baber/WOPTO huggingface dataset:
Patent GB-638649-A (GB)
Title: Improvements in or relating to an audiometer
IPC: H03B5/10
Filed: 1947-09-26
Abstract: 638,649. Testing hearing. PATENT MANAGEMENT, Inc. Sept. 26, 1947, No. 26131. Convention date, Dec. 9, 1946. [Class 81(ii)] An audiometer comprises a sound generator feeding different pre-determined frequencies into particular points along a series of resistors forming an attenuator, and shunted at various points along its length, and a switch tapping various points along the attenuator for feeding a controlled output to a receiver. The generator comprises an oscillator valve 10 having an anode tuning circuit consisting of a condenser 33 and the lower part of the inductance 15, the upper part of which forms the feed back coil, and the frequency of oscillation is determined by the tapping switch 31. This is ganged to the moving arm of a switch 61 which feeds the output, according to its frequency, to selected points along a series of resistors forming an attenuator 40. The intensity of the output is selected by a tapping contact 56 which feeds through an amplifier 82 to either an earpiece D or a bone conduction receiver E. according to the setting of a switch 103. This switch is ganged to a similar switch 64 which, when the bone conduction receiver is in use, switches the generator output to a second switch 61x from which it is connected to points lower down the attenuator owing to the lower intensity required for this instrument. Each output connection from a switch 58, 58x includes an appropriate equalizer resistance 69 to compensate for variations in generator amplitude at different frequencies. The attenuator resistors and shunting resistors 79a, 79b, 79c are so proportioned that the tappings 53 may be regularly calibrated in decibels with reference to the threshold of hearing.
Patent GB-535775-A (GB)
Title: Improvements in or relating to mechanical torque converters
IPC: F16H33/04
Filed: 1939-09-19
Abstract: 535,775. Variable-speed gearing. PARKINSON, A. R. Sept. 19, 1939, No. 26196. [Class 80 (ii)] In a variable speed gear levers 1 pivoted at 16 to the driving member are forced outwardly by centrifugal force or by springs 12a and are connected by cranks 3, 1a, to rollers 4, 5, which run in a cam groove 6, 7, in the driven member 9. The cam groove 6, 7 is of uniform sinuous or wavy form lying concentrically around the axis of rotation. The pivots 16 may be each supported by a leaf spring carried by the driver ..and the position thereof may be varied by hydraulic pistons and cylinders 18, 17. Hydraulic fluid may be supplied by a pump 21 at high pressure to the outer ends of the cylinders and at low pressure to the inner ends of the cylinders. When the pistons reach a certain position in their stroke the fluid is permitted to leak away under control of a valve. A separate valve may be provided for each cylinder or, as shown, one valve 22 may be common to all cylinders. The valve 22 is controlled by a centrifugal governor 25 which moves the valve axially or by manual means which moves the governor 25 bodily axially or by manual means which moves the governor 25 bodily axially on its spindle. The valve 22 may be rotated through a small angle by a sliding rod 26 carrying a fork 27, the rod carrying another fork engaging a sleeve 28, Fig. 1.
Patent GB-364650-A (GB)
Title: Improvements in devices for use with cups and saucers, and adapted for advertising purposes
IPC: G09F23/06
Filed: 1930-09-03
Abstract: 364,650. Advertising on absorbent mats. SYMONDS, P. R., Camp, Stroud, Gloucestershire. Sept. 3, 1930, No. 26340. [Class 3 (ii).] A disc 4 carrying advertising matter is adapted to fit in the central depression of a saucer 3, and is also used to absorb any small overflow from the cup. The disc may be suitably shaped by stamping, pressing, &c., or may be made sufficiently flexible to take up the desired contour when the cup is rested on it, radial slots which extend from the centre of the disc almost to the periphery being provided to prevent it from buckling. In a further modification, two discs are attached together concentrically, the upper one carrying the advertising matter and the lower and smaller one engaging the circular depression in the saucer and centralizing the device. The device need not be circular, but may be suitably shaped in accordance with the advertisement.
