baber/WOPTO huggingface dataset:
Patent GB-1112326-A (GB)
Title: Improvements in joints for plastics pipes
IPC: G01N3/00
Filed: 1966-08-04
Abstract: 1,112,326. Pipe joints. KUNSTSTOFFWERK, GEBRUDER. ANGER G.m.b.H. & CO. 4, Aug., 1966 [6 Aug., 1965], No: 35042/66. Heading F2G. In a joint for-connecting plastics pipes, the socket 1 is formed with an annular groove 3 for the reception of a rubber sealing ring and has an internal diameter between the groove and the pipe 2 which exceeds the external diameter of the pipe 5 sufficiently to allow the creation of a satisfactory adhesive bond in this region, and an internal diameter between the groove and the lip of the socket which exceeds the external diameter of the pipe 5 sufficiently to prevent contact in this zone between the spigot and socket when the spigot is angularly deflected out of axial alignment. In a modification, an annular constriction is formed in the socket between the groove and pipe 2.
Patent GB-486408-A (GB)
Title: Improvements in muffles, annealing boxes and the like
IPC: C21D9/00
Filed: 1937-12-18
Abstract: 486,408. Annealing - boxes. OSTERLIND, C. R. Dec. 18, 1937, No. 35093. Convention date, Dec. 19, 1936. [Class 72] [Also in Group XII] In an annealing-box having a sand-sealed cover 7 the sealing-flanges 5 are so formed that the cover can be used either way up. The seams of the box may be sand-sealed to the base and the cover may be made of thinner material than the remainder of the box.
Patent GB-191048-A (GB)
Title: Improvements in and relating to electric switching apparatus
IPC: H02B11/173
Filed: 1922-12-27
Abstract: 191,048. British Thomson - Houston Co., Ltd., (Assignees of French, H. G.). Dec. 27, 1921, [Convention date]. Switchboards; sliding switch carriage arrangements.-Cases for electrical switch gear of the enclosed unit panel type are arranged with the oil switches attached to a front cover which can be swung outwardly for inspection and repair, the switch at the same time being isolated from the supply as the movable front carries isolating contacts co-operating with fixed contacts in the interior of the panel when the panel is swung back into position. The box-like casing 1 is built up from metal plates 2 and angles 3 and contains a terminal board 4 carrying supply terminals 5 and circuit terminals 7, bus-bars 6 running through side openings in the casing being connected to the terminals 5 and leads 8 passing out from the terminals 7, current transformers &c. 9 being included. The oil switch 11 is attached behind the front plate 10 and has its terminals connected by leads 14 to contact jaws 17 on a board 16 which are arranged to register with fixed contacts attached to the terminals 5, 7. An insulating barrier 19 is disposed between the fixed and movable contacts 17, 18, the terminals 7 projecting through suitable slots therein. The plate 10 is arranged to be swung outwardly by means of parallel links 21 secured between pivots 22 in the casing 1 and pivots 23 in the switch head 24, one pair of links 21 co-operating with stops 39 to limit the outward swing of the switch panel. Springs 25 are provided between the case 1 and links 21 to assist the return motion of the switch. In order to lock the switch plate in position, a pair of pivoted bell crank levers 44, 41 are provided with operating handles 45 which on being depressed cause pins 42 to engage fixed plates 43 in the casing 1. The levers 44, 41 have a third arm 46 which co-operates with an arm 47 of the oil switch operating lever 48 to prevent the withdrawal of the front plate 10 while the oil switch is closed. Further, closure of the oil switch operates the locking means if the panel is not already locked in position. In Fig. 5 is shown an alternative form of link mechanism in which the parallel links 27 and 28 are pivotally connected to a shorter pair of links 32 pivoted to the casing 1 at 33. A horizontal distance link extends across the lower ends of the links 27, 28 and the latter has a crank-like extension 29 terminating in a roller 34 which moves along guides 35. When the switch is drawn the switch moves along a flattened arcuate path 36 approaching a straight line in form and by preventing excessive lowering of the switch enables it to be restored with a minimum of effort, assisted by the spring 37. A hasp 49 is provided to carry a padlock to prevent tampering with the latching handle 45, and instruments may be mounted on the front of the panel 10.
