baber/WOPTO huggingface dataset:
Patent GB-1393913-A (GB)
Title: Method of producing vaccum-tight seals between ceramic and aluminium components evacuated envelopes incorporating the components sealed by said method and vacuum tubes incorporating siad envelopes
IPC: H01J5/20
Filed: 1972-11-01
Abstract: 1393913 Brazing THOMSON-CSF 1 Nov 1972 [5 Nov 1971] 50434/72 Heading B3R [Also in Division H1] In making a vacuum tight seal between a ceramic component 1 and an aluminium component 2 a zone of the ceramic component is metallized, the aluminium component is placed in contact with the metallized zone, an aluminium-silicon brazing alloy (89% Al-11%Si) is placed adjacent the contacting components and the assembly is heated to 580‹ C. in a non- oxidizing atmosphere to melt the brazing alloy and effect the seal. The ceramic component 1 is a tube which is metallized at 4 over its outer wall, several layers being used with the outermost being nickel. The aluminium component 2, also a tube, is formed at its end to provide a recess 5 and a projection sleeve and the components are assembled with the sleeve about the metallized end of the ceramic tube. A wire 6, e.g. of molybdenum having a coefficient of expansion similar to that of the ceramic is wound about the sleeve and a wire 7 of solder, possibly flux coated is arranged about the components. Heating by high frequency induction, by electron bombardment or in an oven is effected in a controlled non-oxidizing atmosphere. In an example the ceramic is 97% alumina metallized by coating with a suspension of molybdenum and manganese followed by heating at about 1600‹ C. and then electrolytically nickel-plating. In a modification the end of the aluminium tube has an inner sleeve fitting within the ceramic tube and the wire 6 is omitted. A ring of molybdenum in two or more parts is arranged between the end of the ceramic tube and the aluminium tube and is removed after brazing. The components to be joined may be parts of an X ray vacuum tube, the aluminium component being a filter forming an integral part of the tube envelope. Microwave electronic tubes comprising envelopes made of a succession of ceramic and aluminium components may be made using the method of the invention.
Patent GB-1064092-A (GB)
Title: Improvements in or relating to drafting mechanisms for spinning machines
Inventor: DAUSCH ERNST
IPC: D01H5/26
Filed: 1963-12-20
Abstract: The bottom apron of drafting-apparatus is tensioned by a guide-member carried by a member projecting downwardly from the nose-bar or bridge and which is resiliently urged against the apron and draws it towards the upper face of the bar or bridge. In Fig. 1 (not shown), a resilient member (11) is looped over the nose-bar (10) to contact the apron at (11\sv), and is secured by a set-screw (14) with or without a clamping-member.  In other forms, the member (11) has a rearward extension and an upwardly-projecting rib or nipple, the better to control the fibres; it may be attached by the engagement of an end in a slot or notch in the downward member and it may have integral guiding lugs (12) or be looped around or otherwise connected to a bar having guide lugs.  In Fig. 11, (not shown) the nose-bar is common to a number of aprons and has a downward web (37) ending in a head (38) constituting a pivot for a member (36) for each apron, a spring (41) and a locating-lug being provided.
Patent GB-1212278-A (GB)
Title: Process for the production of propylene oxide
Inventor: BRANDT HANS-WALTHER
IPC: C07D301/26
Filed: 1968-10-24
Abstract: 1,212,278. Propylene oxide. FARBENFABRIKEN BAYER A.G., and ERDOLCHEMIE G.m.b.H. 24 Oct., 1968 [30 Nov., 1967], No. 50526/68. Heading C2C. A process for the continuous production of propylene oxide comprises reacting propylene with chlorine water, dividing the aqueous hydrochloric acid solution of propylene chlorohydrin thus formed into two component streams by fractional distillation, the sump product which runs off consisting of dilute aqueous hydrochloric acid free from any organic constituents, whilst a propylene chlorohydrin solution, which is subsequently hydrolysed by aqueous alkali liquors, is removed overhead as a distillate. Advantageously dichloropropane is added to the distillate enabling an organic phase enriched in chlorohydrin and an aqueous phase depleted in chlorohydrin to be formed. After the hydrolysis the propylene oxide formed is purified by fractional distillation.
