baber/WOPTO huggingface dataset:
Patent GB-849956-A (GB)
Title: Polymerisation process
Inventor: BOWN CECIL EDWIN HENRY
IPC: C08F10/00
Filed: 1958-08-07
Abstract: Ethylenically unsaturated hydrocarbons are polymerised in the presence of a liquid medium and a catalyst comprising an aluminium halide and an inorganic mercury derivative preferably a compound capable of forming some sort of loose complex with the halide. The term "inorganic mercury derivative" includes a salt of mercury with an organic acid but does not include a carbon-metal bond. Derivatives of mercury mentioned are mercuric chloride, bromide, iodide, nitrate, sulphide, cyanide, chromate, and oxide, potassium mercuri-iodide, and mercuric acetate.  The halide may be aluminium chloride or bromide.  The hydrocarbon may be ethylene, propylene, butylene, pentene, butadiene 1 : 3, styrene, or alpha-methylstyrene, and mixtures.  The catalyst can if desired be supported on an inert carrier, e.g. charcoal or silica gel.  The liquid medium may be trichloroethylene, tetrachloroethylene, carbon tetrachloride, chloroform, ethylene dibromide, cyclohexane, n-decane, n-hexane, n-heptane, n-dodecane, stannic tetrachloride, and silicon tetrachloride.ALSO:A catalyst for polymerizing ethylenically unsaturated hydrocarbons in the presence of a liquid medium comprises an aluminium halide and an inorganic mercury derivative e.g. a compound capable of forming some sort of loose complex with the halide.  The term "inorganic mercury derivative" includes a salt of mercury with an organic acid.  The catalyst may be supported on an inert carrier e.g. charcoal or silica gel.  The two components may be deposited on the carrier by impregnating the carrier with a solution of the components and drying the carrier, or by impregnating the carrier with the mercury derivative and adding a solution of the aluminium halide to the impregnated carrier. Derivatives of mercury mentioned are mercuric chloride, bromide, iodide, nitrate, sulphide, cyanide, chromate, and oxide, potassium mercuri-iodide, and mercuric acetate.  The halide may be aluminium bromide or chloride.  The liquid medium may be organic or inorganic e.g. trichloroethylene, tetrachloroethylene, carbon tetrachloride, chloroform, ethylene dibromide, cyclohexane, n-decane, n-hexane, n-heptane, n-dodecane, stannic tetrachloride, or silicon tetrachloride.
Patent GB-615091-A (GB)
Title: Photographic dry developing machine
IPC: G03D7/00
Filed: 1946-08-24
Abstract: 615,091. Photographic developing apparatus. GENERAL ANILINE & FILM CORPORATION. Aug. 24, 1946, No. 25364. Convention date, Sept. 27, 1945. [Class 98 (ii)] In gas developing apparatus having developer vaporizing means and a tank having a perforated portion through which developing vapours pass.and also having a belt movable over the perforated part of the tank to feed material to be developed and to restrict escape of developing vapour, a flexible link belt, which may be stationary or may move at substantially the same speed as the feed belt in contact with the perforated portion of the tank, is provided as a support for the material to be developed. As shown, the tank 11 has an inclined perforated side 13 which serves as a bearing for a flexible link-type endless belt 15 driven by the rubber-covered roller 23. Both the tank and belt may be of stainless steel or the belt may be of plastic material. The material to be developed is fed by a rubberized fabric endless belt 12 driven by the roller 21. Inside the tank 11 is provided an ammonia tray 16 with one or more heaters 17. The belt 15 may be driven slightly faster than the belt 12. A sealing plate 49 having clamps 50 and 51 with " Neoprene-" or other flexible sealing strips may be provided. In a modification, the belt is stationary and is welded or clamped to the tank. Specification 495,392 is referred to.
