baber/WOPTO huggingface dataset:
Patent GB-413671-A (GB)
Title: Improvements in and relating to alternating current power transmission circuits with alternating current or rectified current output
IPC: H02M5/00
Filed: 1932-12-17
Abstract: 413,671. Frequency conversion; transformer systems. FITZGERALD, A. S., 433, Warwick Road, Wynnewood, Pennsylvania, U.S.A. Dec. 17, 1932, No. 35857. Convention date, Dec. 17, 1931. [Classes 38 (ii) and 38 (iv).] Transformation or control of alternating current from a source 1 is effected after increasing the frequency, the frequency being then lowered, for example, to the original one for application to a load 2. Wave distortion is removed by filter circuits operating at the higher frequency and the size of transformers, condensers and inductances is reduced. Preferably, vapour-electric discharge devices 3, 30 are arranged to increase the frequency by modulating each half wave separately according either to the natural frequency of their circuits or to a frequency determined by an external excitation applied to their grids, which excitation may be derived from the source, for example through a frequency-multiplier of the saturating- reactor type or a thermionic beat-frequency oscillator. Rectifiers 4, 40 are employed to demodulate the output of each frequency converter, after transformation or control ; the output of these rectifiers may be arranged to yield alternating or continuous current. Control may be effected by shifting the phase of a voltage applied to the grids of the rectifying means and derived from a separate high frequency source or from the output circuit of the rectifying means. The phase shift may be obtained by any means, but the Specification describes the use of capacity-resistance phaseshifting circuits 15, 150 and of rotating field means. In the form shown, amplitude control is obtained by adjustment of the resistance 24. Specification 347,474 is referred to. The Specification as open to inspection under Sect. 91 describes also the use in place of the resistance 24 of a thermal element such as iron in hydrogen, or a fine tungsten wire winding or ceramic material of high negative temperature coefficient, in a glass vessel and in an inert gas, in association with a controlling direct current ; a material known under the Registered Trade Mark " Thyrite " was also proposed. To vary its temperature direct current might be introduced into this resistance from the anode of a vacuum tube which might be grid controlled ; alternatively, this current might be sent through a heater coil in intimate thermal relation with the resistance. Alternating current, even of radio frequency, might be so used. Time delay might be provided according to the heat retaining characteristics of the thermal device, and an open wire resistance in vacuo was suggested for substantially instantaneous response. Provision was also described for adjustment of the frequency of the converters 3, 30 over a desired range by using a variable speed motor-alternator or a variable-frequency beat-oscillator to excite the grids of these converters. This subjectmatter does not appear in the Specification as accepted.
Patent GB-1072982-A (GB)
Title: A synthetic testing installation for electric circuit breakers
IPC: G01R31/333
Filed: 1964-09-02
Abstract: 1,072,982. Testing circuit breakers. LICENTIA PATENT-VERWALTUNGS G.m.b.H. Sept.2, 1964 [Sept. 2, 1963], No.35908/64. Heading G1U. In an arrangement for examining the behaviour of high voltage power circuit-breakers when opened to interrupt capacitive currents a high alternating current is supplied to the breaker before it is opened and then a high voltage from a high voltage circuit is applied, representing a recovery voltage. The high voltage circuit comprises two oscillatory circuits, the first operating when the breaker contacts are opened shortly before the high current becomes zero, and supplying a capacitive current of small amplitude but high frequency. Before this oscillatory current becomes zero the second oscillatory circuit, tuned to mains frequency is connected up to the first oscillatory circuit as a result of which the transient voltage waveforms which are characteristic of capacitive disconnections appear at the test breaker gap immediately after the oscillatory current has become zero. To test a circuit breaker P, a generator G supplies current to a transformer T, the secondary of which provides a heavy current i k  which is passed through P via an auxiliary breaker H. Shortly before the heavy current i k  falls to zero (i.e. at time t 1 , Fig.2) the breakers P and H are opened. The spark gap F 1  and breaker S 1  are fixed and closed by a control device St 1  operating from a current transformer W 1 . This causes a capacitive current i s  due to the charge stored on the capacitor C s  to flow through the breaker gap and the oscillatory elements R e , L 1  and C e . As this current falls to zero, the spark gap F 2  is fired by the control device St 2  operated from the transformer W 2 , so that at the moment t 2  when i s  becomes zero, the circuit C s  L s  oscillating at the operating frequency is connected, to simulate the expected operating conditions of the breaker.
