baber/WOPTO huggingface dataset:
Patent GB-1514711-A (GB)
Title: Vapour generating and superheating units and methods of operating fluidised bed combustion apparatus for same
IPC: F23C10/00
Filed: 1975-08-11
Abstract: 1514711 Fluidized bed vapour generators BABCOCK & WILCOX Ltd 11 Aug 1975 [9 May 1974] 20459/74 Heading F4A A fluidized bed vapour generator comprises a grate 32 supporting a bed 18 of fluidized particles and allowing a flow of fluidizing air, and a combustion chamber 4 lined with evaporating tubes and leading to a gas outlet pass containing superheating and economizer tube blanks 26, 28; solid fuel particles to be burnt in the bed being introduced (e.g. through nozzles 36) to a combustion chamber region immediately above the bed 8. Secondary combustion air is admitted at 30 at a region of constriction in the chamber 4. Tubes 16 are bent out of one wall to extend into the bed 18. As an alternative to nozzles 36 the fuel for the bed (e.g. coal and return ash particles) can be discharged through apertures in wall 12. In a lower operating range the bed is arranged so that combustion is substantially completed in the bed. In a higher operating range the fluidizing air flow is held constant (at around 4 feet per second) and the fuel supply is increased.
Patent GB-404884-A (GB)
Title: Improvements in valve receiving sets for wirless signalling and the like
IPC: H03J1/04
Filed: 1933-07-21
Abstract: 404,884. Wireless receiving-apparatus. IDEAL WERKE AKT.-GES. FUR DRAHTLOSE TELEPHONIE, 97, Groose Leegestrasse, Hohensch÷nhausen, Berlin. July 21, 1933, No. 20584. Convention date, Aug. 18, 1932. [Class 40 (v).] The elongated stationary tuning- scale 7 is exposed through an opening in a sloping wall 5 of the chassis 1, and is situated at a lower level than the plate 2 carrying the valve sockets. The chassis is housed in a cabinet, with the loud-speaker arranged above the chassis.
Patent GB-709749-A (GB)
Title: Improvement in metal-casting art
IPC: B22C9/02
Filed: 1951-08-31
Abstract: A bronze used for the casting of slippers for roll couplings, (see Group XXII), which is stated to have a tensile strength of 110,000 p./s.i. minimum and an elongation of 12 per cent. minimum, has a composition of copper 60-68; tin 0.2 max.; lead 0.2 max.; nickel 0.5 max.; iron 2.0-4.0; aluminium 3.0-7.5; manganese 2.5-5.0 and the balance zinc, all as percentages.  A bronze whose crystalline structure is readily controlled by the rate of cooling after casting has the composition copper 87.0-88.5; tin 9.75-10.75; nickel 1.25-1.75; lead 0.25 max. and phosphorus 0.25 max., all as percentages.ALSO:A mould for casting metal is made by providing a pattern for the article to be cast, forming a mould chill to a configuration corresponding to said pattern, juxtaposing the chill and the pattern with a clearance between them and filling the space with a plaster slurry, this plaster setting to form a mould lining. The plaster may comprise 5 per cent. of fibrous talc and be mixed with 100 parts of water to 70 of plaster.  After the slurry has set overnight, the mould parts are separated from the pattern and dried at 390 DEG F. while closed or covered with asbestos &c. and then heated for an hour uncovered to reduce the combined water to half molecule to each molecule of calcium sulphate.  To control chilling or vary the rate of cooling at desired points in the cast metal, the plaster layer may be varied in thickness.
Patent GB-614146-A (GB)
Title: Cup washers
IPC: F16J15/16
Filed: 1946-07-10
Abstract: 614,146. Piston packing. HYDRAULIC BRAKE CO. July 10, 1946, No. 20606. Convention date, Aug. 27, 1945. [Class 122 (i)] A rubber cup-washer 7, as used in hydraulic brake systems, has a circumferential groove in which a metallic split ring 14 is located. The gap between the ends of the ring 14 is covered by an angle member 15. The ring 14 has a normal diameter less than that of the cylinder 8 and is adapted to expand against the cylinder wall under the action of the fluid pressure. Ducts 19, communicating with a groove 17, are provided in the washer 7 for aiding the flow of brake fluid past the washer, when the piston 9 and washer 7 are moved in the non-compressive direction by the spring 10.
