baber/WOPTO huggingface dataset:
Patent GB-1144147-A (GB)
Title: Improvements in or relating to semiconductor devices
IPC: H01L29/267
Filed: 1966-05-02
Abstract: 1,144,147. Transistors. SIEMENS A.G. 2 May, 1966 [3 May, 1965], No. 19161/66. Heading H1K. In a semi-conductor device such as metal base transistor, with a metal layer between two semiconductor layers, reflection at the "collector" junction is minimized by employing a semiconductor where the wave number k at the conduction band minima is other than zero (e.g. germanium or silicon) and the average wave number vector in the semi-conductor at the end of the conduction band is made substantially equal to the average wave number vector in the metal. The metal layer is a transition metal, semi-metal (e.g. antimony or bismuth) or an alloy with its composition selected to provide the correct k-number. Orientation of the semi-conductor is utilized since this affects the k-number. Fig. 2 shows a metal base transistor with N-type emitter and collector regions 5 and 7 and intermediate metallic layer 6. The emitter and collector regions are orientated in the same direction. The metal has a high k-value compared with the material of the emitter to give a high "refracting index" in the metal relative to the semi-conductor to produce tightly bunched electron beams. At least the emitter zone should be monocrystalline.
Patent GB-442929-A (GB)
Title: Improvements in magneto-electric machines
IPC: H02K23/36
Filed: 1935-07-05
Abstract: 442,929. Magnetos. BOSCH: AKT.- GES., R., 4, Militarstrasse, Stuttgart, Germany. July 5, 1935, No. 19188. Convention date, July 6, 1934. [Class 35] A magneto is excited by two permanent magnets d<1>, d<2> of high coercive force mounted at opposite ends of the armature a, the direction of the flux being at right-angles to the shaft, and the magnets being connected by two soft iron yoke pieces g, h extending over the whole length of the machine. The armature shaft is mounted directly in the magnets or in. bearing plates i<1>, i2. As shown applied to a continuous current transformer, particularly for use in portable apparatus, such as a wireless set, the armature has two separate commutator windings. The magnets may be formed of an aluminium-nickel steel alloy.
Patent GB-1310372-A (GB)
Title: Phenoxyethylammonium compounds a process for their manufacture and plant growth-regulating preparations containing them
IPC: A01N39/00
Filed: 1970-04-22
Abstract: 1310372 Quaternary ammonium compounds CIBA-GEIGY AG 22 April 1970 [22 April 1969] 19197/70 Heading C2C [Also in Division C1] Compounds of the formula where Y 1  is Cl, Br, CF 3 , NO 2 , CH 3  or amino, Y 2  and Y 3  are H, Cl or NO 2  and X<SP>(-)</SP> is F<SP>(-)</SP>, Cl<SP>(-)</SP>, Br<SP>(-)</SP>, I<SP>(-)</SP>, SO 4 <SP>(2-)</SP> or C 1-4  alky. OSO 3 <SP>(-)</SP>, with the proviso that Y 1  may not be CH 3  when Y 2  and Y 3  are H or Cl, are prepared by quaternizing the tertiary amine.
Patent GB-147156-A (GB)
Title: Tyre valves
IPC: F16K15/20
Filed: 1920-07-07
Abstract: 147,156. Schrader's Son, Inc., A., (Assignees of Henemier, R. H.). Nov. 16, 1915, [Convention date]. Tyre inflating-valves.-A tyre valve of the kind in which the seat 1 is screwed into the valve casing 3 so as to be clear of the top of the casing has the seat formed with a slotted tubular extension 8 adapted to house the valve member and loading spring. The valve member 10 carried by a deflating-pin 11 and the loading-spring 14 are introduced through an aperture in the bottom of the extension 8 which is afterward closed by a perforated plug 15.