Patent GB-522733-A (GB)
Title: Improvements in or relating to manually operated reciprocating pumps
IPC: F04B9/14
Filed: 1938-12-12
Abstract: 522,733. Hand-operated reciprocating pumps. HILL, S. D. Dec. 12, 1938, No. 36115. [Class 102 (i)] On a portable handoperated reciprocating pump suitable for fire fighting purposes, a piston rod 13 protrudes from the upper end of a vertical cylinder 11 rigidly secured to a base 5, and is pivotally connected at 23 to an operating lever 24 provided with a movable fulcrum 25 carried by a link 26 which is pivoted at 28 to the cylinder or to the base. The lever 24 and link 26 each comprise a pair of bars, and the former are fitted at one or both ends with transverse operating handles 29 arranged substantially above lugs 6 projecting laterally from the base 5 for engagement by the feet of the operator. A pressure gauge 30 is provided, and the base may have apertures 31 and transverse bars 32 for lifting purposes. An intake union 9 leads into a base portion 7 containing a non-return inlet valve 10, and a piston 12 with a non-return valve 14 slides in the cylinder 11 and is carried by the tubular piston rod 13 which is formed towards its lower end with a plurality of ducts 15. The upper portion of the cylinder 11 communicates by a conduit 19 with the lower portion of a closed chamber formed by a jacket 18 embracing the cylinder 11, and leading to the delivery union 20. The effective swept volume of the upper part of the cylinder'is less than that of the lower part, and a closed chamber 21 is fitted between the intake union 9 and the base plate 7. By this means the pump is double-acting and the delivery of liquid is substantially continuous and constant throughout both strokes.
Patent GB-807779-A (GB)
Title: Improvements in or relating to transparency changers for optical projecting devices
IPC: G03B23/04
Filed: 1956-11-27
Abstract: 807,779. Optical projection apparatus LEITZ, G.m.b.H., E. Nov. 27, 1956 [Nov. 28, 1955], No. 36225/56. Class 97(1) In optical projection apparatus, transparencies are arranged in a tray and are movable one at a time from the tray and back again thereinto by means of a slider actuated by a manually operable plunger, the tray being movable stepwise on successive operations of the slider a distance equal to that between adjacent transparencies and the plunger for operating the slider being movable in a direction perpendicular to the direction of motion of the transparencies caused by the slider. A transparency charger, Fig. 2, an optical projector as in Specification 810,692, has a manually operable plunger 16 with a rack 17 engaging a pinion 18 on the same spindle as a pinion 20 meshing with a rack 12 carrying a member 21 with downwardly extending portions 13 and 14 for engaging the vertical edges of the transparencies. The plunger 16 is lifted to move the slider and the transparency to the projecting position and depressed to move them back again. The rack 17 disengages the wheel 18 as the transparency is returned to the tray and the slider is then locked by a projection 16a on the plunger sliding into a slot 16b of the rack 12. When the plunger is further depressed, a spring 24 at its lower end engages and rotates a toothed wheel 25 engaging a rack on the transparency tray which is moved to. bring the next transparency between the arms 13 and 14. In a modification, Fig. 5, the wheel 25 is locked against rotation by the lever 35, and the rack 27 which is vertically displaceable relative to the plunger 28 permanently engages the wheel 18. On depressing the plunger, a ledge 31 of the rack first engages the arm 32 of the lever 35 to rotate the same and unlock the wheel 25 which is thereupon engaged by the lower end of the plunger as in the former embodiment.
