baber/WOPTO huggingface dataset:
Patent GB-629481-A (GB)
Title: Improvements in or relating to the production of resinous materials
IPC: C08G2/00
Filed: 1947-02-27
Abstract: Ketone-aldehyde resins are obtained by condensing under alkaline conditions furfuraldehyde and a ketone having an a -hydrogen atom and condensing under acidic conditions the resulting condensation product with formaldehyde.  The products may be used for impregnating sheets for laminations, or moulded with fillers such as asbestos, wood flour, slate dust, or iron oxide, or in binding abrasives such as sand, emery, and carborundum, or in paints or electrical insulation. They may be co-polymerized with, e.g. vinyl chloride and acetate polymers or used with alcohol soluble lignin and phenol formaldehyde resins, or milled with natural rubber, or reclaimed rubber, or synthetic rubber such as Buna or polychloroprene; they are dissolved by ethyl and isopropyl alcohols, furfuraldehyde, aromatic solvents, ketones, and dissolve shellac, hardwood pitch, oxidized abietic acid resins, oxidized terpenes, polyamide-polybasic acid condensation products, gelatine, blood albumen, oil-free soya bean meal, oxidized drying oils, cashew nut shell liquid and resins.  In examples, the following ketones are reacted with furfuraldehyde in the presence of sodium hydroxide and the product reacted with formaldehyde in the presence of lactic acid: acetone, methyl ethyl ketone, methyl iso-butyl ketone, diacetone alcohol, isophorone, cyclohexanone, phorone, mesityl oxide, acetophenone, n-amyl ketone, acetonyl-acetone, diethyl ketone, diisobutyl ketone.  The curing times of the products may be reduced by addition of hexamethylenetetramine, caustic soda solution or lime.  In further examples the resinous products are mixed with (example 2) hexamethylene tetramine and wood flour (example 21) with wood flour, zinc oxide, and iron oxide; butadiene synthetic rubber, and zinc oxide; ethyl cellulose, alcohol and the oxidized methyl ester of abietic acid.
Patent GB-1143340-A (GB)
Title: Electrophotographic material
Inventor: FOX CHARLES JUNIUS
IPC: G03G5/06
Filed: 1968-02-05
Abstract: 1,143,340. Chalcones. EASTMAN KODAK CO. 5 Feb., 1968 [3 Feb., 1967], No. 5692/68. Heading C2C. [Also in Division H1] Chalcones of formula where R<SP>1</SP> is phenyl and R<SP>2</SP> is H, dimethylamino, diethylamino or diphenylamino, are prepared by the reaction of an aldehyde with an active methylene compound. The reaction of 4- formyltriphenylamine with 4-acetyltriphenylamine and sodium methylate in ethanol yields 4,4<SP>1</SP>-bis-(diphenylamino) chalcone as yellow crystals from hexane, m.p. 88-91‹ C. or as orange crystals from ethanol, m.p. 150-151‹ C. Treatment of 4-diphenylaminobenzaldehyde with 4-dimethylamino acetophenone under similar conditions affords 4-diphenylamino-4<SP>1</SP>- dimethylamino chalcone m.p. 159-164‹ C. whilst the reaction of 4-diphenylamino benzaldehyde and acetophenone gives 4-diphenylamino chalcone m.p. 120-126‹ C.
Patent GB-679873-A (GB)
Title: Apparatus for densifying and granulating solid substances
Inventor: WILM JOHANNES DIEDERICH
IPC: B01J2/12
Filed: 1950-03-08
Abstract: <PICT:0679873/III/1> An apparatus for densifying and granulating dry solid materials, particularly carbon black, comprises a rotary drum 8, whose axis is horizontal or slightly inclined, divided into compartments by partitions 14, 15, 16, disposed at right angles to the axis of the drum, which have holes 17 closed by adjustable slides (not shown) to any desired extent, and means for feeding, screw conveyer 7, and removing material at a substantially constant rate. The granules at the exit end are lifted by ploughs 18 to a connected rotary cylindrical offtake chamber 23 having baffles 24, and pass thence through screen 25 to remove oversize.  Hammers 19 which reciprocate in guides 20 by the action of cams on the surface of drums 8 may be provided.
