baber/WOPTO huggingface dataset:
Patent GB-1378861-A (GB)
Title: Light-sensitive copying compositions
Inventor: REICHEL M K
IPC: G03F7/12
Filed: 1971-11-22
Abstract: 1378861 Photo-sensitive materials KALLE AG 22 Nov 1971 [23 Nov 1970] 54048/71 Heading G2C A photo-sensitive material comprising (1) a condensable diazonium salt of formula:- wherein R 1  to R 4  are hydrogen, halogen, alkyl with 1 or 2 C atoms or alkoxy with 1 to 4 C atoms and Y is either a single bond or-o-, -s-, -NH-, or- CONH- and X is an anion or a triazene derived therefrom, (2) a water-soluble polymeric binder free from cross-linking groups and (3) a substance which is capable of cross-linking the binder in the presence of the diazonium salt and being either (a) a compound containing a methylol group or an esterified or etherified methylol group containing 1 to 4 C atoms in the acyl or alkyl group or (b) a compound containing an acetal, semi-acetal or cyclic acetal group obtained by reaction of a methylol group with an aldehyde with 1 to 4 C atoms. The material may be coated on a screen support, imagewise exposed, developed, optionally heated to harden the resist, to produce a screen stencil. The light-sensitive layer may contain a dye and a plasticizer such as dibutylphthalate. Alternatively a Cu foil/epoxy resin laminate may be used as a support and printed circuits be produced. The water-soluble polymer may be polyvinyl alcohol which may be partially acetylated, gelatine, casein, polyacrylic acid, partially hydrolyzed polyvinyl acetate and methyl or hydroxyethyl cellulose. Specified cross-linking agents are those where the above specified groups are directly attached to (a) the nitrogen atom of a primary or secondary amide, urea or melamine or (b) a phenol or phenol ether or a heterocyclic compound. N, N-dimethylol urea is the preferred compound but compounds such as glycollic acid and N-methylol- 4-azido-benzamide or-cinnamic amide and polymers such as polyvinyl hydroxymethyl ether and N-methylol polyacrylamide may be used.
Patent GB-1487178-A (GB)
Title: Fuel injection pumping apparatus
IPC: F02M59/34
Filed: 1973-11-23
Abstract: 1487178 Fuel injection pumps CAV Ltd 15 Nov 1974 [23 Nov 1973] 54410/73 Heading F1A [Also in Division F2] In fuel injection pumping apparatus wherein a feedpump 23 supplies fuel to an injection pump (10-19) through a passage 20 containing a variable throttle (21), the output pressure of the feedpump 23 is controlled by a relief valve comprising a piston 25 loaded at one end by a piston 28 subjected to the delivery pressure upstream of an orifice 24 and subjected at its opposite end to the pressure downstream of the orifice, the resulting movement of the piston 25 controlling the opening of a bleed port 27. The piston 28 is smaller than the piston 25 and springs 30, 31 may be provided for urging the pistons in a direction tending to close the bleed port 27. A non-return valve 32 for limiting the maximum pressure downstream of the orifice 24 is connected in parallel with the latter. The orifice 24 may be formed in a spring- loaded plate (33) which constitutes the non-return valve 32. By providing a flat (37), Fig. 1 (not shown) on the piston 25, pressurization of the pump inlet can be used to cause displacement of the piston away from the piston 28 to allow fuel to flow past the flat and by-pass the feedpump thereby purging the apparatus of air.
Patent GB-549960-A (GB)
Abstract: 549,960. Calculating machines: BALL, W., KEEN, G. P., and BRITISH ADDING & CALCULATING MACHINES, Ltd. March 11, 1941, No.3335. [Class 106 (i)] A key-controlled machine of the kind in which the keys are depressed against the action of resilient means, and particularly a calculating machine in which the keys are depressed to set up amounts before the machine operation is initiated, has each key in a column or group arranged to engage a resiliently - tensioned flexible member in such a manner as to flex the tension member when a key is depressed and thus provide a returning force for the key, means being provided for varying the tension of said flexible member whereby its action on all the keys in a column or group is simultaneously varied. The key shanks 24, guided by plates 31, 32, are forked at 34 to straddle a helical tension spring 26, one end of which is secured to a hooked pin 27 adjustably secured by nuts 30 to the usual locking plate 128, while the other end is secured to a bar 23 common to all the springs and carried by two lever arms 35, one of which extends through a slot in the casing and is arranged resiliently to engage locating niches and has a manipulating knob 39, movement of which adjusts the tension of all springs. Depression of a key pushes the locking plate rearwards against the tension of spring 26, until nose 36 snaps over the abutment 37 on the key shank to lock the key in depressed position. The helical spring may be replaced by a spring-tensioned flexible cable. The spring or cable may be attached to a fixed part of the machine instead of to the locking plate, which then has a separate spring. Specifications 288,672, [Class 106 (i)], 343,448, 540,283, 540,311, 540,312, 540,313, 540,314, 540,315, 540,316, 540,317, 540,318, 540,319 and 540,320 are referred to.
