baber/WOPTO huggingface dataset:
Patent GB-1580492-A (GB)
Title: Process for the manufacture of vanadium carbide containing material of low sulphur content
IPC: C22C35/00
Filed: 1977-06-27
Abstract: The materials containing vanadium and carbon are employed for the manufacture of certain steels. These materials are prepared by heating a mixture of vanadium oxide and carbon in vacuum. These substances also contain sulphur present as impurity in the starting carbon and impairing the qualities of the steels. Using the present process the sulphur content is reduced by adding silicon, silica or tin to the mixture.
Patent GB-158341-A (GB)
Title: Improvements in or relating to tooth brushes
IPC: A46B9/04
Filed: 1919-10-31
Abstract: 158,341. Speer, W. R., and Yeo, W. H. Oct. 31, 1919. Handles. - In a toothbrush for cleaning thebacks of teeth the handle a is provided with a hole or slot a<1> in which is secured by riveting or the like a flat bristle-carrying head b with a stem b<1>, the end of the handle or the edge of the head being bevelled so that the head is inclined at an obtuse angle to the plane of the handle. Where the head is formed with a cylindrical stem fitting into a socket means for adjustably securing the head may be provided comprising a transverse hole in the handle having a set screw adapted to be screwed up to engage the stem.
Patent GB-1224307-A (GB)
Title: Sewage treatment
IPC: C02F1/72
Filed: 1969-05-28
Abstract: 1,224,307. Sewage treatment. FMC CORP. 28 May, 1969 [6 June, 1968], No. 26852/69. Heading C1C. A sewage treatment process comprises maintaining an aqueous waste material containing solid and dissolved organic matter, e.g. sludge or mixed liquor, at a temperature within the range of 10‹ to 100‹ C., passing an oxygencontaining gas through the aqueous material, adding hydrogen peroxide during the passage of the gas, and settling solid organic matter from the hydrogen peroxide-treated aqueous waste material. The pH of mixed liquor may be adjusted to within the range of 2À3-3À5 by the addition of hydrochloric acid or sulphuric acid.
Patent GB-1469106-A (GB)
Title: Ic engines
IPC: F02B23/08
Filed: 1973-06-05
Abstract: 1469106 IC engines with auxiliary combustion chambers RICARDO & CO ENGS (1927) Ltd 4 June 1974 [5 June 1973] 26855/73 Heading F1B The invention relates to an I.C. engine of the spark ignition, fuel injection type comprising a cylinder head 12 in which is provided a primary ignition chamber 16 which communicates with the cylinder 10 through a transfer passage 17, the ignition chamber being so shaped that the charge of air entering thereinto during the compression stroke of the piston is caused to rotate in the chamber. The chamber is formed with a hemispherical upper portion 18, a flat bottom surface 19 and a frusto-conical lower portion 20 which extends between the flat bottom surface 19 and the hemispherical upper portion 18 and which is convergent towards the bottom surface. The frustoconical lower portion 20, the flat bottom surface 19 and the transfer passage 17 are formed in a plug member 21 which is located in the cylinder head 12; the transfer passage extends at an inclination to the flat bottom surface and communicates at its lower end with a shallow recess 15 formed in the piston crown. A tapped hole is formed in the cylinder head and a sparking plug 25 is mounted therein, the electrodes projecting into the ignition chamber adjacent the upper curved surface thereof. A fuel injection nozzle 28 also opens into the ignition chamber at a point of the hemispherical surface such that fuel is injected into the air charge entering the ignition chamber from the transfer passage 17 during the compression stroke, the fuel and air mixture then sweeping past the electrodes of the sparking plug. The combustion gases discharge from the ignition chamber through the transfer passage being directed into the recess 15 in the piston crown. An inlet valve 14 also an exhaust valve (not shown), are provided in the cylinder head 12, either air or a weak air/fuel mixture being supplied through the inlet opening.
Patent GB-327938-A (GB)
Title: Process of removing alkali chlorides from crude potassium carbonate solutions
IPC: C01D7/28
Filed: 1929-09-04
Abstract: 327,938. I. G. Farbenindustrie Akt.- Ges. Oct. 16, 1928, [Convention date]. Potassium carbonate is freed from alkali chloride, by passing ammonia into crude potassium carbonate liquor, preferably to saturation point. Two layers separate, most of the alkali chloride going into the upper one, the lower one giving practically pure potassium carbonate on evaporation.
