baber/WOPTO huggingface dataset:
Patent GB-787603-A (GB)
Title: Coupling arrangement for travelling wave tubes
IPC: G05D16/06
Filed: 1955-09-09
Abstract: 787,603. Impedance transformation. STANDARD TELEPHONES & CABLES, Ltd. Sept. 9, 1955 [Sept. 14, 1954], No. 25850/55. Class 40 (8). [Also in Group XL (a)] A travelling-wave amplifier tube of the helix type has an uninterrupted magnetic focusing system 14 waveguide feeders 9 of rectangular cross-section separated by the magnet system and within the magnet system and coaxially surrounding the tube at each helix end a coaxial line matching transformer the inner and outer conductors 12, 13 of which are joined to opposite walls of the waveguide with the inner conductor 12 terminating adjacent the end of the helix 8, the outer conductor 13 having a radial portion beyond the end of the inner conductor 12 adjacent to the helix to provide a longitudinal high-frequency electric field coaxial with the helix. Uninterrupted means that the magnet system which produces a uniform focusing field extends without interruption from gun to collector, i.e. without being interrupted by waveguide feeders. The delay line comprises a helix 8 carried by rods 6, and the coaxial line conductors are capacitively coupled to the inner choke sleeve members 3. The difference between the radii of the inner and outer conductors of the coaxial line is equal to the dimension 15 of the waveguide feeder for correct impedance matching between them, and impedance matching with the inner choke sleeves 3 is improved by stub 9 with movable piston 11. The collector 4 has cooling fins 5.
Patent GB-1317825-A (GB)
Title: Anticorrosive multi-layer metallic coatings
IPC: C25D5/12
Filed: 1970-05-28
Abstract: 1317825 Electro-plating NIHON KAGAKLI KIZAI KK 28 May 1970 [28 May 1969] 25860/70 Heading C7B A substrate is coated electro-lytically with Ni-P, Co-P or Ni-Co-P layer and then a Ni layer. The substrate may be Fe, steel, Zn which maybe coated with Cu or A-B-S resin chemically coated with Cu. The layers may be subsequently coated with Cr. Examples of baths are (g/1) NiSO 4 . 6H 2 O 100 to 300, NiCl 2 . 6H 2 O 50 to 200, H 3 PO 3  20 to 100, H 3 PO 4  50 to 100, pH 2 or less, temperature 60 to 80C. current density 5-10 Al dm<SP>2</SP>; CoSO 4 . 6H 2 O 200 to 300 g/l, H 3 PO 3  30 to 50 g/l, H 3 PO 4  60 to 100 g/l, pH 2 or less, temperature 50 to 80C., current density 40 to 60 A/dm<SP>2</SP>. The adverse effect of ferric ions in the baths is eleminated by adding finely particulate iron. The top Ni coating may be electro-plated with Cr.
Patent GB-1470999-A (GB)
Title: Device for closing a round section hot air or exhaust gas duct
IPC: F16K1/22
Filed: 1974-06-11
Abstract: 1470999 Butterfly damper L & C STEINMULLER GmbH 11 June 1974 [7 July 1973] 25867/74 Heading F4B [Also in Division F2] A device for closing a round section hot air or exhaust gas duct comprises a resilient cylindrical shroud 2 surrounding a butterfly damper having a vane 1 with a fin portion 6 that runs around, the entire circumference of the vane. A ring 3 connects the shroud 2 in a seal tight manner with the casing 4 of the duct. The fin 6 thermally screens a band-like strip of the shroud adjacent the closing plane 7/8 of the damper, so that temperature changes do not cause stresses at the contact between the vane and the shroud.
