baber/WOPTO huggingface dataset:
Patent GB-921889-A (GB)
Title: False signal rate stabilizer
IPC: G06K9/40
Filed: 1961-02-02
Abstract: 921,889. Limiting circuits; pulse radar. BENDIX CORPORATION. Feb. 2, 1961 [March 2, 1960], No. 4041/61. Classes 40 (6) and 40 (7). A pulse transmission system suppresses pulses whose amplitude fails to reach a variable level which depends upon the difference between the rate at which pulses leave the system and the pulse repetition rate of a reference oscillator. The arrangement is used to suppress impulsive noise, more particularly in pulse radar. Pulse signals from line 24, Fig. 2, are passed through a base-level clipper comprising diodes 26, 27 and after amplification in amplifier 31 trigger a flip-flop 32. The output of this is taken off over line 15 and is also applied over diode 34 to the base of one transistor 35 in a cross-coupled pair 35, 36 forming a two stable state circuit. Pulses from the reference oscillator 18 are applied over diode 38 to the base of the other transistor 36 in the cross-coupled pair. The output from the collector of transistor 36 is integrated by network 45 and forms the bias on diodes 26, 27; the arrangement is such that this bias, i.e. the clipping level, increases as the number of pulses applied to the base of transistor 36 exceeds that applied to the base of transistor 35, i.e. in proportion to the number of false signals in the output from the flip-flop 32. In addition, a fixed bias is applied to the diodes 26, 27 from a potentiometer 44 connected to a bias source 6V. As applied to pulse radar (Fig. 3, not shown), pulse signals from the earlier stages of the receiver are passed to an arrangement as described with reference to Fig. 2, in which between the output of the two stable state circuit and integrating circuit a gate circuit is introduced, operating from the incoming pulses, which supplies a blanking gate of fixed duration after each transmitted pulse so that the output of the integrator is not disturbed by clutter return signal. The output of the arrangement is integrated in an integrator and applied to a p.p.i., and is also applied to a logic circuit the output of which feeds digital data device which may, e.g. provide for remote transmission of the data.
Patent GB-348178-A (GB)
Title: Composition for skating surfaces
IPC: C09K3/24
Filed: 1930-02-06
Abstract: 348,178. Skating rinks. GURTH, M. H., 47, Belle-Alliance-Strasse, Berlin. Feb. 6, 1930, No. 4054. [Class 20 (i).] A skating-rink mixture consists of an inorganic crystalline salt with a lactate, preferably of the same metal as the salt, Sodium thiosulphate with sodium lactate is one example given. The composition is stated to be improved by the addition of a sulphate, a carbonate, or a phosphate, or a mixture of two or all of these salts, to the thiosulphate.
Patent GB-588713-A (GB)
Title: Improvements in or relating to funnels and like filling devices
IPC: B67C11/04
Filed: 1944-05-27
Abstract: 588,713. Funnels for liquids. JACK, A. B. May 27, 1944, No. 4054. [Class 125 (ii)] The stem B of a funnel or like filling device I, which provides for automatic cessation of flow of liquid therefrom, is provided with an upward extension A surrounded by a tube C closed at its upper end, the length of that part of the tube C which surrounds the extension A being greater than the diameter of the tube, and the cross sectional area of the annular space R, or of the entrance thereto or exit therefrom, being less than that of the extension A, so that the extension does not run full. When the liquid in the container M covers the exit from the stem B, air is trapped in the stem; and flow ceases when the head O becomes equal to the head N. The tube C is then lowered, by pressing a pushbutton F, until the extension A is closed by a leather or other resilient washer D, when the funnel may be removed from the container. The body of the funnel I is so dimensioned in relation to the length of the spout B that the container M cannot be made to overflow without first causing the funnel itself to overflow.
