baber/WOPTO huggingface dataset:
Patent GB-807203-A (GB)
Title: Improvements in or relating to the production of steroid compounds
IPC: C12P33/00
Filed: 1956-06-27
Abstract: 21-Hydroxy-steroids of the pregnane series which may be saturated or unsaturated and substituted or unsubstituted are prepared by submitting steroids of the pregnane series unsubstituted at the 21-position to aerobic fermentation under submerged conditions by means of a culture of Colletotrichum Lindemuthianum IMI 63364, the desired 21-hydroxy-steroids being isolated by chromatography, recrystallization or conversion into derivatives.  The usual type of media for micro-biological oxidations may be used.  In the examples D 1-dehydrocortisone is prepared from 17a -hydroxy- D 1,4-pregnadiene-3,11,20-trione.  In a similar manner progesterone and 3,20-pregnadione are 21-hydroxylated.  Specification 760,362 is referred to.
Patent GB-1179284-A (GB)
Title: Improvements relating to the Production of Resin-Coated Sand.
Inventor: GRIGG ROGER CHARLES
IPC: C08L61/06
Filed: 1967-05-02
Abstract: 1,179,284. Phenolic resins; compositions. FORDATH Ltd. 16 April, 1968 [2 May, 1967], No. 20149/67. Heading C3R. Sand is coated with a composition comprising a novolak and 20-50% of a resole prepared in the presence of alcoholic alkali. The resole and novolak may be prepared from phenol and formaldehyde. The novolak may be ortho, paralinked or para, para-linked. For the resole 1À1- 3-5 moles of aldehyde may be used per mole of phenol. The alcohol may be MeOH or EtOH and the alkali NaOH or NaOEt. The phenol, aldehyde and alcohol may be heated in a jacketed kettle and the alkali added slowly before the mixture is refluxed. The coated sand may also include a wax and up to 5% of hexa-methylene tetramine as curing agent.
Patent GB-697015-A (GB)
Title: Method of and apparatus for continuously supplying and maintaining uniform the composition of a composite liquid
Inventor: HANNAY ROBERT STEWART ERSKINE
IPC: B01F5/10
Filed: 1950-08-15
Abstract: 697,015. Mixing fluids in flow. STANDFAST DYERS & PRINTERS. Ltd. July 25, 1951 [Aug. 15, 1950]. No. 20206/50. Class 86 [Also in Group XXIX] A method of continuously supplying and maintaining uniform the composition of a mixture of component liquids consists in continuously circulating each liquid in an independent circuit at a constant rate of flow and intermittently but synchronously diverting the flow to a common location. As shown, liquid, e.g. dye, is pumped at a constant rate by pump 21, Fig. 1, from the supply tank 10 to a constant-head tank 16 from which it is supplied to the circuit 12, 22, 13 back to the tank, excess flow being by-passed back to the tank via pipe 14. In the circuit is a nozzle 19 which diverts liquid into a vessel 23 where it is mixed with liquid from other circuits. The nozzles in selected circuits are connected to a spring-loaded piston 46, Fig. 2, which is operated by compressed air supplied at 40 and controlled by a weight-loaded rotary slide valve 35 actuated by a float 25 responsive to the level in the mixing vessel. The float is' connected to a counter-balanced lever 26 which tilts, through a spring 33, a plate 29 for actuating the valve. The strength of a component liquid in the mixture is adjusted by valves 17, 22b or by changing the nozzle, the rate of flow through pipe 12 being indicated by a gauge 18. The nozzles may also be moved manually either directly or through a manually actuated valve by-passing valve 35.
Patent GB-148384-A (GB)
Title: Improvements in two-part jaws for chucks
IPC: B23B31/16
Filed: 1920-07-09
Abstract: 148,384. Friedmann, D. T. Dec. 15, 1917, [Convention date]. Void [Published under Sect. 91 of the Act]. Chucks.-A two-part jaw for a chuck comprises a base portion 1, adapted to be adjusted radially in the chuck body and having a dovetail projection 3 which engages a corresponding recess in the work-holding portion 2 pivoted on a pin 4. To resist any tendency-due to wear-for the work to turn on an axis at right-angles to the pivot, the base 1 has circular projections 14 of any suitable cross-section engaging corresponding slots in the work-holding member and having two diametrically opposed recesses 6 adapted to engage the spring-pressed pin 7 so that the jaw may be quickly turned from one working position to the other. For eccentric chucking of the work the jaws may be turned so that their full gripping surfaces are: always operative. In a modification, the dovetail projection is replaced by a ring- shaped projection of rectangular cross-section. In a further modification, the circular projections 14 are dispensed with and the spring-pressed pin 7 engages recesses on the base portion.