Patent GB-927858-A (GB)
Title: A method for the preparation of diaryl ketones
IPC: C07D311/92
Filed: 1959-07-28
Abstract: Benzophenone or substituted benzophenones having one or more alkyl-, alkoxy-, phenoxy-, chloro-, or bromo-substitutents in each benzene nucleus, are prepared by heating, in the temperature range of about 25 DEG  to 235 DEG C., benzene or a substituted benzene which has 1, 2, 3 or 4 alkyl-, alkoxy-, phenoxy-, chloro- and/or bromo-substituents with a 2,6-disubstituted benzoic acid in the presence of a catalyst, preferably phosphorus pentoxide, phosphoric acid or combinations thereof, which causes the carboxyl group to be dissociated from the 2,6-disubstituted benzoic acid. The latter term is used in a wide sense; for it not only includes 2,6-dimethylbenzoic acid but also such aromatic acids as 1,2,3,4,5,6,7,8-octahydroanthracene-9-carboxylic acid.  Example I describes the preparation of di-p-anisyl ketone by heating anisole with 2,3,5,6-tetramethyl-benzoic acid in the presence of polyphosphoric acid.  The example also refers briefly to the reaction between octadecyl phenyl ether and 2-ethyl-6-methyl-benzoic acid using stannic chloride as catalyst. Example 2 describes the preparation of 4,41-di-(p-phenoxybenzoyl) diphenyl ether by reacting 4-phenoxy-2,3,5,6-tetramethylbenzoic acid with diphenyl ether. The reaction of 4-methoxy- 2,3,5,6-tetramethyl-benzoic acid with diphenyl ether is also referred to.  Example 3 describes the preparation of 4,41-dichlorobenzophenone by reacting chlorobenzene with 1,2,3,4,5,6,7,8-octahydroanthracene-9-carboxylic acid.  The reaction of 1,3,4,5,7,8,9,10- octahydro-naph- [2,3-c] [2,5] oxaazepine-11-carboxylic acid with 1-bromo-3-chloro-benzene is also referred to.  Example 4 describes the preparation of 2,4,21,41-tetra-tert.butyl-benzophenone by reacting 2,4-di-tert.-butylbenzene with 2,3,4,5, 6,7,8-heptahydrothiaanthracene- 10-carboxylic acid.  The preparation of tetramethyl-benzophenone is also referred to. Examples 5 and 6 relate to the preparation of octamethylbenzophenone and dimethyl-di-tert.-dodecylbenzophenone respectively.
Patent GB-1530365-A (GB)
Title: Personal parachute harness
IPC: B64D17/30
Filed: 1976-06-22
Abstract: 1530365 Parachute harness AERAZUR CONSTRUCTIONS AERONAUTIQUES 22 June 1976 [23 June 1975] 25942/76 Heading A3V Buttock-and thigh-strap 5 of a personal parachute harness passes through rings 3 on lateral risers 1, and optional strap loops 12 mounted on the strap itself to terminate in adjusting buckles 7 connected by straps 6 passing behind risers 1 and being looped at 13 around chest bar 14. Braces 8 are connected to means 2 for releasing the parachute and adjusting buckles 9. The latter are interconnected by a back belt 10 passing through rings 11 stitched to risers 1. One adjusting buckle 7 only may be provided. A chest parachute and auxiliary equipment may be hooked to devices 4'. In Figure 2 (not shown) straps 6, 8 are connected to risers 1, and snap hooks 24, 24' replace bar 14 and buckles 7.
Patent GB-1426825-A (GB)
Title: Air-fuel mixture supply to precombustion chamber internal combustion engines
IPC: F02M13/04
Filed: 1973-05-31
Abstract: 1426825 Regulating IC engine mixture supply HONDA GIKEN KOGYO KK 31 May 1973 [31 May 1972] 26044/73 Heading F1B A main throttle valve 5 and an auxiliary throttle valve 6 of carburetting apparatus for controlling the supply of a mixture to a main combustion chamber 1 and a richer mixture to a pre-combustion chamber 3 respectively, are connected by a cam 7 and a lever 8 providing a predetermined relation between the movements of the two valves and by rods 9, 11 with an intermediate diaphragm 14. The diaphragm 14 is contained in a casing and defines therewith a chamber 12 connected to the atmosphere through a hole 15 and a chamber 13 connected to the atmosphere through a restriction 16 and a check-valve 17. In operation, when the valve 5 is opened suddenly the valve 6 is opened at a greater rate than the rate of opening provided by co-operation of the cam 7 and follower 26 by the rods 9, 11. The follower 26 is then returned by the spring 19 to contact the cam 7 at a rate permitted by the flow of air into the chamber 13 through the restriction 16. On sudden closure of the valve 5 the valve 17 opens to permit the spring 19 to retain the follower 26 in contact with the cam 7.