Patent GB-283882-A (GB)
Title: Improvement in composite glass and ferroconcrete construction for walls, floors, roofing and the like
IPC: E04B5/46
Filed: 1927-10-11
Abstract: 283,882. Liese, P. Jan. 19, 1927, [Convention date]. Pavement lights. -The supporting grid of a glass and ferroconcrete structure for walls, floors, roofs &c., as described in Specification 247,918, is composed of crossed bars 9 which, at least as regards those extending in one direction, are provided with notches, bends, or recesses, &c., 10 to form seats for the crossing bars. The bends in the round bars 9 are separated by two or more times the width of the apertures of the grid so that a straight part of one bar rests in a bend of a crossing, bar.
Patent GB-599890-A (GB)
Title: Improvements in pliers and tongs for engineers, smiths, and like purposes
IPC: B25B7/02
Filed: 1945-10-16
Abstract: 599,890. Pliers. ROSS, J. E. Oct. 16, 1945, No. 27097. [Class 61 (ii)] A pair of pliers have crossed handles 13, C ; the jaw face on the handle B is formed as a channel H and the other jaw face as an abutment cam G, in order to grip tubular work horizontally. Recesses K, N; L, M are provided in the jaws to enable the pliers to grip tubular work vertically. Wire cutters are provided at F and a screwdriver at J. An expanding slot adjustment is provided at D Specification 414,066 is referred to.
Patent GB-699626-A (GB)
Title: Improvements in and relating to chairs or seats
Inventor: SCOTT ROY FRANK
IPC: A47B91/10
Filed: 1952-10-29
Abstract: 699,626. Seats. GAUMONT-KALEE SEATING, Ltd. Oct. 29, 1952. No. 27227/52. Class 52(ii) A theatre seat is provided with side standards 1 consisting of a base part 4 secured to the floor and having an upper arcuate concave bearing 9 for the correspondingly shaped lower end 10 of the upper part 5 of the side standard, the upper part, when adjusted to the slope of the floor, being fixed to the base part 4 by two or more clamping bolts 6 and nuts 7 projecting radially from the base part 4 and passing through a slot or slots in the upper part 5. The bolts 6 may be integral with the base part 4 or may be separate and pass through holes therein.
Patent GB-409713-A (GB)
Title: Improvements in and relating to electric converting apparatus
IPC: H02M7/00
Filed: 1932-10-01
Abstract: 409,713. Converting. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Willis, C. H. ; 184, Prospect Avenue, Princeton, New Jersey, U.S.A.) Oct. 1, 1932, No. 27310. Convention date, Oct. 1, 1931. (Class 38 (ii).] Apparatus for transmitting energy in either direction between a D.C. circuit 10 and a polyphase A.C. circuit 11 comprises a polyphase inductive network 12 and a plurality of electric valves 20 .... 31 interconnecting the circuits, and means for producing in, or introducing into, the network an alternating potential having a frequency which is a harmonic of that of the A.C. circuit, for effecting commutation of the current between the valves under any desired power factor conditions on the A.C. side. In the arrangement shown in Fig. 1, the network 12 comprises the six phase mesh connected windings 15, and two star-connected windings 16, 17 having independent neutrals. The grids of the valves are excited from the secondary windings 19 of a grid transformer, the primary winding 18 of which may be energized from any source of the desired frequency. If the A.C. circuit 11 is connected to an independent source for determining its frequency and wave form, the winding 18 may be energized from the circuit 11 through a phase-shifting transformer 18<a>. The voltages applied to the grids should preferably be of peaked wave form, as described in Specification 390,184. The harmonic frequency is supplied to the network by means of a frequency changer comprising a synchronous motor 33 driving a single-phase synchronous generator 34 connected between the neutrals of the windings 16, 17. The effect of the harmonic voltage in distorting the wave forms in the network 12, and rendering it possible to commutate the currents between the valves under conditions where commutation would otherwise be impossible, is explained with the aid of diagrams. In a modification, Fig. 2 (not shown), the harmonic voltage is introduced into an open delta tertiary winding inductively associated with the network. In another modification, Fig. 3 (not shown), the network is inductively associated with two starconnected tertiary windings, between the neutrals of which the harmonic voltage is introduced. In a further form, Fig. 4, the harmonic voltage is obtained by connecting a condenser 38 between the two neutral points of the star-connected windings 16, 17 of the network 12. Specification 409,682 also is referred to.