Patent GB-547770-A (GB)
Title: Means for sealing the gap between fixed and relatively movable aerofoil surfaces
IPC: B64C9/02
Filed: 1941-05-06
Abstract: 547,770. Aircraft control surfaces. BLACKBURN AIRCRAFT, Ltd., DOHERTY, E., and TRUYENS, C. P. J. May 6, 1941, No. 5897. [Class 4] The vane 2 of a balanced control surface is fitted with a packing strip 3 bearing against a flexible plate 4 on the fixed aerofoil in order to prevent air from passing past the vane, the flexible plate being normally of a flatter curvature than the path of the strip 3. The plate 4 may be secured at both edges to brackets 5 as shown or one edge may be permitted to slide. The outer coverings 7 of the fixed aerofoil are extended into proximity with the control surface 1 and the rear edges of the extensions are strengthend by stiffening members 9, 10.
Patent GB-817790-A (GB)
Title: Improvements in or relating to acid baths for cleaning and pickling metal
IPC: E01C19/10
Filed: 1958-02-24
Abstract: An acid bath for cleaning and pickling metals contains an amount of triphenyl sulphonium chloride sufficient to reduce acid attack on the metal.  The bath may comprise sulphuric, phosphoric, hydrochloric, hydrofluoric, hydrosilicic, or sulphuric acid with not more than 1 per cent by weight of triphenyl sulphonium chloride, and may be used for cleaning and pickling steel, zinc, and aluminium.  It is stated that a bath of sulphuric acid with triphenyl sulphonium chloride is particularly suitable for cleaning dairy equipment.
Patent GB-212577-A (GB)
Title: Improvements in apparatus for cooling the cylinders of engines
IPC: F01P3/02
Filed: 1924-03-07
Abstract: 212,577. Bernard, A. L. R. March 8, 1923, [Convention date]. Void [Published under Sect. 91 of the Act]. Heat of compression, absorbing. -A cylinder jacket 2 has an enlargement 3 at one side provided with one or more air passages 5 communicating with the atmosphere at 7 and with a chamber 9 from which the air is drawn by a fan 12 which forms part of, nr is connected to, the fly-wheel 11. The enlargement 3 has a funnel-shaped mouth 4 and is filled with water or a liquid having a higher boiling point. The inlets 7 are in such a position as not to be exposed to the stream of heated air from the fan and the passages 5 may be integral with the jacket 2, and of V-formation and have cooling- fins 13. In a modification the enlargement 3 has walls which are corrugated or ribbed in crosssection and is enclosed in an outer shell, between which and the walls the cooling air passes; the shell may be tubular and coaxial with the cylinder.
Patent GB-160456-A (GB)
Title: Improvements relating to thermionic valves
IPC: H01J1/13
Filed: 1921-02-22
Abstract: 160,456. Latour, M. March 18, 1920, [Convention date]. Thermionic valve circuits.-The filaments 3, 4, and 5 of thermionic valves are connected in series, and are shunted respectively by resistances 6, 7, and 8 having negative temperature coefficients.
Patent GB-176366-A (GB)
Title: New, or improved, apparatus for re-trueing axle journals
IPC: B23B5/06
Filed: 1922-03-01
Abstract: 176,366. Tavaszy, J., and Balog, H. March 1, 1921, [Convention date]. Portable turning-apparatus.-In a device for trueing axle journals in situ a U-shaped frame 1 secured to a clamping-ring 2 fitting over the inner end of the journal is provided with clamping-jaws 10 actuated by worm gearing from parallel shafts 8, the apparatus being further positioned by a screw 11 engaging the centre in the axle. A cylindrical shell 6 bearing at one end in the clamping-ring 2 has a toothed rim rotated through a pinion 4 by means @ a handle 7, and is provided with a guideway for a toolholder 16 traversed by a feed-screw 13 operated by a star-wheel 14, which at each revolution engages a fixed stud 15 on the frame. After the clamping of the apparatus is completed, the shafts 8 may be disconnected from the actuating- mechanism by displacing the coupling 3 and pinion 5. The device may alternatively be driven from an electric motor.
