baber/WOPTO huggingface dataset:
Patent GB-629522-A (GB)
Title: Improvements in or relating to electrical circuits for the suppression of pulse-typeinterference
IPC: H03G11/04
Filed: 1947-11-19
Abstract: 629,522. Radio receiving apparatus. GENERAL ELECTRIC CO., Ltd., and AKROYD, R. Nov. 19, 1947, No. 30705. [Class 40 (v)] A noise-reducing circuit comprises a capacitance in series with a first rectifier, a second rectifier being connected to the common point so that unlike poles of the rectifiers are connected together, and the output is taken from across the two rectifiers. The circuit shows a leaky-grid detector valve 1, the output being supplied through condenser 3 to the common connection of rectifiers 6 and 4. The potential of point 9 becomes equal to the peak amplitude of the signal so that normally rectifier 4 is non-conducting and rectifier 6 conducts to supply the output terminal 7. In the event of a large amplitude noise impulse, rectifier 4 conducts and rectifier 6 becomes non-conducting, so preventing the noise from reaching the output. A small condenser 10 may be connected across the output circuit to reduce the maximum amplitude of the pulse below that of the modulation, and to reduce the possibility of clipping of the modulation a positive bias source may be connected to rectifier 6 through resistance 11.
Patent GB-1106936-A (GB)
Title: Process for the production of mouldings and coatings by curing polybutadiene epoxides
IPC: C08G59/34
Filed: 1965-07-20
Abstract: Mouldings and coating compositions are obtained by curing a polybutadiene epoxide in which at least 60% of the double bonds are epoxidized (equivalent to an oxygen content of 15%).  The latter is prepared from a low M.W. polybutadiene (e.g. with peracetic acid) containing at least 60% of mid-position cis-double bonds; curing is effected either with a polycarboxylic acid or its anhydride.  Curing may take place in the presence of a polyol (e.g. propylene glycol or glycerine).  The polybutadiene epoxide is preferably mixed with the hardener at <100 DEG  C.  It may then be poured into a mould and hardened, e.g. at 20-120 DEG  C. or the mixture may be dissolved in an organic solvent and applied as a coating.  The solvent should evaporate before curing has commenced. The amount of hardening substance may be from 0.6 to 1 equivalent (with reference to reactive hydrogen) per epoxide group.
Patent GB-1219638-A (GB)
Title: Process for producing phenols and xanthenes
Inventor: FACTOR ARNOLD
IPC: C07F7/18
Filed: 1968-06-27
Abstract: 1,219,638. Preparing phenols and xanthenes. GENERAL ELECTRIC CO. 27 June, 1968 [11 Aug., 1967], No. 30743/68. Heading C2C. Phenols of the formula where R, R<SP>1</SP> and R<SP>11</SP> are H atoms, or alkyl, cycloalkyl, alkaryl, aryl or aralkyl radicals, R<SP>1</SP> in addition can be an alkoxy radical, R<SP>11</SP> in addition can be an OH, alkoxy or aryloxy radical, and a pair of adjacent R<SP>11</SP> radicals or R<SP>1</SP> and R<SP>11</SP> radicals may represent a fused ring system, are obtained by heating in an inert atmosphere a diphenyl ether of formula to a temperature of 250 to 450 C., and when an R<SP>1</SP> on the benzene nucleus which does not contain the R 2 CH group is hydrogen, xanthenes of the formula are obtained. An oxidizing agent may be added to the reaction mixture. Examples are given for the production of the compounds. The invention also comprises the following compounds per se: 2-methyl-6-(diphenylmethyl) - phenol, 2 - methyl - 6 - (4 - -methoxybenzyl) - phenol, 2 - methyl - 6 - (3,5 - dimethyl- 4 - methoxy - or - hydroxybenzyl) - phenol.
