baber/WOPTO huggingface dataset:
Patent GB-1134203-A (GB)
Title: Wire line core barrel improvements
IPC: E21B25/02
Filed: 1965-11-25
Abstract: 1,134,203. Boring earth &c. E. J. LONGYEAR CO. 25 Nov., 1965 [27 Nov., 1964], No. 50202/65. Heading E1F.  In core-taking apparatus in which an inner tube assembly 100 is attached to a bit and outer tube assembly 11 by latches 16 the assembly 100 has a fishing head 104 axially movable in a latch release tube 27 and carrying a flexible washer 112. In the position of the head shewn the head is raised relative to the tube so that the washer does not contact the tube 27 and the washer may flex to permit fluid to flow between the head and the outer tube assembly. The inner tube assembly is removed from the outer tube by pulling on the fishing head, the tube 27 camming the latches out of engagement with recess 21a in the outer tube. In the lowered position of the head the washer is supported by the tube 27 so that the assembly may be pumped to the bit through the outer tube. An overshoot (Figs. 9-11 not shown) for engaging the fishing head has a washer (156) which also permits the overshoot to be pumped through the drill string.
Patent GB-1276047-A (GB)
Title: Brushless d.c. oil cooled generator
IPC: H02K11/04
Filed: 1970-10-22
Abstract: 1276047 Electric generators BENDIX CORP 22 Oct 1970 [10 Nov 1969] 50218/70 Heading H2A In a brushless D.C. oil-cooled generator 1 comprising a rotor 3 rotatable in a housing 2 and both having cooling channels, e.g. helical grooves 20, 27, a main generator 4 having on the rotor a rotor winding 7 co-operating with a stator winding 6 having its output connected through first rectifiers to output terminals, and an exciter 5 having a stator winding 8 in the housing and a co-operating rotor winding 9 having its output connected through second rectifiers 38 to the main generator rotor winding 7, the first rectifiers comprises twelve positive and twelve negative rectifiers 31, and the main generator stator winding 6 comprises two groups A, B of delta connected windings 39, 39A spaced 30 degrees electrical apart and each comprising two delta sets with each corner of each set connected to a junction between respective positive and negative rectifiers. This is to minimize output ripple, and as shown the rectifiers are in respective annular heat sinks 29, 29A, e.g. of Al, connected to an output terminal block 36. Coolant oil entering a channel 15 is forced by a pump 16 through a shaft channel 18, a chamber 19, and the shaft helical groove 20 to an end bell chamber 21 whence a channel (22), Fig. 2, feeds it through parallel channels 24 in the heat sinks, a channel 26, and the helical grooves 27 to exit via a discharge port 28.
Patent GB-954852-A (GB)
Title: Pressure cycle for molecular sieve separation of normal paraffins from hydrocarbon mixtures
IPC: C07C7/13
Filed: 1960-04-01
Abstract: Normal paraffins are separated from C4+ hydrocarbon mixtures by contact with a crystalline zeolitic molecular sieve at elevated pressure and 120-455  DEG C., adsorbed hydrocarbons are desorbed by reducing the pressure in such manner that the desorbed hydrocarbons flow cocurrent or simultaneously cocurrent and countercurrent to the direction of flow of the feed and the sieve is periodically reactivated by contact with an oxygen-containing gas at 400-565  DEG C.  The molecular sieve having a 5   pore size p  may be a calcium, strontium or magnesium zeolite A, zeolite D, calcium or zinc zeolite D, zeolite T, calcium-rich chabozite or erionite rich in sodium, magnesium, calcium or zinc.  A feed boiling in the range -25-150  DEG C. may be treated; if desired n-pentane may be added to prevent breakthrough of n-hexane or n-butane added to prevent breakthrough of n-pentane.  Desorption is preferably effected without heating by applying a vacuum at the exit end or simultaneously the inlet and exit ends of the adsorption zone, reducing the pressure to 10-250 mm. mercury. The reactivation is preferably effected with a gas containing less than 1% of oxygen and gradually increasing the oxygen content, e.g. up to 20%, maintaining the temperature below 565  DEG C., until the effluent gas has the same composition as the feed. Specifications 777,232, 824,643, 868,846 and 912,936 also are referred to.
