baber/WOPTO huggingface dataset:
Patent GB-652999-A (GB)
Title: Improvements in and relating to magnetic recording and reproducing systems
IPC: G11B5/265
Filed: 1948-02-11
Abstract: 652,999. Magnetic sound recording and reproducing apparatus. BRITISH THOMSONHOUSTON CO., Ltd. Feb. 11, 1948, No. 4041. Convention date, Feb. 12, 1947. [Class 40 (ii)] In a magnetic recording and reproducing device wherein the recording or reproducing medium 1 (e.g. wire or tape), is drawn longitudinally across the pole faces 3, 4 of the recording or reproducing head 6, the lengths A, B of the pole faces are such that a uniform response is obtained over a desired frequency range. The length of the pole faces of the recording-head are made not more than a half of the wavelength of the highest frequency to be recorded, whilst the length of the pole faces of the reproducing head are made not less than a half of the wavelength of the lowest frequency to be reproduced. In both cases the gap between the polepieces should be made approximately equal to the half wavelength but less than the full wavelength of the highest frequency to be reproduced.
Patent GB-1502546-A (GB)
Title: Optical objectives
IPC: G02B11/32
Filed: 1976-02-02
Abstract: 1502546 Petzval objective RANK ORGANISATION Ltd 3 Nov 1976 [2 Feb 1976] 4077/76 Heading G2J A Petzval lens (i.e. front and rear positive groups separated by an air space not less than 0.75F) wherein the two groups each contain a triple combination and a single lens has the each single lens of shorter focal length than that of the triple and disposed nearer the air space. The front triple may be cemented and the rear may comprise a cemented doublet and a single. A field flattener and a graticule are provided behind the rear groups. (Optical data are given.)
Patent GB-820848-A (GB)
Title: Improvements in or relating to cigarette-feeding apparatus
IPC: A24C5/33
Filed: 1955-06-03
Abstract: The subject-matter of this Specification is included in that of Specification 820,845, the claims being directed towards the conveyer transferring cigarettes from one catcher band to the other.
Patent GB-130668-A (GB)
Title: Improvements in Airships.
Inventor: ROBERTS ARTHUR JAMES
IPC: B64B1/00
Filed: 1918-03-08
Abstract: 130,668. Roberts, A. J. March 8, 1918. Aerial machines with aerostats; aerostats; cars. -An air-ship having a tri-lobe envelope 1 is arranged with the single lobe underneath and the other two lobes on top, and is fitted with a bal. lonet 3 in the lower lobe. Two cars 6 may be arranged as shown, being suspended from the upper lobes 1 and connected transversely by struts 7 passing through the envelope, or by external struts 8 which may provide a means of communication between the two cars. The ballonet, when deflated, is supported by guys 5 and also by the struts 7. Propellers 10 are arranged at the sides.
Patent GB-193057-A (GB)
Title: Improved method for reducing metallic oxides
IPC: C22B5/04
Filed: 1923-02-12
Abstract: 193,057. Berlin, D. W. Feb. 11, 1922, [Convention date]. Thermo-aluminic and like metal-extracting processes; alloys.-Alloys of silicon with aluminium are used as reducing-agents for metallic oxides, particularly oxides or ores of chromium or tungsten preferably first concentrated, for the production of the metals or their alloys. The powdered materials may be mixed together with suitable fluxes, and may be briquetted with the aid of water-glass or other binder. The reduction may be effected in a 'bath of molten metal for the production of alloys. Slag is removed from the reduced metal or alloy from time to time, and fresh portions of charge added. The Specification as open to inspection under Sect. 91 (3) (a) refers also to the use of alloys of silicon with iron, chromium, or manganese as reducing agents. This subject-matter does not appear in the Specification as accepted.
