baber/WOPTO huggingface dataset:
Patent GB-833983-A (GB)
Title: Improvements relating to vacuum operated windscreen wiper motors
Inventor: BODDY JOHN
IPC: B60S1/10
Filed: 1955-02-04
Abstract: 833,983. Oscillating-vane motors; vacuum engines. TRICO-FOLBERTH Ltd. May 4, 1956 [Feb. 4, 1955], No. 3429/55. Classes 110 (2) and 122 (3). [Also in Groups XXIII and XXIX] A vacuum-operated windscreen wiper motor 2, Fig. 1, of the piston or vane type, has a control valve (in a block 8 on the motor) comprising two sliding members 38, 44 having one common surface of sliding contact and having co-operating connecting passages (e.g. 52, 54, Fig. 3), one member, e.g. 44, being manually movable (by a cable 46) and the other being movable by an automatic control device 42 (by a cable 40) in such a manner that the motor 2 may be started by the movement of either member 38 or 44. The motor 2 has a housing 6 containing a known automatic transfer valve and the device 42 is controlled by the pressure of water supplied to a jet or jets of a windscreen washer (not shown) in the manner described in Specification 801,434. Referring to Fig. 3, the block 8 has a valve seat 10 provided with ports 12, 22, 34 and 18, the port 12 being connected by a passage 14 to a vacuum hose connection 16; the passage 14 connecting with the port 18 through a restriction 20; the port 22 connecting with a central port 24 of the transfer valve which also has a side port 30 connected to one side of the vane in the motor chamber 4; the port 26 connecting with a side port 28 in the transfer valve: and the port 34 connecting by a passage 36 with the other side of the vane. The central port 24 is alternately connectable with the ports 28, 30 as the motor operates. The slide member 38 has ports 48 in line on its underface slidable on the seat 10 and two lines of ports 50 on its upper face the ports 48 and 50 being interconnected by oblique passages 52. The slide 44 has, on its face contacting the slide 38, a number of grooves 54. When the two slide members are in their extreme right-hand positions as shown, suction is applied to the passage 36 only, and the motor is " parked." However, if either member 38 or 44 or both of them is or are moved to the left, the relevant passages 54, 52 and the ports in the seat 10 are so interconnected that suction is applied to the central port 24 and thus the motor will operate.
Patent GB-1534104-A (GB)
Title: Method for producing cellulose sheetlike material
IPC: D21H13/02
Filed: 1977-01-28
Abstract: 1534104 Regenerated cellulosic sheet MITSUBISHI RAYON CO Ltd 28 Jan 1977 [9 Feb 1976] 03623/77 Heading D2B A regenerated cellulosic sheet is made by forming a wet web comprising incompletely regenerated rayon fibres, said web having a process swelling degree of 200-400% as defined, subjecting it to jet streams, and completely regenerating the cellulose by a regeneration treatment e.g. with an acid, or steam. The wet web may be formed on a conventional papermaking machine from an aqueous dispersion of cut filaments. Alternatively, the filaments may be uncut in the state of a fibrous tow which has been opened up by water streams to form a web of continuous filaments. The fluid used for the jet stream may be water. Other fibrous material e.g. synthetic fibres or wood pulp may be incorporated in the web, optionally with reinforcing yarn or scrim. A bonding agent may be used in small amounts to increase the strength of the sheet.
Patent GB-1362799-A (GB)
Title: Gas turbine engines
IPC: F02K3/02
Filed: 1972-01-26
Abstract: 1362799 Gas turbine engines DEFENCE SECRETARY OF STATE FOR 13 Jan 1972 [2 Feb 1971] 3654/71 Heading F1G A gas turbine engine comprises at least two compressors in flow series, each compressor being driven by a turbine through a respective shaft, a bleed duct being located at the downstream end of the upstream compressor, the upstream compressor and the associated driving turbine being provided with flow and speed regulating means so that the quantity of air flowing through the bleed duct can be varied as desired. The engine shown is a gas turbine ducted fan engine which comprises a fan 12 and L P compressor 14 mounted on shaft 16 and driven by L P turbine 18, I P compressor 20 mounted on shaft 24 and driven by I P turbine 28, H P compressor 22 mounted on shaft 26 and driven by H P turbine 30; also combustion equipment 32. Air is bled from the L P compressor 14 through duct 36 and is utilised for example for boundary layer control. The L P compressor is provided with variable stator vanes (not shown) and the L P turbine is provided with variable inlet guide vanes (not shown). In a second embodiment, the fan, L P compressor and H P compressor are each driven by separate turbines.