Patent GB-436324-A (GB)
Title: Improvements in centrifugal machine guns
IPC: F41B3/04
Filed: 1934-09-04
Abstract: 436,324. Centrifugal guns. LABRUNIE, E., 9, Rue Lanthier, Marseilles, France. Sept. 4, 1934, No. 25429. [Class 92 (ii)] A centrifugal machine gun has a circular conduit 1 guiding the projectiles 2 from a feed position 4 to a tangential barrel 9, the projectiles being impelled by a flange 8 on one or more radial arms 7 fixed to a rotary disc 6, and the projectiles, as they enter the barrel 9, being given a rapid axial rotation by a roughened surface x on each arm.
Patent GB-1099622-A (GB)
Title: Improved stator winding for alternating current machines
Inventor: GERLACH RUDOLF
IPC: H02K3/28
Filed: 1965-06-16
Abstract: 1,099,622. Winding layouts for A.C. machines. LICENTIA PATENT - VERWALTUNGS G.m.b.H. June 16, 1965, No. 25483/65. Heading H2A. An alternating current machine is provided with three parallel paths per phase per pole-pair (instead of the usual two) by arranging the coils of a third path to give a very similar voltage. Thus in the Figure, the two normal coils are in slots 1, 19 ; 3, 21; 4, 22; and 6, 24. The third coil lies in slots 2, 5, 20 and 23 so displaced that their vectorial sum is much the same.
Patent GB-895510-A (GB)
Title: Air driven turbines
Inventor: CHANDLER ROBERT WALTER
IPC: F01D5/30
Filed: 1959-07-27
Abstract: 895,510. Bladed turbine rotors. ROTAX Ltd. June 14, 1960 [July 27, 1959], No. 25636/59. Class 110 (3). A rotor for an air-driven turbine comprises a central body part carrying a plurality of equiangularly spaced peripheral blades which are freely located for radial movement relative to the central body part, and are held in position by means of an encircling member which is locally weakened at at least one angular position. The central body part a has in its periphery a plurality of equi-angularly spaced holes for the reception of dowels b on the turbine blades c. Encircling the radially outer tips of the blades c is a band d which is located against axial movement by extensions b 1  of some of the dowels b engaging in a groove formed in the band. The band is locally weakened as by holes at at least one and preferably three equiangularly spaced positions e.
Patent GB-668575-A (GB)
Title: Traffic light for attachment to the arm
IPC: G08B5/36
Filed: 1949-10-06
Abstract: 668,575. Road-traffic signals on the person. LEE. J. F. Oct. 37, 1950. [Oct. 6, 1949] No. 25696/49. Class 118 (ii). (Also in Group XVIII) An electric traffic signalling device for attachment to the arm of cyclists or drivers of vehicles not having built-in signalling means comprises a metal casing a (Fig. 1), containing a dry battery c, and a transparent plastic tubular or halfround member b held together by shaped metal endpieces a<SP>2</SP>, a<SP>3</SP> and a longitudinal bolt d, and nut d<SP>1</SP>. A small part a<SP>1</SP> of the casing a is bent up at right angles to carry a lamp and holder which lie parallel to the casing within member b. A main switch in the end-piece a<SP>2</SP> comprises a piece of fibre insulation f<SP>2</SP>, nut n<SP>1</SP> fixed to the end-piece with a small screw n running therein so as to contact the end of battery c when screwed in. The other end-piece a<SP>3</SP> contains two thin pieces of fibre insulation f and f<SP>1</SP> the former carrying. contacts g and g<SP>1</SP> to connect respectively with the lamp and battery. These contacts are joined to the ends of twin flexible wires which are connected to a push button finger-switch, Fig. 2 (not shown), so that the lamp circuit may be completed by pressure on the said finger switch. A springy clasp e is pivotally attached to the casing a (see especially Fig. 5) for'clipping the device to the forearm near the wrist, and the finger switch has a similar but smaller clasp for clipping round a finger. The device may be made almost entirely in plastic material in which case the fibre insulation. pieces can be dispensed with, but a metal strip must be provided to effect the connection between nut n and the lamp holder.