Patent GB-1331544-A (GB)
Title: Reel for safety belts
IPC: B60R22/405
Filed: 1971-11-29
Abstract: 1331544 Reel for safety belt W-D KLINK 29 Nov 1971 [30 Nov 1970 31 Dec 1970] 55320/71 Heading A3V A motor vehicle safety belt reel comprises a belt winding drum 2 which rotates in a housing 1, a toothed locking disc 4 which rotates with the drum, a loosely carried coupling disc 8 having two twoothed surfaces 9 and 10 which is rotatable relative to the drum and disc 4 and is axially displaceable on relative rotation in contact between the toothing 9 and the disc 4 due to the inertia of the coupling disc on rapid belt withdrawal to bring the toothing 10 into simultaneous engagement with a toothed arresting disc 7 fixed to the housing 1 thereby arresting the drum from further rotation. A brake ring 12 with a pair of elastic brake blocks 13 is swing- ingly mounted by a bearing bolt 17 and by the ends 19 of a helical spring 18 to surround the coupling disc 18 and the blocks 13 engage the wedge shaped periphery of the disc 18 to prevent its rotation and thereby arrest the drum 2 in the event of an acceleration or a collision of the vehicle causing the ring 12 to swing. There may be provided a plurality of apertures around the housing 1 so that the bolt 17 and hence ring 12 can be mounted correctly regardless of the position of the reel in the vehicle. Additional weights 20 alter the swinging characteristics. A torsion may be provided inside the hollow belt drum 2 to couple the belt drum and the locking disc 4 thereby to absorb much of the kinetic energy of a wearer of the safety belt or alternatively an energy absorber may be connected between the housing 1 and the arresting disc 7. A spring 3 is provided to automatically rewind the belt after locking of the drum in an emergency.
Patent GB-1447551-A (GB)
Title: Hydraulic fluid flow control apparatus
IPC: F15B11/16
Filed: 1973-11-30
Abstract: 1447551 Fluid regulation WESTINGHOUSE BREMSEN UND APPARATEBAU GmbH 30 Nov 1973 [11 Dec 1972] 55610/73 Heading G3H An hydraulic fluid-flow control apparatus for controlling flow between a fluid source 1, Fig. 1, and consumers 3a-d, has a respective flow metering restriction 5a-d and a respective pressurebalancing variable throttle 6a-d in each consumer supply line, the throttles being inter-connected to receive a common control input. The latter is derived from the supply lines via double-acting non-return valves 8, 9, 10 arranged to communicate the highest of the supply pressures as the control input to each throttle. The pressure of the control input acts on one end of each throttling spool 12 subjected at its other end to consumer supply pressure, whereby the spools assume positions wherein they throttle the supplies to effect pressure balance and maintain the desired ratio of flowrates as set by the restrictions 5a-d regardless of the loadings on the consumers. A similar hydraulic apparatus having five consumers is illustrated in Fig. 2 (not shown).
Patent GB-1334092-A (GB)
Title: Transmission arrangements for binary coded information
IPC: H04L5/02
Filed: 1971-12-08
Abstract: 1334092 Digital transmission; stations connected to a common channel LICENTIA PATENT-VERWALTUNGS GmbH 8 Dec 1971 [9 Dec 1970] 57135/71 Heading H4P An addressing system for a number of stations permanently connected along a line or on a loop comprises means for adding the unique address of a code subscriber to signals already existing on the line to produce a binary coded summation signal which is extracted by a receiver. The addresses may comprise orthogonal functions and a calling station may add an address by modulo-2 addition. The system and frame synchronization must be provided by at least one clock generator emitting signals which may be non-changing or changing according to a determined pattern. With multiple sync. generators, mutual synchronization must be provided but on a loop a single sync. generator only is necessary with stand by facilities. An initial sync. sequence may be transmitted to all stations. In a loop arrangement a delay network may be incorporated to compensate for propagation delays and a single sync. generator with stand by facilities is employed. A double line system has directional monitoring so that messages are only sent in the required direction. For two directions of traffic with separate channels, circuit sync. generators G1, G2 are provided for each direction and separate transmitters S and receivers E (only one each shown) are employed. At the start of a message the direction of transmission is not known hence the initial call has to be made in both directions and similarly a receiver is receptive in both directions. Once communication has been established, only the channel necessary is used and signals are not passed to other parts of the system. Fig. 4 (not shown) illustrates a loop arrangement having a loop propagation delay compensator (LA) to prevent messages circulating endlessly. A called subscriber extracts them from the summation signal which extracts are normally stored for a duration of one frame or one circulation period. A plurality of loops and sets of double lines may be linked preferably through buffers which compensate for small phase shifts and frequency differences. The address may alternatively comprise quasiorthogonal functions whose cross correlation functions are approximately zero.
