baber/WOPTO huggingface dataset:
Patent GB-1146394-A (GB)
Title: Apparatus for investigating earth formations
IPC: G01V3/18
Filed: 1967-02-17
Abstract: 1,146,394. Determining characteristics of earth strata, electrically. SCHLUMBERGER TECHNOLOGY CORP. Feb.17, 1967 [Feb.23, 1966], No.7566/67. Heading G1N. Bore hole logging equipment comprises a coil system and an electrode system on a non-magnetic non-conductive mandrel 18 Figs. 1, 2. The coil system comprises transmitter coils T 1  T 2  and receiver coils R 1 , R 2 , R 3 . The electrode system comprises current emitting electrodes A0, A1 around the entire circumference of the mandrel support portion 10a and monitor electrodes M 1 , M 2  which may be on a limited arc portion of the circumference; each electrode being formed of a plurality of circumferentially spaced pieces or buttons 21. The coil system and electrode system are operated at different frequencies to avoid signal interference, and in order to minimize induced eddy currents in the electrodes, each electrode forms closed resistive loops. Each electrode piece of A0, A1 is connected by a nichrome and copper wire 23 to a ring 122 also of nichrome and copper wire, the combination, including circumferential portions of an insulating sleeve 20 between the electrode pieces, forming closed resistive loops. The resistance ring 22 is connected to a current source at point 24 and the electrode pieces will each be at substantially the same potential, as it is arranged that the resistances from the current connection point 24 to each electrode piece are equal. Alternatively, in Fig.4 (not shown) the ring 22 is omitted and each electrode button 21 is connected by relatively low resistance radially disposed wire to a central tie point connected to the current source, the resistive path loop being formed by the electrode pieces and intermediate portions of insulating sleeve 20. In Fig. 5 (not shown) each current electrode is constituted by a circumferential resistive loop (27) and a partially conductive sleeve (28) e.g. conductive rubber between the loop and the support means circumferential surface, and the potential source is connected to various circumferential points on the electrode by radial conductors. Fig.2 shows an equipotential plot line 29 surrounding the electrode system. To obtain an accurate average reading of the potential by the monitor electrodes, the monitor electrode buttons may be placed on the circumference of the support means 10a at positions corresponding to valleys and peaks of the line 29, as indicated at 31, 32.
Patent GB-547283-A (GB)
Title: Improvements in or relating to sliding clasp fasteners
IPC: A44B19/42
Filed: 1941-06-16
Abstract: 547,283. Ornamenting sliding-clasp fasteners. ZIPP FASTENER CO., Ltd., and FRUENGEL, H. R. June 16, 1941, No. 7578. [Class 44] [Also in Group XV] The slider or fastener members, or both, of a sliding clasp fastener are coated on one or both sides with adhesive on to which a layer of suitably coloured cotton or wool flock or like material is sprayed or blown. Preferably such spraying is in a direction perpendicular to that of the slider movement to reduce the danger of the flock being torn off the base. The adhesive, which may be applied by spraying or dipping, may be slow-drying lacquer, or a quick-drying lacquer softened by spraying with a suitable medium prior to applying the flock layer.
Patent GB-800777-A (GB)
Title: A novel pyrimidine derivative and a process for the manufacture thereof
Filed: 1956-11-23
Abstract: The invention comprises 5-amino-2:4-dimethyl-pyrimidine and its preparation by condensing acetamidine or a salt thereof with an a -alkoxymethylidene-acetoacetic acid ester for example ethyl a -ethoxymethylideneacetoacetate and treating the resulting 2:4-dimethylpyrimidine-5-carboxylic acid ester by known methods for the conversion of a carboxylic ester into an amine to give the desired compound.  The condensation of the acetamidine or salt thereof with the a -alkoxymethylidene-acetoacetic ester is suitably carried out in aqueous or alcoholic solution in the presence of an alkaline agent such as potassium carbonate or an alkali-metal alkoxide at about 20 DEG  C.  The conversion of the 2:4-dimethylpyrimidine carboxylic or ester to the amine may be effected by the Hofmann degradation, by treating with ammonia to form 2:4-dimethylpyrimidine-(5)-carboxamide, heating with bromine and sodium methoxide to form methyl 2:4-dimethylpyr-imidyl-(5)-carbamate and hydrolysing, for example by aqueous sodium hydroxide or barium hydroxide, to give the amine.  Alternatively the Curtius degradation may be used. Examples describe the preparation of the ethyl ester of 2:4 - dimethylpyrimidine - (5) - carboxylic acid and its conversion to 5-amine-2:4-dimethylpyrimidine.