Patent GB-1461108-A (GB)
Title: Continuous process for the extraction of nitrates from solutions containing nitrates
IPC: C01B21/46
Filed: 1974-11-21
Abstract: 1461108 Extraction of nitrates KEMIRA OY 21 Nov 1974 [22 Nov 1973] 50553/74 Heading C1A Nitrates are continuously extracted from aqueous nitrate-containing solutions by (1) contacting the aqueous nitrate solution having a pH of 0 to 7 with an extraction solution containing a chloride salt of a water-insoluble organic amine in solution in a water immiscible organic solvent to effect exchange of the nitrate and chloride ions so that the extraction solution contains the cation of the organic amine and the nitrate anion, (ii) contacting the extraction solution from step (i) with an aqueous stripping reagent having a pH of at least 0À5 and containing KCl salt to effect exchange of nitrate ions and chloride ions so that the stripping solution contains the potassium cation and nitrate anion and the original organic amine salt is reformed in the extraction solution, (iii) maintaining the concentration of the KNO 3  salt in the stripping reagent at a value such that KNO 3  continuously crystallizes from the solution and such that nitrate anions and stripping reagent chloride anions continuously exchange in step (ii) and wherein the extraction solution from step (ii) is recycled to step (i) and the nitrate salt which crystallizes from solution in step (iii) is separated from the solution and a quantity of KCl equivalent to the separated nitrate salt is added to the stripping reagent solution and is recycled to step (ii) and wherein the chloride anion of the organic amine salt passing over into the nitrate containing solution is continuously removed from the treated nitrate containing solution, the latter being then recycled to step (i). The water-insoluble amine may be a primary, secondary or tertiary aliphatic or aromatic amine having one or more alkyl groups containing from 10 to 20 C atoms. The extraction solution may contain an aliphatic or aromatic hydrocarbon and the stripping step (ii) is preferably undertaken at 20 to 30 C.
Patent GB-1206116-A (GB)
Title: Improvements in or relating to fuel elements for nuclear reactors
Inventor: EATON CARL WILDING
IPC: G21C3/34
Filed: 1966-11-11
Abstract: 1,206,116. Fuel elements. UNITED KING- DOM ATOMIC ENERGY AUTHORITY. 3 Nov., 1967 [11 Nov., 1966], No. 50759/66. Heading G6C. A fuel element comprises a cluster of fuel pins spaced and transversely located by transverse grids within an outer support sleeve, one of the grids being a support grid for supporting the fuel pins axially and being fabricated from a plurality of generally radical structural members attached to an outer support ring, a cellular structure for locating the ends of the fuel pins, comprising fuel pin cells joined by webs, being secured to and within the depth of the structural members. The support grid, shown in Fig. 3, has an outer support ring 5 which is held in engagement with a shoulder at the lower end of the outer graphite sleeve 1 by an inner sleeve 7 screwed at its lower end to the sleeve 1. The main structural members 19 of the support grid are joined by welding to the ring 5 and to a central ring 18. Fuel pin cells 20 are formed from bent strip material, edge on to coolant flow and thinner than the members 19, and spotwelded together and to the members 19 in a manner such that the latter divide the grid structure into units of equal numbers of cells. The width of the walls of the cells 20 is either equal to or less than the width of the members 19. The grid is prevented from rotating by engagement of three equi-spaced lugs 21 on the ring 5 in recesses 22 in the above-mentioned shoulder of the sleeve 1. A tube which extends the length of the element and which is carried by a ferrule secured within the ring 18 forms a guide for a fuel element lifting rod. Each fuel pin 35 (Fig. 4) comprises a stainless steel sheath 36 provided with circumferential or helical ribs and containing a stack of ceramic fuel (e.g. UO 2 ) dished-ended pellets 38. An insulating disc 39 at each end of the stack separates the pellets 38 from direct engagement with end caps 40 welded to the sheath. At the lower end of each fuel pin 35, a ferrule 41 is butt fusion welded at 42 to the respective end cap 40 and sheath 36, this serving for sealing of the end cap/sheath interface in addition to a seam weld 43. When positioned in the respective cell 20 of the grid, a shoulder 44 on the sheath 36 engages the top edge of the cell 20 and the lower end of the ferrule 41 is bent outwardly to engage the lower edge of the cell 20. The sleeve 1 has an outwardly chamfered spigot of reduced diameter at its lower end and an annular recess at its upper end with which the spigot of an adjacent fuel element can engage.
