baber/WOPTO huggingface dataset:
Patent GB-965244-A (GB)
Title: Improvements in or relating to wave-guide devices
IPC: H01P1/165
Filed: 1960-12-13
Abstract: 965,244. Waveguide switches. PHILIPS ELECTRICAL INDUSTRIES Ltd. Dec. 13, 1960 [Dec. 16, 1959], No. 42851/60. Heading H1W. The direction of polarization of a plane wave within circular waveguide 2 and hence its distribution between outputs 12, 14 is determined by the disposition of a twistable conductive strip S 1 . Assuming that the untwisted strip lies in the plane of the drawing, an input wave polarized at right-angles to this plane will propagate from the rectangular input guide 1 to the rectangular output guide 14 without change. The strip is fixed at one end 4, 5 to the sides of the guide 2 and at the other end 7, 9 to a rotatable ring C whereby a variable degree of twist may be imparted to it. The plane of polarization of the wave is rotated through an angle equal to the angle of twist. Rotated waves have components lying in the direction of a probe 10 and these components are transferred to the guide 12. By means of an additional conductive strip S 3  arranged in the plane of the drawing one quarter-wavelength from the probe, the part of waveguide 2 lying beyond the probe is arranged to present an infinite impedance to wave components lying in the plane of the probe. Both the strips S 1 , S 3  have transverse slits which prevent generation of unwanted modes. Components polarized at right-angles to the probe are transmitted to the guide 14. Wave energy reflected from mismatches in the guide 14 is polarized at right-angles to the plane of the drawing and can be resolved into components lying in a direction co-incident with the rotated edge of the strip S 1  and at right-angles to this direction. The former component is absorbed by a lossy strip S 2  forming an extension of the strip S 1 . In the absence of the strip S 2  this component would be reflected into the guide 12. The other component propagates back along the strip S 1  into the guide 1.
Patent GB-1246022-A (GB)
Title: Method of manufacturing semiconductor devices
IPC: H01L21/306
Filed: 1969-08-28
Abstract: 1,246,022. Semi-conductor devices. HITACHI Ltd. 28 Aug., 1969 [14 Sept., 1968], No. 42906/69. Heading H1K. A semi-conductor device having a bevelled peripheral surface is manufactured by scribing an endless groove 19 in a main surface of a wafer to produce a mechanically strained layer 20 adjacent to the groove encompassing a device formed in the wafer and then etching the groove mechanically to drive it into the wafer. The device described comprises a P+type layer separated from an N+type layer by an N-type layer, and the etching of the groove is continued until it extends at least through the N-type layer if not through the wafer, so that a peripheral surface at an angle to the PN junction 16 is formed around the device. The groove 19 is initially formed by scribing with a diamond cutter to a depth of 10-15 microns whilst the wafer is fixed to a support wafer 18 by Apiezon wax 17. During etching, surfaces not to be attacked by the etchant are protected by a wax layer.
Patent GB-1100540-A (GB)
Title: Heat treating device
Inventor: MENCACCI SAMUEL ALFRED
IPC: A23L3/06
Filed: 1966-09-27
Abstract: 1,100,540. Heating food in cans &c. INTERNATIONAL MACHINERY CORPORATION S.A. 27 Sept., 1966 [28 Oct., 1965], No. 43066/66. Heading A2D. A pressurized rotary cooker 6 of the reel and spiral type in which a cansupporting reel 7 rotates within a heated cylindrical housing 8 having spiral guides 9 on its internal surface such that sealed cans of food disposed with their long axis parallel to the length of the reel 7 are moved along the length of the spiral 9, has additionally a rotating drum 11 inside the reel 7, the can-supporting rails 10 being so dimensioned that the cans project through the rails so as to rest on and be rotated by the drum 11 while in the upper portion of the cooker 6 in addition to the usual rotation produced by their contact with the housing 8 while in the lower portion of the cooker 6. The rails 10 are supported on blocks 62 mounted on spokes 60 of the reel 7. Additional support for the rails 10 is provided midway along their length by a stiffening ring 70 bearing blocks 62<SP>1</SP> and positioned within a recessed channel 76 in the drum 11. To preclude jamming of the cans whilst being transported in the vicinity of the ring 70, the spiral 9 has a lead only in the lower portion of the cooker 6. The cans are fed into and discharged from the cooker 6 by known rotary valve mechanisms. The apparatus may also be applied to the cooling of heated cans.