Patent GB-834222-A (GB)
Title: Mounting blocks for electric switches, ceiling roses and like fitments
IPC: H02G3/10
Filed: 1954-12-14
Abstract: 834,222. Bases for couplings. YOUNG, S. G. March 1, 1956 [Dec. 14, 1954], No. 36233/54. Class 38 (1). A synthetic resin mounting block for ceiling-roses, switches &c., may be round or square and comprises an aperture 2 and two pairs of fixing holes 4, 4 and 5, 5 having their centres on diameters of concentric circles of different diameters, the holes 5, 5 being in the form of oval slots. A frangible wall 6 closes (or partially closes) holes 4. (Each hole is surrounded by a raised wall to form a guide.) Knockouts 7 are provided in wall 3 of the block and shoulders 8 form supports for an insulating disc (not shown).
Patent GB-1351499-A (GB)
Title: Electrophotographic copying apparatus
IPC: G03B27/50
Filed: 1968-11-26
Abstract: 1351499 Electro-photography AGFAGEVAERT A G 26 Nov 1968 [27 Nov 1967] 36257/71 Divided out of 1254450 Headings G2A, G2H and G2X A document copying apparatus has an exposure window 12b and a carriage 17 which during the exposure step traverses the window from right to left and which carries a photo-conductive web roll 22, pair of advancing rollers 23/24, corona discharge device 26, knife 39, transparent gate 28, pair of guide rollers 29/30, and deflector hood 31a. The apparatus also comprises an endless belt 32, liquid development chamber 44, drying chamber having an endless belt 48 and infrared heater 52, and outlet 11a. An image of a stationary original 33 is projected strip-bystrip through transparent gate 28 on to the web which is advanced from roll 22 at a speed equal to that of the carriage whereby, after the web passes through the nip of guide rollers 29/30 and is deflected by hood 31a, it comes to rest above moving endless belt 32. When the carriage has completed its traversal the web is cut by the pivoting of a lever 31 carrying knife 39 and the cut sheet is advanced by endless belt 32 to liquid development chamber 44.
Patent GB-760821-A (GB)
Title: Improvements in safety devices for stopping the power drive to machinery when obstruction occurs
Inventor: KENDALL FREDERICK WILLIAM
IPC: G05G15/08
Filed: 1953-12-31
Abstract: 760,821. Control of motors. BROWN & WARD (TOOLS), Ltd. Dec. 22, 1954 [Dec. 31, 1953], No. 36282/53. Class 38(3) [Also in Group XXIV] In a safety device for stopping the power drive to machinery in the event of obstruction, a power-transmitting link or rack A is formed of two relatively slidable parts 4, 5 which are held together by a spring and normally act as a single unit, but if abnormal resistance is encountered the spring allows the parts 4, 5 to move apart and consequently a switch 7 carried by the part 5 is actuated by a plate 9 on the part 4 to stop the driving electric motor. As shown the rack A is actuated by a cam-driven sector 1 and drives a machine shaft 3.
Patent GB-916851-A (GB)
Title: Improvements in and relating to disc brakes
IPC: F16D55/2255
Filed: 1960-10-24
Abstract: 916,851. Disc brakes. PORSCHE, F. A. E. Oct. 24, 1960 [Nov. 13, 1959], No. 36372/60. Class 103 (1). In a disc brake for vehicles comprising a calliper housing surrounding a portion of a periphery of the brake disc including hydraulic brake-actuating means 7, the calliper housing is mounted on a leaf-spring 19 secured to a bracket member 14 mounted on stationary axial spindle 1. Upon actuation of the brake, fluid is introduced into cylindrical space 8 and piston 7 presses the friction pad 11 into frictional engagement with the brake disc 5 and deflection of the leaf-spring 19 causes calliper housing 6 to be deflected to force fixed pad 13 against the brake disc. The brake disc 5 is attached at its outer periphery 3 rim flange 4 of a carrier 2 to which is secured the wheel 3. Adjustment for wear of friction pads 11, 13 is achieved by the provision of an adjustment screw 26 for adjusting the leaf-spring relative to the bracket member 14.