Patent GB-838616-A (GB)
Title: Improvements in the manufacture of trialkyl boranes
Inventor: ANDERSON ROBERT GRAIG
IPC: C07F5/02
Filed: 1957-08-30
Abstract: Normal trialkyl boranes wherein the alkyl groups contain from 1 to 3 carbon atoms are produced by heating in an inert moisture-free atmosphere a mixture comprising boric oxide or an anhydrous metal borate and one or more n-alkyl aluminium halides, wherein the alkyl groups contain 1 to 3 carbon atoms and the halide is a chloride or bromide when the alkyl groups are methyl groups and a chloride when the alkyl groups are ethyl or n-propyl groups, and condensing the vapour of the resulting trialkyl borane in an inert atmosphere.  An alkyl aluminium bromide in which the alkyl group is ethyl or n-propyl may be used if there is included in the reaction mixture a metal chloride capable of reacting with the bromide to form the alkyl aluminium chloride.  Suitable metal chlorides are aluminium chloride, organo aluminium chlorides, alkali and alkaline earth metal chlorides.  The alkyl aluminium halide may be used in the form of a complex with an alkali or alkaline earth metal halide which may be preformed or formed in situ.  Alternatively the alkyl aluminium halide may be formed in situ from the corresponding alkyl halide or halides and aluminium, preferably dispersed in an inert diluent e.g. crystalline silica. The process may take place at atmospheric or reduced pressure and at temperatures above 100 DEG  C.  A solvent may be used if desired. In the modification wherein methyl chloride is introduced into a mixture containing aluminium and boric oxide or a metal borate, the resulting trimethyl borane is separated from the methyl chloride by cooling the vapours to -70 DEG  C., adding an excess of triethylamine and distilling the resulting mixture above 0 DEG  C. but below the boiling point of triethylamine and condensing the trimethyl borane distilled therefrom.  Under these conditions the triethylmethylammonium chloride formed remains undecomposed but the complex of trimethyl borane and triethylamine decomposes, and the trimethyl boraine is condensed by cooling the vapour below -22 DEG C. in an inert atmosphere.
Patent GB-1515788-A (GB)
Title: Method for manufacturing of anionic polycaprolactam with a low content of monomer and highly stable viscosity of the molten polymer
IPC: C08G69/20
Filed: 1976-07-01
Abstract: 1515788 Anionic nylon 6 CESKOSLOVENSKA AKADEMIE VED 1 July 1976 [8 July 1975] 27397/76 Heading C3R Nylon 6 of low monomer content and stable degree of polymerization is obtained by anionic polymerization using a basic initiator and an activator R<2>=H or C1-4 alkyl) in a molar ratio of activator : initiator of 0À866 to 1À4, with partial polymerization at below 220‹ C., shaping of the partial polymer, and completion of polymerization after shaping also at below 220‹ C.
Patent GB-691214-A (GB)
Title: Improvements in or relating to optical projection systems
Inventor: MOLYNEUX-FFENNELL HAROLD SEFTO
IPC: G03B21/00
Filed: 1950-11-09
Abstract: 691,214. Optical apparatus. COUNTY COMMERCIAL CARS (SALES), Ltd. Nov. 7, 1951 [Nov. 9, 1950], No. 24724/50. Class 97 (i). [Also in Group XXI] The invention relates to apparatus wherein an optical projector forms an image of, for example, a kinematographic film on a screen by reflection from a mirror orientable about at least one axis. In such a system the mirror 5 intercepts only the part of the light beam emanating from a particular part of the film or the remainder falling an annular reflector 6 which spreads it over a large screen area. The apparatus is intended to produce a light background to the picture projected on to a part-spherical screen in gunnery instructional apparatus. As shown, the inner edge of the annular reflector 6 is tangential to a plane parallel to the mirror 5 which is recessed. The combined reflector is carried on a parallel motion linkage on a headstock 19. The linkage is actuated by a cord 21 to pivot the reflector about a horizontal axis passing through the mirror 5. Rotation about a vertical axis is produced by rotation of the headstock 19 on the pedestal 23. The cord 21 passes over a pulley 22 on the headstock and pulleys 24, 25, 26 on the pedestal, its end being secured to the end of a lever 27 pivoted at 28. A cord 31 is anchored to a return spring 32 at one end, passes round the cylindrical part 34 of the headstock and is secured at the other end to the lever 35. Changes in aspect of the projected target image are produced by variations in the film itself. Changes in target position are produced by movements of the mirror derived from movements of the lower ends of the levers 27, 35 determined by.cams 38, 39 driven through sprockets and chain 44 from the proprojector. The cams are detachable by a wing-nut 42. To increase the amount of light falling on the annular reflector 6 the kinematograph projector used in conjunction with the illustrated apparatus may be provided, around its objective, with a ring of lamps or an annular lamp and baffles which confine the light therefrom so that it falls only on the annular reflector.