Patent GB-588358-A (GB)
Title: Improvements in and relating to granular fertilizers
IPC: C05C3/00
Filed: 1945-02-14
Abstract: A process for producing a granular ammonium chloride fertilizer comprises mixing 85-50 per cent. of ammonium chloride with 15-50 per cent. by weight of clay (on a moisture-free basis) in the presence of a minor proportion of water.  Granulation may be effected by imparting a circular, rotatory or swirling-motion, e.g., stirring or tumbling, to the mass during or after addition of water.  The clay may be dried and ground before 'mixing with dry ground ammonium chloride, the mixture granulated by adding water thereto in a granulator, e.g., a liner mixer, Eirich mixer, drum granulator or a paddle granulator, the product dried in a drier, e.g., of rotary type, and the granulate screened.  The oversize granulate may be crushed and returned to the drier and the undersized returned to the granulator or the crushed material may be screened free from fines before returning to the drier and the fines introduced into the granulator.  In the preferred process unground ammonium chloride and wet clay are mixed in a pug-, pan-, or edgerunner mill and granulated in a paddle granulator by addition of 5-10 per cent. by weight of water from evenly-distributed overhead jets.  In a modification, ammonium chloride and wet clay are mixed in a pug mill, roughly mixed or sprinkled with water, introduced into a rotary drier and granulated and dried therein.  If desired, part of the ammonium chloride may be dissolved in the water used for granulating. Specifications 389,473 and 403,781 are referred to.  The Provisional Specification describes also the use of plaster of Paris, finely ground anhydrite and chalk, one or more of which may be employed with or without clay.
Patent GB-1285666-A (GB)
Title: Improvements relating to contactless blocking circuits for push-pull oscillators
IPC: H02M7/5383
Filed: 1970-01-26
Abstract: 1285666 Control systems for gas discharge lamps CEAG CONCORDIA ELEKTRIZITATS-AG 26 Jan 1970 [29 Jan 1969] 3698/70 Heading H2H [Also in Divisions H3 and G1] A circuit for energizing a loade.g. afluorescent tube 3, comprises push-pull oscillator transistors T 1 , T 2 , oscillations initiating resistor 6 and a blocking circuit comprising transistors T 3 , T 4 , the arrangement being such that when T 3 , T 4  are conducting, the base, emitter potentials of T 2  are made substantially equal thus blocking the oscillator. The blocking circuit may be associated with a passive control circuit A<SP>1</SP>, B<SP>1</SP>, C<SP>1</SP> including a photocell 10 and an active control circuit A<SP>11</SP>, B<SP>11</SP>, C<SP>11</SP> including a mains supply circuit 14, 15 and a control transistor T 5 . In the normal state, transistor T 5  is cut off by biasing diode 12; T 3 , T 4  conduct to block oscillations and battery 1 charges up from the mains. When the mains supply fails, T 5  conducts to cut off T 3 , T 4  provided ambient light as detected by photocell 10 is below a predetermined value and circuit T 1 , T 2  oscillates to supply power to load 3. The control circuits A<SP>1</SP>, B<SP>1</SP>, C<SP>1</SP>, and A<SP>11</SP>, B<SP>11</SP>, C<SP>11</SP> may also be used separately with the blocking circuit T 3 , T 4 .