Patent GB-1271808-A (GB)
Title: Centrifugal fan
IPC: F04D29/44
Filed: 1969-11-24
Abstract: 1,271,808. Centrifugal fans. ELECTROLUX Ltd. Nov. 24, 1969 [Dec. 20, 1968], No.57356/69. Heading F1C. [Also in Division A4] A centrifugal fan unit has one or more stages each including a housing having an axial outlet and containing an impeller 13 which delivers air to the outlet via an annular passage formed between the housing and the periphery of wall 14, and via a coiled spring-shaped element 18. Substantially the whole of the air delivered by the impeller passes through the turns of the element 18 so that the air-flow slows down and thereby increases in pressure. The element may be arranged in several windings around the axial outlet. Stationary radial guide vanes may be arranged between the wall 14 and the housing.
Patent GB-1222597-A (GB)
Title: Catalytic dehydrogenation of alkenes
IPC: B01J27/18
Filed: 1968-12-03
Abstract: 1,222,597. Dehydrogenating alkenes. PHILLIPS PETROLEUM CO. 3 Dec., 1968 [4 Dec., 1967], No. 57364/68. Heading C5E. Alkenes are oxidatively dehydrogenated in the presence of a phosphoric acid or tin oxide catalyst containing from 6 x 10<SP>-6</SP>   to 2À5 x 10<SP>-2</SP> grams of phosphorus per square metre of surface area of the tin oxide. The process is illustrated by conversion of butene-2 to butadiene.
Patent GB-1369880-A (GB)
Title: Television image transmission systems
IPC: H04N5/84
Filed: 1971-12-10
Abstract: 1369880 Film scanning NIPPON COLUMBIA KK 10 Dec 1971 [12 Dec 1970 19 Dec 1970 21 Dec 1970] 57563/71 Heading H4F [Also in Division G2] A colour coded monochrome film 6 is located in the front focal plane of lens 12 and a Fourier transform is formed in the rear focal plane, the inverse transform being effected by a lens 14, and a spatial filter 13 is located in the transform plane. The spatial filter has an amplitude transmission which is the reciprocal of the spatial frequency response of an image pick-up tube 15 and/or the film 6. The film 6 is previously encoded using two angled striped filters located between the scene and the film. One filter comprises alternate strips which pan white light and white light moving the red component. The other filter has alternate transparent strips and blue-blocking strips. The spatial filter 13 consists of a central circular area 130 (Fig. 8) which passes only green light, a pair of diametrically opposed circular areas 133, 133 which pan only red light and are located adjacent area 130, and two diametrically opposed circular areas 135, 136 which pass only blue light. The diametric lines through areas 132, 133 and 135, 136 are perpendicular respectively to the strips of the filters used for encoding the film 6. The radii of the circles on which the light filter area of spatial filter 13 are related to the transmission bandwidths of the colour television signals to be by tube 15. The spatial filter selectively filters out those areas having a low spectrum distribution and this increases signal to noise ratio without decreasing the information content. In a further filter only two light inhibiting regions 139a, 139b (Fig. 9) are provided. These are symmetrical about the axis L and are formed at the intersections of lines through points 132a, 133a, 135a, 136a (corresponding to areas 132, 133, 135, 136 of Fig. 8) parallel respectively to the diametric lines through 132a, 133a and 135a, 136a.
