baber/WOPTO huggingface dataset:
Patent GB-768240-A (GB)
Title: Improvements in or relating to liquid pumps in gas-turbine engines
Inventor: ARMER CYRIL
IPC: F01D25/20
Filed: 1953-12-21
Abstract: 768,240. Centrifugal pumps. ROLLS ROYCE, Ltd. Nov. 15, 1954 [Dec. 21, 1953; Feb. 16, 1954], Nos. 35548/53 and 4586/54. Class 110 (1). [Also in Group XXXIV] A pump arranged to scavenge oil from a bearing of a gas turbine engine and to deliver it against a resistance comprises a vaneless impeller in the form of a circular disc, collar or radial flange, the impeller rotating within an encircling structure having a groove which receives the periphery of the impeller with a small clearance relative to the bottom of the groove, and at least one outlet passage extending from the bottom of the groove. A sleeve-like member 42 is interposed between a bearing 41 and the nut 43 which clamps the inner race of the bearing against a shoulder 40a on the vertical shaft 40 of an aircraft gas turbine engine of the type having a substantially vertical axis. An upper labyrinth seal 47 and the outer race of the bearing are attached to stationary structure 45 by studs 46. A lower labyrinth seal 50 is carried by a bearing housing 48. The member 42 has a radial flange 51, the periphery of which has a small clearance from the wall of the housing 48, and a cylindrical extension 52 of the flange depends into an annular recess 53. The member 42 acts as a centrifugal oil thrower to assist in scavenging the oil from the bearing 41, the oil draining on to the upper surface of the flange 51 being flung outwards on to the wall of the housing 48, which forms the bottom surface of a radial groove, and discharged through one or more passages 54. The latter, which are preferably tangentially disposed, lead to one or more pipes 55 which may lead to a scavenge pump 56. If, however, the oil flow is insufficient to fill the clearance between the flanges 51, 52 and the wall of the housing 48, the oil tends to fill the recess 53. Before it can reach the level of a side wall 50a of the recess 53, the oil is rotated by the axial flange 52 and, as before, discharged through the passages 54. In a modification, applied to an aircraft gas turbine engine having a horizontal shaft, the axial flange is omitted from the oil thrower.
Patent GB-1153544-A (GB)
Title: Copolymers Derived from Vinyl Acetate and Crotonic Acid
Inventor: PASERO REGINE
IPC: A61K8/04
Filed: 1967-08-03
Abstract: 1,153,544. Hair-treating preparations. L'OREAL. 3 Aug., 1967 [3 Aug., 1966], No. 35692/67. Heading A5B. [Also in Divisions C3 and C4] A composition for application to human hair comprises a solution or dispersion of a copolymer consisting of vinyl acetate, crotonic acid and at least one other monomer which is (a) a vinyl ester of formula RCOOCH= CH 2  where R is a linear or branched chain C 10-22  hydrocarbon radical; or (b) an allyl or methallyl ester of formula RCOOCH 2 CR"= CH 2  where R is as before and R" is H or CH 3 . In examples aerosol hair lacquers comprise an alcoholic solution of the copolymer with 2-amino-2-methyl-1-propanol diethyl adipate, perfume, ethyl phthalate, vinylpyrrolidane/vinyl acetate copolymer, 2-amino-2-methyl- 1, 3-propanediol, hexachlorophene, isopropyl laurate and/or isopropyl palmitate together with monofluorotrichloromethane and difluorodichloromethane; hair setting lotions comprise an aqueous alcoholic solution of the copolymer with triethanol-amine, trimethyl cetyl ammonium bromide, silicone oil 2-amino-2- methyl-1, 3-propane-diol, polyvinylpyrrolidone, urea, monoethanolamine and/or', triisopropanolamine.