Patent GB-232932-A (GB)
Title: A gas-turbine having one or more disk-shaped rotor wheels
IPC: F01D5/08
Filed: 1925-03-20
Abstract: 232,932. Kohler, C. April 26, 1924, [Convention date]. Cooling parts; blades. -In gas turbines a layer 7 of heat-insulating material, such as enamel or asbestos, is interposed between each rotor blade 2 and its disc 1. The blades 2 are uncooled and are made of heat-resisting material, such as an alloy of cobalt and chromium, or of chromium and nickel, or of nickel and cobalt. Each disc 1 runs with small clearance between two water-cooled diaphragms 4, cooling air or steam under pressure being admitted to the spaces 8 to flow outwardly through throttling passages 10 near the blades. The diaphragms 4 are provided with heatinsulating layers 14, 9.
Patent GB-330533-A (GB)
Title: Improvements in or relating to fine-adjustment controls for variable condensers and like adjustable instruments of wireless apparatus
IPC: H03J1/14
Filed: 1929-03-08
Abstract: 330,533. Plessey Co., Ltd., and Heyne, W. O. March 8, 1929. Wireless tuning - apparatus, adjustment and indicating devices for.-A fine adjustment device for radio tuning parts comprises an indicator drum 16 having an arcuate slot 21 engaged by friction rollers 22, 23 actuated by a knob 18, all of these parts being mounted on a bracket 13 secured to the panel 14. The rollers have an end-on engagement with the outer edge of the slot 21, a spring 25 providing pressure between the parts. The drum 16 is provided with a scale 17,
Patent GB-1492962-A (GB)
Title: Method and apparatus for applying coating compositions to strip material
IPC: B05C1/08
Filed: 1974-02-19
Abstract: 1492962 Coating metal strip ALCAN RESEARCH & DEVELOPMENT Ltd 18 Feb 1975 [19 Feb 1974] 7611/74 Heading D1L Paint is applied to a metal strip 1, supported on backing roll 2, by a rubber-covered applicator roll C, the paint being transferred to roll C by a small steel transfer roll D from a rubber-covered pick-up roll B, roll B being metered by steel metering roll A doctored by blade 6. The diameter of the small roll D may be 2.5-20 cms, whilst the diameters of rolls A, B and C may be 25, 30 and 30cm respectively. Roll D is floatingly mounted between rolls B and C. The peripheral speed of rolls B and D is 40-90% of the speed of the succeeding roll. Roll A may have a peripheral speed of up to 90% of that of roll B.
Patent GB-548571-A (GB)
Title: Improvements in catapult spools for aircraft
IPC: B64F1/06
Filed: 1941-06-16
Abstract: 548,571. Launching aircraft. BLACKBURN AIRCRAFT, Ltd., ADIE, R. H., and SCOTT, A. R. June 16, 1941, No. 7621. [Class 4] A spool for engagement by the claw of a catapult is mounted for endwise movement into and out of a housing in the aircraft and is spring loaded so that it is automatically retracted into its housing when it is no longer engaged by the claw. As shown, the spool 3 has an inner tubular extension 4 sliding within a tube 2 in the aircraft. A fitting 5 has a limited sliding movement within the extension 4 being normally held by a spring 9 against a collar 8 within the extension 4. The fitting 5 has a pin 10 working in a slot I in a fixed sleeve 12 the outer end of the slot having an offset portion 13 into which the pin 10 can enter when the fitting 5 is pulled and then turned by a finger piece 6 at its outer end so that the spool is held extended until it is engaged by the claw. An elastic cable 14 connects the two fittings on opposite sides of the aircraft. After the spools are engaged by the claws, the pins 10 are released from the offset portions 13 of the slots 11 by turning the finger pieces 6 so that as the spools draw out from the forks during a launching operation the spools are immediately retracted by the elastic cable 14.