Patent GB-742683-A (GB)
Title: Heater for fuel oil or other viscous liquids carried in ships
IPC: B63J2/14
Filed: 1953-07-24
Abstract: 742,683. Heating viscous fluids. CASINGHINI, F., [trading as CASINGHINI ECONO. MIZZATORI GREEN, F.]. July 24, 1953 [Jan. 27, 1953], No. 20619/53. Class 64(3). An arrangement for heating viscous liquid carried in bulk in a ship comprises a container for the viscous liquid and a plurality of tubular heating elements immersed in said liquid the individual elements comprising steel tubes M, Fig. 4, provided with externally-finned cast iron jackets N which preferably are shrunk on to the tubes. Fig. 2 shows a network comprising horizontal transversely-finned heating tubes C and vertical longitudinally-finned tubes V, these latter tubes carrying inlet and outlet manifolds B, F respectively for the admission of hoating steam and discharge of condensate from the network. The heating tubes are made in convenient lengths which are joined together by bends E, which may also be finned, and by coupling sleeves D.
Patent GB-280999-A (GB)
Title: Improvements relating to aerials for wireless signalling
IPC: H01Q1/32
Filed: 1926-08-21
Abstract: 280,999. Hartridge, K. E. Aug. 21, 1926. Aerials for armoured cars. The loading inductance is placed outside the armoured structure, instead of inside as usual. Preferably it is located just above the roof of the car near the insulation from which the lead-in wire passes to the set. The inductance may be housed in a weatherproof casing, or in a shroud or casing of copper or other non-ferrous metal. A few turns of the total loading-inductance necessary may be located inside the car for convenience in tuning.
Patent GB-715467-A (GB)
Title: Improvements in or relating to lathe drivers
IPC: B23B33/00
Filed: 1950-08-21
Abstract: 715,467. Lathe drivers. BAKER & BESSEMER, Ltd., J., and BARKER, A. Oct. 19, 1951 [Aug. 21, 1950; Aug. 7, 1951], Nos. 20696/50 and 18632/51. Class 83 (3). In a lathe driver in which resistance to the rotation of the work tends to increase the grip, a first annular member 1 is secured concentrically to a face-plate 3 and a second annular member 6 co-operates therewith so that rotary movement of the latter relative to the former member causes axial movement of the latter and thereby increases the grip of jaws 7. In a first embodiment, Fig. 1, the member 1 is bolted to the face-plate 3 and has buttress threads 5. The member 6 with gripping pads 7 is threaded (left-hand) to fit over the first member and relative rotation of the members due to slipping of the work 8 during cutting causes a tightening of the pads 7 against the work. In a second embodiment the threads are replaced by rollers 13, Fig. 2, freely rotatable about vertical pegs 9 secured to the first member, which engages a ring 16 provided with cam faces which tend to tighten pads 7 against the face of the work 8.
Patent GB-779037-A (GB)
Title: Rotary thread control for multi-needle chain stitch sewing machines
IPC: D05B51/00
Filed: 1955-07-18
Abstract: 779,037. Sewing machines. INDUSTRIEWERKE KARLSRUHE, AKT.-GES. July 18, 1955 [July 17, 1954], No. 20710/55. Class 112 The needle-thread take-up in a multineedle chain-stitch machine comprises a plurality of rotary cams 13, 14, 15 over which the threads A, B, C, pass on their way from the tensioning devices 9, 10, 11 to the needles. The cams are arranged adjacent one another on a common shaft and are circumferentially offset with respect to one another in conformity with the distances between the tips of the needles. The cams may be united in a single body which rotates in a direction counter to the thread movement. Thread guides 18, 19 are arranged at each side of the cams, each thread eye being individually adjustable.