Patent GB-1352573-A (GB)
Title: Mechanical relaxion spectrometer and method of measuring tor sional modulus
IPC: G01N11/16
Filed: 1971-04-19
Abstract: 1352573 Measuring torsional modulus electrically MUANYAGIPARI KUTATO INTEZET 19 April 1971 [6 April 1970] 26383/71 Heading G1N A sample of a material m, e. g. plastic or rubber, is secured against rotation at one end and connected at the other to the rotor of a phasesensitive Selsyn-type motor M, which is energized by A. C. sources G1 and G2 of different frequency. The material is subjected to a torque at the difference frequency and the resulting motor current in a resistor Ro is a measure of the torsional modulus of the material. The voltage across the resistor is analyzed at quadrature related phases by a phase analyzer FA to produce representations respectively of the loss modulus and storage modulus. The material is housed in a flowing gas (nitrogen) chamber T which is heated by an element e. The temperature is varied linearly over a range under the control of a programme unit HP. The temperature is measured by copper-constantan thermocouples z. An X-Y recorder ZI has its X-axis controlled as a function of temperature and its Y-axis controlled by the output of the phase analyzer KA. Whereby there is produced a trace of the variation of torsional modulus with temperature. The apparatus may be arranged to produce traces of either or both of the quadrature related components of the motor current in resistor Ro. In order to eliminate measurement errors due to bearing friction in motor M1, a second motor M2, whose rotor is not loaded, is also energized from sources G1 and G2 and the circuit is arranged so that the difference of the motor currents flows in resistor Ro. When motor M1 is unloaded, the phase of the current in Ro constitutes the reference phase to which, phase analyzer FA is adjusted to furnish the loss modulus measurement. The quadrature phase then provides the storage modulus. Figs. 2-7, (not shown), give examples of measurement made over the temperature range -150 to +150C at a torsional frequency of 8Hz obtained by a source G1 of 50 Hz and a source G2, which is adjustable over the range 50-100 Hz, set at 58 Hz.
Patent GB-1316184-A (GB)
Title: Gas turbine installation
IPC: F02C9/00
Filed: 1971-04-19
Abstract: 1316184 Gas turbine plant NETHERLANDS APPLIED SCIENTIFIC RESEARCH FOR INDUSTRY TRADE & COMMERCE 19 April 1971 [7 April 1970] 26461/71 Headings F1C F1G and F1T The invention relates to a turbine intallation comprising a gas turbine plant which utilizes a centrifugal fluid vane type compressor, the gas turbine driving a fluid pump which supplies fluid to drive a fluid turbine which supplies useful power, the fluid discharging from the turbine passing to the centrifugal fluid vane type compressor to drive it and to constitute the fluid for the fluid vanes. In Fig.2 air is compressed in compressor 27 then further compressed in the centrifugal fluid vane type compressor 31. The air is then pre-heated in air pre-heater 36 before passing to combustion chamber 37 where fuel is burned in it, the resulting combustion gases passing to the turbine 26 and finally passing to exhaust through the air pre-heater 36. The turbine 26 drives the first compressor 27 through shaft 25, also a fluid pump 28. Fluid supplied by the pump 28 passes through line 32 to drive a fluid turbine 33 which supplies useful power at shaft 45. Fluid discharging from the turbine 33 passes through line 34 to the centrifugal fluid vane type compressor acting to drive the compressor also constituting the fluid for the fluid vanes. The fluid and air are separated in the separator 42, the air passing through line 35 to the pre-heater 36 and the fluid returning through cooler 44 to the pump 28. The assembly shown in Fig. 3 comprises an air compressor 49 shown as a centrifugal type compressor, a centrifugal fluid vane type compressor comprising a rotor 53 and an annular space 64 in which the fluid vanes are formed, the air compressed therein passing to an air pre-heater and combustion chamber not shown, the combustion gases acting to drive the turbine 48. The turbine 48 drives the compressor 49 also a fluid pump 50, the fluid delivered by the pump passing to the fluid turbine 57 which supplies useful power, the fluid discharged from the turbine 57 passing to the centrifugal fluid vane type compressor 53 to drive this , the fluid then passing through passage 63 in the rotor to constitute the fluid vanes in the annular space 64. A control sleeve 65 is provided to regulate the quantity of fluid passing into the fluid vane type compressor.
Patent GB-945289-A (GB)
Title: Improvements in or relating to multi-spindle lathe control means
IPC: B23Q16/04
Filed: 1962-07-10
Abstract: 945,289. Lathe details. ZAVODY PRESNEHO STROJIRENSTVI GOTTWALDOV NARODNI PODNIK. July 10, 1962 [July 10, 1961], No. 26463/62. Heading B3T. A device for limiting the over-run and resulting impact upon rotation of the spindle drum 1 of a multi-spindle lathe, comprises a dog 9 pivotable in a body 6 which is pivoted towards the drum about a pin 7, by a piston 4, and retracted by a spring 35. The longer arm of dog 9 bears against a spring-loaded piston 11, and the shorter arm retains drum 1 by resting against a trip 12 on the drum. Body 6 in its operative position rests against a stop 28, and dog 9 urges the trip 12, after indexing of drum 1, against a spring-urged pawl 30. The spring loading of piston 11 can be produced by a rubber sleeve 13, or a number of spring discs, or by fluid pressure.
