baber/WOPTO huggingface dataset:
Patent GB-1029218-A (GB)
Title: Process for producing 19-norsteroids and intermediates therefor
Inventor: ERCOLI ALBERTO
IPC: C07J1/00
Filed: 1963-05-10
Abstract: The invention comprises compounds of formula <FORM:1029218/C2/1> wherein the C5-C6 bond may be unsaturated, Y11 is a b -hydroxymethylene group or a group <FORM:1029218/C2/2> or <FORM:1029218/C2/3> R is hydrogen or an alkyl radical having 1 to 3 carbon atoms and n is 1 or 2, their preparation by (a) ketalization or (b) hydrogenation of a 5(6) double bond, and a process for preparing 19-nor-steroids of formulae <FORM:1029218/C2/4> and <FORM:1029218/C2/5> wherein X is a b -hydroxymethylene, b [1-(b hydroxy)-ethyl] methylene or b -(1,5-dimethylhexyl) methylene group, or a group <FORM:1029218/C2/6> Y is a b -hydroxymethylene or b (1,5-dimethylhexyl) methylene group or a group <FORM:1029218/C2/7> or <FORM:1029218/C2/8> the C5-C6 and C5-C10 bonds may be unsaturated, R is hydrogen or an alkyl radical of 1 to 3 carbon atoms and n is 1 or 2, by reaction of a 10-cyano-steroid of formula <FORM:1029218/C2/9> or <FORM:1029218/C2/100> wherein R1 is a hydrogen atom or an acyl group having 1 to 9 carbon atoms, and X1 and Y1 are one of X and Y, respectively, but converted to a 17- or 20-ester thereof with a carboxylic acid having 1 to 9 carbon atoms where appropriate, with an alkali metal or alkali metal amide in the presence of an alcohol, followed, if desired, by conversion to a compound of formula <FORM:1029218/C2/111> wherein Y1 is a b -hydroxymethylene, carbonyl, b -acetyl-methylene or b -(1,5-dimethylhexyl)methylene group, by (a) hydrolysis of a ketal by a mineral acid, (b) oxidation of hydroxygroups to keto-groups, or (c) rearrangement of a 5(6) or 5(10) double bond to a 4(5) double bond by treatment with a strong acid or a strong base; double bonds may, if desired, be protected by bromination.  10-Cyano starting materials as defined above are prepared (a) as described for the compounds of the invention, (b) treatment of a 19-oximino6b -hydroxy-steroi or its nitroso-dimer with phosphorus oxychloride, or (c) oxidation of hydroxy-groups to keto groups.  19 - Oximino - 5a  - androstane - 3b ,6b ,17b  - triol - 3,17 - diacylates, 19 - oximino - 5a  - pregnane - 3b ,6b ,20b  - triol - 3b ,20b  - diacylates, and their corresponding nitroso-dimers are prepared by acylation of the appropriate 3,17- or 3,20diol-6-one, reduction of the 6-keto group to a 6b -hydroxy group with sodium borohydride, converting this to the 6-nitrite by reaction with nitrosyl chloride, and subjecting this nitrite to photolysis.
Patent GB-1084375-A (GB)
Title: Method of making tetrabromophthalic acid anhydride
IPC: C07C51/363
Filed: 1966-04-28
Abstract: Tetrabromophthalic anhydride (I) is made by catalytically reacting Br2 with phthalic anhydride (II) in oleum at elevated temperature, the molar ratio Br2; (II) SO3 being 2.01-2.1:1: 4.4-4.8; at least 80% of the Br2 is added to the reaction mixture at 80-90 DEG  C. and the balance at 100-110 DEG  C., and after addition of Br2 is complete, excess SO3 and Br2 are distilled off from the mixture at 120-150 DEG C., followed by separation of the crystallized (I).