Patent GB-1253799-A (GB)
Title: Improvements in or relating to sludge centrifuges
Inventor: NILSSON VILGOT RAYMOND
IPC: B04B1/18
Filed: 1970-10-22
Abstract: 1,253,799. Discharging sludge from centrifuges. ALFA LAVAL A.B. 22 Oct., 1970 [23 Oct., 1969], No. 50315/70. Heading B2P. A sludge centrifuge comprises a rotor 1 (11) having peripheral sludge outlets 3 arranged to be opened or closed during operation of the centrifuge by means of a piston 4, a control unit 17 arranged to actuate the sludge outlets 3 when the rotor is to be emptied of its contents such that at least part of the sludge settled in the rotor is discharged while liquid is maintained therein, and sensing means 15 arranged to sense the balance of the rotor and control the further discharging of the rotor contents. Liquid to be separated is led into the centrifuge through a conduit 12 and a hollow drive shaft 5. Purified liquid leaves via an overflow outlet 9 and a conduit 13. Sludge discharged through the outlets 3 leaves through a conduit 14. The means 15 senses vibrations arising from unbalance of the rotor and is connected to the control unit 17. The latter controls the operation of a valve 19 in the conduit 12 and of a valve 21 in a conduit 22 which supplies operating liquid at 4a for controlling the piston 4. By stopping the flow of operating liquid to the centrifuge for a given length of time, the control unit 17 may provide for either partial or total emptying of the rotor according to a predetermined programme. When the rotor is to be emptied totally, the supply of liquid to be separated through the conduit 12 is stopped by means of the valve 19. Then for a very short period the supply of operating liquid through the conduit 22 is stopped by means of the valve 21. Simultaneously the connection between the vibration sensing means 15 and the control unit 17 is broken. The piston 4 moves downwards to open the outlets 3 for discharge of sludge and a quantity of liquid. Supply of operating liquid is resumed and immediately after closure of the sludge outlets 3 the connection between the sensing means 15 and the control unit 17 is re-established. If now a portion of the sludge has adhered to the rotor wall and thus has not been discharged through the outlets 3, it will cause unbalance of the rotor which is sensed as heavy vibrations by the means 15 which sends a signal to the control unit 17 which in turn stops the planned total emptying operation; This may lead to an alarm signal leaving the control unit 17 or to the performance of suitable corrective operations. For instance, the speed of the rotor may be reduced to that at which continued total emptying of the rotor is possible without any risk of machine damage, after which the rotor is stopped in order to be freed manually of the adhering sludge portion. Alternatively, the rotor may be stopped without having been emptied. The rotor may also be emptied of sludge and liquid step by step.
Patent GB-1070669-A (GB)
Title: Improved fluid flow control valve structure
Inventor: COMBES MARVIN G
IPC: F16K31/52
Filed: 1965-11-29
Abstract: 1,070,669. Valves. GROVE VALVE & REGULATOR CO. Nov. 29, 1965 [Jan. 15, 1965], No. 50627/65. Heading F2V. A valve closure 30 is carried by an arm 32 which is rotatable by a shaft 40 to move the closure clear or over the seat 26, the closure being movable axially, when aligned with seat, into or out of sealing engagement with the seat. As shown, the closure carries a screwthreaded member 72 which engages an internal screw thread of a sleeve 74. The sleeve is carried by the arm 32 and is rotatable but is prevented from axial movement with respect to the arm whereby rotation of the sleeve moves the member 72 and hence the closure 30 axially. The sleeve carries a sprocket wheel 92 which is connected by a chain 94 to a sprocket 96 which is rotated by a shaft 98 extending through the shaft 40. A bellows 84 seals theclosure and arm. The valve housing has covers such as 104 to provide access to covers 110 and 112 in the arm for repair or lubricating purposes. The arm also carries rollers 60 which run on track of the housing. In a modification the closure is moved by fluid pressure acting on a piston, the fluid lines being fed through the shaft and arm. In a further modification the closure is moved by a lever pivoted in the arm.
