baber/WOPTO huggingface dataset:
Patent GB-1144042-A (GB)
Title: Improvements in or relating to electronic valves
IPC: H01J19/36
Filed: 1966-05-19
Abstract: 1,144,042. Thermionic valves. M-O VALVE CO. Ltd., and D. F. HILL. 16 May, 1967 [19 May, 1966 (3)], Nos. 22307/66, 22308/66 and 22309/66. Heading H1D. In an electronic valve, e.g. a power tetrode, an electrode 1 which forms part of the sealed envelope, e.g. the anode, is cooled by being connected to an external cooling member 9 via an electrically insulating path 5, 7 of low thermal resistance which is formed at least partly by a part of the envelope 7 which consists of an electrically insulating material of high thermal conductivity of at least 0.1 watts/centimetre ‹C., suitable materials being alumina based, magnesium based and beryllia based ceramics. As shown, cup-shaped copper anode 1 is sealed to an annular copper ring 5 which is provided with recesses 6 to which tubular ceramic members 7, 8 are sealed. The other end of member 7 is sealed to a recess in annular copper cooling ring 9 which may itself form the heat sink or may be bolted to a heat sink, e.g. the chassis 36. A further tubular ceramic member 12 extends between the ring 9 and a thin-walled metal member 13 which may be electrically connected to the screen grid 16, and the members 9, 12 and 13 may form a decoupling capacitor for the screen grid. In a modification, Fig. 3 (not shown), the ring 5 is replaced by a cupshaped member which affords a certain resilience between the anode and the rest of the envelope. A jigging arrangement is described, Fig. 2 (not shown), to facilitate assembly and sealing with brazing rings of the anode 1, copper rings 5, 9, tubular ceramic members 8, 7, 12 and thinwalled member 13. The cooling member 9 itself may be provided with cooling fins or with ducts through which cooling fluid may be passed. The cooling member may also act as a terminal for one of the electrodes (not the one being cooled), but if it is not required to serve any electrical function it may be made of electrically insulating material of high thermal conductivity.
Patent GB-338579-A (GB)
Title: Process for refining hydrocarbons of mineral oils
IPC: C10G21/10
Filed: 1929-07-22
Abstract: 338,579. Groves, W. W., (Allgemeine Ges. f³r Chemische Industrie). July 22, 1929. Mineral oils, purifying. -The total distillate obtained from mineral oils such as crude Persian petroleum, up to 400‹ C., is refined by treatment with liquid sulphur dioxide without previous fractionation. The distillate may be freed from the benzine fraction boiling up to 100‹ C., prior to treatment. The raffinate and extract are freed from sulphur dioxide and fractionated. Specification 11140/08 is referred to.
Patent GB-258283-A (GB)
Title: Means for preventing trousers bagging at the knee
IPC: A41D1/10
Filed: 1926-09-11
Abstract: 258,283. Hentzler, H. Sept. 12, 1925, [Convention date]. Trousers.-A device for insertion into the front of the legs of trousers to prevent them from bagging at the knees consists of a long strip of material shaped to the pocket and the fly and extending to about the breadth of the knee from the band to below the knee, and provided with thick thread woven longitudinally of the device to ensure correct insertion of the device. As shown, the device 1, having cutaway portions 3, 4 at the pockets and the fly, is sewn to the band at the top, at the crutch, and to the side seams and left free at the bottom 5. The thick thread 6 acts as a pull-resisting unstretchable portion extending in the direction of the crease and can be connected thereto by stitching.