Patent GB-682158-A (GB)
Title: Improvements in and relating to casting layers for films and sheets
Inventor: SCHOUTEDEN FERDINAND LEONARD
IPC: B29C48/08
Filed: 1948-07-16
Abstract: A support, such as a polished metal drum or belt, is coated with a solution of a partially hydrolysed polyvinyl acetate, or other polyvinyl ester of a lower fatty acid, in a mixture of water and a water-miscible organic solvent, such as methyl alcohol, drying at least partially, and hardening the coating by exposing it to heat, light or infra-red radiation.  The hardening may be promoted by the addition of a compound which will react with the hydroxyl groups of the partially hydrolysed polymer, suitable compounds being chromates, bichromates, chromic acid, thorium, zirconium, titanium and iron salts, boron compounds, tannic acid, dimethylolurea, glyoxal, phenol-formaldehyde resins, polychlorinated polyalkylene ethers and polycarboxylic acids. The coating may be used as a casting layer for casting films from solutions of film-forming substances such as cellulose derivatives and synthetic resins.  Specification 551,786 is referred to.
Patent GB-184038-A (GB)
Title: Improvements relating to devices for raising and lowering trolleys in systems of electric traction with overhead conductors
IPC: B60L5/32
Filed: 1921-07-18
Abstract: 184,038. Brooks, R., Priestley, A., and Metropolitan-Vickers Electrical Co., Ltd. July 18, 1921. Valves controlled by pilot or relay valves.-The trolly of an electric train is raised and lowered by compressed air controlled by inlet and exhaust valves 4, 10 simultaneously operated by a pneumatic piston 14 operated by compressed air controlled bv inlet and exhaust valves 19, 32 which are actuated by electromagnets 36. The inlet passage 24 leads through a non-return valve 26 to the chamber 29, a by-pass 47 and valve 48 being provided to make up for any leakage past the piston 14. The armature 40 of each electromagnet 36 may have a button 41 to enable the valves 19, 32 to be operated by hand. The circuits of the electromagnets are so arranged that only one can be energized at a time, and they may be connected throughout a train so that they can all be energized by two-way spring-off switches, or a main switch, with removable handles.
Patent GB-498828-A (GB)
Title: Improvements in or relating to a method of preparing catalysts
IPC: B01J37/02
Filed: 1937-07-13
Abstract: A porous carrier is impregnated with a solution of a salt of the catalytic element, and after removal of excess solution from the surface of the carrier the latter is heated to 100 DEG  C. to drive the solution into the surface layer.  A cold concentrated solution of a suitable reagent is then applied to precipitate the catalyst, after which traces of soluble compounds may be removed by washing.  The carrier may be evacuated before impregnation. Three examples describe the deposition in a china clay carrier of cobalt hydroxide, cadmium sulphide, and copper vanadate respectively.
Patent GB-1144606-A (GB)
Title: A welding wire grinding and contacting nozzle
IPC: B23K9/12
Filed: 1966-05-03
Abstract: 1,144,606. Welding by fusion; straightening. SIEMENS - SCHUCKERT WERKE A.G. 3 May, 1966 [3 May, 1965], No. 19548/66. Headings B3E and B3R. In a contact and guide tube for a consumable electrode arc welding torch and having spaced apertured wear-resistant elements 3 housed in a nozzle-like body 1, transverse apertures 6 are provided in the body 1 adjacent the guide elements 3 to allow the escape of material abraded from the electrode. The body 1 may be cylindrical or tapered and the elements 3 may be spaced by distance pieces 4 or pressfitted in a stepped bore, respectively. In a gas shielded torch part of the gas may be passed through the body 1 and the apertures 4. Straightening.-The elements 3 may be transversely adjustable by screw devices to locations in which they straighten an electrode.
Patent GB-1176751-A (GB)
Title: Improvements in or relating to Supports for Rolls of Paper or the like.
