baber/WOPTO huggingface dataset:
Patent GB-1306281-A (GB)
IPC: E01B33/02
Filed: 1970-03-24
Abstract: 1306281 Railway track alignment MATISA MATERIEL INDUSTRIEL SA 24 March 1970 [24 March 1969] 14274/70 Heading B7M [Also in Division G1] In a track alignment system the track is moved at each point by an amount which is the algebraic sum of the detected deviation from the desired alignment of the track at the point and a correction factor which is a function of the amount of return movement detected at at least one previously aligned point when the track displacing force was released. Track feeler X is coupled to a core 17 of transducer 18 which develops an output signal which is a function of the deviation of the track at feeler X from a position defined by feelers A, B and C. This signal is applied to a pair of motorized potentiometers 23, 24 which, during an alignment movement initiated by operation of pedal 42, supply an output signal via filter 29 and amplifier 30 to a hydraulic shifting apparatus 37 to reduce the error signal to zero and which after release of the pedal and subsequent return movement of the track supplies an output via the filter and amplifier to drive the relevant potentiometer motor to bring the bridge to equilibrium and thus store a value which is a function of the return movement. During the next correction movement this value or a fraction thereof set by voltage dividers 38, 39 is algebraically added to the detected error signal to provide the signal which is reduced to zero by the shifting apparatus. The subsequent track return signal value is stored for use in the next correction movement.
Patent GB-803149-A (GB)
Title: Improvements in or relating to the preparation of thyroxine analogues
Inventor: HEMS BENJAMIN ARTHUR
IPC: C07C51/363
Filed: 1956-05-08
Abstract: Compounds of the general formula: <FORM:0803149/IV (b)/1> wherein Y is H or I and Y1 is I, and esters and salts thereof, are obtained by treating a compound of the formula: <FORM:0803149/IV (b)/2> or an ester or salt thereof, with iodine in a suitable solvent and in the presence of a suitable organic base.  As solvent there may be used water, dioxan or a lower aliphatic alcohol, e.g. methanol or ethanol. As organic base there may be used a primary or secondary amine which may contain a cyclohexyl or alkylcyclohexyl group and which may contain one or two hydroxy groups, piperidine, a C-alkyl piperidine or morpholine, the base in every case having not more than eight carbon atoms, e.g. methylamine, ethylamine, butylamine, ethylene diamine, dimethylamine, dibutylamine, monoethanolamine and diethanolamine.  Preferably the reaction is effected at from 0-30 DEG C.  By carrying out the reaction in the presence of hydrogen peroxide only half the normal quantity of iodine is required.  Examples disclose the preparation of 3,5,31-triiodo-4-(41-hydroxy-phenoxy) phenyl acetic acid and of 3,5,31,51-tetraiodo - 4 - (41 - hydroxyphenoxy) phenylacetic acid.
Patent GB-1146602-A (GB)
Title: Retractable safety belts
IPC: B60R22/353
Filed: 1966-04-01
Abstract: 1,146,602. Safety harness. R. G. BOARD and N. H. SHAPIRO. 1 April, 1966 [1 April, 1965; 16 June, 1965], No. 14425/66. Heading A3V. [Also in Division E2] A retractable seat belt comprises a spring loaded reel 24 and a belt clamping arrangement actuated by a movable clamp plate 40 over which the strap 22 is trained. As shown the strap is fully retracted leaving a slack portion leading to a tongue 14 of buckle (12, Fig. 1) and the plate 40, which has pivot pins 44 engaged in slots 46 in side plates 34 of the reel housing, falls downwards under the influence of gravity. When the strap is pulled the clamp plate rotates about the pins 44 in a clockwise direction until a flattened portion 48 engages stops 50 (see Fig. 3), after which the strap slides over the plate 40 as it is withdrawn against the tension of a spring 36. After the belt user has fastened the strap slight return motion of the strap allows the plate 40, under the influence of the strap tension on the upper edge of the plate, to rotate slightly in an anticlockwise direction away from the stops 50 (see Fig. 4) then move up the slots 46 until the pins 44 enter the radial portion of these slots and move to the end of the radial portion nearest to the reel, the lower end of the plate 40 then being clear of the stops 50 (see Fig. 5). In this position of the plate if any attempt is made to further withdraw the strap 22 the plate 40 rotates in a clockwise direction until the strap is clamped between the plate 40 and a fixed clamp part 42, preventing further extension. When the belt is unfastened the plate 40 rotates slightly anticlockwise to allow the strap to be retracted and then it falls to the position shown in Fig. 1. In another embodiment (Figs. 9 to 13) a pusher member (58) and an enlargement (64) on the plate may contact the wound-up strap or the reel flanges to aid movement of the pins in the slots in the side plates. In another embodiment (Figs. 14 to 17) a pusher member 58<SP>1</SP> is concentric with the pivot pins of the plate. In other embodiments (not shown) a channel may be provided in the movable clamp plate to guide the strap or the fixed stops may be replaced by stops on the movable clamp plate which project into windows in the side plates 34. The shape and disposition of the clamp plate in each embodiment prevents increments of slack created in the strap during normal use from being taken up, the upper and lower edges of the clamp plate indenting the strap as the plate pivots between the Fig. 5 (unclamped) and Fig. 6 (clamped) positions without the strap moving relative to the surface of the plate. Only after the plate has pivoted to the Fig. 5 position will further relaxation of tension in the strap cause slack to be taken up.
