baber/WOPTO huggingface dataset:
Patent GB-518985-A (GB)
Title: Improvements in or relating to the manufacture of benzidine
Filed: 1938-09-12
Abstract: 518,985. Catalytic reduction of nitro compounds. DU PONT DE NEMOURS & CO., E. I. Sept. 12, 1938, No. 26635. Convention date, Sept. 11, 1937. [Class 1 (i)] [Also in Group IV] Nitrobenzene is reduced with'hydrogen in the presence of a nickel catalyst in an aqueous alkaline medium at a temperature above 125‹C. and under a superatmospheric pressure not exceeding 300 lb. per sq. in. A mixture of aniline and other reduction products is obtained. The alkaline substance added may be caustic soda or potash, trisodium phosphate, sodium carbonate or sodium silicate, and it may be added in portions during the reduction. The separation of the aniline from the other reduction products may be effected by vacuum distillation, or alternatively the mixed reduction products may be treated with dilute hydrochloric acid in an amount sufficient merely to convert the aniline into aniline hydrochloride, which is then separated.
Patent GB-1426926-A (GB)
Title: Analysis utilizing neutron irradiation
IPC: G01V5/04
Filed: 1973-06-05
Abstract: 1426926 Analyzing materials by neutron irradiation COMMONWEALTH SCIENTIFIC & INDUSTRIAL RESEARCH ORGANIZATION 5 June 1973 [9 June 1972] 26675/73 Heading G1A In apparatus for measuring the concentration of water and a specific component in a material, a source of neutrons is provided for irradiating the material, a neutron detector being positioned to monitor the number of neutrons scattered per unit time by the material at the time of irradiation, and a gamma ray detector being provided and designed to produce an output signal indicative of the number of gamma rays received per unit time from the irradiated material which have an energy within a predetermined energy range characteristic of the decay of an excited nucleus of the specific component, the measured number of neutrons and gamma rays then being correlated with known values of specific component and water concentration. As shown in Fig. 1, the material 5, e.g. iron ore, is situated on a conveyer and is irradiated by a soft neutron source 2, e.g. a californium source, which may be pulsed, the neutrons being detected by a detector 6 and the gamma rays by a detector 7. The depth of material is also detected by a gauge 8, whose output is applied to a ratemeter  12. The outputs of the detectors 6, 7 are also applied, after suitable processing to ratemeters 10, 11. The outputs of the three ratemeters provide signals representative of the neutron flux, gamma ray flux and depth these outputs being applied as shown to adders 14, 15 suitably programmed to provide outputs representing the changes in iron and water concentration from predetermined values. The concentration of a second component, e.g. aluminium, may be determined using a gamma ray detector 9, a ratemeter 13 and an adder 16. The ratemeters may be replaced by multi-channel analyzers or digital counters, the adders being replaced by digital calculators. If the mass of ore on the conveyer is constant, the measurement of the neutron and gamma ray counting rates can be correlated on a calibration graph, Fig. 3, (not shown). As shown in Fig. 2, the neutron source 27, the neutron detector 25 and the gamma ray detector 24 are arranged on a barehole logging tool 20. In this case, the density of the formations surrounding the borehole and the radius of the borehole have to be taken into consideration. The tool can continuously scan the borehole or be stopped to make a measurement.
Patent GB-745416-A (GB)
Title: Improvements in or relating to apparatus for detecting the presence or absence of a conducting or magnetic object
IPC: G01V3/10
Filed: 1953-09-29
Abstract: 745,416. Electric tests. GENERAL ELECTRIC CO., Ltd., and IRVING, H. D. Sept. 28, 1954 [Sept. 29, 1953], No. 26751/53. Addition to 729,817. Class 37. The invention is a Patent of Addition to the parent Specification wherein the presence or absence of a conducting or magnetic object is sensed by unbalance between secondary windings of a transformer wound on the parallel limbs of an H-shaped core, having an energized primary winding on the central limb, and is characterized in that the central core limb is removed, initial balance being obtained by relative adjustment of the position of the windings and the cores.