Patent GB-525620-A (GB)
Title: Improvements in or relating to processes for the production of inscriptions or pictures on glass windows and doors
IPC: B41M1/34
Filed: 1939-02-23
Abstract: 525,620. Ornamenting; adhesives ; compound transparent sheets; printing processes. HUSZLAR, L. Feb. 23, 1939, No. 6094. [Class 39] [Also in Groups V, VIII and XVI] Transparent or translucent colour prints on thin transparent material, preferably cellulose derivatives, are applied to glass windows by means of a colourless adhesive. A colourless lacquer may be applied to the prints to prevent clouding of the glass. An autotype zinc block is made for each colour and a rubber block made from each zinc block is cemented to wood and is applied to the bed of the machine and covered by a rubber sheet. The transparent material is hung up in the air for two hours before printing commences and is rubbed over with a mixture of powdered magnesium and sandstone to ensure absorption of the ink. The temperature of the workroom is kept at 18‹C. to 20‹C. The adhesive comprises gelatine, water, a solution of potassium chlorate, and boric acid.
Patent GB-772799-A (GB)
Title: Cyclopentanophenanthrene derivatives and a method for the preparation thereof
IPC: C07J75/00
Filed: 1953-03-05
Abstract: The invention comprises D 1-allopregnene-11a :21 - diol - 3:20 - dione, D 1,4-pregnadiene - 11a :21-diol-3:20-dione, their 21- and 11:21 - esters and D 4-pregnene - 11a :21 - diol - 3:20 - dione.  The D 1-allopregnene and D 1,4-pregnadiene compounds are prepared from the corresponding allopregnane-11a :21-diol-3:20-dione or appropriate ester by mono- or di-bromination, yielding the 2-bromo- and 2:4-dibromo derivative respectively, which are then dehydrobrominated.  The D 4-pregnene compounds are prepared from the corresponding allopregnanes by dibromination to form the 2:4-bromo derivative, and then treatment with sodium iodide in the presence of a lower aliphatic ketone to yield the corresponding 2-iodo-D 4-pregnene which is finally treated with a deiodinating agent, e.g. chromous chloride, sodium bisulphite, Raney nickel or a tertiary amine.  In examples: (1) allopregnane-11a :21-diol-3:20-dione diacetate is monobrominated in glacial acetic acid to yield 2-bromo-allopregnane-11a :21-diol-3:20-dione diacetate which is then dehydrobrominated with collidine or 2:6-lutidine to D 1-allopregnene - 11a :21 - diol - 3:20 - dione diacetate. Saponification with ethanolic potassium hydroxide gives the parent diol, which is then mono-esterified to the 21-acetate.  (2) 2-Bromoallopregnane - 11a :21 - diol - 3:20 - dione diacetate is treated with semicarbazide hydrochloride or 2:4-dinitrophenylhydrazine and the resulting carbonyl derivative reacted with pyruvic acid to give D 1-allopregnene-11a :21 - diol - 3:20-dione diacetate.  (3) Allopregnane-11a :21-diol-3:20-dione diacetate is dibrominated and the product treated with collidine to give D 1,4-pregnadiene-11a :21-diol-3:20-dione diacetate, which is then saponified and monoesterified to the 21-acetate as in (1).  (4) 2:4-Dibromo-allopregnane-11a :21-diol-3:20-dione diacetate is refluxed with sodium iodide in acetone, and the resulting D 4-pregnen-2-iodo-11a :21-diol-3:20-dione diacetate reduced with collidine or chromous chloride to D 4-pregnene-11a :21-diol-3:20-dione diacetate, which is saponified and reacetylated to the 21-mono-acetate as in (1). Specifications 693,991 and 746,953 are referred to.
