baber/WOPTO huggingface dataset:
Patent GB-1092215-A (GB)
Title: Oil-modified alkyd resins
IPC: C08G18/42
Filed: 1965-01-15
Abstract: Thixotropic solutions of oil modified alkyd resins are prepared by reacting (i) an oil modified hydroxyl group-containing alkyd resin having an hydroxyl number of 10-300, an acid number of 1-40 and an oil content of 20-80% by weight with (ii) a reaction product containing a free -NCO group of a polyisocyanate and a monohydroxyl compound containing at least 5C, either in the presence of an organic solvent, or in the melt, in which case an organic solvent is added to the reaction product.  The oil modified alkyd may be prepared by using free fatty acids or by transesterifying natural fats and oils in a first stage with a polyalcohol and then condensing with a polycarboxylic acid. Non-drying, semi-drying and air-drying oils and fats may be used in the transesterificaction stage.  The monohydroxyl compound may be a saturated or unsaturated monohydric alcohol e.g. ethanol, an ester of a carboxylic acid or an ether of a polyol and may be substituted by halogen atoms or nitro groups.
Patent GB-1299612-A (GB)
Title: Device for letting off flexible material from a storage carrier
Inventor: HARTHMAN FRANCIS PETER
IPC: D04C3/14
Filed: 1970-01-15
Abstract: 1299612 Braiding machines BRITISH INSULATED CALLENDERS CABLES Ltd 14 Jan 1971 [15 Jan 1970] 2000/70 Heading D1C A let-off device for a bobbin or the like 2 on a braiding machine comprises a biassed restraining device 4 or 9 which is coupled to the bobbin 2 so that, as the wire 1 or the like is taken off the bobbin against the action of the restraining device 4 or 9, the device moves along a path for a certain distance and tends to rotate the bobbin against take-off after which the device is not moved any further but the bobbin is free to rotate. As shown, Fig. 1, bobbin 2 drives a coaxial pinion 3 engaging a partly toothed rack 4 biassed by a compression spring 5 or a tension spring 6, otherwise, Fig. 2, pinion 3 drives quadrant 9 biassed by a tension spring 6. When excessive tension is applied, the pinion moves off the toothed part of the rack or quadrant to release the bobbin and when the tension is relaxed the pinion re-engages the teeth so that the bobbin is rotated to take up slack. Alternatively, a rubber or rubber-tyred wheel replaces pinion 3 and it engages a member whose surface is partly rubber and partly P.T.F.E.
Patent GB-716390-A (GB)
Title: Liquid fuel injection pumps
Inventor: EVANS FRASER MACKIE
IPC: F02M59/24
Filed: 1952-01-25
Abstract: 716,390. Fuel-injection pumps. C.A.V., Ltd. Jan. 13, 1953 [Jan. 25, 1952], No. 2072/52. Addition to 692,723. Class 102 (1). [Also in Group XXVII] In a fuel-injection pump, the plunger c has a spill passage e controlled by a sleeve d adjusted by a control member q which engages an inclined bore o in the sleeve. The control member q is loaded by a spring r and is subjected to the pressure of the fuel in the spill chamber b. The spill chamber has an outlet t the opening of which determines the engine speed and is adjusted by a groove u on the control member q by rotation of the arm 3 of an actuating member w that has a slot y engaged by a cross member x of the control member. The actuating member w is pressed against a stop 5 by a spring 6 and the stop is adjustable to determine the normal maximum fuel supply; additional fuel for starting may be obtained by moving the actuating member axially against the spring 6. Fig. 4 shows a modification in which the control member q has a light spring 12 between itself and a cross member 11 which abuts the loading spring 13. The sleeve d is adjusted to give extra fuel when the pressure in the spill chamber is insufficient to overcome the spring 12. The normal maximum fuel supply is determined by an adjusting nut 14 to move the actuating member w axially.
Patent GB-676817-A (GB)
Title: Improvements in or relating to television pick-up tubes
IPC: H01J29/02
Filed: 1950-01-26
Abstract: 676,817. Cathode-ray tubes. CINEMATELEVISION, Ltd., and FREEMAN, G. S. P. Jan. 25, 1951 (Jan. 26, 1950], No. 2083/50. Class 39 (i). The target electrode 2 of an image iconoscope 1 is flooded with low velocity photo-electrons from a photo-sensitive surface 5 separate from the main photo-sensitive cathode 3 with an electron permeable electrode or electrode in close proximity thereto. This surface 5 in the form of a coating overlies and is insulated from the wall anode and is in two or more portions, and the electron permeable electrode 6 is electrically connected to the wall anode. A ring of lamps is disposed outside the tube with individual or group control of brightness, and the various sections of the photo-sensitive surface are connected to individually variable potentials to give a masking effect or to compensate for brightness variation in the lamps. The photo-sensitive surface is at a potential of up to ten volts negative with respect to the final wall anode.