Patent GB-615453-A (GB)
Title: Improvements in refrigerant compressors
IPC: F25B27/00
Filed: 1946-02-07
Abstract: 615,453. Liquid-pressure engines. ZEHN. DER, RADIATOREN-, & APPARATEBAU, GEB. Feb. 7, 1946, No. 3934. Convention date, April 3, 1945. [Class 69 (ii)] [Also in Group XXVIII] An automatically controlled liquid pressure engine effecting the pressure stroke of a refrigerant piston compressor (see Group XXVIII) comprises a piston 8 reciprocated in a cylinder 7 by pressure oil fed through a conduit 11 by a pump 12. At the end of the stroke an aperture 33 becomes uncovered and oil flows along a conduit 20 to displace a spring-loaded piston valve 22, 23 in a subsidiary cylinder 21 sufficiently to uncover apertures 32, 34 and allow pressure oil from a branch conduit 28 and from branch conduits 13, 27 under the influence of a spring-loaded piston 16 to assist in the further displacement of the valve 22, 23 to uncover a port 35 and so provide release of pressure oil from the cylinder 7 through an exhaust conduit 29. When the piston 8 on its return stroke closes the aperture 33, the valve 22, 23 is looked in its raised position until the end of the stroke, whereupon a recess 36 connects the aperture 33 with an exhaust conduit 31 with the resulting return of the valve 22, 23 to its lowest position.
Patent GB-1363511-A (GB)
Title: Aromatic polymers
IPC: C08G75/23
Filed: 1971-02-04
Abstract: 1363511 Aromatic polymers IMPERIAL CHEMICAL INDUSTRIES Ltd 14 Jan 1972 [4 Feb 1971] 3938/71 Heading C3R  Aromatic polymers comprises repeat units -O-E- and -O-E<SP>1</SP>- in which each -O-E- unit is flanked by -O-E<SP>1</SP> units, E being the residuum of a dihydric phenol which in at least some of the -O-E- units are derived from a naphthol and E<SP>1</SP> being the residuum of a benzenoid compound having inert electronwithdrawing groups in at least one of the positions ortho or para to the valence bonds and where both said residua are valently bonded to ether oxygen atoms through aromatic carbon atoms. Preferred naphthols are, where N represents a naphthylene residue, HO-N-OH, HO-N-SO 2 -C 6 H 4 -OH, HO-N-C(R 2 )-C 6 H 4 -OH where R represents hydrogen, alkyl, aryl and the halogen substituted groups thereof. The polymers may be prepared by the reaction of an alkali metal salt of the dihydric phenol with a dihalogenobenzenoid compound in the absence or presence of potassium carbonate or an alkali metal fluoride. In Example 1 a low molecular weight polymer having terminal fluorine groups prepared by reacting the potassium salt of 4-(4-fluorophenyl sulphonyl) phenol and bis-(4-fluorophenyl) sulphone, is reacted with naphthalene-1,5 diol to produce a polymer composed of repeating units of formula In Example 2 naphthalene-1,5 diol, bis-(4- chlorophenyl) sulphone and anhydrous KF are reacted together to produce a polymer composed of repeating units of formula
Patent GB-581487-A (GB)
Title: Means for obtaining a constant current from a slightly variable alternating voltage
IPC: H02M7/06
Filed: 1944-03-03
Abstract: 581,487. Automatic current regulation. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. March 3, 1944, No. 3974. Convention date, Feb. 1, 1943. [Class 38 (iv)] In a system for producing from a slightly variable source of A.C. voltage a current having a constant mean rectified value by feeding two transformer primary windings from the source through a mainly inductive and a mainly capacitative path so as to make their ampereturns co-operate, while the current is taken from the same transformer, further compensation for fluctuations in the voltage and frequency of the source is obtained by feeding a winding on the transformer through a third current path comprising'an inductance containing saturable iron in series with an ohmic resistance, the ampere-turns of this winding being opposed to those of the two firstmentioned windings. As shown, a common primary winding 5 is employed, with an inductance 2 and condenser 4 respectively connected at its opposite ends, and the mid-point connected to one of the A.C. terminals 1. The third current path, comprising the iron-cored inductance 3 and resistance 11 may be connected to a point between the mid-point of the primary winding 5 and that end of the winding connected to the condenser 4. Alternatively the turns fed through the inductance 3 and resistance 11 may comprise a separate winding. The arrangement may also be modified by connecting the inductance 3 and condenser 4 to one or more tappings on the inductance 2 instead of directly to a terminal 1. An autotransformer may be employed. In the example a secondary winding 6 feeds a load 7 through a rectifier 8 with smoothing elements 9, 10.