Patent GB-303036-A (GB)
Title: Process for bleaching montan wax, fractions thereof, or wax alcohols or acids obtained therefrom
IPC: C10G73/00
Filed: 1927-08-26
Abstract: 303,036. Riebeck'sche Montanwerke Akt.-Ges., A., and Hellthaler, T. Aug. 26, 1927. Mineral waxes, purifying.-Montan wax, crude or deresinified. fractions thereof extracted by solvents, or the wax alcohols and acids thereof obtained by saponification and acidification, are refined by treatment with oxidizing agents in presence of aqueous sulphuric acid. Oxidizing agents specified are hydrogen peroxide, and chromic acid or derivatives thereof. Solid or liquid inorganic or organic diluents or dispersing agents, e.g. silicic acid, clay, carbon tetrachloride, may be used to prevent thickening. In an example, 500 lb. of crude wax is deresinified in known manner, melted, and mixed with a solution of 1250 lb. of sulphuric acid monohydrate in 680 lb. of water. 500 lb. of sodium bichromate in 500 lb. of water is stirred in in 4 hours, and the mixture agitated until the solution is deep green. After settling of the mass, the upper layer, wax, is withdrawn, remelted, washed with 10 per cent sulphuric acid to remove chromium &c. compounds. and then with water. Further bleaching may be effected by treating the wax, melted or in solution, with floridin, decolorizing charcoal, or like adsorbent. The exhausted chromate may be oxidized in known manner and reused. The treatment may take place in countercurrent. Specification 292,298 is referred to.
Patent GB-1475947-A (GB)
Title: Ignition systems for internal combustion engines
IPC: F02P3/045
Filed: 1975-05-23
Abstract: 1475947 Ignition systems ROBERT BOSCH GmbH 23 May 1975 [12 Oct 1974] 22476/75 Heading F1B In an ignition system for an internal-combustion engine comprising an ignition coil 7 whose primary winding 6 forms together with an ignition switching path, transistor 18, a series circuit connectible to a current source 1, the ignition switching path being switchable to its off state at the firing instant, when the ignition switching path is conductive the primary winding 6 of the ignition coil is arranged to be transiently subjected to the influence of an additional voltage which has the same polarity as the voltage of the applied current source but which is of higher value than the latter. The additional voltage is generated by a voltage converter 12 energized by the current source 1. The voltage converter 12 comprises a storage capacitor 15, an inductive coil 13 and an auxiliary switching path 14. In a modification, (not shown), the switching of the auxiliary switching path to the conductive state is dependent upon the opening of the contact breaker switch 28.
Patent GB-517454-A (GB)
Title: Improved process and plant for the hydrolysis of cellulose materials and the like
IPC: C13K1/02
Filed: 1938-07-28
Abstract: 517,454. Glucose. FOUQUE, H. M. L. R. July 28, 1938, No. 22525. [Class 127] Cellulosic material, such as wood, bark, straw, husks, reeds, peanut shells, peat &c. is hydrolysed in several stages increasing in temperature, the hydrolysing liquid in each stage amounting to at least five times the weight of cellulosic material and the evolved gases being taken from the top of the hydrolysis vessel and bubbled in at the bottom. In the early stages, each of which lasts about half an hour, pentoses are obtained, while the later ones yield glucose. A hydrolysis vessel. Fig. 3, comprises a cylinder 121 with a steam jacket 122 having expansion elements 123. The cylinder is divided into three sections between each of which is a ring-shaped filter 145. The hydrolysis liquor is introduced at the top through a filter 125 and is circulated during treatment by being' withdrawn through pipes 137 and pumped in at the bottom. The level of liquid is maintained constant. Gases evolved are withdrawn at 154 and pumped in again at 135, together it may be with gases from other stages. The gases may be activated by ionization and may be injected in pulsations. A complete plant comprises a series of hydrolysis vessels with accompanying equipment for pumping, heating and liquid and gas storage, and treatment.