Patent GB-767744-A (GB)
Title: Improvements in or relating to the bleaching of proteinaceous fibrous materials
Inventor: GRAHAM DAVID ROBERTSON
IPC: D06L4/30
Filed: 1954-06-25
Abstract: Protein fibres are treated with a sulphur-containing reducing agent in a proportion from 1 to 40 per cent by weight of the material treated and at a pH from 2 to 7 and a temperature from 0 DEG  to 100 DEG C., and also with an optical bleaching agent before, during or after the treatment with the reducing agent.  The reducing agent may be sodium bisulphite, sodium hydrosulphite, sulphur dioxide or sodium formaldehyde sulphoxylate, and may be converted into a colourless, sparingly soluble salt under such conditions that the salt is precipitated on the fibres and adheres thereto, e.g. sodium bisulphite may be converted into the calcium salt by treatment with calcium chloride.  The optical bleaching agent may be an amino stilbene, 4 - methyl - 7 - dimethyl - amino - coumarin, 4 - methyl - 7 - ethyl - amino-coumarin or b  - methylumbelliferone.  In examples, wool is bleached with hydrogen peroxide and is then treated with a solution containing formic acid, diamino - stilbene - disulphonic acid and (1) sodium bisulphite, (2) sodium hydrosulphite or (3) sodium formaldehyde sulphoxylate.  In Example (4) the wool, after bleaching with hydrogen peroxide, is treated with a solution containing sodium bisulphite, calcium chloride, b  - methylumbelliferone and ammonia.
Patent GB-596164-A (GB)
Title: Methods of utilising effluents from the chemical treatment of cellulosic raw material
IPC: D21C11/04
Filed: 1945-07-23
Abstract: An improvement in the process for the production of pulp from raw cellulosic vegetable material according to the parent Specification, comprises the causticization of the alkaline effluent with lime, the causticized effluent being used for digestion of the acid pre-treated material without the addition of fresh caustic alkali.  In an example, straw is pre-treated in a continuous way with boiling sodium bisulphate of 1 1/2 per cent concentration in a ratio of 1 to 8.  It is then washed.  A dilute black liquor containing 4.0 grams per litre sodium hydroxide and 4.3 g./litre sodium carbonate is treated with a 10 per cent excess of lime and filtered.  The filtrate, containing 6.9 g./litre sodium hydroxide, is used for the digestion of the washed pre-treated straw.
Patent GB-571310-A (GB)
Title: Improvements in the manufacture of glass containers
IPC: C03B23/09
Filed: 1943-11-13
Abstract: 571,310. Making glass ampoules. SHAW, G. S. Nov. 13, 1943, No. 18928. [Class 56] Relates to a machine for making glass containers or ampoules of the type in which a number of pairs of chucks adapted to grip the ends of short lengths of tube are rotated about their own axis and displaced relatively to heating means, the chucks being automatically moved apart when the tube is sufficiently heated to draw down the central position, and the chuck jaws being then moved to release the tubes. According to the invention, the movement of the chuck jaws is one of partial rotation about an axis parallel to that of the tube held by them. 'In the machine shown, each tube is held in a pair of chucks formed by jaws 3, 4 and 5, 6, the upper end extending between a further pair of jaws 24 which, however, do not grip it. The jaws are all mounted on a pair of rods 29, 30 secured at their lower end to a base 7, and at their upper ends slidably engaged in a yoke 8. The jaws 5, 6 are slidably mounted on the rod 29, 30 and are connected to the yoke 8 by rods 23 which pass through arcuate slots in the latter and through guides in the jaws 24. The base 7 is formed with a taper socket to engage over a taper spindle 15 mounted in a rotating table. As the glass tube held in the chucks is carried past a gas burner 18 the spindle is rotated by the engagement of a friction wheel 16 with a track 17, so rotating the chucks and tube. At the end of the heating period the tube is drawn out by raising the jaws 5, 6, this movement being produced by cam tracks 12, 13 engaged by a roller 11 on a hanger 10 pivotally attached to the yoke 8. Further rotation of the table causes trip cams 26 to engage stops (not shown) on the jaws 3, 4 and 24 causing them to turn on the spindles 29, 30 against the action of torsion springs. The jaws 5, 6 turn with the jaws 24, the tube being ejected laterally.
