baber/WOPTO huggingface dataset:
Patent GB-1267319-A (GB)
Title: Multitrack magnetic recording head
Inventor: UNDERWOOD JOHN DUCKLES
IPC: G11B5/49
Filed: 1970-11-16
Abstract: 1,267,319. Magnetic heads. STANDARD TELEPHONES & CABLES Ltd. 16 Nov., 1970, No. 54402/70. Heading G5R. A multitrack magnetic head comprises a plurality of individual heads arranged side by side, each individual head including two conductive strips joined at one end by a conductive link to form substantially a U-shape around which in the region of the link is located a gapped loop of ferromagnetic material. The multitrack head may be formed by etching, cutting and folding as shown in: Fig. 2. a laminate comprising layers of a plastics material 1, copper 2 and nickel iron 3. Alternatively, Fig. 4 (not shown), a laminate of copper and polyester is selectively etched and the gapped ferromagnetic loops are formed either by deposition or by hooking the teeth of a comb-like structure of ferromagnetic material round the conductive links and then parting the spine of the comb from the teeth which are held in position by encapsulation.
Patent GB-1456299-A (GB)
Title: Process for the manufacture of cyclic compounds
IPC: C07C69/017
Filed: 1974-12-20
Abstract: 1456299 Cyclic ketones; steroids F HOFFMANN-LA ROCHE & CO AG 20 Dec 1974 [21 Dec 1973] 55145/74 Headings C2C and C2U The invention comprises a process for preparing compounds of the formula where R<SP>1</SP> and R<SP>2</SP> are H, amino, OR<SP>5</SP>, OCOR<SP>6</SP> or NHCOR<SP>5</SP>, R<SP>3</SP> is C 1 -C 7  alkyl, R<SP>4</SP> is an oxygen function, R<SP>5</SP> is H or C 1 -C 7  alkyl, R<SP>6</SP> is C 1 -C 7  alkyl or phenyl and n is 1 or 2, by reacting a compound of the formula where X is OR<SP>11</SP>, N(R<SP>12</SP>) 2 , SR<SP>11</SP>, N<SP>+</SP>(R<SP>12</SP>) 3 , -S<SP>+</SP>(R<SP>12</SP>) 2  or where R<SP>11</SP> i H or C 1 -C 7  alkyl, acetyl or benzoyl, R<SP>12</SP> is C 1 -C 7  alkyl and m is 1 or 2, with a compound of the formula where R<SP>7</SP> and R<SP>8</SP> are H, amino, OR<SP>5</SP>, OCOR<SP>6</SP>, NHCOR<SP>5</SP>, NO 2 , benzyloxy, diphenylmethoxy or triphenylmethoxy, R<SP>9</SP> is H, CN or COOR<SP>10</SP> where R<SP>10</SP> is C 1 -C 7  alkyl or benzyl in the presence of a base, or with an alkali salt of a compound of Formula III, to give a compound of the formula saponifying the CN or COOR<SP>10</SP> group to the carboxyl group and decarboxylating, and hydrogenating the product in the presence of a noble metal or nickel catalyst. The invention further comprises compounds of the formula where R<SP>41</SP> is an etherified hydroxy group and R<SP>1</SP>, R<SP>2</SP>, R<SP>3</SP> and n are as defined above with the proviso that R 5  is other than a C 1 -C 7  alkyl group when n is 1 or R<SP>2</SP> is other than a hydrogen atom. The compounds I may be cyclized and hydrogenated to give steroids, e.g. 17#-tert-butoxy-3- methoxyestra - 1,3,5(10) - triene and - 1,3,5(10), 9(11)-tetraene.