Patent GB-691253-A (GB)
Title: Improvements in methods of maturing alkali cellulose
IPC: C08B1/08
Filed: 1950-03-13
Abstract: The maturing of alkali cellulose is accelerated by exposing it in finely-divided form to an atmosphere of oxygen at a pressure of at least 4 atmospheres.  In the example, alkali cellulose is disintegrated in a toothed kneader and compressed in a container. The container is then sealed and filled with oxygen at 15 atmospheres pressure.  The container is maintained at 40 DEG  C. for 2 3/4 hours, with occasional shaking, after which time the alkali cellulose is fully matured, as measured by the cuprammonium fluidity test.  The product is suitable for preparing viscose for rayon manufacture.
Patent GB-1399342-A (GB)
Title: Domestic baths
IPC: A47K3/022
Filed: 1971-03-08
Abstract: 1399342 Domestic baths E P FRANKLIN 8 June 1972 [8 March 1971] 6245/71 Heading A4N A domestic bath has a side wall provided with a plurality of steps 1 projecting inwardly thereon, the steps 1 being at different heights to one another above the bottom wall and all being below the peripheral rim 2 whereby a user sitting in the bath can rest his foot on any selected one of the steps 1 so that a bandage or plaster casing on the leg of that foot can be supported above the water in the bath. The upper surfaces of the steps 1 may be corrugated to prevent foot slippage and the bottom wall may have a recess 3 to prevent a user slipping when seated to take a bath or when standing to take a shower with the aid of a shower enclosure removably supported by the rim 2. An entrance of such an enclosure may be closable by a curtain which can be rolled upwardly onto a spring-loaded spool located horizontally above the entrance, the ends of a rod fitted to the bottom of the curtain being engageable with catches at the bottom of the entrance. The rim 2 may have depressions for receiving soap and a sponge.
Patent GB-1010653-A (GB)
Title: Improvements relating to nuclear reactors
Inventor: WEBB JOHN
IPC: G21C19/16
Filed: 1961-02-21
Abstract: 1,010,653. Reactors. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Feb. 12, 1962 [Feb. 21, 1961], No. 6271/61. Heading G6C. In a nuclear reactor fuel element manipulating device, a plug, mounted in an access hole of the reactor upper horizontal shield, supports the element manipulating device. The latter permits the removal of an element from the core and the placing of it in a receptacle within the main body of coolant and beneath the shield. Subsequently, the plug together with the fuel element is lifted from the access hole into a movable transit flank on the shield upper surface. As shown, the plug 33, seated in the access hole 22 of the shield 25, supports the control members 30, 31, 32, the shroud 27 and container 28. The device is first located by 29a and then the grab 26 is lowered, by 31, to engage the fuel 23 which is then raised into the shroud 27 which is in its lower position above 23. After further raising 27 and 47 the receptacle 28 is moved into alignment with 27, by rod 32, and fuel element lowered into it. The complete plug assembly together with the element is then withdrawn vertically into a transit flask.
Patent GB-633331-A (GB)
Title: An improved stapling device
IPC: B25C5/00
Filed: 1948-02-28
Abstract: 633,331. Stapling tools. SHARP, D., DEUTSCH, H., and TAKAMERS, Ltd. Feb. 28,1948, No. 6295. [Class 89 (iii)] A stapling tool of the hammer type comprises a tubular handle a within which a stick of staples g is positioned by pressed-in shoulders f and, if desired, by a U-shaped guide h. The hammer member c is pivoted to the handle at d and is raised by a spring- controlled pivoted lever k carrying a roller bearing on the handle. According to the Provisional Specification, the lever k is pivoted to the handle and bears by a notched end against the hammer member.