Patent GB-835810-A (GB)
Title: Improvements in or relating to pendulum devices
IPC: G02B27/64
Filed: 1957-08-23
Abstract: 835,810. Optical systems; levels, theodolites. THOMPSON, E. H. Aug. 14, 1958 [Aug. 23, 1957], No. 26756/57. Classes 97(1) and 97(2) A pendulum device for supporting a graticule or other reference member and/ or for supporting other parts of the optical system of an instrument, such as a level or a theodolite, comprises a tiltable body C, having a portion of constant radius and a bob E disposed beneath the tiltable body and secured thereto by a spring member D, part of which is vertically disposed. In another form, Fig. 1, the tiltable body comprises coaxial cylindrical elements 5, and a cylindrical element 6, which, when the body is viewed in elevation appears to intersect the elements 5 or to be tangential thereto Spring straps 3 connect the elements 5 to one end of a bob 2, and spring straps 4 connect the element 6 to other end of the bob 2. When the body is untilted, the axes of the cylindrical elements lie in a common horizontal plane, and all the spring straps are tangential to their respective elements at a common point of intersection, or at the point of tangency, vertically above the centre of gravity of the bob. The pendulum device may be incorporated in a sighting level, in which case the bob has secured thereto a frame F, Fig. 5, carrying a mirror M2 and a graticule G disposed in the light path through the level, which is provided also with an objective O, a mirror M1 and an eyepiece E, connected, like the'body B, to the instrument so as to tilt therewith. Alternatively, the bob may comprise a pivoted arm A having pointers P1, P2 for reading the vertical circle C of a theodolite, Fig. 6.
Patent GB-747334-A (GB)
Title: Improvements in and relating to retractable steerable landing wheels for aircraft
IPC: B64C25/14
Filed: 1954-09-15
Abstract: 747,334. Retractable aircraft tanding gear. BLACKBURN & GENERAL AIRCRAFT, Ltd., and THIRSK, W. H. Sept. 15, 1954, No. 26813/54. Class 4. A retractable steerable aircraft landing wheel leg 1 is rotatably mounted in a member 5 pivoted on a horizontal axis at 6, 6<SP>1</SP>, which leg 1 is at its end pivotally connected on an axis coincident with the said horizontal axis to a shaft 7 carrying a radial arm 9 to which steering movements are imparted by a jack 10 or the like, the retraction gear being operative on the member 1: As illustrated, the wheel 3 is mounted on a fork 2 freely pivoted to the member 1, a shock absorber 4 being operative between member 1 and fork 2. The retraction gear comprises toggle links 11, 12 pivoted to one another and to the aircraft and member 5 respectively at 11<SP>1</SP> and 13. A jack 14 operates between a pivot on the aircraft and a lost motion slot 15 in the link 11. The links 11, 12 preferably pass over the dead centre position when the leg is extended, and are acted upon by.a compression spring 16. A positive lock may also be provided. When the leg is retracted, the aperture in the aircraft skin is faired by doors 17, 18.
Patent GB-1017944-A (GB)
Title: Floating structure
Inventor: LANGEVELD JOHANNES MARIE
IPC: B63B35/44
Filed: 1964-06-29
Abstract: 1,017,944. Floating platform. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. June 29, 1964, No. 26827/64. Heading EIH. [Also in Division B7] A floating structure comprises a platform or deck (1) supported by more than two elongated, parallelly arranged, floating members (2), supporting members (3) between the floating members and the platform or deck, vertically extending stabilising members (4, or 14) mounted on at least two of the floating members, and a horizontal bracing (15 or 16) just above the floating members (2) and between the supporting members and/or the stabilising members.
Patent GB-685910-A (GB)
Title: Improvements in single spindle automatic lathes
IPC: B23B13/00
Filed: 1950-09-14
Abstract: 685,910. Lathes. CONE AUTOMATIC MACHINE CO., Inc. Sept. 14, 1950 [Sept. 15, 1949], No. 26841/51. Divided out of 685,881. Class 83 (iii). A single-spindle automatic lathe comprises power means SM for moving a pusher 306 along a trough 303 aligned with the spindle axis, a slipping clutch to allow stopping of the feed when a stock-bar 304 advanced by the pusher engages a stock stop 376 at the opposite end of the spindle, and means to indicate when the pusher has been fed to a predetermined extent. Specifications 685,881, 685,882 and 685,909 are referred to, the machine described being identical with that of the first Specification.