IPC: B65H16/06
Filed: 1968-04-25
Abstract: 1,176,751. Feeding webs. SCHNELLPRESSENFABRIK FRANKENTHAL ALBERT & CIE. A.G. 25 April, 1968 [27 April, 1967], No. 19575/68. Heading B8R. A support for a roll of paper or the like in, e.g. a printing machine, comprises a shaft carrying a tongue 1 for engaging the end of the roll, and a bush 3 carrying the bearings 2, 2<SP>1</SP> for the shaft and being mounted on a supporting arm 4, the bush 3 being closed at its end remote from the tongue 1 by a cover 8 of larger diameter than the bush 3 and constituting a piston movable axially by fluid pressure to bring the tongue 1 into engagement with the end of the roll or to retract the tongue for removal of the roll. A space 16 for receiving the cover 8 in the bore of the arm 4 is lined by a bush 7 and is closed at its outer end by a cap 5. Compressed air connections 12, 14 are provided for supplying fluid pressure to one or the other side of the cover 8.
Patent GB-571315-A (GB)
Title: Improvements in or relating to methods of forming adhesive bonds involving the use of cements comprising polyvinyl butyral or in or relating to compositions suitable for use for activating dried coatings of such cements
IPC: C09J129/14
Filed: 1943-11-24
Abstract: Treating a polyvinyl butyral cement with a composition comprising (a) a liquid vehicle comprising both a solvent and a non-solvent for polyvinyl butyral and (b) a body providing agent compatible with polyvinyl butyral and soluble in the liquid vehicle, thus forming an adhesive bond between surfaces coated with said cement.  Body providing agents are polyvinyl acetals and polyvinyl butyral is specified.  The composition has a viscosity of 200 to 2000 centipoises and comprises 8 to 12 per cent polyvinyl butyral and a liquid vehicle which comprises 20 to 55 per cent solvent and 80 to 45 per cent non-solvent.  Solvents specified are methanol, ethanol, isopropanol, methyl acetate, propylene oxide and a methyl acetate-methanol mixture. Non-solvents specified are ethyl ether, isopropyl ether and acetone.  In examples, the margin of a leather shoe upper and the margin of a leather sole are roughened.  To each is then applied a layer of a polyvinylbutyral cement consisting of polyvinylbutyral, ethanol and triethylene glycol di - 2 - ethyl butyrate as plasticizer.  The cement is allowed to dry.  This cement is rendered adhesive by treatment with one of the following compositions: (1) and (8) polyvinylbutyral, ethanol, acetone and ethyl ether; (2) and (3) polyvinyl butyral, methyl acetate, ethanol and ethyl ether; (4) polyvinyl butyral, ethanol, methanol, acetone and ethyl ether; (5) polyvinylbutyral, ethanol, propylene oxide, acetone and ethyl ether; (6) polyvinylbutyral, methyl acetate, ethanol, acetone, and ethyl ether; and (7) polyvinyl butyral, ethyl ether and a methanol-methyl acetate mixture.
Patent GB-1138620-A (GB)
Title: Separation of mixtures of propylene oxide and methyl formate
Inventor: JHAWAR PANNALAL SOHANLAL
IPC: C07D301/32
Filed: 1965-05-10
Abstract: 1,138,620. Separation of propylene oxide/ methyl formate mixtures. IMPERIAL CHEMICAL INDUSTRIES Ltd. 3 May, 1966 [10 May, 1965], No. 19623/65. Heading C2C. Propylene oxide is separated from mixtures containing propylene oxide and methyl formate by extractively distilling the mixture in a column using a hydrocarbon solvent and maintaining the solvent concentration at above 40% by weight of the total liquid present in the extractive section of the column. The hydrocarbon solvents used are less volatile than propylene oxide and are liquid under the distillation conditions. The preferred solvents are paraffin hydrocarbons having 5-10 carbon atoms, naphthenic hydrocarbons having 6-8 carbon atoms, such as cyclohexane and methyl cyclohexane, and aromatic hydrocarbons having 6-8 carbon atoms. Mixtures which also contain acetone may be treated according to the invention.