Patent GB-394624-A (GB)
Title: Improvements in oars for propelling boats and the like
IPC: B63H16/10
Filed: 1933-03-02
Abstract: 394,624. Bow-facing oars. PERR•E, P. L. A., 143, Rue Legendre, Paris. March 2, 1933, No. 6338. Convention date, March 15, 1932. [Class 114.] In a bow-facing oar in addition to the two parts 1, 2 being connected by spur quadrants a linkwork is also used which embodies the Peaucellier form. The two parts of the oar 1, 2 are linked by a pin joint 3 and each carries a sliding sleeve 6b, 6d having two diametrically opposed trunnions which act as pivotal points 6a, 6<1>a, 6c, 6<1>c of the levers 6 forming a rhombus section of a Peaucellier linkwork. The pivotal connections 7a of these links are cross connected by levers 7, which are mounted on a pivot pin coaxial with the pivot 3. The trunnions 6c, 6<1>c are connected together by two rods 8 which keep them a constant distance apart. On the upper and lower walls of the casing 11 are spindles 10 serving as pivot points for both sets of pinions 9 each of which has an eye engaging a trunnion 6a, 6<1>a. The casing 11 is provided with bearings 12 which permit the suspension of the oar on the rowlock of the boat. When desired the two parts may be fixedly coupled so that the oar can be used in the usual manner.
Patent GB-236491-A (GB)
Title: Improvement in rotary bar-cutting shears
IPC: B23D21/00
Filed: 1925-03-09
Abstract: 236,491. Lixon, M. March 9, 1925. Shearing.-A portable apertured cutter cutter machine is made reversible so that one cutting edge may be used when the other is worn. On a boss 5 of a base 1 is mounted bv rollers 9 a member 2 with actuating handle 2<1>. To the parts 5, 2 respectively are secured, bv screws 11, apertured disc cutters each with holes 15, 16 of different diameters on either side of the axis of the boss. A bridge piece 8, retaining the member 2 in position is secured to the base by bolts 12, and is spaced from it by sleeves 18. One of these latter carries a lug 19 provided with a screw forming a stop for the handle in an inoperative position. When the cutting edges on one side of the holes 15, 16 are worn, the bridge piece 8 is secured in a reversed position and the stop allows the machine to be actuated in the reverse direction.
Patent GB-1374549-A (GB)
Title: Fluid storage container
IPC: F17B1/00
Filed: 1973-02-09
Abstract: 1374549 Gas holders of variable capacity GENERAL AMERICAN TRANSPORTATIONCORP 9 Feb 1973 [16 Feb 1972] 6547/73 Heading F4X A cylindrical fluid storage tank 100 incorporates a flexible impervious seal 145 connected at one end 147 to the tank side wall 101 and at the other end 146 to the periphery of a piston 135 vertically movable within the tank. A counterweight mechanism 160 including a counterweight 165 connected to the piston 135 through three cables 180 is provided for counterbalancing the weight of the piston. The counterweight 165 slides within a guide 170 the front wall 171 of which has an elongated slot 175 receiving a level indicator 176 fixedly connected to the counterweight 165. Fluid to be stored, e.g. petrochemical vapour, enters the tank through an inlet-outlet pipe 130 which is provided with an upstanding stack 131 having a vent structure 132. Any vapour condensing within the tank due to changes of temperature or pressure can be removed therefrom via an outlet 120.
Patent GB-792182-A (GB)
Title: Production of alumina
IPC: C10G45/28
Filed: 1956-03-02
Abstract: An alumina catalyst support is prepared by hydrolysis of an aluminium alcoholate solution in water containing beta alumina trihydrate and heating and calcining the product at 250 DEG  to 1250 DEG  F.  The water for the hydrolysis contains 0.1 to 1.0 weight per cent of the beta alumina and is present in an amount of 1-10 volumes per volume of alcoholate solution, and the hydrolysis takes place at 40-200 DEG F.  The hydrolysing solution may be prepared by adding beta alumina trihydrate (dried at about 250 DEG  F. or undried filter cake) to water, or water previously used for seeded hydrolysis may be used alone or together with fresh water. If desired, 1.8 to 3.4 weight per cent of ammonia may be added to the hydrolysing medium.  The drying and/or calcination may take place before or after the addition of the catalytic component. Specified catalytic components are molybdenum oxide, vanadium pentoxide, tungsten oxide, chromium oxide, calcium molybdate, cobalt molybdate, mixtures of cobalt and molybdenum oxides and more especially palladium and platinum.  In the case of platinum, solutions of chloroplatinic acid, potassium platinum chloride, tetramino platino chloride, potassium platino-nitrite, dichloro diamino platinum, ammonium platino-nitrite, and dinitrito-diamino - platinum.  After impregnation-and drying and/or calcining to eta alumina if such have not yet been carried out-the catalyst is reduced, e.g. by hydrogen.  Specified alcohols used in the formation of the alcoholate are those having 2-8 carbon atoms, and higher alcohols liquid at the reaction temperature.  Mixtures of alcohols may be used.  A hydrocarbon, such as a petroleum distillate of boiling point 200-500 DEG  F., heptane, octane, toluene or xylene, is preferably used when a water-insoluble alcohol is employed.
