baber/WOPTO huggingface dataset:
Patent GB-777570-A (GB)
Title: Improvements in thermopropulsive ducts especially for aircraft
IPC: F02C7/042
Filed: 1953-12-31
Abstract: 777,570. Boundary layer control. LEDUC, R. Dec. 31, 1953 [Dec. 31, 1952], No. 36361/53. Class 4. [Also in Group XXVI] A ram jet comprising in the duct wall upstream of the heat receiving zone slot like passages inclined at an acute angle to the duct wall for bleeding off a layer of air next the inner surface of the ram jet considerably thicker than the boundary layer and discharging this air in the direction of the external air flow and means for varying the effective cross section of the passages, has the passages defined by one or a cascade of aerofoil like vanes arranged so that under prescribed conditions of operation, i.e., subsonic or supersonic, as the case may be, the pressure acting on the extrados of the vanes downstream of the passage throats nowhere exceeds the static pressure at the entry of the duet. A ramjet a, Fig. 1, has between its inlet and the burner b a number of openings in which are mounted a number of vanes c. The size and spacing of the vanes are chosen so that the layer of air d which is discharged through the vanes is thicker than the boundary layer. The bleeding off of this layer of air reduces the effective inlet area of the duct from Wo to W<SP>1</SP>.o When the flow is subsonic the vanes may be of aerofoil section and form convergent passages. When the flow is supersonic, the vanes may be as shown in Fig. 3 in which the backs of the vanes are relieved to cause an abrupt increase of the passage area downstream of the throats 5b, 6b so that the pressure p on the backs of the vanes is never more than the static pressure at the inlet end of the duct. In a modification, the vanes are shaped to form convergent-divergent passages. The quantity of air bled off may be varied by pivoting the vanes and connecting the vanes to an operating rod actuated manually or by a servomotor controlled by a pressure in the duct or by the pilot's throttle lever. In a further modification, Fig. 7, the outlet of the vanes 3<SP>1</SP> is covered by a slidable plate 9<SP>1</SP>. The plate 9<SP>1</SP> is curved at its outer edges to form races for ball or roller bearings 10. The complementary races are formed by members 11 fixed to the outer face of the duct.
Patent GB-958509-A (GB)
Title: Method and apparatus for measuring the permeability of terrain at varying levels
Inventor: CAMBEFORT HENRI
IPC: E21B49/00
Filed: 1960-10-24
Abstract: 958,509. Testing physical properties of soil; measuring fluid flow. SOLETANCHE. Oct.24, 1960, No. 36407/60. Headings G1R and G1S. [Also in Division E1] The permeability of the earth is measured by establishing a borehole of constant cross-section in the ground with a fluid-premeable lining permitting the passage of fluid throughout its entire length, setting up a constant flow of fluid through a borehole and measuring the velocity of the fluid at various levels. A tube 2, having holes 3 in its wall, is inserted into the ground inside a casing 1. The tube 2 is surrounded by three layers of fabric, e.g. nylon fabric, and the space between the outer layer and the container 1 is filled with gravel 8. The casing 1 is then removed. A pump then pumps fluid out of the hole at a constant rate of flow and the velocity of the fluid is measured at various depths by a propeller-type flow meter 10 in which the propeller rotates in front of two electrodes periodically varying the electrical field between these electrodes. These variations set up electrical pulses which are counted. The permeability of the ground between two levels is a function of the velocity difference at the two levels. It is stated that the fluid may be injected into the hole instead of being pumped out.