Patent GB-1075223-A (GB)
Title: Preparation of quinolines
IPC: C07D215/04
Filed: 1964-08-28
Abstract: Quinolines are prepared by heating aniline or a substituted aniline having an alkyl, alkoxy, halogen, nitro, hydroxy or trifluoromethyl nuclear substituent group or groups and in which at least one position ortho to the amino group is unoccupied, or an acid addition salt or acyl derivative of aniline or said substituted aniline, with a carbonyl compound of the formula R1CH = CR2COR3, wherein R1, R2 and R3 represent hydrogen, alkyl or aryl, or a precursor which generates such a carbonyl compound under aqueous acidic conditions and has a formula selected from R1CHY.CHR2.CR3X2, R1CH = CR2.CR3X2 and R1CHY.CHR2.COR3, wherein R1 and R2 represent hydrogen or alkyl, R3 represents hydrogen, alkyl or phenyl, Y represents hydroxy, alkoxy, acetoxy or halogen and X represents alkoxy, acetoxy or halogen, in a reaction medium consisting essentially of "arsenic acid" at a temperature of 110 DEG  to 130 DEG  C. Alternatively, an intermediate b -arylamino aldehyde or ketone reaction product, obtained by reacting, at 20 DEG  to 110 DEG  C. in the presence of an acidic catalyst, an aniline or salt or derivative thereof as defined above with a carbonyl compound or precursor thereof as defined above, may be heated at 110 DEG  to 130 DEG  C. in a reaction medium consisting essentially of "arsenic acid" to yield the quinolines.  The "arsenic acid" is defined to be a solution of arsenic pentoxide in water forming essentially ortho-arsenic acid H3AsO4 1/2 H2O.
Patent GB-733137-A (GB)
Title: Improvements relating to the cleaning of heat exchange apparatus
IPC: B24C3/32
Filed: 1953-12-18
Abstract: 733,137. Cleaning heat-exchangers. AKTIEBOLAGET A. EKSTROMS MASKINAFFAR. Dec. 18, 1953 [Dec. 20, 1952], No. 35382/53. Class 99 (2). Pellets, e.g. steel shot, are dropped onto the heat-exchange surfaces of, for example, a heating boiler 10, the pellets being simultaneously released along a predetermined line above the surfaces and from distributing means such as a helical conveyer screw 16 rotatable within a tube 13 of heat-resistant metal disposed transversely of the boiler and parallel to the heating surfaces 11. The pellets may be fed into the tube 13 from a hopper 20 and discharged through a helical slot 14 in the wall of the tube. As shown in Fig. 4, the slot 14 commences on the upper side of the tube 13 and continues downwardly to the opposite wall of the boiler, and to ensure an even distribution of the pellets the pitch of the screw 16 decreases progressively from the intake end of the tube; alternatively, the screw comprises portions having uniform but different pitches, or the tube is inclined and the screw has a uniform pitch. As shown in Fig. 2, three tubes 13 are disposed parallel to each other and the screws 16 are rotated by chaindriven sprockets 21, 22, the middle screw being rotated at a speed to feed a larger quantity of pellets onto a greater area of heating surface. After performing a cleaning operation the pellets collected in the bottom of the boiler 10 pass to a device 32 which draws off soot and dust while the pellets are returned via a conduit 25 and by air pressure from a fan 33 to the hopper 20. A baffle 27 deflects the pellets to the bottom of the hopper, the latter having a vent 28 through which the pelletconveying air passes to a flue-gas suction fan 30.