Patent GB-984855-A (GB)
Title: Improvements in aerial dipoles
Inventor: TABRAM KENNETH GEORGE
IPC: H01Q9/26
Filed: 1963-05-17
Abstract: 984,855. Aerials. BELLING & LEE Ltd. Aug. 2, 1963 [May 17, 1963], No. 19672/63. Heading H4A. A folded dipole for use as a Band IV or V television aerial is formed from a strip of sheet material having contiguous narrow and wide sections bent to form a dipole having a wide limb 2, 3 and a narrow limb 1, one of the limbs having a discontinuity for the connection of a feeder. As described, the discontinuity is in the wide limb and is adapted to be fitted to a junction box 10.
Patent GB-810678-A (GB)
Title: A method of producing copper strip from the powdered metal
IPC: C22C1/04
Filed: 1956-06-26
Abstract: Strip is provided from powdered copper by (i) pre-compacting into strip by cold rolling, (ii) coiling this strip into separate rings, (iii) uncoiling the separate rings and passing them in extended form through a sintering furnace (with a temperature not exceeding 1000 DEG C.); and hot rolling the sintered pieces at between 700 DEG C. and 900 DEG C.  A protective atmosphere such as ammonia is supplied in the furnace which may be of the endless conveyer type.  The heating and hot rolling may be repeated as often as necessary to produce a desired density.  A final anneal may be given.
Patent GB-619972-A (GB)
Title: Quick-drying writing inks
IPC: C09D11/16
Filed: 1946-07-02
Abstract: Phthalocyanine sulphonamides are manufactured by reacting phthalocyanine sulphochlorides with ammonia or with a primary or secondary amine, e.g. as described in Specifications 613,781 and 614,407.  Amines specified, in addition to those enumerated in the said Specifications, are methylamine, ethylamine, propylamine, butylamine, mono- and diethanolamine, cyclohexylamine, aniline, 4-chloroaniline, o-, m- and p-aminophenol, o-, m-and p-toluidine, o-, m- and p-xylidines, morpholine and 1-(31-aminophenyl)-3-methyl-5-pyrazolone.  Examples describe the use, as starting materials, of copper phthalocyanine tetra-, mono- and a mixture of di- and tri-sulphochlorides, a chlorinated copper phthalocyanine sulphochloride, and aluminium and cobalt phthalocyanine tetrasulphochlorides.  Specification 515,637 is referred to. p
Patent GB-147795-A (GB)
Title: An improved method of manufacturing horseshoes
IPC: B21K15/02
Filed: 1920-07-09
Abstract: 147,795. Sheperdson, W. T. Aug. 12, 1918, [Convention date]. Making.-Relates to the manufacture of horseshoes from a continuous length of rolled stock. A bar of the section shown in Fig. 6, or without the shoulder 14, is made by hot rolling. The bar is then split longitudinally along the crease 3. Portions of the rib 2 are then removed by shearing to reduce the bar to the form shown in Fig. 4. The bar is then cut into lengths, alternate projections 9 being divided at their middle sections 10 to form a shoe shown in Fig. 5 when bent into shape. The projections 9 constitute integral heel and toe calks 12, 13. Clips may be drawn from the material of the shoulders 14 which may be rolled with spaced lugs 16, Fig. 9, for that purpose.
Patent GB-728568-A (GB)
Title: Improvements in draft gear for tractor drawn ploughs
IPC: A01B59/042
Filed: 1953-07-17
Abstract: 728,568. Agricultural implements. DODWELL, F. A. July 17, 1953 [Oct. 27, 1952], No. 19826/53. Class 6 (1). Draft gear for attaching a plough to a tractor provided with hydraulic lifting gear comprises a bracket 11 fixed to a plough frame 10 and provided with lugs 12, 13, the lug 13 being provided with a slot. The lugs are attached by pins 16, 17 to a drawbar 14 mounted on the lower links 21, 22 of the tractor hydraulic lifting gear. The slot allows limited lateral angular displacement of the plough with respect to the tractor. The upper link of the lifting gear is replaced by a chain 24 connected to a link 26 and a link 29 which is attached to a structure 28 fixed to the plough frame. Holes 15, 18 are provided on the drawbar 14 so that the plough may be laterally adjustable with respect to the tractor.