Patent GB-679325-A (GB)
Title: Process for preparing polyfunctional polyphenyl compounds
IPC: C07C255/51
Filed: 1950-08-22
Abstract: As intermediates for alkyd resins may be employed stilbene- and bibenzyl-dicarboxylic acids and tetra-(carboxyphenyl)-thiophenes.ALSO:The invention comprises tetra - (carboxyphenyl)-thiophenes, and the manufacture of these compounds, of tetraphenylthiophenes containing other functional substituents instead of the carboxyl groups, and of stilbenes and bibenzyls similarly substituted in each benzene ring, by heating a functional group substituted toluene with sulphur (or a substance yielding it) to an elevated temperature (e.g. with about 5-50 moles. per cent of sulphur at about 450-550 DEG  F. for about 0.5-12 hours), if desired in the presence of an inert diluent.  The reaction product may be a mixture of the various types of compound obtainable, but the formation of bibenzyl derivatives is encouraged by working under a pressure of hydrogen sulphide.  In examples: (1) p-tolunitrile is autoclaved with flowers of sulphur to produce p : p1-dicyanostilbene; (2) p-toluic acid is heated with flowers of sulphur, the hydrogen sulphide evolved being continuously flushed out with nitrogen, the solid product is extracted with hot aqueous caustic potash, the potassium salt of stilbene-p : p1-dicarboxylic acid crystallizes on cooling, further amounts being obtained after concentration, and finally the solution is poured into hot dilute sulphuric acid to precipitate tetra-(p-carboxyphenyl)-thiophene.  Instead of p-toluic acid there may be employed mixtures of isomeric toluic acids, e.g. a mixture of substantially equal quantities of the m- and p-compounds. Other functional substituents which may be present in the starting materials and products are carboxylic salt (e.g. sodium, potassium, calcium, magnesium, copper or lead salt) groups, carboxylic methyl, phenyl or substituted phenyl ester groups, -COCl, -CCl3, -CBr3, -CF3 and -C2Cl5.  Other sources of sulphur are hydrogen sulphide in conjunction with dehydrogenation catalysts, sulphur dioxide and carbon disulphide.ALSO:As mineral oil additives may be employed tetra-(carboxyphenyl)-thiophenes.
Patent GB-728425-A (GB)
Title: Improvements in and relating to automatic speed control systems
IPC: H02P7/34
Filed: 1953-07-27
Abstract: 728,425. Automatic speed control systems; induction generators; phase-sensitive circuits. GENERAL ELECTRIC CO. July 27, 1953 [July 29, 1952], No. 20780/53. Classes 35 and 38 (4). [Also in Group XXXIX] General.-In an automatic speed control system for an electric motor, the error signal is derived from an induction type tachometer alternator providing an output of constant frequency but varying magnitude, which is compared with a reference A.C. voltage. It is stated that the control may be supplied directly to the motor field, but as shown the control is effected through an amplidyne exciter to a Ward- Leonard set. In Fig. 2, a coarse speed control is provided by comparing the motor voltage with a D.C. reference voltage, and the error signal from the tachometer circuit produces a further control which acts by varying the D.C. reference voltage. Tachometer alternator.- Fig. 3 comprises two stator cores 13a, 13b and a rotatable conducting disc 14 between them. The primary windings 24, 26 are mounted on one stator and the secondary coils 23, 25 are mounted on the other stator, in space-quadrature with the primary coils. The output voltage for a given electrical load is proportional to speed as indicated in Fig. 5 (not shown), and changes in phase-sense with the direction of rotation. The " primary " and " secondary " coils of the alternator may be connected in diagonally opposite arms of a bridge circuit, Fig. 4 (not shown), to reduce the effects of leakage flux and temperature variations. Speed control circuit: single control, Fig. 1.- The error signal is the difference between the output of a tachometer alternator 10, driven by a Ward-Leonard set 1, 2, and a reference voltage from a potentiometer 9 energized from the same A.C. supply as the tachometer. The error signal is fed through a push-pull amplifier 11a to a push-pull phase-sense discriminator 11b, comprising a pair of double triodes 45, 46 having their anodes A.C. energized from the same source as the tachometer: the push-pull triodes for each phase-sense are in separate envelopes 45, 46. The outputs from the discriminator anode-cathode circuits are fed through a push-pull power amplifier 11c to differentially energize the fields 56, 57 of an amplidyne exciter 12 for the Ward-Leonard generator. Coarse and fine control. Fig. 2.-The motor B.E.M.F. across potentiometer 64 is compared with a D.C. reference voltage across resistor 70 to differentially control the amplidyne exciter fields 56, 57 through a magnetic amplifier 65. The D.C. reference voltage is derived from a saturable reactor unit 63 (see Group XXXIX) which is controlled by a discriminator/amplifier unit 83 to vary the D.C. reference in accordance with the A.C. speed error signal (i.e. the difference between the output of tachometer alternator 10 and the A.C. reference voltage across potentiometer 71.
