baber/WOPTO huggingface dataset:
Patent GB-203294-A (GB)
Title: Improvements in combined gas generators and burners for liquid fuels
IPC: F23D99/00
Filed: 1923-05-25
Abstract: 203,294. Delaney, M. G. Aug. 29, 1922, [Convention date]. Vaporizing-apparatus; perforated-tube burners. -Liquid fuel and water are fed from supply tanks 25 through valves. 27, 26 and a preheating easing 16 to a generator coil 13 supplying a burner comprising a series of tubular members 9 provided with staggered burner apertures. The preheating casing 16 consists of inlet compartments 20, 21 and a mixing-chamber 18 containing an electrical resistance coil 24 for vaporizing the oil and dissociating the water into oxygen and hydrogen. The mixture produced passes through an extension 29 into the coil 13 either directly or through an intermediate mixing-chamber 30, Fig. 5. The mixing chamber 30 and other parts are composed of catalyzing material. The valves 27, 26 are operated by a single member 28. The burner and generator may be fitted in stoves, furnaces &c. The Specification as open to inspection under Sect. 91 (3) (a) states that the extension 29, the preheating casing 16 and coil 13 may be formed from a suitable catalyzing material and that the apparatus may be used to supply gas to other burners. This subject-matter does not appear in the Specification as accepted.
Patent GB-1142782-A (GB)
Title: Ketoamines and compositions containing them
Filed: 1965-04-01
Abstract: 1,142,782. Keto-amines. WELLCOME FOUNDATION Ltd. (Burroughs Wellcome & CO. (U.S.A.) Inc.). 31 March, 1966 [1 April, 1965], No. 13868/65. Heading C2C. [Also in Division A5] The invention comprises α-t-butylamino-2,5 diethoxy-propiophenone, α-t-amylamino-2,5 dimethoxy - propiophenone, α - (1,1,3,3 - tetramethylbutylamino) - propiophenone, α - t - butylamino-2,5 diproxypropiophenone, and their hydrochlorides, and their preparation by reaction of an appropriate α-halo-propiophenone with an appropriate amine. The compounds may be used for the treatment of diabetic and hyperlipidaemic conditions. α - t - Butylamino - 2,5 dimethoxy - propiophenone is similarly prepared.
Patent GB-1223965-A (GB)
Title: Face steamer
IPC: A61H33/12
Filed: 1969-03-17
Abstract: 1,223,965. Facial steamers. SCHICK ELECTRIC Inc. 17 March, 1969 [16 April, 1968], No. 13907/69. Headings A5R and AST. A facial steamer 10 comprises a housing 12 containing a vapour generator 32 which is connected by a conduit 28 to a liquid reservoir 22, a face mask 14 pivotably mounted on said housing 12 with its bottom end communicating with an outlet of the generator 32, and vapour diffusing means 70 disposed within the mask. The lower end of the mask 14 has a neck 51 with parallel side walls and lower front and rear walls in the form of cylindrical segments 52, 54 which fit into a complementary concave seat 56 on the top of housing 12. The mask is pivotally mounted on housing 12 by a shoulder screw 58 engaged by a nut (60, fig. 3) embedded in a knob (62, fig. 3) on the outside of the housing to lock the mask in any desired position. The steam generator 32, which consists of a heating element 34 surrounded by a water sleeve 36 has its top end connected by a cap 48 to the neck of the mask. The vapour diffusing means consists of a flat plate 70 disposed within the neck portion 51 with its front end located nearer the mask top than the rear end, with a series of spaced holes 74 therethrough in the front half to disperse the vapours throughout the mask. Air may be introduced into the mask through a plurality of circumferentially spaced openings 78 in the front wall 76 of the mask controlled by a circular plate 80 rotatably mounted on the inside of wall 76, which plate 80 has a similar arrangement of openings 82 so that the openings 78 may be entirely opened or closed or in any intermediate position to obtain the required air-steam mixture by rotating a knob 84 fixed to the spindle of plate 80. The upper end of mask 14 is fitted with an elastomeric gasket 55 which has a pliable inwardly extending lip 57 to seal the user's face to the mask: A panel 20 is hingedly mounted to the housing front to give access to reservoir 22.
