baber/WOPTO huggingface dataset:
Patent GB-946322-A (GB)
Title: Process for purifying 4,4 dihydroxydiphenylpropane 2,2
IPC: C07C39/16
Filed: 1961-01-30
Abstract: 4, 41 - Dihydroxydiphenylpropane - 2, 2 (bisphenol-A), which has been prepared by the condensation of phenol with acetone in the presence of a strong acid and a promoter, e.g. thioacetic or thioglycollic acid, is purified by treating the reaction mixture with additional water and a water-immiscible organic solvent, heating the mixture to 70-100 DEG C. to form a liquid system comprising an organic phase rich in bisphenol-A and an aqueous, acid-containing phase, cooling the mixture to effect crystallization of the bisphenol-A from the organic phase and separating the bisphenol-A, e.g. by centrifuging or filtration. The product may then be washed with the organic solvent and the residual solvent steamed out.  Addition of an inorganic salt, e.g. sodium chloride, promotes the separation of the reaction mixture into phases. The process may be modified by replacing the aqueous layer in the reaction mixture by an equal volume of fresh water. Specified organic solvents are toluene, xylene, monochlorobenzene and tetrachlorethane. Examples are given. Specification 795,236 is referred to.
Patent GB-451242-A (GB)
Title: Improvements in and relating to kerbs, road islands, and like devices for guiding road traffic
IPC: E01F9/588
Filed: 1935-02-02
Abstract: 451,242. Illuminated traffic - guiding devices. BLASDALE, L., 92, Russell Drive, Wollaton, Nottingham. Feb. 2, 1935, No. 3452. [Class 107] [See also Group XI] A traffic-guiding device consists of a member 1, Fig. 2, of inverted channel-section which is provided with means for mounting an electric lamp or lamps 4 on it, and means for securing it on the road surface. The cables leading to the lamps are housed within the member itself. The securing means may consist of rag bolts or spikes which pass through holes 3 in the base flanges 2 or, alternatively, U-shaped bridge pieces or stirrups similarly anchored to the ground are arranged at spaced intervals. The member may be locally strengthened adjacent each lamp, the standard or holder 5 of which is formed integrally with or is secured to the member. As shown in plan in Fig. 5, a number of members may be arranged end to end to form a continuous line along the centre of a road. Adjacent the level crossing 10 larger lamps 11, lamps of different colour, or lamps mounted on taller standards are provided. In another application, curved members are assembled end to end to form the boundary of a street island, and in a further application they are assembled to form parking spaces 14 for cars, as shown in Fig. 7. The members may be made of cast metal, pressed steel, timber, glass, non-ferrous metal, or concrete. British Specification 387,807 and U.S.A. Specification 1,881,376 are referred to.
Patent GB-296261-A (GB)
Title: Improvements in and connected with ladies' handbags and the like
IPC: A45C3/06
Filed: 1928-02-03
Abstract: 296,261. Passes, M. Feb. 3, 1928. Hand and like bags.-A detachable outer cover for a lady's hand bag comprises a foldable backing of leather or other flexible material provided with a pocket 2<a> into which the flap 1<b> of the bag takes and .with corner pieces 5 of leather &c. adapted to receive the rear lower corners of the body of the bag. The bag is held closed by the engagement of fasteners 4 provided on the part 2<a> and on the front of the bag proper.
Patent GB-636439-A (GB)
Title: Strainers for tea, coffee and like pots or containers
IPC: A47J31/14
Filed: 1948-02-06
Abstract: In a strainer according to the parent Specification, the straining element is of domical, conical or other shape raised from a plane. The element, which is of wire gauze, has a peripheral flange by which it is attached to the body of the strainer.ALSO:In a strainer for tea, coffee and the like, according to the parent Specification, the straining element is of domical, conical or other shape raised from a plane.  The element, which is of wire gauze, has a peripheral flange by which it is attached to the body of the strainer.