Patent GB-819516-A (GB)
Title: Improvements relating to an endless conveyor
IPC: A01D87/02
Filed: 1957-10-03
Abstract: 819,516. Endless elevators. JUSTESEN, O.L. Oct. 3, 1957, No. 30951/57. Class 78 (1). Agricultural produce is conveyed upwards along compartment 1 to fall therefrom into a waiting lorry by teeth 7 carried by the transverse bars 4 lying between the chains of an . endless multi-chain conveyer (not shown). Each transverse bar 4 is rotatably mounted and controlled by a pair of ears 5 guided by rails 14A. When a pair of ears reaches the end of the rails the bar rotates to lift the teeth 7 clear of the material and the conveyance thus ceases. The position at which this occurs may be varied at will by bar 8, the position of the end of which is defined by pins 9 which fit into the holes of a row of holes 10.
Patent GB-635173-A (GB)
Title: Improvements relating to protective hoods
IPC: A61F9/06
Filed: 1947-11-21
Abstract: 635,173. Respirators. ANGLO-IRANIAN OIL CO., and MACLEAN, T. T. Nov. 21, 1947, No. 30953. [Class 81(ii)] A protective hood has a filter inlet in the lower part of the face mask and an air inlet in the crown of the hood, so that the passage of air is in an upward direction across the face of the wearer. It also has an inner frame for supporting the crown of the hood on the wearer's head. In the form described a metal crown 2 is supported on the head by a frame member 7 and carries a skirt 5 of cotton fabric impregnated with polyvinyl chloride. At the front there is a rigid facepiece 8 provided with a window 3 of cellulose acetate and having a stepped portion 13 with holes 15 allowing air to pass upwards through a charcoal or other filter 16. The air passes upwards in front of the face of the wearer, the flow being induced by the warmth of the face, and passes out through a hole 21, in the crown, and a cowl 22.
Patent GB-1104570-A (GB)
Title: Carry save adder circuits
IPC: G06F7/50
Filed: 1966-07-11
Abstract: 1,104,570. Adder circuits. INTERNATIONAL BUSINESS MACHINES CORPORATION. 11 July, 1966 [12 July, 1965], No. 31015/66. Heading G4A. A binary circuit for use in high-speed multiplication distributes the data processing and the latching functions approximately equally between the two halves of a machine cycle. In the simplified circuit of Fig. 3, complementary output signals are established on lines 56, 60 in dependence on the values of data input signals on lines 59 during the period that a gating timing signal on line 58 is high and are latched in the set condition during the period that the gating signal is low. In operation, a high gating signal on line 58 produces a low output from a block 51 which is effectively an OR-gate controlling an inverter (blocks 51-53 are similar). If the data input signals on lines 59 are all low, block 50 produces a high output to block 53. The resulting low output signal on line 56 is applied as an input signal to block 52. When the gating signal on line 58 drops low, the output on line 57 rises to maintain the existing condition of block 53 regardless of the values of the input signals on lines 59. In the circuit of Fig. 4, which shows one denominational order of an adder circuit for generating sum and carry signals from three input signals A, B, C and their complements, blocks corresponding to blocks 51-53 of Fig. 3 have superscripts added. Block 50 is now replaced in the upper part for generating the sum-modulo 2 and its complement of inputs A, B and C, by blocks 65-68 each having a different combination of three inputs, and in the lower part for generating carry signals, by blocks 77-79 each having a different combination of two inputs. An amplifier 72 is added to equalise the number of components in each of the signal paths.