Patent GB-506320-A (GB)
Abstract: 506,320. Arrangements of dynamos and interrupters. FAIRBROTHER, H. (Bayerische Motoren Werke Akt.-Ges.) Oct. 5, 1938, No. 28919. [Class 7 (iv)] The ignition magneto 1 and the interrupter cam 6 are arranged coaxially with and driven from the crank-shaft 2 and the cam-shaft 4 respectively. A lighting generator 5 is driven from the cam-shaft gearing.
Patent GB-1353964-A (GB)
Title: Process of manufacturing substituted alpha-naphthoxy acetamides
IPC: C07C59/66
Filed: 1971-11-01
Abstract: 1353964 Preparation of substituted α-naphthoxyacetamides STAUFFER CHEMICAL CO 1 Nov 1971 [2 Nov 1970] 50685/71 Heading C2C α-Naphthoxy acetamides of formula (wherein R 1  is hydrogen or (C 1-6 ) alkyl, R 2  is hydrogen, (C 1-6 ) alkyl or (C 2-6 ) alkenyl, and R 3  is (C 1-6 ) alkyl or (C 2-6 ) alkenyl; provided that when R 1  and R 2  are both hydrogen, R 3  is alkyl having 1 or 2 carbon atoms or (C 2-6 ) alkenyl, comprising: (a) treating an acid of formula wherein R 1  is as defined above, with phosgene or thionyl chloride or mixtures thereof, to form the acid chloride of α-naphthoxy propionic acid; the phosgene or thionyl chloride being used in a stoichiometric excess and the reaction being carried out in the presence of dimethyl formamide or triethylamine hydrochloride catalyst; (b) treating the acid chloride with N,N-dialkylamine in stoichiometric excess to form the endproduct, said alkyl group having 1 to 5 carbon atoms. N,N-Diethyl-2-(α-naphthoxy)-propionamide is prepared in the Examples. The intermediate α-Naphthoxypropionic acid is prepared by reacting α-naphthol with α-chloropropionic acid.
Patent GB-1094987-A (GB)
Title: Remote monitoring system
Inventor: GOLDSTINE HALLAN EUGENE
IPC: G08B26/00
Filed: 1964-12-14
Abstract: 1,094,987. Telemetering systems; sequential resistance measurement. RADIO CORPORATION OF AMERICA. Dec. 14, 1964, No. 50847/64. Headings G1N and G1U. In apparatus for cyclically measuring the values of variables at remote stations, each represented by a variable resistor, a central station transmits a selected frequency which is blocked by all the stations but one, and at that station a constant current produces a voltage drop across the transducer resistor which is measured and recorded at the central station. As shown, a manually operated switch 27 at the central station T s  connects a selected frequency alternating voltage to a pair of lines 57, 58 across which is connected a number of remote stations R 1 , R 2  &c. At each station a filter is connected across the lines 57, 58, only one being tuned to pass the transmitted frequency, thus producing a voltage across the secondary of an input transformer 66, which is rectified at 71 and causes transistors 73, 76 to change from the blocked to the conducting condition. This connects the transducer resistor 80 across the lines 57, 58 in series with a constant current source 10 at the central station T s , and the p. d. across resistor 80 is automatically measured and recorded at 60, the voltage drop across the auxiliary line resistance being balanced out by a compensating circuit 19 having a switch 48 gauged to selector switch 27, choosing an appropriate series resistor. The number of remote stations may be doubled, using the same number of frequencies, by reversing the polarity of the constant current for half the stations, with the rectifier 71 also reversed. The resistors 80 may be sensitive to pressure, temperature, humidity, &c., and an alarm 62 is operated at an extreme value of the variable.