Patent GB-873254-A (GB)
Title: Improvements in or relating to circuit-arrangements for push-pull frequency demodulation or phase comparison
IPC: H03G3/30
Filed: 1958-05-06
Abstract: 873,254. Frequency and phase discriminators; transistor circuits. PHILIPS ELECTRICAL INDUS - TRIES Ltd. May 6, 1958 [May 7, 1957; March 15, 1958], No. 14439/58. Classes 40(5) and 40(6) In a frequency discriminator two voltages in phase quadrature at the mean frequency are applied to the emitter-base paths of two transistors 9, 10 operating as push-pull rectifiers, energized from a circuit 7, 5, 8 series resonant at the mean frequency, the output at 13 being the difference between the rectified currents. One input may be applied from a limiter amplifier 1 through a capacitor 15 to a centre tap of the inductance 6 of the series resonant circuit, the other input being inductively injected in push-pull into the circuit from a tuned collector circuit inductance 4 of the limiter 1 so as to reach through equal capacitors 7, 8 the emitterbase paths in phase quadrature with the first input. R.F. chokes 11, 12 are connected between the emitters and bases of the transistors, and both bases are at radio-frequency earth potential, due in the case of transistor 9 to a capacitor 14. The difference output is taken from the directly connected base of transistor 9 and collector of transistor 10. Shunt trimmer capacitors 17, 3 may be wholly dispensed with. Alternatively one input may be from an independent circuit 35, whose phase is detected. In a modification (Fig. 2) one input is applied in equal phase to the emitters through capacitors 20, 21, 22 and the second input through a capacitor 23 to the junction of an inductance 25 and capacitor 24 forming a series resonant circuit, between the emitters, applying inputs in push-pull to the emitters in phase quadrature with the first inputs at the mean frequency. A differential output may then be taken from across R-C circuits 26, 27 between the bases of the transistors and applied to a pushpull low frequency amplifier. An A.V.C. voltage may be derived at A from the common collector circuit 29. During absence of carrier the noise output at A may be amplified, passed over a threshold circuit to an integrating or delay circuit whose output operates a trigger circuit disabling the low-frequency amplifier, all circuits using transistors. Biased rectifiers 16 may assist the limiters.
Patent GB-528810-A (GB)
Title: Improvements in titanium pigments
IPC: C09C1/00
Filed: 1939-05-15
Abstract: 528,810. Titanium pigments. NATIONAL TITANIUM PIGMENTS, Ltd., WEBER, I. E., and BENNETT, A. N. C. May 15, 1939, No. 14460. [Class 95] Composite titanium pigments are prepared by incorporating in a titanium pigment, barium carbonate which has been heated at a temperature exceeding 200‹ C. The barium carbonate used is preferably a precipitated product, its average particle size, after heating, is preferably at least 3u, and the temperature of heating preferably does not exceed 600‹ C. The heating of the barium carbonate may be conducted in the presence of an accelerator consisting of an alkali metal, its oxide or salt. Examples are given. Specification 523,667 is referred to.