Patent GB-1145244-A (GB)
Title: Improvements in or relating to i.l.s. monitor systems
Inventor: BENJAMIN JOHN
IPC: G01R29/10
Filed: 1967-01-27
Abstract: 1,145,244. Monitoring radio navigation systems. MINISTER OF TECHNOLOGY. 12 Jan., 1968 [27 Jan., 1967], No. 4158/67. Heading H4D. A system for monitoring the signals from the localizer transmitter 7 of an I.LS. (instrument landing system) installation includes a series of spaced apart aerials which extend away from the approach end of a runway 1. The aerials 3, 4, 5, 6 may be located along an extension of the runway centre-line 2, where the difference of depth of modulation (D.D.M.) is nominally zero, or, as shown at 3<SP>1</SP>, 4<SP>1</SP>, 5<SP>1</SP>, 6<SP>1</SP>, along a line where the D.D.M. has a nominally constant value exceeding zero. The aerials are placed at heights which increase with distance from the runway, and their outputs are connected through equalizing pads to a diode or other type of switch which repeatedly samples them in turn (Fig. 2, not shown). The output of the switch is connected through an I.L.S. receiver to a recorder. If the speed of scanning is sufficiently high, average values of D.D.M. are recorded but if it is low, individual values of D.D.M. at the aerials are recorded.
Patent GB-1040176-A (GB)
Title: Chromanols and their derivatives
IPC: C07D311/92
Filed: 1963-02-28
Abstract: The oxidation of various animal and vegetable fats and oils may be inhibited by the use of compounds of the general formula <FORM:1040176/C4-C5/1> in which -OR3 is a C1- 6 alkanoyloxy radical, the hydroxy radical or the phosphate radical, R and R1 are both methyl or both methoxy or are joined to form a -CH = CH-CH = CH-radical and R2 is a hydrogen atom or a hydrocarbon radical containing up to 45 carbon atoms.  Reference has been directed by the Comptroller to Specification 947,643.ALSO:Compounds of the general formula <FORM:1040176/C2/1> in which R and R1 are both methyl or both methoxy or are joined to form a -CH = CHCH = CH- radical, R2 is a hydrogen atom or a hydrocarbon radical containing up to 45 carbon atoms, and OR4 is a C1- 6 alkanoyloxy radical or the phosphate radical are prepared by hydrogenating, in the presence of a noble metal catalyst, a compound of the general formula <FORM:1040176/C2/2> in which R, R1, R2 and OR4 are as defined above. The alkanoyloxy esters may be converted to the corresponding free hydroxy compounds by removal of the ester group, e.g., by the action of lithium aluminium hydride. The 6-chromonyl phosphate of Vitamin K1(20) may be prepared by hydrogenating, in the presence of a noble metal catalyst, the dibenzyl phosphate of Vitamin K1(20) 6-chromenol.  The invention also comprises compounds of the general formula <FORM:1040176/C2/3> in which OR3 represents a C1- 6 alkanoyloxy radical, the hydroxy radical or the phosphate radical.  Examples are given.  Reference has been directed by the Comptroller to Specification 947,643.
Patent GB-845500-A (GB)
Title: Novel acetophenone and iú¾ú´quinoline derivatives and a process for the manufacture thereof
Filed: 1959-02-06
Abstract: The invention comprises compounds of the formula: <FORM:0845500/IV(b)/1> where R1, R2 and R3 are alkyl or alkoxy groups (any adjacent pair of which alkoxy groups may be combined as alkylenedioxy) and R4 is an alkyl group and where the broken lines denote that the group attached is optional.  The compounds may be prepared by acylating an isoquinoline compound of the formula: <FORM:0845500/IV(b)/2> to give the 1-methylene derivative of the formula:  <FORM:0845500/IV(b)/3> which is then treated with a dilute mineral acid to open the nitrogen containing ring.  The acylation may be carried out by means of an acid anhydride e.g. acetic, propionic or benzoic anhydride and the 1-methylene intermediate need not be isolated. Examples describe the preparation of (1) 2-(b -acetamido-ethyl)-4,5-dimethoxy, (2) 2-(b -propionylamido-ethyl)-4,5-dimethoxy, (3) 2-(b -benzamido-ethyl)-4,5-dimethoxy, (4)2-(b -acetamido-propyl)-4,5-dimethoxy, (5) 2-(b -acetamido-propyl)-4,5-dimethyl, (6) 2-(b -acetamido-ethyl)-4-methoxy, (7) 2-(b -acetamidoethyl)-4,5-methylenedioxy, and (8) 2-(b -acetamido-ethyl)-4,5,6-trimethoxy acetophenone.  The preparation of the methylene intermediates is also described.