Patent GB-151662-A (GB)
Title: Improvements in sound detection and apparatus therefor
IPC: G01S1/72
Filed: 1919-03-17
Abstract: 151,662. Burgess, J. A., and Hutchings, G. B. March 17, 1919. Detecting subaqueous sounds.-Sound and like vibrations, particularly subaqueous noises such as those due to a submarine or other vessel, are detected by means of a body of small size compared with the half-wave length of the sound to be detected so that it is wholly immersed alterr.ately in compression and rarefaction and undergoes deformaticns such as volume changes, means being provided to indicate these changes. As shown, the body consists of a hollow rubber ball 13 communicating through a duct 14 with the interior of a rigid air reservoir 11. A lever 16 has a blade 15 extending into the duct so that the lever is oscillated by air movement through the duct due to the volume changes of the ball. The lever carries a carbon contact 31 co-operating with fixed contacts 17, 18 forming a microphone. The duct may be closed at will by gates 33 operated from a distance by an electro-magnet 35. Tubes 39, 41 are provided communicating with the reservoir 11 and ball 13, and with a reservoir of compressed air, not shown, so that internal pressures may be adjusted at will for example to counterbalance water pressure due to depth of submersion of the device. The ball 13 mav be enclosed in a Helmholtz resonating chamber to which the water may have access, or which may be closed by a diaphragm. The whole device may be enclosed in a protective grating or in a sound-insulating cover allowing access of sound only to the mouth of the resonator. In use, the apparatus is suspended from the detecting-vessel by a tube through which the electric leads and air tubes pass, and surrounded by a soundinsulating jacket. Fig. 9 shows six detectors 13, each with its resonator 23, enclosed in a common sound-insulating chamber, and connected through corresponding relays or amplifiers 28 (one shown) with galvanometers 29. The resonators 23 are tuned to different frequencies, so that by noting which galvanometer is affected, the character of the detected source of sound may be inferred. Modified arrangements of microphone contacts and lever are described, in one of which, Fig. 6, the blade 15 is replaced by a conical valve 54 carried by the lever 16 and itself having an oppositely disposed auxiliary valve 59. A modified form of apparatus is also described in which a cylinder is divided into two compartments communicating through a duct, the larger compartment replacing the reservoir 11 and the smaller, which is closed by a diaphragm or piston, replacing the ball 13. Reference has been directed by the Comptroller to Specifications 7265/87, 21447/91, and 13287/02.
Patent GB-1401862-A (GB)
Title: Oral implant
IPC: A61C8/00
Filed: 1972-05-19
Abstract: 1401862 Dental prosthesis ORATRONICS INC 19 May 1972 [2 Aug 1971] 06638/74 Divided out of 1401861 Heading A5R The disclosure is substantially identical with that in Specification 1401861 but the claims are directed to an artificial tooth support comprising a blade portion 12 (Figs 2 and 6) having a sharp edge or end with vent openings 20 for bone regeneration and support portion 14 connected thereto, characterised by the presence of anchoring teeth 34 on opposite sides of the blade portion and extending parallel to the sharp edge 18 of the blade. The teeth may be of acute or obtuse form (Figs 9-11, not shown) and may be in staggered relation (as shown in Fig 6) or symetrically disposed (Fig 8, not shown).