Patent GB-1200179-A (GB)
Title: Furnace grate for use in effecting combustion of solid fuel
Inventor: PIETERSE MARIUS VAN UYE
IPC: F23H9/12
Filed: 1966-12-09
Abstract: 1,200,179. Furnace grates. STOOKWERK N.V. 2 Nov., 1967 [9 Dec., 1966], No. 55387/66. Heading F4B. A furnace grate includes a group of fire-bars arranged in side-by-side relationship, every alternate fire-bar 5 of a group being capable of longitudinal movement relative to the fixed remaining fire-bars 6. The firebars, which are compressed on both longitudinal sides by helical springs (14, Fig. 2), are provided with a series of recesses or passages which in the inactive position of the grate form round holes or borings, the arrangement being such that on rocking, the moving bars break or granulate the cinders which then pass into and between the recesses. As shown, the bars 5 are connected by fixed shafts 7 and pins 9 to an hydraulic piston-andcylinder device 11, the shafts 7 being connected by short links 12 to a pin 13 such that by reciprocating the piston the bars 5 move to and fro. The recesses or holes are round and tapered with the smallest diameter at the lower end, the ash passing therethrough collecting in a hollow bearer 2 at the bottom of the furnace 3. The top of each firebar can be provided with a series of projecting pins 16 to promote the granulating of the cinders.
Patent GB-1276848-A (GB)
Title: Contact breaker assemblies
Inventor: FRY WILLIAM LAWRENCE
IPC: H01R39/60
Filed: 1968-11-22
Abstract: 1276848 Mechanical interrupters JOSEPH LUCAS (INDUSTRIES) Ltd 10 Nov 1969 [22 Nov 1968] 55520/68 Heading H1N A contact breaker heel subassembly includes an insulating heel 11 having a pair of shoulders 16, 17, and a conductive shell 18 engaged with heel 11, heel 11 being received between the limbs 21, 22 of shell 18, shoulders 16, 17 engaging opposite ends of shell 18 and thereby resisting longitudinal movement of shell 18 and limb 22 including an integral protrusion 25 which bites into shoulder 17 and thereby resists movement of shell 18 in a direction parallel to limbs 21, 22. After assembly heel 11 and shell 18 are riveted together. The sub-assembly forms part of a contact breaker assembly for an ignition distributer for a road vehicle.
Patent GB-556772-A (GB)
Abstract: 556,772. Heating and cooking stoves. WITT, G. DE., McCARRON, E. T., and O'HARA, J J. Feb. 17, 1942. No. 2089. [Class 126] A heating and cooking stove comprises a firebox 10, Fig. 1. fitted with a door 12 provided with adjustable air inlets 13, and provided with a hot plate 28 forming the floor of an oven 2. The combustion gases are caused to pass in a sinusoidal path around the back and sides of the oven by baffles 7, 8, 9 arranged between the oven and the outer casing 1. The front of the oven is fitted with a removable door 22 and the hot plate 28 may be formed with hob-rings. The bottom of the firebox is formed by a fixed grid 15 and an adjustable grid 19 to enable either coal, wood blocks or peat to be burnt as fuel. Fig. 4 shows another construction in which a number of ovens 2, 2a, 2b are disposed one above the other and the fuel is fed through tapering compartments 25 at the side to arcuate grids 15, 19. The outer casing may have removable doors 1a, 1b carrying the baffles to facilitate cleaning. Fig. 6 shows another construction in which the oven 2 is set partially over the firebox and partly over a flue passage 29 above cool oven 38. A hot water boiler 30 may be provided in the firebox. A removable bolster 40 may be provided on the hot plate to minimize loss of heat. Other constructions are described in which the stove is of cylindrical or elliptical form, a semicylindrical oven being arranged above a semicylindrical firebox. The Provisional Specification states that the grid or bottom of the firebox may be adjusted vertically by cams on an horizontal shaft.