Patent GB-1299417-A (GB)
Title: Fluoranthene bis-basic ethers and thioethers
Inventor: FLEMING ROBERT WILLERTON
IPC: C07D295/08
Filed: 1971-07-02
Abstract: 1299417 Basic fluoranthenes RICHARDSONMERRELL Inc 2 July 1971 31139/71 Heading C2C Novel bases of the Formula I wherein each Y is the same and is oxygen or divalent sulphur; and each X is (1) the group -A-NR<SP>1</SP>R where A is C 2-8  alkylene such that the amino nitrogen and Y are separated by at least 2 carbon atoms; R and R<SP>1</SP> are individually hydrogen, C 1-6  alkyl, C 3-6  cycloalkyl, C 3-6  alkenyl having the unsaturation in other than the 1-position; or R and R<SP>1</SP> together with the nitrogen to which they are attached is pyrrolidine, piperidino, morpholino, or C 1-3  alkylipiperazino; or (2) the group. wherein n is zero, 1 or 2, m is 1 or 2 and R<SP>2</SP> is hydrogen, C 1-6  alkyl or C 3-6  alkenyl having the unsaturation in other than the 1-position; wherein one of the side chains XY is on the naphthalene portion and the other is on the benzene portion of the fluoranthene ring and pharmaceutically acceptable acid addition salts thereof may be prepared by reacting (a) a fluoranthene diol or dithiol of the formula or an acetate diether thereof with a haloalkylamine Hal-A-NRR<SP>1</SP>, or a halogen substituted heterocyclic compound in the presence of base, wherein Hal is chlorine, bromine or iodine or (b) a compound with an amine RR<SP>1</SP>NH wherein Hal is as above. The intermediate compounds (4) in which Y is oxygen may be prepared by reacting a dihydroxyfluoranthene with an α-#-dihaloalkane. Pharmaceutical compositions of the compounds I show antiviral activity when administered orally, buccally, parenterally or by inhalation with the usual excipients.
Patent GB-419353-A (GB)
Title: Improvements in and relating to wheels for vehicles
IPC: B60B3/16
Filed: 1933-02-04
Abstract: 419,353. Vehicle wheels. KELSEYHAYES WHEEL CORPORATION, 3600, Military Avenue, Detroit, Michigan, U.S.A. Feb. 4, 1933, No. 31154/34. Convention date, Feb. 23, 1932. Divided out of 419,209. [Class 144 (i).] The one-piece pressed hub of a sheet-metal wheel comprises a radial, axially-off-set, mounting-flange which is connected to one end only of the hub by an inclined or generally axiallyextending part. In the form shown in Fig. 2, the hub comprises an annular part 58 formed with tubular spoke-receiving portions, and a back flange 59 merging into the mounting- flange 61 through a coned seating-portion 62 arranged substantially in the mid-plane of the wheel. In the modification shown in Fig. 3, the mounting-flange, 71, which is arranged in the mid-plane of the wheel, is connected to the front flange 69 of the hub by a coned portion 68. The spokes and spoke-receiving portions may be formed as described in Specifications 419,209 and 419,340.
Patent GB-656114-A (GB)
Title: Electrical generating apparatus
IPC: H03K17/54
Filed: 1948-12-01
Abstract: 656,114. Pulse generating circuits; pulsing carrier frequencies. RADIO CORPORATION OF AMERICA. Dec. 1, 1948, No. 31154. Convention date, Dec. 6, 1947. [Classes 40 (v) and 40 (vi)] In a circuit for charging an element such as a capacitor or crystal, an oscillator is keyed in response to control pulses and the output of the oscillator is rectified and used to charge the element. The Figure shows a circuit for generating high voltage pulses across a crystal 36 from low voltage control pulses applied at the input to capacitor 12. The input pulse is differentiated by network 11, 12, the first negative-going peak of the differentiated waveform cutting off the normally conducting valve 10, the anode potential of which rises and renders the oscillator valve 23 conductive. The oscillator thus generates a burst of sine waves which are rectified by rectifier 31 and the crystal 36 is charged to a positive D.C. potential. On the occurrence of the positive-going peak of the differentiated input waveform valve 10 is rendered conducting, thus cutting off the oscillator valve 23 and simultaneously the normally conducting valve 41 is cut-off. The rise in the anode potential of valve 41 renders the normally non-conductive valve 51 conductive and crystal 36 is discharged through this valve.