Patent GB-1304135-A (GB)
IPC: C09D7/45
Filed: 1971-04-19
Abstract: 1304135 Fluoroalkyl sulphonamides UGINE KUHLMANN 19 April 1971 [17 April 1970] 26180/71 Heading C2C [Also in Divisions C1 and C5] Compounds of formula C n F 2n+ 1 (CH 2 ) a SO 2 N(R 1 )(CH 2 ) p NR 2 R 3  wherein C n F 2n+1  is a C 1-20  perfluoroalkyl group, n is 2 to 10, p is 0 to 10, R 2  and R 3  are C 1-6  alkyl groups and R 1  is hydrogen, a C 1-6  alkyl group or a group C n F 2n+1 (CH 2 ) a SO 2 -, are prepared by reaction of a fluoroalkyl sulphonyl chloride with a diamine. Mixtures of compounds wherein R 1  is hydrogen or C n F 2n+ 1 (CH 2 ) a SO 2 - may be obtained. The products are surface-active and spreading agents and may be used in polishing waxes, greases, varnishes and paints.
Patent GB-881785-A (GB)
Title: Power plant for short forward or vertical take-off aircraft
IPC: B64C29/00
Filed: 1959-07-30
Abstract: 881,785. Vertical take off aircraft. BMW TRIEBWERKBAU G.m.b.H. July 30, 1959 [Aug. 1, 1958], No. 26185/59. Class 4. [Also in Groups XII and XXVI] Aircraft power plant for providing vertical or short forward take off of the aircraft is characterised in that one or more combustion chambers with downwardly pointing outlet nozzles is/are located inside the wing profile of the aircraft, fresh air for combustion being supplied to said chambers directly or indirectly by a forward propulsion unit and fuel being introduced through a rotary atomiser provided in each of the chambers. The power plant 1, in the embodiment a gas turbine, is connected through disconnectable couplings (not shown) to a propeller 3 and an air compressor 5, the outlet of the latter being connected by a duct to the inlet 13 of one or more combustion chambers 8 located in each wing. The inlet of compressor 5 may be connected by a duct 10 with a boundary layer suction slot 11 in the upper surface of each wing. The power plant 1 may be a by-pass engine and the air for combustion chambers 8 would then be supplied from the by-pass duct, compressor 5 being dispensed with. Each combustion chamber is formed by a chamber 20 surrounded by an annular duct supplied with air from intake 13 to cool the chamber 20, to which combustion air is admitted from the annular duct through apertures 18. The intake 13 houses fixed blades 16 and a rotary atomiser 15 carrying axial-flow turbine blades 17. Fuel is passed to atomiser 15 through a conduit 19 and combustion gases are directed by vanes 21 to a nozzle 14 directed downwards from the wing undersurface. The rotary atomiser may be constructed as a radial flow turbine.
Patent GB-334921-A (GB)
Title: Improvements in and relating to the use of vat dyestuffs enolic sulphuric acid esters
IPC: D06P1/28
Filed: 1929-03-07
Abstract: 334,921. Fairweather, D. A,. W., Thomas, J., and Scottish Dyes, Ltd. March 7, 1929. Divided on 334,902. Anthraquinoncazines.-The Specification describes the isolation and purification of bodies believed to be tetrasulphuric esters of tetrahydrodianthraquinoneazines, by the processes claimed in Specification 334,902 from the solution obtained by alkaline oxidation of 2-aminoanthrahydroquinone-9 : 10-disulphuric ester or its substitution products having the 1-position free, but the claims are limited to the use of these products in dyeing or colouring.
