baber/WOPTO huggingface dataset:
Patent GB-562884-A (GB)
Title: Improvements in or relating to pressure regulating devices
IPC: B60T8/26
Filed: 1942-12-07
Abstract: 562,884. Fluid - actuated valves. BENDIX AVIATION CORPORATION. Dec. 7, 1942, No. 17399. Convention date, April 11, 1942. [Class 135] [Also in Group XXXIV] In a pressure-limiting valve device which may be interposed between the hydraulic master cylinder and the front wheel brakes of a vehicle brake system, the pressure liquid acts upon differential areas of a plunger against the pressure of a spring to control the valve and the spring pressure is adjustable by a member operable from the exterior of the device and having a projection arranged to seat upon the helical surface of a stop member. The device shown comprises a casing 20 provided with ports 23, 24 adapted to be connected'respectively to an hydraulic master cylinder, and to the front brakes of a vehicle. The master cylinder is connected directlv to the rear brakes. A plunger 37 under the pressure of a spring 42 normally holds open a valve 34 by means of a projection 36, to establish the connection of the master cylinder with the front brakes through port 23, chamber 26 and passage 27. The chamber 29 is connected to passage 27 by passage 28. When the fluid pressure established by the master cylinder acting upon the end face of the plunger port 38 overcomes the fluid pressure acting in chamber 29 upon the annular area between the plunger ports 37, 40 and the pressure of the spring 42, the plunger moves to the right and the valve 34 closes. To permit adjustment of the pressure of the spring it abuts on the part 43 of a rod 44 provided with a pin 46 adapted to seat on 'one or other of a series of steps 48 formed in the helical surface of an annular member 47, adjustment being effected by turning the cap 45. A passage 50 permits escape of liquid which leaks past the plunger.
Patent GB-1008133-A (GB)
Title: Electrolyte for primary battery cells
IPC: H01M6/04
Filed: 1964-04-27
Abstract: 1,008,133. Primary cells. DOW CHEMICALS CO. April 27, 1964 [May 20, 1963], No. 17399/64. Heading H1B. An electrolyte for a primary battery utilizing a magnesium anode comprises an aqueous mixture of (1) an alkali metal or an alkaline earth metal salt of either an aliphatic carboxylic acid having a chain length of from 1-5 carbon atoms exclusive of carboxy group carbon atoms and at least one methylene or methyl radical for each carboxy group or an aromatic carboxylic acid having at least two carboxy groups on each ring of the aromatic acid and (2) an alkali metal or an alkaline earth metal inorganic perchlorate salt.
Patent GB-799433-A (GB)
Title: Improvements in and relating to synchronisation in signalling systems
IPC: H04N9/455
Filed: 1955-06-16
Abstract: 799,433. Automatic frequency and phase control systems. MAURICE, R. D. A., VIGURS, R. F., and LORD, A. V. June 15, 1956 [June 16, 1955], No. 17462/55. Class 38 (4). A television receiver oscillator 10 is synchronized by frequency and phase discriminators 13, 12 applying their outputs to a common reactance tube 11 controlling the frequency and phase of the oscillator, recurrent phase reference subcarrier bursts being applied, together with the oscillator output, to the phase discriminator 12, and received oscillations having a constant relation to the frequency of the reference bursts, after frequency conversion by beating with the controlled oscillator 10 in a mixer 21 being applied to the frequency discriminator 13 to control the oscillator frequency. The control frequency may be derived by applying the sound and vision carriers through limiters 18, 19 to a mixer 20 deriving the frequency difference, provided the latter at the transmitter differs from the frequency of the sub-carrier bursts by a fixed amount. Alternatively, the control frequency may be derived from the line or field frequency synchronizing pulses. The output of mixer 20 and oscillator 10 may have a frequency ratio of 4: 3. In a modification, the output of mixer 20 is multiplied in frequency by 3 and divided by 4, so that the mixer 21 and discriminator 13 may be replaced by a frequency difference detector.