Patent GB-1377886-A (GB)
Title: 1,2,4-oxadiazole derivatives
IPC: C07D271/07
Filed: 1973-06-04
Abstract: 1377886 5 - Acyl - 2 - amino - 1,2,4 - oxadiazole derivatives GRUPPO LEPETIT SpA 4 June 1973 [4 July 1972] 26469/73 Heading C2C Novel compounds of Formula I wherein R is C 1-6  alkyl, C 3-6  cycloalkyl or aryl, R 1  is H or acyl and X is O, optionally substituted hydrazono, optionally substituted oximino or is H and OH, are prepared by one of the following methods; (a) a compound of Formula II is nitrosated then heated to give compounds wherein X is O which may be converted by known methods into the other values of X, or (b) heating a compound of Formula V in alkaline media and halogenating the resulting compound of Formula VI with PCl 5  and reacting the product with ammonia. Intermediates of Formula II above are prepared by known methods. Pharmaceutical compositions having tranquillizing -activity comprise an above novel compound and a carrier therefor.
Patent GB-1394101-A (GB)
Title: Interpreting systems for coded records
IPC: G06K7/10
Filed: 1972-06-07
Abstract: 1394101 Bar code reader and decoder MONARCH MARKING SYSTEMS Inc 7 June 1972 [29 June 1971 (2)] 26626/72 Heading G4M  Labels having bar code marking of two different characteristics each of two different widths are read by, e.g. a hand held reader which derives an indication of a reference width, e.g. an average width. The coding used has three black bars and two white bars per character and a record commences with a start character and ceases with a stop character. Signals from, e.g. a light pen are used to provide pulses at each transition from white/black to black/white and an inhibit signal lasting for five clock pulses is provided to allow time for comparison operations. Successive signals indicating black or white bars enable clock pulse inputs to counters BAR1-3 and SPACE 1-3 so that counts representing the widths of the five bars of the character are stored in five of the counters. When the first black bar is read the clock pulses are passed through a divide by 5 circuit and fed to counter COMP REGISTER 2. When the second black bar is read the divided clock pulses are fed to COMP REGISTER 3. Initially a START or a reverse STOP character is looked for and the counts in BAR 1, 2, 3 SPACE 1, 2 are compared with the average value in COMP REGISTER 2 and similarly for COMP REGISTER 3 until a correct character comparison is achieved. The counts are then restricted to BAR 1, 2, 3 SPACE 1, 2 and COMP REGISTER 1. Comparison indicates either a "1" or "0" if the bar or space is wider or less than the average and the bits are stored in shift register 44. A control circuit receiving signals from the reader controls the connections between the counter and the comparator and steers the clock pulses to the required counters. The bits in each character may be checked for parity. Circuits producing control signals are illustrated (Figs. 4, 5, not shown). Decoder b.c.d. sginals are stored in register 338 from where they may be fed to a display or output device 52. The circuits may contain counter overflow detectors for preventing incorrect reading. The bars may be coloured or magnetic and only the bars or only the spaces may be modulated in width.
Patent GB-616487-A (GB)
Title: Improvements in or relating to electron emission filaments
IPC: H01J19/00
Filed: 1946-09-06
Abstract: 616,487. Cathode materials and processing. STANDARD TELEPHONES & CABLES, Ltd., and WOLFSON. H. Sept. 6, 1946, No. 26832. [Class 39 (i)] A method of manufacture of a cathode comprises coating the cathode with a mixture of tungsten carbide with thorium or with a material which when heated with the carbide yields thorium, and sintering the mixture. The material may be thorium, thoria or thorium hydroxide and may be applied with the tungsten carbide by electrophoresis; the mixture may be temporarily bonded by means of a binding agent such as nitrocellulose or methyl methacrylate. After the cathode has been coated it may be assembled in an electron discharge device and heated in vacuo at low temperature to drive off the binding agent; it is then heated at a high temperature to sinter the layer on to the cathode. The core may be of pure tungsten. The thorium content of the carbide layer may be 5 to 10 per cent, or more.