Patent GB-953324-A (GB)
Title: Improvements in or relating to machines for manipulating metal into shapes
Inventor: SCOTT WILLIAM MARCUS
IPC: B21D19/14
Filed: 1959-07-31
Abstract: 953,324. Making gate posts; bending; winding; twisting. I. SCOTT. July 14, 1960 [July 31, 1959; Sept. 9, 1959; Nov. 23, 1959], Nos. 26362/59, 30798/59 and 39651/59. Headings B3A and B3E. A machine for shaping strip sheet or bar metal stock comprises a base support to which is secured a rear support, a front support associated with the base support on guide members adapted to allow the front support to be easily removed or separated from the base support, and a forming tool locatable between the front and rear supports and adapted to be rotated by a driving source and to engage one or more pieces of metal to be shaped by forming around said tool. Three metal strips, guided over a roller 13 adjustable along front and rear support plates 5 and 2, are gripped at one end in a longitudinal slot 11 in a forming tool 10 having a driving shaft 9 received in the plates 5 and 2. The shaft 9 is rotated, through gearing, by a motor 20 or by hand. The former 10 may be made from metal tubing or a piece of metal machined to spiral cross-section. The former 10 may be rotated one or more than one revolution, in which latter case a plurality of convolutions are wound which may later be separated. To remove the bent strips the front support plate 5 is slid off guides 3, secured to the rear support plate 2, away from a base-plate 1. Alternatively the former 10 may terminate at 10a a short distance behind the plate 5 so that bent strips may be passed over the shaft 9. A modified former, Fig. 2, includes a first section comprising a part tubular member 32 with its mouth closed by angle iron 34 welded thereto, a second length of angle iron welded at one lip of the mouth to define an opening 39 into which the end of the workpiece 40 can be received, and a catch piece 42 provided on the other lip of the mouth. A second section comprises a part tubular member 43 with a projection 41 on one lip engaging the catch piece 42 and an angle iron 47 on the other lip to locate a third part tubular section 48. Distance-pieces 49 are provided. In another modification, Fig. 3, the former comprises a sheet-metal jacket 50 with end-plates 51, 52 welded thereto and carrying shafts 54, 55. The edges of the jacket 50 define a slot 53 and the plate 51 and shaft 54 are diametrically slotted. The former could be built from two L-sectioned angle strips. The former could be used to produce triangular sectioned members. The former may have a hexagonal, octagonal or other polygonal section. A hollow member made in the apparatus may be longitudinally welded and cupped at one or both ends to form a gatepost to which gate supporting brackets are welded. To twist a bar 61, Fig. 4, in the apparatus one end of the bar is held in a socket 59 on sleeve 58 carried by an extension 8 of the front plate 5 and the other end is inserted in an aperture 28 in the final gear 27 of the drive.
Patent GB-163633-A (GB)
Title: Improvements in hand trolleys or trucks
IPC: B62B1/14
Filed: 1920-09-15
Abstract: 163,633. Bocquet, F. H. Sept. 15, 1920. Hand-trucks.-An all-metal hand-truck for agricultural purposes has a frame consisting of a pair of bars a, b on each side arranged in V-formation and connected by cross-bars c and longitudinal stays h. The bars a carry handles g and the bars b are flanged outwardly at their ends and connected by a bar d having hooks f for supporting pails. The frame carries a removable box or tank e, and is supported on a carriage consisting of extensions of the bars a connected to bent bars j connected to the bars b and carrying the wheels i, the bars j having extensions n to serve as supports. A swinging support is also carried by the bar d and may be hooked to a cross-bar c.
