baber/WOPTO huggingface dataset:
Patent GB-890629-A (GB)
Title: Improvements in or relating to servo-assisted brake-operating mechanisms
Inventor: BALLARD DONALD HENRY
IPC: B60T13/24
Filed: 1957-03-12
Abstract: 890,629. Fluid pressure brakes. CLAYTON DEWANDRE CO. Ltd. March 6, 1958 [March 12, 1957], No. 8140/57. Class 103 (1). A servo-assisted brake operating mechanism for road vehicles of the kind in which the output of a vacuum-operated piston and cylinder type servo motor is transmitted through an hydraulic system to the brake-actuating cylinders of the road wheels, the servomotor being of the vacuum-suspended type, has an hydraulic cylinder forming part of the hydraulic system supported on an end wall of the servomotor for actuation by the servo piston through a thrustrod, and a vacuum reservoir in the form of a supplementary cylinder section supported coaxially of the servo cylinder to form a unit therewith, said reservoir being connected to that end of the servo cylinder permanently maintained under vacuum and having a reserve of negative pressure sufficient for at least several brake actuations. The servo cylinder 4 comprises a piston 5 which is connected by a thrust-rod 6b to the piston (not shown) of an auxiliary hydraulic cylinder 1 which, together with a control valve 2, is mounted on an end wall 3 of the servomotor. The wall of cylinder 4 seats on a flange of a perforated diaphragm 15, formed with a bearing 16 for the axiallymovable thrust-rod 6b and a supplementary cylinder 4a is positioned between diaphragm 15 and end wall 3, the whole being clamped together by bolts. A conduit 8 places valve 2 in communication with the outer part of cylinder 4 by a connection, not shown, and the inner part of the cylinder, and cylinder 4a, is connected to a source of vacuum through a connection (not shown) in end wall 3. A further embodiment is described in which cylinder 4 is attached directly to end wall 3 and the supplementary cylinder is secured to cylinder 4 by an imperforate wall, the cylinders being individually connected to conduit 8. In a still further embodiment the control valve and hydraulic cylinder mounted on the end wall are enclosed by the supplementary cylinder. It is stated that the unit may be used as a slave vacuum servo unit in a tractor/trailer braking system. Specification 620,407 is referred to.
Patent GB-1381529-A (GB)
Title: Sampling apparatus
IPC: G01N1/26
Filed: 1972-02-22
Abstract: 1381529 Sampling fluids for chromatography NIPPON PETROCHEMICALS CO Ltd 22 Feb 1972 [22 Feb 1971] 8165/72 Heading BIH [Also in Divisions B8 and Gl] Apparatus for providing samples of different fluids e.g. for gas chromatography comprises sampling valves 13, 13', one for each fluid, each having an inlet and an outlet, a carrier fluid supply 14, a metering vessel 12 and means for alternately connecting the vessel 12 to a respective fluid inlet line 8', 9' while carrier fluid flows through the other valve(s) and to the carrier fluid supply 14 for flushing of the sample from the vessel 12 into the chromatographic apparatus 16 &c. The carrier fluid flows through all the valves in series. A single fluid is sampled at any one time from a series of sources a, b &c the independent lines 8', 9', &c, preventing contamination. Alternatively, Fig. 5, the respective sampling valves may be connected to the sampling lines 8', 9' and the flushing line 14 for rotation through 60‹ between their alternative positions.
Patent GB-885526-A (GB)
Title: Powder dispensing apparatus
Inventor: COOK LESLIE
IPC: B65G53/12
Filed: 1959-03-10
Abstract: 885,526. Pneumatic conveyers. BRITISH OXYGEN CO. Ltd. March 8, 1960 [March 10, 1959], No. 8271/59. Class 78 (1). The discharge pipe 12, Fig. 1, of a hopper 10 extends nearly to the bottom of a mixing chamber A into which carrier gas is admitted through a pipe 20 or pipes, arranged as shown in Fig. 2 to swirl about the axis of the chamber. Carrier gas is supplied to the space between the powder 10 and the cover 13 of the hopper through a pipe 22.