Patent GB-330539-A (GB)
Title: Improvements in process for transformation of petroleum hydrocarbons into gasoline
IPC: C10G9/14
Filed: 1929-03-08
Abstract: 330,539. Jenkins Petroleum Process Co. Nov. 16, 1928, [Convention date]. Hydrocarbons, cracking. - In a continuous process for cracking oils in which the oils mixed with an adsorptive binder of ash forming content are heated under pressure and then removed to an non-extraneously heated zone of reduced pressure where the light fractions vaporize leaving a liquid residium, the latter is passed through a second heating zone to a further zone of reduced pressure where further vapours are evolved leaving a residuum which on cooling solidifies into a dry coal like structure. The cracking zone may comprise a still 1 of the Jenkins type, from which vapours pass to a dephlegmator 20 to which crude oil, or condensate produced in the process is fed from a supply tank, 22 by a pump 23 and pipe 25, the topped oil passing to the still 1 by a pipe 21. The required amount of adsorptive binder is fed to the system at a point in the pipe 25 (not shown). The heavier fractions, collecting in the cross drum 5 pass through a pipe 26 and reduction valve 27<11> into a low pressure vapour separator 29 from which vapours pass to a dephlegmator 73. The liquid residuum in the separator 29 is fed through lines 34, 26, to a; surge tank 36 provided with try cocks and then passes through a heating coil 41 to a second separator 47 the liquid residuum from which passes through a line 57 to a storage vessel where it solidifies to a coal-like body. The vapours evolved from the zone 47. pass through a heat exchanger 66 to a condenser 50<1> and storage tank 51 from which the condensate may be recycled to the tank 22. The vapours from the dephlegmator 20 are passed through a reducing valve 82 and a line 81 to the mid point of a fractionating tower 71, a valve 83 in an extension line providing remote regulation of the pressure. The fraction passing off from the top of the tower 71 through a line 84 and condenser 85<1> is collected in a receiver 86, while the fractions collecting at the base of the tower are collected in a receiver 90. The vapours passing from the separator 29 to the tower 73 may be passed through a heat exchanger 70 in the base of the tower 71 and through a heat exchanger 64, and the light fraction passing from the top of the tower 73 is collected in a receiver 79 while the middle and heavy fractions are returned to the tank 22 through lines 76, 74. The tank 22 is supplied with crude oil by a pump 60 and line 61<1>, the crude oil being pre-heated by passage through the heat exchangers 62, 64, and 66. Specifications 255,616 and 262,666, are referred to.
Patent GB-687110-A (GB)
Title: Improvements in or relating to cage nuts
IPC: F16B37/04
Filed: 1950-03-28
Abstract: 687,110. Electric welding. FIELD, C. L. March 27, 1951 [March 28, 1950], No. 7671/50. Class 83 (iv). [Also in Group XXV] The cage 6 of an anchor nut to be welded to a supporting sheet &c. has welding projections 7 and a closure member 10 for retaining the nut is lacquered &c. to confine the current to the projections.
