispeed gearbox whereby the cutting tool may be selectively driven at two or more different cutting speeds. Preferably said gear box is incorporated in the boom, is a two speed gearbox, and includes a gear selector lever 50 movable between operating positions corresponding to respective ones of the cutting speeds of the gearbox and means operable by a key for locking the said lever in the operating positions, the key also operating a lock in the control means of the motor, this lock being such that the motor must stop when the key is removed from the lock to operate the locking means associated with the gear selector lever so that a gear change may be made.
Patent GB-1314786-A (GB)
Title: Data sensing system
IPC: G06K7/12
Filed: 1971-10-14
Abstract: 1314786 Photo-electric read-out NATIONAL CASH REGISTER CO 14 Oct 1971 [29 Oct 1970] 47840/71 Heading G1A [Also in Division G4] Radiation beams of different frequency ranges from separate sources e. g. a red beam and an infrared beam are projected alternately on to an area on which information is carried in code form by areas the reflectivity which varies from area to area, in a discrete manner, and is necessarily different for the two kinds of radiation in at least one area. In an exemplified system using white, green and black bars and wherein some transitions W-B, B-G, G-W are indicative of binary 1 and reverse transitions are indicative of binary 0 the separate colours are identified by their reflections of the two kinds of radiation white reflecting both, black absorbing both, and green reflecting the infrared preferentially. The sources of 1R and R which may be gallium arenide and gallium arsenide phosphide diodes respectively are pulsed alternately and the output of a photo-detector responsive to the reflected light is sampled and held at mid-pulse periods, the level, and a comparison of the two samples indicating whether white, black, or green is being viewed and producing an output on a corresponding line. A reading pen construction is described in which the radiation beams produced correspond in width to the code bars, and false signals which might arise when the beam straddles a pair of colour boundaries, are inhibited in the circuitry described.
Patent GB-1157740-A (GB)
Title: Photographic Cassette Loading and Unloading Machine
Inventor: MUNNICH KARL
IPC: G03B17/26
Filed: 1967-10-24
Abstract: 1, 157, 740. Loading and unloading cassettes. EUROGRAPH GESELLSCHAFT FUR PHOTOMECHANIK. Oct. 24, 1967, No.48247/67. Heading G2A. A light-tight housing 1 is used for loading a cassette 4 in one position, and unloading it in another position. As shown, the cassette, after being inserted into the housing in a horizontal position through a slot in the housing wall, is located on a holder 3 which can turn about a horizontal pivot 2. On turning into the inclined position shown in full lines, by means of a crank outside the housing, the cassette is ready for loading. Its movement is limited by an abutment 13, and pivoted abutment arms 22 engage with abutments 23 on the upper part of the cassette to displace it slightly. This causes a gap at the entrance to the cassette, through which an unexposed photographic sheet 24 may be inserted. The sheet is fed from the top of a stack 25 by a motor-driven roller 28, and passes between conveyer rollers 33 into the opened cassette, into which it slides under its own weight. A microswitch feeler 35 registers when the loading is complete, and causes the holder and cassette to tilt back to the horizontal position. It may now be taken out through the wall slot and exposed in an appropriate apparatus. After exposure, the cassette can be unloaded by sliding it back into the housing on to holder 3, and tilting the holder down to the position shown in broken lines, until it reaches abutment 14. A further abutment 15 engages against the front edge of the upper part of the cassette and so again it causes it to be slightly displaced so as to open the front. The exposed sheet within can now slide out under its own weight, and in the arrangement shown passes straight into a developing section 18, and thence to a collector platform 19. The cassette itself is shown in more detail in Fig. 9. It comprises a frame 40 in which slides a metal plate 42 covering the exposure aperture 41, and in which is rigidly mounted a glass plate 43. The photographic sheet, when in the closed cassette, is pressed against the rear face of plate 43 by a pressure plate 44 (position of Fig. 10, not shown). Bent leaf-springs 45 engage at one end in pockets 47 in plate 44 and at the other end are fastened to a slide 49 which is displaceably guided in the rear face of frame 40. The slide is normally spring-urged into the "cassette closed" position of (Fig. 10), in which plate 44 is pressed against plate 43. When the cassette is tilted into either the loading or the unloading position, either the abutment means 22 or 15 engage with the slide 49 and push it to the left from the position of (Fig. 10) to the position of Fig. 9. This causes the springs 45 to pass through straps 51, fast with the frame, which bend them and hence retract plane 44 away from plate 43. Through the gap between them the photographic sheet can now slide freely in or out.