Patent GB-272484-A (GB)
Title: Improvements in steam heating systems
IPC: F24D1/00
Filed: 1927-05-30
Abstract: 272,484. Dunham Co., Ltd., (Assignees of Jarvis, B. H.). June 14, 1926, [Convention date]. Regulating or controlling.-In a steam heated radiator system, the condensate from the radiators rs delivered by a return main to a tank below the level of a vacuum pump, having a float which controls the pump. Steam passes from a boiler A through pipe B and pressure reducer I to branch pipes C and radiators D. Thermostatic traps F permit the condensate to pass through pipes G to return main H. strainer 16, and tank K. If the pressure difference between the two sides of the system falls below a predetermined point, a vacuum regulator N starts an electric motor 11 and centrifugal vacuum pump 3 which circulates water through pipes 4, 6, and receiving tank 1. A jet exhauster 5 in pipe 6 draws water from tank K through pipe 22 and valve 23, and this is delivered into tank 1. Air and gases escape through pipe 2, and when water in tank 1 reaches a predetermined level, float 9 opens valve 8 and permits some of the circulating water to pass through pipe 7 to the boiler A. The pump 3 stops when the pressure difference in the system reaches the required value. If, during the period that the vacuum regulator N is non-operative, the water level in tank K should reach a predetermined minimum, a float 36 actuates a switch L controlling the automatic starter 13 of the motor 11. The pump 3 is thus normally under the .control of either or both regulators N, L. When the predetermined pressure difference is unnecessary, e.g.. during the night, the regulator N is disconnected by a switch 15, the pressure in the return main is atmospheric, and the condensate gravitates into the tank K while air or gas escapes through relief valve 25. The pump 3 is then controlled only by the level of water in tank K. A check valve 67 is provided to equalize the pressures on the two sides of the system if the source of boiler heating is shut off. The construction of the snap-acting switch L is illustrated in Fig. 3. The float 36, Fig. 1, is pivoted on a spindle 30, Fig. 3, which actuates a rod 37 through a crank 38. The rod 37 passes through a lever 40 and carries adjustable stops 41, 42. When the stop 41 lifts the lever 40 pivoted at 62, a roller 61 tends to press the link 54 upwards but is prevented by means of the stop 68 which prevents movement of the lever 52 pivoted at 48. The link 54 thus moves to the right until the roller 61 has passed over the projection 64 on that lever, and the spring 57 then snaps the lever downwards and the lefthand end of lever 52 upwards till the roller 61 rests in the recess 59. This causes the insulated bridge piece 49 to connect the fixed contacts 43, 44 and start the pump 3. When the float 36 falls, the switch is opened with a snap action.
Patent GB-1510705-A (GB)
Title: Separating hydrocarbons
IPC: C10G25/03
Filed: 1976-03-16
Abstract: 1510705 Separating hydrocarbons BRITISH PETROLEUM CO Ltd 16 March 1976 [9 April 1975]14548/75 Heading C5E A vapour phase process for separating nparaffins boiling in the kerosine or gas oil range from a feed mixture thereof with non-straightchain hydrocarbons by means of a bed of a 5Š molecular sieve, comprises (i) an adsorption stage in which the feed mixture is passed into the bed and an effluent is produced from which the n-paraffins have been at least partly removed, (ii) a wash stage in which a mono-nuclear aromatic hydrocarbon in the vapour phase is passed into the bed, and (iii) a desorption stage in which the n-paraffins are desorbed from the bed.
Patent GB-626111-A (GB)
Title: Cable end serving cap
IPC: F16G11/02
Filed: 1947-06-03
Abstract: 626,111. Capping ropes and cords. CATERPILLAR TRACTOR CO. June 3, 1947, No. 14646. Convention date, Jan. 8. [Class 109] A serving or protecting cap for the end of a cable 11 to prevent fraying &c. comprises a tubular body 10 with an open end 13, to which end it tapers outwardly, provided with a wedgeshaped notch 14 so that the open end of the body may be pressed inwardly about the cable until the body tapers inwardly towards its open end. The other end of the body is preferably closed, the closed end 12 being tapered. The enlarged end of the cable, caused by its tendency to fray, is accommodated in the largest part of the body towards its closed end. The cap is usually of metal and may be applied to metallic or non-metallic ropes or cords.
Patent GB-582704-A (GB)
Title: Improvements in and relating to fuel tank installations in aircraft
IPC: B64D37/04
Filed: 1945-06-09
Abstract: 5 8 2 , 7 0 4 . Fuel tanks. BOULTON PAUL AIRCRAFT, Ltd., and NORTH, J. D. June 9, 1945, No. 14650. [Class 4] An aircraft fuel tank 4 is carried in the wing section 1 attached to fuselage 3, the outer wing section 2 being hinged to' the inner section 1 so as to be rotatable upwardly to the position shown in order to allow access to the tank. The wing ribs 15 are apertured to receive the tank, which is provided with spigots 16 received in sockets 19 formed in the inner rib 18 ; the outer end of the tank carries a block 28 pivotally connected to a cover-plate attached to end rib 25. Locking bolts for the two wing parts taking into apertured lugs 8, 9 are operated by a telescoping rod mounted in the outer wing part 2.