Patent GB-461370-A (GB)
Title: Improvements in or relating to thermo-couples for use in the temperature-control systems of electric furnaces
IPC: G01K1/08
Filed: 1935-11-12
Abstract: 461,370. Thermo electric batteries. SADLER, A. (Electric Furnace Co.) Nov. 12, 1935, No. 31223. [Class 53] A thermocouple d<1> for use in temperature-control systems of electric furnaces is contained in a casing a through which air is drawn to remove gases which leak into the casing. The couple d<1> is located in a chamber d<2> at the bottom of the casing the remainder of which is divided by a partition g into two compartments c, b When the apparatus is in use air is drawn into the compartment c,through an inlet a<2>, then into the chamber d2 and compartment band through an outlet a<3>. A ring e or other stop limits the extent to which the apparatus can be inserted in the furnace chamber.
Patent GB-1471635-A (GB)
Title: Apparatus for rotatably supporting and driving a tube
IPC: B23B31/40
Filed: 1975-07-25
Abstract: 1471635 Grinding tubes; turning MASCHINENFABRIK AUGSBURG-NURNBERG AG 25 July 1975 [27 July 1974] 31291/75 Headings B3D and B3T A device for rotatably driving a tube 12 and, in use, disposed within the tube, comprises at least one rotatable supporting roller 1 and at least one counteracting pressure roller 2 arranged on a common non-rotatable support, the pressure roller or rollers being movable in a radial direction, and at least one of the rollers being driven. As described, the device has the supporting roller 1 which engages the tube at a position where it is to be machined by a timing tool or grinding wheel 13, the roller being freely rotatable on needle bearings 17 on a spindle 14 axially displaceable in a guide tube 16. Annular grooves 22, 23 are formed in opposite faces of the supporting roller, the groove 22 being engaged by a conical drive roller 4 on a shaft 18 connected by a joint 17 to a drive shaft 15, springs 5 urging the drive roller 4 into engagement with the groove 22. The axial thrust of the roller 4 is taken up by a conical roller 24 engaging the groove 23 and mounted on a shaft 28 bearing against springs 25. Each of the shafts 18, 28 extends through a respective pressure roller 2 freely rotatable on its shaft, each shaft being supported by slide shoes 9 and supports 11 movable radially by hydraulic pistons 6 in casings 3 mounted in the spindle 14, each casing supporting a roller 7 for counteracting the force of the pressure rollers 2. A tailstock 21 supports the end of the device. The device is used for grinding or turning bands on the tube which may be the rotor of a gas centrifuge.
Patent GB-1028293-A (GB)
Title: Drives suitable for operating fans of automotive vehicles
Inventor: ELMER ARTHUR ERNEST HENRY
IPC: F01P7/08
Filed: 1962-08-15
Abstract: 1,028,293. Friction clutches. DOWTY HYDRAULICS UNITS Ltd. Aug. 7, 1963 [Aug. 15, 1962], No. 31347/62. Heading F2C. A temperature-controlled clutch between a driving pulley 18 and an engine cooling fan 46 comprises an expansible temperature sensitive element 22 on the water impeller 12, expansion of which acts through a rod 28 and cam 32 to pivot anticlockwise levers 33 having cam surfaces 36 which at a predetermined temperature pass over a projection 37 on a lever 38 biased anticlockwise by a spring (not shown) that urges the projection 37 down the right-hand face of the cam 36 to move right a presser plate 40 for clutch engagement. A driven disc 45 integral with a fan hub 44 is clamped, for clutch engagement, between the presser plate 40 and a back-plate 48 carried by a block 20 fast with the pulley 18. On contraction of the element 22 a spring 30 moves left the cam 32 and the levers 33 are rotated clockwise by a spring (not shown) until the projection 37 passes over the cam 36 to disengage the clutch. The temperature at which the clutch engages may be adjusted by a screw 28a which axially positions the cam 32 on the rod 28.