Patent GB-1037731-A (GB)
Title: Improvements in or relating to electrical circuits
Inventor: SALAM HASSAN PADDY ABDEL
IPC: G06F7/50
Filed: 1961-07-25
Abstract: 1,037,731. Tunnel diode bi-stable circuits. ENGLISH ELECTRIC-LEO-MARCONI COMPUTERS Ltd. July 25, 1962 [July 25, 1961], No. 26880/61. Heading H3T. [Also in Division G4] A carry propagation circuit for one stage of a parallel binary adder comprises a tunnel diode TD which when bias current I B  is equal to I<SP>11</SP> is switched between its high and low voltage states by the carry input signal at CI to provide carry output signal CO. This condition exists when neither D1 nor D2 are conductive, i.e. when neither of the AND gates TG1, TG2 and TG3, TG4 are operative. When addend and augend bits are different this condition applies; when they are both zero TG3, TG4 is operative to divert some of I<SP>11</SP> via D1 and reduce I B  to maintain the carry output at zero whatever CI. When addend and augend are both one, D2 is conductive to increase I B  and maintain TD in its high voltage state whatever CI.
Patent GB-660811-A (GB)
Title: Improvements in or relating to ladders, step-ladders and the like
IPC: E06C1/32
Filed: 1948-10-16
Abstract: 660,811. Ladders. WHITELEY, F. Sept. 30, 1949 [Oct. 16, 1948], No. 26952/48. Class 20(ii) A convertible extension and step ladder comprises ladder sections 1, 2, brackets 6 carrying a retaining bar 7 being secured to the upper end of the section 1 and are formed with rightangled slots 9 adapted to receive in the step ladder position, pins 10 secured at the upper end of the ladder section 2 which is provided , with hooks 8 at its lower end to engage any of the rungs 4 of the section 1 when used in the extended position. The side members 3 of the section 1 are splayed outwardly at the lower end and the sides and rungs of the sections may be formed of channel-sectioned aluminium, the rungs having renewable wooden inserts. Alternatively the rungs may be formed of serrated tubing.
Patent GB-1033603-A (GB)
Title: Improvements in rock drilling equipment
IPC: E21B10/66
Filed: 1963-07-08
Abstract: 1,033,603. Boring earth &c. ATLAS COPCO A.B. July 8, 1963 [July 9, 1962], No. 26975/63. Heading E1F. Apparatus for making a hole for casing comprises a drill rod, a bit at one end of the rod and adapted for passage through the casing, means for transmitting rotary energy to the rod, means for feeding the casing into the hole, and means for guiding the bit eccentrically of the casing to drill the hole which has a slightly larger diameter than that of the casing. The bit 5 may be of the roller, diamond or hard metal insert type, and its drive may be rotary or rotary and percussive. In the rotary percussive apparatus as shown in Figs. 1, 3, the drive adapter 1 strikes a bush 25 fixed to the top of the casing 6 to feed the casing. A swivel 26 having a flushing medium inlet or outlet 27 is connected to the bush 25 by a pawl 31 which prevents rotation of the casing. The bit guiding means comprises a rotary bush 9 which rotates with an eccentric 13 on the drill rod 4 during drilling. The bush 9 has a recess for flushing medium and the rod has a flushing passage 15. In a modification (Figs. 7, 8, not shown), the guide bush has a concentric circular aperture which co-operates with a cylindrical eccentric on the rod. In a further modification (Figs. 11, 12, not shown), the casing 50 rotates with the bit 53, the hexagonal drill rod 52 engaging an hexagonal aperture in a split bush 56, 57 at the top of the casing and a projection 55 on the rod striking the bush. The casing opposite the guiding means 66 is cut away at 51.
Patent GB-1242383-A (GB)
Title: Improvements in bookbinding
Inventor: RUSLING ANTONY REGINALD
IPC: B42D1/04
Filed: 1967-06-12
Abstract: 1,242,383. Protective covers. POLYWELD PLASTIC CO. Ltd. 6 Aug., 1968 [12 June, 1967], No. 26987/67. Heading B6A. A paperback book such as a telephone directory 5 is bound in a protective jacket, formed by outer covers 1, 2 and a rigid spine 3, by passing self-tapping screws 6 through openings 4 in the spine 3 and screwing them into the spine of the directory 5. The protective jacket is made by enclosing three panels of a stiff board between a pair of synthetic thermoplastic sheets whose edges are heat sealed together.