Patent GB-1015225-A (GB)
Title: Improvements in circuits for protecting electrical loads from an adverse condition
IPC: H02M1/084
Filed: 1964-06-01
Abstract: 1,015,225. Control of A.C. motors. TECUMSEH PRODUCTS CO. June 1, 1964 [June 3, 1963], No. 22551/64. Heading H2J. [Also in Division G3] A three-phase induction motor 16 is started by closing switch 18, the bias applied to transistor 52 by thermistor 34 being such that, when the temperature of motor windings 15 is not excessive, the transistors 50, 52 are conductive. Capacitor 56 is continually charged through transistor 50 and is repeatedly discharged through unijunction transistor 86, the pulse output across resistor 88 being amplified by transistor 92 to fire rectifiers 36, whereby windings 15 are energized -from source 8. When the temperature of windings 15 reaches a predetermined value, the resistance of thermistor 34 decreases to render the transistors 50, 52 non-conductive. The charging circuit of the capacitor 56 is opened, the oscillator 32 stops oscillating, and the motor is disconnected from the source. After the temperature of the windings 15 has reached a lower limit, determined by the values of thermistor 34 and resistors 72, 74, the transistor 52 conducts and the transistors 50, 52 are driven to saturation by positive feedback through resistors 76, 78. The rectifiers 36 are again fired to energize the motor. The resistor 74 may be adjusted to change the temperature at which conduction of transistor 52 is initiated. By adjusting the positive feedback which depends on the value of resistor 78, the differential between the turn-on and turn-off temperatures can be changed without affecting the turn-on temperature. A pair of similar thermistors may be each embedded directly in a separate windings 15, Fig. 2 (not shown).
Patent GB-360369-A (GB)
Title: Improvements in or relating to railway and other vehicles
IPC: B61F5/38
Filed: 1930-07-26
Abstract: 360,369. Road vehicle undercarriages. RIDLEY, M. N., 82, Harold Terrace, Burley, Leeds. July 26, 1930, No. 22559. [Class 108 (ii).] - An articulated road vehicle comprises a body platform 127 mounted at 128, 129 on a frame 100 in two parts connected together by hinges 130. The frame 100 is mounted on front and rear steering wheels 101, 102 and two pairs of central wheels 123, 124, the front and rear wheels having steering track-rods 112, 113 connected together by a lever 114 pivoted at 117 so that the track rods and therefore the corresponding steering wheels are moved in opposite directions.
Patent GB-277641-A (GB)
Title: Improvements in signal transmission systems
IPC: H03B5/34
Filed: 1927-08-27
Abstract: 277,641. Wired Radio, Inc., (Assignees of Taylor, A. H.). Sept.. 20, 1926, [Convention date]. Thermionic generators, amplifiers, and frequency-multipliers; keying systems.-An oscillating valve circuit is coupled to a power amplifying or frequency-multiplying valve in such a way that the plate supply source for the oscillator serves also for biasing the grid of the second valve. The frequency of the oscillator valve 1 is determined by a piezo-electric crystal 12 connected in its grid circuit in series with an ammeter A1 and a condenser 16, and in shunt to a coil 14 and battery 15. The plate is connected through a condenser 24 to a tuned circuit 23, 25 which has a tap connection to the grid of the amplifier or frequency-multiplier 17, the output being transferred by a tuned circuit 27, 28 to an aerial 30. Plate voltage for the valve 1 is supplied by a D.C. source 37 connected through chokes 38, 39 across the filament and plate. The positive pole of the source 37 is connected to the filament of the valve 17, whilst its negative pole is connected through a key 41 and choke 40 to the grid of that valve to give it a suitable negative bias. Alternatively, a potentiometer across the source 37 mav have its slider connected to the grid of the valve 17. Filament current is supplied to the valve 1 through a. transformer 5, the return connection for the grid and plate circuits being made to a mid-point tap connected between condensers 9. 10. A battery 21 supplies the filament of the valve 17, the plate of which is energized by a D.C. or A.C. source 32. A signal key 33 may also be provided in the latter circuit.