Patent GB-1237772-A (GB)
Title: Improvements relating to high-voltage electric switchgear
Inventor: SPOONER JAMES
IPC: H02B11/20
Filed: 1967-06-09
Abstract: 1,237,772. Switchgear structures. A. REYROLLE & CO. Ltd. 6 Sept., 1968 [9 June, 1967], No. 26872/67. Heading H1N. A switchgear assembly comprises a multi-pole circuit-breaker (not shown), an earthing switch 25 for earthing all the phases on one side of the circuit-breaker for earthing a circuit connected to the assembly preparatory to testing the circuit, and an insulated test plug 26 for each pole, each test plug comprising an insulating bushing 79 containing a conductor 83 with a terminal 80, 82 at each end and movable between a test position in which the terminal 80 is connected to one phase of the circuit and its other terminal 82 is accessible through a door 24, and an isolated position in which the terminal 80 is spaced from the connection to the phase of the circuit. The test plugs are operated by shaft 94 through linkage 95, 96 and a cradle 90 to the dotted line position, Fig. 11, when the previous closing operation of the earthing switch has released the interlock 150. .. 153 between the shaft 94 and the operating shaft 73, 115 of the earthing switch. The operation of the test plugs 26 to the test position releases the interlock 156 . . . 158 for the access door 24. Each moving contact 71 of the earthing switch is operated by thrust pins 126, 127, 136 on a driving plate 122 and a latch plate 135, a drive pin 131 on the shaft 115 moving the thrust pin 127 to abut and move a lever 120 to close the contact 71 through levers 112, 113, a snap action being provided by an over-centre spring toggle 133, 122. The earthing switch is opened by the drive pins 131 acting on the thrust pins 136, but a selector shaft 140 may be turned so that one of a number of projections 145 engages and lifts a tail 144 of the latch lever 135 of a selected phase. This lifts the thrust pin 136 out of the path of the associated drive pin 131. Thus, in a three-phase arrangement, one phase would remain earthed while the opening of the earthing switch removed the earth from the other two phases to permit testing. The general arrangement of the switchgear assembly is that of Specification 1,237,771.
Patent GB-439905-A (GB)
Title: Improvements in or relating to indicating apparatus particularly for use in tuning of radio receiving apparatus
IPC: H03J1/04
Filed: 1934-09-19
Abstract: 439,905. Adjusting wireless apparatus. KEMP, G. B., 33, Glendale Avenue, Edgware, Middlesex. Sept. 19, 1934, No. 26918. [Class 37] A station name-indicator for wireless receivers comprises a plate formed with transparent points, not on a straight line, and non-transparent lettering indicative of the names of stations, and a cursor having a luminous line, adapted to be moved behind the plate in accordance with the tuning of the set. In the form shown, the indicator comprises a semi-transparent plate, Fig. 1, marked with a horizontal wave-length scale a and with points b having station names appended thereto, and an opaque plate, Fig. 2, secured to the back of the first plate and formed with a horizontal slot c registering with the scale a, and with apertures d registering with the points b. The cursor is in the form of a box, Fig. 3, containing one or more sources of light e, the front wall of the box being formed with a vertical slot f. As the tuning member is adjusted, a spot of light travels along the scale a, and other spots appear and disappear at the points b as successive stations are tuned in. Two sources of light e may be provided for long and short wave reception, the appropriate source being switched in according to the position of the wave length switch. In this case, the names of the short wave stations are arranged above the scale and those of the long wave stations below it.
Patent GB-227939-A (GB)
Title: Improvements in or relating to glass melting furnaces
IPC: C03B5/04
Filed: 1923-10-27
Abstract: 227,939. United Glass Bottle Manufacturers, Ltd., and Moorshead, T. C. Oct. 27, 1923. Glass furnaces. - In a tank furnace having melting and working compartments separated by a bridge wall the corners of the compartments at the ends of the bridge are angled or rounded to reduce the spaces in which dormant glass may collect. In the furnace shown, the bridge consists of two sections C projecting from opposite sides and leaving a passage D which is closed at the glass level by a floating ring E. Each section is iormed of two walls, inclined to one another, the space between the walls being roofed over and serving as a cooling-space. The corners at the feed end of the melting-compartment may also be angled or rounded, so that the compartment is of oval, ovoid, hexagonal, octagonal, diamond or similar shape, and the usual charging-opening may be eliminated by extending the tapered end of the tank beyond the wall F<1> to expose a narrow section I, into which the batch may be fed. The furnace is fired regeneratively by gases supplied through ports G.