Patent GB-225154-A (GB)
Title: Improvements in transporting or protecting devices for sparking plugs
IPC: B65D81/113
Filed: 1924-07-22
Abstract: 225,154. Beru Akt.-Ges. April 4, 1924, [Convention date]. Fittings, internal.-A protective casing for sparking-plugs comprises a hollow mass of resilient material adapted to grip portions of the plug without substantial deformation of its outer surface. As shown, a cylindrical rubber or other resilient casing a is slit at the top to allow access to the interior, and the nut c, the shank b, and the screw thread d of the plug are gripped by the casing so as to allow a free space for the electrodes e, f. A casing may be constructed to receive a number of plugs, or may enclose only the parts b, f.
Patent GB-1315456-A (GB)
Title: Television brightness control
IPC: H04N9/72
Filed: 1971-05-27
Abstract: 1315456 Colour television receiver INTERNATIONAL STANDARD ELECTRIC CORP 27 May 1971 [20 June 1970] 17517/71 Heading H4F Brightness control in a colour television receiver is effected by clamping the luminance signal, before it is matrixed with a colour difference signal, with the aid of square pulses of adjustable magnitude. As shown, a (D.C. clamped) luminance signal is applied at terminal 1 and the square pulses are derived from the voltage at capacitor 16, the magnitude of which is controlled by potentiometer 17, when the diodes 8 and 15 are rendered conductive by horizontal flyback pulses applied to terminal 10. The resulting clamped luminance signal is then matrixed with a colour difference signal applied to terminal 11 to form a colour video signal which is passed to output 31 via a video amplifier 19-40. Alternatively the clamped luminance signal may be passed to output terminal 2. The video amplifier includes a trimmer resistor 28 to compensate for possible differences in the control-voltage requirements of the three guns in a colour display tube, and a trimmer resistor 34 which derives from the flyback pulses at terminal 40 a control signal for presetting the amplifier operating point so that it is not driven beyond its operating range by the maximum white level.
Patent GB-918621-A (GB)
Title: Improvements in stainless steel
Inventor: IRVINE KENNETH JAMES
IPC: C22C38/52
Filed: 1958-06-02
Abstract: In steel containing .0.03 to 0.12% C, .15 to 18% Cr, .3 to 7% Ni, .1 to 3% Mn, .and up to 1% Si, .0.5 to 5% Co, .0.5 to 3% Mo, together with .0 to 2% Al, .0 to 3% Cu, .0 to 0.5% Ti and .0 to 1% Nb, the amounts of these last four elements is such that the steel contains one of the ageing systems constituted by .0.5 to 2% Al, .0.5 to 3% Cu, .0.2 to 0.5% Ti, .0.2 to 1.0% Nb, .the balance being Fe The steel may be solution-treated to render it austenitic at between 900 DEG and 1100 DEG  C., fabricated in this state and then transformed to the martensitic state and may be precipitation-hardened afterwards. To do so it may be heated at 700 DEG C. for 2 hours and cooled to room temperature or refrigerated, e.g. at about -80 DEG  C., before hardening.
Patent GB-826395-A (GB)
Title: Preparation of í¸-steroids
IPC: C07J75/00
Filed: 1957-06-03
Abstract: The invention comprises steroid compounds of the general formula <FORM:0826395/IV (b)/1> wherein R and R1 represent hydrogen or alkanoyl radicals containing 1 to 6 carbon atoms and the preparation thereof by oxidizing the corresponding 16a ,21-di-alkanoyloxy derivatives of 11b ,17a  - dihydroxy - 1,4 - pregnadiene-3,20-dione, and, if desired, saponifying the product to form 16a ,17a ,21-trihydroxy-1,4-pregnadiene - 3,11,20 - trione. Suitable oxidizing agents are chromium trioxide in pyridine, potassium dichromate in dilute sulphuric acid and chromic acid in acetic acid.  In the example 16a ,21 - diacetoxy - 17a  - hydroxy - 1,4 - pregnadiene is prepared.  16a ,21 - Dialkanoyloxy derivatives of 11b ,17a -dihydroxy - 1,4 - pregnadiene - 3,20 - dione are prepared by a reductive fermentation process from 11b ,16a ,17a ,21 - tetrahydroxy - 4 - pregnene-3,20-dione, e.g. by the action of the fungus Cormebacterium simplex, to form 11b ,16a ,17a ,21-tetrahydroxy - 1,4 - pregnadiene - 3,20-dione, which may then be acylated, e.g. with acetic anhydride and pyridine.  Specification 824,351 is referred to.