Patent GB-408844-A (GB)
Title: Improvements in and relating to acoustic signalling apparatus
IPC: H04R1/34
Filed: 1933-07-13
Abstract: 408,844. Sound-directing appliances. NAAMLOOZE VENNOOTSCHAP MACHINERIEEN-EN APPARATEN FABRIEKEN, 30, Croeselaan, Utrecht, Holland. July 13, 1933, No. 19836. Convention date, Aug. 12, 1932. [Classes 13 and 118 (ii).] In a device for acoustic signalling, sound from a diaphragm B and resonating space C is distributed in a circle or sector in a surface parallel to the diaphragm by hollow guiding means D, E1, E2, forming a channel F tuned to resonance with the sound source. The bodies D, E1, are spaced apart at an adjustable distance small in comparison with the wavelength by distance pieces G and the sound is turned through a right angle by multiple reflections. The inner bounding line of the guiding device preferably constitutes an exponential curve. When the device is used singly the lower portion E2 is used in the position shown in dotted lines so that the foot of the lower guiding member E1 has a height H at least half a wavelength of the sound generated. The units may be assembled into vertical groups in which case the dotted position of E2 indicates part of the next unit. The units may be assembled on a frame, an adjustable gap being left between the bodies E and E2 for regulating within limits the distance between the units and allowing individual units to be withdrawn for replacement.
Patent GB-751955-A (GB)
Title: Improved silver salt diffusion process for the production of positive photographic silver images
IPC: G03C8/06
Filed: 1952-08-06
Abstract: 751,955. Photographic silver-salt diffusion process. AGFA AKT.-GES. FUR PHOTOFABRIKATION. Aug. 6, 1952 [Aug. 9, 1951], No. 19861/52. Class 98 (2). In the process in which a reception layer is brought into contact with an exposed silver halide emulsion layer during immersion in an alkaline developing solution containing a silver halide solvent for image production by transfer and reduction of the unexposed silver halide of the emulsion layer, the reception layer or its support or other adjacent layer contains a neutralizing substance which will react substantially after image production with alkali taken up by the reception layer, whereby yellow stain formation after development is avoided. In examples reception layers for the process are made by (1) soaking a paper foil in aqueous MgHPO 4  and coating thereon a gelatine layer containing colloidal silver, mercaptobenzthiazole and formalin; (2) soaking a paper base in a solution of a boric acid glycerol ester and overcoating as in (1); (3) adding the ester of (2) to the gelatine reception solution of (1) and applying this to photographic base; (4) coating a gelatine solution containing finely ground phthalic anhydride on to a paper base and then the gelatine solution of (1); (5) coating a solution of a saponified cellulose acetate containing the ester of (2) on a paper support and then the gelatine solution of (1). Other slowly soluble neutralizing substances are described. Specifications 614,155, 654,630 and 654,631 are referred to.