Patent GB-1143196-A (GB)
Title: Plenum chamber cushion system for ground effect machines
Inventor: FAURE MARC HENRI JEAN
IPC: B60V1/06
Filed: 1966-05-09
Abstract: 1,143,196. Air cushion vehicles. BERTIN & CIE. 9 May, 1966 [7 May, 1965], No. 20372/66. Heading B7K. An air cushion vehicle comprises a body structure 1 supported by a cushion 2 supplied by fan 3 and contained by a flexible skirt 8 which is curved outwardly and downwardly to form a daylight clearance which is maintained by balancing the outward loading of the cushion by the natural resilience of the material, oscillations being prevented by dampers 11. In a further embodiment the damping is provided by inserting filaments or lamellae in the skirt material which damp by internal friction. A wear-resisting edge may be formed on the lower edge of the skirt.
Patent GB-791693-A (GB)
Title: Improvements in or relating to mowing machines particularly mower binders
IPC: A01D37/00
Filed: 1955-07-14
Abstract: 791,693. Reaping machines. LANZ AKT.- GES., H. July 14, 1955 [July 14, 1954], No. 20412/55. Class 6(3). A mower-binder is provided with a main gearbox 13 from which the drive to the various moving parts is derived, the input to the gearbox being from one of three independent sources, viz., a motor 15 on the machine, the power takeoff 14 of the towing tractor, or the ground-wheel 1 of the machine. The tractor power take-off is coupled to a shaft 16 journalled in the gearbox 13 and meshing, through gears 36, 37 with shafts 35, 38 from which, respectively, drives are taken to the cutter-bar and platformcanvas 3. The motor 15 is connected, through a gearbox 25, chain-drive 22 and clutch 24, to a shaft 19 which is keyed to the end of the shaft 16. The land-wheel 1 is coupled, by a chaindrive 28 and clutch 32, to a shaft 30 which is geared by bevel-wheels 33, 34 to the shaft 35 and thence by gears 36, 37 to the shaft 38. The drive from the shaft 38 continues as a chaindrive 46 to a countershaft 49 and thence, through the elevator-roller shaft 54, to the platform-roller 5 and the rotary divider 6.
Patent GB-149947-A (GB)
Title: Improvements in or relating to ignition means for combustion engines
IPC: F02P19/04
Filed: 1920-07-10
Abstract: 149,947. Pickee, D. J. Aug. 16, 1919, [Convention date]. Void [Published under Sect. 91 of the Act]. Incandescent igniters.-For permitting variation of the time of ignition, the head c is mounted adjustably by means of a threaded sleeve g which forms part of a piston sliding within the casing a. An electric resistance c<2> acting as a heating coil is connected at one end to the casing and at the other by way of a central bolt d to the terminal h.
Patent GB-615494-A (GB)
Title: Bag or container
IPC: B65D30/20
Filed: 1946-07-09
Abstract: 615,494. Paper bags. DOUWE EGBERTS TABAKSFABRIEK - KOFFIEBRANDERIJEN - THEEHANDEL C. V. July 9, 1946, No. 20540. Convention date, July 30, 1945. [Class 94 (ii)] A bag which is shaped as a parallelepiped and has a mouth which will open, has at least two of its adjacent walls connected by foldable sections 7 wider at the top than at the bottom so that the transverse section of the bag may be increased from the base upwardly when the mouth is open.
Patent GB-1304914-A (GB)
IPC: E06B3/80
Filed: 1970-04-29
Abstract: 1304914 Closure devices for door openings K ALTEN 29 April 1970 [30 April 1969 23 May 1969] 20584/70 Heading E1J A closure device for a door opening 1 or for closing the gap formed between the opening boundary and an article such as a vehicle 3 located in front of the opening or within the opening, comprises a plurality of parallel resilient or flexible strips 9 of rubber or rubber-like material rectangular in outline and secured around the opening at one of their shorter sides and have such a length as to close the said gap. For closing the opening, the strips are secured to the side only of the opening and correspond in length to the size of the opening. The strips are preferably arranged in two parallel planes so that the space between two adjacent strips in one plane is overlapped by a strip in the other plane. As shown a support frame 4 of inverted U-section is secured around the door opening and extends beyond the lower edge of the opening and the cross-section of the free edges of the web and lug of the U are of channel form 15 as shown in Fig. 3. The strips 5 are retained in the channel 15 by metal sections 20 which are of a length slightly greater than the width of the strips which are held by their end portions in a claw 21, the two sections shown, being placed one on the other and fill, the groove 15 but allow longitudinal displacement. The claws 21 are inclined to the web of the channel 15, the sections 20 being staggered longitudinally of the groove 15 so that the adjacent strips 5 in the two planes are supported against each other with their natural resiliency created by layers 52 of steel wires 51 sandwiching a textile fabric 50 enclosed in the rubber-like material.