Patent GB-1028495-A (GB)
Title: Improvements in or relating to devices for inverting carried or drawn agricultural implements
IPC: A01B3/421
Filed: 1963-06-27
Abstract: 1,028,495. Agricultural implements. ETABLISSEMENTS P. VIAUD AND CIE. June 27, 1963 [June 30, 1962], No. 25704/63. Heading A1B. A reversible plough is provided with a hydraulic cylinder E for rotating a shaft D in which are mounted the plough bodies by means of an articulated connection consisting of two parts B, C, pivoted together, the part C being connected to the shaft D and the part B being pivoted at F to the plough frame and to the jack at L. The jack is slidable in a collar K and is connected by a linkage G to a cam which releases a locking mechanism for securing the implement in each of its desired positions. A separate hydraulic cylinder may be used to replace the linkage G and cam.
Patent GB-984826-A (GB)
Title: Improvements in nuclear magnetometers of the type making use of a high frequency pumping on an electronic transition
Inventor: BONNET GEORGES
IPC: G01R33/24
Filed: 1961-07-14
Abstract: 984, 826. Magnetic tests. COMMISSARIAT A L'ENERGIE ATOMIQUE. July 14, 1961 [July 18, 1960], No. 25705/61. Heading G1N. In a magnetometer of the nuclear resonance type a sample vessel containing the resonance material is disposed between the inner and outer conductors of a short-circuited coaxial line in the vicinity of a magnetic antinode, the line being energized at radio frequency to provide a polarizing magnetic field, and means are provided for measuring the nuclear precession frequency. In Fig. 1 the sample vessel comprises two insulating cylinders 2, 4a joined at each end to form an enclosure containing, for example, an aqueous solution of a paramagnetic salt such as potassium nitrosodisulfonate. The outer cylinder and one end closure are provided with a thin coating of copper or silver forming the outer conductor of a coaxial line; the inner conductor comprises a tube 1 extending through the inner cylinder 2 and joined at one end to a conducting plate 1c which makes contact with the end coating to short-circuit one end of the line. The other end of the line is connected through two impedance matching condensers to a further line connected to a R. F. source 9 operating at a frequency of about 56 megacycles (depending on the resonance material). The sample vessel is surrounded by a pick-up coil 10 tunable by a condenser 12 to resonate at the nuclear resonance frequency (about 2000 cycles/sec. for protons in the Earth's magnetic field) and connected to an amplifier 13, frequency meter 14, and recorder 15. To minimize the effect of the coaxial line on the inductance of coil 10 the inner conductor 1 may be a longitudinally split tube and the coating forming the outer conductor may be interrupted along three longitudinal strips. To make the apparatus less sensitive to the direction of the magnetic field to be measured, two sample vessels and their associated coaxial lines may be arranged at right angles to each other with their lines connected in parallel, Fig. 4 (not shown), or in series, Fig. 5 (not shown), the pick-up coils being connected in series. Alternatively, Fig. 6 (not shown), a single sample vessel may be surrounded by two pick-up coils at right angles, the axes of the coils being at right angles to the axis of the coaxial line. In a further modification, Fig. 8 (not shown), the apparatus of Fig. 1 is surrounded by a further coil energized at 50 or 60 cycles per second to produce a periodical variation of the total magnetic field to which the sample is subjected. Specifications 888,439, 914, 751, 941, 310 and 964, 017 are referred to.