Patent GB-173312-A (GB)
Title: Portable display or holder for fertilizer and other samples
IPC: G09F5/04
Filed: 1920-09-27
Abstract: 173,312. Schrank, C. Sept. 27, 1920. Cards for displaying; pattern books.-A portable display device or holder for fertilizer or grain or other samples, comprises a pocket book, booklet, or leaflet 1 having recesses 10, 11 in one of the leaves for the reception of the samples. The recesses are formed by building the leaf of two parts between which is secured a layer of cardboard &c. furnished with pockets having a transparent covering of isinglass, celluloid, &c., openings being formed in one of said parts opposite the pockets. Printed matter, such as an analysis of a sample, may appear on the booklet.
Patent GB-861111-A (GB)
Title: Gas liquefaction apparatus
IPC: F25J1/00
Filed: 1959-08-11
Abstract: 861111 Gas liquefaction apparatus HUGHES AIRCRAFT CO 11 Aug 1959 [1 Dec 1958] 27472/59 Headings F4H and HG13 Compressed gas, e.g. nitrogen is liquefied by passing it through a coiled metal tube 12 where it is cooled by expanded gas issuing from a metal throttling coil 10 of less diameter than the coil 12 until liquefaction occurs. The coil 12 is formed round a mandrel 14 and has radial fins 16 held in position by a plastics thread 18, the whole being mounted within the liquid-collecting reentrant portion 4 of a Dewar flask 2. The liquid nitrogen serves to maintain cold an infra red sensitive lead selenide plate 5 (see Group XL(b)), secured to the underside of the chamber 4 and connected by leads 7, 9 to terminals 11, 13.
Patent GB-646331-A (GB)
Title: Self-quench superregenerative receiver
IPC: H03D11/02
Filed: 1948-10-20
Abstract: 646,331. Super - regenerative circuits. HAZELTINE CORPORATION. Oct. 22, 1948, No. 27537. Convention date, Nov. 28, 1947. [Classes 40 (v) and 40 (vi)] In a self-quenched super-regenerative receiver operating in the saturation mode the gain of the super-regenerative valve is varied in response to changes in the control electrode current flowing during.the saturation period, in order to maintain the average quench frequency constant. Changes in tuning, signal level, H.T. supply &c. tend to vary the oscillation build up period and thus the quench frequency but the resulting increase in number of grid current pulses produces a greater bias voltage in a grid leak and condenser circuit and so reduces the gain of the valve and therefore the oscillation build up period. The cathodefeedback oscillator 10 can be quenched either by the R.C. network 28, 29 in the grid circuit, or by the R.C. network 21 in the cathode circuit or the R.C. network 22, 25 in the anode circuit. When not required the first two of these networks are shorted by the switches 51 and 20, the anode resistor when not required being used to adjust the anode voltage and the anode capacitor being adjusted to act a byepass capacitor. An R.C. network 32, 38 in the grid circuit having a time constant preferably longer than the quench repetition period integrates the grid current pulses during the saturation period to provide the quench frequency controlling bias. An increased or decreased control may be obtained by moving switch 31 to increase or decrease respectively the positive grid bias from source +B. The audio frequency output may be taken from the anode or control grid by setting switches 41 and 51 to the appropriate positions. Specification 654,887 is referred to.
Patent GB-671662-A (GB)
Title: Method of and means for the production of filter tip cigarettes
IPC: A24C5/52
Filed: 1948-10-22
Abstract: 671,662. Cigarette-making machines. INDUSTRIAL MACHINERY CO., Ltd. Aug. 12, 1949 [Oct. 22, 1948], No. 27553/48. Addition to 615,435. Class 130. In the arrangement for inserting filter plugs in a tobacco rope as described in the parent Specification, in which the rope is severed by reciprocating knives 3 which rotate in a wheel 4, at a higher speed than the rope and push the severed portions on to a wheel 19, where they are joined by plugs pushed along by retractable pins 20, 20o, the peripheral speed of the wheel 4 is greater than the peripheral speed of the wheel 19 which is substantially equal to the linear speed of the paper web 39. Contact with the plugs is maintained by additional retractable pins A as described in Specification 615,502. Positive abutment of each tobacco length takes place in the arcuate chute 37, the forward end of the tobacco being pressed up to the preceding plug, and the tobacco being compressed between knife 3 and the pins 20a springs back when the knife is withdrawn and contacts the oncoming plug.