Patent GB-670921-A (GB)
Title: Improvements in intermittent film-feeding mechanisms for motion picture apparatus
IPC: G03B1/22
Filed: 1950-04-03
Abstract: 670,921. Kinematograph apparatus. KODAK, Ltd. April 3, 1950 [April 1, 1949], No. 8314/50. Class 97 (i). In a claw-type intermittent feed mechanism the claw is mounted at the end of a rigid arm extending approximately at right angles to the direction of film movement in a plane approximately parallel to the film, the arm being mounted on a ball-joint to permit the movements of the claw to engage the film perforations and feed the film. In the form shown the claw 22 is carried on an arm 21 pivoted on a ball 42 seated, at one side, in a recess in the arm and, at the other, in a recess in the member 40 secured to lugs 29, 291 on the casing wall. Another ball 49 is located between the claw arm and the member 40, but its seatings permit the ball to roll for movement of the arm in its own plane. A leaf-spring 44 overlies the arm and presses it on a ball 47 seated like the ball 49. The three balls are in line. A spring encircling a boss 28 has one end 27<SP>1</SP> bearing against the lug 29 and the other end 26 acting on the claw arm. The latter carries a roller follower 25 engaging, with its circumference, a peripheral cam 24 and, with its end face, a face cam 35, both cams being concentrically mounted on the shutter shaft 17. A tongue of metal 36 struck out from the shutter engages holes in both cams to secure proper angular location thereof. The spring 26 exerts such a force on the claw arm as to maintain contact of the follower with both cams. The periphery of the shutter is used as a driving pulley. The member 40 is secured to the lugs 29, 291 by bushes 56 engaging slotted holes in the member. This permits vertical movement of the member by the lever 58 to provide a movement of the claws in the direction of film feed for framing purposes, the lower bush 56 may be eccentric so that rotation of it produces a lateral movement of the claw arm to vary the point of application of the follower 25 on the cam 24 to vary the feed stroke. By choosing the position of the ball 47 to the right of the line joining the balls 42, 49 a force is produced on the claw arm urging it towards the film. This arrangement may be chosen if the claw is of the type which trails over the film perforations on.the upward stroke. The cam 35 is then dispensed with. If the cam is retained with a claw of the kind needing to be disengaged from the film, the ball 47 may be located to the left of the others to produce a force on the claw arm to retain the follower 25 in contact with the cam. In either case the spring 26 may be dispensed with if the cam 24 is replaced by a member carrying a cam groove for driving the follower both up and down.
Patent GB-350569-A (GB)
Title: Improvements in and relating to valve gears for fluid-pressure engines
IPC: F01L29/04
Filed: 1930-03-15
Abstract: 350,569. Fluid - pressure engines. VERNON, F. W., 4550, 7th Avenue, West, Vancouver, Canada. March 15, 1930, No. 8385. [Class 122 (ii).] In a locomotive or other steam-engine separate admission ports 11, 12 and exhaust ports 13, 14 are provided, controlled by a sleeve-valve 15, cutoff being effected by an inner piston-valve 20, without affecting exhaust or compression. Steam is supplied to the interior of the valve 15 from a steam passage 9 through ports 17 and passes to the ports 11, 12 through ports 18, 19. The rod 16 of the valve 15 is pivoted to a lever 35, the lower end of which is connected by a link 34 to the main crosshead 33, while the upper end is connected by a link 36 to a block 37 in a pivoted slotted link 32, which is oscillated by an eccentric 29. The position of the block 37 is adjustable for reversing by means of a link 38. The valve 20 is operated by a lever 46, which is connected to the rod 23 of the valve 20 and to a return rod 40 from the rod 16, so that the valves 15, 20 tend to move together. The lever 46, however, is pivoted on trunnions 47, movable in slots 53 in a forked lever 51, which is pivoted at a fixed point 50 and is connected at its lower end to the engine tail-rod 5. The lever 51 thus moves the valve 20 in advance of the valve 15, the amount of such movement being adjustable by moving the trunnions 47 in the slots 53 by means of links 48, 49. The lever 46 comprises side-plates carrying between them, in spaced relation, a third slotted plate, which passes through slotted members 42 inserted in the rods 40, 23. Blocks pivoted in the slots in the members 42 engage the slot in the third plate.