Patent GB-1147215-A (GB)
Title: Cryogenic condenser liquid-gas separating apparatus
IPC: F25J3/06
Filed: 1966-06-09
Abstract: 1,147,215. Separating cryogenic liquids from gases. ARTHUR D. LITTLE Inc. 9 June, 1966 [11 June, 1965], No. 25779/66. Heading F4U. [Also in Division G1] In a helium repurifying plant, a mixture of gaseous helium and liquid air is passed through a pipe 26 into a pressure vessel 25, a valve 29 in a liquid discharge line 28 being operated according to the position of a float 32 in a guide tube 30. The float 32 moves in the guide tube with a slight clearance and carries a tube 33 which is suspended by a spring (72), Fig. 7 (not shown), from the top of the tube 30. The tube 33 carries the core of a linear differential transformer 35 which is connected into a control circuit, Fig. 8 (not shown), of the valve 29 in such manner that when the float 32 rises to a predetermined level the valve 29 is opened and when the float subsequently falls to a further predetermined level the valve is closed. The lower level is that at which the float rests on a supporting baffle 43 so that a liquid seal is always maintained at the bottom of the vessel 25. The transformer sensing means may be replaced by a photoelectric system. In use the vessel 25 is immersed in a bath (12) of liquid nitrogen, Fig. 1 (not shown). A mixture of gaseous helium and air is passed by a compressor (13) through the bath and enters the vessel 25 after liquefaction of the air. Helium discharged through the pipe 27 passes through an activated charcoal purifier (18) which is also immersed in the nitrogen bath.
Patent GB-1511521-A (GB)
Title: Process for producing unburned basic refractories
IPC: C04B35/632
Filed: 1975-06-17
Abstract: 1511521 Process for producing unburned basic refractories SHINAGAWA REFRACTORIES CO Ltd and NIPPON OIL CO Ltd 17 June 1975 [24 June 1974] 25790/75 Heading C1J In a process for producing unburned basic refractories in which a binder is kneaded with a basic refractory material and the kneaded material is press-formed, the binder is a thermoplastic resinous material which is obtained as the residue after removal of a light fraction having a boiling point of less than 200 C. measured at a reduced pressure of 100 mmHg from (a) a residual oil obtained by steam cracking of petroleum or a petroleum fraction, (b) a polymerization product of such a residual oil, or (c) a mixture of (a) and (b), and which material has a benzene-insoluble fraction content of less than 10% by weight.
Patent GB-303430-A (GB)
Title: Improvements in utensils for containing liquid
IPC: A47J47/18
Filed: 1927-09-30
Abstract: 303,430. Jagger, C. W. G. Sept. 30, 1927. Jugs.-A milk jug is provided with a sediment-retaining lip A of concave form projecting internally and downwardly and disposed near the top of the vessel. Reference has been directed by the Comptroller to Specifications 19415/89 and 21343/02.
Patent GB-739217-A (GB)
Title: Improvements in roadway surfaces and in methods of constructing the same
IPC: E01D19/08
Filed: 1953-09-21
Abstract: 739,217. Paving. BADISCHE ANILIN- & SODA-FABRIK AKT.-GES. Sept. 21, 1953 [Sept. 25, 1952], No. 25952/53. Drawings to Specification. Class 20 (4). A road, particularly on a bridge, is surfaced by securing, e.g. by adhesive, to the steel or concrete constructional elements of the bridge a foil of a polymer containing a preponderating proportion of isobutylene and applying to the foil a hot bituminous mass, which, after cooling, forms the wear-exposed layer of the road. The sheet may be polyisobutylene, or copolymers of at least 80 per cent isobutylene with butadiene, isoprene, styrene, vinyl ethers, or dimethyl fumarate and may be 1-3 mm. thick. The bituminous material may be mastic or asphaltic residues of pressure extraction or hydrogenation of mineral coals or oils 1-7 mm. thick.
Patent GB-376092-A (GB)
Title: Improvements in electric lamps
IPC: H01K7/06
Filed: 1931-09-17
Abstract: 376,092. Electric incandescent lamps. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London.-(Assignees of Patent-Treuhand-Ges. f³r Elektrische Gliihlampen; 11, Ehrenbergstrasse, Berlin.) Sept. 17, 1931, No. 26083. Convention date, Sept. 17, 1930. [Class 39 (ii).] In an electric lamp of the imitation candle type, a tubular glass envelope with an opaque white or coloured stem 1, Fig. 1, is provided with a frosted pointed upper portion 2 within which is arranged a small incandescent lamp provided with either a clear or frosted bulb 4. The internal lamp may be supported by sealing its foot tube 5 to the upper end of a rod 8 which is sealed at its lower end to the part of the stem 1 cemented to the cap 3 or, as shown in Fig. 2, the lamp bulb 4 may be clamped in a resilient circular loop 9 formed by two supporting wires 10 which are fixed to the cap 3, preferably by a soldered or welded collar. The tubular envelope 1 is detachably fastened to the cap 3 by a clamping ring 12. The supporting wires 10 may be detachably secured to the cap by means of tongues stamped from the latter.