Patent GB-1235904-A (GB)
Title: Methods and machines for erecting extended subterranean building constructions
Inventor: MORNER JOHANN
IPC: E02D29/05
Filed: 1968-11-25
Abstract: 1235904 Erecting subterranean buildings; tunnels; endless chain excavators J MORNER 25 Nov 1968 [4 Dec 1967 12 Aug 1968] 55776/68 Index F2P 36 A subterranean, tunnel-like building comprising prestressed concrete sections 10 is erected behind an excavating and shoring machine having propped-apart side walls 2 and front bucket chassis 4 which may extend partially Fig. 8 for example or completely Fig. 6, (not shown) across the front face of the ditch. The ditch walls behind the walls 2 of the machine are shored by hollow metal, vertically extending planks 9 propped apart at the top (14) and propped against the erected building sections at the bottom. The machine is advanced by hydraulic jacks 8 which operate against either the in-situ sections or against the metal planks 9. The building sections may each be prefabricated in two parts 10a and 10b, and connected up by reinforcements 31 before being placed in position. To guide the machine along a specified curved route, pressurized liquid may be used in a space 27 Fig. 4, (not shown) at the back of the machine. (For Figures, see next page)
Patent GB-1156618-A (GB)
Title: Broad-Band Antenna
IPC: H01Q7/00
Filed: 1967-12-11
Abstract: 1,156,618. Aerials. ROHDE & SCHWARZ. 11 Dec., 1967 [3 Jan., 1967], No. 56160/67. Heading H4A. An omnidirectional aerial comprises at least three similarly shaped, differently sized, flat, substantially closed loops 1-4, Fig. 1, which are mounted coaxially in one or more substantially horizontal planes above the ground. The peripheral lengths and equivalent diametrical dimensions of successive loops are related by a constant ratio, as in a log-periodic aerial. The loops are connected to a common feeder, either in series or in parallel with each other. An outer loop 5 may be provided, the dimensions of which depart from the common ratio with respect to the loop 4, in order to improve impedance matching. As shown in Fig. 1, the loops are connected in series in the order 1, 3, 4, 2 to feed terminals E 1 ,E 2 . In a second embodiment, (Fig. 2, not shown), the righthand halves of the individual loops are connected in series to one feed terminal, and the lefthand halves of the individual loops are connected in series to the other feed terminal. In a third embodiment (Fig. 3, not shown) the right- and left-hand halves of the loops are connected in series alternately. In a fourth embodiment co-axial feeder cable 7, Fig. 4, is formed in half-loops to a feed-point E, and a conductor 8 externally similar to the cable 7 is formed into the remaining half loops. The outer conductor of the cable 7 and the conductor 8 are connected at a point of symmetry 6 on the outer loop, and at the point E the inner conductor of the cable 7 is connected to the conductor 8. In this way, the aerial is fed as a balanced load from the unbalanced cable 7. Aerials as described may be fed directly or through impedance matching transformers, and reactive components of their impedances may be substantially reduced to zero by adjustment of the heights of the loops above the ground.
Patent GB-1334863-A (GB)
Title: Method of producing polycrystalline diamonds
IPC: B01J3/06
Filed: 1970-11-27
Abstract: 1334863 Synthetic diamond INSTITUT FIZIKI VYSOKIKH DAVLENY AKADEMII NAUK SSSR 27 Nov 1970 [4 Jan 1970] 56622/70 Heading C1A Polycrystalline synthetic diamond is produced by subjecting carbonaceous material to a pressure of at least 80 K.bar and a temperature of at least 1200‹ C. in the presence of a metal catalyst in a reaction chamber provided with heating means and with means for conducting heat from within the chamber to a heat sink outside the chamber whereby the heat of crystallization is conducted from the chamber. Preferably the catalyst in reaction chamber 1 is in the form of a rod 4 placed in the carboncontaining material, the cross-sectional area of said rod being not greater than 0À04 of the cross-sectional area of the reaction chamber in the plane transverse to the direction of maximum heat withdrawal. In a preferred arrangement the inside of the reaction chamber is in thermal contact with the apparatus for creating high pressure and temperature, particularly cooled sections 2, so that said apparatus acts as the heat sink. The heat of crystallization is preferably removed at a rate of at least 25 cals./min. In the preferred embodiment shown in Fig. 1, the rod 4 of metal catalyst acts as the means for conducting heat from the chamber being arranged to contact the carbonaceous material so that one end of the rod is in the centre of the reaction chamber and one end is in contact with cooled sections 2. In an alternative embodiment, Fig. 2, the carbonaceous material 3 is surrounded with an envelope of insulating material 5 having a heat conduction rate not lower than that of graphite, said envelope forming the walls of the reaction chamber 1. The envelope may be made of hexagonal boron nitride or boron carbonitride. The carbonaceous material used may be spectrally pure graphite.