Patent GB-1355322-A (GB)
Title: Process for dehydrogenation
IPC: C07C69/15
Filed: 1971-05-27
Abstract: 1355322 Dehydrogenation EASTMAN KODAK CO 27 May 1971 [28 May 1970] 17618/71 Heading C2C [Also in Division C5] Compounds of formula in which R is hydrogen, an alkyl or aryl group and R<SP>1</SP> is hydrogen, or an alkyl, aryl, alkoxy, acyl or carboalkoxy group are dehydrogenated by heating at 400 to 625 C. in admixture with molecular oxygen and an iodine catalyst with a vanadia or iron oxide promoter on an inert support at a concentration of from 0À01 to 1% by weight of the support. Alkanes, alkenes, alkyl halides, ketones, ethers, esters, aldehydes, acids, alkyl aromatic compounds, cycloalkanes and cyanoalkanes may be dehydrogenated and examples describe the preparation of methyl methacrylate from methyl isobutyrate, using alundum, silicon carbide, zircon and silicaalumina supports. Other compounds prepared are methyl acrylate and 2-methyl pentenoate, vinyl acetate and methacrylate, phenyl acrylate and methacrylate, methyl vinyl ketone and divinyl ketone, acetophenone, acrylic, methacrylic, 2-ethylhexenoic and crotonic acids, maleic anhydride, and methacrylonitrile and acrylonitrile.
Patent GB-1502298-A (GB)
Title: Underbed thread trimmer for chainstitch sewing machine
IPC: D05B73/12
Filed: 1975-04-28
Abstract: 1502298 Sewing machine thread cutter SINGER CO 28 April 1975 [9 May 1974] 17651/75 Heading DIG  An underbed thread trimmer in a chainstitch machine comprises two ledger blades 16, 18 adjustably mounted on the bed 10, a thread catcher 36 pivoted to the bed and having needle thread and looper thread engaging means 72, 70 with cutting edges (74 Figs. 3-5 not shown) co-operable with respective ledger blades, one ledger blade having means 30 for retaining a length of the looper thread subsequent to cutting. The catcher is mounted on a shaft 44 rotatable by a crank and ball link coupling connecting it to a solenoid 60. As the catcher 36 swings through the sewing position the fork ends 70, 72 respectively engage the looper and needle threads to carry them to the respective blades 18, 16, end 70 entering between blade 16 and a thread retaining coil 34 carried below the blade at the end of a leaf spring 32. On the return of the catcher a severed end 100 of the looper thread is trapped between coil 34 and the blade.