Patent GB-1062977-A (GB)
Title: Improvements in or relating to fire-proof doors
Inventor: ELCKER ERNST
IPC: E06B7/18
Filed: 1964-06-24
Abstract: 1,062,977. Pressure-tight doors. MATHIASTHESEN-WERFT, VEB. June 24, 1964, No. 26118/64. Heading F2P. A fire-prevention door 1 when closed is provided with an additional gas-tight closure operated by one of a pair of hand levers at 10a and 10b mounted level with the top of the door on a rod which passes through the door-frame 2 and is rotated by the lever to cause a number of elements 8 to press a framework 3 with packing rings 4 and 7 against the door 1 and the frame 2, both of which it overlaps; the final position of the operative lever 10a abutting on the end of a wedge 11 on the door which is removed from the lever when the door is opened allowing the latter to turn back to its initial position due to release of pressure from the packing rings on the elements 8. The ring 4 co-operates with a frame 12 around the back of the door 1 and the ring 7 with a ring 5 on the door frame. The elements 8 comprise bushes 8a and 8b with mating helical cam faces, mounted on bolts 6 and connected to the levers by way of a linkage 9.
Patent GB-317248-A (GB)
Title: Improvements in folding hood fittings for road vehicles
IPC: B60J7/12
Filed: 1928-09-12
Abstract: 317,248. Bunn, C. W. Sept. 12, 1928 Hoods.-In hood fittings of the kind having a hinged pillar fitting, an attachment plate, a cant rail and a back stay pivoted to the attachment plate and in which the cant rail is connected to the -back stay by a lever pivoted to the pillar fitting, the folding pillar fitting is connected to the attachment plate by a link. As shown, the pillar fitting comprises a part 1 and upper jaws 2 and is connected to the attachment plate 8 by a link 9. The cant rail 6 is connected at 7 to a cranked lever 4 which is also connected to the back stay 5 at 10 and pivoted to the pillar fitting at 3. The back stay 5 is linked to the pillar fitting by a link 12. The pillar fitting is also connected to the cant rail 6 by links 13, 14, 16. The whole comprises a unit which may be attached to the vehicle body to a wooden pillar and transverse wooden hoop sticks.
Patent GB-1046802-A (GB)
Title: Insulating constructional panels
IPC: E04C2/24
Filed: 1963-07-02
Abstract: 1,046,802. Laminates and laminating. CORRECTA-WERKE G.m.b.H. July 12, 1963 [July 7, 1962], No. 26149/63. Addition to 1,042,302. Heading B5N. The panel of the parent Specification, comprising a hard foam layer and at least one layer of bonded wood shavings formed using organic bonding and cementing agents, is modified by perforating the foam layer so that hot air for drying out the bonding agent may penetrate. Several alternate layers of hard foam and bonded wood shavings may be superimposed, each foam layer being perforated, either during moulding of the layer or by subsequent punching or boring.
Patent GB-261616-A (GB)
Abstract: 261,616. Gollwitzer, N., and Hamaguchi, S. May 3, 1926. Interrupters, mechanical; timing-devices.-An electric switch for controlling the lamp circuits. in an advertising sign comprises a number of contact rods k depending from a fixed plate f which are engaged by insulated contacts e on a plate d which is raised and lowered by cams b, b which are rotated on a motor-driven shaft a. In order that the lamps shall be lit in any desired succession the length of the depending portions of the rods h may be adjusted by movable collars j, the rods being afterwards dropped into holes g in the plate f. The plate d is guided in its movements on pillars k<1>, k<2>. Where more than one switching succession with a single bank of lamps is desired, a number of switches of the type described may be employed in conjunction with a suitable timing-device.