Patent GB-1314307-A (GB)
Title: Gas-tight rotary shaft mountings in industrial furnaces
IPC: F16J15/16
Filed: 1972-01-28
Abstract: 1314307 Shaft seals J AICHELIN 28 Jan 1972 [23 March 1971] 4001/72 Heading F2B A rotary shaft 2 passes into an industrial furnace through a casing 1 and is sealed by one or more sealing rings 7, 7a mounted in a housing 8 associated with the furnace casing at a position along the shaft outwardly of a bearing 5, a cooling disc 11 being mounted for rotation with the shaft and provided with a thermallyconducting sleeve 16 for engagement by the sealing rings. The cooling disc 11 may be formed as a sprocket wheel or belt pulley for driving the shaft 2, prevented from rotation relative to the shaft by a key 13 and made gastight by an end plate 14. The sleeve 16 may be insulated from the shaft by an air clearance or asbestos packing 17. The sealing rings 7, 7a may be of the liptype and a sealing gas introduced between them through a pipe 19.
Patent GB-1286592-A (GB)
Title: Improvements in wet pelletizing process and apparatus
IPC: B01J2/10
Filed: 1970-01-28
Abstract: 1286592 Wet pelletizing CABOT CORP 28 Jan 1970 [3 Feb 1969] 4026/70 Heading B5A Pellets are produced from pulverulent material, e.g. carbon black, by agitating the material and a liquid to agglomerate the pulverulent material into coherent pellets and heating the inner surfaces of the housing walls through the housing sufficiently to prevent substantial build-up of caked solid matter on the inner surfaces. The walls are preferably heated to at least 150 F. by hot water or steam in a jacket or serpentine of metal bonded to the exterior surface by a thermally conductive adhesive.
Patent GB-1411204-A (GB)
Title: Production of vinyl chloride by thermal cracking of 1,2-dichloro ethane
IPC: C07C67/00
Filed: 1974-01-29
Abstract: 1411204 Vinyl chloride HOECHST AG 29 Jan 1974 [16 March 1973] 04028/74 Heading C2C Vinyl chloride is prepared by a process which comprises partially evaporating 1,2-dichloroethane in an evaporation stage 15 at a temperature within the range 200-250 C. and under a pressure within the range 20-35 atmospheres gauge; separating in a separation stage 9 liquid 1,2-dichloroethane fractions from a mixture formed of liquid 1,2-dichloroethane and 1,2- dichloroethane in vapour form; filtering at 12 the said liquid 1,2-dichloroethane fractions and recycling them to the evaporation stage, if desired in admixture with fresh 1,2-dichloroethane; introducing 1,2-dichloroethane in vapour form, which escapes near the head of the separator 10, into a heated cracking reactor 5, the vaporous matter being superheated in the heating zone within the reactor and being cracked incompletely in the reaction zone downstream of the heating zone in the reactor at a temperature within the range 450-650 C. with the resultant formation of vinyl chloride, and wherein the vinyl chloride is separated from hot cracking gas mixture at 17. The evaporation stage is preferably carried out at 230-235 C. at a pressure of 25-28 atmospheres gauge with evaporation of 30-70% by weight of the 1,2- dichloroethane introduced. It is advantageous to introduce the liquid 1,2-dichloroethane into a preliminary heating zone 4 at 20-30 atmos. gauge and 180-200 C. and passing through the separator and evaporation stage. The preliminary heating zone is preferably placed above and near the off-gas outlet of the cracking reactor. The preliminary heating zone, the evaporation stage and the cracking reactor are preferably accommodated in a furnace unit and connected to the same heat source.