Patent GB-989504-A (GB)
Title: Preparation of fluorochlorobenzenes
Inventor: NYMAN FRANK
IPC: C07C17/20
Filed: 1962-09-18
Abstract: Fluorotrichlorobenzenes are prepared by heating in absence of moisture a tetrachlorobenzene at at least 100 DEG  C. for at least 12 hours with an alkali metal fluoride in an inert polar non-proton-donating organic liquid medium. Preferably, 1,2,4-trichloro-5-fluorobenzene is thus produced from 1,2,4,5-tetrachlorobenzene. Specification 970,746 is referred to.
Patent GB-1434238-A (GB)
Title: Tank of thermoplastics material
IPC: B60K15/077
Filed: 1973-07-26
Abstract: 1434238 Fuel tanks BASF AG 26 July 1973 [27 July 1972] 35540/73 Heading B7H A thermoplastics fuel tank, Fig. 1, has an integral tubular projection 2 with an internal flange 11 and also a member 5, for holding parts such as a fuel contents indicator and fuel line connections 6, 7, with an external diameter within the tubular portion larger than the internal diameter of the flange 11. The member 5 has a flange 8 which is pressed against the flange 11 by a union nut 3, a washer 4 having been placed between the flanges. In a modification, Fig. 2, the portion 15 of the member 5 serves as an auxiliary container and may have a flange secured thereto or may rest on the base (16), Fig. 3 (not shown), of the tank.
Patent GB-429845-A (GB)
Title: Improvements in or relating to cases or holders for sticks or cakes of shaving soap or like preparations
IPC: A45D40/00
Filed: 1933-12-18
Abstract: 429,845. Holders for toilet preparations in stick or cake form. HOPF PRODUCTS, Ltd., 19, Great Prescott Street, London.-(Metallwerke A. Hopf Akt.-Ges.; Hopfstrasse, Tambach, Thuringia, Germany.) Dec. 18, 1933, No. 35595. [Class 18] A holder for a stick or cake of shaving soap, solid brilliantine, &c. comprises a moulded base a of artificial resin, &c. provided with an upstanding rim b<3> serving to hold the cake or stick and on to which a cover can be screwed, and with auxiliary stick retaining means integral with the base and spaced apart from the rim b<3>. The additional retaining means may comprise arcuate ribs e<1>, upstanding rings which can be screwthreaded or provided with projections or recesses, spikes, &c. The rim b<3> is formed of four arcuate sections screw-threaded externally. Ribs d<3> also serve to hold the stick, and both sets of ribs d<3>, e<1> have sharp upper edges to facilitate penetration of the soap.
Patent GB-757236-A (GB)
Title: Improved method for the manufacture of regenerated cellulose yarns by the viscose process, and yarns so produced
IPC: D01F2/06
Filed: 1953-12-22
Abstract: In the production of regenerated cellulose yarns by the viscose method in which zinc compounds are used in the coagulating bath and are carried over into the acid after-treatment bath, formaldehyde is added to the after-treatment bath in a proportion sufficient to combine with the greater part or all of the hydrogen sulphide present but not exceeding 2 mols. of formaldehyde per mol. of hydrogen sulphide.  The deposition of zinc sulphide in the after-treatment bath is thus prevented.  The composition of the after-treatment bath is checked periodically and regulated additions of formaldehyde are made.  The after-treatment bath may be at 80 DEG  C.