Patent GB-1075103-A (GB)
Title: Improvements in or relating to means for changing flow conditions
IPC: D21F1/02
Filed: 1962-12-21
Abstract: 1,075,103. Paper-making. B. RADVAN, F. J. J. GROENEVELD, and HIGGINS TEAPE RESEARCH & DEVELOPMENT Ltd. Dec. 20, 1963 [Dec. 21, 1962], No. 48405/62. Heading D2A. An inlet chamber of a headbox 3 of a cylinder or Fourdrinier paper-making machine comprises inverted triangular walls 21, 22 and outlet 28 formed between the bases 25, 26 of the walls, an inlet 1 formed at the apex of wall 21, and a projection or plate 31 on wall 22 opposite the inlet 1 to provide even flow at the outlet. Wall 21 is preferably right angled at the apex, and inlet 1 is inclined at angle between 90 and 130‹ to the vertical. Preferred relative dimensions of the chamber are given.
Patent GB-1189187-A (GB)
Title: Dehydrohalogenation of Halogenated Nitrile Compounds
IPC: B01J27/06
Filed: 1967-10-25
Abstract: 1,189,187. α-Haloacrylonitriles. BORGWARNER CORP. 25 Oct., 1967 [7 Nov., 1966], No. 48598/67. Heading C2C. α-Haloacrylonitriles are obtained in a vapourphase dehydrohalogenation process by heating α,#-dihalopropionitriles to 50‹ to 250‹ C. and passing them through a reaction zone containing a catalyst. Specified catalysts are the halides and oxides of Cu, Pb, Ca, Zn, Cd, Fe, Co, Bi, Ti, Mn, Ba, Cr and A1 and surface-active materials such as silica gel, activated carbon, activated alumina and activated clay. Other C 3  halogenated nitrites and acrylonitrile are produced as by-products.
Patent GB-1079370-A (GB)
Title: Movement control for a clock
IPC: G04B17/04
Filed: 1965-11-16
Abstract: 1,079,370. Clock balancers. H. HETTICH. Nov.16, 1965[Nov.16, 1964], No.48640/65. Heading G3T. A balance member 4 for a clock is mounted to oscillate on a wire 6, and a balance spring 3 is secured at one end to a stud 2 fixed to a part 10 of the clock chassis, and at the other end to an apertured stud 1 which is secured to the balance staff 4a by a heat setting adhesive or other settable material 5 solidified in the space between the staff 4a and the wall of the aperture 1a in the stud 1.
Patent GB-1241390-A (GB)
Title: Marine speedometer
IPC: G01P5/04
Filed: 1969-10-06
Abstract: 1,241,390. Photo-electric marine speedometer. EASTERN CO. Oct. 6, 1969 [Oct. 21, 1968], No.48965/69. Heading G1A. In a marine speedometer in which the speed detected by a vane is photo-electrically converted by shutters controlling the light falling on a pair of differentially photo-cells PH1, PH2, Fig.4, the connected cell output which is exponential is rendered linear in a circuit in which servomotor M1 drives an indicator 33 and controls potentiometers R1, R2 in a feedback circuit to amplifier 35 to effect the linearization. A potentiometer R4 provides a setting up adjustment according to the exponent value, and in an alternative embodiment it is connected directly between the wipers of potentiometers R1, R2.
Patent GB-1274398-A (GB)
Title: Magnetic keys
Inventor: HUBRICH R
IPC: H03K17/972
Filed: 1970-10-15
Abstract: 1,274,398. Non-contact making switches. RAFI RAIMUND FINSTERHOLZI ELEKTROTECHNISCHE SPEZIALFABRIK. 15 Oct., 1970 [1 July, 1970], No. 49076/70. Heading H3B. [Also in Division H1] A magnetic key comprises a plastic case 1 (Figs. 1, 2) wherein a slide 2 is linearly displaceable against a spring between limiting positions; being furnished with ribs 4, 4<SP>1</SP> engaging internal grooves 5, 5<SP>1</SP> of the case. On the slide is mounted a horseshoe magnet 6 with opposite poles aligned with the direction of motion so that its field threads a magnetically sensitive semi-conductor 7 carrying a current from a source (not shown). Its resistance is variable with the field intensity and it is fixed between soft iron plates 9, 9<SP>1</SP>. In normal position a large field threads the semiconductor, and when knob 10 is depressed this is diminished. Thus the ohmic resistance is varied to generate a switching pulse in the control circuit of a logic element (not shown); if required through an ohmic resistor voltage divider and a transistor passing from a non-conductive to a conductive state. The end of one of the iron plates abutting the semi-conductor may be tapered and may differ in length (Fig. 3, not shown).