Patent GB-294847-A (GB)
Title: Improvements in or relating to apparatus for hoisting and discharging railway wagons
IPC: B65G67/00
Filed: 1928-01-23
Abstract: 294,847. Ellson, B., E. Jan. 23, 1928. Hoists with guided platforms.-Tipping-apparatus as in Specification 291,489, [Class 78 (iv), Loading &c.], is mounted upon a travelling carriage J running on rails K. The guides H of the hoist, or the upper part of them, form part of the travelling structure. The table A of the hoist rests in a shallow pit B in the feed track and may be lowered on to chocks after tippling in order to run the wagon off the table. There may be several pits B in a feed track parallel to the hoist track K, and a table may be lifted from one pit for discharging, and lowered at another pit, which may be on a feed track at a different level, as at Y. Empty pits may be bridged by spare tables or rail sections. The hoisting ropes C, D, which may be detachable from the tables, are arranged clear of the width of the wagons, and the ropes D pass to pulleys or drums F on the tipping cradle and thence to pulleys at C so that both the ropes C and the ropes D keep taut during tilting of the cradle.
Patent GB-1377044-A (GB)
Title: Process and apparatus for determining oxygen comsumption or gas  production in chemical reactions
IPC: G01N7/06
Filed: 1973-01-16
Abstract: 1377044 Measuring absorption or evolution of gas BAYER A G 16 Jan 1973 [19 Jan 1972] 2187/73 Heading G1B A method for measuring the amount of gas evolved or absorbed by a system which is present in a sealed measuring vessel comprises compensating for the pressure changes produced in the vessel by the system by supplying to or removing from the vessel sufficient gas to restore the pressure to its previous level, the gas being supplied or removed in a plurality of portions of equal volume, all measured at the same pressure and temperature and in which the number of portions is counted. As applied to measuring the biological oxygen demand of sewage, a vessel 1 is connected by a three-way cock 5 to an oxygen reservoir 7 or a manometer 10 provided with contacts 25 and 26; a change of level from 25 to 26 represents one volume unit of oxygen added and the necessary number of such units is counted.
Patent GB-248148-A (GB)
Title: Process for the transmission of sound by electrical means and for recording and reproducing sound films
IPC: G11B7/00
Filed: 1925-01-26
Abstract: 248,148. Poulsen, A., and Petersen, A. C. G. Jan. 26, 1925. Repeating and amplifying systems. - Sound vibrations during conversion into electrical current variations, or during subsequent amplification of the latter, are distorted in such a manner that sounds having the same sound intensity to the ear produce equally large current variations irrespective of their frequency. By this means the amplifiers used are utilized uniformly at higher and lower frequencies, and if the currents are used for recording sound by electrophotographic means the size of the sound signs on the film will correspond to their apparent intensity to the ear. The amplified currents may be used to operate directly a telephone of the kind adapted to emphasize the lower frequencies and thereby nullify the intentional distortion previously produced, for example, an electrodynamic telephone the oscillating member of which comprises a conductor loosely suspended in a magnetic field. Alternatively, a film record of the currents may be used to produce light variations on a selenium cell, the resulting currents operating a telephone of the kind previously referred to. In practice, the intentional distortion is brought about by damping the current variations of frequencies below about 300 periods per second by suitably proportioning the ohmic and inductive or capacitive resistances in the grid circuit of one of the amplifiers. Fig. 1 shows part of a recording circuit using a carbon microphone a in a circuit coupled to the amplifier A by a transformer i. The required distortion is produced by inserting a small condenser d in series with the grid resistance e, or alternatively an inductive resistance may be inserted in parallel with the grid resistance e. According to a modification, a glim-light or flame microphone is included in a circuit resistance-coupled to the amplifier grid circuit, the lower-frequency currents being damped as in the previous modifications. If a condenser microphone is used for recording, it is placed directly in the grid circuit and the grid resistance is so proportioned, relatively to the capacity of the condenser microphone, that the necessary distortion is attained.