Patent GB-417044-A (GB)
Title: Periodical absorption refrigerating apparatus
IPC: F25B35/04
Filed: 1932-12-23
Abstract: 417,044. Refrigerating. NORMELLI, W. B., 11, Kaiserdamm, Charlottenburg, Berlin. Dec. 23, 1932, No. 36439. [Class 29.] Absorption systems.-The generator - absorber of a reversing system employing a solid absorbent such as calcium chloride or strontium bromide, with ammonia or an amine as refrigerant, is charged with absorbent, either free of refrigerant or with only a portion, e.g. 20-28 per cent of the total working amount of refrigerant absorbed therein, and in such quantity that after it has absorbed the full amount of refrigerant it becomes compressed in the generator-absorber, but not to such an extent as to be impervious to the refrigerant vapour during operation. Preferably, the absorbent occupies the whole space of the generator-absorber under all conditions. Aluminium nitride, calcium oxide or other drying agent may be added to the absorbent to remove traces of moisture, and in the case of absorbents such as zinc chloride which are liable to become liquid, kieselguhr or calcium chloride may be added to maintain the absorbent in the solid form. Heat-conducting iron parts of the generator-absorber may be coated with copper, enamel or other substance inert to the refrigerant. The system may be air-cooled. The generator-absorber may be divided by apertured baffles 10, Fig. 2, and the vessel may be shaken while the charge is introduced through an end opening 6. When charged the end space 4 may be filled with aluminium wool &c. to prevent displacement of the absorbent, and the opening 6 is then sealed. In the vertical generator-absorber 21, Fig. 3, the absorbent in a molten condition is poured into the uppermost compartment and overflows through raised openings 20 from one tray 25 to the next below. The absorbent is saturated with refrigerant after the filling operation and swells up to occupy the spaces in the vessel.
Patent GB-409256-A (GB)
Title: Improvements in and relating to elastic fluid generators
IPC: F22B3/02
Filed: 1933-12-28
Abstract: 409,256. Mercury boilers. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Coulson, B. P. ; 11, North Church Street, Schenectady, New York, U.S.A.) Dec. 28, 1933, No. 36487. Convention date, Dec. 29, 1932. [Class 122 (iii).] Comprises improvements in the heating and circulating tubes of mercury-vapour generators of the kind described in Specification 378,218. The tube 16 is welded at 18 to the drum 10 and is provided with a core made by connecting two parts 19, 20 to provide an internal passage 23 for the liquid, and an external annular passage 24 for the vapour. The hermetically sealed space of the core is filled with a gas such as Toluol or Methane which has a heat conductivity less than that of air, and may be readily detected in the case of leakage in the boiler-drum or elsewhere. The baffle 12 carries a tube 25 which is held against longitudinal movement by a projection 27 and enters a bore in the core. A sleeve 28 is welded to the upper part 29 of the core and provides a small annular space which acts as a hydraulic seal to prevent access of the vapour to the liquid. Spacing blocks are provided between the core and the tube, and knobs 13, 15 are provided between the baffle plate and the filler block 14 and drum 10.
Patent GB-1471651-A (GB)
Title: Railway vehicle primary suspensions
IPC: B61F5/30
Filed: 1973-08-01
Abstract: 1471651 Axle box mountings DUNLOP Ltd 23 July 1974 [1 Aug 1973] 36507/73 Heading B7L A railway vehicle includes a downwardly inclined pair of longitudinally opposed springs 9 of elastomeric material each mounted at their lower end upon an axle box 1 supporting an axle set and at their other end to the vehicle body wherein the axis of the axle set is located above the plane of the resultant longitudinal stiffness Kx of the suspension.