Patent GB-265474-A (GB)
Title: Improvements in and relating to centering or falsework for use in the laying of concrete floors
IPC: E04G11/46
Filed: 1926-08-23
Abstract: 265,474. Brader, G. B. Aug. 23, 1926. Centring for floors. - Centring for moulding concrete floors comprises arched metal shutters 5 supported in troughs 4 carried by longitudinallyextending timber runners 3, and such troughs are adapted to receive metal displacers 6 of any desired depth according to the depth of ribs required. The metal shutters and displacers are alternately of different sizes so that their adjacent ends telescope one within the other. The runners 3 are supported by cross-timbers 1 resting on props 2. Longitudinal reinforcing rods 10 are arranged in the ribs so as to rest on pre-cast concrete spacers 9, which are arranged at intervals on the displacers. Hangers 11 for supporting ceiling- runners are attached to the spacers 9 or reinforcing-rods 10. The ends of the arches of the floor are sealed by slabs.
Patent GB-623748-A (GB)
Title: Improvements in high frequency cables
IPC: H01B11/18
Filed: 1946-07-11
Abstract: 623,748. Electric cables. TELEGRAPH CONSTRUCTION & MAINTENANCE CO., Ltd., DEAN, J. N., and SMITH, E. W. July 11, 1946, No. 20801. [Class 36] A high-frequency co-axial cable comprises a non-conducting core 1, around which is applied an inner conductive layer consisting of a plurality of metal tapes. 5 applied edge-toedge with a long lay, together with an outer conductive layer consisting of a single metal tape 7 applied longitudinally over and folded around the tapes 5 and held in position by dielectric material applied thereon, e.g. by a stout helical thread 3. The helical thread 3 may serve to support an outer dielectric envelope 4 and an outer conductor (not shown). The tape 7 may be transversely crimped as at 8 to prevent buckling. An inner conductor 9 may be included if desired. The outer conductor may be applied over the dielectric envelope 4 in the form of tape or tapes having a long lay and may be held in position by a pair of superimposed helically-applied metallic binder tapes, the turns of each helix breaking joint and those of the upper helix covering the gaps between the turns of the lower helix. The core may be of polythene or jute, and the main insulation and binder may be of polythene or any flexible, water-resistant thermoplastic insulation such as orientated polystyrene, which may be mixed with polyisobutylene or mixtures of polythene with polyisobutylene. The helical binder may be of insulation having a higher softening point than that used for the dielectric envelope. A multi-start helix may be used for the binder.
Patent GB-881094-A (GB)
Title: An electron-optical apparatus
IPC: H01J37/09
Filed: 1959-06-17
Abstract: 881,094. Electron-optical apparatus. TESLA, NARODNI PODNIK. June 17, 1959 [June 19, 1958], No. 20810/59. Class 39(1) The electron beam e.g. in an electron microscope is altered in cross-section by means of a diaphragm having a lenticular opening and being rotatable about an axis perpendicular to the axis of the beam. The lenticular opening is formed by the partial coincidence of a bore 13, Fig. 5, in a rod 10 with two apertures 15 in a sleeve 14 fitting over the rod, the effect of rotation of the rod, together with the sleeve, relative to the beam being shown in Figs. 3 and 4. The rod 10 is mounted in sealing-rings in the side wall 21 of the apparatus and may be rotated, moved longitudinally or pivoted about the ring 16 by externally located control knobs 24, 25.