Patent GB-1478086-A (GB)
Title: High reliability diversity communications system
IPC: H04L1/02
Filed: 1975-05-12
Abstract: 1478086 Diversity reception RAYTHEON CO 12 May 1975 [27 June 1974] 19899/75 Heading H4L In a diversity receiver system for signals modulated by digital data, e.g. by use of quaternary phase shift keying QPSK, each receiver is arranged to generate a local timing signal from the incoming data, means responsive to the local timing signals to provide a mean timing signal, means for retiming the digital data produced by the receivers to synchronize the data streams with the mean timing signal and switching means for passing a selected one of the retimed digital data streams to an output. Fig. 2 shows one terminal using common antennae 106, 108 for transmitting or receiving. The system preferably operates at a carrier of 7-8 GHz, the antennae 104 being spaced by 40 feet on a common tower. In the transmitting mode, parallel digital data I/O is converted into serial form by multiplexers 234 at a rate of one sixteen bit word per microsecond. Some redundant channels are included to improve reliability. The data is modulated at 226 on to an IF signal 227, the phase of each bit being dependent on the nature of the previous bit. The two transmitters 112, 114 are respectively fed to horizontally and vertically polarized radiators 108, 106. In the receiving mode, two receivers 212 are respectively fed from vertically and horizontally polarized antennae 106, 108, each receiver having a respective timing pulse extractor (Fig. 6, not shown), the timing pulses being compared at 218 and a mean timing pulse train is generated as a result (Fig. 4, not shown). Provision is made for selecting the receiver providing the better signal and for inhibiting the diversity switch 216 when the data streams are separated by more than one half bit period. The switching between receivers is achieved by a " hitless " switch (Fig. 5, not shown) which ensures that the switching is only done at data transition times so that no data is lost upon switching. Reference is made to monitoring the bit error rate or to comparing the received signals with a given input so as to determine which receiver is to be operative. Fig. 12 (not shown) relates to a table showing the action of the system under various fault conditions.
Patent GB-199265-A (GB)
Abstract: 199,265. Stokes, G. E. June 30, 1922. Addition to 148,646. No Patent granted (Sealing fee not paid). Feeding webs.-The stamp affixing and cancelling machine of the parent Specification is modified by employing a continuous tape A for advancing the strip of stamps K, the tape A being passed over rollers B - - G, one of which is rotated intermittently by ratchet and rack-andpinion mechanism H, J.
Patent GB-1098486-A (GB)
Title: Improvements in and relating to electric switches
Inventor: HOWELLS JOHN RAYMOND
IPC: H01H3/22
Filed: 1964-05-13
Abstract: 1,098,486. Electromagnetic switches-inertia switches. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. May 10, 1965 [May 13, 1964], No. 19929/64. Heading H2B. On de-energization of electromagnet 5, armature 16 and a support frame 6, 7, 8, 9 move downwardly under the influence of springs or gravity and the cross-bar 9 strikes an anvil 10, 11 carrying fixed contacts e.g. 12 and causes a contact bridge 22, resiliently mounted on the frame 6, 7, 8, 9, to disengage the fixed contacts. The contact bridge 22 is held in engagement with the fixed contacts by spring pressure and by a permanent magnet 29 which attracts a magnetic spigot 24 secured to the bridge 22. The bridge 22 is held in its lower position by the attraction between an annular permanent magnet 31 and a magnetic strip 23, secured to the bridge. The anvil 10, 11 is resiliently supported by spring blades 19. Upward movement of frame 6, 7, 8, 9 is limited by a table 33 secured to a base 1. More than two series connected contact pairs may be simultaneously actuated.
Patent GB-680419-A (GB)
Title: Improvements in or relating to method and apparatus for shaping glass
IPC: C03B23/03
Filed: 1951-08-24
Abstract: 680,419. Glass manufacture. PITTSBURGH PLATE GLASS CO. Aug. 24, 1951 [Sept. 13, 1950], No. 19985/51. Class 56. Sheet glass, for example for lenses or mirrors, is shaped to compound curvature by being supported on a hollow frame 20 for passage through a furnace 10. The sheet thus sags and takes an initial curved shape. The frame is then passed to register between two complementary press members 30, 31 and the lower one is raised to pass through the hollow frame 10 and to engage and raise the partially shaped glass into contact with the upper press member. After final pressing and setting the lower press member descends and redeposits the shaped glass on the frame 20 from which it may be taken for any further treatment. The moulds may be of graphite and may be covered with glass fibre fabric.