Patent GB-1114880-A (GB)
Title: Web guiding means,more especially for incorporation in a photographic roll printing machine for use with supply rolls of different width
IPC: G03B1/42
Filed: 1966-12-19
Abstract: 1,114,880. Feeding webs. AGFA-GEVAERT A.G. 19 Dec., 1966 [24 Dec., 1965], No. 56721/66. Heading B6B. [Also in Division G2] A web-guiding means is adaptable to accommodate webs of different widths. The web passes from a spool (3) in a cassette (2, Fig. 1, not shown) into the housing of a photographic roll printing machine, where it passes round a direction-changing roller (5) and through guiding means (6) to the printing station. The guiding means comprises a further directionchanging roller 11 which has a number of peripheral grooves 11a, 11b, 11d, 11e arranged symmetrically with respect to a central groove 11c. Roller 11 is mounted on an axially adjustable spindle 12. On a parallel spindle 15 is mounted a rotatable tube 34 carrying two axially displaceable sleeves 18, 19 to which arc-shaped guide plates 20, 21 are fixed. The guide plates can pivot into engagement with the grooves 11a, 11e or 11b, 11d. A two-armed lever 23 pivots on a pin 22 which engages in a hole 34a in tube 34. The ends of the lever are connected by linkages 24, 25 to the sleeves 18, 19, and one end is also connected to a setting lever 27. The plates 20, 21 can be pivoted out of engagement with roller 11 (position of Fig. 3), and then, by actuating lever 27, they can be moved towards or away from each other to suit the width of the web, while still being symmetrical about the centre groove 11c. The sleeves 18, 19 are. normally urged towards each other by a spring 26. Figs. 4, 5 (not shown), are of a modification in which the roller 11 is replaced by a stationary cylinder (30). In this case the two-armed lever and its linkages are disposed within the cylinder. The guide plates are also mounted within the cylinder, with end arms (41a, 41b) projecting through apertures in the cylinder wall, and which can lock into notches (30e-30k).
Patent GB-1426789-A (GB)
Title: Hybrid propellant compositions
IPC: C06B45/10
Filed: 1973-12-07
Abstract: 1426789 Propellants SOC NATIONALE DES POUDRES ET EXPLOSIFS 7 Dec 1973 [19 Dec 1972] 56930/73 Heading C1D The solid fuel component of a hybrid propellant comprises a solid amine and at least 15% by weight of an organic polymeric binder which does not react with the amine and which is hardenable at a temperature lower than the melting point of the amine. Suitable binders are polybutadiene, which may contain -COOH or -OH groups, butadiene-styrene copolymers, butadiene-acrylonitrile copolymers, and unsaturated polyesters. These binders may be used in conjunction with o-, m-, or p-phenylenediamine, 2,4-, 2,6-, 2,3-, 3,4-, or 2,5 - diaminotoluene, urea, or melamine. Other binders specified are carboxytelechelate butadiene polymers and copolymers and polyurethanes, which binders may be used with only some of the amines specified above. Examples describe methods of preparation of the fuels, which may also contain specified cross-linking agents, plasticizers, anti-oxidants, wetting agents, vulcanization accelerators, and catalysts. The liquid oxidizer component of the hybrid propellant may be nitric acid or a nitrogen oxide.