Patent GB-266000-A (GB)
Title: Improvements in or relating to steam superheaters for locomotive or other fire tube boilers
IPC: F22G7/06
Filed: 1927-02-14
Abstract: 266,000. Superheater Co., Ltd., (Assignees of Schmidt'sche Heissdampf-Ges.). Feb. 13, 1926, [Convention date]. Fire and smoke tube superheaters.-A superheater has separate interdigitated header chambers 5, 6, and the elements 9 are each formed with two loops and are so arranged that adjacent smoke tubes 3 each contain two loops belonging to two different elements 9, 10 connected at their ends to form a double element. A double a element is connected to supplementary saturated and superheated steam headers 11, or the ends of the elements forming a double element are welded to tubes connected directly to the header chambers 5, 6. The fastening bolts of the double elements are arranged between like ends of the elements, and the heads 12<b> of the bolts are placed either in the wall of the saturated steam chamber or in the wall of the superheated steam chamber, but not between the two chambers. Adjacent smoke tubes containing a double element may be arranged diagonally instead of horizontally as shown,
Patent GB-483408-A (GB)
Title: Improvements in brakes
IPC: F16D65/09
Filed: 1937-02-11
Abstract: 483,408. Internal expanding brakes. BENDIX AVIATION CORPORATION. Feb. 11, 1937, No. 4110. Convention date, Feb. 12, 1936. [Class 103 (i)] An internal brake having one shoe applying another through adjusting-means 18 comprises a centralizing-device 20, secured to the backing plate and having arms 24, 26 and apertures through which extends the adjust. ing-means 18 connecting the two shoes 2, 4 and springs 36<1> to centralize the shoes. The apertures are contained in cross members 32, 34 held in notches 28, 30 in the arms 24, 26 by the springs 36<1>. The distance between the notches is the same as the width of the pinion 12 operating the adjusting-device so that the members 32, 34 normally engage both sides of the pinion. The pinion 12 is operated by a crown wheel journalled in plates clamped to the backing plate by a bolt which also clamps the device 20. The crown pinion shaft and the bolt are contained in slots in the backing plate so that the position of these parts can be adjusted. In a modification the arms of the centralizing-device 20 contain the apertures through which passes the adjusting-device.
Patent GB-179615-A (GB)
Title: Improvements in or relating to machines for making pneumatic tyre covers or casings
IPC: B29D30/14
Filed: 1921-02-04
Abstract: 179,615. Dunlop Rubber Co., Ltd., and Macbeth, C. Feb. 4, 1921. Tyres, elastic; special apparatus for making.- In a tyre-making machine comprising spinning- down discs B for laying fabric A<1> on a rotary core A, means are provided for spreading the arms B<3> carrying the discs B at the end of the forward stroke of the slide C so that the discs are held clear of the core during their return movement. In the construction shown in Figs. 1 and 2, the slide C is reciprocated by a rotating disc D having an eccentric boss D<1> which engages a slot in a rocking lever D<3> pivoted at its upper end to the slide. A second rocking-lever D<5> similarly actuated by an eccentric boss D<2> is adapted to advance a plunger D' relatively to the slide C at the end of the forward stroke. The plunger is fitted with an adjustable head D' which engages the extensions B<5> of the arms B<3> to effect the spreading movement of the discs B. In a modification, the lever D<3> is formed as a toothed sector engaging a rack on the underside of the slide C. The levers D<3>, D<5> may also be connected by links to the parts C, D' respectively. The speed of radial travel of the slide and discs may be varied by forming the lever D<3> with a suitably curved slot. Fig. 9 shows a modification in which the slide C and arms B<3> are actuated from a crank-shaft by rods E<1>, E<2> respectively. In a still further modification, the slide is operated by crank and connecting-rod mechanism, the plunger for actuating the arms B<3> being operated from an eccentric on the crank-shaft. In all cases, the arrangement is such that the separation of the discs is maintained until these are clear of the core during the return stroke.
Patent GB-641749-A (GB)
Title: Improvements in circuits for the stabilisation of the mean frequency of a frequency-modulated oscillation
IPC: H03J7/04
Filed: 1948-02-13
Abstract: 641,749. Automatic frequency control systems. PHILIPS ELECTRICAL, Ltd. Feb. 13, 1948, No. 4241. Convention date, Feb. 17, 1947. Addition to 619,139. Drawings to Specification. [Class 38 (iv)] In a system for automatically stabilizing the mean frequency of a frequency modulated oscillator in which a condenser is periodically charged through a two-diode arrangement from the oscillator and discharged through a resistance by a steady voltage produced from the oscillator by a second two-diode arrangement as in the parent Specification, the frequency of the oscillator is controlled by a voltage, taken from a tapping on the resistance, which varies from zero in magnitude and polarity according to the magnitude and sense of the mean frequency deviation without the necessity of biassing the diode circuits as in the parent Specification.