Patent GB-1013653-A (GB)
Title: Sanitary cover for nursing nipple
Inventor: SOTO RICARDO HURTADO
IPC: A61J11/00
Filed: 1964-01-28
Abstract: 1,013,653. Feeding bottles. LACTO-SEAL Inc. Jan. 28, 1964, No. 3504/64. Heading A5X. In order to maintain the teat of a feeding bottle sterile it is fitted with a cylindrical cover and its base is then introverted within the neck of the bottle where the teat and cover are locked by interengaging ribs. The teat is of the type which is attached.to the wide neck 27, Fig. 4, of the bottle 20 by a broad flange 26 around a flat annular portion 28. The upper portion 31 of the teat is associated with a conical, breast portion 34 mounted on a relatively thick, projecting base portion 33. The cover 23 comprises a cylindrical portion 37 provided with a closed, upper end 39 and a radially projecting, annular flange 40. This cover is pressed downwards over the teat, as in Fig. 6, and the movement is continued so that the annular portion 28 is pressed downwards within the neck. This is followed by introversion of the conical portion 34 which results in the projecting step of the base 33 turning over and engaging behind a projecting rim at the lower end of the cylindrical part 37 of the cover. This condition is shown in Fig. 8, in which it is also seen that the radial flange 40 presses tightly against the flat portion 28 to enhance the seal.
Patent GB-323145-A (GB)
Title: Improvements in or relating to tradesmen's tickets and the like
IPC: G09F7/08
Filed: 1929-02-02
Abstract: 323,145. Southwick, J. Feb. 2, 1929. Labels. - A frame for interchangeable letters comprises a flat base a, Fig. 1, having a number of locating recesses a<1> constituted by slitting the base and raising the adjacent material thereof to form. a pocket, and a number of letters b, Fig. 4, each of which is provided with at least two lugs or projections b<1>, or, in the case of hyphens &c., is fixed to an independent member c<1>, which is similarly provided with lugs. These lugs are adapted to be engaged with the locating recesses a<1> by a flexing operation. The flat base plate may be of metal, ebonite &c., and the letters &c. of any flexible material, such as thin sheet metal, celluloid, &c.
Patent GB-524702-A (GB)
Title: Improvements in valve mechanism for controlling hydraulic pressure
IPC: F16K11/07
Filed: 1939-02-03
Abstract: 524,702. Fluid-actuated valves. SCHOENING, P., SCHOENING, A., and SCHOENING, B. Feb. 3, 1939, No. 3670. Convention date, Feb. 15, 1938. [Class 135] In a hydraulic control mechanism for friction clutches, in which liquid is supplied from an accumulator charged by a pump, the control valve comprises an adjustably spring-loaded piston valve 20 adapted, under the influence of pressure prevailing in a delivery conduit leading from an outlet 12<SP>1</SP> to the clutch, to connect that conduit, through a bore 24, radial channels 25 and a circumferential groove 23, either to a supply conduit from the accumulator terminating at 26 or to an exhaust conduit leading from a tapered drain-port 27 to a tank from which the pump sucks. The adjustment of the spring 21 as shown is such the fluid pressure necessary in the delivery conduit to close the inlet port 26 leaves the clutch disengaged, but the latter may be engaged to any desired degree by moving the cam 11 by means of the control lever 10 about its pivot 31 until, when the cam has rotated through 180 degrees the spring will be sufficiently stressed to maintain the inlet port 26 open until the clutch is fully engaged. The spring may be adjusted by other means than that shown, or the cam may be pre-set by an adjustable stud connected thereto, in which case the control lever 10 may actuate a separate valve in the pressure supply line.
Patent GB-468349-A (GB)
Title: Clutch control mechanism
IPC: F16D11/02
Filed: 1937-02-08
Abstract: 468,349. Operating clutches. FAIRBROTHER, H. (Tomkins-Johnson Co.) Feb. 8, 1937, No. 3712. [Class 80 (ii)] In a one-revolution clutch for power-presses, riveting - machines, &c., the control pedal 82 is connected to a rod 56 which carries at its upper end a pivoted spring-pressed latch 68, the lower arm of which normally engages a surface 78 on a member 60 having a stem 64 slidable in the rod 56. A pin 50 arranged in a longitudinal slot in the rod 56 engages between forks in the member 60 and in a rotatable plate 34, which latter has an arm 38 formed with a cammed end co-operating with a projection 42 on the spring-pressed radially slidable clutch key 20. When the pedal is depressed, the member 60 moves downwards with the rod 56, causing the plate 34 to turn to disengage the arm 38 from the key 20, and the clutch therefore engages. During the course of the revolution, a cam 72 on the shaft 12 engages the upper arm of the latch 68 and moves the latter off the surface 78. The plate 34 thus returns to its original position under the action of a spring 48, and the clutch inevitably disengages after one revolution. To re-engage the clutch, the pedal 82 must first be released and then depressed.