Patent GB-511844-A (GB)
Title: Improvements in or relating to the manufacture of containers and tubes comprising organic thermoplastic material
IPC: B31F1/00
Filed: 1938-01-24
Abstract: 511,844. Tubes with beaded ends. CELLULOID CORPORATION. Jan. 24, 1938, No. 2278. Convention date, Jan. 22, 1937. [Class 99(ii)] [Also in Groups XVII and V] Containers and tubes have the side walls terminating at one or both ends with a beading of organic thermoplastic material, the side walls in some cases consisting wholly or partially of such material. In the form shown in Fig. 2 a container has its edge beaded by means of dies 8, 12 and a groove 11, the upper part being clamped by a ring 13. Heating fluid may be passed through pipes 7 in a table 6 to render the material plastic. This container is of organic transparent thermoplastic material and may have a lining of paper, fabric or metal foil. Alternatively, the ends only of the containers or tubes are of the material and the rest of paper, cardboard, wood, metal &c. In other forms laminations of paper, cloth, metal foil &c., printed, embossed or plain, may be combined with a sheet or sheets of the thermoplastic material and paper &c. labels, ribbons, metal foils &c. may be attached by the beading process. Fig. 5 shows a die which is waisted for convenience of insertion, a container end being secured by means of the bead. The container may be cylindrical or of square, hexagonal, polygonal or partly circular and partly angular cross-section. The bead may be turned outwardly or inwardly or partly outwardly and partly inwardly. The containers concerned are hat, shirt or collar boxes, hair pin containers, jewellery, cosmetic or store-anddisplay boxes for shops, or shoe boxes. The walls may be of mixtures of thermoplastics or of paper or textile fabric impregnated with thermoplastic material. Thermoplastic substances mentioned include cellulose derivatives such as nitrocellulose and organic derivatives of cellulose such as esters, e.g., acetate, butyrate, formate, or propionate, or ethers such as ethyl, methyl and benzyl cellulose, mixed esters such as stearate-acetate and nitroacetate and mixed ether esters such as ethyl cellulose acetate. Other substances mentioned are synthetic resins such as urea-formaldehyde resins, polyhydric alcohol - polybasic acid resins, e.g., glycerol phthalic anhydride resins, polymerized vinyl compounds, e.g., polymerized vinyl chloride or acetate, and polymerized acrylic acid esters such as polymerized methyl methacrylate and derivatives of such vinyl compounds. Synthetic rubbers may also be employed.
Patent GB-161725-A (GB)
Title: Improvements in metal stanchions
IPC: B63B3/68
Filed: 1920-01-24
Abstract: 161,725. Cobley, W. D. Jan. 24, 1920. Stanchions of channel section for supporting four partitions meeting at right-angles, such as the walls of the pounds employed in the holds of fishing vessels, are constructed of two members A, B of the cross-section shown in Fig. 3, or three members A, E, F of the section shown in Fig. 2. In building up the pounds, boards G are dropped into the channels of the stanchions until the desired height is reached. Caps J placed over the vertical boards G have flanges j which support the boards H forming the floor of the upper pound.
Patent GB-123137-A (GB)
Title: Improvements in or relating to the Manufacture of Solid Indiarubber Tyres.
IPC: B29B17/02
Filed: 1918-02-08
Abstract: 123,137. Henley's Telegraph Works Co., W. T., Sutton, G., and Judge, E. E. Feb. 8, 1918. Disk, wheel, and roller apparatus.-A machine for trimming a solid rubber tyre C (built up on a metal foundation band) comprises a rotary chuck G. pairs of knives T, 22 for trimming the sides and tread respectively of the tyre, and a pair of profiled carborundum rolls 23 for the final grinding of the tyre before vulcanization. The knives T are mounted on a compound slide H and are moved towards and from the work by a screw-fed crosshead Q slotted to receive pins S on the knife-holders P. The latter is guided in plates 0 adjustably secured to the slide H to vary the inclination of the knives T. The tread-trimming knives 22 are carried on a compound slide 10 and are mounted in holders having a pin-and-slot connexion 17, 21 with arms 19 on a right-and-left threaded spindle 20. The grinding-wheels 23 are mounted in bearings 25 adjustable on a plate 27 adapted for compound adjustment on a pedestal 33, which is itself adjustable towards and from the work by means of a screw 34. The wheels 23 are oppositely rotated by pulleys 35. In the grinding operation, the mandrel is rotated by worm-gear from a handwheel 39. Means (not shown) are provided for supplying water to the trimming-knives.