Patent GB-1048012-A (GB)
Title: Improvements in or relating to transistor switching circuits
Inventor: WALSH JAMES LEO
IPC: H03K19/086
Filed: 1963-07-04
Abstract: 1,048,012. Transistor switching circuits. INTERNATIONAL BUSINESS MACHINES CORPORATION. July 4, 1963, No. 26474/63. Heading H3T. A transistor has a load switchable between high and low resistance states and is arranged such that when the resistance state is high the transistor is saturated and when it is low it is unsaturated and carries a higher current. In Fig. 3, when the load transistors 20 and 60 are non-conducting transistor 23 is saturated and its emitter current flows to its base. If either or both transistors 20 or 60 are rendered conductive transistor 28 comes out of saturation and an output signal is available at the collectors 20 and/or 60 or at the collector of 28. The circuit may be inhibited by rendering conducting a transistor 68 so as to divert the emitter current supply from 28. An inverted output may be obtained from the collector of a further transistor 92 (Fig. 4, not shown) having its emitter connected to the base of 28, the further transistor being rendered conducting by the base current of 28 when the load transistors 20 and 60 are non-conducting. An " exclusive OR " circuit may be formed (Fig. 7) from two sub-circuits each comprising transistors 20, 28 and 68 with each input signal applied in parallel to the normal input of a respective one and the inhibit input of the other. No output current flows when both signals are " 0 " or both " 1 " but if either alone is " 1 " an output will be obtained from the common collector load of the transistors 20. Fig. 7 illustrates a 3-level circuit. When V IN is positive transistor 20 cuts off and - V appears at the output terminal. When V IN is near earth, transistor 100 becomes unsaturated and its current flows in the output circuit. If V IN is positive both transistors 100 and 28 become unsaturation and a higher current flows in the output circuit.
Patent GB-323024-A (GB)
Title: Improvements in or relating to stopping mechanism for gramophones
IPC: G11B3/00
Filed: 1928-09-17
Abstract: 323,024. Oliver Fell Control, Ltd., and Oliver, C. Sept. 17, 1928. Starting and stopping. - Automatic stopping - mechanism for gramophones, shown as applied to a machine in which an electric pick-up is employed, comprises a plate C pivotally mounted on a base-plate A carrying the swivelling pick-up support N, the plate C having pivoted on it a lever I adapted to stop the machine by applying a brake pad P to the turntable, or by opening a switch in the motor circuit. The lever I is held in the position in which it allows the machine to run, when a catch K<1> provided at the end of a bell-crank lever K<2>, pivoted to the main lever at K, hooks over an abutment R'. In use, the plate C is first turned anti-clockwise (Fig. 1) to the outer limiting position, by means of a milled head F connected to it. The pick-up arm N is then swung inwards until the stylus can be placed on the finishing point of the record. During this movement, a stud N<2> engages a lug C' on the plate C and sets the plate to a position corresponding to the final position of the stylus. After the lever I has been shifted by hand to start the machine, and the catch K<1> has been hooked on to the part R<1>, the pick-up is placed on the starting-point and the record is played. A stud M on the arm N trips the lever K<2> when the end of the record is reached, so releasing the catch K<1> and allowing a spring J to move the lever I to stop the machine. For the purpose of automatically breaking the circuit of the pick-up when the machine is stopped, the catch K<1> serves to complete the connections between one terminal of the pick-up and an amplifier. When the lever I moves to the stopping position, as shown in chain lines in Fig. 3, the catch K<1> bears against an insulating strip L, and the circuit is then broken. The automatic stopping- mechanism may be applied to a machine having an ordinary sound-box and tone-arm.
Patent GB-616570-A (GB)
Title: Improvements relating to ovens
IPC: A47J39/00
Filed: 1946-09-04
Abstract: 616,570. Ovens. LYONS & CO., Ltd., J., and SCOTT, H. J. Sept. 4, 1946, No. 26593. [Class 126] An oven comprises a heating chamber 2 provided with a door 3 and on the interior side walls, runners 7 at the rear ends of which are upstanding walls 8a bearing slots 8b to receive hinge pins 9a of cover plates 9 forming the lids of removable containers 6 supported by their flanges 6a on the runners 7. On raising the cover plates 9, which remain attached to the oven by the hinge pins 9a, the containers 6 may be slid out of the oven on the runners 7. The oven door 3 which opens on lower hinges 4 is held in a horizontal position by a stop 5.