Patent GB-222241-A (GB)
Title: Improvements in speed change mechanism for motor vehicles
IPC: F16H3/66
Filed: 1923-07-07
Abstract: 222,241. Soc. Anon. des Motocyctettes & Automobiles Viratelle, and Nambotin, J. July 7, 1923. Variable-speed epicyclic gearing comprises aligned driving and driven shafts 1, 3, Fig. 2, with gears 2, 4 thereon meshing each with two planet gears 7, 6, respectively, upon two planetary shafts 5, each of which carries planet gears 9, 10 on its two ends meshing with loose sun gears 11, 12. The shafts 5 are carried by a loose drum 8 and pass through the cheeks 48, 49 thereof, the gears 9, 10 being outside the drum. The sun gears 11, 12 are integral with brake drums 13, 14 aligned with the drum 8, and two reduced speeds and reversed driving respectively are obtained by applying brakes 16, 17, 18 to the drums 8, 13, 14. The top speed is a solid drive obtained by closing a clutch 35 between one of the end drums 13 and an annular flange 8' projecting from the drum check 48. The clutch and the three brakes are operated alternatively by four plungers 20, 20<1>, 20", 20<111>, Figs. 3 and 4, sliding transversely in a fixed guide 19. These plungers are thrust inwards selectively by a cam 21, which is slid along a shaped shaft 22 to select, and turned to operate by a pinion 22<1>. Each brake comprises a band such as 16, Fig. 3, adapted to be tightened on its drum by a plunger 20<11> &c., and to be adjusted by screws 16". The clutch plunger 20, Fig. 4, acts through a lever 24 to thrust a central cone 28 axially. This thrusts radially a plunger 30, Fig. 5, which is carried by the drum 13 and through a spring-pulled lever 32 and toothed sector 34 tightens a clutch band 35 upon the flange 8<1>, locking all the parts together.
Patent GB-1343942-A (GB)
Title: Procedure for obtaining 6-amino-penicillan-acid
IPC: C07D499/42
Filed: 1971-05-28
Abstract: 1343942 Production of penicillanic acid "GALENIKA" PHARMACEUTICAL & CHEMICAL INDUSTRY 28 May 1971 [1 June 1970] 17784/71 Heading C2A A process for the conversion of benzyl penicillin to 6-amino-penicillanic acid which comprises reacting the benzyl penicillin with an acyl chloride to form a mixed anhydride of general Formula I wherein acyl represents the acyl group of the acyl chloride and removing the amino protecting acyl group to produce 6-amino-penicillanic acid. The chloride may be a chloride of an aliphatic carboxylic acid, a dicarboxylic acid, an aromatic carboxylic acid or an aromatic sulphonic acid. The mixed anhydride produced as above may be further reacted with PCl 5  at a temperature in the range of +25‹ to -80‹ C. The further reaction product may be reacted with an alcohol of chain length C 2  to C 8  which may be straight chain or branched at a temperature of between +25‹ to -80‹ C. Thus the invention claims 6-aminopenicillanic acid when prepared by the above process.
Patent GB-673528-A (GB)
Title: Improvements in and relating to toy vehicles
IPC: A63H17/06
Filed: 1950-07-17
Abstract: 673,528. Toy vehicles. MARX & CO., Ltd., L. (Marx, L.). July 17, 1950, No. 17844/50. Class 132 (iii). A toy clockwork vehicle which also tips its body, stops periodically when its only driving wheel is raised off the ground by a jacking device comprising a foot 17 which is forced down into contact with the ground. The foot 17 is part of a slide 16 the end 17 having a stud 18 engaging a cam slot 19, 20 in the side plates to lower the foot. The slide 16 is pulled to the right for jacking up by one arm of a two armed lever 11 which is rocked by one or other of the lugs 13, 14 on the main driving pinion. Racing of the clockwork motor is minimised by a flyweight 25 geared to a pinion 29 on the drive wheel axle 4. Tipping.-The body B is tipped about its trunnions 35 by a ram 43 which is pushed up by one of the lugs 13, 14 on the clockwork pinion 1, the lug engaging a web 51 between the horizontal parts of the L-shaped ram. When the lug passes the web 51 the body B tips back by gravity. The drivers head 56 is automatically turned round to look back when the vehicle is stopped by the foot 17. This is obtained by the same stopping motion of the slide 16 whereby its other end 16<SP>1</SP> rotates a crank 58 of a vertical spindle 57 to which the head is attached.