Patent GB-1275914-A (GB)
Title: Pressure operated diaphragm valve
Inventor: FRAMPTON RONALD CHARLES
IPC: F16K31/40
Filed: 1968-10-26
Abstract: 1275914 Valves BRITISH OVERHEAD IRRIGATION Ltd 11 Nov 1969 [26 Oct 1968] 50929/68 Heading F2V A main valve member 14 controlling flow from an inlet 11 to an outlet 12, 12a is closed by inlet pressure acting in chamber 44 on a diaphragm 29 which is connected to the valve member 14 through a spacer 19, and opened by release of pressure from this chamber through an auxiliary valve to the outlet. As shown the auxiliary valve comprises an electromagnetically actuated pilot valve member 52 controlling a relay diaphragm valve 48 having a chamber vented to the outlet through pilot seat opening 51 and supplied from the main valve inlet through passage 46 and orifices 50 in the relay diaphragm.
Patent GB-1461387-A (GB)
Title: Comparative photometer having an automaitc gain control
IPC: G01J1/16
Filed: 1973-11-02
Abstract: 1461387 Photometer with automatic gain control ILFORD Ltd 3 Dec 1974 [2 Nov 1973] 50929/73 Heading G1A A photometer comprises photoemissive cells Pi P 2  for comparing modulated light intensities, arranged to pass the difference of their outputs to an amplifier A with negative feedback provided by photo-conductor P 3  whose conductance is proportional to the incident light intensity, receiving light from the same source as P 1  and/or P 2 , the phase and magnitude of the amplified voltage being used for the comparison. Red filter F 1  and green filter F 2  permit monitoring of colour balance. In the embodiment of Fig. 2 (not shown) the cell difference signal is amplified by amplifier (A 1 ) with FET's at its input, followed by amplifier (A 2 ) with photo-conductor feedback. In apparatus for examining lengths of colour film, light modulated by the shutter passes through a diffuser to photometers as described, one greenblue and the other green-red to supply signals to an oscilloscope such that  X = ¢ K(#D G -#D B )-(#D G -#D r ) and Y = K#(#D G -#D B ) where X and Y are the orthogonal deflections, K is a constant, #D G  is the optical density of the film for green, &c. The display is equivalent to a trilinear colour chart with cyan magenta and yellow axes mutually at 120 degrees.
Patent GB-1435050-A (GB)
Title: Hydratropic acid derivatives and preparation thereof
IPC: A61K31/475
Filed: 1974-11-25
Abstract: 1435050 Hydratropic acid derivatives MERCK PATENT GmbH 25 Nov 1974 [26 Nov 1973] 50946/74 Heading C2C Novel compounds I in which R<SP>1</SP> is H, C 1-4  alkyl, 2-acetamidoethyl, 1 - methyl - 4 - piperidyl or 2,3 - dihydroxypropyl, R<SP>2</SP> is Hal, phenyl, 4-Hal-phenyl, 4-Halphenoxy, 4 - Hal - phenoxymethyl, 1,2,3,4- tetrahydro - 1 - naphthyl, 1 - pyrryl, piperidino, isoindolino, 1,2,3,4-tetrahydroquinolino, 1,2,3,4 - tetrahydro - 4 - quinolyl or 1 - methyll,2,3,4-tetrahydro-4-quinolyl and Hal is F, Cl or Br, and their physiologically acceptable salts with acids or bases, are prepared by (a) condensing a phenol II or a salt thereof, with a compound III in which X is Cl, Br, I, OH or esterified OH, or (b) methylating a compound IV or a metal derivative thereof, or (c) treating a compound V in which Z is a functionally modified carboxyl group but is different from COOR<SP>1</SP>, with a solvolysing agent. The resulting compound I may be treated to convert the R<SP>1</SP> radical thereof into another R<SP>1</SP> radical by treatment with an esterifying, transesterifying or solvolysing agent, and/or a compound I may be converted into a salt, or, when a salt is obtained, it may be converted into the free compound. 2 - Phenyl - 2 - [4 - (1 - methyl - 1,2,3,4 - tetrahydro - 4 - quinolyl) - phenoxy] - propionitrile is prepared by methylation of the corresponding acetonitrile compound. Pharmaceutical compositions for reducing cholesterol, triglyceride or uric acid levels or inducing liver enzyme, comprise one of the above novel compounds together with a pharmaceutical carrier or excipient. The compositions may be administered orally, parenterally or topically.