Patent GB-1374063-A (GB)
Title: Highpressure gas discharge lamps
Inventor: NIENHUIS H
IPC: C04B37/02
Filed: 1973-02-16
Abstract: 1374063 Glass for sealing to metal and ceramic PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 16 Feb 1973 [21 Feb 1972] 7729/73 Heading C1M [Also in Division H1] In a high-pressure gas discharge lamp comprising a discharge vessel 1 which consists mainly of aluminium oxide and a gas filling comprising at least one halide, an electrode 7 located within the discharge vessel is secured to a current lead-through member 5 which is sealed in a vacuum-tight manner to the discharge vessel with the aid of a melting glass 6 which consists of 20 to 60% by weight of SiO2, 0 to 40% Al2O3, 20 to 80% MnO and optionally up to a total of 10% by weight of one or more of the oxides Na2O, BaO, CaO, FeO, ZnO and B2O3, the SiO2 content being larger than the Al2O3 content. A preferred composition includes 40 to 55% SiO2, 10 to 40% Al2O3, and 20 to 40% MnO, e.g. 54% SiO2, 23% Al2O3 and 23% MnO.
Patent GB-397577-A (GB)
Title: Sewing machines
Inventor: GONYK IGNATZ
IPC: D05B27/02
Filed: 1932-03-16
Abstract: 397,577. Sewing- machines. GONYK, I., 64, Rennweg, Vienna. March 16, 1932, No. 7735. Convention date, March 19, 1931. [Class 112.] Feed reversing and regulating ; frames.-Up - anddown movement of a feed dog and shuttle-actuating movements are derived from one end of a two-armed lever rocking about a substantially vertical axis, forward and backward movement of the feed dog being derived in known manner from a separate gearing. The rocking lever may comprise a tubular member 64, Figs. 1 and 3, adapted to be rocked by a driver lever 51 about a vertical stud 68 screwed to the underside of the base 5 of the machine. The lever 51 is of pressed iron and is journalled on a bolt 52 screwed in a bearing sleeve 53 of hardened steel pressed into the lever 51. Its forked upper end 54 is provided with linings of L-section screwed adjustably thereto in such manner as to embrace an eccentric 21 on a main driving shaft 15 driven by a belt 17 from an electric motor under the base 5. The shaft 15 is Journalled in two bearing rings 11, 12 carrying ball races 13, 14 and welded to the rear part 2 of a two-part casing secured together at the top edge by a fillet 3 of I-section welded to the part 2 and to the base 5 by a ring 4 welded to the rear part 2. The base 5 is hinged to a wooden base 7. The lower forked end 61 of the lever 51 embraces a sleeve 65, Fig. 9, journalled on a pin 67 in a plug 66 in the right-hand end of the lever 64. The lefthand end of the lever 64 carries a depending arm 70 in the lower end of which is inserted an arm 72 carrying an adjustable exchangeable segment 73 with a toothed arc 74 of leather meshing with a pinion 75 on a vertical shaft 76 which supports the shuttle casing. A steel roller 79 journalled on the left-hand end of the lever 64 engages a guide slot in a cloth feed actuator 81 connected to the feed cranks 82 to lift and lower the same. The length and direction of stitch is controlled by a cloth feed lever 85, Fig. 16, actuated at its upper forked end by a cam 84 on the main shaft 15 in similar manner to the lever 51 but journalled on a rocking lever the fulcrum of which is adjustable by a knob 88 to vary the length and direction of movement of the feed-dog. The lower end of the lever 85 carries a bored projection 99 for a pin 100 around which one end of a slotted lever 101 turns, the other end being clamped to a rock shaft 103 supported in sleeves in a bridge-piece and bracket on the baseplate 5. The cloth feed shaft 114, which supports the feed carrier 82 to which the cloth feed actuator 81 and the cloth feed plate 116 are secured, is journalled in two slotted bearing levers 112 carried at the left-hand end of the shaft 103.