Patent GB-1505010-A (GB)
Title: Abrasion- and foggingresistant optical element
IPC: C08J7/054
Filed: 1976-05-07
Abstract: 1505010 Coated optical elements AMERICAN OPTICAL CORP 7 May 1976 [19 May 1975] 18954/76 Heading B2E [Also in Division G2] A optical element is formed of an organic or inorganic material and has on at least one surface a transparent coating of polyvinyl alcohol which has been cross-linked with a combination of zirconium nitrate and formaldehyde to form an abrasion- and fogging- resistant coating. Preferably the surface has a pre-treatment which may be a hydrolytic surface treatment such as contact with an aqueous solution of a caustic alkali such as sodium hydroxide. The optical element may be of glass, plastics or metal. Preferably the plastics is a polycarbonate such as poly(allyl diglycol carbonate) and poly-(4, 4'-dioxydiphenyl-2, 2'-propane carbonate) suitable optical elements are windows, spectacles, goggles, face shields, binoculars and optical instruments.
Patent GB-703477-A (GB)
Title: Quaternary ammonium compounds
Inventor: GOLDBERG ALAN AUGUST
Filed: 1950-07-28
Abstract: The invention comprises quaternary ammonium compounds derived from para-tertiaryoctylphenoxyalkylamines by quaternating with an alkylating or aralkylating agent.  The alkylene group may contain from 2-4 carbon atoms.  Examples of the products b -paratertiaryoctyl-phenoxy-ethyl-diethyl - methyl - ammonium para - toluene sulphonate, -triethyl ammonium bromide, and -diethyl benzyl ammonium bromide and chloride are given, obtained by the action of the corresponding quaternating agents on b -para-tertiaryoctylphenoxyethyl-diethylamine.  Specification 493,865 is referred to.
Patent GB-1391021-A (GB)
Title: Photographic apparatus
IPC: G03D9/02
Filed: 1973-04-19
Abstract: 1391021 Self-processing film apparatus POLAROID CORP 19 April 1973 [24 April 1972] 19006/73 Headings G2A and G2X A container for film units which are sequentially exposed and treated with a processing liquid has means for influencing the flow of the liquid so as to obtain a more uniform distribution. Fig. 1, shows a film container 12 of known type housing a plurality of self-developing film units, which are exposed one by one through an aperture 26 and then withdrawn through a slot 40, from where they pass between a pair of rollers (72, 74), Fig. 3 (not shown). These rupture a pod of processing liquid which is then squeezed between the two sheets of the film unit. The liquid tends to advance in the form of a bow-shaped wave, as shown in Fig. 5, which can result in uneven distribution of the liquid, and hence uneven development. To counteract this tendency, the forward wall 22 of the container 12 has a number of projections 78a, 78b, 78c moulded integrally therewith, tapering towards the rear. These exert an additional pressure on the liquid which has a retarding effect on the flow in the centre of the wave front, so that its shape is more as shown in Fig. 6. A similar effect may be obtained by forming recesses at the sides of wall 22 (e.g. 80), Fig. 7 (not shown) or (300), Fig. 9 (not shown). The container is intended for use in a folding single lens reflex camera, Fig. 4 (not shown). Since the walls of container 12 are normally formed of a thin plastics material, they are likely to be flexible, and therefore the position of the projections 78a, 78b, 78c may vary. In order to prevent this, the parts of the camera which surround and engage the container are such as to hold it firmly and prevent such flexing.