Patent GB-568093-A (GB)
Title: Improvements in and relating to the manufacture of extruded food preparations
IPC: A21C11/00
Filed: 1943-03-16
Abstract: 568,093. Extruding macaroni, spaghetti, &c. KNOCH; H:, and DRYFOOD, Ltd. March 16, 1943, No. 4253. [Class 87 (ii)] The paste is fed by a worm 8 through a perforated plate 9 into a vacuum chamber 1, and thence extruded by a worm 2 (or by a hydraulically-operated piston) through a die plate 3 of about # " to ¥" in thickness. Specification 568,094 is referred to.
Patent GB-1294192-A (GB)
Title: A method of, and apparatus for, reconditioning liquid substances that have been contaminated with micro-organisms
Inventor: BLATTER MAX
IPC: A61L2/20
Filed: 1970-01-29
Abstract: 1294192 Recovering used lubricants M CLATTER 29 Jan 1970 [24 Nov 1969] 4280/70 Heading C5E [Also in Division B1] A liquid, e.g. lubricating oil, is reconditioned by being introduced into a container, and agitated and ozonized in two consecutive stages in the containers. The liquid is introduced into the container 1 through a pipe 6 terminating in a pressure ozonizing device 7, Fig. 3 (not shown), having a shell surrounding the end of the pipe which is closed but has lateral slots, an ozone supply pipe 11 extending inside the pipe and ending in hollow cylindrical ceramic distributors. The oil and ozone leave the bottom of the shell which has a sliding gate for adjusting the pressure inside the shell. Ozone also enters the container through a pipe 15 leading to distributors 19 enclosed by driven endless fine mesh wires 23a, 23b. Agitators 25, 26 have blades 31, 32 having openings 33, 34. Alternatively, the blades may be bars; horseshoes, paddles, crossbars, propellers or turbine blades.
Patent GB-357058-A (GB)
Title: Improvements in apparatus for gauging or measuring the calibre of gut skins
IPC: G01B3/20
Filed: 1931-02-11
Abstract: 357,058. Linear-dimension gauges. GRœNEWALD, A., 70, Bismarckstrasse, Cologne, Germany. Feb. 11, 1931, No. 4286. Convention date, Feb. 17, 1930. [Class 106 (ii).] For measuring the calibre of gut skins they are positioned in turn over a mandrel divided longitudinally into two halves a, b which are moved relatively to one another over a scale calibrated to read the diameter of the gut. In the example described the section a is secured to the frame c the section b being mounted on a slide d1 which is displaced over the frame by a lever e and link f to stretch the gut. A scale g calibrated for diameters is provided on the frame.
Patent GB-124777-A (GB)
Title: Improvements in the Control of Machine Guns and the like.
IPC: F41A19/05
Filed: 1916-03-24
Abstract: 124,777. Martinsyde, Ltd., Martin, H. P., and Lucas, O. D. March 24, 1916. Machine guns; fire between aireraft propeller blades, controlling and synchronizing. - Consists in electric firing-mechanism for use when firing between the propeller blades of aircraft. The mechanism comprises the combination of a cartridge having an electric detonator, a contact device adapted to be closed by the closing movement of the breech mechanism, an external firing- switch, and a commutator, or generator containing a commutator, situated on or geared to the propeller shaft so that the current passes only when the blade is out of the line of fire, the necessary lead being provided for. In the arrangement shown diagrammatically in Fig. 3, the cartridge detonator a is in the secondary circuit of a trembler coil s, and a commutator t, breech contact o, and firing-switch p are in the primary circuit. A modification of the breech mechanism of a Lewis gun is described and forms the subject-matter of Specification 124,802. The detonator of the cartridge consists of a hollow insulating-plug c, Fig. 4, containing the fulminate, a central pin d in the plug, and an anvil b. A spark passes between the pin d and the anvil b. The cartridge can also be fired by percussion.