Patent GB-1277988-A (GB)
Title: Low noise level semiconductor device and method of manufacturing same
Inventor: MATSUO TAKATOSHI
IPC: H01L29/08
Filed: 1970-03-26
Abstract: 1277988 Semi-conductor devices MATSUSHITA ELECTRONICS CORP. 26 March 1970 [28 March 1969 (3)] 14771/70 Heading H1K The noise level in a Si transistor is reduced by providing a dislocation density in the emitter region of less than 10<SP>5</SP> cm.<SP>-2</SP>, and preferably also by arranging the surface concentration of conductivity-determining impurities in the emitter region to be in the range 1 Î 10<SP>19</SP>-5 x 10<SP>20</SP> atoms/cm.<SP>3</SP>. Three embodiments are described, each comprising a planar Si transistor having a B-doped base region diffused either from a B layer deposited from BBr 3  or from a SiO 2 - B 2 O 3  layer deposited by thermal decomposition of ethyl silicate and trimethyl borate. The emitter region may be formed by diffusion of P from a SiO 2 -P 2 O 5  layer containing 1-30% by wt. of P 2 O 5 , e.g. formed by thermal decomposition of the mixed vapours of ethyl silicate and trimethyl phosphate, and cooling the Si body slowly to produce the required low dislocation density. Dislocation density may also be reduced by including in the emitter region an electrically neutral element such as Sn or Ge. This may be achieved by incorporating SnO 2  into the mixed oxide layer which serves as the emitter diffusion source, the layer being sintered at 800 C. in oxygen before diffusion takes place at 1050 C. in nitrogen. The layer may be deposited from a carrier gas comprising nitrogen and oxygen, the nitrogen having been passed over solutions of ethyl silicate, trimethyl phosphate and tin tetranormalbutyl. In this case a phosphorus surface concentration of as high as 7 x 10<SP>20</SP> atoms/cm.<SP>3</SP> may be tolerated while maintaining the dislocation density below the required limit.
Patent GB-960973-A (GB)
Title: Improvements in and relating to the journal temperature information recording systemfor trains
IPC: B61L1/20
Filed: 1962-04-17
Abstract: 960, 973. Counting apparatus. GENERAL SIGNAL CORPORATION. April 17, 1962 [May 16, 1961], No. 14821/62. Heading G4D. [Also in Division B7] A reversible counter system used in apparatus for detecting the number of carriages in a train comprises two counters 83, 95 which are fed by detectors spaced along the track. The detectors give a pulse each time a wheel flange interrupts a magnetic circuit. When the train enters the tracksection relay TR releases and silicon diode RO conducts. As the wheels of the leading bogie are detected, wheel pulses pass via unit 85 and line 210 so that diodes R1, R2, R3 are conductive in succession. As one diode conducts the preceding diode becomes non-conductive and the succeeding diode is primed. The bogies are assumed to have two or three wheel pairs and there will therefore be produced a signal either at diode 278 or diode 296 in unit 99. When the leading bogie has passed the second detector the counters will indicate the same count and unit 99 will give a pulse which causes future wheel pulses to be counted in reverse by the counters. Thus, the trailing bogie will cause the counters to count to zero, and the counters again to be reversed.
Patent GB-707711-A (GB)
Title: Electrode assemblies for electron discharge devices
IPC: H01J21/36
Filed: 1952-06-13
Abstract: 707,711. Thermionic-cathode tubes. WESTERN ELECTRIC CO., Inc. June 13, 1952 [June 15, 1951], No. 14945/52. Class 39(1) Planar electrodes of a discharge device are spring-loaded against spacing means including a spacing rod, stepped portions determining the interelectrode spacing. In the embodiment of Figs. 2 and 4, the grid is formed on a rectangular frame of tungsten rods 41, 43. The uprights 41 are ground along one side to establish a plane surface to which the laterals 44 can be secured; and a stepped portion 42 is ground at each end of the uprights. Transverse ceramic rods 46 abut against the stepped portions at each end of the grid. The anode comprises side portions 57 connected by the active front portion 56, from which depend stepped fingers 58 at each end. A spring-loaded ceramic rod 60 holds the fingers 58 against the rods 46, so that the anode-grid spacing is determined solely by the diameter of rod 46, the degree to which fingers 58 are off-set, and the depth of the step 42. The spring-loading is effected by a wire spring 61 bearing against two frame rods, 31, 34, of a number supported between two mica members 27, 28. The cathode is a long hollow box 38, spring-loaded against top and bottom ceramic rods 46, so that the cathode-grid spacing is determined solely by the depth of the step 42. The cathode is spring-loaded by a short ceramic plunger 50 passing through a channel 49 in an end-plate member 48; a notch at the rear end of the plunger is engaged by a wire spring 52, bearing against two further frame rods 32, 33. There are two such spring-biasing structures for the cathode, one at each end. The mica plates 27, 28 act as supports only, and play no part in determining the interelectrode spacing, which depends on critical parts which are relatively massive, and hence can be determined and maintained with considerable accuracy. It is stated that anode-grid spacings down to .003 inch and cathode-grid spacings down to .001 inch can be obtained with ease and precision; and that with this type of construction, thermal expansion of the electrodes, either normal to or parallel to the grid plane, does not affect the spacing. In Fig. 6 (not shown) the cathode and a screen electrode are mounted and accurately spaced on either side of the grid by a similar technique. Fig. 7 shows a modification in which this method of spring-loading electrodes against high-precision spacing means is applied to a construction in which all the electrodes are supported from a single mounting plate 90. The anode 108 and the cathode 101, on either side of grid 97, are biased by respective spring wires 113 and 105 against insulating rods 99, the spacing being determined as described above.