Patent GB-208609-A (GB)
Title: Improvements in and relating to devices for cleaning or polishing windows, mirrors and like surfaces
IPC: A47L1/09
Filed: 1922-10-05
Abstract: 208,609. Dennys, A. V. L. Oct. 5, 1922. Pivoted handles with clamping devices for mops and the like.- A device for cleaning and polishing windows and other vertical, horizontal &c. surfaces comprises an arm b carrying at either end a freely pivoted pad &c. a and near the other end having an integral enlarged sector b<1>, at the centre of which a handle member c is pivoted at c<1>. The handle, c is preferably in the form of two slats having a distance piece c<2> at one end and between which the arm b is pivoted and into which it may be folded to form a short device as shown in Fig. 4. A pad a<3> may be pivobed on the end b<3>. The angle of the arm b with the handle c may be varied and adjusted by a pin d passed through holes in the handle c and sector b<1>. As a modification the sector b<1> may be replaced by sectors or enlargements on the ends of the slats.
Patent GB-790259-A (GB)
Title: Means for regulating chimney-action on solid fuel stoves or grates
Inventor: PROTHERO DAVID RHYS
IPC: F23L17/00
Filed: 1955-09-21
Abstract: 790,259. Chimney throats. RADIATION, Ltd. Aug. 23, 1956 [Sept. 21, 1955], No. 26997/55. Class 126 [Also in Group X] The draught through a chimney is regulable by a tapering throat formed of superimposed sections h. In a building of multi-storied flats, the number of sections diminishes from the base of the chimney upwards.
Patent GB-519125-A (GB)
Title: Improvements in or relating to electric rectifier arrangements
IPC: H02M7/08
Filed: 1938-09-15
Abstract: 519,125. Rectifying alternatingcurrent. PATENTVERWERTUNGS - GES. HERMES. Sept. 15, 1938, No. 26999. Convention date, Sept. 15, 1937. [Class 38 (ii)] In a rectifying arrangement for supplying low voltage heavy current t loads such as electrolytic baths an'd comprising a number of dry metal compound rectifier units 1, 2 in parallel, a separate transformer 3 4 is provided for each unit and is connected thereto through short leads. Tappings are provided in the primary side of each transformer for fine adjustment of votage, and equalization of load is further facilitated by the provision of valves 7 for individually controlling the air cooling of each rectifier. The secondary windings of the transformers may be divided into two threephase groups interconnected by an interphase transformer. Alternatively, where groups of three single-phase transformers are employed for six-phase working, a similar increase in the conducting period of each rectifier element may be effected by providing each transformer with two secondaries in the form of straight bars 9, 10, Fig. 3,. each forming one. phase of a six-phase system.
Patent GB-227231-A (GB)
Title: Improvements in or relating to gas turbines
IPC: F02C1/00
Filed: 1923-10-30
Abstract: 227,231. K÷hler, F. Oct. 30, 1923. Working-fluid supply.-In a turbine of the type in which a runner is divided into cells from which liquid is forced by internally produced combustion gases to drive the wheel, the recesses of the cell walls through which the gases are introduced or escape are so arranged that they are covered by liquid during the compression of the gas. In the construction shown in Fig. 1, two rotors 2, 3 mounted coaxially are divided into cells by vanelike partitions. Channels 8 are arranged at intervals in the casing between the rotors so as to connect the cells in pairs not in the same plane. The ends of the casing have openings 9, 9', Figs. 1 and 2, for the introduction of explosive mixture and of scavenging air. The central part of the casing has outlet ports 10 communicating with the exhaust through passages 13. Hot tube igniters 114 are arranged in ignition rings 113 and communicate with the, cells by passages 115. Liquid leaking past packing-rings 109 is received in an annular chamber 111 from which it is returned to the cells by passages 112 situated at a point where the pressure in the cells is low. An inlet 130 is connected to a liquid supply for replacing heated liquid by cold, any excess passing into the, exhaust. At the moment of explosion the liquid is as shown on the, right-hand side of Fig. 1, at such a level that it covers the inlet and outlet gaps in the cells covered by the parts 15<1>, 15 of the casing. At this moment a charge is forced into the corresponding cell in the opposite rotor, and as the cell moves away from the inlet this is compressed by the moving liquid till it reaches the explosion point. After the exploded and expanded gases have passed out through an outlet 10, a scavenging charge is forced in through a port 9<1> just before the combustible charge enters through a port 9. In a modification a single rotor is employed, the cells of which are connected by pasages 205 - - 208 in a surrounding casing.