Patent GB-438591-A (GB)
Title: Improvements in the production of crepe threads and fabrics
Filed: 1934-02-10
Abstract: 438,591. Crepe yarns and fabrics. BRITISH CELANESE, Ltd., and DREYFUS, H., 22, Hanover Square, London, and FINLAYSON, D., c/o British Celanese, Ltd., Spondon, near Derby. Feb. 10, 1934, Nos. 4304, 4305, and 9302. [Classes 120 (iii) and 142 (iv)] In the production of highly twisted crepe thread of cellulose acetate, the thread is treated with hot water during the insertion of at least the last part of the crepe twist. The thread may be twisted in two or more stages, the hot water treatment being effected during the last or during all stages of the twisting. The treatment is preferably effected by drawing the thread off the end of a rotating package, if desired with an anti-balloon device as described in Specification 304,806, [Class 120 (ii)], and passing it into a receptacle containing hot water, e.g. at 98-100‹ C., via a small hole below the level of the surface ; the hole may be in the form of a fine tube to minimize leakage. The water may be under pressure. Twists of 70-90 turns per inch are quoted for different deniers. The threads may consist of continuous filaments or discontinuous filaments prepared as in Specification 424,683, 424,752, 424,830, or 424,879. The crepe threads may be sized at any stage, e.g. with sizes mentioned in Specification 348,589. The cellulose acetate crÛpe threads may be associated in the fabric with highly twisted crÛpe threads of other materials, e.g. natural silk or regenerated cellulose.
Patent GB-122319-A (GB)
Title: Improvements in Chimney Tops.
Inventor: DYKE GEORGE EBENEZER
IPC: F23L17/02
Filed: 1918-08-28
Abstract: 122,319. Dyke, G. E. Aug. 28, 1918. Chimney tops. - The outer pot a of a chimney top of known type, comprising the pot a with apertures a<2> near its lower end and an inner truncated pot b, is flared outwards at its upper end as shown. The internal cross-section of the inner pot may be uniform throughout its length.
Patent GB-524896-A (GB)
Title: Improvements in or relating to gas or other fluid pressure or volumetric governors
IPC: G05D16/16
Filed: 1939-02-10
Abstract: 524,896. Fluid pressure servomotors. DONKIN CO., Ltd., B., and DOE, E. E. Feb. 10, 1939, No. 4406. [Class 135] A gas or other fluid-pressure governor comprises in addition to the main governor j, a pilot governor e for light loads and an ejector or " inspirator " d connected to the main governor chamber k by a pipe l. The gas may flow in series through the " inspirator " and pilot governor valve or the "inspirator" may byepass the valve. The loading h on the main governor is less than the outlet-pressure in the conduit b, and is supplemented to open the main valve by the ejector action. Valves may be diaphragm, piston, or bell controlled.
Patent GB-529302-A (GB)
Title: Improvements in or relating to carbon sliding contact members for the collectors of electric vehicles
IPC: B60L5/20
Filed: 1939-02-10
Abstract: 529,302. Current collectors for electric vehicles. CONRADTY, E., and CONRADTY, O., (trading as CONRADTY, C.). Feb. 10, 1939, No. 4478. [Class 104 (iii)] A current collector comprises a carbon slider b having an outer mounting a applied in the molten state, and an interposed compressible metal cushion p shrunk thereon. During the cooling of a, the cushion is compressed to the dimension shown in Fig. 4. The cushion may consist of soft copper or aluminium gauze or sponge.
Patent GB-917517-A (GB)
Title: Method for providing contacts on semiconductor devices
IPC: H01L21/60
Filed: 1961-02-07
Abstract: 917,517. Semi-conductor devices. CLEVITE CORPORATION. Feb. 7, 1961 [March 11, 1960], No. 4516/61. Class 37. In a semi-conductor device, such as a Si transistor or diode, in which one or more pellets of A1 or an A1 alloy such as Al-Si eutectic is (are) alloyed to a semi-conductor body, a conductor is attached to the or each pellet by the steps of etching the device, e.g. in a 5 per cent caustic potash solution, heated, if desired, Niplating the device in an electroless Ni bath, soldering the conductor to the Ni-plated pellet, and then etching the device again, e.g. electrolytically in a 10% solution of H 2 SO 4 , to remove the Ni layer from the semi-conductor body. A number of devices may be plated and etched simultaneously, and each device may be mounted and, if desired, encased.