Patent GB-939484-A (GB)
Title: Thermoplastic composition
IPC: C08L25/12
Filed: 1962-05-31
Abstract: A thermoplastic blend comprises (a) a major proportion of a resinous copolymer of 50-60% styrene, 20 to 30% acrylonitrile and 15 to 25% methacrylic acid with (b) a minor proportion of a rubbery copolymer of 60 to 70% butadiene, 20 to 30% acrylonitrile and 3 to 10% methacrylic acid.
Patent GB-1097181-A (GB)
Title: Improvements in circular looms
Inventor: DYNNIK SERGY ALEXANDROVICH
IPC: D03D37/00
Filed: 1963-05-27
Abstract: 1,097,181. Circular shuttleless looms. TSENTRALNY NAUCHNO-ISSLEDOVATELSKY INSTITUTE PROMYSHLENNOSTY LUBYANYH VOLOKON TSNILV. Aug. 27, 1964 [May 27, 1963], No. 21002/63. Heading D1E. A dummy shuttle circular loom weaves two separate fabrics with single picks of weft and tucked-in selvedges. Weft extends from a bobbin (14) through a clamp 10 and a guide 8 to the ingoing selvedge. A spring loaded catch 22 raises a gripper (18) in the nose of an ingoing dummy shuttle (7) so that as it enters the shed, it takes in a loop of weft that then extends on the inside and outside of the shuttle (Fig. 4b, not shown). When the shuttle is partly in the shed a knife 11 operates to cut the inner thread in the fabric width and a projection 53 on the shuttle tucks-in the weft end. The clamp 10 then closes so that the weft is drawn through the gripper (18) and extends on the outside of the shuttle only and a projection 54 on the shuttle beats-up the previously laid pick. The guide 8 is then moved inwardly so that the weft is looped around a projection 56 on the inner part of the shuttle and is laid as a single pick until the shuttle leaves the shed and the shed changes. After the shed has changed a hook 12 enters the warp sheet and on withdrawing, tucks-in the outgoing selvedge weft end.
Patent GB-354520-A (GB)
Title: Improvements in the manufacture of hydrogen peroxide
IPC: C01B15/03
Filed: 1930-07-12
Abstract: <PICT:0354520/III/1> Hydrogen peroxide is prepared from solutions of persulphuric acid or its salts, by atomizing with superheated steam in a vessel connected to a vacuum and heated, e.g. internally, or externally by steam, the vapours being condensed after separation of the liquid residue.  The solution may be preheated, say to 50-90 DEG C., before distillation.  An electrolytically prepared solution containing 20 per cent of ammonium persulphate and, in addition to ammonium sulphate, about 10 per cent of sulphuric acid, enters at g under a vacuum of say 40 mm., and is atomized at the nozzle a by steam at 5 atmospheres and a temperature of 220 DEG  C. entering at f. The mixture passes through a distillation tube c of resistant material, surrounded by a steam jacket b.  The gaseous and liquid constituents separate in the receiver d of ceramic material, the former passing through the pipe k to the condensers kept under vacuum, and the latter flowing through a pipe l.
