baber/WOPTO huggingface dataset:
Patent GB-1056211-A (GB)
Title: Improvements in and relating to cosmetic brushes
Inventor: AYLOTT ERIC VICTOR
IPC: A46B5/00
Filed: 1965-02-03
Abstract: 1,056,211. Cosmetic brushes. EYLURE Ltd. Nov. 30, 1965 [Feb. 3, 1965], No. 4660/65. Heading A4K. [Also in Division B4] A brush 9, for use in applying make-up to the eyes, folds into a channel-shaped handle 1 and is enclosed therein by a pivoted cover flap 2.
Patent GB-192930-A (GB)
Title: Improvements in side-delivery hay-rakes, swath-turners, and tedders
IPC: A01D78/00
Filed: 1922-02-17
Abstract: 192,930. Roberts, T. J. E., and May, H. Feb. 17, 1922. Haymaking.-The rear spider of a side-delivery hay-rake, swath-turner or tedder of the type described in Specification 12503/15, in which eccentric front and rear spiders carrying rake-bars are independently vertically adjustable, is arranged to be capable of angular movement in a longitudinal vertical plane in response to similar angular movements of the front spider when the height of the front srider is being adjusted. The height of the rear portion of the frame carrying the rear spider is adjusted by a hand-lever 20 pivoted on the main frame and working over a rack 22, this lever being connected through links and bell-cranks to the vertical stem 15 of the castor wheel 14. The rear spider 24 is carried on a dead-shaft 25 which also carries a forked cross-head 26, each limb of which is provided with a block 27<a>. The blocks 27a fit on trunnions 28 carried by a collar 29 which slides on a guide rod 30 extending between brackets 31, 32 nn the rear portion of the frame. Cushioning- springs 33, 34 are fitted at each side of the collar. To ensure the rear spider remaining parallel to the front spider a stay-bar 35 is rigidly connected at its ends to the shafts carrying the spiders. In a modification, the dead-shaft 25 is connected to the collar 30 through a ball-joint, and, in a further modification, the rear spider has a hub forming the socket for a ball projecting from the collar 30.
Patent GB-896511-A (GB)
Title: Improvements in and relating to the production of n-carboxy-alpha-amino-acid anhydrides
Inventor: BAGULEY MAURICE EDWARD
IPC: C08F20/34
Filed: 1959-02-11
Abstract: A cross-linked copolymer is prepared by heating a mixture of b -(formyl-N-methylamino)-ethyl acrylate and a 40% solution of divinylbenzene in ethyl styrene with azo-bisisobutyronitrile in a methyl ethyl ketone solvent.  Specification 854,140 is referred to.ALSO:Acid chloride derivatives are removed from N-carboxy-a -amino acid anhydrides (such as g  - methyl - L - glutamic - N - carboxy anhydride), obtained by reacting phosgene with an a -amino acid, by bringing a solution of said anhydride containing said chlorides into contact with a synthetic resin comprising a polymer or copolymer of an ester of acrylic or methacrylic acid containing an acyl-N-alkylamino group.  Suitable polymers are derived from b -(formyl-N-methylamino)-ethyl acrylate, b -(acetyl-N-methylamino)-ethyl acrylate and b -(formyl-N-methylamino)-ethyl methacrylate with or without the use of divinyl benzene or divinyl pyridine as crosslinking agents.  The polymers may be regenerated after use by treatment with, e.g. dimethyl formamide.  b  - (Formyl - N - methylamino) - ethylacrylate is prepared by refluxing b -(formyl-N-methylamino)-ethanol with glacial acrylic acid in presence of ferric chloride.  Specification 854,140 is referred to.