Patent GB-867952-A (GB)
Title: Thermistor standardizing
IPC: H01C7/04
Filed: 1959-07-01
Abstract: 867,952. Semi-conductor devices. YELLOW SPRINGS INSTRUMENTS CO. Inc. July 1, 1959 [July 1, 1958], No. 22592/59. Class 37. A thermistor 20 to be standardized is included in one arm of a bridge circuit the other arm of which includes a standard thermistor 45. Thermistor 20 is clamped by spring 17 between jaws covered with stainless steel caps 35, 47 and the standard thermistor is situated in one of the jaws and connected between cap 47 and the bridge circuit. The apparatus is connected in a housing 50 and the thermistor 20 may be reduced in size by means of a grinder 23. Heat produced during the operation is conducted to the standard thermistor by the stainless steel caps. Meter 55 indicates when the thermistors have the same resistance. Resistor 68 is included in the circuit until approximate balance is reached when it is short-circuited for the final balance by switch 72.
Patent GB-1298069-A (GB)
Title: Air intake for a gas turbine engine
Inventor: PALMER CHARLES ROBERT
IPC: F02C7/045
Filed: 1969-05-03
Abstract: 1298069 Gas turbine engines; air intakes DEFENCE SECRETARY OF STATE FOR 26 May 1970 [3 May 1969] 22669/69 Headings F1G F1J] The invention relates to air intake ducts for gas turbine engines and is described with reference to the fan duct 24 of a gas turbine ducted fan engine which comprises a fan 16 disposed within a duct defined by a double-walled casing 20. The inner wall of the fan casing is formed with a first, upstream aperture 34 and a second, downstream aperture 36, the aperture being inter-connected so as to permit a recirculatory flow or air from aperture to aperture in a downstream direction through the fan duct and in an upstream direction between the walls of the fan casing. In the embodiment the apertures 34, 36 are annular and a chamber 40 is defined between the walls of the casing by a bulkhead 38. Air under pressure is tapped from the engine compressor 12 and discharged through an ejector nozzle into the chamber 40 thus promoting the recirculatory air-flow indicated by the arrows 46. The system is not operative during normal aircraft flight when the effective intake diameter is as indicated at a. At landing the system is operative and the effective diameter of the intake is as indicated at b thus causing "choking" of the intake throat with intake flow velocity approaching sonic whereby passage of noise out of the intake is effectively reduced. Doors may be provided so as to cover the apertures 34, 36 when the system is inoperative. The aperture 36 may alternatively be located at position 50 downstream of fan 16 so that air pressurized by the fan passes into the chamber 40 to cause the re-circulatory flow.
Patent GB-719748-A (GB)
Title: Improvements in wheeled carriers for golf-clubs
IPC: B62B1/04
Filed: 1952-09-10
Abstract: 719,748. Golf-bag carriers. WEATHERSHIELDS, Ltd., and SMITH, H. A. G. Nov. 9, 1953 [Sept. 10, 1952], No. 22682/52. Addition to 658,596. Class 108(1) A backbone - member 1 of a golf-bag carrier has secured to its upper end, by means of a pivoted bracket 3, a handle member 4 carrying a pair of pressings 14 in which the leg members 11 are rotatably secured. The lower ends of the leg members 11 carry stub axles for the road wheels 10, and rotatable sleeves 16 to which are pivoted stay members 12 which are also pivotally secured to a yoke member 18 carried by lug 21 secured to the frame member 1. The handle member 4 and the backbone member 1 overlap and are retained in the erected position by a catch 5.
Patent GB-1035135-A (GB)
Title: Drawing instrument
IPC: B43L7/04
Filed: 1964-06-03
Abstract: 1,035,135. Circular curve drawing instrument. G. E. MOORE, and A. T. E. MOORE. June 3, 1965 [June 3, 1964], No. 22876/64. Heading B6P. An instrument for drawing arcuate curves comprises a carriage 10 having two portions 12 and 13 each having a pair of wheels mounted on coaxial axes. One portion of the carriage is pivoted to the other about an axis which is situated on a medial line normal to the axis of rotation of each pair of wheels. A marking instrument 30 is attached to a bar 28 pivoted between two blocks 29. The two carriage portions are clamped by a wing-nut in the adjusted position for a particular radius, and the carriage is then propelled across the surface to be marked. The degree of adjustment can be set with a scale 32, Fig. 2 (not shown), on one carriage portion against a marker on the other carriage portion. Alternatively a sine bar or a slip gauge can be used to set the adjustment, the bar or gauge being positioned between a plane surface 26 on one carriage portion and both or one accurately positioned setting stud 24 mounted on the other carriage portion. As a further alternative one carriage portion may have a single wheel instead of a pair.