Patent GB-1393205-A (GB)
Title: Light intensity to digital converter using photon flux inte gration
IPC: G06V10/28
Filed: 1973-01-30
Abstract: 1393205 Photo-detector circuits ROCKWELL INTERNATIONAL CORP 30 Jan 1973 [13 March 1972] 4526/73 Heading G1A [Also in Division G4] A scanning system includes a number of means prechargeable to a certain reference voltage level and each dischargeable at a rate dependent upon the intensity of light sensed by a respective photoresponsive element. At a pre-set time after the precharging the voltage levels on the various means are sensed and for each means a single bit output indicative of the level is generated. The bits are passed to a register. The system may be used to scan embossed characters on a credit card. The prechargeable means in the circuit shown in Fig. 1 are n photo-diodes D 1. These are precharged by field effect transistors Q1. When exposed to light the charge on the photo-diodes reduces at a rate dependent on the intensity. At a pre-set time after the precharging a sampling pulse SAM causes each threshold circuit Q2, Q3 to develop a single bit signal which passes via Q4 to appear on the output of the associated stage of a shift register 23 1  - 23n. The register is controlled by clock pulse trains #1, #2, #3 which are suppressed from the time of precharging to the occurrence of pulse SAM. Each stage includes inverters Q5, Q6 and Q8, Q9 coupled by Q7. The output of each stage is fed back to the input via Q12 to maintain the state of charge of the f.e.ts. Data is read-out serially to output circuit 15. As each bit is read-out a bit is read in to the first stage via Q 11 so that when all the data is read-out the f.e.ts Q10, acting as a NOR gate, will provide a signal resulting in the appearance of a signal EOC at 14 indicating this fact. Signal EOC also appears if all the photo-diodes are discharged, as when viewing no portion of a character on a credit card. The circuits controlling the precharging and the sampling by SAM, and # clock pulse generator 13 are described.
Patent GB-1451283-A (GB)
Title: Joint endoprostheses
IPC: A61F2/38
Filed: 1974-01-31
Abstract: 1451283 Joint endoprotheses FRIEDRICHSFELD GmbH STEINZEUG-UND KUNSTSTOFFWERKE 31 Jan 1974 [10 Feb 1973] 04546/74 Heading A5R [Also in Divisions El and E2] A joint endoprothesis comprises an articular part 3 of substantially non-porous Al 2 O 3 -ceramic, which is subjected to sliding friction, and a fixing part 1, for fixing in a bone shaft, made of high strength steel provided with at least one substantially non-porous glass or glass-like coating on those surfaces which come into contact with animal tissue. The term glass or glass-like coating means a layer of glass, vitreous enamel or vitreous ceramic, if necessary attached to the metal by at least one intermediate metallic layer, e.g. galvanically applied. A porous layer of ceramic may be applied to the glass or glass-like coating in order to improve the fixation of part 1 to growing tissue. One embodiment, Figure 1, is a hip joint in which the fixing part 1 is to be seated in a femur up to a collar 2. Fixing part 1, made of very hard steel with a high creep resistance, is provided with a glass or glass-like coating, except on those surfaces facing generally-spherical articular part 3. Part 1 carries a peg 4 with a flat surface, serving to prevent torsion of the part 3. Articular part 3 is fixed to peg 4 with a suitable adhesive after part 1 has been implanted in the femur. The boundary surfaces 5 of parts 3 and 1 are flat, e.g. ground. An Al 2 O 3 -ceramic acetabulum 6 is polished to fit the articular part 3 and carries grooves 7 for obtaining direct fixation in a pelvic bone. In another embodiment, Figures 2 and 3 (not shown), an elbow joint consists of two fixing parts (8, 9) and two articular parts (10, 11). After implantation of the fixing parts (8, 9), pegs (12, 13) are fixed into corresponding recesses in articular parts (10, 11) respectively, with adhesive. Boundary surfaces (14, 15) are flat. and the surfaces of the parts (10, 11) which slide on each other are polished to fit together. Reference has been directed by the comptroller to Specification 1334584.
Patent GB-474874-A (GB)
Title: Improvements in or relating to cinematograph film magazines
IPC: G03B17/26
Filed: 1937-02-15
Abstract: 474,874. Kinematograph apparatus. SIEMENS & HALSKE AKT.-GES. Feb. 15, 1937, No. 4557. Convention date, Feb. 14, 1936. [Class 97 (i)] Reversible film magazines containing supply and take-up spools are provided with two spaces, each loosely housing and roughly centering a flanged spool and permitting the complete centering of the spools by supports carried in the kinematograph apparatus. As shown in Fig. 3, the body of the magazine comprises an upstanding rim 2 which, in conjunction with a partition 4 and projections 5, forms two spaces 6, 7, having substantial arcuate portions. Openings 8, 9 permit the entry of spool spindles, and springs 11, 12, reduce the effects due to intermittency of feed at the exposure aperture 10. The exposure plane is substantially in alignment with the guide passages thereto. The cover for the body is of similar form, except for the omission of the springs. The body and cover may be of artificial resin, sheet metal, &c., may have ribs 13 and grooves on the meeting surfaces, and may be secured together by a bolt through a hole 19 or by a U-shaped slide protecting the aperture 10 when the magazine is out of use.