Patent GB-148779-A (GB)
Title: Improvements in and relating to the recovery of nitrogen compounds from coal, peat, bituminous shale or the like
IPC: C01C1/16
Filed: 1920-07-10
Abstract: 148,779. Riedel, A. Nov. 8, 1915, [Convention date]. Void [Published under Sect. 91 of the Act]. Producers.-In working a by-product producergas plant, the combined nitrogen in coal, peat, and bituminous shale is converted into ammonium chloride, which is extracted by washing the gases with water.
Patent GB-755844-A (GB)
Title: Recovery of phosgene
IPC: C01B32/80
Filed: 1953-07-24
Abstract: Chloroformates are prepared by reacting a hydroxy compound, e.g. mono- or polyhydric alcohols or phenols, with phosgene, the unreacted phosgene being recovered and recirculated.  Specified hydroxy compounds are ethyl or butyl alcohols, ethylene, diethylene, tri- and tetra-methylene glycols, glycerol, mannitol, phenol and resorcinol. The examples refer to the production of butanediol-bis-chloroformate by reaction of phosgene and butanediol-1:4 in molar ratio 3:1 in a vessel fitted with a condenser brine-cooled to -18 DEG C.ALSO:Phosgene is recovered by treating a gaseous mixture containing phosgene and hydrogen chloride with a specified preferential solvent for phosgene to obtain a solution containing phosgene. The treatment should be at below 0 DEG C. between the boiling point of phosgene and that of hydrogen chloride, e.g. -10 to -40 DEG C., and the amount of solvent should be such as to recover at least 90 per cent phosgene. The phosgene and any hydrogen chloride present is vaporized from the solution by distillation and the phosgene is separated by fractional condensation.  Specified solvents are monochlorobenzene, a liquid chlorinated lower molecular weight paraffin hydrocarbon, e.g. dichloroethane chloroform and carbon tetrachloride, a liquid aromatic hydrocarbon, e.g. xylene and benzene, a lower molecular weight paraffin hydrocarbon liquid fatty acids, e.g. acetic, and liquid fatty acid esters, e.g. ethyl acetate.  Lower molecular weight paraffin hydrocarbons denote hydrocarbons containing up to 10 carbon atoms in the molecule. Phosgene may be recovered by this process from the gas mixture of phosgene and hydrogen chloride resulting from the production of chloroformates by reacting a hydroxy compound, e.g. mono- or polyhydric alcohols or phenols, with phosgene, and the phosgene recirculated.
Patent GB-1526457-A (GB)
Title: Vehicle weighbridge
IPC: G01G19/02
Filed: 1977-05-17
Abstract: 1526457 Weighbridges STRAINSTALL Ltd 17 May 1977 [20 May 1976] 20789/76 Headings G1N and G1W A weighbridge for measuring the axle load of a road vehicle comprises a platform 1, 2 supported through at least one member 5 arranged on axis X, this member being subjected to torsional stress as the vehicle wheels roll on and off the platform in direction A or B. A part subject to other mechanical stress (conveniently direct shear stress on member 5) is monitored by strain-gauges to give an indication of axle load, preferably when the torsional stress passes through zero. The member 5 may comprise a cylindrical tube Figs. 2, 3 (not shown) or an I-section beam 6, Fig. 6, in which strain gauges E 1 , F 1  and corresponding gauges on the lower flange sense the torsional strains and gauges A 1 , B 1  on the web sense the shear strains to give a measure of the axle load.