Patent GB-961914-A (GB)
Title: Improvements in or relating to detecting apparatus
IPC: G01N29/04
Filed: 1962-11-15
Abstract: 961,914. Measuring surface roughness. H. BIEL. Nov. 15, 1962 [Nov. 16, 1961 ], No. 43178/62. Heading G1N. A feeler gauge for detecting surface imperfections on a moving web P (Fig. 2) comprises a piezo crystal 14 mechanically in contact with the surface of the web, carrying a mass 17, whereby the surface imperfections cause the mass 17 to vibrate, producing a proportional output voltage signal from the crystal 14. The feeler is mounted on a rigid plate clamped between rubber strips 8, 9 to a machine frame. The low frequency cut off point is determined by the weight of the mass 17; the high frequency cut off point is determined by a rubber washer 19, or by an external electronic filter (not shown). Two feelers may be employed, scanning the upper and lower surfaces of the web simultaneously. The piezo crystal may alternatively be a variable inductor or capacitor, and the signal may be used to cut out faulty sections of the web.
Patent GB-1271812-A (GB)
Title: Sample injection device
Inventor: HARDING ALBERT FREDERICK
IPC: G01N30/18
Filed: 1969-09-02
Abstract: 1,271,812. Chromatographic sample injection. BRITISH PETROLEUM CO. Ltd. 14 Aug., 1970 [2 Sept., 1969], No. 43311/69. Heading B1X Part B. An injection port for high pressure gas chromatography comprises a housing 3 having two or more self sealing septa 4 e.g. of rubber, polyvinyl chloride, polyethylene, polypropylene, polyesters or silicone rubber, each being supported by a respective rigid disc 1 e.g. of stainless steel, apertured to allow passage of a syringe. A nut 2 allows for tightening of the septa within the housing. Liquid hydrocarbons may be injected.
Patent GB-1184070-A (GB)
Title: Improvements in or relating to Air Filters
Inventor: KAWANAMI SHUNPEI
IPC: B01D46/04
Filed: 1967-09-22
Abstract: 1,184,070. Air filter. SANKO SIESAKUSHO K.K. 22 Sept., 1967, No. 43341/67. Heading BIT. [Also in Division F2] An air filter comprises an inward-flow element 3, 4 of wool felt which is cleaned by reverse-flow when a piston 17 descends in cylinder 5, which forms a path for filtered air to outlet 7, piston 17 being depressed by delivering compressed air into upper cylinder 18 above piston 22 through valve 20. Valve 20 is moved by an electromagnet 19, whereupon the air in chamber 21 is sufficient to depress piston 22, against spring 23, and the pressure in chamber 21 is down to atmospheric when piston 22 reaches the end of its stroke. After an interval, while dust blown and shaken from the element settles, valve 20 is closed and the pistons rise. The inlet 25 supplying compressed air to chamber 21 is restricted and the chamber is re-pressurised during the next filtering cycle. The element shown comprises two concentric tubes, but alternative arrangements (Figs. 2, 3, not shown) are a plurality of single tubes, or a mixture of single and concentric tubes in one housing. Piston 17 has a peripheral gasket of rubber, plastics, metal or carbon (Figs. 4, 5, not shown).