Patent GB-1432309-A (GB)
Title: Semiconductor structures
IPC: H01L29/78
Filed: 1974-02-25
Abstract: 1432309 Semiconductor devices SIGNETICS CORP 25 Feb 1974 [2 March 1973] 8445/74 Heading H1K An enhancement-mode IGFET having a gate electrode of a semiconductor material such as polycrystalline silicon has a relatively low resistivity channel region formed, e.g. by ion inplantation, at the surface of a higher resistivity substrate. A process is described which uses conventional planar techniques in the manufacture of such an IGFET in a P-type substrate having a resistivity of 25 # cm. Prior to diffusion of the source and drain regions, e.g. from P-doped glass, the substrate area which the device is to occupy is subjected to B-ion bombardment through an oxide coating under conditions such that the peak density of implanted ions occurs at the substrate surface. The temperature of 700-1000‹ C. employed during the subsequent deposition of the polycrystalline Si gate electrodeissufficiently high to anneal bombardment-produced radiation damage but too low to cause significant migration of implanted ions into the bulk of the substrate. The device may be surrounded by a diffused or implanted P<SP>+</SP> isolation region. The invention is applicable to integrated circuits including both enhancement mode and depletion mode IGFETs, the latter differing from the former only in that the surface implantation of B-ions is omitted. Reference has been directed by the Comptroller to Specification 1,261,723.
Patent GB-509442-A (GB)
Title: Improvements in and relating to the manufacture of steel
IPC: C21C7/06
Filed: 1938-03-18
Abstract: 509,442. Purifying and refining steel. BRASSERT & CO., Ltd., H. A. (Colclough, T. P.). March 18, 1938, No. 8476. [Class 72] To degasify steel and free it from suspended impurities, small quantities of both aluminium and a fluoride are added to the metal during pouring into an ingot mould. A fluoride of calcium or sodium or both may be used with the aluminium.
Patent GB-868251-A (GB)
Title: An installation for decking mine cages
IPC: B66B17/20
Filed: 1958-03-17
Abstract: 868,251. Feeding tubs to mine cages. MONNINGHOFF, S., [trading as MASCHINENFABRIK MONNINGHOFF]. March 17, 1958 [July 30, 1957], No. 8478/58. Class 78 (4). Tubs are decked into mine cages by a reversible creeper 12 which can supply either of two tracks 17, 18 by means of points 14 between the creeper and the cage. As shown, each of two reversible creepers 12, 13 can supply either track to a shaft 1 by means of cross-over points 14. The trucks are uncoupled at a pit 15, and before uncoupling can be moved back by the creepers if required to clear the points.
Patent GB-1457350-A (GB)
Title: Method of producing matrices for pressing grooves in foils
IPC: B29D17/00
Filed: 1974-02-25
Abstract: 1457350 Making negatives from lacquer foils; abrasive tools TED BILDPLATTEN AG AEGTELEFUNKEN TELDEC 25 Feb 1974 [23 Feb 1973] 8479/74 Headings B3A and B3D [Also in Division G5] In a method of producing a negative 12, Fig. 1b from a lacquer foil 2, Fig. 1a, for the manufacture of audio or video record discs or of grinding discs, a lacquer foil 2 is cut to form a first groove or grooves 3 containing information to be played back by a scanner or for grinding a scanner and additional deeper grooves 4a, 4b for producing cutting edges 14a, 14b on a negative 12 formed from the lacquer foil 2. The negative 12, which is galvanically produced from the foil 2, is used to press a record disc or a grinding foil disc for grinding the scanner, the outer periphery of the disc being cut by the cutting edge 14a and the centre hole of the disc being cut by the cutting edge 14b.
