baber/WOPTO huggingface dataset:
Patent GB-214736-A (GB)
Title: Improvements relating to refrigerating systems or apparatus
IPC: F25B1/04
Filed: 1923-01-29
Abstract: 214,736. McNutt, W. A., and Kitson Engineering Co. (London), Ltd. Jan. 29,1923. Indicators actuated by floats. -The levels of condensed refrigerant and sealing liquid in a refrigerating machine are indicated by means 67 comprising a needle 70 influenced by a magnet 72 on an arm 74 carrying a cork float 75. Specification 193,739, [Class 110 (ii), Rotary engines &c.], is referred to.
Patent GB-100718-A (GB)
Title: A New or Improved Explosive Projectile.
Inventor: HEARN JOHN EDWARD
IPC: F42C14/02
Filed: 1916-02-22
Abstract: 100,718. Hearn, J. E. Feb. 22, 1916. Projectiles; projectile fuses. -Consists in making a handgrenade in the shape of a flask adapted to be filled with explosive through the neck a<x>, whilst the larger end. is bored through to accommodate a direct-action percussion fuse. The fuse comprises a hollow spring-controlled striker i movably mounted within a part c which supports the detonator g. A safety cover e, removably attached by means of a bayonet-joint or the like, is provided. External weakening- grooves are made around the shell, to facilitate bursting.
Patent GB-971715-A (GB)
Title: Synchro to digital converter
IPC: G08C19/46
Filed: 1962-01-24
Abstract: 971,715. Electric selective signalling systems. GENERAL PRECISION Inc. Jan. 24,1962 [Feb.10, 1961], No. 2675/62. Heading G4H. Sine and cosine voltages of an angle # produced for example by a synchro are converted into a binary representation of the angle by sequentially attenuating the larger of the two voltages until it equals the other, the sequential attenuations being equivalent to multiplying the larger voltage, say the cosine, by a sequence of values starting with 45 degrees and converging towards tan #, whereupon the attenuated cosine voltage equals the sine voltage since cos #.tan # = sin #. This process determines the angle within any one of the eight octants, the particular octant being determined by logic circuits from the signs and relative magnitudes of the two voltages. As described the sine and cosine voltages are produced by a circuit 99, Fig. 5, and are applied to a comparator 14, the larger passing via a resistive attenuating network initially set to correspond to an angle of 45 degrees. The switches in the attenuating network are then sequentially closed and each is either left closed or re-opened in dependence upon the result of each comparison. The final condition of the switches represents the angle within a range of 45 degrees. The particular octant in which the angle lies is determined by logic circuitry (Fig. 11 not shown) and provides an additional three more significant binary bits which together with the bits produced by the attenuating network specify the angle within the range 0 degrees to 36 degrees. Specification 971,716 is referred to.
Patent GB-987936-A (GB)
Title: Improvements in and relating to low-power multi-frequency radio communication system
IPC: G09B5/12
Filed: 1962-01-24
Abstract: 987,936. Radio signalling; inductive signalling. ELECTROTONE LABORATORIES Inc. Jan. 24, 1962 [Feb. 15, 1961], No. 2685/62. Headings H4L and H4U. In a multi-channel radio communication system for use in a confined area, e.g. for multilanguage transmissions in a hall, a plurality of radio transmitters are connected to a common aerial, the coupling between each transmitter and the aerial being mismatched intentionally in order to restrict the radiation to the required area. As shown, the radio transmitters 20, 22, 24 are loosely coupled to the common radiating line 38, via respective output stages 32. The line 38 extends around the ceiling of a room and is earthed at the remote end, and may be extended to further rooms as by loop 38A. Receivers 50 co-operate with the loops. In an alternative arrangement for a single storey building divided as at 64A to 64B into separate rooms, the radiating line 60 may be arranged in a series of loops 66 each loop extending over a row of rooms.