Patent GB-931483-A (GB)
Title: Improvements in or relating to circuit arrangements for periodically scanning measuring voltages
IPC: H03F3/72
Filed: 1961-10-05
Abstract: 931,483. Voltage measurement. PHILIPS ELECTRICAL INDUSTRIES Ltd. Oct. 5, 1961 [Oct. 8, 1960], No. 35900/61. Class 37. [Also in Groups XXXVIII, XL (b) and XL (c)] The invention provides a circuit for sequentially scanning a number of voltage sources. Each source feeds a push-pull amplifier which is gated into circuit with a common amplifier by means of a pulse distributer. In the embodiments described the sources are thermocouples and the amplifier output is distributed to a corresponding number of measuring instruments. The invention is particularly concerned to reduce the effects of leakage currents and interference voltages between the various thermocouples. To this end the push-pull stages are separated from each other, from the distributer, and from the common amplifier with respect to direct voltages. In a first embodiment, Fig. 2, thermocouples 1, 2, n are coupled to push-pull stages 11, 12, in which have common load resistors 15, 16. The voltage set up on these is amplified at 8 and distributed to instruments 21, 22, 2n. Each stage is separated from the pulse distributer, comprising bi-stable triggers 91, 92, 9n, by a pulse transformer 41, 42, 4n, and from all other stages by diodes 27, 28 and 29, 30. Transistor 31 acts as a gate. The amplitude of negative pulses fed to the junction of diodes 29, 30 is limited by Zener diode 33. Preferably silicon diodes and transistors are used. In order to maintain high insulation resistance even if a large number of thermocouples is to be scanned, the arrangement of Fig. 3 is employed. The circuitry is similar to that of Fig. 2 modified in that each push-pull stage is coupled to the common amplifier, via a mixer 60, by means of a transformer 51. Resistors 25, 26, having positive temperature coefficient, are maintained at the temperature of the corresponding transistor. Amplifier 81 feeds a clamp circuit 82 which, under the control of delayed pulses from the distributer clamps the potential at its output between successive pulses from the push-pull stages. In the arrangement of Fig. 3 transformers 41 may be inconveniently large and introduce transient voltages. To avoid this difficulty the circuit of Fig. 5 is employed. Only one stage is illustrated. The pulses from the distributer trigger 91 is fed to a monostable trigger 61, 62 which determines the length of the pulse passed to the push-pull stage. The monostable triggers of all the stages are fed from a mains transformer 72 having a secondary for each trigger, a smoothing circuit being incorporated in the circuit. The voltage across transistor 61 is maintained constant by means of Zener diode 78. Temperature variation is compensated by resistor 75 or 77 which is maintained at the same temperature as diode 78. With this circuit it is sufficient that transformers 41 transmit the front edge of each distributer pulse. The measuring instruments may respond to the surge at the front of each pulse to be measured or may integrate each entire pulse.
Patent GB-870577-A (GB)
Title: Improvements in or relating to spring suspensions in railway vehicles
Inventor: BUTTER OTTO
IPC: B61F5/32
Filed: 1958-11-10
Abstract: 870,577. Railway vehicle undercarriages. MAK MASCHINENBAU KIEL A.G. Nov. 10, 1958, No. 35997/58. Class 103(6). In a railway vehicle e.g. a diesel locomotive, each longitudinal side of the chassis 1 Fig. 1, is provided with a slide surface 17 which resiliently engages a slide member 10 carried by a cantilever beam 13 projecting from a tubular side frame 14 of the bogie and each end of each of the bogie wheel axles 22 is carried in a support 21, connected at its inner end to a bracket 23 of the bogie frame by means of a pivot 24 and at its outer end to a vertical carrier 28 rigid with the side frame 14, the carrier extending through an extension of the support 21. As shown in Figs. 2 and 3, the surface 17 is provided on the underside of a trough-shaped member 4 connected by rubber-metal spring assemblies 7, 9 and bolts 8 to transverse webs 3 supporting a top plate 2 welded to the chassis 1. The assemblies 7, 9, are very resilient in the vertical direction but have a high degree of rigidity in the horizontal direction. Disposed between the plate 2 and the member 4 are helical springs 6 retained by locating studs 5. The slide member 10 is held in a box-like guide 11 and is secured to the beam 13 by means of bolts 12, shims 16 being provided between the beam and guide. The outer side of the troughshaped member 4 is provided with a clamping rail described with reference to Fig. 4 (not shown) engaging under the guide to prevent the chassis from lifting off the bogie. Referring to Figs. 6 and 8 the vertical carrier 28 extends downwardly through an extension 19 of the axle support 21, vertical movement of the carrier relative to the extension 19 being limited by stops 18. The carrier 28 is positioned between rubber-metal disc assemblies 31, 32 carried in the extension 19 through the agency of adjusting screws 34 secured in openings in the end plates 29 of the assemblies 31, 32 and in a bore 33 in the carrier. The assemblies are - pre-compressed by removable bolts as described with reference to Fig. 9 (not shown). A helical spring 27 is positioned between the support 21 and a spring support plate 35 having grooves 36 engaging projections on a saddle 37 on the side frame 14. 'Lateral displacement of the spring is prevented by a bolt 38 engaging the plate 35. The upper end of the spring 27 engages an annular groove in the plate 35. The side frames 14 are connected together by cross tubes as described in Fig. 10 (not shown).