Patent GB-1358843-A (GB)
Title: Casting tables
IPC: B28B1/087
Filed: 1971-07-30
Abstract: 1358843 Concrete casting table PARTING- TON CONSTRUCTION GROUP Ltd 30 July 1971 [2 May 1970] 21191/70 Heading B5A Concrete is cast on to a smooth, tensioned sheet 15 that covers the top of a casting table. The sheet 15 comprises glass fibre reinforced resin material or stainless steel, tensioned by weights (18) (Fig. 1, not reproduced) hung from wires (17) attached to opposing ends of the sheet. The sheet 15 (Fig. 2) is tensioned over steel plates 14 forming the table top, and supported by transversely extending I-shaped girders 13, and longitudinally extending girders 10 mounted by rubber mountings 11 on concrete beams 12. The casting area is defined by neoprene seals 26 laterally movable by positioning elements 27 supported on the girders 13. Mounting pins 32 are screw threaded to bias the seals 26 on to the sheet 15. A vibrator 20 comprising an eccentrically mounted rotor rotatable at 3000 r.p.m. is slidable along a beam 19 by a pulley system (see Fig. 1). Steam supplied by pipes 33, 34 is trapped around the table by a floor 35 and a removable cover 36 comprising polythenecovered expanded polystyrene material 37 and polythene sheets 38. Reinforcements 41 for the concrete wall or ceiling panels to be cast are suspended from the cover 36 or a framework. Three panels are cast per table.
Patent GB-765196-A (GB)
Title: Improvements in apparatus for making bolts
Inventor: FRAY VICTOR HILL
IPC: B21K1/44
Filed: 1953-07-31
Abstract: 765,196. Forging bolts. GUEST, KEEN & NETTLEFOLDS (MIDLANDS), Ltd., and ACTON BOLT, Ltd. Aug. 3, 1954 [July 31, 1953], No. 21232/53. Class 83 (4). A side - forging die assembly 19 for mounting on the reciprocating punch slide 16 of a boltheading machine, comprises a plurality of dies 20, Fig. 2, corresponding in number to the number of sides on the bolt head, said dies being arranged in sets, which sets are closed successively on to the periphery of the bolt head in response to the forward movement of the punch slide. Six dies 20, for forming hexagon heads, are mounted in collet formation in a punch holder 19. The dies are biased into their open position by springs and have projections 26 which co-operate with two sets of axially spaced cam surfaces 31 on the stationary die 15, whereby three alternate dies 20 are first closed by the outer cam surfaces 31 and the other three dies are then closed by the inner cam surfaces after the first set of dies have been opened. The cam surfaces 31 may be in the form of rollers. The heading machine, Fig. 1, has a cut-off station 12 where a blank is severed from a stock length and then. transferred to a first heading station 13 where a conical head is formed. The blank is then transferred by transfer fingers, to a second station 14 where it is formed into a preliminary hexagonal shape and it is then moved into alignment with the die 15 and pushed therein by shoulders 25 on the dies 20. A retractable plunger may be provided instead of the shoulders 25 to push the blank into the die 15. The blank is removed from the die 15 by an ejector which pushes the blank through the bore of punch holder 19 where it falls into a shoot leading to a pointing and thread-rolling station.
Patent GB-276502-A (GB)
Title: Improvements in wind proof lamps
IPC: F21V37/02
Filed: 1926-08-31
Abstract: 276,502. Watkins, D. J. G. Aug. 31, 1926. Portage lamps; Lantern cowls.-A wind-proof long-burning lamp comprises an outer cylinder 1 of glass, or with glass or other transparent windows, closed at the base and having concentric therewith at its upper part a plurality of openbased inner cylinders 4, 5 of proportionally decreasing diameters and lengths extending to differing depths into the outer cylinder, providing separate annular air inlet and outlet passages 6, 7. As shown, the outer cylinder 1 is closed at the base by an oil vessel 2 with a burner 3 and has at the top a horizontal flange 1<a>. The inner cylinders 4, 5 have flanges 4<a>, 5a supported adjustably by screws 8 from the flange 1<a>, and the top of the innermost cylinder 5 is closed. The peripheral openings 9, 10 are contracted by depending rims 4b, 5b so that the circumferential area of each opening is equal to the area of the vertical annular passage with which it communicates. To ensure a steady flame a small glass chimney 11 is provided. The flanges 4a, 5a may be inclined downwardly or the intermediate flange 4a may be formed of two plates diverging outwards to form the contracted anular openings 9, 10. In further modifications the intermediate flange 4a has a rim which projects both upwardly and downwardly, and the area of the openings 9, 10 may be contracted by gauze or perforated material of calculated mesh.