Patent GB-846661-A (GB)
Title: Heating boiler
IPC: F24H1/50
Filed: 1959-01-26
Abstract: 846,661. Liquid or gaseous fuel fired furnaces. OSPELT, G. Jan. 26, 1959 [Jan. 27, 1958; July 31, 1958], No. 2763/59. Class 51 (1). [Also in Group XIII] A liquid or gaseous fuel fired boiler has a combustion chamber 9 surrounded by a bell-shaped water jacket 2, an annular passage 16 surrounding the water bell 2 and leading to a flue 7, a helical baffle 19 mounted in the passage 16 to be freely displaceable longitudinally of the passage and a wall 11 closing the open end of the combustion chamber 9 while leaving a space connecting the combustion chamber with the annular passage 16, at least part of the wall 12 being removable to allow access to the passage 16. The burner 8 is mounted in the wall 11. The baffle 19 is mounted on rods 22 and is of less width than the passage 16, so that it is easily removable for cleaning, and its pitch may decrease towards the fuel outlet end of the passage 16. A water jacket 1 connected to the water bell 2 surrounds the flue passage 16. A second boiler 28 is heated by the circulation of hot water from the jacket 1 and bell 2 through tubes 36, 27 and 32. In a modification, Fig. 2, not shown, the end wall of the combustion chamber abuts its side wall, which has a triangular opening between the end wall and the first turn of the helical baffle.
Patent GB-393358-A (GB)
Title: Improvements in seaming machines for uniting containers or bodies and covers or endstherefor
IPC: B21D51/32
Filed: 1932-01-30
Abstract: 393,358. Assembling and seaming can heads and bodies. PEYSER, J., Mount Vernon, New York, U.S.A. Jan. 30, 1932, No. 2887. [Class 83 (iv).] Embossing.-A body is conveyed towards.a seaming-mechanism comprising a pedestal to receive the body, and is transferred thereto together with an end by an intermittently rotating star-wheel, the body being guided throughout in a rectilinear path. Can bodies 3 are fed between guides 8 by teeth 6 on a feed chain 5, a star-wheel 11 initially moving faster than the chain receiving them in pockets and conveying them to the seaming head 2 while still guided rectilinearly by the extension of a guide 8. Covers 4 are carried in a magazine 9, one being released and fed forward by a reciprocating feed-member 12 actuated by a shaft 14 when a can passes a finger 29. In the absence of a can, the finger yields under the action of a spring 32 to rock a shaft 31, an arm 34, and a rod 28, permitting a pawl 22, carried on a member 18 free to oscillate on shaft 14, to move under the action of a spring 24 out of engagement with a shoulder 20 on a member 19 keyed to shaft 14. The member 18 carries a roller 17 guided in a cam 16 on a shaft 15, and during the normal engagement of pawl 22 and shoulder 20 actuates the feed member 12 first to feed a lid to a marking device 10 and then to the star wheel 11 for transfer to the seaming mechanism. The marking device comprises a lower die 35 and an upper die 36 reciprocated from a cam 37 by an arm 38 and gear segments 40, 41.
Patent GB-629116-A (GB)
Title: Improved method of oiling wool and apparatus therefor
IPC: D01G29/00
Filed: 1947-01-30
Abstract: <PICT:0629116/IV (c)/1> A method of oiling wool comprises traversing a mass of wool in the form of a mat from one part of a feed device to another, and spraying oil on to the underside of said mass when it is disposed between said two parts of the feed device 34 and 33 by means of a roller or, e.g. a series of perforated tubes 15 disposed peripherally around a roller 14.  A wire mesh 17 surrounding the roller prevents wool from entering the spraying devices.  Valve means are provided so that oil is supplied to the spraying tube only when it is adjacent to the underside of the mass of wool.  A stripping roller 37 may be provided to clear the wire mesh 17 of wool.
Patent GB-1361197-A (GB)
Title: Power transmission systems
IPC: H02J3/24
Filed: 1972-04-18
Abstract: 1361197 Preventing oscillations in power transmission lines ENGLISH ELECTRIC CO Ltd 18 April 1972 [22 Jan 1971] 2997/71 Heading H2H An alternating current power transmission system comprises a transmission line 4 having in shunt therewith at least one alternating current saturated reactor 23, 24, the current-voltage characteristic of the reactor being controlled to provide positive damping of oscillations induced in the system. Each reactor may be similar to that described in Specification 1,303,634 (see Division G3). A line 25 connects a tapping point on the secondary winding of the reactor 23 or 24 to a compensating reactor in the form of a transductor 29. The line 25 forms a primary winding of a current transformer 26, secondary winding of which feeds a bridge rectifier 28 which supplies D.C. excitation to the transductor 29. The variation of the excitation current in response to changes in the reactor current produces a change in the current-voltage characteristic of the reactor, thus damping oscillations in the transmission line due to a disturbance which causes the change of reactor current.