Patent GB-246675-A (GB)
Title: Improvements in brakes for perambulators
IPC: B62B9/08
Filed: 1925-02-11
Abstract: 246,675. Guest, J. E., and Guest, O. D. Feb. 11, 1925. Hooks, spring.- A brake for perambulators comprises a pair of spring- pressed members 1, 2, each comprising a jaw portion and a handle portion and having a slot intermediate between the ends, a connecting plate 3 being riveted in the slot in the member 1 and provided with a pivot 5 for the member 2.
Patent GB-832758-A (GB)
Title: Method of manufacturing crankshafts automatically
IPC: B23B7/12
Filed: 1956-02-08
Abstract: 832,758. Lathes. LE BLOND MACHINE TOOL CO., R. K. Feb. 8, 1956 [May 17, 1955], No. 3902/56. Drawings to Specification. Class 83 (3). A method of machining crankshafts comprises presenting them in a predetermined orientation to a first machine to turn certain journal-areas, gauging them, and subsequently machining other journal areas in a secondmachine, the machining being stopped if the gauge fails to accept a crankshaft. The machine described is similar to that described in Specifications 832,757 and 832,759.
Patent GB-989429-A (GB)
Title: Process for the preparation of formaldehyde polymers
IPC: C08G2/00
Filed: 1962-02-01
Abstract: Formaldehyde is polymerized in a liquid vehicle containing as polymerization initiator at least one compound of formula MR3 or MR4Z where M is phosphorus, arsenic or antimony, Z is an acid group and R3 and R4 are respectively three or four groups at least one of which is an amino radical substituted by two identical or non-identical hydrocarbon radicals or is a heterocyclic amino radical, any remaining groups being hydrocarbon radicals.  Typical activators are tri-(dimethylamino)-phosphine, tri - (diphenylamino) - phosphine, tri - (diethylamino)-decyl phosphonium acetate, tri-(di-n-propylamino) - arsine and tri - (diethylamino) - monoethyl stilbine.  Specified liquid vehicles are hydrocarbons, ethers and halogenated hydrocarbons.  Known initiators may also be present; the process may be carried out as a continuous or discontinuous process. Specifications 938,426, 938,427 and 938,428 are referred to.
Patent GB-1335641-A (GB)
Title: Preparation of 2-amino-3-pyridylcarbonyl-thiophene derivatives  and pharmaceutical compositions containing them
IPC: C07D495/04
Filed: 1972-01-27
Abstract: 1335641 2-Amino-3-pyridinecarbonyl-thiophene derivatives YOSHITOMI PHARMACEUTICAL INDUSTRIES Ltd 27 Jan 1972 [5 Feb 1971 28 Aug 1971] 3981/72 Heading C2C Compounds of Formula I wherein each of R<SP>1</SP> and R<SP>2</SP> is H or alkyl or R<SP>1</SP> together with R<SP>2</SP> is -(CH 2 ) 4 - and R<SP>3</SP> is H. or alkyl are prepared where R<SP>3</SP> is H by reaction of compounds of formulae with sulphur and where R<SP>3</SP> is alkyl by hydrolysis of a compound of Formula IV wherein Z is a reactive acid residue. Intermediates of Formula IV above where Z is acetyl or p-toluenesulphonyl are prepared by reaction of a compound of Formula V with R<SP>3</SP> halogen. Intermediates of Formula V above are prepared by reaction of a compound of Formula I above wherein R<SP>3</SP> is H with acid ZOH. Pharmaceutical compositions in conventional forms for oral administration having analgesic and anti-inflammatory activity comprise a compound of Formula I above and a carrier therefor.