Patent GB-1405815-A (GB)
Title: Magnetic tape cartridge and system
IPC: G11B15/68
Filed: 1973-11-05
Abstract: 1405815 Magnetic tape cartridge INTERNATIONAL BUSINESS MACHINES CORP 5 Nov 1973 [11 Dec 1972] 51215/73 Heading B8M A magnetic tape cartridge comprises a magnetic tape reel 22, an openable housing 10 which is co-operable with an external opening means to open the housing and thereby expose the reel, a mounting means mounting the reel for rotation, and a biasing means urging the mounting means to carry the reel towards the openable portion of the housing. As described the housing comprises covers 12, 14 pivotally mounted at 18 on a yoke 16 and urged together by springs 20. The reel 22 is carried by a hub 24 coaxially supported in a part-cylindrical shroud 26, and the shroud has guide elements 28 slidable along rails, e.g. 32b, integral with the yoke. A spring 48 urges the shroud so that the reel 22 engages the inside of the housing when the covers are closed. In use cartridges 10 are mounted in a record/ playback system, Fig. 5, with male and female sections on the rails 32b of adjacent cartridges interengaged. A conveyer 54 feeds a selected cartridge to a read/write station where wire loops 38 engage walls 44, Fig. 1, of the covers 12, 14. The core 36 of a solenoid 34 is then advanced against the yoke 16 to urge it to the position shown in Fig. 3 in which the housing is open. In this situation the spring 48 urges the reel 22 against a drive capstan 46 for record/ playback of the tape. In an alternative record/playback system a single cartridge is pushed into a space between grooved walls at a read/write station and is held in an open position by a manually releasable spring-loaded latch mechanism.
Patent GB-1425108-A (GB)
Title: Process for the treatment of waste ma'terial
IPC: C04B28/02
Filed: 1973-11-07
Abstract: 1425108 Treating waste materials; hydraulic composition G KROPFHAMMER 7 Nov 1973 51682/73 Headings C1K C1J and C1H [Also in Division C3] Domestic, agricultural or forestry waste material is comminuted, mixed with a substance which in the mixture is alkaline, at least partially dehydrated and the decomposed material thus produced is mixed with a binder and then compressed to form a building element. The binder, e.g. a hydraulic binder or synthetic resins is preferably added by spraying the material as it descends freely in loose form. Surface active, sterilizing and disinfecting agents may be incorporated into the mixture. The preferred alkali-producing substance is CaO which also dehydrates the material.
Patent GB-1328652-A (GB)
Title: Agricultural machine for tilling the soil
IPC: A01B63/00
Filed: 1970-11-02
Abstract: 1328652 Agricultural implements N CANTONE 2 Nov 1970 [5 Nov 1969 10 March 1970 22 July 1970 29 Sept 1970] 51925/70 Headings A1B and A1D A soil-tilling machine has a main frame structure 10 and an assembly comprising rotary tilling implements e.g. hoes 32', Fig. 3, rotating about an axis perpendicular to the direction of intended travel and parallel to the ground, which till the soil and impart a forward thrust to the machine. The assembly can be lifted or forced downwardly e.g. by rams 58. Steering and speed control means either a tractor 14, or a "fore train" (114 Fig. 11 not shown) controls the speed and direction of the machine and a motor 34 drives the implements, while another is provided for the steering and speed control mechanisms. For transportation, the implements may be arranged in two or more sets 30, hinged as at 52 to be raised by rams 56 so that their shafts 48 are vertical. End ploughs e.g. in the form of freely rotatable concave discs 60 may be provided to open grooves for the free passage of transmission boxes 46 and to stabilise the motion of the machine. Lateral hinged plates 68', Fig. 3, may also be provided to prevent sideways ejection of clods when disposed vertically and a member 96 and roller 100 Fig. 9 level the ground. Seeding and fertilising may be carried out by distributors 84, 86, Fig. 1, seeding device 104 and fertiliser, herbicide and insecticide sprayers 108, Fig. 9. The seed may also be pneumatically applied through nozzles (104a Fig. 10 not shown).