Patent GB-192705-A (GB)
Title: An apparatus for heating liquids
IPC: F24J3/00
Filed: 1923-02-01
Abstract: 192,705. Bruman, O. F. Feb. 1, 1922, [Convention date]. Motors, controlling. -A liquid is heated by conveying it under pressure through an apparatus, such as an hydraulic brake, in which frictional energy is converted into heat. Brake discs S on the shaft of an electric motor M are rotated between partitions Z in a casing into which the liquid is forced from a pipe R. The outlet A for the heated liquid is rectangular in cross-section. The discs may be made of rubber, and they may be roughened or formed with grooves or perforations. A fan V on the motor shaft forces air through the motor, the air being then directed over the sides of the brake.
Patent GB-1157292-A (GB)
Title: Water-Setable Compositions
Inventor: WILLIAMS HOWARD
IPC: C04B24/28
Filed: 1967-01-20
Abstract: 1,157,292. Cementitious compositions. BRITISH RESIN PRODUCTS Ltd. 29 Dec., 1967 [20 Jan., 1967], No. 3128/67. Heading C1H. [Also in Division C3] A water settable polyester/inorganic hydraulic filler composition comprises a polymerizable unsaturated polyester, an ethylenically unsaturated monomer copolymerizable therewith, an inorganic hydraulic filler which after having been stirred with water exhibits or induces an alkaline reaction and sets to a solid mass, a water-soluble free radical forming polymerization initiator which is substantially insoluble in the monomer and/or the polyester and which will not initiate polymerization in the substantial absence of water but which becomes active under aqueous alkaline conditions and 0-1 to 20% by weight in relation to the combined weight of the polyester and unsaturated monomer of a compound having at least one carboxylic acid or anhydride group and a C 10 -C 60  aliphatic and/or alicyclic group containing unsaturation capable of being oxidized in air at room temperature (i.e. 13-25‹ C.) or a salt thereof in which the positive ion does not promote the activity of the polymerization initiator. Preferred hydraulic fillers are Portland cement, ferro-Portland cement, blast furnace cement (slag cement), high alumina cement (cement de la Farge), lime-pozzolana cement, natural cements which are employed in admixture with quicklime and the hydraulic limes and Roman cement.
Patent GB-155139-A (GB)
Title: Device for disconnecting differential gearing
IPC: F16H48/30
Filed: 1920-02-02
Abstract: 155,139. Forrester, H. J. C., (Baker Steam Motor Car & Manufacturing Co.). Feb. 2, 1920. Clutches, applications of; balance or differential gearing.-The engine of a vehicle is adapted to be disconnected from the driving-wheels by means of a ring 10 loose upon a sleeve 7 surrounding and driving the differential gear 6. The ring 10 has clutch teeth 13 adapted to engage teeth 14 on the sleeve 7 to effect the drive. The ring 10 is constantly driven through toothed gearing 11, 12, or otherwise.
Patent GB-691339-A (GB)
Title: Improvements relating to apparatus for the control of voltage and like regulators
IPC: H02P9/24
Filed: 1951-02-09
Abstract: 691,339. Automatic voltage control systems. WESTINGHOUSE BRAKE & SIGNAL CO., Ltd., and KING, K. G. Nov. 30, 1951 [Feb. 9, 1951], No. 3198/51. Class 38 (iv). In a system for automatically controlling an electrical variable, two D.C. relays are each positively biased to a position at which a negative bias causes the relay to assume the alternative position at which the negative bias is reduced at a controlled rate, the negative bias of one relay being increased and that of the other reduced in accordance with the magnitude and sense of deviation of the variable. As applied to the regulation of a direct voltage, Fig. 1, polarized relays 1, 2 are positively biased by windings 14, 17 energized from a D.C. source 20 to move their contacts from the positions shown. Resultant closure of contacts 3, 4 energizes from a D.C. source 25 negative biasing windings 15, 18 the effect of which is sufficient to return the contacts to the position shown. The next operation of the relays is then delayed until a condenser 21, associated with windings 15, 18, discharges sufficiently to reduce the negative bias. When the voltage to be controlled has the desired value, repeated simultaneous operation of contacts 5, 6 thus takesplace with no effect on relays 10, 11. When a voltage deviation occurs, however, an error signal is applied to windings 16, 19 which bias the relays in opposite senses so that one or other of contacts 5, 6 picks up before the other in the cycle to energize relay 10 or 11 to run an A.C. servomotor 7 in the appropriate direction to correct the voltage. In one modification positive bias of the relays is produced by a permanent magnet. In another modification the multi-winding relays are replaced by singlewinding relays supplied through rectifiers from the output of magnetic amplifiers each having three control windings to which positive bias, negative bias and error signal are respectively applied. Specification 623,661 is referred to.