Patent GB-859813-A (GB)
Title: Improved valve for controlling fluid flow
IPC: B62D5/087
Filed: 1957-02-13
Abstract: 859,813. Power-assisted steering. NEW PRODUCTS CORPORATION. Feb. 13, 1957 [Feb. 13, 1956], No 4921/57. Class 79(5). [Also in Group XXIX] In a hydraulic power steering mechanism for motor vehicles, the wheels 10, 11 are connected by arms 12, 13 to a transversely reciprocable link 14 itself connected to a movable cylinder 16 having a piston 17 anchored to the chassis 19 of the vehicle. The steering wheel 21 is connected through worm drive 22 and knuckle 23 to the link 14 which is connected to a valve mechanism 20. The latter comprises a housing 46 having an axial bore 55 with an annular groove 51 connected to an inlet port and member movable in the bore and formed with a central land 50 carrying a resilient ring 73 adapted to co-operate with the sides of the groove 51 and also formed with further flanges 63, 64 constituting poppet valve members. The ring 73 is of elastomeric material and is held in tension in a groove 74 on the land. The bore 55 is formed with outlet ports 71, 72 leading to the opposite sides of a piston 17 and is enlarged at its ends to provide conical valve seats 67, 68 for the poppet valves 63, 64. The latter are formed on sleeves 48, 49 surrounding a spacer sleeve 41 and held between a flange 33 on a sleeve 31 and a sleeve 38. The parts 33, 38, 41, 48, 49 and a washer 39 are held in place on a pin 35 by a nut 40. The sleeve 31 is screwed into a sleeve 30 and axial movements of the latter are transmitted to the valve members by a transverse pin 37 engaging suitable slots. The housing 46 is formed with exhaust ducts 69, 70 leading from the outer sides of the poppet valves. The movable part of the valve is centralised by a spring 42 engaging washers 43, 44 in turn engaging fixed radial walls 45, 47. The sleeves 48 49 are guided in the bore 55 by cylindrical guides 56, 60 with axially disposed slots. One end of the housing 46 is closed by a collar 78 sealed to the housing and to the sleeve 49. The poppet valves are of unequal area and of larger area than the area bounded by the line of contact of the ring 73 with the sides of the groove 51. This partly balances the valve and also gives the driver a sense of "feel". Due to the piston rod 18, the pressures required to move the piston in opposite directions are unequal. The differing diameters of the valves 63, 64 compensates for this. Specification 843,364 is referred to.
Patent GB-156431-A (GB)
Title: Improvements in draught and weather excluders
IPC: E06B7/26
Filed: 1920-02-19
Abstract: 156,431. Norman, A. C. A. Feb. 19, 1920. Addition to 135,429. Draught, dust, and weather excluders. - The fixed part 3 of the excluder described in the parent Specification has a double bend 9 in which the overturned end 10 of the movable part 8 engages when the window &c., is closed. The movable part may travel over the outside of the cowl, &c., 3, the bent ends being correspondingly arranged.
Patent GB-830829-A (GB)
Title: Production of mixed fertilizers containing nitrogen, calcium and phosphate
IPC: C05B11/06
Filed: 1957-02-14
Abstract: A process for the production of a mixed fertilizer from the nitric acid decomposition liquor of a phosphate rock containing fluorine comprises, in combination, the following steps in the order named (a) adjusting the CaO/P2O5 ratio of the decomposition liquor to a valve \sE2 (e.g. by crystallisation and separation of calcium nitrate, or the addition of phosphoric acid), (b) continuously neutralising the acid liquor with ammonia or a pH between 6 and 7,5, (c) reducing the pH to approximately p  4 by addition of an acid, and (d) evaporating the acidified liquor and granulating then drying the product.  The product is such that the phosphate content is almost completely soluble in ammonium nitrate and half of which is soluble in water, while loss of ammonia at the evaporation stage is avoided by the acidification stage.  Potassium salts may be added to the decomposition liquor to obtain an N.P.K. fertilizer and HCl may be used in the acidification step above.  Specification 430,380 is referred to.