Patent GB-609807-A (GB)
Title: Improvements in or relating to the preparation of complex metal ammine salts
IPC: C01G1/00
Filed: 1943-12-13
Abstract: Complex cation metal ammine salts are produced by mixing and agitating together a solid salt of an ammine-forming metal, having an anion derived from an acid stronger than carbonic acid, and a solid ammine-forming salt or urea which has an anion weaker than the anion of said metal salt.  Ammonium carbonate, bicarbonate, carbamate or amine salts, e.g. guanidine carbonate or acetate or ethylene diamine thiocyanate may be used.  Examples describe the reaction of ammonium carbonate with copper sulphate, fluoride, phosphate or arsenate; urea with copper sulphate; and ammonium or guanidine carbonate with cobaltous chloride which is oxidized during reaction by air or other oxidizing agent.  Salts of chromium, mercury, gold, platinum, cobalt, nickel, silver, zinc or cadmium may also be used.  The reactants may be agitated and heated under reduced pressure until the pressure becomes constant. A wetting agent, e.g. a sulphonated dicarboxylic acid ester may be added.  A cuprammonium sulphate mixed with ten parts of diammonium phosphate and some Aerosol MA wetting agent is useful for fire-proofing and preserving wood or fabric. Specification 456,058 is referred to.ALSO:Complex cation metal amine salts are produced by mixing and agitating together a solid salt of an amine-forming metal, having an anion derived from an acid stronger than carbonic acid, and a solid amine-forming salt or urea which has an anion weaker than the anion of said metal salt.  Ammonium carbonate, bicarbonate, carbamate or amine salts, e.g. guanidine carbonate or acetate or ethylene diamine thiocyanate may be used. Examples describe the reaction of ammonium carbonate with copper sulphate, fluoride, phosphate or arsenate; urea with copper sulphate; and ammonium or guanidine carbonate with cobaltono chloride which is oxidized during reaction by air or other oxidizing agent.  Salts of chromium, mercury, gold, platinum, cobalt, nickel, silver, zinc or cadmium may also be used.  The reactants may be agitated and heated under reduced pressure until the pressure becomes constant. A wetting agent, e.g. a sulphonated dicarboxylic acid ester may be added.  A cuprammonium sulphate mixed with ten parts of diammonium phosphate and some Alrosal M.A. wetting agent is useful for fire-retarding, fire-proofing and preserving wood or fabric. Specification 456,058, [Group III], is referred to.
Patent GB-1024319-A (GB)
Title: New process for electrical heating of concrete products for reducing external cracking
IPC: C04B40/02
Filed: 1964-05-20
Abstract: Surface fissuring in concrete elements is reduced by passing current through metal conductors which are either insulated copper conductors 0.5 to 1.5 mm. diameter in which case the current density is at least 40 amps/sq. mm.; or bare ferrous reinforcements 3 to 6 mm. diameter in which the current density is at least 3 amps/sq. mm., but not of a density high enough to raise the temperature of the conductors to the boiling point of the water in the concrete.  Formulae are given for calculating the required density.
Patent GB-1336480-A (GB)
Title: Methods of manufacturing a semiconductor device
IPC: H01L21/762
Filed: 1971-04-19
Abstract: 1336480 Semi-conductor devices PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 19 April 1971 [5 Feb 1970] 20877/71 Heading H1K A semi-conductor device is fabricated from a low ohmic silicon substrate disc with 100 planer surface doped with A s  to n conductivity and formed with high ohmic layer 3 of p conductivity silicon with recesses therein. A further layer 2 of N conductivity Si is deposited therein by thermal epitaxial decomposition of silane containing pH or by epitaxial deposition followed by vapour deposited polycrystal. The substrate is selectively etched electrochemically down to the interface of the p-conductivity layer, which is further etched by HF + HNO 3  + CH 3 COOH to a plane intersecting the recess to leave a body (Fig. 3) comprising n-type layer 6 with p-type inserts 39. A complementary MOS transistor structure (Fig. 4) comprises p-type source regions 31, 35; p-type drain regions 32, 36; n-type source and drain regions in p-type insert 39; insulant oxide layers 37 and gate insulant oxide layers 38, 40, 42 overlain by gate electrodes 44, 41, 43. In a modification (Fig. 6, not shown) an n-type impurity is diffused after recessing and before epitaxial deposition of ptype layer. After removal of substrate and part of the high ohmic layer, a p-type base insert is separated from a p-type layer by a n-type diffused collector zone and a n + emitter region is diffused into the insert. In a modification, a low ohmic n+ substrate is formed with a recessed high ohmie n-type layer 72, with an oxide layer on its elevated surface, and p-type silicon is deposited epitaxially in the recesses and as polycrystal on the oxide layer, (Figs. 7, 8, not shown), and the substrate and a portion of the high ohmic layer are etched off to leave a structure (Fig. 9) wherein n-type and p-type source and drain regions 91, 92; 93, 94 are diffused into monocrystalline p + type layer 81.