Patent GB-1498227-A (GB)
Title: Photoelectronic instrument for measuring the length of an object
IPC: G01B11/02
Filed: 1975-06-25
Abstract: 1498227 Photo-electric scanning apparatus E K SICK [trading as ERWIN SICK OPTIKELEKTRONIK] 25 June 1975 [19 July 1974] 26950/75 Heading G1A An instrument for measuring the length (H), Fig. 1 (not shown), of an object (26) comprises means (2, 4, 6, 8) for producing a scanning light beam (10À1), a photo-electric transducer 21 arranged to be activated by the beam before and after it is cut off by the object, a differentiating circuit 36, a full-wave rectifier 38, a potentiometer 44, and a comparator 40 which generates a trigger signal U 4  when the two inputs are equal, the potentiometer being pre-set so that the signal it supplies to the comparator has a maximum amplitude m of half the unobscured light flux signal U o . A trigger signal is thereby provided at the beginning and end of the cut-off period when exactly half the beam (10À1) has been obscured or has re-emerged irrespective of any change in the magnitude of U o  due to dirt on or ageing of the optical components. The embodiment of Fig.8 also comprises a current-to-voltage converter 34 and fixed resistors 42, 46. Summation circuit 41 adds a small voltage Ug to the reference input of the comparator so that both inputs are not simultaneously zero and a spurious output thereby generated during the cut-off period. A scanning device said to be known, comprises a rotating mirror (6), a fixed mirror 18 and a second photo-electric transducer (21) disposed to receive a portion (10À2) of the beam (10) reflected from narrow light reflecting bands provided alternately with narrow light absorbing bands on a vertical reticule (12). The number of pulses generated by the second transducer during the interval T between trigger signals indicates the required length (H).
Patent GB-483007-A (GB)
Title: Improvements in apparatus for cleaning steam boilers
IPC: F28G3/16
Filed: 1936-10-05
Abstract: 483,007. Soot blowers. SPEARS, F. G. W. Oct. 5, 1936, No. 26980. [Class 99 (ii)] A soot blower comprises a blower tube 1, with end nozzle 2, which is movable axially in a casing 8, preferably by rack-and-pinion mechanism 4, 5, and is adapted to be rotated by the engagement of rollers &c. 16 mounted in an extension 3 of the blower tube with a guide member 15 which projects into said extension. The guide member 15 is preferably in the form of a partly straight and partly helically twisted bar, and it is fixed to the end cover 17 of an extension 7 of the casing 8 or to a ratchet wheel 18 with which a pawl 19 on the extension 7 engages, the latter arrangement permitting rotation of the blower tube only during axial movement in one direction. Cleaning fluid is supplied to the blower tube in its operative position through ports 11 therein from a branch 8a on the casing 8, leakage being prevented by packings 14 compressed against the ends of an interposed ported sleeve 13.
Patent GB-204220-A (GB)
Title: Improvements in engines, more particularly two-stroke cycle internal combustion engines, having stationary cylinders and cam-controlled revolving parts
IPC: F02B57/10
Filed: 1922-10-06
Abstract: 204,220. Michel, H. Oct. 6, 1922. Driving-gear; two-stroke-cycle engines. - In stationary cylinder engines driving through a cam gear, the cam-path b, c, a corresponding to the compression stroke is shaped so as to ensure that the rollers 7 on the cross-heads 5 bear continuously on the cam throughout this stroke. The rollers tend to leave the cam during the movement from c to a, owing to the momentum imparted at the commencement of the compression stroke to the moving pistons, cross-heads etc.; the part c - - - a is constructed to follow up the movement of the roller and prevent separation. The fly-wheel 8 may be formed in segments, each segment corresponding to a complete cycle.
Patent GB-1275077-A (GB)
Title: Improvements in or relating to a liquid or gaseous fuel burner
Inventor: ADRIANOFF ALEXANDER
IPC: F23D17/00
Filed: 1969-05-28
Abstract: 1275077 Burners SOC ANON FRANCAISE DE MATERIEL AUTOMATIQUE ET THERMIQUE 28 May 1969 [5 June 1968] 27081/69 Heading F4T In a liquid or gaseous fuel burner adapted to produce either a narrow fusiform flame or a wide flame, air from a housing 21, 22, 23 is supplied to an outer cylindrical chamber 15, 16 and to an inner tube 9, both disposed concentrically about a fuel nozzle 1, e.g. of the spill burner type, via independently adjustable dampers 13 and 18 respectively, the damper 13 being pivotable on a spindle 14 and damper 18 comprising a cylinder movable longitudinally to uncover blades 19 which are adjustably mounted on pivots 20 to impart a whirling motion to the air passing therethrough. The burner is ignited by an arc from an electrode 4 with the fuel flow rate at a minimum and only damper 13 slightly open. The fuel flow is increased and damper 13 moved until fully open when damper 18 begins to be opened. The flame remains fusiform for some time, since the blades 19 are not fully effective, but to obtain a widened flame, damper 18 is progressively opened, allowing blades 19 to act, while damper 13 is progressively closed. A single servomotor controls both dampers and a fuel metering device via a cam with three independently adjustable profiles.