Patent GB-589376-A (GB)
Title: Variable electric condenser
Filed: 1945-03-02
Abstract: 589,376. Variable condensers. STANDARD TELEPHONES & CABLES, Ltd. March 2, 1945, No. 5243. Convention dute. March 15, 1944. [Class 37] In a variable electric condenser. two insulated groups of rotor plates 21, 22 supported by metallic sleeves 17, 18 can be rotated simultaneously with a gas-tight glass &c. envelope 1, relative to electrically connected stator plates 38, 39 suspended from a rotatable steel shaft 35 by an arm 36, and kept substantially stationary by a weighted connecting piece 37, as the envelope is rotated by turning a hand wheel 44. The shaft 35 is secured to graphite &c. cylinders 26, 32 revolving in metal sleeves 25, 31 insulatedly connected with inturned portions 23, 29 of the metal sleeves 17, 18 by glass &c. tubes 24, 30. Each of the sleeves 17, 18 is itself secured, as by welding, in an outer sleeve 4, 7, to which the envelope 1 may be fused. Connection is made to the two sets of rotor plates through bearings 8, 9, the whole arrangement constituting two condensers in series. An inert or reduced pressure atmosphere may be present in the envelope 1.
Patent GB-552049-A (GB)
Title: Improvements in or relating to strengthened cylindrical ferrous metal structures
IPC: C21D9/14
Filed: 1941-04-24
Abstract: 552,049. Heat treating alloy steel. BUDD INDUCTION HEATING, Inc. April 24, 1941, No. 5322. Convention date, April 26, 1940.. [Classes 72 and 82 (i)] [Also in Groups XXII] A ferrous hollow cylinder, pipe or the like is made by hardening the inner zone 18, Fig. 2, of a cast or forged sleeve 16 preferably by an electromagnetic heating and quenching device 10, 14 as described in Specification 520,479, and then machining screw threads 24, Fig. 1, fins 22, &c. in the unhardened outer zone. A blank for making the cylinder of an air-cooled engine may comprise the alloy S.A.E. 4140 or a modification containing 0.5 per cent. of carbon, 0.55 of chromium, 0.75 of molybdenum, and 1 of silicon and the finished cylinder may have its temper drawn at 500‹ to 550‹F. or 350‹F. when the modified alloy is used. The blank 16 should preferably have a uniform cross section and extensions 28, 30 to ensure uniform depth of hardening.
Patent GB-575964-A (GB)
Title: Improvements in or relating to the treatment of regenerated cellulose fibres with formaldehyde
Filed: 1944-03-23
Abstract: The water imbibition of regenerated cellulose fibres or staple fibres is reduced by impregnating them with a substantially neutral aqueous solution containing formaldehyde, an organic acid, and a sulphate or chloride of an alkali metal or magnesium, and thereafter drying and heating them.  Formaldehyde may be employed in the form of its monomer, or of a polymer such as paraformaldehyde.  Specified organic acids are lactic and tartaric acids, and specified sulphates and chlorides are those of sodium potassium and magnesium.  Numerous examples are given, in one of which viscose rayon staple is immersed in an aqueous solution containing formaldehyde solution previously neutralised with caustic soda, lactic acid and common salt.  The wet fibres are hydroextracted, dried at 70 DEG  C. in a current of air and finally heated at 135 DEG  C. for 30 minutes.  Specifications 25647/06, [Class 2], 9196/15, [Class 2 (ii)], 426,956, 447,651, 471,988 and 500,184 are referred to.