Patent GB-1480592-A (GB)
Title: Light emitting diodes
IPC: H01L27/15
Filed: 1973-11-02
Abstract: 1480592 LED arrays MARCONI CO Ltd 5 Aug 1974 [2 Nov 1973] 50970/73 Heading H1K An array of light-emitting diodes is formed by the steps of (a) diffusing an orthogonal array of P type islands 20 into an N type epitaxial layer on an N<SP>+</SP> type substrate, (b) providing a first set of conductors comprising parallel strips each of which contacts all the P type islands 20 in one row, (c) mounting the semi-conductor structure so formed on a transparent support 31, e.g. of sapphire, with the first set of conductors adjacent the support and preferably bonded, via Cu-plated areas 26, to corresponding plated areas on the support, (d) depositing a second set of conductors 28 on the N<SP>+</SP>-type substrate, the conductors 28 comprising parallel strips arranged perpendicularly to those of the first set and crossing the latter adjacent each of the P type islands 20 and (e) etching channels 30 completely through the semi-conductor body using the conductors 28 as a mask. In the embodiment the N-type epitaxial layer is of GaAsP on an N<SP>+</SP>-type GaAs substrate. Each conductor of the first set preferably has a window over part of each of the corresponding P-type islands 20, a SiO 2  layer 24 filling this window and serving as a mask during the plating of the areas 26. Prior to deposition of the conductors 28 the N<SP>+</SP>-type substrate is preferably lapped to reduce the degree of underetching during subsequent etching of the channels 30.
Patent GB-1448320-A (GB)
Title: Lightweight inorganic material
IPC: C04B35/63
Filed: 1974-11-25
Abstract: 1448320 Lighweight material WASHING- TON STATE UNIVERSITY RESEARCH FOUNDATION Inc 25 Nov 1974 [4 March 1974] 50972/74 Heading C3N An inorganic composition that forms a rigid monolithic lightweight mass upon application of external heat comprises cenospheres separated from the fly ash formed when pulverized coal is burned and phosphoric acid. The composition may further comprise a metal phosphate or a source of metal phosphate selected from materials reactive with phosphoric acid and containing aluminium, zinc, magnesium or chromium. Suitable sources are metal oxides, hydroxides or carbonates. In such a situation the molar ratio of metal phosphate to free phosphoric acid in the liquid may be between 0À1/1 and 1/1. The ratio by weight of liquid binder to cenospheres is preferably in a proportion of one part liquid binder to 0À5-3À5 parts cenospheres. The composition is moulded into a mass having the desired physical configuration and the moulded mass is heated to a temperature below which sintering of the cenospheres occurs. The moulded mass may further comprise an organic powder or beads of a material thatvolatilizes during the heating step, e.g. hollow phenolic beads or polystyrene or polyethylene powders; a material that foams during the heating step, e.g. metal carbonate or a metal such as aluminium or magnesium; or fly ash as an inorganic filler. The temperature to which the moulded mass is heated may be 200-950 C.