Patent GB-852593-A (GB)
Title: Polymerization process
IPC: C08F4/32
Filed: 1958-05-01
Abstract: Bead polymers are prepared by polymerising ethylenically unsaturated monomers at below 50 DEG C in the presence of water, a dispersing agent (a) and a catalyst system comprising dicyclopentadienyl iron, an oil-soluble organic peroxide oxidizing agent (b) and a water-soluble reducing agent (c). Specified ingredients are (a) polyvinyl alcohol, gelatin, pectin, methylcellulose, alginates, starch and bentonite; (b) benzoyl, lauroyl, di-t-butyl, acetyl, tolyl, acetyl-benzoyl and o-chlorobenzoyl peroxides, and (c) sodium and zinc formaldehyde sulphoxylates, chlorobenzene-and p-toluene-sulphinic acids, and sodium p-toluenesulphinate, bisulphite and thiosulphate. Dicyclopentadienyl iron and the peroxide (b) are preferably utilized as solutions in the monomer.  Vinyl acetate is the preferred monomer, but other specified monomers are acrylonitrile, ethyl acrylate, methyl methacrylate as well as acrylic and methacrylic acids; vinyl chloride and vinylidene chloride; vinyl stearate; styrene.  Copolymerisatio of e.g. vinyl acetate with either dibutyl maleate or crotonic acid, is also mentioned. Polyvinyl acetate beads prepared according to the invention may be hydrolysed to polyvinyl alcohol by use of e.g. methanolic NaOH. The polymerization reaction may be stopped with hydroquinone. U.S.A. Specification 2,680,756 is referred to.ALSO:A catalyst system, used in suspension polymerization to give bead polymers, comprises dicyclopentadienyl iron, an oil-soluble organic peroxide oxidising agent and a water-soluble reducing agent.  Specified catalyst components are:- sodium and zinc formaldehyde sulphoxylates, chlorobenzene- and R-toluenesulphuric acids, and sodium p-toluenesulphinate, bisulphite and thiosulphate; benzoyl, lauroyl, di-t-butyl, acetyl, tolyl, acetyl-benzoyl and o-Cl-benzoyl peroxides. For polymerization, a dispersing agent such as polyvinyl alcohol, gelatin, pectin, methylcellulose, alginates, starch and bentonite, is also present.  It is preferred to add both the dicyclopentadienyl iron and the peroxide as solutions in monomer, specifically vinyl acetate.  U.S.A. Specification 2,680,756 is referred to.
Patent GB-1108121-A (GB)
Title: Improvements in or relating to a method of and apparatus for the coding and decoding of documents
IPC: G09C5/00
Filed: 1964-04-03
Abstract: 1,108,121. Coding documents. A. H. CORNWALL. 30 March, 1965 [3 April, 1964; 3 June, 1964; 13 Aug., 1964], Nos. 13948/64, 23076/64 and 33118/64. Heading G5X. [Also in Division G2] The information carried on a document is made unintelligible by projecting a series of displaced images on to a single photographic surface or by projecting both the displaced image and that of a prepared screen to form one coded image while a further coded image is produced by a different displacement and screen, both images being necessary to reconstitute the original. Projection apparatus (Figs. 1 and 2). The document to be coded is mounted in a holder 22 and the sensitive surface in a holder 24. A screen such as for example that shown in Fig. 5 is mounted at 20. Light from the illuminated document passes over the mirror system 12 and lens system 2 on to the sensitive surface. The image can be rotated by turning the mirror system, its position being indicated at 19, and displaced by sideways movement of lens 2 as indicated at 9. Coding.-The mirror and lens system are positioned as desired and the displaced image is photographed. The document is then removed, the settings are left unchanged and the screen (Fig. 5) is photographed. The doubly exposed photograph thus produced is known as a file copy. A second file copy is produced by photographing, with different displacements from those used for the first copy, the document and a reversal of the screen of Fig. 5. Decoding is achieved by sequentially projecting on to a film positioned at 22, first one file copy with the lens and mirror settings used in its production and then the second one with the settings used in its production when the original image is produced. Modifications.-Various different methods using simultaneous projection of a subject and a screen and necessitating only a single screen are described in detail. Reference to the possibility of using reversal film to avoid the steps of making reversals from previously exposed film is mentioned. The Specification also refers to a process in which the document is photographed a number of times on to a single surface without the use of screens, different displacements being used for each exposure. Sequential photographs using the file copy decode the document. An arrangement is described (Fig. 41, not shown) in which the light from the document is split into two paths and the image is differently displaced in each.