Patent GB-590417-A (GB)
Title: New process for the manufacture of highly polymeric linear esters of terephthalic acid
IPC: C08G63/78
Filed: 1945-07-05
Abstract: Highly polymeric linear esters are produced from terephthalic acid or an ester thereof and a di-ester of a glycol with a low molecular weight mono-carboxylic acid, containing not more than seven carbon atoms.  Suitable terephthalic esters are aliphatic, cycloaliphatic, or aromatic ones, including half esters.  The glycols are preferably of the formula HO(CH2)nOH, where n may vary from 2 to 10.  Preferred monocarboxylic acids are acetic, propionic and butyric.  Preferably, the ingredients with the glycol ester in excess are first heated at about or above the boiling point of the reaction mixture to form a low molecular weight polymer which is then heated advantageously at reduced pressure, e.g. in conventional distillation equipment to remove by-products.  Suitable ester interchange catalysts which may be employed are metals, e.g. as powder, chips, shavings, ribbon or wire.  Alkali or alkaline earth metals may be used as alcoholates, alkali metals may be used as carbonates or borates, and magnesium may be used as oxide.  Heating may be effected in absence of oxygen, e.g. with a stream of nitrogen passing through and/or over the reaction mass.  Heating is continued until the product can be formed into filaments which may be cold-drawn.  The molten product may be extruded from the reaction vessel and cooled in desired shape.  The polyesters are useful for filaments, fibres, moulding, hot melt coatings, adhesives, plasticisers, binders for coating compositions or for bonding laminated fabrics.  Examples describe the formation of highly polymeric ethylene terephthalate from ethylene glycol diacetate and (1) terephthalic acid, and (2) methyl terephthalate. Specifications 578,079 and 590,451 are referred to.
Patent GB-977608-A (GB)
Title: Dyeing compositions of the anthraquinone series
IPC: C09B1/503
Filed: 1963-02-11
Abstract: The invention comprises a dyeing composition consisting of a mixture of dibromo-diamino-anthrarufin and di-(methylamino)-anthrarufin of the formulae <FORM:0977608/C4-C5/1> The former compound may be made by bromination of the corresponding diamino-anthrarufin in sulphuric acid when the bromine probably occupies the ortho positions to the hydroxy groups, or in nitrobenzene when the bromine probably enters ortho to the amino groups. The mixtures are made by mixing with or without grinding and they dye polyester materials in red-blue to green-blue shades.
Patent GB-938869-A (GB)
Title: An electrical socket with a thermostat mounted therein
IPC: H05B1/02
Filed: 1960-02-16
Abstract: 938,869. Two-part couplings. AANONSEX FABRIKKER. Feb. 16, 1960 [Feb. 20, 1959]. No.5505/60 Class 38 (1). [Also in Group XXXVII] A socket, e.g. for a frying pan, has a sensing finger 36 adapted to enter an opening in the plug of the pan and housing a pile of alternately oriented bimetallic discs 41 which operate a thermal switch (see Group XXXVII). Socket contacts 9, 10 are in a steatite block 6 which, together with earthing clips 16, is fixed against a metal bracket 12 connected to an earth terminal 14. An indicating lamp 26 connected in series with a resistance 28 is connected in parallel with the apparatus circuit and is alight so long as the socket is connected to the voltage supply and the switch is closed.
Patent GB-846238-A (GB)
Title: Improvements in or relating to air cleaners
IPC: F02M35/02
Filed: 1959-02-17
Abstract: 846,238. Centrifugal separators. DONALDSON CO. Inc. Feb. 17, 1959 [Feb. 18, 1958], No. 5513/59. Class 23 [Also in Group XXVIII] An air filter for an I.C. engine comprises an upper section 1, an intermediate section 2 and a bottom section 3. The lower edges of the casing 5 of the upper section and 18 of the intermediate section are provided with substantially identical flanges 13, 27, downwardly extending skirt portions 14, 28 and sealing rings 23, 33 and the upper ends of the casing 18 and the casing 31 of the bottom section are formed by substantially identical skirt members 21, 32 whereby the sections may be releasably connected as shown by bolts 60, 63, or the intermediate section 2 may be omitted and the bottom secured directly. to the upper section. The upper section 1 is provided with an air inlet passage 8, formed by a tube 7, an outlet 12 and a filter (see Group XXVIII). The intermediate section 2 is provided with a lower flange 29, having holes to receive tubes 36, and an upper annular flange 19 which is clamped against the inlet tube 7 and is provided with holes to receive tubes 35 which extend into the tubes 36. A plurality of helical vanes 44 fit in the space between the tubes such that air passing from the inlet 8 through this space causes the heavier particles of dust to separate and fall into the bottom section 3 while the air carrying lighter particles of dust flows through the tubes 35 and thence through the filter in the upper section to the outlet 12.