Patent GB-782769-A (GB)
Title: Stacking and nesting boxes
Inventor: SPARROW JOSEPH
IPC: B65D21/06
Filed: 1955-05-25
Abstract: 782,769. Boxes. UVA PRODUCTS, Ltd. Jan. 31, 1956 [May 25, 1955], No. 15038/55. Class 18. Boxes of tapered form to facilitate nesting have handles 18 which when turned inwardly support the base of a similar box stacked above. Outward pressings 19 prevent the nested boxes from becoming jammed. Specification 727,689 is referred to.
Patent GB-720619-A (GB)
Title: Polishing material
IPC: C09K3/14
Filed: 1952-06-16
Abstract: A polishing material (especially for ophthalmic glass) consists of zirconium orthosilicate obtained from natural zircon sand and in a state of subdivision such that at least 40 per cent by weight of the particles lie within the range of 1 to 4 microns in average diameter, not more than 40 per cent being below 1 micron, not more than 70 per cent below 2 microns, not more than 30 per p  cent 4-10 microns and none above 10 microns.  It is preferred to use a fairly pure sand from which practically all the ilmenite and rutile normally associated with zircon sands have been removed. The sand is preferably wet ground in a ball mill, and for batch operation until at least 80 per cent is below 5 microns.  The ground material is then diluted with water to about 20 per cent solids and classified, preferably by continuous single pass centrifugal classification.  For special purposes the suspension may be plural pass classified to produce a material having no particles above 10 microns in average diameter, at least 70 per cent by weight 1-4 microns, at least 40 per cent 2-3 microns, not more than 30 per cent below one micron, and not more than 10 per cent of 4-10 microns size range.  By further refinement of procedure a material can be obtained of which at least 80 per cent by weight is in the 2-4 microns range, and having no particles above 10 microns The white polishing material of the invention does not have the objectionable staining properties of rouge or the health hazards of silica, is more abundant than ceria and more easily kept in suspension than zirconia.  Data are furnished for the lens polishing properties of samples of zircon powder of various grades of fineness.  U.S.A. Specification 2,427,799 is referred to.
Patent GB-1459590-A (GB)
Title: Electrically-conductive gas filter medium
IPC: B03C3/155
Filed: 1974-04-05
Abstract: 1459590 Gas filtering; electrostatic separation FILZFABRIK FULDA GmbH 5 April 1974 [6 April 1973] 15190/74 Headings BIT and B2J [Also in Division D1] A gas filter medium comprising fibres of a wide range of materials, consolidated by weaving, knitting, fleecing, needling or bonding with heat or adhesive, is rendered electrically conductive by incorporating metal, lamp black or graphite particles of 2 Î 10<SP>-3</SP> to 10 microns dia. in its pores. This increases its active filtering surface by 3 to 2000 times and gives it an electrical volume resistivity of less than 10<SP>3</SP> ohm-cm. The particles are formed by surface carbonisation or deposited from a suspension, which may include adhesive, by dipping or spraying. Pores may be 5-1000 microns dia., and fibres may be 1.5 to 150 microns dia. Electrical conductivity prevents change build up in a dry filter or enables the medium to be used in an electrostatic filter. Medium is used as a bag, tube or moving band. The band may circulate from a filtering zone to a cleaning zone where dust is removed by air or water spraying. Gas to be filtered may pass between stretched wire electrodes charged to 20-60 Kv and shielded from direct impingement upstream of the moving band of filter medium, which is earthed to collect the dust by electrostatic action and mechanical filtration.