Patent GB-957824-A (GB)
Title: Improvements in yarn twisting and doubling
IPC: D01H1/00
Filed: 1962-07-11
Abstract: 957,824. Up-twisting arrangement. HAMEL PROJEKTIERUNGS-UND VERWALTUNGS A.G. July 11, 1962 [July 26, 1961 ], No. 26597/62. Heading D1D. In up-twisting or doubling by withdrawing yarn or yarns overend from a package on a rotating spindle, the spindle is loaded by a mass, the moment of inertia of which together with that of the spindle is not less than that of the full cop, so that, at starting up, the total moment of inertia is at least twice as great, and is preferably three or four times as great, as the movement of inertia of the full package. As shown, the loading is effected by enclosing the packing with a cylindrical body 16 with or without a cover 18, the outside of the body being smooth or lacquered.
Patent GB-1317957-A (GB)
Title: Method and apparatus for switching over from manual to automatic  control of a motor-driven device adapted to be directed onto a  moving target
IPC: F41G5/06
Filed: 1970-06-02
Abstract: 1317957 Sighting RHEINMETALL GmbH 2 June 1970 [4 June 1969] 26654/70 Heading F3C In a method for switching over from manual to automatic control of a motor-driven device intended to be directed on to a moving target, after an initial phase an operator directs the motor-driven device manually on to the target by using a manual control to supply values ## and ## of the lateral and elevational velocities of the target to the motor-driven device for controlling movement thereof, at a point of time chosen by the operator the values ## and ## of the lateral and elevational angular velocities supplied by the manual control are replaced at least partially by values #*# and #*# or the lateral and elevational angular velocities of the target calculated by a computer on the basis of the values ## and ## supplied by the manual control, to provide an anticipatory control for facilitation or automation of target tracking. The values #*# and #*# of the lateral and elevational angular velocities supplied by the computer are adjusted to the values ## and ## of the lateral and elevational angular velocities supplied by the manual control before switching over from manual to automatic control. When switching from manual to automatic control, the values ## and ## of the lateral and elevational angular velocities coming from the manual control may not be completely replaced by the values #*# and #*# of the lateral and eleva- ;ional angular velocities supplied by the comouter so as to allow manual control to be used for correction purposes. The amount allowed for correction purposes may be continuously adjustable. In a gun having a motor-driven device mounted thereon, lead angles # and Á and the gravity compensation angle α of the gun are calculated by computer and the motoririven device is moved with respect to the barrel axis of the gun. The gun drives are controlled manually and the lateral and elevational angular velocities #*# and #*# for the gun are calculated by the computer, taking account of the variation with time #α of the gravity compensation angle α. The Specification describes a basic circuit diagram of a control system, a geometric illustration for devising the basic equations of the method, a block circuit diagram of the computer, an adapter device which is connected between the computer and the drives of the gun, and an auto-control device.
Patent GB-1018462-A (GB)
Title: Crimping device
IPC: D02G1/14
Filed: 1962-07-12
Abstract: 1,018,462. Crimping gears. MONSANTO CO. July 12, 1962 [July 21,1961], No. 26874/62. Headings D1F and D1W.  A gear for crimping a filament or yarn comprises a hub 16 having a plurality of spaced slots 17,with teeth 21 positioned in the slots and having lugs 23, 24 at each end, and a pair of end plates 27, 28, secured to the hub, with flanges 31 32 overlapping the lugs to hold the teeth in the slots, the radial length of the teeth, varying uniformily around the gear Fig. 3 (not shown) to form crimps with corresponding variation of size Fig. 4 (not shown). In use the gear is paired with a gear having teeth, all of the same radial length.