Patent GB-909744-A (GB)
Title: A lock mechanism
IPC: E05B47/02
Filed: 1959-05-26
Abstract: 909,744. Solenoid-operated bolts. CLARKE, F. M. Sept. 21, 1959 [May 26, 1959], No. 17902/59. Class 44. A lock mechanism comprises a locking bolt 7 which is movable endwise between its locked and unlocked positions by means of an actuating member separate from and mounted for movement transversely of the locking bolt, the actuating member including means 6 adapted to engage the locking bolt in either of its two positions and move it into the other position. The actuating member shown consists of the means 6 which is a leaf spring and a member 3 which is the armature of a solenoid. The member 3 is biased upwardly by a spring 5. Energization of the solenoid coil moves the member 3 downwardly and the means 6 engages one or other of two branches 8<SP>1</SP>, 8<SP>2</SP> of a recess 8 on the bolt to withdraw the bolt or vice versa depending on which branch of the recess is engaged. The lock mechanism may be used for a motor vehicle, three of the doors having such a mechanism controlled by a key switch on the driver's door and if desired by an additional switch on the dashboard.
Patent GB-760367-A (GB)
Title: Improvements in and relating to the production of hydroperoxides
Inventor: BERNEIS KURT HELMUT
IPC: C07C409/12
Filed: 1954-06-18
Abstract: Hydroperoxides are produced in a process in which an aromatic hydrocarbon containing the grouping <FORM:0760367/IV(b)/1> where Ar is a phenyl group which may contain one or more alkyl substituents, and the grouping <FORM:0760367/IV(b)/2> is part of a saturated hydrocarbon radical which is an alkyl or cyclohexyl group, is contacted in the liquid phase with a gas containing free oxygen at an elevated temperature in the presence of an oxidation catalyst comprising copper or silver, the silver content of the reaction mixture when a silver catalyst is used being 0.1 to 400 parts per million based on the weight of hydrocarbon to be oxidized, the silver being provided initially as an organic acid salt soluble in the reaction mixture, and the copper content of the reaction mixture when a copper catalyst is used, being 4 to 12 parts per million based on the weight of the hydrocarbon to be oxidized, the copper being provided as a salt of formic acid or acetic acid and the reaction being carried out when a copper catalyst is used at a temperature above the boiling-point of said formic or acetic acid.  Aromatic hydrocarbons mentioned include cumene, the cymenes, di-isopropyl benzenes, especially the 1 : 3 and 1 : 4 isomers, sec.-butylbenzene, di-sec.-butylbenzenes especially the 1 : 3 and 1 : 4 isomers and cyclohexylbenzene. Where the hydrocarbon contains two groups capable of undergoing oxidation to hydroperoxide groups a mixture of mono- and di-hydroperoxides is obtained as product.  Silver catalysts mentioned include the acetate, stearate, naphthenate and benzoate.  A hydroperoxide may be present in the initial reaction mixture and a portion of the product, e.g. cumene hydroperoxide, may be recycled for this purpose.  The process may be carried out at normal or elevated pressure.  Inert diluents mentioned include mono-chlorobenzene, mixtures of dichlorobenzenes, higher chlorinated benzenes, e.g. as produced in chlorinating benzene to obtain chlorobenzene and tetrachlorethane.  The hydroperoxides produced by the process may be used as accelerators in polymerization and oxidation reactions and in the production of phenol and ketones, e.g. cumene hydroperoxide may be converted to phenol and acetone by treatment with a mineral acid or an activated earth.  In examples: cumene hydroperoxide is obtained by treating cumene containing cumene hydroperoxide and copper formate with oxygen at elevated temperature (1); and in processes similar to (1) copper formate and silver acetate are employed as catalysts.  For comparison runs are made without catalysts in examples and manganese naphthenate is compared with copper formate as catalyst in the oxidation of cumene with air. Specifications 665,897, 665,898, 714,545 and 714,836 are referred to.