Patent GB-842859-A (GB)
Title: Improvements relating to belt conveyors
Inventor: SMITH WALTER ARTHUR
IPC: B65G17/02
Filed: 1955-12-08
Abstract: 842,859. Endless belt conveyers. CHARROLD Ltd. Dec. 5, 1956 [Dec. 8, 1955], No. 43358/59. Divided out of 842,858. Class 78 (1). In an endless-belt conveyer for use in vehicle bodies to form a moving floor therefore the belt 1 is secured at intervals along its longitudinal edges to a pair of driving-chains 2 by cleats 5, each of which comprises a U-shaped part 51 to receive the belt edge and an L-shaped part 52 which is so connected with the U-shaped part, e.g. by a pin-and-slot connection 6, 7, as to allow both up-and-down and turning movements of the part 51 with respect to the part 5<2>, the L-shaped part being in turn connected with a bracket 4 on the chain 2 by a similar connection to allow pivoting about a vertical axis and in- and-out movement of the L-shaped part with respect to the bracket 4.
Patent GB-1326765-A (GB)
Title: Continuous separation of fluid mixtures on a fixed bed of solids
IPC: B01D53/04
Filed: 1970-09-11
Abstract: 1326765 Chromatography; fluid separation MAGYAR ASVANYOLAJ ES FOLDGAZ KISERLETI INTEZET 11 Sept 1970 [2 Oct 1969] 43494/70 Headings B1L and B1X The continuous separation of fluid mixtures utilising a closed fluid circulation system incorporating at least one adsorbent containing column. As shown two columns are split into zones 1-XX of identical flow resistance by means of selectively operable inlet and outlet ports e.g. P 1 -P 7 . The zones are grouped to form functional regions which at any one time are respectively on adsorption, desorption, cooling endepution. These regions are periodically advanced around the system. Fluid flow is maintained either by selectively operable blocking devices located between each adjacent zone or by the provision of a compensating back pressure between the first and last functional regions i.e. between zones XIII and XVIII.
Patent GB-1520419-A (GB)
Title: Electromagnetic waveguide
IPC: H01P1/163
Filed: 1974-10-10
Abstract: 1520419 Waveguides for the circular-electric mode POST OFFICE 9 Oct 1975 [10 Oct 1974] 43892/74 Heading H1W The radial spacing between the inner and outer tubular members of a screened waveguide intended for propagation of the TE 01  circular electric mode is adjusted to an optimal value as regards bend loss. The spacing lies between 0À54 mm. and 0À60 mm. In such a waveguide, the inner member may consist of a helix of copper wire, the screen of aluminium and the filling between these members of an epoxy resin loaded with iron to provide loss. It is stated that if the thickness of this filling is less than 2% of the diameter of the waveguide, a reduction in bend loss is obtained.
Patent GB-984916-A (GB)
Title: Process for the production of alpha-olefinic alcohols
Inventor: CLEMENT GENEVIEVE
IPC: B01J23/62
Filed: 1962-11-20
Abstract: a -Olefinic alcohols are prepared by contacting gaseous hydrogen with an a -hydroperoxide of an olefinic hydrocarbon having at least 4 carbon atoms, the hydroperoxide being dissolved in a liquid hydrocarbon containing a hydrophilic solvent, and the catalyst containing metallic palladium treated with a compound of lead and/or bismuth and with a nitrogen-containing organic base. The hydrocarbon used as solvent may be saturated or unsaturated and acyclic or cyclic, e.g. butane, hexane, dodecane, cyclohexane, decahydronaphthalene, heptene, cyclohexene, benzene or xylene or mixtures thereof. If desired the olefinic hydrocarbon from which the hydroperoxide is derived may be used as solvent.  Suitable hydrophilic solvents are, for example, methyl alcohol, ethyl alcohol, isopropyl alcohol, acetone, dioxan, ethyl ether or ethyl acetate. Suitable organic bases are, for example, amines having 2-30 carbon atoms.  The preferred base is quinoline.  A compound which is reduced to a base under reaction conditions, for example, nitrobenzene may be used. The preferred temperature range for the reaction is 5-40 DEG C.  Examples are given of the preparation of cyclohexenol. Specification 13298/1915 is referred to.ALSO:A catalyst for use in the hydrogenation of hydroperoxides contains metallic palladium treated with a compound of lead and/or bismuth and with a nitrogen-containing organic base.  The catalyst may be prepared by reducing an oxide or salt of palladium and treating the metallic palladium so formed with a salt of lead and/or bismuth in an appropriate solvent, followed by treatment with the base which is preferably an aliphatic, cycloaliphatic, aromatic or mixed amine having 2-30 carbon atoms. The most suitable base is quinoline.  The treatment with the base may take place either prior to the hydrogenation or the base may be incorporated into the reaction mixture.  If desired the catalyst may be used on a conventional support.  Examples are given of the use of catalysts treated with lead acetate or bismuth nitrate and with quinoline, pyridine, aniline, a -naphthylbenzylamine, diethylamine, n-hexylamine. Specification 13298/1915 is referred to.