Patent GB-661830-A (GB)
Title: A method of producing an emulsion of the oil-in-water type
IPC: C09K23/00
Filed: 1949-09-03
Abstract: 661,830. Internal remedy. AKTIEBOLAGET LEO. Sept. 3, 1949 [Sept. 21, 1948, and Feb. 5, 1949], Nos. 22891/49; 22892/49. Class 81 (i). An antacid preparation for the treatment of gastric ulcers comprises mixture of magnesium trisilicate, vegetable oil and water, emulsified and suspended in the presence of a natural polysaccharide derivative containing acid saltforming groups, such as water soluble salts of alginic acid, agar-agar, pectin, sterculia gum or a mixture of gum arabic and tragacanth. 30-50 per cent of arachis, olive, sesame, cotton seed, soya bean, or rape oil and 5-10 per cent of magnesium trisilicate may be emulsified with less than 1 per cent of the polysaccharide derivative, for example 0.15-0.80 per cent of sodium alginate. The Specification as open to inspection under Sect. 91 comprises also the use of mustard, poppy seed and paraffin oil. This subject-matter does not appear in the Specification as accepted.
Patent GB-1460301-A (GB)
Title: 2,6-diazo-4-thia-bicyclo-3,2,0-hept-2-en 7-ones and methods  for their preparation
IPC: C07D499/00
Filed: 1973-05-15
Abstract: 1460301 2,6 - Diaza - 4 - thia - bicyclo[3,2,0]- hept-2-en-7-ones BEECHAM GROUP Ltd 14 Aug 1974 [15 May 1973] 22983/73 Heading C2C Novel compounds I  in which X is hydrogen or halogen, R is hydrogen, mercapto, C 1-6  alkylthio, azido, cyano or an alkyl, aryl or aralkyl group optionally substituted by a group R<SP>1</SP>OCO- (where R<SP>1</SP> is C 1-6  alkyl, phenyl or benzyl) and optionally linked via an oxygen or nitrogen atom and Y is hydrogen or a group Me 2 C=C(Z)- (in which Z is a carboxylic acid group or a salt or ester thereof) with the proviso that X and R are not both hydrogen, are prepared reacting a compound III in which Z is an esterified carboxylic group with (a) a base to form a compound I (Y = H and Z = esterified carboxylic) or (b) with an alkyl hypohalite to form a compound I (Y=halogen, and Z = esterified carboxylic); and if desired converting the esterified carboxylic group to the free acid or salt thereof or oxidizing it to hydrogen. Compounds I prepared are those in which X = H or Cl, Y = H or Me 2 C = C(COOB 3 )- and R=MeS, B 3 , CH 2 OOMe or CH 2 CH 2 COOB 3 .
Patent GB-1199224-A (GB)
Title: Cross-Linking Process
Inventor: BATES ROBERT FREDERICK
IPC: B29C48/08
Filed: 1968-05-15
Abstract: 1,199,224. Cross-linking polymers. IMPERIAL CHEMICAL INDUSTRIES Ltd. 21 April, 1969 [15 May, 1968], No. 23171/68. Heading C3P. Shaped articles of cross-linked polymeric material are prepared by subjecting a shaped article of a crystalline polymer containing a thermally activatable cross-linking agent to a pressure sufficient to cause a rise of at least 10 C. in the crystalline melting point of the polymer, and heating the article while under pressure to a temperature below the crystalline melting point of the polymer at the applied pressure and at which cross-linking will occur. Specified polymers are polyethylene, polypropylene, polyamides and polyesters, e.g. nylon 66 and polyethylene terephthalate. Preferred cross-linking agents for polyolefins are peroxides, optionally with non-conjugated polyenes, e.g. polyunsaturated esters and poly-α- alkenyl aromatic hydrocarbons. The article may be a sheet, film, fibre, pipe or pipe fitting, and the pressure may be applied via a liquid or gaseous medium, particularly water. Some cross-linking may be effected at temperatures above the crystalline melting point. Examples describe the cross-linking of polyethylene in the presence of (1 and 2) dicumyl peroxide and (3,4 and 8 to 11) di-t. butyl peroxide; and of polypropylene with (7) 1,1,4,4,7,7-hexamethyl cyclo-4,7-diperoxynonane.