Patent GB-907545-A (GB)
Title: Air conditioning apparatus for textile machines
IPC: D01H13/30
Filed: 1960-02-08
Abstract: 907,545. Cleaning textile spinning machines. SULZER FRERES S.A. Feb. 8, 1960 [Feb. 10, 1959; Nov. 4, 1959], No. 4399/60. Class 120 (3). Curtains of compressed air 206 issuing from downwardlydirected nozzles 205 extending above and along opposite sides of a row of spinning machines serve to combine dust generated thereby and allow the operative a clear view of the moving threads. Dust settling is prevented by a conventional travelling blower 210 drawing air from slots 207 in the nozzle feed pipes 203 connected to a blower 201, Fig. 1 (not shown), drawing in part through broken thread end catching nozzles 212 and a suction duct 214 and in part from the atmosphere through a filter 219 and a duct 218. Blower intake air is conditioned by a water spray. In a modification the outer side of each air curtain 286, Fig. 4 (not shown), is guided by a transparent plastic vertically adjustable screen formed of individual strips between 10 and 50 cm. wide. Specification 751,043 is referred to.
Patent GB-918971-A (GB)
Title: Pyrolysis of fluoroform
IPC: C07C17/269
Filed: 1961-02-06
Abstract: Fluorocarbons, particularly perfluorinated olefines such as tetrafluoroethylene and perfluoropropene, are prepared by pyrolysing fluoroform at 700-1500 DEG C., e.g. in a heated tube.  The pressure used affects the product distribution.  In preparing perfluoropropene, unreacted fluoroform and tetrafluoroethylene are preferably recycled.  In examples, the main products are C2F4 and C3F6; other products obtained, depending on the pyrolysis conditions, are perfluoroisobutylene, other perfluoro C4 compounds, C3HF7, C3F8, C2HF5 and C2F6.
Patent GB-268305-A (GB)
Title: Improvements in oil switches
IPC: H01H33/55
Filed: 1927-02-17
Abstract: 268,305. Akt.-Ges. Brown, Boveri, et Cie. March 29, 1926, [Convention date]. Oil switches. - In order to limit the gaseous pressures produced on break in an oil switch the air volume above the oil surface in the switch container (or total volume in all the containers where there are two or three switch tanks) amounts for each 100,000 maximum three-phase kVA rupturing capacity to at least 50 + 1/6 E litres (or in the case of single-phase current to 2/3 of this amount), E being the rated line voltage of the switch in kV.
Patent GB-1449382-A (GB)
Title: Fabric treatment apparatus
IPC: D06B13/00
Filed: 1974-01-31
Abstract: 1449382 Treatment of fabrics with liquid A BERTOLDI 31 Jan 1974 [13 Feb 1973 17 Sept 1973] 04539/74 Heading DIL Textile fabrics are forcibly treated with liquid by passing the textile through a liquid permeable channel 10 partly immersed in a liquid treatment tank whilst the channel is being moved towards and away from the base of the tank, thereby causing the treatment liquid to be alternately forced through and drained out the textile. As shown endless textile loop 6 is passed from roller 9 into the curved channel 10 at 19 partly immersed in the treatment liquid tank 1, the curvature of the floor 4 corresponding to that of the channel 10. The inlet end 19 of the channel 10 is hinged at 21 whilst the other lower end 12 is raised or lowered on rotating cam 29, driven by motor 33 by chain 35 via gears 34. The channel has a rectangular cross-section [Fig. 3 (not shown)] and is constructed of elongated upper and lower curved tubular members 11 supported by tubular cross members 13 and stringers 15 and 16. The channel narrows towards its lower end 12 thereby causing the textile to pile up. The movement of the textile through the channel is aided by sloping baffles 50 which urge liquid through the textile. The treated textile is removed from the channel by roller 5 and is recirculated via a pair of rollers 7 and 8. Alternatively the channel may be raised or lowered by a complex lever arrangement [Fig. 5 (not shown)] driven by piston (71).