Patent GB-1001189-A (GB)
Title: Method for the production of shaped articles
Inventor: BLANCHARD ALLAN FREDERICK
IPC: C08J3/24
Filed: 1961-10-07
Abstract: Shaped articles made from rubber are produced by a process which comprises the steps of (1) substantially shaping the vulcanizable precursor of the rubber composition, (2) treating the "article" with an aliphatic amine or a salt thereof so that the amine diffuses into the rubber composition, and (3) vulcanizing the article.  The amines specified are diethylamine, triethylamine, n-propylamine, di-n-propyl-amine, n-butylamine, di-n-butylamine, n-amylamine, ethylenediamine, triethylene-diamine, tetramethylenediamine, pentamethy-lenediamine and hexamethylenediamine.  The amines may be applied as a solution in a volatile solvent which may also contain similar vulcanizing ingredients as the mix to avoid undue leaching.
Patent GB-891868-A (GB)
Title: Improvements in and relating to the hydrogenation of coal
Inventor: HOWELL JOHN HANCOCK
IPC: C10G1/06
Filed: 1959-10-27
Abstract: Coal is hydrogenated by pasting with an oil to form a paste containing 10-80% by weight of coal, forming a multi-phase mixture with hydrogen at 2,500-12,000 p.s.i.g., heating to at least 495 DEG C. and causing intimate contact of the gas and liquid phases to permit a reaction rate of at least 150 pounds of coal reacted per cubic foot of reactor volume per hour.  The pasting oil is preferably product boiling between 330 DEG C. at atmospheric pressure and 350 DEG C. at 5-50 mm. mercury.  A catalyst may be added, e.g. nickel, tin, iron, lead and their derivatives.  Temperature may be 500 DEG -600 DEG C. and hydrogen consumption 0,01-0,07 pound per pound of coal introduced.  Intimate mixing is necessary, e.g. by maintaining turbulent flow at 3-80 feet per second or using an agitated reactor. Tubular reactors may comprise several vertical pipes with heating jackets, the downward pipes having 25 to 75% smaller diameter to minimise film formation on the walls.
Patent GB-1404019-A (GB)
Title: Control system for adjusting speed of ac motor
IPC: G05D13/62
Filed: 1972-08-04
Abstract: 1404019 Control of A.C. motors; frequency changing BORG-WARNER CORP 4 Aug 1972 [25 Aug 1971] 36513/72 Headings H2J and H2F The speed of an A.C. motor is controlled by selectively varying the periods for which power is supplied in each polarity by counting supply half-cycles. The voltage is additionally controlled by gating an electronic switch at a variable point in each half-cycle. As shown, a motor 11 is connected to a supply 12 by way of a bi-directional switch, such as a pair of thyristors SCR1, SCR2, a triac, or transistors. The supply voltage is also passed by a bridge rectifier 14 and Zener diode 78 to a frequency control circuit 20 including a timing circuit 92, 42 and unijunction transistor UJT1 which supplies pulses to a multivibrator 19 including thyristors SCR3, SCR4 and thus determines the output frequency by biasing diodes 65, 66 in a gating circuit 22 connected to the switch SOR1, SCR2. A further thyristor SCR5 in the circuit 20 synchronizes the charging of capacitor 42 with the supply signal. A voltage control circuit 21 including a capacitor 75 and unijunction transistor UJT2 supplies pulses to gating circuit 22 to control the firing angle within the half cycles of the supply determined by the multivibrator 19. A further circuit, including a thyristor (S1) and silicon unidirectional switch (S2), Fig. 7 (not shown), may be provided to ensure starting of the supply circuit in the desired switching mode.