Patent GB-1492368-A (GB)
Title: Adapters for centrifuge rotors
IPC: B04B5/04
Filed: 1976-08-27
Abstract: 1492368 Supporting test-tubes in centrifuge rotor BECKMAN INSTRUMENTS INC 27 Aug 1976 [15 March 1976] 35695/76 Heading B2P A centrifuge rotor 10 comprises a receptacle 22 within which a plurality of similarlyconfigured adapter plates 26 are stacked, each plate being removable and having at least two holes 28 and the arrangement being such that, when the respective holes of all the plates are in alignment, the receptacle is adapted for receiving a plurality of containers, e.g. test-tubes 24, for samples of material to be centrifuged. The rotor is of the swing- bucket type, each bucket 18 having a receptacle or inner cavity 22 within which the test-tubes 24 are received in a plurality of aligned holes 28 in the adapter plates 26 with the bottoms 50 of the test-tubes resting on a resilient cushion pad 46. The assembly of test-tubes, adapter plates and cushion pad is held within each bucket by a U-shaped retaining bracket 34 which engages in slots 32 in the sides of the plates 26 and in a diametrical slot 56 in the bottom surface of the pad 46, the bracket 34 having hook portions 42 which mate over the top slanted surface 44 of the bucket. In a modification, Fig. 8 (not shown), the bucket cavity 22 is separated into two superposed compartments by a divider plate (62) to receive two sets of sample-carrying test-tubes, the upper face (64) of the divider plate being made of resilient cushioning material.
Patent GB-967455-A (GB)
Title: Improvements in and relating to surgical masks
Inventor: FINNEY WILLIAM
IPC: A41D13/11
Filed: 1960-10-18
Abstract: 967,455. Surgical masks. SOUTHALLS (BIRMINGHAM) Ltd. Dec. 8, 1960 [Oct. 18, 1960], No. 35717/60. Heading A5T. A surgical mask comprises a rectangular sheet 12 of heat sealable paper superimposed on a sheet 14 of more porous stronger paper which has triangular cut-away portions centrally on each side, the longer edges 18, 19 of the heat sealable sheet projecting beyond the corresponding edges of the other sheet, the two sheets being heat sealed together and folded about a line 17 midway between the top and bottom edges, the contacting portions of the heat sealable paper at the folded corners then being heat sealed together whilst the projecting longer edges are folded against the other sheet to enclose fastening means for the mask. An elastic cord is enclosed in the heat sealed folded longer edges, loops of the card projecting from the sheets for passing over the ears when the mask is opened out for use. The heat sealable paper is made from a mixture of thermoplastic and non- thermoplastic fibres, the thermoplastic fibres predominating on one surface. The heat sealable sheet may form either the outer or the inner surface of the mask or the other sheet may be disposed between outer and inner sheets of heat sealable paper. Specification 840,190 is is referred to.
Patent GB-1484583-A (GB)
Title: Chromium-chromium carbide powder method for producing same and article made therefrom
IPC: C23C4/06
Filed: 1974-08-14
Abstract: 1484583 Chromium carbide UNION CARBIDE CORP 14 Aug 1974 [15 Aug 1973] 35735/74 Heading C1A [Also in Division C7] A powder containing in total from 0À2 to 5À4 wt. per cent carbon wherein substantially every particle of said powder comprises free chromium and at least one chromium carbide selected from Cr 23 C 6 , Cr 7 C 3  and Cr 3 C 2 . The carbides may be present on the surface of the chromium in each particle or may form a shell completely surrounding the chromium in each particle or may be dispersed within the chromium in each particle. The powder may be produced by admixing a source of chromium (e.g. commercial chromium powder; chromium oxide or any chromium compound that decomposes on heating with carbon or hydrogen to form chromium) with a source of carbon and may be optionally admixed with water and a binder and formed into briquettes, the mixture so produced may be heated to 1000 to 1400 C. for 1-50 hours under non-oxidizing conditions (e.g. vacuum, hydrocarbon and/or hydrogen atmosphere). The source of carbon may be decolourized carbon, lampblack, powdered graphite, chromium carbide, gaseous hydrocarbon or hydrocarbon/hydrogen gas mixture in which solid carbon is reacted with the hydrogen to produce a hydrocarbon vapour which reacts with the chromium. Alternatively the mixture of chromium and carbon or chromium and chromium carbide may be melted at above 1500 C. and allowed to cool to precipitate out the chromium carbide. In both methods the sinter cube/solidified melt produced may be comminuted to produce the required powder size. The powder may be sprayed using a plasma arc or detonation gun to provide a coating having a multilayer structure of overlapping thin lenticular particles, each particle containing a mixture of chromium and chromium carbide on a metal substrate, e.g. the interior aluminium trackout surface of a rotary combustion engine.