Patent GB-1462600-A (GB)
Title: Preparation of carbon-rich ferrous surfaces to receive a ceramic coating involving electrolytic treatment
IPC: C23C24/08
Filed: 1975-10-27
Abstract: 1462600 Enamelling FERRO CORP 27 Oct 1975 [23 Dec 1974 2 Sept 1975] 44122/75 Heading C1M [Also in Division C7] A frit comprising:- is applied to a ferrous workpiece as an aqueous slip and the coating is dried and fused at 1200- 1600 F., after the application of a pure iron layer (e.g. by pressure bonding or electrodeposition) followed by electrolytic treatment to give a fissured surface.
Patent GB-920369-A (GB)
Title: Plate heat exchangers
IPC: F28F3/08
Filed: 1960-12-23
Abstract: 920,369. Plate-type heat exchangers. SEPARATOR A.B. Dec. 23, 1960 [Dec. 23, 1959], No. 44272/60. Class 64 (3). A plate heat exchanger contains within its interspaces turbulence - furthering perforated members 9 which are detachably carried by the corrugated plates 1 by means of knobs 11, hooks, or by means of the marginal packing cord 2. In the form shown, each plate 1 within a marginal packing cord 2 is corrugated, such that the turbulence-furthering member 9 which may be corrugated or planar, is clamped between the wave crests 14, 15, 16 and is deformed into waves. The perforations 12 cause the liquid to circulate through the plate interspaces in a zig-zag manner. Alternatively the inner edge of the packing cord may be provided with a groove or recess into which the edge of the perforated member is engaged, so eliminating the necessity of a catch or hook (Fig. 4, not shown).
Patent GB-1347335-A (GB)
Title: Process and device for the spinning of melts or solutions of synthetic high polymers
IPC: B29C48/69
Filed: 1971-09-23
Abstract: 1347335 Spinning apparatus FARBWERKE HOECHST AG 23 Sept 1971 [23 Sept 1970] 44433/71 Heading B5B Apparatus for spinning melts or solutions of synthetic polymers comprises a filter pack 1, metal sieve plates 2, distributer plate 3 and spinneret plate 5, the gap between the distributer and spinneret plates being filled or partially filled by an inert fine-pored coherent medium 4, suitably a sintered porous metal or metal fleece or one or more metal mesh sieves having a mesh number in the range 50 to 40,000 meshes per sq. cm., which does not melt or decompose at the spinning temperature. The apparatus may be used with all high polymers which can be spun from a melt or solution, the melt-spinning of polyethylene terephthalate filaments is exemplified.
Patent GB-989076-A (GB)
Title: Improvements in or relating to looms
IPC: D03D49/06
Filed: 1961-12-12
Abstract: 989, 076. Warp tension control. RUTI MACHINERY WORKS Ltd. Dec. 12, 1961 [Jan. 12, 1961], No. 44529/61. Heading D1E. A movable back rest 11, connected to a weight arm 24 having a connection 29 to let off the warp, has an adjustable hydraulic damper 16 which, when the rest 11 is moved downwardly under increased warp tension, damps the movement but, when the rest 11 moves upwardly under decreased tension, does not damp the movement. This is said to avoid "starting places" in the fabric which result on loom stoppage. The weight arm 24 may be replaced by a torsion spring 50 (Fig. 2).