Patent GB-674315-A (GB)
Title: Method for the purification of titanium tetrachloride
IPC: C01G23/02
Filed: 1950-11-06
Abstract: The vanadium content of impure liquid titanium tetrachloride is reduced by distilling the chloride in the presence of lead amalgam, calcium- or sodium-lead alloy, or fumed litharge containing metallic lead, the lead-base substance being in the form of granules, turnings or shavings.  Examples indicate a weight of up to 30 grams, lead base substance per gram titanium tetrachloride.
Patent GB-632659-A (GB)
Title: Improvements in or relating to automatic feeds for cable-tool drills
IPC: E21B19/08
Filed: 1946-09-10
Abstract: 632,659. Deep-boring. RUSTON-BUCYRUS, Ltd. Sept. 10, 1946, No. 27139. Convention date, Sept. 27, 1945. [Class 85] [Also in Group XXXVII] A cable-tool drill is provided with an automatic feed comprising means responsive to excessive travel of the tool whereby a winch drum is caused to unwind, and means whereby, after a predetermined unwinding, the drum is stopped. As shown, an engine 15 may drive a shaft 33 through clutch 63, the shaft carrying a sun-wheel 32 engaging planet-wheels 35 carried by a winch drum 16, the planet-wheels also engaging an internal gear 34 integral with a worm-gear 38 connected through worm 37 to a motor 36 but normally held by a brake 39, whereby the drum 16 may be driven; a brake 64 normally holds the shaft 33. The engine, through clutch 61, gearing 17 and pitman 24, oscillates a pivoted beam 22 and thereby reciprocates the drill through a cable 18 which passes from drum 16 over sheaves 19, 20, and a derrick-head sheave 21, Fig. 4, to the drill. The sheave 21 is supported in a housing 26 resiliently supported on the derrick mast 14 as by a pile of alternate steel and rubber discs 27. On excessive stroke of the drill, yield of the housing 26 causes an adjustable member 31 momentarily to close a switch 28 and energize a magnet 42, Fig. 5, protected by a cut-out 65, or cam-actuated switch; magnet 42, through a switch 43, energizes a magnet 44 and actuates a switch 45 to close circuits containing a normally closed switch 46, the motor 36, a solenoid 59 which releases the brake 39, and magnets 48, Fig. 6, which cause engagement of a cone clutch 54; the motor 36 then acts through worm-gearing 37, 38, to drive the drum 16 in unwinding direction, also acts through shaft 50, Figs. 3 and 5, gearing 49, 51 and shaft 52 to rotate a cam 57 until the latter acts through arm 58 to open the switch 46, thereby stopping motor 36, releasing clutch 54, applying brake 39, and de-energizing magnet 44. A spring 59a then returns shaft 32 and cam 57 and closes switch 46 ready for further operation. A handwheel 55 controls a stop 60 co-operating with a stop 61a on shaft 52 to adjust permitted movement of the latter. The magnet 42 and switch 43 may be omitted.
Patent GB-833550-A (GB)
Title: Improvements relating to automatic pressure ventilating and heating systems for railway vehicles
Inventor: BENNETT ALBERT EDWIN
IPC: B61D27/00
Filed: 1957-08-28
Abstract: 833,550. Vehicle ventilators. STONE & CO. (DEPTFORD) Ltd., J. Oct 6, 1958 [Aug. 28, 1957], No. 27179/57 Class 137 Air supplied to a railway carriage for ventilation purposes is heated by passage over thermostatically controlled steam and electric heaters, the thermostatic control being common to both heaters As shown, a fan 16 driven by electric motor 17 draws air through the inlet 2, over viscous-oil air filters 4, 5, through radiant heat baffle 6, electric heaters 7, 8, 9 and steam heater 12 to be passed to the interior of the carriage through an outlet 19. The degree of heating of the air is controlled by a thermostat in the air duct leading from outlet 19. This thermostat operates a servomotor which simultaneously operates a mechanical switch 30 for the electric heaters 7, 8, 9 by a chain 32 and sprocket 33, and flap valves (not shown) which control the air flow over steam heater 12 by a chain 23, sprocket 24 and a mechancal linkage (not shown).