Patent GB-539716-A (GB)
Title: Improvements in or relating to electric storage batteries
IPC: H01M10/20
Filed: 1940-03-27
Abstract: 539,716. Batteries ; electrolysis. HICKEY, E., and O'KEY, J. L. March 27, 1940, No. 5523. [Classes 41 and 53] The negative electrode of a storage battery comprises a conductor of a lower potential than antimony in sulphuric acid, such as copper or carbon, with negative active antimony in close contact therewith. The positive electrode comprises lead oxide or peroxide or bismuth peroxide, the electrolyte being sulphuric acid. The active antimony material c, Fig. 1, is of spongy formation associated with a copper or other conductor a enclosed in a frame b of acid-resistant material, such as lead or lead alloy, carbon, or a plastic. The negative plates may be interleaved with positive lead plates d of usual construction, or the negative plate may be. arranged centrally with positive plates on each side with their inner edges adjacent the negative plate, Fig. 2 (not shown). In another construction, Fig. 3, the antimony c and glass wool i are carried in a copper container h, the positive electrodes d being supported above, or the antimony and glass wool may be carried in a perforated celluloid container, current being taken from a copper spiral embodied in the antimony, Fig. 5 (not shown). In another construction, lead electrodes are suspended from the lid of a copper box on the inside of which the antimony is disposed by centrifuging. Lithia may be added to the active material. The negative active antimony is obtained by electrolysis of antimony oxide mixed into a paste with sulphuric acid, care being taken to prevent the evolution of hydrogen until the process is complete. Other modifications are described in the Provisional Specification.
Patent GB-1373748-A (GB)
Title: Subaudible remote control tone encoding system
IPC: H04W88/18
Filed: 1973-02-05
Abstract: 1373748 Radio signalling MOTOROLA Inc 5 Feb 1973 [22 Feb 1972] 5647/73 Heading H4L In a radio paging system in which the transmitter transmits a R/F carrier modulated by tones below 300 Hz, the tones are developed in response to audio-frequencies above 300 Hz, which are harmonics of said tones, transmitted from a remote control point via a standard radio or line telephone link. As shown in Fig. 1, an encoder 10 at the remote point includes oscillators 11 for generating the audio-frequencies, two frequencies being selected for sequential transmission over telephone link 14 together with D.C. signals for actuating the transmitter 17. If a radio link is used only the paging signals are transmitted. The paging signals are selected at 16, converted to squarewave signals at 22 and divided at 23 to produce the required calling frequencies. A frequency selector 24 applies signals above 125 Hz to a filter 25 and signals below 125 Hz to a filter 26, the filters being arranged to remove harmonics likely to cause incorrect operation and produce a sine wave output. The outputs of the filters are supplied via a gain control circuit 27, which compensates for filter variations, to modulate the R/F carrier of transmitter 17.