Patent GB-568727-A (GB)
Title: Improvements in means for regulating spark ignited two-stroke injection internal combustion engines
IPC: F02B25/00
Filed: 1943-02-26
Abstract: 568,727. Two-stroke injection engines. SOC. ANON. A. SAURER. Feb. 26, 1943, No. 3202. Convention date, March 10, 1942. [Classes 7 (ii) and 7 (vi)] In a two-stroke spark-ignited light oil injection engine having piston - controlled scavenging ports 4 supplied from a blower 8, and supplementary charging ports 6 controlled by a sleeve valve 7 and supplied from a blower 14 when working under heavy load, the delivery pipe 19 of the blower is shut off when the load is small and the ports 6 are connected to the inlet 13 of the blower 14 by opening a valve 21 so that air is drawn out of the engine cylinder after the scavenging period. As shown, the engine has opposed pistons 2, 3 and exhaust ports 5 controlled by the piston 3. The blower 8 communicates with the scavenging-air reservoir 10 around the ports 4 and by means of a pipe 11 and a valve 12 with the inlet 13 of the blower 14. Under heavy load, the valve 12 and valve 22 in the pipe 19 are open. When the load diminishes, the valves 12, 22 are gradually closed and valves 23, 24 gradually opened to the atmosphere, so that the pressure in the pipe 13 falls to atmospheric. Afterwards, the valve 21 is progressively opened and the valve 23 closed, so that the blower 14 draws air from the cylinder ports 6 and discharges to the atmosphere. During the closing of the valve 12, a throttle valve 16 in the inlet to the blower 8 is partly closed.
Patent GB-248343-A (GB)
Title: Improvements in or relating to the manufacture of felt
IPC: D01C3/00
Filed: 1926-02-04
Abstract: 248,343. Pichard, C., and Pichard, E. Feb. 28, 1925, [Convention date]. Furs.-Hair for making felt is carotted prior to or after removal of hides by treatment with a solution of urea or of compounds or derivatives of urea, preferably urea nitrate.
Patent GB-750304-A (GB)
Title: Improvements in or relating to cathode-ray tuning indicators for visually indicatingsyntony
IPC: H01J31/14
Filed: 1953-02-05
Abstract: 750,304. Cathode-ray tubes. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Feb. 5, 1953 [Feb. 8, 1952], No. 3270/53. Class 39 (1). [Also in Group XL (c)] A cathode-ray tuning indicator for use in A.M. or F.M. systems comprises separate coplanar elongated cathodes 4, Fig. 9, for producing two wedge - shaped beams of ribbon cross-section and whose axes are inclined to one another, the widths or divergence of the beams being controllable by separate control electrodes 5, the beams overlapping where they impinge on an inclined luminescent screen 2, 7. In the form shown, two cathodes 4 are surrounded by cylindrical control electrodes 5 to which rectified voltages representing the frequency or amplitude modulated waves are applied, optional accelerating anode 10 and inclined luminescent screen 2 with central streak 12. The anode 10 may be parallel or inclined to the plane containing the cathodes, and is connected to screen 2. The screen may be viewed through the end of the bulb or at right-angles thereto, Figs. 1, 8 (not shown), and examples of luminous patterns observed with frequency and amplitude modulated voltages are given in Figs. 2-7 (not shown). The arrangement is such that the two wedge-shaped fluorescent images partially overlap and become progressively narrower with negatively increasing control voltages. Correct tuning is indicated by equal control voltages which cause the apex of the central triangular shadow area to coincide with mark 12. The mark may be replaced by a central rib or slot, or the two areas of the screen on either side of the centre may be coated with different coloured fluorescent materials. If, however, an amplitude modulation system is used in which both control electrodes are connected to the A.V.C. voltage of the receiver tuning is indicated by maximum height of the central triangular shadow area. Operation with amplitude modulated waves can also be achieved by connecting control electrodes 5 to two tuned circuits of slightly different natural frequency. U.S.A. Specification 2,394,857 is referred to.