Patent GB-242518-A (GB)
Title: A new or improved appliance for helically coiling strips of metal
IPC: B21C37/26
Filed: 1925-03-30
Abstract: 242,518. Rauch, O. March 30, 1925. Coiling.-An apparatus for coiling metal strips on a solid or tubular shank for making worm conveyers, ribbed tubes or seed hoppers consists of a pair of guide cheeks carried by the slide rest of a lathe and provided therebetween with rollers so as to guide the strip which is secured at one end to a revolving shank or spindle. The strip d passes between the cheeks b of the guide cheeks and under rollers c mounted on two of the fixing screws a and is welded or otherwise secured to the shank or tube e which is rotated between the poppet heads of the lathe. The corrugations i formed during coiling are accommodated by forming steps f at the bottoms of the cheeks, the cheeks being adjusted downwardly to the right from the position shown so as to coil narrower strips. For making seed hoppers the cheeks may be inclined as shown in Fig. 3.
Patent GB-175909-A (GB)
Title: Improvements in or relating to coin-controlled operating mechanism for gas-meters and the like
IPC: G07F15/02
Filed: 1921-03-18
Abstract: 175,909. Wilson, J. H., and Wilson Gas Meters, Ltd., G. March 18, 1921. Gas, supplying by meter.-The screw-threaded shaft 3 operated by coin-mechanism of the kind described in Specification 106,911 and mounted between end-plates 4, 5 is formed with a screwthread 13 of quicker pitch at one end than at the other so that initial rotation of the shaft from zero position causes greater movement of the valve-controlling nut 12 than subsequent rotation to ensure a satisfactory opening of the supply valve. The nut 12 which comprises a pinion internally formed with an inwardly extending tooth to engage the screw-thread 13 is returned by a long pinion 14 in gear with it and operable by the flow of gas through the meter. A slide 16 engaging a flange on and travelling with the nut 12, being guided by the pinion 14 which passes through it, has a pin 17 which engages a slot in and operates an index arm 18, for indicating the amount of gas to the consumers' credit. Casings.-The drum 1 surrounding the coin mechanism is detachably secured to the end plate 4 by lugs 9 passed through slots in the plate 4 and locked by a partial rotation of the drum. The parts are then held by a nut 10 engaging a threaded pin 11 on the drum.
Patent GB-1144242-A (GB)
Title: A method and apparatus for producing a tube bank consisting of a single meandering cross-rolled finned tube
Inventor: STRACHAUER WALTER
IPC: B21D11/07
Filed: 1966-02-26
Abstract: 1,144,242. Finned heat-exchange tubes. MASCHINEN - UND APPARATEBAU SCHKEUDITZ VEB. 26 Feb., 1966, No. 8553/66. Heading F4S. [Also in Division B3] A method of making a heat exchanger tube bank from a single length of tubing comprises the steps of forming on the tube by rolling, a single helical fin 20 which is reduced in height at axially-spaced portions of the tube length, annealing these portions and bending the tube to form the tube bank. The fins of reduced height may be formed by machining portions of a smooth tube before rolling the fins or by retracting the fin-forming rolls at intervals during the rolling operation. The rolling of the fins simultaneously raises a helical fin 6 on the inside of the tube of the same pitch as that of the outside fin 20. The tube may be formed of aluminium or other light metal.
Patent GB-982937-A (GB)
Title: Folding carton blank and carton produced from such blank
Inventor: LONDORF IMMANUEL PETER
IPC: B65D5/4805
Filed: 1961-03-08
Abstract: 982,937. Cartons. K. ABILDGAARD, [trading as LOVENS KEMISKE FABRIK VED A KONGSTED]. March 8, 1961, No. 8557/61. Heading B8P. A carton formed from a single blank has internal partitions J-L formed from extensions on end walls D, E. Each end wall has partitions L, J or K, M connected thereto by portions F, H or I, G, the portions I, H being longer than portions F, G to space the partitions longitudinally of the carton. Incisions 14 accommodate flaps P, Q on lid portions O, N. If the carton is small and lacks rigidity a camb-shaped piece of card engages the partitions to maintain the form of a half-empty carton. Flaps X, Y may be provided on end walls D, E.