Patent GB-522291-A (GB)
Title: Improvements in air break electric circuit breakers
IPC: H01H9/34
Filed: 1938-12-07
Abstract: 522,291. Arc-rupturing in switches. BRITISH THOMSON-HOUSTON CO.. Ltd.. COX, H: E., and GIBSON, A. C. Dec. 7, 1938, No. 35739. [Class 38 (v)] The arc-shoot of an air-break switch comprises a convergent portion 13 adjacent the contacts 3, 6 and leading to a narrow channel 14 into which the arc is forced by the magnetic arc-horns 17, 18. The wider end of portion 13 is substantially as wide as the contacts and the channel-width is equal to, or less than, one quarter of that maximum width. The arc-horns conform to the shape of the respective ends of the shoot and one or each of them is subdivided into strips of progressively-increasing length, the centre one extending into the channel. The shoot may be of asbestos and formed by assembling two similar casing parts, each being a pre-formed insulating moulding. Specification 522,290 is referred to.
Patent GB-1526119-A (GB)
Title: Induction motors
IPC: H02K9/19
Filed: 1976-08-27
Abstract: 1526119 Induction motors A MULLER 27 Aug 1976 [29 Aug 1975] 35749/76 Heading H2A A liquid-filled variable-speed induction motor includes a pump 10 for circulating the liquid to an external cooling device 18, the pump 10 being driven at a constant speed by a shaft 25 independently of the speed of the motor. In the arrangement shown, a main rotor 4 and an intermediate rotor 23 are mounted on an output shaft 6, and a rotor 24 driving the shaft 25 is positioned inside the rotor 23. A fan 17 cools the device 18.
Patent GB-405443-A (GB)
Title: Improvements in tipping trucks
IPC: B61D9/14
Filed: 1932-12-17
Abstract: 405,443. Tip-wagons; railmay-vehicle undercarriages. DICKSON & MANN, Ltd., Bathville Steel Works, Armadale, and THORNTON, C. R., 78, Hopetoun Street, Bathgate, both in West Lothian. Dec. 17, 1932, No. 35803. [Classes 103 (iv) and 103 (vi).] To permit the tipping of the body 10 of a railway tip-wagon in any direction, the same is supported on a bogie frame 8 which is adapted to rotate about a vertical trunnion 9 on the under carriage 5, the frame 8 being normally clamped to the undercarriage by bolts 12 or like fastenings, but being elevated therefrom by one or more strong springs 11 when the fastenings 12 are released. As shown the undercarriage 5 is constructed in two parts inclined at angle to each other so as to adapt the wagon for use on an inclined track 7. During the tipping movement rockers 22 are arranged to travel on supports 23 on the bogie frame 8, the body 10 being held in its normal position by catches 13 which are released, as the wagon approaches the end of the track 7, by a track stop 21 engaging a pivoted arm 15 associated with a crank 17, vertical spindle 18 passing through the trunnion 9, pivoted bell-crank lever 19, 19a, and spring- returned rod 20. At the point of discharge, the body 10 is almost directly over the terminal wheel 27 of the haulage mechanism, while the end of the haulage rope 28 is connected to one end of a pivoted lever or sprag 30 which automatically under the action of a spring- controlled rod 31 comes into operation to prevent the wagon from running backwards in case of breakage of the rope 28.