Patent GB-423432-A (GB)
Title: Improvements in or relating to plant for producing and treating ammonium sulphate
IPC: C01C1/242
Filed: 1933-07-25
Abstract: A plant for producing and treating ammonium sulphate comprises a saturator in which crystalline ammonium sulphate is produced and a bucket type elevator for raising the ammonium sulphate above the liquid level in the saturator, the casing containing the elevator being connected in a liquid tight manner externally to the bottom of the saturator.  As shown, a saturator a is provided with a discharge shoot e which is constructed integrally with the casing of an elevator d so as to provide a liquid-tight joint. The elevator d is provided with perforated or wire buckets f which collect <PICT:0423432/III/1> the ammonium sulphate, elevate it above the liquid level and discharge it via an outlet g on to a conveyer-drier b of the kind described in Specifications 235,613 and 297,630, [both in Class 1 (ii)].  The partly dried material is finally dried in the drier c. The ammonium sulphate may be chemically treated with liquids or gases, e.g. gaseous or liquid ammonia, in the space in the elevator casing above the level of the liquid.  Steam, with or without lubricating oil, or other fluid under pressure may be supplied to the bearings of the axles carrying the elevator sprocket wheels, particularly the bearings immersed in the liquid.
Patent GB-377424-A (GB)
Title: Improvements in and relating to systems of electric motor control
IPC: H02P3/12
Filed: 1931-07-22
Abstract: 377,424. Control of D.C. motors. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Soc. Generale de Constructions Electriques et Mecaniques Alsthom ; 146, Avenue des Champs Elysees, Paris.) July 22, 1931, No. 20947. Convention date, July 24, 1930. [Class 38 (iii).] Regenerative and non- regenerative braking.- When a controller is moved in one direction series resistances are connected between the supply line and the armature of a shunt or compound wound motor, and progressively cut out and when it is moved in the opposite direction the same resistances are connected across the armature, and again progressively cut out, the arrangement being such that resistance starting and shunt speed regulating notches in the forward direction of the controller become rheostatic braking and regenerative braking positions respectively in the backward direction. When the controller of a hoist or traction motor 1 is moved forward, a switch 12 is closed, energizing a coil 10 which closes a switch 9, and opens a switch 17. Further forward movement connects points 6, 18, cuts out resistances 6-7, 7-8 in turn, and then gradually inserts resistance 13 in the shunt field circuit. Upon backward movement the switch 12 is first opened, but the coil 10 is maintained by a switch 11 closed in all positions of shunt field regulation, and resistance 13 is gradually removed to give regenerative braking. After the resistance 13 has been fully cut out, the switch 11 opens, the coil 10 is de-energized, the switch 9 opens, and the switch 17 closes, so that a switch 16, being closed for all " on " positions, a coil is energized for the remainder of the backward movement, to close a switch 14 and connect the resistances 8-7, 7-6, which are cut out in two steps, across the armature. Additional resistances 19, 20 may be provided, as shown in Fig. 8, which are placed in circuit only during rheostatic braking. Specification 356,104 is referred to.
Patent GB-640639-A (GB)
Title: Improvements in or relating to ball and roller bearings
IPC: F16C19/52
Filed: 1946-07-12
Abstract: 640,639. Ball and roller bearings. RIVOFFICINE DI VILLAR PEROSA SOC. PER AZIONI. July 12, 1946, No. 20960. Convention date, June 20, 1939. [Class 12 (i)] Ball or roller bearings to be mounted in housings of non-ferrous material, e.g. of aluminium alloy, the thermal expansion of which is higher, have the bearing encircled by an outer ring 3 of a material having an expansion equivalent to such non-ferrous material into which ring 3 the bearing 1 is forced cold to give an interference fit sufficient to counterbalance the thermal expansion. The re-inforcing ring and bearing is ground or otherwise finished as a single unit to the required final dimensions. The ring is shaped so as to be secured against movement on the bearing, e.g. by moulding to the bevel or curved edges 4 of the outer race member, or it may have a flange 8, Fig. 7, at one side and a screw-in flange ring 9 at the other side. The Specification as open to inspection under Sect. 91 comprises also a ball or roller bearing with the outer race encircled by a re-inforcing ring, the outer race and the ring being made of sintered powder materials and welded together. This subject-matter does not appear in the Specification as accepted.
Patent GB-1345117-A (GB)
Title: Method for crystallizing diamine dicarboxylate
IPC: C07C211/12
Filed: 1972-05-05
Abstract: 1345117 Crystallizing diamine dicarboxylates ASAHI KASEI KOGYO KK 5 May 1972 [8 May 1971] 21076/72 Heading C2C A crystalline diamine dicarboxylate derived from a diamine R<SP>1</SP>(NH 2 ) 2 , where R<SP>1</SP> is pheny. lene, cyclohexylene or C 4-12  alkylene, and a dicarboxylic acid R(COOH) 2 , where R is phenylene, cyclohexylene or C 2-8  alkylene, is precipitated from an aqueous liquid containing the salt and the acid by adding a sufficient amount of the diamine to maintain the pH of the aqueous liquid at 5-10, at a temperature of 20-100‹ C. The liquid may also contain the salt and acid in suspension, the suspended acid dissolving to form salt.