Patent GB-453934-A (GB)
Title: Improvements in the manufacture of threads and fabrics made with filaments of cellulose esters or ethers
Filed: 1934-12-21
Abstract: Threads of cellulose ester or ether filaments ready for fabric-forming operations, are subjected to the action of heat and, while hot, are given a twist insufficient to impart any cr<\>zeping power to the threads.  The threads may be <PICT:0453934/IV/1> steamed and, as shown in the Figure, the threads are drawn off rotary packages 11, through guides 13, through a steam pipe 16 by way of eyes 14 and are wound up on bobbins 15; instead of eyes 14 the steam pipe may be provided with slits and the pipe may be adjusted in relation to the eyes 13.  Specifications 437,019, 438,589, and 438,590, [all in Group IX], are referred to.
Patent GB-1099339-A (GB)
Title: Mixing tap
IPC: F16K11/074
Filed: 1966-08-16
Abstract: 1,099,339. Valves. B. GENIN. Aug. 16, 1966 [Nov. 10, 1965], No. 36669/66. Heading F2V. A mining tap has cold and hot water inlet pipes 28, 27 and an outlet pipe 26. The pipe 27 leads to ports 21, 22A, 22B, the pipe 28 to ports 23, 24A, 24B and the pipe 26 leads to a central port 20. Two valve discs 14, 29 have central passages 15, 30 and outer passages 16, 17 and 31, 32 respectively. The discs have polished contacting surfaces and the passages 16, 32 are on opposite sides of the lines through the centres of passages 17, 15 and 31, 30, these lines preferably being tangential to the periphery of passages 16, 32. The disc 14 is fixed in the housing so that passages 16, 17 register with ports 21, 23 while the disc 29 is carried by a member 35 rotatable in the housing the arrangement of the passages provides that on rotation the passages 17, 31 move from complete registery out of registry while the passages move from out of registry into registry.
Patent GB-1511317-A (GB)
Title: Crystal-controlled oscillators
IPC: H03B5/32
Filed: 1975-09-05
Abstract: 1511317 Piezoelectric oscillator circuit COMPAGNIE D'ELECTRONIQUE ET DE PIEZOELECTRICITE 5 Sept 1975 [6 Sept 1974] 36765/75 Heading H3F In a piezoelectric crystal controlled oscillator comprising a loop closed via an amplifier (Fig. 1, not shown) a voltage controlled reactance in the loop, e.g. a varicap, is varied by a compensating signal to stabilize the frequency against temperature variation, the compensating signal being supplied by a circuit with a first terminal 7 connected to a first voltage divider R 11 , R 13  providing a reference potential, and a second terminal 8 connected to two temperature sensitive elements RT1, RT2, e.g. thermistors, each leading to a respective potential divider R1, R2 and R7, R8, etc., the latter itself comprising a third temperature sensitive element RT3: all three dividers being connected across a power supply shown as + V and earth. With an AT cut crystal, the required signal is a cubic curve, see Fig. 2, the arcs I, II, III of which are provided by the three thermistors RT1, RT2, RT3 respectively. The fixed resistors are selected so that each thermistor has negligible shunting effect at the low temperature end of its range, while at the upper end its shunt resistor has negligible effect. To avoid shunting of the varicap, resistors R 10 , R 11  are made much higher in value than the components of the circuit. The reference potential on terminal 7, adjusted by divider R 12 , R 13 , controls the oscillator frequency: R 12 , R 13  may be zener diodes.