Patent GB-1116798-A (GB)
Title: Epoxy resin curing agents
IPC: C07C51/567
Filed: 1965-10-26
Abstract: Epoxy resins are cured with mixtures of liquid, isomeric cyclo olefinic anhydrides, prepared by catalytic isomerization of a solid cyclo olefinic anhydride (see Division C2).  In examples, mixtures of D 1 - and D 4 - isomers of tetrahydro phthalic acid anhydride, and of its 3- or 4-methyl derivatives are used to cure an epoxy resin derived from bisphenol A and diglycidyl ether.ALSO:Mixtures of isomeric cyclo olefinic acid anhydrides, liquid at ambient temperatures, are made by heating a normally solid cyclo olefinic acid anhydride to above its M.P., isomerizing the molten anhydride in an anhydrous atmosphere in the presence of a solid, particulate, acid isomerization catalyst which is insoluble in the anhydride at contact conditions including a temp. in the range 100-250 DEG  C., a contact time of 5-480 min. and a pressure of 1-5 At., and cooling the liquid obtained.  Specified starting compounds are D 4-tetrahydro-phthalic anhydride, and its 3- and 4-methyl derivatives.  The catalyst may be a silica-alumina, or an ion-exchange resin. The products are used to cure epoxy resins (see Division C3).
Patent GB-1113313-A (GB)
Title: Silver aluminate
Inventor: THILO ERICH
IPC: C01G5/00
Filed: 1965-10-26
Abstract: The invention comprises silver aluminate (AgAlO2).  It may be prepared by reacting a metal aluminate with at least one silver salt in a melt of an excess of the silver salt and the silver aluminate may subsequently be freed from other components by washing.  The preferred temperature is about 300 DEG  C. and the reaction may last about 1 to 3 days.  The reaction may be carried out in the presence of a melting adjuvant, preferably an alkali metal salt or mixtures thereof, which may be used in place of the excess of the silver salt. Alternatively the silver aluminate may be prepared by reacting at least one solid anhydrous metal aluminate with at least one silver salt having a concentration sufficiently high to prevent dissolution of the aluminate in solution in a solvent or solvent mixture and the silver aluminate obtained may be freed from other components by washing.  The reaction is carried out with shaking preferably at room temperature.  The silver salt may be used in the form of a saturated solution at the reaction temperature and may be a technical silver salt which may also contain at least one alkali metal salt. Preferably the silver salt is silver nitrate and the metal aluminate an alkali or alkaline earth metal aluminate.  The silver aluminate may be reduced with hydrogen to silver and alumina.
Patent GB-1524379-A (GB)
Title: Precisely-structured electrochemical cell electrode and method of making same
IPC: C25B11/06
Filed: 1975-10-31
Abstract: 1524379 Layer containing gas electrode UNITED TECHNOLOGIES CORP 31 Oct 1975 [18 Dec 1974] 45529/75 Heading H1B An electrochemical cell electrode comprising hydrophobic regions 12, e.g. PTFE and porous hydrophilic catalyst containing regions 13, e.g. Pt on carbon black characterized in that the interface between the regions is continuous and extends across the thickness of the electrode. The alternate layers may be produced by a filtration technique and the resulting electrode used as a gas electrode in a fuel cell.
Patent GB-1435287-A (GB)
Title: Process for preparing a lysine-precursor
IPC: C07C239/00
Filed: 1974-10-22
Abstract: 1435287 N - carboxy - α - chloro - # - aminocaproic acids STAMICARBON BV 22 Oct 1974 [26 Oct 1973] 45627/74 Heading C2C Novel caproic acid derivatives of general formula or salts thereof, where R is a C 1-12  hydrocarbon group, and the corresponding lactam are prepared by reacting an appropriate N-alkoxycarbonyl substituted 2-chloro-azacycloheptene- 2 with a hypochlorite to give the corresponding α-chloro-#-caprolactam which is converted to the desired caproic acid derivative (I) by hydrolysis. In the examples N-methoxycarbonyl - α - chloro - # - aminocaproic acid is prepared. Lysine is obtained from a compound of Formula (I) by aminolysis and hydrolysis of the intermediate.