Patent GB-812021-A (GB)
Title: Improvements in the removal of liquids from drums or other containers
IPC: B67D7/00
Filed: 1956-06-20
Abstract: 812,021. Syphons. SMIRLES, V. W. June 19, 1957 [June 20, 1956], No. 19028/56. Class 69(1). In a syphon liquid dispensing device a length of tubing B is inserted into a container A hrough the top thereof the tubing being provided, with a bulbous portion C adjacent its free end for starting the syphon and a tap in the form of a delivery valve D whereby the contents may be syphoned from the container without any possibility of leakage from the valve when not in use. A delivery tube D<SP>4</SP> housing a spring- loaded ball valve d<SP>10</SP> is connected to the tubing B. A cranked wire D<SP>3</SP> is housed transversely of the tube D<SP>4</SP> for raising the ball d<SP>10</SP> off a seating d<SP>0</SP> formed by an internal shoulder in the delivery tube. A depression d<SP>8</SP> is formed in the tube D<SP>4</SP> to retain the wire D<SP>3</SP> in position with the ball raised. In order to start the syphon the ball C is squeezed with the ball valve d<SP>10</SP> closed on the seat d<SP>9</SP> to expel air from the piping B. When the cranked wire D<SP>3</SP> is rotated liquid will flow through the delivery tube D<SP>4</SP> when the latter is below the level of liquid in the drum A. A clip a<SP>1</SP> is provided on the top of the drum A for holding the end of the piping B when not in use and as the delivery valve D will therefore be above the level of liquid in the drum no dripping will occur whether the delivery valve D is open or closed.
Patent GB-732059-A (GB)
Title: Process for the production of thermoset polyamides
IPC: C08G69/26
Filed: 1952-07-28
Abstract: Thermoset polyamides are prepared by condensing salts of dicarboxylic acids and N-alkylol polyamines.  Other polyamide forming reactants may be present or the condensation may be carried out in the presence of polyamides.  The products vary from hard, tough products to sticky elastic products depending upon the quantity of N-alkylol polyamine salt employed relative to other polyamide-forming materials or already formed polyamide. Reactants specified are N-ethylol decamethylene-diamine, N,N1 - bis - (ethylol) - tetramethylene-diamine, N,N1 - bis - (ethylol) - hexamethylene-diamine, N - propylol hexamethylene diamine and N,N1 - bis - (propylol) - hexamethylene-diamine, glutaric, adipic, methyladipic, pimelic and sebacic acids, tetra- and hexamethylene diamine, diamino-propylether, aminocaproic acid, aminoundecylic acid, caprolactam and oenantholactam.  In examples: (1) N,N1-bis-(ethylol)-hexamethylene diamonium adipate is heated for 3 hours in nitrogen at 200 DEG  C. to give a colourless rubbery body; (2) 100 parts of caprolactam and 30 parts of N,N1-bis-(ethylol)-hexamethylene diammonium adipate are heated in nitrogen for four hours at 260 DEG  C. to give a colourless hard rubber-like body; (3) 30 parts of N,N1-bis-(ethylol)-hexamethylene diammonium adipate are added to a polyamide melt from 60 parts hexamethylene diammonium adipate and 40 parts caprolactam to give a viscous melt after 15 minutes which can be cast to yield, after cooling, bodies of high impart strength; (4) 5 parts of a salt from adipic acid and a mixture of hexamethylene diamine and N-oxyethylated hexamethylene diamine are added to a polyamide melt from caprolactam giving after 15 minutes a viscous mass yielding bodies of high impact strength; (5) 5 parts of N,N1-bis-(propylol)-hexamethylene diammonium adipate are added to a melt of polyhexamethyleneadipamide giving a viscous product which coagulates to a tough insoluble polymer. Specification 724,236 is referred to.ALSO:N-alkylol polyamines are produced by reacting polyamines with alkylene oxides or chlorohydrins.  Salts may be formed from the products by neutralizing with dicarboxylic acids.  The salts may be polymerized by heating (see Group IV (a)).  In an example, 44 parts of ethylene oxide are introduced with agitation into 150 parts by weight hexamethylene diamine, and the product neutralized with adipic acid. N-(ethylol)-decamethylene diamine, N,N1 - bis - (ethylol) - hexamethylene and tetramethylene diamines, N-(propylol)-hexamethylene diamine and N,N1-bis-(propylol)-hexamethylene diamine are also referred to and their salts with glutaric, adipic, pimelic and sebacic acids.