Patent GB-1063573-A (GB)
Title: Method for the production of trioxane copolymer containing nitrogen
IPC: C08G2/26
Filed: 1965-01-19
Abstract: Trioxane is copolymerized with 0.01 to 50% of at least one unsaturated dibasic aliphatic carboxytic acid derivative containing nitrogen. Specified comonomers are maleamide, malediamide, maleamide esters, N-substituted maleamides, maleimide, N-substituted maleimides, maleic hydrazide, N-substituted maleic hydrazide, N-substituted maleic hydrazide, itaconamide, N-substituted itaconamides, itaconic hydrazide and N - substituted itaconic hydrazides. The copolymerization may be effected in the solid phase by irradiation with alpha, beta or gamma rays or in solution with a catalyst such as sulphonic acid esters, sulphinic acid esters, sulphuric acid esters, organic peroxides, antimony trifluoride, aluminium chloride and boron trifluoride.
Patent GB-773980-A (GB)
Title: Improvements in turning apparatus for grooving the external surfaces of cylindrical bodies such as pistons of engines
IPC: B23B3/24
Filed: 1954-01-26
Abstract: 773,980. Stationary-work lathes. CHACKSFIELD, H. F. April 18, 1955 [Jan. 26, 1954], No. 2354/54. Class 83 (3). Apparatus for grooving cylindrical bodies such as engine pistons comprises a bed-plate, a gantry, including uprights and a cross-member, carrying a rotatable spindle whose axis is perpendicular to the bed-plate, a cutter carried by the spindle below the cross-bar and directed towards the spindle-axis, means for advancing the shaft and means for setting-up the cylindrical body on the bed-plate with its axis colinear with the spindle. The work P is supported on a bed-plate 11 and centred by concentric circles engraved on the plate and a V-shaped member 15 adjustable by a screw 16. In the case of a piston, clamping on the plate may be effected through the associated connecting rod and a fastening-device 18, 19 below the plate and within a supporting-frame 17. A number of tools T in a turret 40 are selectively brought into operation by loosening a nut 41 securing the turret to a support 39. The latter is carried at the end of an arm 38 slidable within a block 36 secured to the end of a hand-rotated spindle 31. The arm 38 has screw-adjusting means 45 for varying the depth-of-cut, and an adjustable stop 42a limits the ultimate depth of a grooving-cut. Fine adjustment of the toolheight is effected by a screwed sleeve 30 in which the spindle 31 is journalled and supported by thrust-bearings. Coarse adjustment of the tool-head may be effected by vertical adjustment of the bridge-piece 28, supporting the sleeve and spindle, on its columns 27.
Patent GB-1517054-A (GB)
Title: Two stroke multiple cylinder internal combustion engine
IPC: F02B33/36
Filed: 1976-01-21
Abstract: 1517054 Two stroke IC engines C M MORTON 21 Jan 1976 [7 Feb 1975] 02368/76 Heading FIB A two stroke multi-cylinder I.C. engine, having exhaust ports 17', scavenging ports 18 and a fuel/ air mixture inlet valve 21 in association with a retaining chamber 19, has in addition to impeller type compressors 50, 35 for scavenging air and fuel/air mixture, a rotary pressure booster H, F associated with the air and mixture flow, driven in timed rotation with the piston and metering a fixed amount of said air and mixture. Figs. 3 to 10 (not shown) indicate the sequence of the cycle, the air and mixture expanding in the cylinders causing cooling. The system may be applied to a Diesel engine when the mixture is replaced by air. Grooves 44, 45, 56, 57 prevent pressure build up or drag on the rotary vanes 42, 54 and chamber 19, stores the mixture (air for Diesel) under pressure for admission when valve 21 opens. The quantities of scavenging air is in excess of the cylinder space volume at bottom dead centre.
Patent GB-1490632-A (GB)
Title: Plural frequency signalling systems
IPC: H04L27/14
Filed: 1975-01-21
Abstract: 1490632 Selective signalling GENERAL ELECTRIC CO Ltd 16 Jan 1976 [21 Jan 1975] 2571/75 Heading G4H [Also in Division H3] A receiver for use in a signalling system in which data is transmitted by a signal having alternately two frequencies comprises: means for deriving from the input signal two pulse trains W2, W3 having frequencies dependent on the input frequency and having pulse durations independent of each other and short compared with the period of the input signal; respective coincidence gates 16, 19 fed at one input with the two pulse trains; and respective delay circuits FRG, FRT coupled to the other inputs of the gates and receiving one of the pulse trains as their inputs. The arrangement producing an output from one or the other of the two gates depending on which of the two frequencies is present. The recognition band widths for the two frequencies are individually determined by the pulse durations of the two pulse trains. The input signal is shaped to produce a squarewave signal W2 which is applied to NAND gate 19 in frequency selective channel FRG and also to a delay circuit monostable 10 which produces the second signal W3 which is fed to the delay circuits 11, 17 in both channels, and also to the NAND gate 16 in channel FRT. The delay in channel FRT is split into two sections 11, 14 separated by a further NAND gate 13. As long as the input frequency remains at a first of two possible values, the "guard" frequency, FRG produces an output pulse train which sets bistable 20 to its "guard" state. When the input frequency changes to its other value, the "trip" frequency the output from FRG terminates and an output is produced from FRT to set bistable 20 to its trip state. In order to protect the circuit against false changes a third input is applied to NAND 16 which inhibits its output until the "trip" frequency has been present for a predetermined time.