Patent GB-1483730-A (GB)
Title: Heat exchanger assemblies
IPC: F28B9/06
Filed: 1973-12-08
Abstract: 1483730 Air cooled heat exchangers GKN BIRWELCO Ltd 4 Dec 1974 [8 Dec 1973] 57001/73 Heading F4S In an air-cooled heat exchanger, e.g. a natural or forced draught cooling tower, comprising a plurality of heat exchange assemblies each consisting of parallel finned tubes 45 extending between headers and arranged in inclined banks 34, 35 disposed to form "V" or "A" frames, with the tubes in each bank being arranged with their longitudinal axes parallel to the apex of the frame, the finned tubes of the banks substantially fill the apex of each frame, whereby cooling air flows through each apex generally vertically and in doing so passes over a plurality of said tubes in succession. Fluid, e.g. steam, to be cooled is supplied to and withdrawn from the tubes of each V frame either through a pair of suitably divided headers 36, 38 (see also Figs. 8 and 9, not shown) or through a single V-shaped header (79, Fig. 10, not shown). The heat exchange assemblies are supported on a grid-like structure of longitudinal and transverse beams (see Fig. 3) provided with a plurality of upstanding columns (44, Fig. 4) on which the frames are supported with the lower apices spaced above the longitudinal support beams. The assemblies may be arranged in a tower with an outer ring of the assemblies at a higher level above the ground and surrounding one or more central assemblies at a lower level. The frames or banks comprising each heat exchanger assembly may be of different lengths so as to substantially fill the plan area of the lower part of the tower in which the assemblies are located (see Fig. 5, not shown). The tubes 45 which may be inclined at a slight angle, e.g. 5 degrees, to the horizontal to facilitate draining of condensate, are supported at spaced apart locations by upper and lower transverse support members 41 and 40, the tubes at these locations being provided with collars 46 instead of fins. The lower support member 40 is in the form of an I beam which has an inclined portion 47 and a horizontal portion 48 extending beneath the tubes. The support members 40, 41 of adjacent banks of tubes are interconnected adjacent the apex of the frame by bolting together respective flange plates 49 and 50 through a common vertical plate 50. Blanking plates, e.g. 75, 76, 77, 78, are provided at the ends of the V-frames. In an alternative embodiment (Fig. 11, not shown), the flow of cooling air over the finned tubes is supplied by one or more fans (91, 92, 93) located below the V-frames (88, 89, 90).
Patent GB-1464720-A (GB)
IPC: B22D7/10
Filed: 1974-12-03
Abstract: 1464720 Moulding hot tops from a slurry RESIL PROCESSES Ltd 3 Dec 1974 [10 Dec 1973] 57028/73 Heading B5A [Also in Divisions C3 and B3] A method of producing hot tops from a composition comprising 70-90% by weight refractory aggregate 2-12% by weight fibrous organic material, 4-20% by weight of argillaceous material, 0À5-7% by weight resin binder and 0À5-7% by weight of a water-soluble sulphite lye binder comprises subdividing the fibrous material in an aqueous suspension and adding the remainder of the solids ingredients together with the resin to the mix to form a suspension or slurry of the composition, pouring the slurry into a die or mould defining the shape to be produced and applying controlled pressure to said slurry in said die or mould to express water from said slurry and to press the solids contents of the slurry to said shape, the pressing being controlled to produce at least some orientation of the fibres of the organic material within said shape by causing or allowing water to flow out of said die or mould through the interstices of the solids material of the composition during compaction, removing the pressed shape from the die or mould and drying or curing the shapes at an elevated temperature. The pressure may be applied by means of a pressure plate and the pressure increased as the water is expelled from the solids material so that a substantially higher pressure is applied after the majority of the water has been expressed from the solids material retained in the die or mould. The water is preferably caused or allowed to leave the die or mould in one direction only. Suitable final pressures are within the range 100-700 p.s.i. The water may be expressed from the slurry within the die or mould either in a direction coaxial with or substantially transverse to the direction of pressing. The refractory aggregate is preferably a grog obtained from silica sand, crushed fire brick or calcined fire clay. Two grades of refractory aggregate may be present in the composition, the first grade being present in a proportion of 50-65% by weight of the composition and having a particle size passing a 10 mesh (B.S.S.) sieve and the second grade comprising 20-30% by weight of the composition and graded such that all the material passes a 20 mesh (B.S.S.) sieve. The refractory aggregate may include a proportion of lightweight aggregate, suitably 30-90% by weight of the composition, e.g. expanded fireclay grog. The refractory aggregate may also include a proportion of "floaters" or an aluminosilicate material such as calcined bauxitic clay or a Scottish fire clay. The argillaceous material is preferably a low melting point ball clay or a refractory ball clay to which flux, such as Cornish stone, felspar or nepheline syenite may be added. The resin binder is preferably a phenol-formaldehyde novolak. The soluble sulphite lye is preferably that obtained from the digestion of wood with ammonium bisulphate.