Patent GB-1123792-A (GB)
Title: Improvements in or relating to oil heaters
Inventor: BOWEN IDRIS GWYNNE
IPC: F23K5/20
Filed: 1963-11-19
Abstract: 1,123,792. Oil heaters. INTERNATIONAL COMBUSTION (HOLDINGS) Ltd. 19 Feb., 1965 [19 Nov., 1963], No. 45709/63. Heading F4S. An oil heating installation comprises a steam flow path 2 in heat exchange with an oil flow path 1, an oil by-pass 6 not in heat exchange relationship with either path, a valve 5 (shown as a three-way valve operable mechanically, electrically or hydraulically) controlling the flow through the oil by-pass, and, located downstream with reference to oil flow, of the junction between the output of the oil flow path and the by-pass conduit, a thermally responsive element 10 exposed to the oil temperature at that location and operatively connected through a controller 11 to the oil flow control valve 5 to regulate the oil flow through the by-pass conduit 6. In a further arrangement (Fig. 2) the controller 11 also operates a valve (13) in the steam supply line to reduce steam flow as the oil temperature increases, the steam pressure being prevented from falling below a predetermined minimum slightly in excess of the oil pressure in the oil supply conduit, by a pressure reducing valve (14) connected in the steam supply line in parallel with the steam control valve (13). In use, the controller 11 operates the steam valve 13 through a first range of oil temperature, and the oil control valve 5 over a second and higher range of temperature. Alternatively the controller may operate first the oil control valve 5 and then the steam valve, or these valves may operate over overlapping temperature ranges.
Patent GB-1158583-A (GB)
Title: Improvements relating to Silos or other Cylindrical Structures
Inventor: BORROW EDGAR WILFRED
IPC: B65D90/08
Filed: 1965-10-29
Abstract: 1,158,583. Seaming; welding by pressure. E. W. BORROW. 25 Oct., 1966 [29 Oct., 1965], No. 45808/65. Headings B3J and B3R. A seam between two metal plates 5, 6 in a cylindrical structure comprises interengaged folded-over portions 7, 8 and nut-and-bolt couplings 12, 13 or spot-welding. The seam may be used to connect adjacent metal plates forming a ring or rings of plates used in constructing a grain silo. The joint-surfaces may be coated with a sealing compound, and a third metal sheet, e.g. a bracket 14, Fig. 3 (not shown), may be included in the seam.
Patent GB-971759-A (GB)
Title: A thermionic energy converter and a method of converting thermal energy to electrical energy
IPC: H01J45/00
Filed: 1961-12-21
Abstract: 971,759. Thermionic energy converters. SIEMENS-SCHUCKERTWERKE A.G. Dec. 21, 1961 [Dec. 29, 1960], No. 45954/61. Heading H1D. In a method of converting heat into electrical energy, a'mixture of a gaseous carrier medium and a finely divided metal is passed around a closed circuit, with the aid of a compressor 9. The mixture is heated at one point in the circuit and flows past a cathode 3, at which the metal is ionized, and then past an anode 6 to which the ions give up their charge, whereby a potential difference is set up between the anode and cathode. As shown, the mixture is heated by a furnace 2 to 1500 C., and the cathode 3, of W, Ta or Mo, is formed as a Laval nozzle so that the heated mixture reaches speeds of the order of the speed of sound. The carrier medium may be a gas or a vapour and the metal may be chosen from the first main group of the Periodic System. The proportion of ionized atoms, e.g. 1 per 1000, and the cathode temperature may be adjusted to give a desired output voltage, e.g. 150 v. The speed of the mixture may be periodically varied, or even reversed, to generate an alternating voltage. The mixture may be cooled in a condenser 8 or the heat content thereof may be used by a second thermionic converter operating at a lower temperature or by thermoelectric couples.