Patent GB-781437-A (GB)
Title: Improvements in processes for preparing polymers from acrylonitrile
IPC: C08F220/44
Filed: 1955-02-03
Abstract: A process for preparing acrylonitrile polymers comprises introducing continuously into a polymerization system a mixture comprising from 5 to 95 parts by weight of (1) acrylonitrile alone, or together with not more than 15 per cent, based on total weight of monomers, of at least one other different monoethylenically unsaturated monomer containing a -CH = C< group and from 95 to 5 parts of (2) a preformed polymer of a monomer or monomers represented by the following formul : <FORM:0781437/IV (a)/1> wherein R and R1 each represents hydrogen or an alkyl group containing from 1 to 4 carbon atoms, R2 represents an alkyl group containing from 1 to 4 carbon atoms, R3 represents hydrogen or a methyl group and R4 represents an alkyl group containing from 1 to 3 carbon atoms, subjecting the mixture to polymerizing conditions until from 70 per cent to 100 per cent of the monomers have been converted to graft polymer and withdrawing reacted mixture from the system either continuously at about the same rate as the mixture of monomer and polymer is introduced into the system or after the continuous introduction.  The polymers of the monomers of the above formul  may be used either before or after they have been separated from their polymerization media and may be prepared by polymerizing them alone or together with other monomers of the above general formul , acrylonitrile or other monomers containing a -CH = C< group such as styrene, alpha-methyl styrene, p-acetamino-styrene, alpha-acetoxy styrene, ethyl and isopropyl vinyl ethers, methyl and ethyl vinyl and isopropenyl ketones, dimethyl, diethyl and diisopropyl maleates and fumarates, fumaronitrile, methacrylonitrile, acrylic and methacrylic acids, ethylene, isobutylene, vinyl and vinylidene chlorides, vinyl sulphonamide, N-vinyl phthalimide; 2-vinyl pyridine, 4-vinyl pyridine, 2-methyl-5-vinyl pyridine, and 2-vinyl-6-methyl pyridine.  Polymerization may be carried out in solvents such as acetonitrile, benzene, toluene, n-heptane, aliphatic ethers, acetone and mixtures of acetone and water or, and preferably, in aqueous media which may contain emulsifiers such as sodium lauryl sulphate, sodium isobutyl naphthalene sulphonate, alkali metal or amine addition salts of sulphosuccinic esters, alkali metal salts of fatty acids, sulphonated fatty acid amides, alkali metal salts of alkane sulphonic acids, sulphonated ethers and aryloxy polyalkylene ether sulphonates; also present may be chain regulators such as hexyl, octyl, lauryl, dodecyl and myristyl mercaptans. Polymerization may be accelerated by heat, actinic light and catalysts such as benzoyl, acetyl, acetyl benzoyl, oleoyl, triacetone, urea and hydrogen peroxides, t-butyl hydroperoxide, alkyl percarbonates, sodium, potassium and ammonium persulphates and perborates, azines and ketazines, and catalyst activators such as alkali metal sulphites, bisulphites and metabisulphites. Specifications 764,296, 764,297, 764,298, 764,299, 764,300, 764,301, 781,434, 781,435 and 781,436 are referred to.
Patent GB-756080-A (GB)
Title: An electrical recording instrument
Inventor: KOCHANEK VACLAV
IPC: G01D15/08
Filed: 1954-02-04
Abstract: 756,080. Recording-apparatus. TESLA NARODNI PODNIK. Feb. 4, 1954, No. 3318/54. Class 106 (4). Electric recording-apparatus, wherein a curve is recorded by perforating a moving chart 6 by means of spark discharges, comprises two parallel spaced conductive rods 4, 5 arranged transversely with respect to the direction of the chart's movement and both connected to one pole of a voltage source 9, with a measuring pointer 2 moving between the rods to form two series-connected spark gaps and the chart 6 moving in one of the gaps. The chart 6 passes over the rod 5, which is made rotatable to reduce friction. The rods 4, 5 exert equal and opposite electrostatic forces on the pointer 2 and so do not affect its reading. To adapt the apparatus for controlling the variable recorder the rod 4 is subdivided into two insulated parts both connected to the same terminal of the secondary winding of the transformer 9 supplying the spark voltage and respectively connected to two relays for actuating a regulating device in one sense or the other. The transformer is connected intermittently to the mains by means of a relay energized by a train of impulses while of the relays actuating the regulator, one closes its own holding circuit when energized while the other is connected to open this circuit and release the first relay, thus the variable is controlled to the value represented by the position of the insulated dividing point in the rod 4. The divided rod may be in the form of two wires 21, 22, Fig. 4, with their ends bent back and held together by an insulating ring 26, Fig. 5, the endless band thus formed passing round pulleys 23, 24 and enabling the set point to be adjusted. The rods 4, 5 may be arcuate.