Patent GB-718668-A (GB)
Title: Improvements relating to fireplaces
Inventor: HOULT FREDERICK HERBERT
IPC: F24B1/191
Filed: 1952-09-17
Abstract: 718,668. Fireplaces. NEWTON, CHAMBERS & CO., Ltd. Oct. 29, 1953, [Sept. 17, 1952.] No. 23353/52. Class 126. A fireplace fret is provided at each side with a rearwardly extending member which can be forced outwards relatively to the fret to engage the firebricks at the sides of the fireplace. A fret 4 for a slow combustion open fireplace has members 14 at each side with a rear part 31 with a fluted outer face which is drawn into engagement with the side firebricks 2 by tightening a screw passing through a lug 18 and the side of the fret. Projections 24, 26 on the member 14 engage lugs 28, 30 on the side of the fret 4 to prevent the member moving while the screw is loose. A slotted lug 33 is secured to the floor of the fireplace.
Patent GB-461284-A (GB)
Title: Improvements in brakes
IPC: F16D51/24
Filed: 1935-08-20
Abstract: 461,284. Internal shoe brakes. BENDIX AVIATION CORPORATION. Aug. 20, 1935, No. 23357. Convention date, April 30. [Class 103 (i)] An internal shoe brake comprises an unanchored shoe 18 having a link 22 adapted to transmit thrust to a shoe 14 anchored on a fixed pivot 16. The normal rotation of the brake drum, in this case counter-clockwise, tends to swing the shoe 14 away from the drum and the link 22 counteracts this. Friction washers 26 are held tensioned by the rivetedover ends of the floating pivot 24 and allow the shoe 18 to adjust its position automatically. Modifications are shown in which shoe 18 is shorter and the link 22 is arranged at different angles and connected to the shoes in different position.
Patent GB-1489065-A (GB)
Title: Shock absorber
IPC: E01F15/14
Filed: 1975-05-22
Abstract: 1489065 Shock absorbers BRITISH STEEL CORP 22 May 1975 [24 May 1974] 23369/74 Heading F2E A shock absorber for use in motor vehicles comprises a crushable cylindrical housing 1 of metal sheet (e.g. tinplate) sealed at its ends and enclosing at least one length of metal sheet in the form of a coil 4 the housing 1 and the metal sheet providing a selected crush resistance against impact along the longitudinal axis of the housing 1. According to Fig. 1 the coil 4 is of corrugated sheet and has adjacent windings interleaved with a spacer in the form of a sheet 3. In the embodiment of Fig. 2 the metal sheet is in the form of a coil 7 provided with depressions or dimples 8, a spacer sheet 3 being provided. In the embodiment of Fig. 3 (not shown) a corrugated coil (4) is disposed in the annular space between the housing (1) and a can (9) located within it, and in Figs. 4, 8 (not shown) the can (9) also encloses a further coil (10) of corrugated sheet with a spacer sheet (13). Figs. 5, 6 (not shown) illustrate similar arrangements to Figs. 3, 4, but with dimpled coils (7, 11). Fig. 7 shows an arrangement similar to Fig. 4 wherein the interstices are filled with filler material 12, e.g. plastics foam. The spacer sheets may be of steel, particularly tinplate, or cardboard. The shock absorber may be located between a bumper and a vehicle body, and may incorporate a rubber or elastomeric shock absorbing pad to withstand low speed impacts.