Patent GB-1206576-A (GB)
Title: A method of firing elongated articles in a kiln
Inventor: REA ROBERT F
IPC: F27D5/00
Filed: 1969-01-28
Abstract: 1,206,576. Saggars. CHAMPION SPARK PLUG CO. 28 Jan., 1969 [14 Feb., 1968], No. 4617/69. Heading F4B. A support for use in loading a plurality of elongated articles into a saggar, comprises a sheet 12 of combustible material having therein a plurality of apertures adapted to receive and to hold the articles upright, said apertures having a centre-to-centre spacing greater than the maximum lateral dimension A of the upright articles. As shown, spark plug insulators 22 are held in cups, the sides 16 of which serve primarily to support the sheet 12 above the horizontal saggar bottom 20 and secondarily to hold the articles 22 straight in the cups. Preferably, the combustible material is a synthetic resin e.g. a low ash, non-filled, unoriented butyrate, polystyrene or polyethylene; however cellulose sheets can also be used.
Patent GB-731985-A (GB)
Title: Improvements in or relating to electric heating panels
IPC: H05B3/86
Filed: 1953-02-23
Abstract: 731,985. Transparent electric heating panels. PITTSBURGH PLATE GLASS CO. Feb. 23, 1953 [Feb. 23, 1952], No. 4971/53. Class 39 (3). A laminated structure for attachment to a transparent refractory sheet, e.g. to a windshield, comprises a transparent refractory base 10, e.g. glass, having a transparent electroconductive coating 14, e.g. tin chloride, and a pair of laterally spaced bus-bars 12 on a face thereof, and a sheet of plastic 16, e.g. polyvinyl butyral, laminated to the coated face and having a presspolished free surface. The polished surface is obtained by placing a non-adherent, e.g. a cellulose acetate, layer 17 and a polished plate glass sheet 18 over the plastic 16 and heating and pressing the structure. Prior to fixing to a windshield, the parts 17, 18 are removed, and a plasticizer, e.g. dibutyl phthalate, applied to the windshield. The structure is then applied to the windshield, plastic 16 to plasticizer, and the assembly heated by infra-red lamps in an evacuated transparent bag. The bus-bars 12 may be of gold or silver, and are on the parallel sides of a trapezium-shaped sheet 10.
Patent GB-577169-A (GB)
Title: Improvements in or relating to the remote control of electric circuits
IPC: G08C19/14
Filed: 1941-04-17
Abstract: 577,169. Electric control systems. CALDWELL, J., PATERSON, S., LORIMER, J., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. April 17, 1941, No. 5012. [Class 40 (i)] An electric control system, e.g., for detonating a charge, comprises means normally not consuming power which on receipt of a control signal brings into action at least two power consuming devices sensitive to different frequencies present in the signal and which jointly effect the desired control. A wireless system utilising a crystal or like detector and frequency selective discharge tube circuits switched on in succession is described. The signal comprises a carrier modulated by three low frequencies and is received by a tuned detonator 2-4. The presence of a signal operates relay 5 (shown as the primary of a transformer) which starts a clockwork switch 7 closing anode circuits 9-11 of three amplifier valves 16-18, and cathode heating circuits 8 for three valves and three gas discharge tubes 28-30 coupled thereto. A delayed action switch 32 closes the anode circuit of the first discharge tube 28. The discharge tubes are normally biased negatively over resistances 22-24 but are started on receipt of the frequencies to which tuned grid circuits 25-27 respectively respond. When tube 28 passes current, anode circuit relay 33 closes the anode circuit of tube 29 which operates in a similar manner as regards tube 30 the anode circuit of which includes the apparatus 35 to be operated on a relay. In a modification the three amplifying valves are replaced by a common amplifier.
Patent GB-163480-A (GB)
Title: Pumps
IPC: F01K9/02
Filed: 1920-02-19
Abstract: 163,480. Lõnge, C. Feb. 19, 1920. Concussion - preventing; single-acting suction-valveless piston pumps; valves, arrangement of.-In an air pump of the Edwards type in which the inlet for air or steam is controlled by the pistcn, the delivery takes place through a slot F in the pumpbarrel controlled by an independent reciprocating member, such as the piston D. In another form, the outlet is controlled by a ported sleeve between the barrel and the piston, and non-return valves are provided in the delivery chamber. A snifting-valve in the delivery chamber prevents noise. The sleeve valve controlling the outlet may be outside the barrel.