Patent GB-867889-A (GB)
Title: Manufacture of graphitizable petroleum coke
IPC: C10B55/00
Filed: 1958-10-01
Abstract: In a process for producing a coke which when calcined and graphitized has a longitudinal coefficient of thermal expansion per  DEG C. not substantially above 0.55 X 10-6 the charge stock which is subjected to coking conditions of temperature and pressure consists of 68-90% by weight of a tar containing a large proportion of aromatic hydrocarbons and 10-32% by weight of a heavy liquid refinery residue. Preferably the charge stock contains 75-85% by weight of the tar and 15-25% by weight of the refinery residue.  The tar containing the large proportion of aromatic hydrocarbons is produced by thermally cracking a charge stock consisting of the residues from catalytic cracking or coking processes, gas oils produced by thermal or catalytic cracking or coking processes or other high boiling products of high temperature processes.  The heavy liquid refinery residue may comprise one or more of a Virginian reduced crude, a Duo-Sol extract, a furfural extract or hydroformer bottoms.  The coke producing charge stock is coked in a vertical drum for a period of several hours at a pressure of about 65 p.s.i.g. and a temperature between 830 DEG  and 900 DEG F., the contents of the drum being stirred vigorously in one direction during the coking period.  The coke thus produced is calcined at between 1800 DEG -3600 DEG F., and finally graphitized at between 4500 DEG -5500 DEG F.
Patent GB-1195340-A (GB)
Title: Heating Means for at least one Thermo-Electric Battery for Supplying Current for a Short Limited Period
Inventor: DIEHL KARL
IPC: H01L35/30
Filed: 1968-07-01
Abstract: 1,195,340. Heating means for thermoelectric devices. K. DIEHL. 1 July, 1968 [4 July, 1967], No. 31421/68. Heading H1K. Means for heating thermoelectric cells 2 for a limited period by chemical reaction comprises disposing the cells in a cylinder 1 and surrounding by combustion material capable of burning quickly and containing up to 25% by weight of a reducing agent e.g. silicon, enclosed by a metallic layer 4 to separate therefrom a fusible substance 5. An oxidizing agent 7, e.g. a mixture of barium oxide and vanadium pentoxide, is positioned within the combustion material which, on operation of an electrical or mechanical ignition device 8, burns to heat the cells to a temperature of 650 C. within a period of 0À5 to 1 second. During the heating process the fusible substance 5 melts to elongate the heating period. Additionally, when the temperature of the combustion material exceeds 320 C. the oxidizing agents react together to produce oxygen which combines with the surplus silicon not used during the combustion of the combustion material to release thermal energy which slows the cooling process of the combustion material. The fusible substance is separated from the side of the cylinder by an insulating layer 6 of, for example. asbestos or foamed carbon.
Patent GB-517052-A (GB)
Title: High frequency transmission networks
IPC: H01Q5/50
Filed: 1938-10-31
Abstract: 517,052. High-frequency transmission systems. STANDARD TELEPHONES & CABLES, Ltd. Oct. 31, 1938, No. 31442. Convention date, Nov. 16, 1937. Addition to 491,359. [Class 40 (iv)] [Also in Group XL] A high-frequency transmission circuit 105, Fig. 1, contains two loops 108 interconnected by an impedance such as an open line 111, a closed line, Fig. 2 (not shown), an inductance, Fig. 3 (not shown), or a condenser, Fig. 4 (not shown). By selection of the lengths # 1 , # 2 , # 3 , and the impedance 111, the network can be made to reject two frequencies and may be used to isolate a receiver from two local transmitters, Fig. 11 (not shown), or isolate each of three transmitters or receivers having a common aerial, Fig. 12 (not shown). When a concentric cable is used the impedance is preferably a condenser plate 621, Fig. 6, adjustable externally.of the cable. The impedance may be used to accurately tune the network to reflect a single frequency, or for matching, Figs. 7, 8; 9, 10 (not shown). Such a matching network in a transmission line may be used as a support for the line, Fig. 13.