Patent GB-1411360-A (GB)
Title: Compacotrs
IPC: B30B9/30
Filed: 1972-09-26
Abstract: 1411360 Refuse compactors HOBART CORP 26 Sept 1972 [12 Oct 1971] 36662/74 Divided out of 1411289 Heading B8C A compactor, e.g. for domestic refuse, and comprising a compactor housing 10, a compaction receptacle (34), Fig. 1, means, such as sliders 42, 44, mounting the receptacle for movement between a compacting position in the housing and non-compacting positions displaced from said compacting position, a compacting ram 12, and means 14, 16 mounting the ram within the housing for movement into, and out of, the receptacle when the receptacle is in the compacting position, is characterized in that a material receiving compartment 52 is located in the housing in free communication with the receptacle in non-compacting positions thereof, communication between the compartment and the receptacle being restricted when the receptacle is in the compacting position. As shown, the ram 12 is driven for vertical reciprocal movement by three sprockets 16 carried by the ram 12 and threadedly engaged on three stationary screw-jacks 14, a reversible motor 18, mounted within the ram 12, rotating the sprockets 16 by means of a timing belt 24 and pulleys 22, 26, and a chain and sprocket mechanism 32, 30. The compartment 52 is formed by a forward wall 50, a top wall of the housing 10, a hingedly mounted small door 48, and a drainage shelf 46 on the drawer when the latter is in its compacting position. In a modification, Fig. 2, not shown, the door (54) which provides access to the compartment (52), is hingedly connected, along its lower edge, to the upper edge of the front wall of the drawer (34). In a further modification, Fig. 3, not shown, the door (66) is hinged to the housing (56) and the compartment (68) is formed by the front wall (60) and the top and end wall (50) of the housing (56), the compacting position of the drawer (58) being obtained by pushing it further into the housing until its front wall (70) abuts the wall (50). As an alternative the door may be hinged to the upper edge of the front wall (60) of the drawer.
Patent GB-449477-A (GB)
Title: Improvements in the manufacture and production of vat dyestuffs of the anthraquinone series
IPC: C09B6/00
Filed: 1934-12-24
Abstract: Anthraquinone vat dyes are prepared by condensing aminoanthraquinones or their derivatives with monophenyldichlor-1.3.5-triazines which are substituted in the phenyl nucleus by halogen atoms or alkoxy groups. Suitable triazines may be prepared according to Specifications 436,657 and 439,380 and include 2-chlorphenyl-, 2-p-bromophenyl-, 2-methoxyphenyl, 2-ethoxyphenyl- and 2-(2<1>.5<1>-dichlorphenyl)-4.6-dichloro-1.3.5-triazines; particularly valuable dyes are derived from those triazines containing a p-halogen- or p-methoxyphenyl group attached to the nucleus.  In examples: (1) 2-p-methoxyphenyl - 4 . 6 - dichloro - 1 . 3 . 5 - triazine is condensed with 1- or 2-aminoanthraquinones, 1 - amino - 4 - methoxyanthraquinone, 1 - amino - 4 - benzoylaminoanthraquinone, 1 - amino-5-benzoylaminoanthraquinone, 1-amino-5 - p - chlorbenzoylaminoanthraquinone, 1 - amino - 5 - m - methoxybenzoylaminoanthraquinone, 1 - amino - 5 - naphthoylaminoanthraquinone or those aminoaroylaminoanthraquinones wherein the aroyl radicle is the radicle of a quinoline carboxylic acid, diphenylcarboxylic acid, anthraquinone carboxylic acid, anthraquinone benzacridone carboxylic acid, anthraquinone naphthacridone carboxylic acid, anthrapyridone carboxylic acid, anthrapyrimidone carboxylic acid, anthraquinonethioxanthone carboxylic acid or thiazolanthrone carboxylic acid; the corresponding o- or m-methoxyphenyl- and o-, m- or p-ethoxyphenyl-4 . 6 - dichloro - 1 . 3 . 5 - triazines may be used instead; (2) 2-p-chlorphenyl-4.6-dichloro-1.3.5-triazine is condensed with 1- or 2-aminoanthraquinones, 1-amino-4-benzoylamino- and/or 1-amino - 5 - benzoylaminoanthraquinones, 1 - amino - 4 - p - chlorbenzoylaminoanthraquinone, 1 - amino - 4 - o - tolylaminoanthraquinone, 1 - amino - 4 - p - ethoxybenzoylaminoanthraquinone, 1 - amino - 4 - naphthoylaminoanthraquinone or aminoaroylaminoanthraquinones wherein the aroyl radicle is that of a quinoline carboxylic acid, diphenylcarboxylic acid, anthraquinone carboxylic acid, anthraquinone benzacridone carboxylic acid, anthraquinone naphthacridone carboxylic acid, anthrapyridone carboxylic acid, anthrapyrimidone carboxylic acid, anthraquinonethioxanthone carboxylic acid or thiazolanthrone carboxylic acid; other starting materials specified as suitable are 1-amino-4-methoxyanthraquinone, 1 - amino - 3 - acylaminoanthraquinones, 1 - amino - 8 - acylaminoanthraquinones, 1 - amino - 5 . 8 - diacylaminoanthraquinones and aminoaroylaminoanthraquinones wherein the aroyl radicle is that of a pyridinoanthraquinone carboxylic acid, pyrazolanthrone carboxylic acid, selenazolanthrone carboxylic acid, or benzanthrone carboxylic acid.  The products dye yellow to violet shades.  British Specifications 307,947, [Class 2 (iii)], 350,575, and 372,123, German Specification 551,884, and U.S.A. Specification 1,897,428 also are referred to.