Patent GB-1065849-A (GB)
Title: Improvements relating to pump impellers
IPC: F04D29/22
Filed: 1963-12-30
Abstract: 1,065,849. Centrifugal pumps. FLYGTS PUMPAR A.B. Dec.30, 1963 [Jan. 5, 1963; July 19, 1963], No.51180/63. Heading F1C. Fig. 1 shows a single-channel pump impeller in which the single impeller blade 1 is formed with a step 3 adjacent its inlet edge 2, and a further step 4 situated, for example, opposite the step 3 and providing an outflow direction 5 which diverges from the adjacent blade surface 6. Any solids contained in the liquid being pumped are deflected away from the impeller blade surface by the steps, whereby wear caused by abrasive solids is reduced or damage to fragile solids such as fish or fruit is avoided. The turbulence produced behind each step serves to carry away any gases entrained in the liquid. A step 7 may be provided on the outside surface of the blade 1 to deal with entrained air between the blade and the walls of the pump casing. Fig. 3 shows how a step can be formed by curving the outlet edge 10 of a blade 9 outwardly. In a two-channel pump, the steps on the two blades may be diametrically opposite one another. In both single-channel and two-channel pumps, Figs. 2 and 7 (not shown), the abrupt steps may be replaced by scalloped contours such as those shown at (8), (21) and (22). Fig.6 (not shown) shows a single S-shaped blade provided with steps (24) and (25) on its pressure and suction sides, respectively. In a single-channel pump Fig.4 (not shown), the steps may be disposed at right angles to the impeller axis, being formed by abrupt increases in the radial dimension of the impeller at the junction of the axial inlet orifice of the impeller with the single impeller blade. As a further alternative, the steps may be disposed helically. The action of the steps or other contours may be reinforced by creating a whirl in the liquid by means of an auxiliary impeller (37), Fig. 14 (not shown), located adjacent the back-plate of the main impeller and comprising blades extending between a hub (38) and a peripheral ring (39). The hub (38) deflects solids away from these blades. The ring (39) may be omitted. The auxiliary impeller (37) may be driven through pawls or may be independently rotated, either slower or faster than the main impeller, by means of an inner shaft passing through the hollow shaft of the main impeller. Alternatively, the auxiliary Impeller may be fixed to the main impeller, either on the front surface of the back-plate of the main impeller or recessed into the back-plate. In single-channel impellers, the blades of the auxiliary impeller may be of varying radial length to conform to a helical flow path through the main impeller, longer blades having less axial depth than shorter blades to provide a hydrodynamically uniform action of the auxiliary impeller. The steps or other blade profiles and the auxiliary impeller may be replaceable and may be of elastic or plastics material.
Patent GB-1213377-A (GB)
Title: Improvements in or relating to synchronous electric motors
Inventor: BHOWMICK ASHIT KUMAR
IPC: H02K21/14
Filed: 1968-10-29
Abstract: 1,213,377. Electric motors. GENERAL ELECTRIC and ENGLISH ELECTRIC COMPANIES Ltd. 3 Oct., 1969 [29 Oct., 1968], No. 51249/68. Heading H2A. In a single phase synchronous electric motor having a generally cylindrical permanent magnet rotor 1, Fig. 1, surrounded by a ring of stator polepieces providing pole surfaces lying substantially in a curved surface coaxially surrounding the rotor wherein each stator polepiece provides a main pole surface 10, Fig. 3, having a major axis extending substantially parallel to the rotor axis, at least one stator polepiece additionally provides an auxiliary pole surface 11 having a major axis extending in a direction inclined to the rotor axis to enable self starting of the motor. The rotor of the motor disclosed comprises a ferrite ring 8 mounted on a plastics core 9 and peripherally magnetized to have ten poles, alternately N and S. The stator includes two magnetic material plates 4 having interdigitated peripheral polepieces, each having a main pole surface 10 and an auxiliary pole surface 11. The polepieces, of which there are five on each plate, are magnetized by an A.C. energized coil 6, the whole assembly being mounted in a magnetic material casing 7. To further improve self starting, one or more of the auxiliary pole surfaces 11 may be omitted or at least foreshortened.