Patent GB-1076830-A (GB)
Title: Improvements in or relating to photographic apparatus
IPC: G03B19/10
Filed: 1964-12-04
Abstract: 1,076,830. Photographic apparatus. MEOPTA, NARODNI PODNIK. Dec. 4, 1964 [Dec. 9, 1963], No.49313/64. Heading G2A. In photographic apparatus e. g. an optical bench camera or an enlarger a carrier 1 for a lens or for photo-sensitive material is mounted on a guiding rod 2 having a fixed member 21 attached thereto, which member engages a groove 32 of a rotatable driving member 3. For normal movement of the carrier 1 on the rod 2, the member 3 is rotated and the carrier moves slowly along the rod, a lever 7 being in the position of Fig. 2 (not shown). To move the carrier rapidly along the rod, the lever 7 is turned to the right (Fig. 2) to rotate an eccentric 8 which presses a bearing 4 down to compress a spring 5 and to disengage the groove 32 and the member 21. Rotation of the lever 7 to the position (P) (Fig. 2) causes the eccentric 8 to press a brake block 72 into frictional contact with the rod 2, thus stopping the movement of the carrier along the rod. The member 3 may be provided with resilient elements by means of which it engages the rod 2, the eccentric acting directly on the member 3. Alternatively, the carrier may be moved along the rod by means of a geared transmission, e. g. a rack and pinion.
Patent GB-1071045-A (GB)
Title: Multi-socket wrench
IPC: B25B13/10
Filed: 1965-11-22
Abstract: 1,071,045. Wrenches. B. H. LYNN. Nov. 22, 1965 [May 28, 1965], No. 49549/65. Heading B4W. A multiple socket wrench comprises an outer socket 2 of non- circular inner shape in which a number of nested sockets 8, 9, 10 are retained and in which the open end of each socket is normally positioned in a common plane normal to the axis of rotation, telescopic means being provided whereby the open end of any one of the sockets will engage a corresponding bolt head or nut when the assembly is pressed thereon. A coupling member 3 is press fitted into the end of the outer socket 2, the member 3 having an hexagonal recess 4 for receiving the driving projection 5 of a handle 6. The member 3 has a downwardly extending hook 7 for retaining the next smaller socket 8. Springs 11, 12, 13 associated respectively with pins 15, 17, 20 together with hook 7, hold the outer ends of all the sockets in a common plane. In a modification, Figs. 7-13 (not shown) all pins except the pin 15 are eliminated by the use of integral projections which engage in longitudinal slots to interconnect the three internal sockets.
Patent GB-1528425-A (GB)
Title: Motor vehicle door buffer and warning light
IPC: B60R13/04
Filed: 1976-11-29
Abstract: 1528425 Door stops TENK PRODUCTS Ltd 29 Nov 1976 49696/76 Heading E2X [Also in Division B7] A resilient buffer for a vehicle door includes a door-edge clamp 7 and warning light 8, the latter being operated by a courtesy door switch. The light shines rearwardly through a red window and optionally sideways and forwardly through reflectors or downwardly on to the ground. A door-holding magnet 14 may be fitted.
Patent GB-1083598-A (GB)
Title: Improvements relating to fuel cells
Inventor: WARSZAWSKI BERNARD
IPC: H01M8/20
Filed: 1964-12-07
Abstract: 1,083,598. Fuel cells. SOCIETE GENERALE DE CONSTRUCTIONS ELECTRIQUES ET MECANIQUES (ALSTHOM). Dec. 7, 1964, No. 49745/64. Heading H1B. A redox cell is fed with a metal reducing medium in the form of particles and they are recovered from the electrolyte, reduced in an external regenerator and recycled. The fuel cell may be, e.g. on a vehicle and the regeneration may be at a fixed station.