Patent GB-1278638-A (GB)
Title: Electrical switch
Inventor: BUCH HANS-JOACHIM
IPC: H03K19/16
Filed: 1969-11-21
Abstract: 1278638 Controlled non linear reactors WALTHER-BUROMASCHINEN GmbH 21 Nov 1969 [23 Nov 1968] 57194/69 Heading H3B In an electrical switching circuit, Fig. 1, switching is controlled by saturation or desaturation of a torroidal core 4 of rectangular hysteresis loop material on which a coil 5 is wound, the core having a saturating permanent magnet 6 attached thereto, and a movable magnet 7 being provided to oppose the field of magnet 6. The output of a pulse generator 1 is rectified by diode 8, and the resulting voltage appearing across capacitor 9 controls the output of an amplifier 10. The coil 5 short circuits the generator output when the core 4 is saturated, but on moving the magnets close together a rapid desaturation occurs so that the coil impedance rises and a voltage appears across capacitor 9 to drive the amplifier 10. The pulses have a mark space ratio greater than unity, a value of fifteen being given as an example, and the capacitor 9 and the input resistance of amplifier 10 are chosen such that their time constant is approximately equal to the time between pulses. The generator output may be grounded by series or parallel combinations of similarly cored coils to form OR and AND gates, Figs. 4, 5 (not shown), and a combination of three cored coils with two output amplifiers is described, Fig. 6 (not shown), which is stated to be capable of giving a BCD (binary coded decimal) output.
Patent GB-1181674-A (GB)
Title: Diethylbenzene Oxidation Products
IPC: C07C29/80
Filed: 1966-12-23
Abstract: 1,181,674. Oxidation products of diethylbenzenes. COSDEN OIL & CHEMICAL CO. 23 Dec., 1966 [18 April, 1966], No. 57659/66. Heading C2C. [Also in Division C5] Oxidation products of diethylbenzenes are obtained by first distilling a diethylbenzene mixture comprising 20-80% m-diethylbenzene in a column having at least 100 distillation stages to give a bottoms fraction comprising o- and p-diethylbenzenes and less than 5% m-diethylbenzene, and an overhead fraction comprising at least 93% m-diethylbenzene, and then subjecting either fraction to one of the following oxidation procedures: (a) strong oxidation to give a dicarboxy benzene and/or an ethyl benzoic acid; (b) mild oxidation to give a diacetyl benzene; (c) very mild oxidation to give an ethyl-(1-hydroxyethyl) benzene and/or an ethyl acetophenone. In examples, (II) strong oxidation of the bottoms fraction using HNO 3  yields mainly terephthalic acid; (III) strong oxidation of the overhead fraction using HNO 3  yields isophthalic acid; (IV) mild oxidation of the bottoms fraction using O 2 /cobalt stearate at 125‹ C. for 8 hours yields p-diacetyl benzene, p-ethyl acetophenone, the corresponding carbinol, and the corresponding o-isomers; (V) very mild oxidation of the bottoms fraction using O 2 / cobalt stearate at 125‹ C. for only 65 minutes gives mainly the ethyl acetophenones and corresponding carbinols with some p-diacetyl benzene; (VI) similar very mild oxidation of the overhead fraction gives mainly m-ethylacetophenone and the corresponding carbinol with some m-diacetyl benzene; and (VII) mild oxidation (similar to IV) of the overhead fraction gives mainly m-diacetyl benzene and some m-ethylacetophenone.