Patent GB-1240339-A (GB)
Title: 4,6-DICHLORO-delta<4,6>-STEROIDS OF THE PREGNANE AND ANDROSTANE SERIES
IPC: A61K31/568
Filed: 1968-06-10
Abstract: 1,240,339. 4,6 - Dichloro - #<SP>4,6</SP> - steroids. SCHERING A.G. 10 June, 1968 [9 June, 1967], No. 27559/68. Heading C2U.  Novel 3 - oxo - 4,6 - dichloro - #<SP>4</SP>'<SP>6</SP> - steroids are prepared by treating the corresponding 3 - oxo - 4 - unsubstituted - 6 - chloro- or 6- unsubstituted - 4 - chloro - #<SP>4</SP>'<SP>6</SP>  -  steroids with an agent capable of liberating positively and negatively charged chlorine and then treating the product with a base. A #<SP>1</SP>-double bond may be introduced into the products by a known method. The novel steroids are stated to be strong gestagens, and they may be made up into pharmaceutical compositions with suitable carriers. Reference has been directed by the Comptroller to Specification 1,131,443.
Patent GB-753430-A (GB)
Title: Improvements in or relating to plain bearings
IPC: F16C33/12
Filed: 1954-09-23
Abstract: 753,430. Plain bearings. SIEMENSSCHUCKERTWERKE AKT.-GES. Sept. 23, 1954 [Sept. 23, 1953], No. 27587/54. Class 12 (1). In a plain bearing assembly, a shaft journal 3 has a covering of metal 4 which is softer than the bearing surface of the bearing 1, the bearing surface being made of grey cast iron. The covering is preferably bronze and the journal unhardened. The journal surface is suitably roughened before the application of the bronze covering by means of a spray gun. An oil thrower ring 5 is secured to the shaft 2 and runs in a recess 6 in the bearing body 1. Trapped oil is returned through a channel 7 to the oil supply channel 8.
Patent GB-251872-A (GB)
Title: Improvements in collapsible baby-carriages
IPC: B62B7/06
Filed: 1925-11-03
Abstract: 251,872. Oyston, W. R. Nov. 3, 1925. Shafts.-Collapsable baby carriages are pro. vided with a handle member consisting of two telescoping rods or tubes 10, 11 for traction and for folding or extending the carriage. The part 11 is adapted to be locked in the part 10, when extended, by means of a spring 15, Fig. 7, and the part 10 is locked in the carriage frame by means of the spring 18, Fig. 5, engaging an aperture 21.
Patent GB-915199-A (GB)
Title: Improvements in apparatus for spraying irregularly shaped articles
Inventor: AYLEN JOHN FREDERICK
IPC: B05B13/04
Filed: 1959-08-13
Abstract: In apparatus for spraying irregularly shaped articles, of the kind employing a spraying head mounted on a carrier which is reciprocated transversely of an article conveyed beneath it, the spraying head is shifted into and out of operative position relative to lower level surfaces of the article solely by angular movement of an arm pivoted to the carrier, upon which arm the head is mounted.  As shown, the apparatus comprises a bridge structure 1 (Fig. 1) beneath which pass the articles to be sprayed.  A carrier 3 is reciprocated along the bridge by a motor-driven sprocket chain 4, and sup <PICT:0915199/III/1> <PICT:0915199/III/2> ports a plate 5 which is moved up and down as determined by contour rails 6.  The plate 5 carries a pivot for a higher level spray head (not shown) and a double-acting pneumatic motor having cylinders 8 and 9 operating a rack 11 (Fig. 2) which engages a gear 12 and can thus cause an arm 16, 17, secured to the gear 12, to pivot.  The arm 16, 17 carries an adjustable clamp plate 18 mounting an extension 19 having at its lower end a bearing for a pivot pin 20 which carries a lower level spray gun, not shown. The pin 20 is keyed to a lever 21, connected by a rod 22 to one end of a freely pivoted lever 23, the other end of which is connected by a rod 24 to a lever 25 fixed to the pivot pin of the higher level spray head, and by a rod 26 to rollers (not shown) engaging the contour rails 6.  A pneumatically operated valve 34 controls admission of air to the cylinder 9 to cause the arm 16, 17 and extension 19 to pivot downwardly into operative position, or to cylinder 8 to effect the reverse movement, as well as the supply of air to the lower or higher level spray guns.  The valve 34 may be controlled by means, e.g. photo-electric devices, so that the arm 16, 17 is lowered automatically when a low level portion of the article is to be sprayed, and so that spraying air is only supplied when an article is present.  Specification 787,019 is referred to.