Patent GB-1417577-A (GB)
Title: Plugs for locking devices
IPC: E05B29/06
Filed: 1972-08-09
Abstract: 1417577 Locks WILMOT-BREEDEN LTD 7 Aug 1973 [9 Aug 1972] 37130/72 Heading E2A A plug for a key operated device comprises a longitudinal key receiving slot and transverse tumbler receiving slots spaced along the key slot in two rows one on each side of the key slot which has on at least one side a key guide which is discontinuous being interrupted in the region of some or all of the tumbler slots traversing the key guide. The plug comprises a body 1 having the tumbler receiving slots 4a, 4b on which engage the tumblers 2 having narrow end portions 13 which are urged outwardly of the plug by springs 17. The key slot 3 has a key guide 8 which is discontinuous in the region of the slots, Fig. 6 or in the region of two pairs of slots, Fig. 11. One slot 22 has a non locking ward which is spring urged to engage in a slot in the body and in a surrounding cylinder to anchor the plug in the cylinder and limit turning of the plug relatively to the cylinder. The body has offset central walls 5 to guide the tumblers, the walls terminating short of the key guide to cause interruption therein. The body is provided with stop faces 20 as are also the two ends of the key slot to provide for different depths of insertion with a double entry key. The tumblers may be displaced in the same direction.
Patent GB-818747-A (GB)
Title: Improvements in the removal of arsenic and antimony from roasted sulphidic iron ores, especially roasted iron pyrites, and in the halogenation of the non-ferrous metals contained in these roasted ores
IPC: C22B1/08
Filed: 1957-11-29
Abstract: Roasted sulphidic iron ores containing antimony and arsenic are reacted at above 500 DEG  C. with phosgene, a sulphur halogen compound (S2Cl2, SCl2), a sulphur oxyhalogen compound (SOCl2, SO2Cl2), with a sulphur fluorine compound corresponding to said sulphur chlorine compounds, with the thermal decomposition products thereof (CO and Cl2) or with substances which react together in the vapour phase to form said compounds (SO2 and halogen, sulphur vapour and halogen), all of these compounds or mixtures being diluted for use with such an amount of an inert gas that the iron in the ore remains substantially unattacked.  The reaction may be performed in a multishelf, rotary or fluidized furnace.  In the examples, a roasted iron pyrites ore containing arsenic, antimony, copper, lead and cobalt was reacted at 800 DEG  C. in a rotary tubular furnace provided with shelves parallel to the axis, with sulphur chloride, sulphuryl chloride, thionyl fluoride and phosgene respectively, said gases being diluted in ratios between 1:5 up to 1:50 with nitrogen. The non-ferrous metals were present only in very small quantities after the product was leached with 4 per cent hydrochloric acid. Specification 749,078 is referred to.