Patent GB-1218092-A (GB)
Title: Improvements in or relating to reciprocating pumps
IPC: F04B7/02
Filed: 1968-01-30
Abstract: 1,218,092. Reciprocating pumps. J. I. CASE CO. Jan. 30, 1968 [Jan. 31, 1967], No. 4626/68. Heading F1A. In a hydraulically actuated pump the valves are hydraulically actuated and the pump and valves are controlled by solenoid actuated valves such that at the end of each stroke both the inlet and outlet valves are closed. Switches are actuated by pressure build up in the actuating circuit due to the closing of all valves to initiate the next cycle.
Patent GB-1291980-A (GB)
Title: Liquid pump, particularly an oil pump for refrigerating machines
IPC: F04D13/06
Filed: 1970-01-30
Abstract: 1291980 Axial-flow pumps DANFOSS A/S 30 Jan 1970 [1 March 1969] 4652/70 Heading F1C A liquid pump, e.g. a lubricant pump for a refrigerator motor-compressor unit, comprises a tubular sleeve 16 provided with blades 18 for impelling liquid interiorly of the sleeve, each blade being constituted by a corresponding tab formed in and angularly displaced from a closed end of the sleeve. The sleeve 16 is deep-drawn, with a base 17 comprising a conical part 19 and a central planar part 20. Four incisions 21 extending circumferentially and four incisions 22 running substantially radially from the circumference to the central part 20 are made in the base 17, and the tabs thus formed are bent into the interior of the sleeve 16 to form the blades 18. A part of the peripheral edge of each blade 18 is bent over at 24 in the axial direction to strengthen the blade and prevent leakage around the peripheral edge.
Patent GB-575368-A (GB)
Title: Improvements in gramophones
IPC: G11B17/02
Filed: 1944-03-13
Abstract: 575,368. Magazine gramophones. AKTIEBOLAGET GYLLING & Co. March 13, 1944, No. 4680. Convention date, March 13, 1943. [Class 40 (ii)] In a magazine in which records to be played are stored on a central post, the lowermost record on the stack is displaced so as to fall on to the turntable by engagement of a pusher member moving with the tone arm as the latter is swung outwardly after the preceding record has been played. The tonearm 7 is pivoted about a horizontal axis 19, Fig. 3, on a bracket secured to a sleeve 11 which rotates within sleeves 14 and 15 secured above and below the motorboard 1 respectively, to enable the pick-up to be swung horizontally across the record and surrounds a push rod 13 by which vertical movement of the pickup is produced. The pusher member 8 is secured to the sleeve 11 and extends to the level of the lowermost record on the stack. The pusher member can form part of the tone arm if desired. The records are edge supported by a bracket 22 which can be raised by operating a knob 30 carried on a lever 28 pivoted at 29 underneath the motorboard. This lifts the lowermost record out of the path of member 8 and permits repeated playing of a record already fed to the turntable. Mounted below the record stack is a bell-crank lever which is urged upwardly by a spring but has an arm 41 which extends under the stack so that the lever is normally held down. When the stack is exhausted the bellcrank lever rises and the turned-up end of its other arm 42 obstructs the outward movement of the tonearm. This rotates the lever thereby actuating a switch to stop the machine with the tonearm at the position shown chain dotted in Fig. 1 and before member 8 reaches its record engaging position. When the machine is reloaded and re-started the tonearm completes its outward swing before swinging inwardly and a record will be fed to the turntable. The end 42 of the bell crank lever is bevelled to permit the inward movement of the turntable in playing the last record of the stack.