Patent GB-1487550-A (GB)
Title: Radio receiving systems
IPC: H04B7/08
Filed: 1974-12-06
Abstract: 1487550 Diversity reception systems RACAL COMMUNICATIONS Ltd 6 Dec 1974 [18 Dec 1973] 58456/73 Heading H4L In a diversity reception system of the type in which one or other of two radio receivers (connected to antennae which receive signals from different directions and thus subject to different fading characteristics) is connected to the system output in accordance with a predetermined criterion, e.g. the relative magnitudes of respective A.G.C. signals, a selected receiver output signal is connected when its instantaneous audio output passes through zero in a given direction and the other receiver output signal is disconnected when it previously passes through zero in the predetermined direction. By this means noise due to switching transients is avoided, short gaps which may occur in the output being undetectable in the case of speech. The A.G.C. signals from the two receivers A, B are supplied at 18, 20 to a comparator 16 whose output controls FET gates 4, 8 in the receiver output circuits via trigger circuits 38, 40. The operation (opening or closing) of each gate is deferred until the instantaneous audio signals 70A, 70B are at zero as detected by a zero crossing detector in the corresponding channel. The de - tected zero crossings control the operation of the trigger circuits and hence the timing of the switching procedure.
Patent GB-1449458-A (GB)
Title: Analogue function generators
IPC: G06G7/20
Filed: 1973-12-18
Abstract: 1449458 Electric analogue function generators SULZER BROS Ltd 18 Dec 1973 [20 Dec 1972] 58563/73 Heading G4G An electric analogue function generator generating a function of the general form where n, m are integers greater than 1 (in Fig. 2 n = m = 4) comprises multipliers 50-52 serially connected to generate from x, x<SP>2</SP>, x<SP>3</SP>, x<SP>4</SP> on' lines 55, 58, line 59 carrying a constant signal, 5 adders 70, 71, 72, 73, 74 each having an input connected to one of the lines through sealers indicated by circles. The outputs of adders 71 to 74 are connected to first inputs of multipliers 81 to 84 the second inputs of which are supplied with.y, y<SP>2</SP>, y<SP>3</SP>, y<SP>4</SP> respectively which powers of y are generated by serially connected multipliers 90, 91, 92. The outputs of multipliers 81 to 84 are connected to further inputs of adder 70, the output of 47 of which will give the desired function z. Fig. 3 (not shown) uses a modified circuit for obtaining the powers of y using fewer multipliers because the y signal is fed to the second inputs of multipliers 81 to 84 and the outputs of the multipliers are fed into the adder of the next stage downwards in the Figure.
Patent GB-1410937-A (GB)
Title: Feed rate control device for an electrolytic grinder
IPC: B23Q15/14
Filed: 1972-12-19
Abstract: 1410937 Electrolytic grinding HITACHI Ltd 19 Dec 1972 [20 Dec 1971] 58585/72 Heading C7B [Also in Division G3] The feed rate of an electrolytic grinder is controlled to maintain constant the number of sparks obtained between the workpiece and the electrode. In the case where the number of sparks detected is too high then the feed rate is reduced but if no sparks are detected over a given period then the feed rate is increased. Basically a memory circuit 15 stores a binary value that corresponds to the maximum feed rate and when an excessive number of sparks is detected the stored value is reduced to slow the drive motor 19. The sparks are detected by a resonant circuit connected between the grinding wheel 1 and the workpiece 2 and the perturbations of the working current are detected by shunt 5. The peak values of these signals are applied as pulses through AND gates 21 and 22 to a counter 11 for a period defined by the time setting circuit 10. According to the output setting 11b of counter 11 the number of output pulses is reduced by 1/2n. Once an initial delay produced by dead-time setting circuit 12 has elapsed the pulses pass through AND gate 23 into counter 14 for a period determined by time setting circuit 13. The output of counter 14 is reduced by 1/n and these pulses are applied through gate 25 to reduce the value stored in memory circuit 15. The stored value is read at 17 and used to set the speed of motor 19 and thus the feed rate. If no pulses are received during the time setting of circuit 13 a signal is applied to accelerator circuit 16 which provides an increase pulse to memory 15 to increase the feed rate. To facilitate grinding of 'hard' materials the circuit 20 operates on detection of the first spark to sharply reduce the feed rate by lowering the value stored in memory circuit 15. In a modified control arrangement the time taken to change the value stored in memory 15 is shorter when the feed rate is high and this is stated to improve the grinding efficiency.