Patent GB-514693-A (GB)
Title: Improvements in and relating to the production of polyhydric alcohols
IPC: C07C31/18
Filed: 1938-05-11
Abstract: 514,693. Polyhydric alcohols. HELLICAR, A. G., TAYLOR, A. W. C., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. May 11, 1938, No. 14116. [Class 2 (iii)] Polyhydric alcohols are prepared by the hydrogenation of an aqueous mixture containing hydroxy - aldehydes and hydroxy - ketones resulting from the condensation of formaldehyde in aqueous medium and containing residual formaldehyde by subjecting the mixture to the action of hydrogen in the presence of a hydrogenating catalyst and maintaining the pH of the reaction mixture (as measured at atmospheric pressure and a temperature of 20‹C.) within the limits 6.5-10 and preferably within the limits 7-9 by adding to the reaction mixture a substance or substances having an alkaline reaction. Suitable alkaline substances are potassium hydroxide, sodium hydroxide, calcium carbonate, magnesium oxide or magnesium carbonate or non-volatile organic nitrogen bases, e.g., triethylanine,ethanolamines or pyridine or the salts of a weak base with a strong acid, e.g., sodium formate, sodium acetate or disodium orthophosphate. Nickel is preferably used as the hydrogenation catalyst and the hydrogenation may be carried out under increased pressure at an elevated temperature. In the examples a solution prepared by the condensation of formaldehyde in aqueous medium according to the process described in Specification 513,708, is hydrogenated in the presence of magnesium oxide or sodium hydroxide and a nickel catalyst, on kieselguhr as a carrier.
Patent GB-637454-A (GB)
Title: Lid for preserve containers of the type to be opened by a ripping action
IPC: B65D17/50
Filed: 1947-05-27
Abstract: 637,454. Cans &c. opened by tearing. BRUDER, K. May 27, 1947, No. 14125. Convention date, May 24, 1946. [Class 66] A seamed-on lid 3, for a preserve &c. container 1, whose margin may be torn off around a score line 9 underneath the lid by pulling a tab 4, has a cut 5 leading into the score line 9 from a point near the edge of the lid or tab. The cut may be lengthwise of the tab and the width a of the bridge between the outer end of the cut and the edge of the tab may be 1 mm. The score line 9 may fit against the rim 6 of the container and the lid may be secured thereto by a doublerolled seam. The bridge is the first to be torn when the tab 4 is pulled.
Patent GB-833426-A (GB)
Title: Machine for breaking coal or coke or other solid materials
Inventor: CHANDLER TOM
IPC: B02C13/00
Filed: 1955-05-16
Abstract: 833,426. Breaking machines. MERCOL DESCALING CO Ltd., [formerly MERCOL PRODUCTS Ltd.]. May 14, 1956. [May 16, 1955], No. 14127/55. Class 59. A machine for breaking coal, coke or other solid materials comprises a drum 10 in the form of a hollow cylinder rotatable in a clockwise direction in a casing 12 and provided with renewable teeth or spikes 15, material to be broken being fed' substantially tangentially to the drum bymeans of an inclined shoot 13, and the casing being provided with vertical and horizontal walls 16a and 14 and with a curved wall 16 on to which material partly broken by the teeth 15 is thrown so as to be further broken before falling out of the casing through an outlet 17. The wall 16 is preferably concentric with the drum 10. The drum may alternatively comprise a plurality of coaxial cylinders, fitted with renewable teeth or spikes. The peripheral velocity of the drum 10 may be varied either by altering the angular velocity of the drum or by using a drum of different diameter. In a modification, Fig. 2 (not shown), material is fed to the inclined shoot by means of a conveyer, and a second conveyer is associated with or forms the base of the casing for traversing broken material, tending to collect under the rotating drum, to the casing outlet.