Patent GB-206089-A (GB)
Title: Improvements in or relating to railway and tramway vehicles
IPC: B61G5/02
Filed: 1923-03-26
Abstract: 206,089. Westlake, C. T. March 26, 1923. Couplings, axle-trucks used as.-In a car structure adapted for union with an adjacent car structure by a common truck, side bearings at opposite sides of the end of each are located at different distances from the longitudinal centre line of the car in such a manner that the opposing bearings of the two car bodies supported upon a common truck can move past each other without interference. The side bearings 9, 10 attached to the end sill of the vehicle 1 are unequally spaced from the centre pivot 15 mounted on the truck bolster 8 and bear upon the truck side bearing plates 13, 14 respectively. Similar side bearings 11, 12 are attached to the end sill of the opposing vehicle 2 and bear upon the side bearing plates 13, 14, the spacing of the side bearing '11, 9 or 12, 10, enabling them to pass one another on their respective truck side bearings when relative motion occurs between the two cars on curves. The socket for the centre pivot, and both side bearings attached to each end of the sill, are bent downwardly and outwardly to bear on the truck bolster 8.
Patent GB-1461632-A (GB)
Title: Semi-conductor alser
IPC: H01S5/323
Filed: 1974-02-26
Abstract: 1461632 Semi-conductor lasers MATSUSHITA ELECTRONICS CORP 26 Feb 1974 [26 Feb 1973 (2)] 8651/74 Headings H1C and H1K [Also in Division C4] A double heterostructure laser comprises, in sequence, a substrate, a Ga 1-y Al y As region of a first conductivity type, an active region, and a Ga 1-y Al y  region of a second conductivity type, the proportions of either the substrate constituents or the constituents of one or more of the regions being chosen such that either the lattice constants of the substrate and adjacent region substantially coincide, or the lattice constant of the active region is smaller than that of the regions immediately adjacent. By avoiding lattice constant mismatching, fewer lattice dislocations forming non-radiative centres are obtained at the heteroboundaries and the threshold current for laser operation is lowered. Lattice constants of substrate and adjacent region are subsequentially coincident. The semiconductor laser of Fig. 2 is formed by epitaxial growth of an N-type region 12, a GaAs active region 13, a P-type region 14 and a P-type GaAs region on an N-type Ga 1-x In x As substrate. Both regions 12 and 14 comprise The value of x in the substrate constituents is selected from the range 0À025#x>0 for lattice constant coincidence. The structure includes electrodes 11<SP>1</SP>, 16 and a cleaved end surface 11<SP>11</SP>. Lattice constant of active region smaller than that of immediately adjacent regions. The regions of this laser, Fig. 3, differ from Fig. 2 in that the substrate 21 is N-type GaAs and the active region 23 is Ga 1-z In z As, where 0À015>z >0.
Patent GB-1420897-A (GB)
Title: Preparation of 2,5-disubstituted benzamides
IPC: C07C67/00
Filed: 1974-02-26
Abstract: 1420897 Process for 2,5-disubstituted benzamide SOC D'ETUDES SCIENTIFIQUES ET INDUSTRIELLES DE L'ILE - DEFRANCE 26 Feb 1974 [28 Feb 1973] 8667/74 Headings C2C and C2P N - (Diethylaminoethyl) - 2 - methoxy - 4- amino-5-chlorobenzamide (I) is made by reacting 2 - methoxy - 4 - acetamido - 5 - chlorobenzoic acid with triphenyltrichloromethylphosphonium chloride (prepared from Ph 3 P and CCl 4 ), allowing the compound (II) obtained to spontaneously decompose to the acid chloride (III) and reacting (III) with NH 2 CH 2 CH 2 NEt 2  under conditions that also convert the NHCOCH 3  group to NH 2  (I) may, if desired, be converted into its salts.