Patent GB-1338234-A (GB)
Title: Sliding bearing
IPC: F16C33/20
Filed: 1970-12-10
Abstract: 1338234 Bearings GLYCO-METALL-WERKE DAELEN & LOOS GmbH 10 Dec 1970 [10 Dec 1969] 58673/70 Heading F2A A bearing member has a backing member 1 in one surface of which are a plurality of cavities in which is a filling of at least one fusible synthetic resin, the filling and support being covered with a bearing layer containing at least one fusible synthetic resin and particles of solid lubricant. The backing member is preferably of metal, e.g. steel on to which a porous metal layer, e.g. of bronze is sintered. The fusible synthetic resins are preferably thermoplastic fluoropolymers whose melting ranges are in the region of the peak temperatures to be expected on the surface of the bearing during operation. The lubricant additives are not fusible at the operating temperature and may be particles of bronze, graphite or high molecular weight PTFE. The bearing member is made by spraying a metal strip 11 which has been coated with a porous metal layer 12 with a pulverant filling material 3 and heating the strip with an infra-red heater 17 to cause the material to be drawn into the pores. The strip is then sprayed with the bearing material, also in pulverant form, and the strip again heated by an infra-red heater to melt the material on to the strip. The strip is compressed by a pair of rollers 20, 21 and cooled by a water spray 22 and wound on to a mandrel 15.
Patent GB-1449288-A (GB)
Title: Crimping yarn
IPC: D02G1/14
Filed: 1973-12-19
Abstract: 1449288 Crimping yarns E 1 DU PONT DE NEMOURS & CO 19 Dec 1973 [20 Dec 1972] 58765/73 Heading D1F A continuous process for crimping an undrawn synthetic monofilament yarn comprises drawing said yarn in a first zone; heating the drawn yarn without further drawing to a heat setting temperature; crimping the heated yarn in a second zone separate from the first zone by passing the yarn through the nip between interdigitating driven gears without further drawing the yarn in the crimping step; and forwarding the yarn from the second zone at a lower tension to a collecting location. The yarn 10 from a bobbin 12 is drawn between feed rolls 14, 16 and stepped draw roll 20, the draw point being located on snubbing pin 18. The drawn yarn is then passed to a heater, e.g. a helical electrically heated wire 44, or a hot plate or an oven, and then passed via guides 32 to the driven gears 34, preferably protected by a housing 42. The crimped yarn 52 is then forwarded under a low tension of less than 0.05 gm/denier, preferably less than 0.02 gm/denier, and cooled during passage to a smaller diameter portion 26 of the stepped draw roll 20. The crimping gears preferably comprise two sections, either integral or separated, one section having gear teeth 58 which engage with similar teeth on the other crimping gear 34, the yarn being passed through the nip of these teeth 58 to become crimped; the other section has teeth 60, preferably blunt teeth, which engage with similar teeth on the other crimping gear 34 to drive the gears. The degree of intermeshing of the teeth on the crimping section is chosen to prevent further drawing of the yarn between the teeth.
Patent GB-1390685-A (GB)
Title: Beam restoration
IPC: E04C3/18
Filed: 1972-12-20
Abstract: 1390685 Restoring wooden beams BOUWECONOMISCH EN - TECHNOLOGISCH ADVIESBUREAU BV 20 Dec 1972 [20 Dec 1971] 58953/72 Heading E1S In order to restore a decayed end of a wooden beam in a building, where the end is supported by, e.g. a wall, a hole 5 is drilled into the affected area, a loosely-fitting reinforcement rod 6 or tube is inserted into the hole, and the hole is filled up with a hardening plastics material, e.g. an epoxy resin material. As shown, the plastics material will normally fill the space 3-4' left by the decayed timber and will impregnate the affected area 1a. If a tube is employed as reinforcement, the plastics material can be injected through it. Alternatively the plastics material can be injected in through the wall to fill up the hole. The reinforcement may be metal or glass fibre reinforced plastics. Permeable spots in the wall can be pre-treated with epoxy resin and a filler.
Patent GB-590305-A (GB)
Abstract: 590,305. Injectors. EDWARDS & CO. (LONDON), Ltd., W., and TILLS, J. W. April 18, 1945, No. 9666. [Class 71] A flash boiler and nozzle unit 135 for evacuating a vessel 132 is supported in a conduit 134 sloping downwards from a high vacuum connection 133 to a backing pump 139, the unit being supplied with working fluid from storage means 143 external to the conduit and condensate from the fluid discharged through the nozzle being returned to the storage means. The conduit comprises two or more lengths 134, 137, 138 of successively decreasing cross-section towards the backing pump 139.
Patent GB-1454557-A (GB)
Title: Catalyst for methanol synthesis
IPC: B01J23/80
Filed: 1973-12-27
Abstract: 1454557 Methanol synthesis catalysts MITSUBISHI GAS CHEMICAL CO INC 27 Dec 1973 59824/73 Heading B1E [Also in Division C2] Catalysts consist of copper, zinc and boron oxides plus any incidental impurities. They may be made from the metal nitrates and borax by coprecipitation using sodium carbonate as precipitant followed by washing, drying, calcining, moulding, crushing and reduction.