Patent GB-927825-A (GB)
Title: Improvements in or relating to bags
Inventor: SEIDNER ANDOR
IPC: A45C9/00
Filed: 1961-04-19
Abstract: 927,825. Bags. SEIDNERS Ltd. [trading as SEAGULL PRODUCTS]. Feb. 20, 1962 [April 19, 1961], No. 14187/61. Class 133. A bag has an in tegral or as shown a separately formed inner lining capable of being pulled out of the mouth of the bag to form in con junction with the bag an air and water-tight body the bag and lining being composed of air and water-tigh material and eithe: the bag or the lining being provided with an inflation valve, e.g. a tube 6 with a captive plug. A carrying cords may be threaded through eyelets 9 adjacent  the mouth of the bag.
Patent GB-202074-A (GB)
Title: An improved moulding machine for foundry use
IPC: B22C15/10
Filed: 1922-05-20
Abstract: 202,074. MacDonald & Son, Ltd., J., and Neesham, J. B. May 20, 1922. Fluid-actuated gears. - The jarring-cam of a foundry moulding-machine is controlled by a sleeve valve 108, normally held against an adjusting-stud 112 by a spring 124. . Pressure fluid admitted at 115 passes by means of an annular recess in the valve through ports 117, 118, 120 to the cam cylinder, At the top of the upstroke of the ram, a port 19 in it registers with a port 21 in the cylinder 3, and admits pressure above the valve 108, which slides in its casing and over a fixed stud 109, cutting off the supply at 116 and opening the cylinder to exhaust by the ports and passages 120, 119, 129, 131, 132, 123, 122, and 133. On the fall of the cam, pressure is exhausted from above the valve by the ports 21, 20, 22, and the spring returns the valve completing the cycle.
Patent GB-1091065-A (GB)
Title: Variable gain control circuit for hearing aids
IPC: H03G3/12
Filed: 1966-03-31
Abstract: 1,091,065. Transistor gain control circuits; hearing aid circuit. H. KÍHLER, and H. MAY, [trading as VIENNATONE HORGERATE ING. KÍHLER UND ING. MAY OFFENE HANDELSGESELLSCHAFT]. March 31, 1966 [April 1, 1965], No. 14295/66. Headings H3T and H4J. A gain control circuit, in particular for hearing aids with an integrated amplifier unit, comprises a feedback path between output and input via a series resistor R K  and the portion of potentiometer P lying between the slider 7 and terminal a, which is earthed for A.C. via a D.C. blocking capacitor C. The microphone M is connected between the slider 7 of the potentiometer and terminal b, which is connected to the amplifier input, so that gain is reduced by shunting the microphone and simultaneously increasing the amount of A.C. feedback.