Patent GB-1419542-A (GB)
Title: Protective arrangement for field effect transistors
IPC: H03K17/0812
Filed: 1973-01-31
Abstract: 1419542 Protecting transistors MITSUBISHI DENKI KK 31 Jan 1973 [31 Jan 1972] 4754/73 Heading H3T In an arrangement for the prevention of the application of excessive input voltages to an insulated gate field effect transistor (IGFET), the drain to source path of a second IGFET 22 is connected between the gate of the first IGFET and earth, while its gate is connected to the source of a third IGFET 24. The third IGFET 24, which has a higher threshold than the others, has its source connected to earth via a resistor 28, its drain connected to the gate of the first IGFET, and its gate connected to the input terminal 14 and via resistor 12 to the gate of IGFET 10. Modifications comprise the connection together of the gate and source of the third IGFET, the resistor (12) being located either between their join and the gate of the first IGFET (Fig. 2, not shown) or between their join and the input terminal (Fig. 3, not shown). The resistor 28 may alternatively be replaced by an IGFET (Fig. 4, not shown). Reference has been directed by the Comptroller to Specification 1,179,388.
Patent GB-365363-A (GB)
Title: Landing gear for aircraft
IPC: B64C25/12
Filed: 1931-02-16
Abstract: 365,363. Aircraft landing-gear. ARMSTRONG WHITWORTH AIRCRAFT, Ltd., SIR W. G. and LLOYD, J., Whitley, near Coventry. Feb. 16, 1931, No. 4825. [Class 4.] In a retractable aircraft landing-gear, the landing-member is mounted on an arm pivotally supported within the aircraft in such a manner as to allow the landing-member to swing from it landing position downwardly and into the interior of the aircraft. In one form a landing wheel 2 is mounted on an axle 3 keyed to a hinge pin 9 rotatably mounted in a V-shaped strut 4 pivoted within the aircraft. A leg 6 incorporating shock-absorbing means and housed within the aircraft supports the outer end of the strut 4. Means, e.g. bevel gearing, are provided for turning the wheel 2 down and into the aircraft body. Locking-means, e.g. a spring-pressed bolt, is provided for detachably securing each axle against the strut. Sliding or other covers may be provided for closing the cavities in the body through which the landing-gear is retracted.
Patent GB-1058541-A (GB)
Title: Component package
IPC: H01L23/488
Filed: 1964-02-05
Abstract: 1,058,541. Semi-conductor devices. TRW. SEMICONDUCTORS Inc. Feb. 5, 1964 [March 22, 1963; Sept. 27. 1963], No. 4867/64. Heading H1K. A semi-conductor assembly comprises a ceramic base having pins extending through it to provide connections to external leads and to internal connections with the semi-conductor element, which is mounted on the upper surface of the base, a lower, casing member of metal, fused to the ceramic base and a metallic upper, cover member sealed to the lower casing member. In one embodiment the ceramic base 80 is disc-shaped and has metallized holes through it in which pins 82, 84 are bonded. External strip connections 76, 78 are attached to these pins and internally, for example, the pin 84 is connected to a copper plate 94 on which the semi-conductor element 90 is mounted while the pin 82 is connected to the device through a link 92. A lower, casing member 100 is fused to a suitable, annular, metallized area on the base 80 and a flanged cap 70 is sealed to this by cold welding. The device 90 is covered by a suitable sealing compound 102 and a copper plate 98 is fused to a metallized surface 96 to improve heat conduction to a chassis or other mounting member. This arrangement provides short leads, so facilitating high frequency operation and the provision of large area metal surfaces in the mounting plate 94, the cap 70 and the plate 98 ensures rapid heat dissipation. Preferably copper is used throughout for the metal components and this may be plated with gold or silver; the absence of ferrous metals avoids interference with operation by stray magnetic fields. The number of connections and pins may be increased as necessary, the copper plate 98 may be welded to a mounting stud or, to save space, two assemblies may be bonded together, cover to cover.