Patent GB-1047762-A (GB)
Title: Comparison microwave radiometers
IPC: G01K11/00
Filed: 1963-07-02
Abstract: 1,047,762. Radio direction-finding. GENERAL MOTORS CORPORATION. July 2, 1963 [July 2, 1962], No. 26169/63. Heading H4D. [Also in Division G1] In a microwave radiometer employing alternate inputs to a receiver from an aerial 10, Fig. 1 (not shown), and from a reference noise source 20 of constant mean power, the duty cycle of the output of the latter is varied so that the mean input to the receiver is equal to that from the aerial. Receiver 16 feeds an error signal generator 22 which controls a pulse generator 24 and the meter 30 gives a direct reading of the aerial output signal. The reference noise source is an argon gas discharge tube mounted in the centre of a waveguide. In another embodiment, Fig. 2 (not shown), the comparison input at terminal 20 is composed of that from a low power source-resistor 38 at 4 K.-switched alternately according to a controlled duty-cycle with that from discharge tube source 12; the former determines the minimum detectable signal and the latter the maximum. The output of receiver 16 after amplification, is passed through a switch 52, which carries the signal during the comparison time and produces an output square wave of amplitude proportional to one-half of the difference between the aerial temperature and the average temperature at the comparison terminal, to a narrow-band amplifier 54. A phase detector 56 indicates signal polarity, and its D.C. output is fed to a recorder 68 and a unit 62. In Fig. 3 (not shown) each cycle of switch 32 operation is divided equally into an " aerial " period, to time t 0 , and an ensuring " reference " period of duration t 2 . The sawtooth waveform of Fig. 3B (not shown) is produced in unit 60 and compared in unit 62 with the output of unit 58 to give a waveform, Fig. 3C (not shown), which is differentiated, Figs. 3D, 3E (not shown), successively in units 64 and 66; the output from the latter, together with that, Fig. 3F (not shown), from a multivibrator 48, is fed to a multivibrator 44 to form a waveform, Fig. 3G (not shown), so that the " on " time of the output from argon source 12 into receiver 16 is as indicated by Fig. 3H (not shown), sufficient to cause the mean reference signal to equal the aerial output. Manual control may replace the automatic operation, the apparatus being " nulled " when the aerial is directed to a background. The apparatus may be used to detect the intrusion of an aircraft into a portion of the sky to which the aerial is directed. The aerial may scan and be utilized in a mapping system.
Patent GB-653785-A (GB)
Title: Process for the manufacture of hydroxy acids
IPC: C07C51/367
Filed: 1948-10-07
Abstract: o-Hydroxybenzoic acids and their salts are prepared from an aqueous solution of an alkali metal salt of an o-halogenobenzoic acid of formula <FORM:0653785/IV (b)/1> where R is hydrogen, halogen or a nitro group, by heating in a closed vessel in the presence of an alkali metal carbonate and a source of copper, followed if desired by acidification of the reaction mixture with a mineral acid, e.g. to pH 3.  The source of copper may be the metal, copper bronze, or a copper salt, or preferably a mixture of copper and cuprous iodide.  When R is a nitro group the reaction temperature is 110-160 DEG  C., e.g. 135-150 DEG  C., and when R is halogen between 160 DEG  and 190 DEG C. 2 - Chloro - and 2 - bromobenzoic acid, 2-bromo-4-nitrobenzoic acid, and 6-nitro-2-chlorobenzoic acids may be used in the process. Examples are given of the preparation of 3-, 4-, and 5-nitrosalicylic acids, and 3- and 4-chlorosalicylic acids. Specification 600,640 is referred to.