Patent GB-1171633-A (GB)
Title: Improvements relating to a method of, and an apparatus for reducing the number of needless cuts during the introduction of yarns into electronic yarn cleaners
IPC: B65H63/06
Filed: 1966-11-07
Abstract: 1, 171, 633. Electro-physical measurement. ZELLWEGER Ltd. Nov. 7, 1966 [Dec. 13, 1965] No. 49793/66. Heading G1N. In a yarn cleaner of the kind dislcosed in Specification 1, 082, 059, i.e. in which the diameter of the yarn is measured and a first threshold circuit responds to increases in diameter due to slubs in the yarn and operates a yarn cutter, and a second threshold circuit responds to the integral of the measurement signal so as to produce a cut in the presence of a double thread, the threshold sensitivity of the double thread detector is changed temporarily after a cut, i.e. on insertion of the yarn, so as to increase the number of faults detected. In one embodiment, Fig. 7, signals from a measuring head (not shown and not disclosed) are applied at 41 to the slub detector and at 31 to the R. C. network of the double thread detector. The slub detector comprises the Schmitt trigger 53/55 and the double thread detector the Schmitt trigger 51/55. Switching of either of these circuits controls a bi-stable circuit 52/54. The presence of a double thread causes transistor 52 to conduct and remain conductive, thus connecting resistor 56 into the base bias circuit of transistor 55 instead of resistor 57. If resistor 56 is made larger than resistor 57, the sensitivity of the double thread detector is increased. This is desirable because after cutting a double thread, the chances are that the same fault will continue further along the yarn and could be missed on reinsertion due to the action of the integrating network. When a slub is detected, the bi-stable circuit 52/54 is reversed, and the sensitivity of the double thread detector is returned to normal. It is stated that as an alternative, the slub detector alone can switch the bi-stable circuit so as to reduce the sensitivity of the double thread detector after a slub (instead of increasing it after a double thread) the sensitivity being returned to normal either after a time-delay after reinsertion of the yarn, or on receipt of a signal from the measuring head that the yarn is running.
Patent GB-1386312-A (GB)
Title: Manufacture of settable dental compositions
IPC: A61C5/68
Filed: 1972-10-30
Abstract: 1386312 Controlling mixing by viscosity INOUE-JAPAX RESEARCH Inc 30 Oct 1972 49934/72 Heading B1C [Also in Division G1] Substances which combine to form a solid dental material such as a dental cement are mixed together, and the viscosity or optical properties of the mixture are continuously monitored so that mixing may be terminated when a desired degree of solidification has taken place.  Viscosity measurements: in Fig. 1 a bifurcated arm 6 is vibrated to and fro by electromagnet 2. The arm is centered by springs 1f, and a capsule 7 is inserted into the bifurcated section. The capsule contains mercury 7a, alloy 7b, and an optional mixing pestle 7c. An electric signal representing the arm vibrations and harmonics is given by a strain gauge 8, a piezoelectric device or a microphone, it being found that the harmonic content of the signal is a measure of the viscosity of the amalgan formed in the capsule. The capsule may be retained by a screw passing through one of the arm bifurcations, and the arm may be driven through a spring and eccentric cam, Fig. 6 (not shown). Optical measurements: light may be reflected from the mixture within the capsule, or transmitted through it. In either case the light is focussed onto a photocell, photoconductor or other detector and its amplitude is compared with a preset value, mixing being terminated when the desired value is reached. For Figures see next column
Patent GB-1262531-A (GB)
Title: Polyolefin micro-flake aggregation and paper-like polyolefin sheet obtainable therefrom
IPC: C08J5/18
Filed: 1969-10-13
Abstract: 1,262,531. Polyolefin microflake aggregates. MITSUBISHI RAYON CO. Ltd. 13 Oct., 1969 [14 Oct., 1968 (2); 31 July, 1969; 2 Aug., 1969; 4 Aug., 1969], No. 50190/69. Heading C3P. [Also in Divisions D1-D2] Polyolefin microflake aggregates useful for the manufacture of synthetic papers and which is easily microflakable into a plurality of microflakes of various different shapes having an average thickness of 5 to 20 microns, may be prepared by (1) dissolving 5 to 40 weight per cent of at least one polyolefin at a temperature not less than 100 C. in a solvent having a boiling point not higher than said solution temperature within a closed container in the presence of at least 0À01%, by weight of the polyolefin, of a surface active agent and (2) discharging the solution to the atmosphere through an orifice. Specified polyolefins are polyethylene, polypropylene and ethylene/propylene copolymers. The surface active agent may be anionic, cationic or non-ionic, many classes being listed. Specified solvents are benzene, toluene, xylene, cyclohexane, butane, pentane, hexane, heptane, octane, dichloromethane, chloroform, chloroethane, tetrachloromethane, chloromethane, and fluorohydrocarbons. Many examples are given describing the preparation of microflake aggregates from polypropylene, polyethylene and mixtures thereof using as solvent dichloromethane, tetrachloromethane, mixtures thereof and of tetrachloromethane and chloroform, and as surface active agents polyoxyethylene alkylaryl ethers, sodium higher alcohol sulphates, sodium alkylaryl sulphonates, sodium alkylnaphthalene sulphonates, sodium lauryl sulphate, polyoxyethylene alkylamines, alkylbenzyl ammonium chlorides, alkylamine salts, alkyl pyridinium halides, polyoxyethylene alkyl ethers and polyoxyethylene alkylphenyl ethers; the preparation of the suspension of such microflakes in dichloromethane, mixtures thereof with tetrachloromethane or tetrachloromethane/methanol mixtures, optionally with conventional adhesives such as isobutylene/ isoprene copolymers; and the formation of paper-like products therefrom.