Patent GB-961387-A (GB)
Title: Process for the preparation of 2-cyano-4-nitrostilbenes
IPC: C07C255/49
Filed: 1962-09-26
Abstract: 2-Cyano-4-nitrostilbenes are prepared by condensing 2-cyano-4-nitrotoluene with an aromatic aldehyde in the presence of hexamethylene imine as catalyst.  The reaction may be carried out in the presence of a solvent at 50 DEG  to 150 DEG C. for 3 to 10 hours. The catalyst is preferably employed in an amount of from 0.035 mol. to 0.1 mol. per mol. of 2-cyano-4-nitrotoluene. Examples describe the preparation of 4-nitro-2-cyanostilbene, 41-chloro-4-nitro-2-cyanostilbene, 21-methyl-4-nitro-2-cyano-stilbene and 41-methoxy-4-nitro-2-cyanostilbene.
Patent GB-915131-A (GB)
Title: Improvements in or relating to devices for producing a train of electrical pulses
IPC: G11C19/06
Filed: 1959-10-28
Abstract: 915,131. Magnetic pulse generating circuits. PHILIPS ELECTRICAL INDUSTRIES Ltd. Oct. 28, 1959 [Oct. 31, 1958], No. 36573/59. Class 40 (9). A train of electrical pulses is produced by a magnetic core M having a rectangular hysteresis characteristic and provided with a control aperture A and a series of auxiliary apertures B-J spaced progressively at increasing distance from the control aperture, the core being first brought to an initial magnetic state by a current in a conductor S, and then having its magnetic state reversed progressively from the control aperture outwards by a sawtooth control current in winding S of opposite polarity, the reversals of flux in the core material between the apertures producing spaced output pulses in windings W1-W1O. Separate windings for the current establishing the initial state and the control current from a sawtooth generator ZG may alternatively be provided. One or more of the output pulses in the train may be suppressed by applying a flux reversing current to the winding W1-W10 concerned, a local reversal of flux being then produced in the core material between selected apertures before the sawtooth control current is applied. Certain of the core windings W1-W10 may be connected to bias potentials so as to delay or advance the production of certain pulses. The device may be used to produce a pulse-time-code by connecting selected windings in series aiding or opposing relationship. Circular apertures may be used, or alternatively they may be elliptical or rectangular. They may be optionally positioned on a helical path to reduce the time spacing between successive pulses. A matrix of devices M11-M23 is shown in Fig. 4 in which the control current winding BG is connected to a bias source BA which suppresses the flux reversal action of the sawtooth control current. Each core has an associated column and row winding V1-V3, H1, H2 which when selectively energized in coincidence overcome the bias action on the core. This permits the sawtooth current to reverse the core flux and so generate spaced output pulses. Each core is enabled to generate an output pulse series in turn by sequentially energizing each column winding over a counter TS1 and energizing each row winding in turn for the duration of a column cycle over a counter TS2, both counters being driven by the source of sawtooth current Z.
Patent GB-1016317-A (GB)
Title: Heating and/or ventilating apparatus
IPC: F28D1/02
Filed: 1963-09-18
Abstract: 1,016,317. Ventilating and air conditioning units. J. J. FORTIN. Sept. 18, 1963, No. 36747/63. Heading F4V. An induction-type heating and ventilation unit comprises an outer casing 10 having an open bottom, elongated heating elements 18 and 20 and a fresh air duct 24 having a horizontal row of ejection orifices 28. Air is supplied to the duct 24 from an aperture in an external wall 26 by fans 30 located in a compartment at one end of the casing, Figs. 1 and 3 (not shown). The heaters may be hot water pipes or electric elements and may be thermostatically controlled. The orifices 28 are formed by bending back tabs 29 from the fresh air duct wall. The fan motor may be of variable speed.