Patent GB-1019945-A (GB)
Title: Liquid reservoirs of hydraulic master cylinders
Inventor: REYNOLDS DESMOND HENRY JAMES
IPC: B60T11/26
Filed: 1961-10-18
Abstract: 1,019,945. Hydraulic brakes; brake indicators. GIRLING Ltd. Oct. 8, 1962 [Oct. 18, 1961], No. 37316/61. Headings F2E and F2F. In order to increase the effective capacity of a reservoir of an hydraulic master cylinder for an hydraulic braking system, a hollow extension piece 12, of which at least part of the wall is transparent or translucent and which is formed at its bottom end with an outwardly projecting annular radial flange 13 adapted to seat against the upper end of the reservoir 11 against which it is clamped by a ring 15 fitting over the flange and screwed on to the reservoir. The upper part of the extrusion piece is provided with a vented closure cap 17.
Patent GB-341648-A (GB)
Title: Change speed gear mechanism
IPC: F16H3/16
Filed: 1929-12-05
Abstract: 341,648. Variable speed gearing. LLOYD, H. J. and LAYCOCK ENGINEERING CO., Ltd., Victoria Works, Millhouses, Sheffield. Dec. 5, 1929, No. 37320. [Class 80 (ii).] ] A four-speed gear box of the kind having coaxial driving and driven shafts 3, 2 adapted to be coupled by a dog clutch 19, 20 to give a direct drive has a gear wheel 10 of a constantly-meshed third speed train mounted on the driving shaft adjacent a bearing 4 and between a pinion 5 gearing with a pinion 6 on a layshaft 7 and the dog-clutch member 20 and has a gear wheel 21 splined to the driven shaft and adapted to be moved into mesh with a gear wheel 23 of the first speed train fixed to the layshaft or to clutch a loose gear 22 to the driven shaft. The gear 22 which is arranged adjacent a bearing 27 is in permanent engagement with a pinion 24 on the layshaft and provides the second gear. The gear wheel 10 revolves on a bush 9 carried by an enlarged part 8 of the driving shaft and is held against axial movement by a thrust washer 11 and a shoulder 14. The movable clutch member 18 is splined to the driven shaft and is provided with internal teeth 19 adapted to be moved into engagement either with external teeth 13 on a flange 12 formed on the gear wheel 10 or with similar teeth 20 on the shaft 3. The driven shaft has a reduced part 2 engaging a socket in the driving shaft extending through the plane of the bearing 4. The constantly-meshed gears may be of the single or double helical type and the clutch dogs may have the form of gear teeth. According to the Provisional Specification both first and second gears may be of the sliding pinion type.
Patent GB-1026636-A (GB)
Title: Process for preparing í¸-steroid compounds
IPC: C07J75/00
Filed: 1964-09-14
Abstract: The invention comprises a process for dehydrosulphonating a steroid having a 12-sulphonate group to form a D 11(12)-steroid by treatment with an alkali or alkaline-earth metal alkoxide in a dipolar aprotic solvent.  12-Sulphonate starting materials are prepared by sulphonation of the corresponding 12-hydroxy-compounds.  3a -Acetoxy-D 11-methyl cholanate is prepared by successive treatment of 3a -hydroxy-D 11-cholenic acid with diazomethane and acetic anhydride.
Patent GB-375061-A (GB)
Abstract: 375,061. Calculating -apparatus. LOONEY, T. C., 31, Torriano Avenue, London. March 5, 1932, No. 16541/31. [Class 106 (i).] A differentially set and operated adding and subtracting apparatus comprises a numbered ring C adapted to revolve beneath an apertured and numbered cover-plate A and provided with holes for the reception of the operating pegs D. These pegs are also numbered for checking purposes and each has a hole at the top into which any other peg may be inserted. The revolutions of the ring are counted on a hundreds disc.