Patent GB-952933-A (GB)
Title: Improvements in or relating to protective helmets
IPC: A42B3/10
Filed: 1961-07-26
Abstract: 952,933. Protective helmets. HELMETS Ltd., and L. R. NOBLETT. Oct. 24, 1962 [July 26, 1961], No. 19104/61. Heading A3V. A protective helmet designed to prevent flow of air into the shell when the wearer is subjected to a high speed air blast comprises a rigid (e.g. glass fibre) one-piece shell (Fig. 1) having interior shock absorbing means in the form of cork lining elements 2 and a head-engaging nylon strap harness 3, and having adhesively secured to the periphery of the shell a flexible band 5 (e.g. leather) about one inch wide, provided with a hem by stitching 6 and notched at frequent intervals to form a series of spaced loops 8 which form complementary attachment means for the sealing member. The sealing member comprises a flexible band 9 having three sections 11, 12 and 13 which are sewn together to conform with the shape of the periphery of the helmet. Band 9 on its outer edge has uniformly spaced U-shaped notches and the parts of the band between the notches are folded inwardly and secured by stitching 15, thus forming loops 16 (about half the number provided on band 5). Band 9 is interlocked with band 5 (Fig. 3) and a nylon lacing cord 17 is passed through the aligned loops, the ends of the cord being secured at the rear of the helmet. Where the helmet periphery undergoes a sharp bend two or more successive loops 8 are left unthreaded. The helmet may have lining elements attached to the inner edge of the sealing means and sliding clasp fasteners or moulded interlocking means may be used to mount the sealing band on the helmet.
Patent GB-237632-A (GB)
Title: Improvements in or relating to dental spittoons
IPC: A61C17/14
Filed: 1924-09-09
Abstract: 237,632. Pieper, A. F. Sept. 20, 1923, [Convention date]. Drawings to Specification. Spittoons.-The bowl is flushed by the lateral overflow from an inclined peripheral channel which receives the flushing water at its upper end. Specification 222,114 is referred to.
Patent GB-630751-A (GB)
Title: A process for the manufacture of folic acid
IPC: C07D475/04
Filed: 1947-07-18
Abstract: Folic acid of the formula <FORM:0630751/IV (b)/1> is prepared by catalytically hydrogenating in an inert solvent or formic acid p-nitrobenzoyl-l(+)-glutamic acid in the presence of 2-amino-6-hydroxy-8-(hydroxymethyl)-pteridine.  In an example, palladium charcoal is used as the hydrogenation catalyst and formic acid as the solvent.  When formic acid is used as the solvent, the reaction product is treated with ammonia to deformylate any formyl derivative formed.
Patent GB-1279923-A (GB)
Title: Apparatus for the selection of sections of text in an automatic typewriter
IPC: G11B15/00
Filed: 1970-04-22
Abstract: 1279923 Data storage and selection WALTER BUHMANN ELEKTRO-APPARATEBAU GmbH 22 April 1970 [23 April 1969] 19225/70 Headings G4C and G4M  The address of a section of a multi-track magnetic tape 11 containing part of a text to be printed by an automatic typewriter, is sensed from a record carrier and entered in registers 20-22 which control the positioning of a group of heads 17 across the tape, the selection of one head from the group, and, in co-operation with a tape feed step counter, the driving of the tape. The record carrier may be a sheet on which, for each tape section, a 3-digit number is manually marked in 3 groups of 10 marking positions, the carrier being driven by a toothed endless chain past an array of phototransistors. The lamps of the sensing arrangement and the chain drive being energized intermittently. The phototransistors may have an associated circuit for detecting multiple marking in one group of 10 positions which may indicate an incorrect manual entry or a deliberate entry to interrupt the operation so that additional text may be entered manually. The tape section address may also be entered manually on selector switches 30-32. The photodetector outputs converted to coded form are entered successively digit by digit into registers 20-22. Register 20, via code converters 24, 18 controls magnets 19 to position the five heads 17 over five of the 50 tracks across the tape 11. From register 21 the 10 outputs of code converter 25 select one of the five heads 17 and, depending on whether an even- or oddnumbered head is selected control a reversing switch 27 which determines which half of the tape is driven under the read heads 17. The tape 11 is driven until counter 14 coupled to the tape drive indicates that the section corresponding to the digit supplied by register 22 and code converter 28 is under the read heads.