Patent GB-828395-A (GB)
Title: A process for the manufacture of tetrahydrofurfuryl-ammonium compounds
IPC: C07D307/00
Filed: 1958-02-21
Abstract: Tetrahydrofurfuryl-ammonium compounds of the general formula <FORM:0828395/IV (b)/1> (wherein R1, R2 and R3 each represent an alkyl group containing up to three carbon atoms and A is an anion) are made by cyclizing a compound of the general formula <FORM:0828395/IV (b)/2> (wherein X is a free or esterified hydroxy group, e.g. a halogen atom or an alkanoyloxy group) by treating same with a dehydrating agent, and, when X is an esterified hydroxy group, transforming this into a free hydroxy group by hydrolysis or, in the case of a halogen atom, by reaction with a silver salt of an alkanoic acid and hydrolysis of the alkanoyloxy group thereby introduced. Suitable dehydrating agents are dehydrating acids (such as oxalic, phosphoric, succinic, sulphuric or p-toluene-sulphonic acid), acidic salts (such as monosodium phosphate or potassium pyrosulphate) or calcinated salts (such as copper sulphate or zinc chloride).  (2,5 - Dihydroxy - 4 - alkanoyloxy - hexyl) - trialkyl-ammonium chlorides are made by reacting a 2,5 - dihydroxy - 4 - alkanoyloxy - hexyl chloride with an appropriate trialkyl amine.  Trialkyl - (2,5 - dihydroxy - 4 - halogeno - hexyl)-ammonium salts are made by reacting an a  - alkanoyl - d  - halogeno - g  - valerolactone with the appropriate trialkylamine, reacting the product with sulphuryl chloride, hydrolysing and decarboxylating the reaction product and reducing the carbonyl group in the compound so obtained with sodium boron hydride.  Trialkyl - (2,4,5 - trihydroxy - hexyl) - ammonium salts are made by treating the appropriate trialkyl - (2 - hydroxy - 4 - halogeno - 5 - oxo - hexyl) - ammonium salts with an alkaline-earthmetal carbonate to give the corresponding 4-hydroxy compounds and catalytically reducing the oxo group in these compounds to a hydroxy group.  Trialkyl - (2,5 - dihydroxy - 4 - acetoxy - hexyl)-ammonium salts are made from the appropriate trialkyl - (2,5 - dihydroxy - 4 - chloro - hexyl)-ammonium salts by reacting same with silver acetate.
Patent GB-569011-A (GB)
Title: A new or improved process for the manufacture of iron powder
IPC: B22F9/20
Filed: 1943-04-10
Abstract: 569,011. Extracting iron. BIRMING- HAM ELECTRIC FURNACES, Ltd., and HANCOCK, P. F. April 10, 1943, No. 5761. [Class 72] In the production of powdered iron, powdered iron oxide is mixed with powdered carbon and water to form a slurry and heated to 650- 1150‹ C. in a furnace in an atmosphere of partially burnt and purified gas which is reducing to any excess of oxide in the mixture and oxidising to any excess of carbon so as to eliminate substantially any such excess in the product. Instead of carbon, a substance which, when treated, leaves a deposit of carbon, such as flour or molasses, may be used. The gaseous atmosphere contains 5-7 per cent of carbon dioxide, 10-14 of carbon monoxide, 12-15 of hydrogen, 1-3 of water vapour, the remainder being nitrogen. The hot reduced products may be cooled in a neutral or reducing atmosphere such as partially burnt and purified fuel gas which may be enriched in hydrogen, or a mixture of hydrogen and nitrogen.
Patent GB-1485697-A (GB)
Title: Motor-vehicle braking apparatus
IPC: B60T15/14
Filed: 1975-02-11
Abstract: 1485697 Hydrodynamic brakes combined with other brakes DAIMLER-BENZ AG 11 Feb 1975 [16 Feb 1974] 5786/75 Headings F2F and F2E In motor vehicle braking apparatus, particularly for vehicles such as omnibuses having both an exhaust brake and a hydrodynamic retarder a brake valve 10 is operated by a handle 12 the first part of movement of which controls the exhaust brake and the remaining movement of which controls the retarder by means of electromagnetic solenoid valves through switches 14 having actuating fingers 22 moved by means of a cam disc 16 and cam track (21) so that the switches are closed in succession. As shown in Fig. 4 a main switch 26 is followed by successively closed switches 14a to 14c of which 14a controls a valve 27 for filling the retarder and by way of a shunt 28 a first pressure-stage valve 29, the shunt 28 including contacts, of a relay 30, which are open when the relay is energized. As handle 12 is moved both valves 27 and 29 are opened then valve 31 is opened but the relay contacts are opened so that valve 29 is deenergized and the retarder is thus switched to the second pressure stage. As handle 12 is moved yet further switch 14c is closed, valve 29 receives current through line 28a and valves 29, 31 are energized simultaneously to provide maximum braking. In a modification a potentiometer for continuous or stepless control is movable with the operating handle and controls by way of an amplifier both a filling valve and a pressure control valve.