Patent GB-765526-A (GB)
Title: Pure vitamins and analogs thereof
Inventor: CARRARA GINO
Filed: 1955-02-10
Abstract: The invention comprises a compound of the formula <FORM:0765526/IV(b)/1> wherein R represents phenyl or a lower aliphatic alkyl radical having 1 to 8 carbon atoms and the process for preparing an analytically pure compound of the general formula: <FORM:0765526/IV(b)/2> wherein R represents phenyl or a lower aliphatic alkyl radical having 1 to 8 carbon atoms, which comprises diazotizing one mol. of a compound of the general formula <FORM:0765526/IV(b)/3> dissolved in aqueous 2 to 3 per cent sulphuric acid containing about two mols. of alkali metal bromide, with 2 to 3 mol. of an alkali metal nitrite at 80 DEG  C., adding to the obtained mixture sulphuric acid to a content of about 5 per cent, heating to 80 DEG  C. for 7 to 8 hours, adjusting the pH between 7 and 8 with alkali metal hydroxide, stirring the solution at 0 DEG  to 5 DEG  C. for 15-60 minutes with acetic anhydride, extracting with ethyl acetate the intermediate compound of the first general formula above, and hydrolysing said compound with dilute hydrochloric acid.  As alkali metal bromide there may be used sodium bromide, and sodium nitrite may be used as the alkali metal nitrite.  Examples disclose the use of 3-amino-4-hydroxymethyl-5-aminomethylpyridine dihydrochloride substituted in 2-position by methyl, isopropyl, isobutyl, amyl, ethyl and phenyl, as starting materials.
Patent GB-223473-A (GB)
Title: Improvements in automatic lubricating apparatus
IPC: F16N7/26
Filed: 1924-02-16
Abstract: 223,473. Melotte, A. Feb. 16, 1924. Lubricant conveyed by mechanical means.- A scoop 1 is connected to a movable member 2 by means of an elastic arm 4, and takes up oil from a reservoir 3. During the movement of the arm 4, a shoulder 7 thereon engages a fixed stop 6, and during the subsequent movement the arm is stressed until the shoulder 7 slides off the stop, when the scoop receives a sudden impetus and the oil therein is projected on to the desired parts. As applied to a gear casing in which vertical axles are arranged above a horizontal shaft 2, the cover 10 upon which the oil is projected is formed with inclined grooves 11 which lead the oil to the bearings 9 of the vertical axles. The application to a reciprocating slide block is also described.
Patent GB-659781-A (GB)
Title: Improvements connected with pads used on reciprocating cutter bar type mowing machines
IPC: A01D34/17
Filed: 1949-02-15
Abstract: 659,781. Cutter - bar type mowing - machines. ALLEN & SIMMONDS (AUTOCULTO), Ltd., and BRETHERTON, F. J. Feb. 15, 1949, No. 4088. [Class 6(iii)] The knives 8 of a reciprocating cutter-bar type of mowing machine are urged into contact with the fingers 12 by pads 7 each hinged to a bracket 1 secured to the cutter bar 2 and each urged downwards against a knife by a spring 9, which also serves to hold the arm raised when the arm is moved to the raised position. The spring 9 shown acts on the pad through the medium of a ball 10 which by engaging with a projection 7b of the pad holds the latter in either its raised or lowered position.