Patent GB-1281713-A (GB)
Title: Variable speed mechanism
Inventor: WARNOCK WILLIAM ARTHUR
IPC: F16H63/06
Filed: 1969-07-16
Abstract: 1281713 Variable speed gearing W A WARNOCK 16 July 1969 [16 July 1968] 35897/69 Heading F2D A variable speed gearing comprises two shafts A, B having axes relatively displaceable eccentrically to vary the ratio and including a flexible endless drive member, e.g. chain 25 or 32. The shaft A may be movable eccentrically by mounting in a bell-crank pivotable about a pin 46 under the action of manually adjustable (at 52, 63) screws 50, 64. The shaft A may be between two chain drives D between two coaxial shafts B or be driven by gears 58, 59 from a shaft 17. Each chain 25, 32 may engage teeth of a sprocket 26 fixed to shaft A and pass round freely rotatable heads on pins 28, 29 fixed to a flywheel C, and on pins 34 on arms biased by springs 38 to pivot about pins 36 in the flywheel to tension the chain. It is stated that as the shafts AB move relatively eccentrically from a coaxial position the ratio reduces from direct drive.
Patent GB-1099727-A (GB)
Title: Simplified data-processing system
IPC: G06F9/312
Filed: 1965-08-20
Abstract: 1,099,727. Electric digital calculator. INTERNATIONAL STANDARD ELECTRIC COR PORATION. Aug. 20, 1965 [Aug. 26, 1964], No. 35907/65. Heading G4A. An arrangement for performing logic operations such as INCLUSIVE OR, EXCLUSIVE OR, and AND on corresponding bit position of two binary numbers comprises two registers A0, A4 containing the appropriate numbers and a series of logical circuits EL connected between corresponding bit positions of the register, the logical circuits comprising an input receiving a " 1 " pulse a gate controlled by one of said registers (A0) and an output connected to the other of said registers (A4) in a manner determined by the nature of the logical operation to be performed. In one embodiment performing INCLUSIVE OR the output of the circuit is connected to the SET terminal 5 of the second register A4 and the SET output of the first register controls the gate. If the SET terminal of register A0 contains a " 1 " then the pulse applied to line a41 is transmitted to register A4 and stores a " 1 " in said register. If A0 is set on " 0 " then the gate is closed and register A4 remains in its initial condition either storing " 1 " or " 0." Thus, if there is a " 1 " in either or both registers prior to the operation then a " 1 " is stored in the second register after the operation. A second embodiment (Fig. 4, not shown), illustrates the EXCLUSIVE OR logic circuit and is the same as Fig. 3 except that the connection to register A4 is such that a pulse changes whatever state the register is in, i.e. a " 1 " to a " 0 " and vice versa. Thus a " 0 " in register A0 leaves A4 unchanged but a " 1 " in A0 changes the state of A4. Therefore A4 stores a " 1 " if either register contains " 1 " but stores a " 0 " if both registers contain " 0 " or " 1." Fig. 5 (not shown), illustrates the AND operation. In this case the reset or zero side of A0 control the gate and the connection is to the zero side of A4. Thus, only for a " 1 " in A0 does no resetting signal pass and hence A4 only contains a " 1 " after the operation if both registers contained a " 1 " before the operation.