Patent GB-314067-A (GB)
Title: A process for softening water
IPC: B01J49/53
Filed: 1929-06-11
Abstract: 314,067. Rosenheim, A. June 23, 1928, [Convention date]. Purifying liquids. - Water is softened with base-exchanging substances in the preparation of which the relative proportions of amphoteric metal oxide and silicic acid used are 50 chosen that the products do not yield silicic. acid to water when used to soften the latter, but. extract it therefrom. Regeneration of the products after use with removal also of absorbed silica is effected by simultaneous or successive treatment with or without pressure with common salt solution and alkalies, hot water, or carbon dioxide. In preparing the base-exchanging substances from silicic acid sols 4.5-5 mols. SiO2 should be present for each mol. Al2O3 and 1 mol. SiO2 for each mol. Fe2O3; in their preparation by precipitating an alkali silicate with solutions of salts of amphoteric metal 4 or less mols. SiO2 should be present for each mol. Al2O3, or for each 4 mols. of Fe2O3, and more than 0.81 mols. of zirconium oxide for each mol SiO2; and in their preparation by fusion methods 2 mols. SiO2 should be present for each mol Al2O3. Illustrative examples relate to the production of the required substances from a silicic acid sol. by treatment with aluminium or ferric chloride or zirconium oxychloride, and caustic soda; from a solution of sodium metasilicate bv treatment with aluminium chloride or zirconium oxychloride, and caustic soda; and by a fusion process from a mixture of soda, potash, potash feldspar, and alumina, with hydration of the fusion product. In the wet methods of preparation chlorides used may be replaced by sulphates or mixtures be employed, and caustic potash, ammonia, alkali borates or carbonates, alkaline earth bases, or aluminates replace caustic soda. Treatment of the products with common salt solutions before use is always preferred and sometimes necessary. Specification 286,307 is referred to. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the following subject-matter : the use of base exchanging substances which neither remove silicic acid from nor yield it to the water treated, and, in some examples, of substances which yield silicic acid to the water; and their regeneration with common salt solution only. This subject-matter does not appear in the Specification as accepted.
Patent GB-933590-A (GB)
Title: Method of rectifying alignment errors in permanent way tracks
IPC: E01B35/00
Filed: 1960-05-20
Abstract: 933,590. Setting-out curves. F. PLASSER, [trading as FRANZ PLASSER BAHNBAUMASCHINEN]. May 20, 1960 [May 29, 1959], No. 17979/60. Class 97 (2). To rectify alignment errors in permanent way tracks within a section of track G delimited by a chord 2, a value is measured at a point 1 on the track with reference to chord 2, an analogous value is calculated from this in relation to a shorter chord 3 and the track is then shifted, conveniently at the end 4 of chord 3 which is forwardly in the direction of working, until the calculated and measured values are equal. As shown in Fig. 1, the arc height F is measured, arc height f is calculated therefrom and then point 4 on the track is moved until the calculated and measured values of f are equal. In a modification, Fig. 2, either the angle α/2 is measured and then angle #/2 calculated therefrom, or angle # is calculated from angle #.
Patent GB-1451275-A (GB)
Title: Stepwise positioning device
IPC: G11B5/55
Filed: 1974-04-24
Abstract: 1451275 Recording and playback; head mountings INTERNATIONAL BUSINESS MACHINES CORP 24 April 1974 [30 May 1973] 17989/74 Heading G5R A body is moved approximately to a desired one of a series of positions by positioning means resiliently connected to the body and is then moved against the resilient connection to the precise position by adjustment means including a rigid part engaging the body. As shown, in a track selector a magnetic transducer la in a head carrier 1 is secured to a positioning plate 3 by spring clips 6 and is located when at rest by the engagement of a tooth 5 of the head carrier 1 between two adjacent teeth 15 of a rack 10. Depression of a knob 27 retracts the rack 10, and rotation of the knob 27 then moves the plate 3 by means of a windlass 23 having teeth 28 which correspond to those on the rack 10 and click past a spring detent 29. On the release of the knob 27, the rack 10 reengages the tooth 5 and positively locates the head carrier 1.