Patent GB-1020783-A (GB)
Title: Process and apparatus for measuring photographic exposure time
IPC: G03B27/72
Filed: 1963-01-31
Abstract: 1,020,783. Photo-electric exposure control. KALLE A.G. Jan. 31, 1963 [Feb. 7, 1962], No. 4041/63. Heading G1A. [Also in Division G2] The correct exposure time for photosensitive material responsive to wavelengths from 3000 to 4500 Angstroms is determined using a photosensitive element behind a filter system, the product for each wavelength of the sensitivity of the element and the transmissivity of the filter system being approximately the same as the sensitivity of the photosensitive material at that wavelength. The filter system may comprise one or more gelatine, liquid, interference or, preferably, glass filters. The filter system and photosensitive element may receive directly from a light source or through a master to be copied. In diazo printing light passing through the printing paper may be received and exposure terminated when the output of the photosensitive element reaches a maximum.
Patent GB-546762-A (GB)
Title: Improvements in or relating to spiral retarders for flues
IPC: F24H9/00
Filed: 1941-03-26
Abstract: 546,762. Moulds patterns. TOWN GAS BOILERS (BONECOURT), Ltd., and PHILLIPS, R. B. March 26. 1941, No. 4066. [Class 83 (i)] [Also in Group XII] A cast spiral retarder for flues is modified so that, relative to one or more longitudinal planes through it, each part into which it is thus theoretically divided has all the surfaces of its projecting parts substantially parallel so that the pattern can be removed from the mould by a straight and parallel draw. The form F, Fig. 1, can be moulded in two flasks, with a longitudinal parting plane, and comprises pairs of trough sections a, a<SP>1</SP> arranged back-to-back and with their axes A, A ; A<SP>1</SP>, A<SP>1</SP> at right angles, these pairs being connected corner to corner as shown in Fig. 1, so that the bottoms b of all the troughs are in the same plane, and this coincides with the parting plane of the mould. The sides of the troughs a, a<SP>1</SP> may be slightly curved and have a tapering section to assist drawing and the edges of these sides are curved to fit inside a tube and may be machined.
Patent GB-1177125-A (GB)
Title: A process for Purifying Proline
IPC: C07D207/16
Filed: 1967-01-27
Abstract: 1,177,125. Proline; pentachlorophenol adduct. AJINOMOTO CO. Inc. 27 Jan., 1967 [1 Feb., 1966], No. 4135/67. Heading C2C. Proline is purified by contacting proline and at least an equimolar amount of pentachlorophenol (or an alkali metal salt thereof) in an aqueous medium at a pH of from 3 to 8, isolating the novel proline-pentachlorophenol adduct, and recovering proline by decomposition of the adduct. Decomposition of the adduct may be effected by treating it with aqueous mineral acid, by treatment with a strongly cationic ion-exchange resin, or by suspending the adduct in water and, preferably, heating. The process may be applied to optically active proline or racemic proline or to mixtures thereof, e.g. as fermentation broth or an acidic or enzymatic hydrolysate of proteins.
Patent GB-305635-A (GB)
Title: Improvements in and relating to picture transmission
IPC: H04N1/036
Filed: 1929-02-08
Abstract: 305,635. Lorenz Akt.-Ges., C. Feb. 8, 1928, [Convention date]. Void [Published under Scct. 91 of the Acts]. Copying-telegraphs.-In a method of producing screened pictures for half-tone blocks or picturetelegraphy, the. original is scanned with a light beam, and the resulting current fluctuations control an optical recorder. The picture is mounted' on a rotating and traversing drum and the light reflected from the picture-element passes into a light-sensitive device, the current fluctuations arising therein being passed into an amplifier and light-controlling device which controls a second light-beam scanning a photographic surface on a second drum mounted on the same shaft as the first. The new picture thus formed may be rotated through 90‹ and the process repeated to give cross screening. The transmitting and receiving drums Z1, Z2 are mounted on the same shaft, Z, being one of several interchangeable drums of varying sizes. Light from L, is concentrated at p, by lens O1 and the reflected light passes through lens O2 to light-sensitive device S. The fluctuating currents from S pass into an amplifier V the output of which is connected to a string galvanometer or oscillograph G which controls the width of the line traced on the drum Z2 by the light beam from L2 focussed at P2 by lenses O3, O4. The string of the galvanometer is set perpendicular to the axis of the drum to record lines of varying width. Diaphragms may be used iu the optical system to alter the tone values of the picture.