Patent GB-214288-A (GB)
Title: Improvements in electric generators or motors
IPC: H02K31/00
Filed: 1922-11-18
Abstract: 214,288. Jones, J. H., Turner, J. L., and O'Keeffe, T. R. Nov. 18, 1922. Homopolar machines; coils; collecting-rings.- A dynamo-electric machine intended to generate or to be operated by continuous current consists of a number of field magnets 2 having radiallydisposed poles 3 extending to each end of the armature, all the poles at each end of the armature being of like polarity, and of an armature comprising a number of coils 20 wound on softiron cores 18 and enclosed in soft-iron tubes 21, the cores terminating in poles 19. The coils are set in a brass drum 11, ventilation holes being provided both in the drum and in the coiltubes 21. The coils are competed to collecting-rings 26 attached by screws 27 to the drum 11 and insulated from it by rings 28. The coils of the field magnets are connected to the brushes. Specifications 85/82 and 1692/82 are referred to.
Patent GB-642757-A (GB)
Title: Improvements in or relating to the frequency-stabilisation of oscillators
IPC: H03J7/04
Filed: 1947-11-28
Abstract: 642,757. Automatic frequency control systems: PHILIPS ELECTRICAL, Ltd. Nov. 28, 1947, No. 31561. Convention date, Sept. 16, 1946. [Class 38 (iv)] Relates to means for synchronizing a controlled oscillator with a standard oscillator of the kind in which the oscillators beat with each other in two mixers arranged to give two quadrature-related versions of the beat frequency ; and consists in deriving the frequencycorrecting voltage by giving a further phase shift, by means including a diode valve, to one of the beats to bring it into phase agreement or phase opposition with the other beat, and by applying the beats to a mixer tube. As shown, one input wave f is applied to a phasing- network A which supplies quadrature phases to two mixers M1, M2. The other input f2 is applied in parallel to the mixers. The beat output from the mixer M1 is fed with 90 degrees phase shift through a, resistor 3 and condenser C1 to the inner grid g1 of a multi-grid valve B, and the beat output from the other mixer M2 is fed without phase shift through a resistor 4 and condenser C2 to an outer control grid g3. The voltages on the grids are thus brought into phase agreement or phase opposition according as f1 is > or < f2, and the anode voltage R of the valve B can be used for restoring synchronism. The grid g1 is earthed through a diode valve D, and the cathode is biased by resistors W, so arranged that the diode does not carry current unless the grid is sufficiently negative to cut off the current in the valve B. When the beat is of zero or such low-frequency as to be blocked by the condensers C1, C2, the output voltage at the mixers is applied through high resistances 6, 7 to the inner grid g1 of the valve B which in this case operates as a simple amplifier. In a modified circuit (Fig. 4, not shown) beats of very low frequency, or other slow variations, are applied through resistors from the mixer outputs to the control lead R without amplification in the valve B. -
Patent GB-1352914-A (GB)
Title: Measuring devices
IPC: G02B6/04
Filed: 1971-07-06
Abstract: 1352914 Photo-electric measuring apparatus H ULRICH 6 July 1971 [10 July 1970] 31595/71 Heading G1A In a measuring device, one or more light guides 19', are provided to conduct light both to and away from a curved section of light guide which is located in the region in which the measurement is being made and is arranged to return varying amounts of light to a detector according to the amount of liquid in the measurement region covering the curved section. Different applications are described. Pressure measurement. The pressure in a chamber 42 governs the extension of a bellows arrangement 43 containing a liquid 44. The combined input and output guides 19' dip into the liquid. As the level increases so that more liquid contacts the guides, less light is totally internally reflected therein. Interface detection. The interface between two liquids is detected using a light guide inserted into the chamber containing the liquid mixture Fig. 8, (not shown). The photo-cell output triggers one of two threshold devices, according to the interface position. The light guides may comprise a plurality of optical fibres, and the input and output beams may be separated by a partially reflecting glass plate.