Patent GB-833418-A (GB)
Title: Improvements in or relating to liquid distributing systems
IPC: F02C7/228
Filed: 1958-11-17
Abstract: 833,418. Gas turbines; rotary pumps and motors. WESTINGHOUSE ELECTRIC CORPORATION. Nov. 17, 1958 [Nov. 20, 1957], No. 36881/58. Classes 110 (2) and 110 (3). A liquid-distributing system for supplying fuel to an engine, such as a gas turbine, comprises a manifold 20, fed by a pump 21 through a control 22, a number of rotary pumps 24 each coupled to a number of rotary motors 25 which are driven by the liquid supply, the exhausts 34 of the motors passing to jets 18 of a combustion chamber 12. The pumps are supplied by a pipe 40 and each pump outlet 30 is connected by a pipe 39 to the next pump inlet, the last pump outlet being coupled to a regulating valve 42 by a pipe 43. A pressure drop is effected across each of the motors 25 and converted to a pressure rise across the associated pump element 24. Accordingly, the sum of the pressure rises of the pumps is transmitted to the valve 42, which regulates the total pressure rise in the liquid circuit. The motors and pumps are of the outwardly-sliding vane-types, Fig. 3 (not shown). The valve 42 regulates flow of liquid between pipes 52 and 43 in accordance with upper and lower pressures on piston surfaces 45, 46 and a spring 47. Fig. 4 shows a modified fuel distributing system having a by-pass 55 across the main supply pump 21 and controlled by a regulating valve 56. A fuel-control valve 60 is interposed between ducts 43, 52 for regulating the cumulative pressure rise of the pump elements 24, and accordingly the pressure drop across the motor elements 25. A hollow cylindrical member 62 rotates, being driven by the main engine shaft 14, and regulates the flow to or from pipes 43, 52 in accordance with the position of a throttle lever 69 and the downward movement of the valve 65, regulated by centrifugal weights 72 and a spring 68.
Patent GB-1105241-A (GB)
Title: Improvements in or relating to data handling apparatus
Inventor: THREADGOLD RONALD
IPC: G06F9/22
Filed: 1963-09-20
Abstract: 1,105,241. Digital computers. AUTOMATIC TELEPHONE & ELECTRIC CO. Ltd. 4 Sept., 1964 [20 Sept., 1963], No. 37141/63. Heading G4A. Control signals for the execution of computer micro-orders are passed successively to the appropriate circuits and gates, each signal being derived from the " operation completed " signal of the previous micro-order. The programme order sets up the appropriate path for the micro-order signals, which then asynchronously activate the required logic and arithmetic in turn without further reference to the control unit. The arrangement is described with reference to a parallel addition operation.
Patent GB-1393139-A (GB)
Title: Rotary actuator
IPC: F15B15/10
Filed: 1972-08-09
Abstract: 1393139 Rotary actuators GREER HYDRAULIC Inc 9 Aug 1972 [5 May 1972] 37186/72 Heading F1F In a valve actuator a vane 73 fixed to a hub 31 of an output shaft 35 is displaced to, or held in, the desired position within a cavity 33 by fluid pressure applied to bladders 83, 84 through ports 117, the bladders being pre-charged with e.g. oil, to bring. them into contact with the vane's dished ends 76, 77. The wall thickness of the lower portion 88 of each bladder varies, Fig. 10 (not shown), to withstand abrasion and ensure that said portion bends in accordance with the curvature of the cavity 33 when the bladder is distended. One of the bladders may be precharged with gas through a valve lodged in the respective port, Fig. 5A (not shown), so as to act as a spring. The vane may be made of nylon filled with molybdenum disulphide and the bladders may be made of rubber. The hub 31 is lubricated through grooves 59 and a bore containing a removable plug (64), Fig. 6 (not shown). A detent 49 and screws (53), Figs. 1, 2 and 6 (not shown), limit the angular displacement of the vane and shaft. A hub 54 can be attached to the valve casing. Washers 36 act as thrust bearings.