Patent GB-1518201-A (GB)
Title: Explosion-proof electric pressure switching device
IPC: H01H35/26
Filed: 1975-12-09
Abstract: 1518201 Fluid-pressure switches BETA BV 9 Dec 1975 [17 Dec 1974] 50336/75 Heading H1N In a pressure operated explosion proof electric switch assembly the switch unit 4, Fig. 1, is mounted in one compartment 1 of a housing and is actuated through a longitudinally movable pin 9 extending through a wall 12 of the compartment 1, and activated by a fluid pressure unit comprising a diaphragm 14 and piston 13 assembly mounted on a further wall 18 of the housing with the piston rod 10 extending into engagement with the pin 9 through a threaded collar 19 adjustable in a housing 16 for calibrating the fluid pressure unit. A detachable cover plate 40 may be provided to extend between the walls 12, 18 to form an enclosure 3 for the adjust. ing collar 19. Threaded apertures 43 in the side walls of the enclosure 3 provide for release of fluid if leaked from the fluid pressure unit. Connections to the switch 4 are made in a connecting chamber 2 having terminals 31 extending through a wall 5 of the switch compartment 1. Both the switch compartment 1 and chamber 2 having sealing covers 23, 33 and the cover 23 may have holes (28) Fig. 3 (not shown) for mounting the assembly on a wall whereby the assembly may be removed from the cover 23 for examination of the switch 4 while leaving the cover still mounted on the wall.
Patent GB-1454429-A (GB)
Title: Die and air nozzle
IPC: B29C48/06
Filed: 1974-11-20
Abstract: 1454429 Foaming, or cooling extrusion nozzle QUAKER OATS CO 20 Nov 1974 [12 June 1974] 50366/74 Heading B5A In extrusion die for a dough-like material comprises an extrusion passage having an inlet 13 from an extruder, and an outlet 14, and which is surrounded by heating or cooling means 15 and provided with at least one injection nozzle 16 from which cool air, e.g. at ambient temperature, injected into the material as a coolant and/or to foam the material within the passage. The means 15 comprises a jacket through which either cooling water or heating steam may be circulated. The nozzles 16 are of stainless steel, supplied from a pressurized air tank. The material may comprise an expanded pet food blended in a screw extruder, a puffed cereal, or a plastics.
Patent GB-963689-A (GB)
Title: Improvements in or relating to friction welding
IPC: B23K20/12
Filed: 1960-07-25
Abstract: 963,689. Welding by pressure. AMERICAN MACHINE & FOUNDRY CO. July 25, 1960 [Aug. 12, 1959], No. 50393/63. Divided out of 963,681. Drawings to Specification. Heading B3R. The subject-matter of this Specification is substantially the same as matter described in Specification 963,681 but the claims are directed to a method of friction welding workpieces which includes rotating at least one of the pieces relative to the other and forcing the pieces together to generate heat from friction at the contact area, one of the workpieces being first formed with circular groving in the contact area and the other with a corresponding number of ridges.
Patent GB-1499589-A (GB)
Title: Catalytic reduction of nitrobenzene sulphonic acids
IPC: C07C309/46
Filed: 1976-12-02
Abstract: 1499589 Reduction of nitrobenzene sulphonic acids IMPERIAL CHEMICAL INDUSTRIES Ltd 2 Dec 1976 [10 Dec 1975] 50644/75 Heading C2C  Aminobenzene sulphonic acids corresponding to the nitrobenzene sulphonic acids of the formula wherein R 1 , R 2  and R 4  are H, halogen or alkyl, or one of R 1  and R 2  may be OH, and R 3  is H, halogen or NO 2 ; are obtained therefrom by catalytic hydrogenation wherein the nitrobenzene sulphonic acid is introduced into a reduction chamber containing a catalyst and hydrogen under pressure at a rate substantially equal to that at which hydrogenation takes place. Preferred catalysts are the metals of Group VIII of Mendeleef's Periodic System, e.g. Co, Ni, Pt and Pd. Specified reaction conditions are 70‹ to 150‹ C. and pressures up to 600 p.s.i.g. The nitrobenzene sulphonic acid is preferably reduced in the form of an alkali metal salt.