Patent GB-1237828-A (GB)
Title: Improvements in or relating to magnetic field modulating arrangements
IPC: G05F7/00
Filed: 1969-10-24
Abstract: 1,237,828. Automatic voltage control. YISSUM RESEARCH DEVELOPMENT CO. OF THE HEBREW UNIVERSITY OF JERUSALEM. Oct.24, 1969 [Oct.25, 1968], No.52156/69. Heading G3R. A circuit for stabilizing the amplitude and phase of a signal applied to modulate a magnetic field comprises an oscillator connected through terminal 14a, a fixed attenuator circuit, and a switch section 16d to an output terminal 13a which feeds modulation coils through a power amplifier. A pick-up coil is positioned between the poles of the magnet system and is connected through input 19a, attenuator 19, integrator 20, and switch section 16a to a driver amplifier 21. The output of the latter is connected to rectifier 22 and a summing circuit associated with a reference circuit 27. The error signal is adapted to be applied to an automatic gain control amplifier 29 which is selectively coupled to terminal 13a. In position 1 of the ganged switch 16a-16d, a power supply is connected to the oscillator and modulator power amplifier only. In position 2; the oscillator is adjusted for optimum A. G. C. input until a panel meter associated with the rectifier 22 reaches a predetermined setting mark. The modulation peak-to-peak value is read on the meter in the third position of the ganged switch, the waveform of the magnetic field changes being observed by an oscilloscope connected to terminal 21a. In position 4, the integrated and rectified output signal is compared with the reference and the resultant signal controls the gain of the amplifier 29 for stabilizing the modulation amplitude. A phase sensitive detector is connected to the output of amplifier 21. The system may be applied to magnetic field modulating arrangements of the type used in electron-spin resonance spectrometry.
Patent GB-1104340-A (GB)
Title: Transistorized differential amplifier
IPC: H03F3/343
Filed: 1966-11-23
Abstract: 1,104,340. Transistor amplifiers. CORNING GLASS WORKS. 23 Nov., 1966 [30 Nov., 1965], No. 52437/66. Heading H3T. In a four-stage differential amplifier using NPN transistors, the D.C. bias on the collector of each transistor of at least one stage is maintained slightly above the bias on the base of that transistor, thus providing minimum noise conditions in that stage. In the first stage Q1-1, Q2-1, the difference in collector and base biases is equal to the emitter-base voltage drop of each transistor in the second stage, the bases of the first stage and the emitters of the second stage being all effectively at - VBB volts. Similarly, tne difference in collector and base biases of the third stage transistors is equal to the emitter-base voltage of each transistor in the fourth stage, resistors R7, R8, R16 and R18 being of suitable magnitudes. Resistors R3, R4 and R9, R10 ensure slight differences between the collector and base biases of the transistors of the second and fourth stages. At high frequencies, inductors L1, L2, L3, L4 become effective to reduce the negative feedback in the second and fourth stages, whilst capacitors C2, C4 become effective to reduce the impedanc between the emitters of the transistors in the first and third stages, and thus the gain of all stages increases to compensate for the inherent gain reduction in the transistors at high frequencies. NPN transistors are used because of their suitability for thin film fabrication.
Patent GB-1235568-A (GB)
Title: Improvements in or relating to glands for terminating electrical cables
Inventor: HENDRICKSE GEORGE FRESHARDT
IPC: H02G15/04
Filed: 1968-12-07
Abstract: 1,235,568. Cable glands. BRITISH ENGINES Ltd. 16 Oct., 1969 [7 Dec., 1968], No. 58245/68. Heading H2E. Relative tightening of the male 1 and female 3 parts of a terminating gland, for an electric cable, forces the collar 5 against the internal bearing surface of the male part so reducing the diameter of the collar until it grips the cable 6, thus enabling different sizes of cable to be accommodated. The internal bearing surface 4 may be of nylon. A backstop 2 of appropriate size may be used to stopthe cable armouring from passing the gland.
Patent GB-1083700-A (GB)
Title: Method of sterilising objects by use of steam
IPC: A23L3/358
Filed: 1965-12-13
Abstract: Articles, especially containers such as food tins, are sterilized by contact with acid steam.  Preferably the steam is at a temperature between 110 DEG  and 177 DEG C. and has a pH below 4.0.