Patent GB-1313935-A (GB)
Title: Pressure measuring transducer
IPC: G01L9/04
Filed: 1970-07-31
Abstract: 1313935 Measuring pressure electrically BENDIX CORP 31 July 1970 [4 Aug 1969] 37210/70 Heading G1N Pressure variations in a tube 32 Fig. 1, are measured by a transducer comprising two arms 12, 14 hinged at 30, which hold the tube between V-shaped ends 16, 22 locked in position by bolt 38 and nut 40, the elastic deformation of arm 12 being sensed by strain gauge resistors 41, 42 connected in a bridge circuit, whereby the effect of acceleration in direction other than 45 is automatically eliminated. One or four strain gauges may be used.
Patent GB-447511-A (GB)
Title: Improved couplings for connecting substantially aligned shafts
IPC: F16D3/68
Filed: 1934-12-29
Abstract: 447,511. Universal joints. RICEFIELD, L., 154, N. Humphrey Avenue, Oak Park, Illinois, U.S.A. Dec. 29, 1934, No. 37284. [Class 80 (ii)] Resilient rubber, leather, or other blocks 15, arranged between interengaging axial projections 10c, 11c on shaft-members 10, 11, are detachably secured, outside their powertransmitting portions, to a retaining-ring 16a. As shown, the ring floats and is in two channelshaped parts, held together by bolts 17 and engaging grooves 15d in the blocks. In a modification, the blocks carry spring-clips which snap over a one-piece ring, which may float or be attached to, or integral with a shaft-member.
Patent GB-1113528-A (GB)
Title: Improvements in or relating to installations for removing from the atmosphere exhaust gases produced by vehicles powered by internal combustion engines
IPC: E01C1/00
Filed: 1965-09-02
Abstract: 1,113,528. Ventilating roads. G. A. MESSEN-JASCHIN. 2 Sept., 1965 [3 Sept., 1964; 14 April, 1965], No. 37463/65. Heading F4V. Vehicle exhaust gases are drawn from a road surface through openings 17 in kerbs 15 and passed through electrofilters 20 to remove condensed hydrocarbons. The resultant gases may be passed into pavement gutter (27), Figs. 4-7 (not shown), through a pipe (35) to discharge above rooftop level, Fig. 8 (not shown), or into a sewer (38), Fig. 9 (not shown). Combustion chambers (21), Figs. 4-7 (not shown), may be provided downstream of the filters to burn carbon monoxide and the resultant hot gases may be passed beneath the road surface for heating purposes, Figs. 6 & 7 (not shown).
Patent GB-983585-A (GB)
Title: A process for the recovery of sulphur dioxide contained in industrial gases of whatever concentration
IPC: C01C1/247
Filed: 1961-10-19
Abstract: Sulphur dioxide in industrial gases is recovered in the form of ammonium sulphate by feeding an organic base of basicity lower than ammonia into the stream of sulphur dioxide-containing gas and introducing air or oxygen if necessary to make oxygen available, whereby the sulphur dioxide is converted into the sulphate of the organic base, recovering the sulphate and decomposing it with ammonia to produce ammonium sulphate.  The organic base is recovered and recycled.  Suitable bases are pyridine, quinoline and their homologues and certain alkylanilines and ethanolamines. They are introduced in the form of a mist. The sulphate may be recovered by dry or wet collectors; in the former case, the dry sulphate is extracted with an aqueous solvent, e.g. a solution of ammonium sulphate; in the latter case, the liquid used may be ammonium sulphate which is later treated with ammonia to decompose the sulphate of the base.
Patent GB-1508949-A (GB)
Title: Antibiotics mimosamycin chlorocarcin a chlorocarcin b and chlorocarcin c and a process for their production
IPC: A61K35/66
Filed: 1976-09-10
Abstract: The antibiotics mimosamycin and chlorcarcins A, B and C, as well as their acid addition salts, are obtained by cultivation of Streptomyces lavendulae strain No. 314 (NRRL 11002) and subsequent separation and isolation from the culture broth. Mimosamycin has antibacterial properties on Gram-positive bacteria, whereas chlorcarcins A, B and C have an antitumour action.