Patent GB-155834-A (GB)
Title: Improvements in filter presses
IPC: B30B9/12
Filed: 1920-12-24
Abstract: The Specification as open to inspection under Sect. 91 (3) (a) describes the use for dialysis or osmosis of a network medium in which a pulverulent or fine fibrous material has been deposited or gypsum or cement allowed to set, and in which the porosity has been further reduced by impregnation with a solution of aceto- or nitro-cellulose, collodion, india-rubber or the like.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1016209-A (GB)
Title: Straightening machines
IPC: B23D36/00
Filed: 1964-09-03
Abstract: 1,016,209. Straightening tubes. M. VON BUSHE, and T ALTENBRACHT., [trading as KIESERLING & ALBRECHT]. Sept. 3, 1964 [Oct. 24, 1963], No. 36177/64. Heading B3M. Associated with a straightening machine a coil through which passes the metal which is to be or has been straightened, forms the inductance of a resonance circuit the resultant pulses controlling the feed and discharge means. Tubes 4 are moved from a grid 5 to rollers 6. A driving roller 6a is then lowered and the tube 4a fed through a coil 8 to roller straightening means 1. As the leading end of the tube 4a passes through the coil 8 the voltage drop at a series resistance 9 is varied to cause an amplifier 10, e.g. a thyratron, to emit a control pulse to lift the feed roller 6a from the tube 4a as the tube 4a is engaged by the first straighten ing rollers 1a. The control pulse also acts, through a time relay, to cause the next tube to be moved to the rollers 6. When the leading end of the tube 4a enters a second coil 8a a control pulse, through a slow-acting relay, causes a driving roller 11 to be lowered on to the tube 4a to brake it as it passes on to the rollers 12. As the trailing end of the tube 4a leaves the coil 8a a control pulse lifts the roller 11 and causes ejectors to move the tube from the rollers 12 to a grid 13. The coils 8, 8a may operate to reverse the drive of the straightening rollers and the rollers 6a, 11 so that the material to be straightened passes several times back and forward through the straightening rollers before being deposited on the grid 13.
Patent GB-936230-A (GB)
Title: Method for sulphurizing the surface of iron, steel and alloy steels
IPC: C23C8/02
Filed: 1959-10-26
Abstract: Ferrous surfaces are sulphurized by immersion in molten sulphur at a temperature of at least 120 DEG C. after the ferrous surface has been pretreated to increase its meltability.  The pretreatment may be any one of the following processes:-  (1) Immersing in molten sulphur and applying a positive potential of at least 10 V. to the ferrous material.  (2) Electrolitically polishing in an electrolyte of phosphonic acid, gelatine and oxalic acid. p   (3) Chemical cleaning in an aqueous solution consisting of H2SO4, HNO3 and CuSO4.  (4) Cleaning in a molten flux.  (5) Treating with a sulphur containing gas such as H2S or S2Cl2.  (6) Electrolysing in molten sulphur which contains lead or lead sulphide.  (7) Heating the buffed surface in hydrogen at 350 DEG C.  The pretreated material is then immersed in molten sulphur at 120 DEG -445 DEG C.ALSO:Surfaces of iron, steel and alloy steels, e.g. plate, are sulphurized by immersion in molten sulphur at a temperature of at least 120 DEG  C. after the ferrous surface has been pretreated to increase its wettability.  The pretreatment may be any one of the following processes:-  (1) Immersing in molten sulphur and applying a positive potential of at least 10 V to the ferrous material.  (2) Electrolytically polishing in an electrolyte of phosphoric acid, gelatine and oxalic acid at a current density of 30-200 A/dm2.  (3) Chemical cleaning in an aqueous solution consisting of H2SO4, HNO3 and CuSO4.  (4) Cleaning in a molten flux such as 28% NH4Cl and 72% ZnCl2 or 10% borax, 30% BaCl2, 60% CaCl2 in a mixture of two or more of borax, NaCl, BaCl2, CaCl2, KCl or AlCl3.  (5) Treating with a sulphur containing gas such as H2S or S2Cl2.  (6) Electrolysing in molten sulphur which contains lead or lead sulphide at a current density of 2-3 mA/cm2.  (7) Heating the buffed surface in hydrogen at 350 DEG  C.  The pretreated material is then immersed in molten sulphur at 120-445 DEG  C.