Patent GB-608659-A (GB)
Title: Improvements connected with brake adjusting devices
IPC: F16D65/54
Filed: 1946-05-13
Abstract: 608,659. Compensating for wear in brakes. NEALE, F. May 13, 1946, No. 14332. [Class 103 (i)] In automatic brake adjusters of the type in which an externally screw-threaded member carried by one of a pair of coacting brake members, e.g. a brake shoe and stop, is acted on by a torsion coil spring so as to be rotated and advanced towards the other brake member to take up clearance as wear occurs, a pair of independent members are connected one to each end of the spring, one member being in driving engagement with the screw-threaded member and the other being located by and non-rotatable relative to a fixed element screwed into the brake member. As shown, a brake shoe 11 is pivoted at 12 and applied by a piston 15 in a hydraulic cylinder 16 acting through a lever 17 and an adjustment device 18. The latter comprises a tubular member 33 which is screwed into a housing 32 mounted in the shoe and is integral with a square shaft 36 engaging a square hole in a sleeve 37 to which one end of a torsion spring 38 is attached, the other end of the spring being attached to a sleeve 39 telescopic with the sleeve 37 and having a square hole engaging a square shaft 40 secured to a cap 41 screwed on to the housing 32. The shoe is retracted by a spring 19, and its retracted position is determined by a second adjustment device 21 second adjustment device 21 mounted in the shoe for cooperation with an adjustable stop 20 on the back-plate. This device is of similar construction to the device 18 and comprises a screwed tubular member 23, housing 22, square shafts 26 and 30, telescopic sleeves 27 and 29, torsion spring 28 and cap 31. The member 23 engages the stop 20 through a plug 25 mounted in a cap 42 and movable between abutments on the member and cap to the extent of the desired shoe-drum clearance, the plug being urged to the right by a compression spring 43. During assembly, the devices 18 and 21 are mounted in the shoe less their telescopic sleeves, springs and caps, and the shoe mounted on the backplate with its application and retraction means. The sleeves are then inserted and the caps 31 and 41 screwed on to their housings to wind up the springs 28 and 38. In operation, rotation of the member 23 by its spring is normally prevented by the spring 43, but, if the wear of the lining is sufficient to allow the plug 25 to abut the cap 42 when the shoe is moved up to the drum, the member is rotated to take up the wear. As the shoe is advanced towards the drum by the device 21, the member 33 of the device 18 is rotated by its spring to take up the resulting clearance between the lever 17 and piston 15 in its retracted position. Specifications 588,035 and 608,650 are referred to.
Patent GB-412749-A (GB)
Title: An improved cake baking tin
IPC: A21B3/13
Filed: 1933-05-17
Abstract: 412,749. Baking - tins. MICHAEL, E. M., 18, Welsh Row, Nantwich, Cheshire. May 17, 1933, No. 14339. Addition to 393,450. [Class 66.] A cake-baking tin consists of a cylindrical wall the lower end of which is provided with an internal rim on which rests a loose bottom J, the wall having two pairs of oppositely-disposed inclined slots C in which engage lugs H projecting from the ends of perpendicular diameters of the bottom. After baking, upward pressure thereon raises the bottom into position for cooling the cake, the lugs rising in the slots and coming to rest in down-turned extensions D formed at the upper ends thereof.
Patent GB-829663-A (GB)
Title: Azetidinones
Inventor: TESTA EMILIO
IPC: C07D205/08
Filed: 1957-05-06
Abstract: The invention comprises compounds of the formula <FORM:0829663/IV (b)/1> (wherein R and R1, which are the same or different, are alkyl radicals of at most 8 carbon atoms, or aryl, aralkyl or cycloalkyl radicals), including their optically active forms, and their preparation by hydrogenating an R : R1-substituted-cyanoacetic acid alkyl ester with Raney nickel in an inert, anhydrous, organic solvent such as ethanol at 20 DEG  to 100 DEG  C. and a pressure of 10 to 150 atmospheres to form an R : R1-substituted-beta-amino-propionic acid ester, refluxing this with strong mineral acid, e.g. HCl, to give the free acid, reacting this with excess PCl5 in acetyl chloride at between about 0 DEG  and 20 DEG  C. to give the acid chloride hydrochloride and treating this with anhydrous ammonia or a tertiary amine in an anhydrous, inert, organic solvent, such as ethyl ether, at room temperature or below.  It is also stated that when R or R1 is cycloalkyl the compounds of the invention may be obtained by hydrogenation of the corresponding unsaturated compounds.  Examples are given, including the resolution of ethyl DL-alpha-phenyl-alpha-ethyl-beta-aminopropionate through the enantiomorphic salts with D-dibenzoyl tartaric acid and the conversion of each optical isomer to the corresponding optically active azetidinone.  R : R1-substituted cyanoacetic acid alkyl esters are prepared by hydrolysing an R : R1-malonic acid dialkyl ester to the mono-ester, treating this with thionyl chloride to give the mono-ester mono acid chloride, treating this with ammonia in an anhydrous, organic solvent to give the mono-ester mono-amide and heating this with phosphorus pentoxide; or, when R1 is alkyl or cycloalkyl, by reacting a nitrile RCH2CN with diethyl carbonate in an anhydrous, inert organic solvent in presence of alcohol-free sodium alkoxide to give an alkyl alpha-R-cyanoacetate and treating this with the halide R1-hal.