Patent GB-1132700-A (GB)
Title: Retractable safety belt apparatus
IPC: B60R22/353
Filed: 1965-12-14
Abstract: 1,132,700. Locking rotary elements. R. G. BOARD, and N. H. SHAPIRO. 14 Dec., 1965 [14 Dec., 1964], No. 53056/65. Heading F2E. [Also in Division A3] A retractable seat belt assembly comprises a retraction device for the belt, means for preventing extension of the belt and a belt guide supported for movement between a first position, at which the preventing means is inoperative, and a second position at which the preventing means is operative. In one embodiment the belt 22 is wound on a spring retraction reel in a housing clamped to the vehicle. The reel has a ratchet wheel 42 at at least one side and is biased to retract the belt by a helical torsion spring 25. A guide for the belt is pivotally mounted in the housing about an axis 46 parallel to the axis of the reel. The guide is U-shaped with side-plates 50 and a cylindrical cross-pin. The belt passes around the pin and urges the plates 50 against stops 54 on the housing during extension of the belt. When the tension in the belt is released the guide pivots and the cross-pin engages the ratchet wheels 42 to prevent further extension. The belt may now only be retracted under the influence of the spring 25. When a sufficient length of belt has been retracted on to the reel the guide is in such a position that the belt may be extended again. The U-shaped guide may have an additional cross-pin near the pivot 46. In a further embodiment, Figs. 4-9 (not shown), the belt guide is U-shaped and is mounted so that its legs (62) move radially of the reel in guides (64). A projection (66) on each leg engages with the guides 64 during extension of the belt but when the tension is relaxed the leg moves through the guide so that its end (68) engages the ratchet wheel. In a third embodiment, Figs. 10-13 (not shown), the U-shaped guide is formed with a bell-crank shaped leg (76), (78) which engages with the ratchet-wheel (72) when the tension in the belt 22 is released. In a fourth embodiment, Figs. 14-17 (not shown), the guide is a shaped plate (86) pivoted about one edge (88) and having a curved opposite edge over which the belt passes. A projection (94) on the plate engages the belt wound on the reel and pins (92) mounted on the ends of the plate engage the ratchet wheel (84). In a final embodiment the guide is U-shaped as in the first embodiment, the arms 100 having an arcuate plate 108 fixed thereto, the plate 108 acts as a brake against the belt on the reel when the tension in the reel is relaxed. The arms 100 have extensions 112 at their opposite ends which pass through to side wall of the housing. To disengage the brake from the reel the arm is pushed into the housing and the groove 116 engaged with the wall. Retraction of the belt is prevented by co-operation of the projection 118 with the joint 112A of the arm. The cooperation is sufficient to prevent retraction but the belt may be further extended. The plate 108 may be arranged to act on side plates of the reel rather than the belt.
Patent GB-1215036-A (GB)
Title: Improvements in or relating to refuse-collecting vehicles
Inventor: TILLSON THOMAS WILLIAM
IPC: B65F3/20
Filed: 1968-11-08
Abstract: 1,215,036. Loading refuse vehicles. SHELVOKE & DREWRY Ltd. 8 Nov., 1968, No. 53125/68. Addition to 1,011,931. Heading B8E. The refuse-collecting vehicle of the parent Specification is modified in that the tearing members 16, located in the opening 8 between the receiving section 4 and the main body section 2, are rotatably mounted. In one embodiment, Fig. 3 (not shown), the scalloped plates 16 are welded to the bar 18 which is rotatably mounted on the side walls of the section 4. Alternatively, the plates may be individually freely rotatable on a fixed bar 18, Fig. 4 (not shown). In a further embodiment, Fig. 5 (not shown), elongated tearing plates are welded to a bar 18 which, at each end, is welded to one end of an arm, the other end of the arm being mounted for limited pivotal movement on the wall. As shown in Fig. 7, the loading device for moving the refuse past the tearing members 16, comprises a series of tines 28 connected to pivoted arms 36 and to a rotating wheel 40, whereby the tips of the tines move in an oval path 32.
Patent GB-1262832-A (GB)
Title: Refrigerated shipping container
IPC: B65D88/74
Filed: 1970-11-09
Abstract: 1,262,832. Refrigerated containers. ELECTRONIC ASSISTANCE CORP. 9 Nov., 1970 [7 Nov., 1969], No. 53217/70. Heading F4H. [Also in Division H2] A portable container is refrigerated by a unit which is operated by an electric power supply 30 of at least two different frequencies e.g. 60 and 400 cycles per second, which is connected to electric motors 44, 46, 48 driving a compressor 80, evaporator fan 82 and condenser fan 84 respectively. Each motor has two configurations responsive to the two frequencies so that each motor responds at substantially the same operating speed in either configuration e.g. by employing two poles in the 60 cycle configuration and twelve poles in the 400 cycle configuration. The power is supplied to the motors via switches 50, 52, 54 each controlled by two relays, one of which is connected to a 60 cycle pass filter 70 and the other to a 400 cycle filter 74. The compressor 80, Fig. 3, evaporator 82<SP>1</SP> and condenser 84<SP>1</SP> are connected in a refrigerator circuit 86 having a two-way throttling valve 92 controlled by a solenoid 94 responsive to a thermostat 100 in the container which permits normal flow of refrigerant through the circuit below a predetermined temperature and diverts the refrigerant through a line 98 to by-pass the evaporator above that temperature. The cold air from the evaporator may pass into the container through hoses.