Patent GB-1163934-A (GB)
Title: Production of Sulphonyl Chlorides
Inventor: HORNER PATRICK JAMES
IPC: C07C309/78
Filed: 1966-02-28
Abstract: 1,163,934. Sulphonyl chlorides. IMPERIAL CHEMICAL INDUSTRIES Ltd. 7 Feb., 1967 [28 Feb., 1966], No. 8719/66. Heading C2C. Sulphonyl chlorides are produced from the corresponding free sulphonic acids in a reaction mixture containing a catalytic amount of a chlorinated complex of a tertiary organic amide or thioamide, in which chlorinating agent is present in the reaction mixture throughout the reaction and the sulphonic acid is introduced (after a small initial addition) at a rate no greater than the rate at which the sulphonic acid is used up. The complex may be formed in situ from the tertiary amide and chlorinating agent. In examples 4-phenoxybenzene-sulphonic acid and biphenyl-4-sulphonic acid are reacted with phosgene or phosphorus pentachloride in the presence of a complex of N,N-dimethyl-formamide.
Patent GB-1158692-A (GB)
Title: Improvements in or relating to Acrylanilides
Inventor: RANDALL DAVID IRWIN
IPC: A01N37/22
Filed: 1968-02-22
Abstract: 1,158,692. Acrylanilides. GAF CORP. 22 Feb., 1968 [23 Feb., 1967; 13 April, 1967], No. 8760/68. Heading C2C. Novel 2,3-dihaloacrylanilides of the general formula where X is one or more of the following substituents : Cl, Br, I, F, NO 2 , sulphonamido, carboxy, alkyl, alkoxy, amido, haloalkyl or aryl; R is hydrogen or an alkyl radical having from 1 to 4 carbon atoms and Z is a halogen atom are prepared by reacting an amine of the formula XR<SP>1</SP>NHR where X and R are as defined above and R<SP>1</SP> is an aryl group with a 2,3- dihaloacryloyl halide in the presence of an acid acceptor, e.g. an aliphatic tertiary amine or an alkali metal or alkaline earth metal hydroxide, carbonate or bicarbonate. In the examples 2,3-dichloroacrylanilides, in which the benzene ring is substituted by Cl, NO 2 , CF 3 , -COOH, -OCH 3  and -SO 2 NH 2 , are prepared. The novel dihaloacrylanilides possess herbicidal activity and particularly phytotoxicity against aquatic weeds. They may also be employed as oil additives, e.g. anti-wear and corrosion inhibitors.
Patent GB-1025554-A (GB)
Title: A suspension insulator
IPC: H01B17/02
Filed: 1963-03-05
Abstract: The mild steel pin of a suspension insulator is protected from corrosion where it enters the cement 4 by a sacrificial sleeve 5 of zinc alloy containing at least 50% zinc; such a sleeve is electrochemically more positive than the pin.  The corrosion products readily wash away from the pin. The sleeve may be cast on to the pin at about 410 DEG C.
Patent GB-377924-A (GB)
Title: A combination fire-screen and table
IPC: A47G5/04
Filed: 1932-03-24
Abstract: 377,924. Tables. DAVIS, W. S., 3, Euston Square, London. No. 8806. March 24, 1932. [Class 52 (iii). A table with a hinged top movable into a position for use as a fire-screen is mounted so as to be vertically adjustable in order to enable the table to be used as a tea table or as a card &c. table. The Figure shows a table with a top 12 in a vertical position. It is mounted on a stand 1, in which is slidably fitted, by means of tongue and groove joints 3, an inner frame 5, the height of which can be adjusted by spring-pressed rods 8 retractable by handle 10. On this frame 5 the table top 12 is mounted by means of blocks 11. The frame 5 and the blocks 11 are connected by pivot pins 13, and the table is kept either in a vertical or a horizontal position by spring-pressed pins with knobs 14. On the underside of the table is a box 15, with a lid 16, for cards &c.