Patent GB-1421274-A (GB)
Title: Valve for a pressurized dispensing container
IPC: B65D83/14
Filed: 1973-03-26
Abstract: 1421274 Pressurized dispensing containers J P RODDEN 26 March 1973 14369/73 Heading F1R A dispensing valve of a pressurized dispensing container is actuated to release excess pressure in the container by movement of a valve body 18 relative to a valve stem 19a. The valve body 18 is slidably received in a valve shell 16 which is secured to a valve cup 12, and the valve body moves outwardly under the influence of excess pressure in the container against the action of a spring 23 and an annulus 29 of resilient material e.g. cork. Depression of the stem 19a during the normal dispensing procedure unseats a resilient feather edge 27 at the inner end of the stem from the inner end of the body 18 to expose radial ports 44. The stem is moulded of plastics material but may alternatively comprise a metal tube, Fig.7, (not shown). In an alternative embodiment, Fig.4 (not shown) the radial parts are replaced by flats (37) on a cylindrical inner portion (19') of the valve stem, the flats being sealed from the interior of the container in the valve-closed position by means of a resilient washer 267, Fig.2 (not shown).
Patent GB-914372-A (GB)
Title: A drip feed indicator
IPC: A61M5/168
Filed: 1960-04-25
Abstract: 914,372. Surgical drip - feed indicators. JONES, H. G. July 14, 1961 [April 25, 1960], No. 14411/60. Class 81 (2). [Also in Group XXIX] A drip-feed indicator comprises a housing 3, containing a light source and a photo-sensitive device, and an indicator lamp 6 which becomes energized when light falling on the photosensitive device is reduced by the passage of a drop. The housing is mounted around the drip chamber 2 of blood administering apparatus. A photo-sensitive transistor in the housing is arranged in a circuit (Fig. 2, not shown) which includes the indicator lamp and a capacitor and resistances for determining the period for which the indicator lamp is energized at the passage of each drop. The circuit components are disposed in a housing 4 separate from the first housing 2 and the indicator lamp. The device may be used to give a dial reading of the number of times the indicator lamp is energized.
Patent GB-471696-A (GB)
Title: Improvements in circuit arrangements incorporating cathode-ray tubes
IPC: H01J29/74
Filed: 1936-05-21
Abstract: 471,696. Directive wireless signalling- PLESSEY CO., Ltd., and BAILEY, C. E. G. May 21, 1936, No. 14427. [Class 40 (v)] [Also in Group XXXVI] In order to eliminate interaction between the control fields applied to the two pairs of deflecting plates in a cathode-ray tube, and to make the path of the electron stream strictly rectilinear, a compensating voltage is tapped off from the input to one pair of plates and is fed to the other. As shown in the Figure, the plates X, XI are connected to earth 1 through resistances 2, 3 in series. The other pair of plates Y, Y1 are connected through resistances 4 to the junction points 5 between resistances 2 and 3. A switch 6 enables the phase of the common coupling to be reversed. In alternative arrangements, (a) the resistances 2, 3 are inserted in the lead from one only of the plates ; and (h) the two resistances are replaced by a common potentiometer. The arrangement may be applied to a cathode-ray tube used as an indicator in wireless direction finding.