Patent GB-855653-A (GB)
Title: Improvements relating to alkaline electric cells
Inventor: CHAPMAN CHRISTOPHER LIONEL CAR
IPC: H01M10/24
Filed: 1955-12-16
Abstract: 855,653. Batteries. YARDNEY INTERNATIONAL CORPORATION. Dec. 13, 1956 [Dec. 16, 1955], No. 36213/55. Class 53 The high initial discharge voltages of an alkaline cell is reduced by incorporating a halide of an alkalic metal or ammonia in the internal discharge path of the cell. The preferred halide is sodium or potassium chloride and it may be incorporated in the electrolyte or the electrodes of the cell. Thus in a silver-zinc cell the electrolyte may be a potassium hydroxide solution, having a specific gravity of 1 À2-1 À4, saturated with sodium or potassium chloride introduced into the cell in its charged or uncharged state. Alternatively an uncharged negative electrode, consisting of a mixture of zinc oxide and the halide in liquid or powder form, may be used. Similarly a charged or uncharged positive electrode, consisting of a mixture of silver oxide or silver with the halide, may be used. When the cell is constructed in its charged state it is subjected to at least one charge/ discharge cycle before general use. According to the Provisional Specification, calcium or magnesium chloride may be incorporated instead of the above halides.
Patent GB-508504-A (GB)
Title: Improvements in excitation control of dynamo electric machines
IPC: H02K23/02
Filed: 1937-12-31
Abstract: 508,504. Exciting dynamo - electric machines. JUHLIN, C. A., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Dec. 31, 1937, No. 36263. [Class 35] [Also in Group XXXVII] The invention relates to systems in which a main machine A is supplied with a component of excitation varying as a continuous function of a variable quantity associated with the machine such as current or speed but only over a part of the full range of values of the variable, the supply of such component being effected by an exciter EX the output of which is controlled in accordance with the variable quantity and the armature circuit of which includes an opposing bias electromotive force and a polarity responsive or unidirectionally conductive device such as a rectifier R, the arrangement being such that the component excitation is supplied only when the E.M.F. of the exciter, due to the control action of the variable, exceeds the bias E.M.F. (or in some cases when it is less); according to the invention, the exciter has a field winding F1 self-excited through or subject to the same or another rectifier &c. arranged codirectionally with the first so that the exciter has a ready response to changes in value of the variable quantity. In the arrangement according to Fig. 1, A is a direct current generator which is to be decompounded when a predeterinined current is exceeded. MF being a separately excited main field winding and DF a decompounding winding which is effective only when the excitation of the exciter winding F2 determined by the current traversing an inductive resistance SH exceeds the bias excitation of the winding F3. Reverse current through the windings DF and F is prevented by the rectifier R which may be replaced by a polarised relay having an operating coil connected across the exciter armature and biassed by a permanent magnet or by a winding excited from the bias source of E.M.F. which may be a battery or an exciter driven at constant speed. In a modification, the source of bias E.M.F. is connected in series with the exciter armature. When the main machine is an alternating current machine, the winding F2 may be supplied through rectifiers. If the main machine is a motor the speed of which is to be limited, field winding F2 is dispensed with and the exciter is mechanically coupled with the armature of the main machine. The rectifier R may be connected across the windings DF and F1 so as to shunt these windings during the period in which the bias E.M.F. predominates. The biassing E.M.F. may be varied in accordance with some characteristic of the main machine, e.g. in order to limit the power output of the main machine the bias E.M.F. may be supplied by an exciter having a decompounding winding excited in accordance with the voltage of the main machine. Specification 472,472 is referred to.
Patent GB-949999-A (GB)
Title: Improvements relating to the production of naphthalene
Inventor: THOMPSON GEOFFREY HOYLE
IPC: C07C7/14
Filed: 1961-10-11
Abstract: Naphthalene crystals are recovered from a naphthalene oil obtained from continuous vertical retorts or low temperature carbonization by crystallizing at a temperature of +5 to - 5 DEG C.