Patent GB-1087881-A (GB)
Title: Improvements in or relating to hydraulic braking systems for vehicles
IPC: B64C25/46
Filed: 1965-01-20
Abstract: 1,087,881. Hydraulic brake system. SOC. ANON. ANDRE CITROEN. Jan. 20, 1965 [Jan. 24, 1964], No. 2592/65. Heading F2F. [Also in Division F2] A vehicle hydraulic brake system comprising two separate fluid circuits connected to front brakes 6 and rear brakes 7 respectively, each including a fluid accumulator 3 or 4 and a distributer device 5a or 5b feeding fluid to the respective brake or set of brakes, the distributers being mounted in tandem and operable by a common pedal 10, is characterized in that one of the fluid circuits incorporates a limiting valve device 11 limiting the pressure applied to the brake or set of brakes of said one circuit as a function of the load on the axle associated therewith. The limiting valve comprises two integrally connected pistons 12 and 16 in a cylinder 13 defining a first chamber between said pistons connected to the rear brake outlet line 9a, and a further chamber 13a connected to said outlet line by a by-pass line 14 having a relief valve 15. An axial extension 12a on the piston 12 is adapted to abut the base of the cylinder whilst a second extension 17a is connected through a spring 20 to one end of a lever 22 which is pivoted to the vehicle chassis and abuts at its other end the rear axle 24. On depression of the pedal 10, accumulators 3 and 4, which are pressurized by a pump 1 from a reservoir 2, feed fluid through the respective distributers 5a and 5b and along lines 8 and 9 to front and rear brakes respectively. The pressure transmitted to the brake 7 also acts in chamber 13a on the underside of the piston 12. When this pressure balances the action of the spring 20, the piston rises and closes the end of the pipe 9 to limit the rear brake pressure to a value proportional to the compression of the spring 20 and hence the load on the rear axle 24. If the load on the axle 24 and hence spring 20 momentarily decreases during braking, due to, for example, road conditions or displacement of the vehicle centre of gravity, upward movement of pistons 12 and 16 is sufficiently large for the brake to be vented through pipe 9a and 18 to the reservoir to prevent locking of the wheels. In a modified embodiment, Fig. 2 (not shown), a pneumatic or hydropneumatic suspension bellows of the type wherein the distance between the chassis and the axle is maintained constant by modifying the bellows pressure as a function of vehicle load, is connected to a jack (27). The piston of the jack is either directly or indirectly connected to the valve extension 17. The valve device 11 may be fixed relative to the chassis or alternatively the valve device 11 may be fixed relative to the axle 24.
Patent GB-1361160-A (GB)
Title: Electromechanical filter
IPC: H03H9/46
Filed: 1973-01-18
Abstract: 1361160 Electromechanical filters INTERNATIONAL STANDARD ELECTRIC CORP 18 Jan 1973 [21 Jan 1972] 2674/73 Heading H3U A known band-pass filter comprising inter mediate flexural mode resonators (2), Fig. 1 (not shown), and end resonators (2a, 2b) supporting piezoceramic transducers (3a, 3b) is modified, to provide the invention, by providing partitions 6 between individual ones, or groups, of resonators to reduce acoustic coupling, caused by reflections from the base 1 and cap 5, between adjacent or non-adjacent resonators. The partitions may be moulded in plastics integrally with the cap 5, Fig. 3, and extend to the coupling wire 4, or over the entire cross-section in dependence on required filter characteristics, or may be mounted on the base 1, Fig. 4, and extend over substantially the entire crosssection, or the partition may be formed in two parts, 6a, 6b, Fig. 5, part 6a mounted on the cap, part 6b on the base. Coupling via the wire 4 between non-adjacent resonators is stated to tend towards zero. Fig. 2 (not shown) demonstrates the effect of acoustic coupling in the known filter on bandpass characteristics.