Patent GB-656618-A (GB)
Title: Device for dressing and polishing stone and the like hard material
IPC: B24B7/22
Filed: 1948-07-17
Abstract: 656,618. Grinding and polishing stone. SONAPAR, SOC. DE PARTICIPATION SOC. ANON. July 17, 1948, No. 19237. Convention date, July 29, 1947. [Classes 60 and 124] A device for dressing and polishing stone comprises a rotary dressing tool and a rotary polishing tool mounted on a support, the tools being spaced apart so that, during relative movement between the stone and the device, dressing and polishing are carried out successively. As shown, the device comprises a support 1 having an arm 8 carrying a dressing roller 9 with abrasive parts 10 ... 12 arranged in a helix along the surface. The roller is driven by a chain or belt drive 5 from a driven shaft 4. Pivotally mounted on the shaft 4 are two arms 17 carrying a polishing roller 20 urged into contact with the stone by a spring 18 and driven from the roll 9 by a chain or belt drive 14. The device is mounted for to and fro motion over the surface of the stone.
Patent GB-214144-A (GB)
Title: Improvements relating to road vehicle and other lamps
IPC: F21V17/00
Filed: 1923-07-27
Abstract: 214,144. Lucas, Ltd., J., and Egginton, W. H. July 27, 1923. Lantern doors and door fittings.-In a vehicle lamp of the kind in which a detachable front or reflector or both are attached to the body bv a bayonet or equivalent fastening and locked by the outward pressure of spring means within the lamp, the spring means comprise a plurality of spiral springs g adapted to exert pressure at the peripheral portions of the front &c. Each of the springs g, which are arranged at intervals around the periphery of the lamp, is housed in a socket f provided on the body a and bears against a transverse peg k, a disc or washer i being inserted between the forward end of the spring and a rearwardly-turned flange c on the reflector b. The bayonet fastenings for the reflector comprise pins l on the flange c adapted to be passed through slots provided in the lip m on the body and engaged with the rear side of the lip. The bayonet fastenings for the front ring d comprise pins n on the body and slots provided in the inturned edge o of the ring d. The forward edge of the reflector bears against the glass e carried by the front ring so that the pressure of the springs serves to retain both sets of bayonet fastenings in engagement. According to the Provisional Specification, blade springs may be employed instead of spiral springs.
Patent GB-1169305-A (GB)
Title: Hydraulic Braking System for a Motor Vehicle
Inventor: ALMOR EMIL
IPC: B60T11/22
Filed: 1968-04-24
Abstract: 1,169,305. Hydraulic braking systems. FORD MOTOR CO. Ltd. 24 April, 1968, No. 19314/68. Headings F2E and F2F. In a hydraulic braking system for a motor vehicle, a transparent plastics reservoir 9 has threaded opening 11 into which an integral threaded projection 17 on one of a master cylinder 1 is screwed. The projection 17 has a bore (not shown) parallel to or aligned with the cylinder axis. A compressible sealing washer 13 and a locking washer 19 are provided. The locking washer may have tabs 21, 25 as shown co-operating with projections 23, 27 respectively. Instead of tab 21, the locking washer may have a flat (29) co-operating with a flat surface on the reservoir.
Patent GB-458601-A (GB)
Title: An improved shaving cream
IPC: C11D13/02
Filed: 1935-07-06
Abstract: A shaving cream is prepared by heating petrolatum and water, adding ammonia, stirring in molten stearic acid, and cooling. Small quantities of menthol and/or perfume, e.g. oil of lavender, may be added.