Patent GB-137411-A (GB)
Title: Improvements in or connected with interplane struts for aeroplanes and similar aircraft
IPC: B64C3/18
Filed: 1919-02-20
Abstract: 137,411. Saunders, S. E. Feb. 20, 1919. Framework; planes, arrangement of.-An interplane strut for aeroplanes and like machines comprises two uprights c, d to which are attached streamline formers e connected at their front and rear ends to battens f, g, the whole being covered with plywood h, preferably having its laminµ stitched together as described in Specifications 222/98, [Class 113 (i), Ships &c., Div. I.], and 105,412, [Class 145 (ii), Wood. Working]. The formers e are made of increasing length towards the ends of the strut as indicated in Fig. 1. The ends of the strut are attached to rabbeted collars i, j, Figs. 1 and 3, secured to box-ribs a' on the upper and lower planes a, b.
Patent GB-559328-A (GB)
Title: Improvements in apparatus for the addition of an inert gas to the fuel and air mixture supplied to internal combustion engines
IPC: F02M25/07
Filed: 1942-03-31
Abstract: 559,328. Adding inert gas to charge. BLANC, W. A., and PAICHE, J. P. L. March 31, 1942, Nos. 4298 and 4299. Convention dates, Oct. 6, 1941, and Dec. 29, 1941. [A Specification was laid open to inspection under Sect. 91 of the Acts, Sept. 25, 1942.] [Classes 7 (ii) and 7 (iii)] An apparatus for adding exhaust gas or other inert gas to the mixture supplied to an engine comprises a supply pipe 101 for the inert gas terminating in a mixing device 114 downstream of the carburetter and fitted with a throttle 121 operated in dependence on the mixture throttle 117 and with an adjustable plunger 108 for varying the cross-section of the pipe. As shown in Fig. 1, the pipe 101 is L- shaped and provided with cooling fins. It is connected to the engine exhaust pipe 128 by a pipe 127, an expansion vessel 126 with baffle plates, and a flexible or other pipe 130. The gases are admitted to the induction pipe 116 through downwardly directed openings 115 in an interchangeable venturi 114. The piston 108 has a screwed stem 109 adjustable by means of a screwdriver and retained by a locknut 111. The throttle 121 is connected by levers 123, 120 and an adjustable link 122 to the mixture throttle 117, or may be actuated by engine suction. A hand-actuated throttle 124 enables the exhaust gas to be cut off when the engine is run on a mixed fuel such as producer gas and petrol. In a modification, the main supply of exhaust gas is taken from the exhaust pipe beyond the silencer, and a smaller supply from a point near the engine to an expansion chamber interposed in the pipe 120. In a further form, Fig. 3, the bore of the venturi 222 is widened at 226, above the inlets 224 for exhaust gas, to facilitate drawing in the exhaust gas by suction. The Specification as open to inspection under Sect. 91, includes also a construction not provided with the piston 108, and states that the inert gas may be supplied to the air intake of a carburetter. This subject-matter does not appear in the Specification as accepted.
Patent GB-923444-A (GB)
Title: End-fitting or capping for ropes and cables and a method of forming it
IPC: F16G11/05
Filed: 1961-02-06
Abstract: 923,444. Capping ropes. J. R. MORTON. Feb. 6, 1962 [Feb. 6, 1961], No. 4311/61. Class 109. A method of capping a rope 17 of synthetic or natural fibres comprises impregnating the end of the rope with a binding agent, inserting a rigid core 6 into the impregnated end of the rope to enlarge that end and then drawing said enlarged end into a tapered sleeve 1 so that the fibres of the rope are gripped between the sleeve 1 and the core 6. The binding agent may be allowed to set hard before or after the enlarged end is drawn into the tapered sleeve. In the latter case the sleeve 1 acts as a mould and in the former case a separate split mould be used. As shown, the core 6 has an axial hole 8 through which a bunch of central rope strands may pass. To ensure that the impregnated and enlarged end of the cable is securely compressed within the sleeve 1 the capping may include a plug 12 that screws into the sleeve to compress a spring member 16 against an inner sleeve 10, the sleeve 10 having a flared end that cooperates with a sharp taper 9 of the core 6 to form an annular space 11 through which the outer strands of the rope extend. The binding agent may be in the form of a polyester resin, that is to say, a synthetic resin based on unsaturated polyesters that are crosslinked, during setting, by a monomer such as styrene.