Patent GB-583126-A (GB)
Title: Screw driver
IPC: F16B23/00
Filed: 1944-04-26
Abstract: 583,126. Screwdrivers. DEHN, F. B. (Phillips Screw Co.). April 26, 1944, No. 7806. [Class 61 (iii)] A screwdriver 1 has a frusta-conically shaped bit comprising a number of alternate ribs 2 and flutes 3 to engage corresponding grooves and ridges in the screw head recess, the width of each flute being equal to that of each rib. The ribs originate from lines 4 on the periphery of the shank and the flutes from points 6, and they terminate in a blunt end 5.
Patent GB-796924-A (GB)
Title: Improvements in or relating to rotary pumps
IPC: F04C14/06
Filed: 1955-03-17
Abstract: 796,924. Rotary pumps. ETABLISSEMENTS BEAUDOUIN SOC. A, R.L. March 17, 1955 [March 23, 1954], No. 7806/55. Class 110 (2). In a rotary vacuum pump the shaft 1 is provided with at least one cavity 2 which alternately registers with a reservoir 4 and a passage 5. The passage 5 communicates with the pumping chamber at a point below the valve and registers with the cavity 2 at the moment when the pressure in the pumping chamber is lower than atmospheric pressure. The number of cavities in the shaft may be equal to the number of the vanes of the rotor.
Patent GB-311813-A (GB)
Title: Improvements in valve chest for rock drills
IPC: B25D9/24
Filed: 1929-03-11
Abstract: 311,813. Ingersoll-Rand Co., (Assignees of Murphy, T. L.). May 17, 1928, [Convention date]. Percussive. drills.- In a rock drill having an oscillating plate valve in a chamber coaxial with and intermediate the cylinder and ratchet mechanism, fluid is supplied to the chest at a point remote from the valve edge to prevent eddying of the pressure fluid and consequent retardation of valve, action. The piston C controls the exhaust B. and the supply is led to a chamber Q formed between the head G and a plate R provided with a forward extension S which enters the cylinder and has a bore T for the rifle-bar trunnion W. The valve-chest comprises plates Z, b recessed to hold the valve. The plate Z has supply passages e, d for the cylinder ends. The valve g is mounted on a hollow plug k with a lateral shoulder o which acts as a stop for the valve to permit the free passage of fluid over its raised ends. An annular passage r puts the valve-chest c into communication with the chamber Q by passages s, t, u. When the fluid enters the valve-chest it flows outwardly over the raised valve ends and eddy currents are obviated.
Patent GB-1381702-A (GB)
Title: Hollow charge mines
IPC: F42B23/04
Filed: 1973-02-16
Abstract: 1381702 Land and marine mines DYNAMIT NOBEL AG 16 Feb 1973 [18 Feb 1972] 7870/73 Heading F3A A self-righting, land, sea-bed or buoyant, hollow charge mine which can be dropped from aircraft, missiles or projectiles; or which forms part of the missiles or projectiles; or which can even be thrown by hand, comprises: a hollow charge 4; a close proximity or impact fuze for firing the mine if the mine approaches or strikes a target whilst being laid; and a proximity or impact fuze 6 for firing the mine once it has been laid. In the case of a land or sea-bed mine, a cap 3 causes the mine to roll over on landing, whereupon a cord 23 releases spring loaded legs for erecting the mine. The mine can be laid with the aid of a releasable parachute 1. The fuze 6 comprises; a spring striker mechanism; an infra-red sensor; a noise sensor; a vibration sensor; or an inductive or capacitative approach sensor. The fuze 7 comprises: piezoelectric means; electrical contacts which are closed by acceleration when the mine strikes a target; magnetic sensors; or inductive or capacitative approach sensors. When inductive and capacitative sensors are used in both of the fuzes 6 and 7 they are connected with a threshold trigger which activates a thyristor connecting a power source to the fuzes.