Patent GB-1403491-A (GB)
Title: Nuclear reacotr fuel elements
IPC: G21C3/33
Filed: 1973-01-26
Abstract: 1403491 Fuel elements SIEMENS AG 26 Jan 1973 [29 Jan 1972] 4223/73 Heading G6C A reactor fuel element comprises a plurality of fuel assemblies each consisting of an array of fuel rods with means for maintaining the fuel rods in predetermined relative positions, the fuel assemblies being mounted end-to-end on a common support structure and the element including means attached to at least one of the fuel assemblies for damping transverse oscillation of the fuel assemblies when they are mounted on the support structure in a reactor cooling duct. As shown, the fuel assemblies comprise fuel rods 9 held between upper and lower rod-retaining plates 4a, 4b, with intermediate spacer grids (not shown) being used where necessitated by the length of the fuel rods. Resilient sliding shoes 11 attached to the plates 4b facilitate introduction of the fuel assemblies into cooling ducts and damp their transverse oscillation. The shoes 11 bear against the walls of a cooling duct (not shown). A support tube 1, to the lower end of which is secured a support plate (not shown), extends through central bores 8 formed in the plates 4a, 4b. As an alternative to the shoes 11, the individual fuel assemblies may be resiliently displaced relative to each other in the cooling duct, thereby causing them to abut the cooling duct as by providing each upper plate 4a with a pin 5 which engages in a corresponding bore 6 formed in the lower plate 4b of the adjacent fuel assembly, a spring 7 pressing the pin 5 to one side. Instead of bearing on each other under their own full weight, the fuel assemblies may be individually suspended from the support tube 1. As shown in Fig. 3, the tube 1 is provided with lateral projections 1a, 1b and the plates 4a, 4b are formed with corresponding recesses in their bores 8. The fuel assemblies can thus be pushed on to the tube 1 and rotated through 90 degrees shortly before reaching the location of these projections, whereupon they are suspended from the projections. The pins 5 engage once more into the bores 6 and so prevent relative rotation of the fuel assemblies. In this case, it is also necessary for the support plate at the lower end of the support rod to be fitted with a pin 5 in order that the lowermost fuel assembly, and consequently also the other fuel assemblies, are not able to rotate relative to the projections 1a, 1b. The support tube 1 is provided at its upper end with coupling elements adapted to cooperate with a gripper device of a reactor charging machine.
Patent GB-538995-A (GB)
Title: Improved process of making sealing glasses and seals for quartz lamps
IPC: C03C27/02
Filed: 1940-03-07
Abstract: 538,995. Glass manufacture; sealing glass to metal. CORNING GLASS WORKS. March 7, 1940, No. 4291. Convention date, April 22, 1939. [Class 56] [Also in Group XXXVI] A process for making low expansion glasses of high melting-point, particularly intended as seals for high-pressure mercury vapour lamps, consists in passing through a high temperature flame a gaseous mixture containing decomposable compounds of silicon, boron, and aluminium in pre-determined proportions, and depositing and vitrifying the resultant mixture of oxides. The proportions of the compounds can be varied during decomposition to form a graded seal. Apparatus for making the glass may comprise a metal barrel 11 fitted at one end with a burner 14 and provided with an electric heating element 16, a refractory boat 12 being disposed within the barrel. A supply pipe 20 communicates with an oxygen tank 21, a tank 23 of boron fluoride provided with a flow meter 24, and a flask 25 containing silicon tetrachloride, or other suitable compound which is supported in a constant temperature bath 26. The flask is provided with a byepass valve 27 and is connected to a source of combustible gas through a flow meter 23. The flame from the burner 14 is directed on to a lead-in wire 29 rotated by suitable means. In operation, aluminium chloride is placed in the boat 12, and when the gas mixed with oxygen is ignited at the burner 14, tne compounds are introduced into the gas by partly or wholly closing the valve 27, by regulating the supply of boron fluoride from the tank 23, and by regulating the heat of the barrel 11. A mixture of anhydrous oxides is deposited on the wire 29 as a tubular coating, and by controlling the introduction of the compounds into the gas, the composition of the deposit may be graded during formation so that the expansion co-efficient of successive layers decreased from that of the metal of the wire 29 to a valve suitable for sealing to silica. The tubular deposit may be removed from the wire 29 and vitrefied to form a glass tube. The aluminium compound may be omitted if a glass composed only of silica and boric oxide is desired, and small quantities of alkalies or other minor constituents may be vaporized. Specifications 438,782 and 538,891 are referred to.