Patent GB-1432849-A (GB)
Title: Imitation leather material
IPC: D06N3/14
Filed: 1973-08-09
Abstract: 1432849 Coated flexible sheet materials AKZO NV 9 Aug 1973 [11 Aug 1972] 37795/ 73 Heading B2E An imitation leather comprises a fibre fleece impregnated with polyurethane binder, a polyurethane covering layer and, situated between the fibre fleece and the covering layer, an intermediate layer distributed throughout which are 3 to 30% by weight (based on the polyurethane) of discrete particles which have a volume of 2 Î 10<SP>-2</SP> to 0.5 times 10<SP>-9</SP> mm<SP>3</SP>, at least 85% of the particles measuring not more than 0.3 mm in the direction of greatest length. The particles preferably have a volume of between 0.5 Î 10<SP>-3</SP> and 2 Î 10<SP>-6</SP> mm<SP>3</SP> and they may be of various shapes and preferably have a density of 0.9 to 1.6 g/cm<SP>3</SP>. They may be of polyethylene, polypropylene, polyamides, polyesters, cellulose derivatives, barium sulphate, calcium carbonate, silicon dioxide, or aluminium hydroxide. Particularly preferred is fibre dust, especially of polyamide and/or cellulose fibres, obtained as abrasion dust when impregnated fibre fleeces are buffed. The dust may be further ground before use. The polyurethanes used for impregnating, for the intermediate layer and for the covering layer may be identical or different.
Patent GB-640249-A (GB)
Title: Pharmacist's weights
IPC: G01G21/26
Filed: 1946-12-24
Abstract: 640,249. Pharmacists' weights. YAGLE, L. W. Dec. 24, 1946, No. 37876. [A Specification was laid open to inspection under Sect. 91 of the Acts, Feb. 4, 1948.] [Class 81(i)] A weight holder contains a plurality of weights for use by pharmacists whereby percentage solutions may be prepared by direct weighing, the unit of which weight corresponds to 1 per cent of the weight of a fluid drachm of water, the other weights being multiples thereof. In the weight holder shown. a panel bearing a chart facilitates the preparation of aqueous percentage solutions by showing the weight required for preparing a wide range of solutions.
Patent GB-923739-A (GB)
Title: Pharmaceutical granules comprising tetracycline and novobiocin
IPC: A61K31/65
Filed: 1959-11-09
Abstract: A dry, storage-stable granulation comprises finely divided tetracycline free base, mono-calcium novobiocin, a sugar, sorbitan trioleate, potassium metaphosphate and suitable sweetening and flavouring agents.  Optional ingredients include tribasic potassium phosphate as a buffering agent and a sulphur containing reducing agent e.g. sodium metabisulphite, sodium bisulphite or sodium formaldehyde sulphoxylate.  Specified sugars are sucrose, glucose and fructose.  The granulations may be prepared by blending the ingredients which are in a suitably fine state of division, wetting the mixture with water, forcing through a screen and drying.  The granules may be converted into an acceptable liquid dosage form for oral administration by the addition of water.
Patent GB-1216931-A (GB)
Title: Process for modifying glass and other materials
IPC: C03C21/00
Filed: 1968-04-29
Abstract: 1,216,931. Treating glass. GLAVERBEL. 29 April, 1968 [26 March, 1968], No. 37971/68. Addition to 1,212,881. Heading C1M. In a process for modifying a property of a body of glass or glass-ceramic, the body is contacted with a gaseous substance ionized or maintained in an ionized state in the immediate vicinity of the body by one or more flames without the action of an electrical discharge. A glass sheet 50 is zone toughened by being placed in a container 51 within a frame formed by a tube 52. The tube has a plurality of apertures 53a all round its periphery and air and potassium nitrate vapour at 180 C. are fed into the tube and enter the chamber through the apertures 53a. The glass sheet is maintained at a temperature of 400 C. Two burner tubes 57a, 57b are positioned on opposite sides of the sheet-adjacent its lower end. A further burner 63 having orifices for upwardly 64 and downwardly 65 directed flames is located on one side only of the sheet just above a central portion thereof. A cooler 60 is located opposite and adjacent the central portion. A pair of electrodes 56a, 56b are also located in the container 51 for controlling the rate of ion exchange, cooling boxes 66, 67 being affixed to the upper ends of the electrodes. The potassium nitrate vapour is only slightly ionized on entering the treatment container but becomes strongly ionized on entering the areas of the flames. The coolers 60, 66, 67 cause de-ionization of the gases in their immediate vicinity and so respectively form an untoughened central zone and prevent shortcircuiting across the upper edge of the sheet.