Patent GB-1069377-A (GB)
Title: Compressor blade retention structure
Inventor: MAY GORDON CYRIL
IPC: F01D9/04
Filed: 1966-02-23
Abstract: 1,069,377. Compressor blade fixing. ROLLS-ROYCE Ltd. Feb.23, 1966, No.7875/66. Heading F1T. The compressor stator blades 21 are retained in the casing 15 of a gas turbine engine by projections 19 from the shroud platform 20 of each blade engaging in annular grooves 18 in rings 16 secured to the casing. Circumferential movement of the blades 21 is prevented by a locking plate 24 engaging an axial groove 23 in a blade platform 20 and grooves (22), Fig. 3 (not shown), in rings 16. The plate 24 substantially wholly blanks off the annular channel 17 between rings 16 to prevent the circumferential circulation of air therein. Since adjacent platforms 20 abut, only one plate 24 is necessary for the complete blade ring, but eight to ten, or one plate for each platform may be used. In an unstepped compressor casing the rings 16 are extended axially at their peripheries so as to abut together each locking plate 24 being further supported by a groove in the extensions. The mounting construction is applicable also to compressor rotor blades.
Patent GB-595833-A (GB)
Title: Improvements in or relating to churns or the like
IPC: A01J15/14
Filed: 1944-04-28
Abstract: 595,833. Churning-apparatus. LOWE, T. H. April 28, 1944, No. 7954. [Class 84] [Also in Group II] A means for churning cream by agitating with a current of air comprises a vessel 4 for the cream, to the bottom of which air is supplied by a tube 19 having a relatively large outlet at its lower end, and a blower 11 driven by an electric motor. The lid of vessel 4 has an annular lip 24 and a frusto-conical member 25, to which is attached a baffle disc 26 comprising frusto-conical parts 29, 37 and an annular skirt 30. Air leaves the container 4 through an annular gap between the part 30 and the wall and through an annular gap 27 between members 25, 29. The baffle disc 26 prevents the cream from splashing out of the container. A frame comprising bars 14, 20 supports the motor 10 and the blower 11, and is attached by clips 21 to the lid 22 and by U bolts 16 to a pair of arched rails 3 to be slidable on the latter between stops 31 and 32 for the purpose of opening and closing the lid 22. Means may be provided for heating the circulating air, and the air may be passed through the cream continuously in a closed circuit.
Patent GB-1029988-A (GB)
Title: Arrangement to improve the signal-to-noise ratio on line systems with high noise level
IPC: H04B3/54
Filed: 1963-02-27
Abstract: 1,029,988. Transmission systems. TELEFONAKTIEBOLAGET LM ERICSSON. Feb. 27, 1963 [Feb. 28, 1962], No. 7954/63. Heading H4R. In a power distribution network wherein tandem exchanges are associated with each transformer station and carrier-frequency signals are transmitted over the network and through one or more exchanges, each signal is accompanied by a pilot signal which adjusts the gain of an amplifier at each exchange through which the signal and the pilot passes. By the use of a single pilot signal inserted at the transmitting station it is stated that the signal-tonoise ratio is considerably improved over the more usual systems in which a fresh pilot is injected at each tandem exchange. A subscriber 9 is connected through a local exchange 8 to a 4-wire tandem exchange 6 whereat the usual dialling signals set up a connection to the wanted subscriber. Speech signals, after comparison at 30, are modulated at 22 and a pilot signal and fixed frequency telemetry signals applied via hybrids 25 and 23 respectively are also modulated on to the carrier at 22. A second modulation stage may be employed with amplifier 20. The signals are then applied via the usual filter 5, 3 to a power line 1. At the incoming side of a tandem exchange, the pilot signal, which is derived from the feedback path 15, 16, 17 round demodulator 12, adjusts the gain of amplifier 11 in the usual manner. At the outgoing side of the exchange the signals are re-modulated on to the carrier at 22 but in this case relay 26 (operated during the setting up of the connection) prevents a further pilot signal being injected via hybrid 25. At the terminating exchange, where the pilot has no effect on the amplifier 11, the demodulated speech and telemetry signals are routed to their appropriate destinations.