baber/WOPTO huggingface dataset:
Patent GB-1427780-A (GB)
Title: Reaction cell
IPC: G01N25/48
Filed: 1973-07-17
Abstract: 1427780 Reaction cell BAXTER LABORATORIES Inc 17 July 1973 [11 Sept 1972] 33944/73 Heading G1B An apparatus for measuring a change in temperature of a reaction product from an equilibrium temperature of its constituents incident to an intermixing of at least two of the reacting constituents comprises an enthalpimeter 22 having an outer housing 24 of cylindrical construction, a titrant temperature equilibrium block 26, a core member 28 and a plate for closing one end thereof. The equilibrium block 26 is formed to provide a pair of cavities 34 and 36, coaxial with one another and the longitudinal axis of the block itself. The core member provides an axial bore 70 and a plurality of bores 72 disposed in quadrature thereabout, each bore being in communication with the chamber 34. The central bore accommodates a rod 74 which is supported by a sleeve 76. The rod 74 is adapted to rotate within the bore and a stirrer is mounted on the rod. The remaining bores 72 may accommodate, for example, a heater, a temperature-responsive member such as a thermistor or a pH probe or may serve as inlets for various test gases. Additional longitudinal bores 96 are in communication with helical grooves 58 forming a pair of titrant delivery paths. Individual tubes 98 are wound within the two groove paths and extend from titrant reservoirs 102 to cup 90. The apparatus may be used for evaluating serological and immunological reactions.
Patent GB-997320-A (GB)
Title: A.c. amplifiers employing transistors
Inventor: BANASIEWICZ HENRYK
IPC: H03F1/56
Filed: 1962-09-05
Abstract: 997,320. Transistor amplifiers. JOSEPH LUCAS (INDUSTRIES) Ltd. Oct. 18, 1963 [Sept. 5, 1962], No. 33982/62. Heading H3T. In a three-stage transistor amplifier having a high input impedance, the first two stages are constituted by emitter followers 11, 15 and the stabilized base-bias current for the first transistor 11 is derived from the collector circuit of the third transistor 17 and applied to the base of the first transistor through the emittercollector path of a fourth transistor 24 whose base electrode is earthed for alternating currents through capacitor 27. The transistor 24 has a high output impedance and hence does not significantly reduce the high input impedance presented by the two emitter-follower stages. The resistor 23 permits an initial adjustment of the feedback to be made. The emitter circuit of the output common-emitter transistor 17 includes a Zener diode 21. Additional stabilization is provided by a further Zener diode 29 connected between the emitter of transistor 17 and the collectors of transistors 11 and 15.
Patent GB-1097724-A (GB)
Title: Improvements in or relating to pyridinium salts
IPC: C07D213/82
Filed: 1965-01-28
Abstract: Compounds of the formula <FORM:1097724/C2/1> wherein A and B are chosen from hydrogen, carboxamido, acetyl and carbomethoxy, at least one of A and B being other than hydrogen, and X- is an anion may be obtained by reacting a compound of the formula <FORM:1097724/C2/2> with a propargyl derivative of the formula HC­C-CH2X and the reaction may be effected in an inert solvent.  The anion X- may be a halide anion, preferably bromide, and it may be converted to other anions, e.g. acetate, sulphate, perchlorate or methosulphate by reaction of the pyridinium derivative with the silver salt of the desired anion.
Patent GB-762743-A (GB)
Title: Circuit-arrangement for frequency-transformation of oscillations of very high frequency
IPC: H04B15/06
Filed: 1954-11-25
Abstract: 762,743. Superheterodyne circuits. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Nov. 25, 1954 [Nov. 28, 1953], No. 34195/54. Classes 40(5) and 40(6) In a self-oscillating frequency changer the input signal is coupled by a coupling coil L1 into a tuned input circuit including inductance L2. The inductance L2 is connected to a centre-tap on the inductance L3 of the local oscillator circuit, which also comprises a split-stator variable condenser C4, C5, the centre of which is earthed. Oscillations are produced by means of a coupling coil L4 in series with a blocking condenser C8 which forms a tuning capacity for the primary L5 of an I.F. transformer. Shunt and series padding condensers C6, 7 respectively allow of adjustment of the balance of the local oscillator circuit so as to minimize radiation over the tuning range. The input circuit L2 is provided with series and shunt tracking condensers C2, C3 respectively and is tuned by the effective capacity thrown across it by the oscillator circuit L3, C4-7. Regeneration at I.F. is provided by means of a resistor R in the anode circuit and a coupling condenser C1 which is in series with the input circuit of the valve.
Patent GB-971608-A (GB)
Title: 17ª-methyl steroids and their production and use
IPC: C07J75/00
Filed: 1962-09-06
Abstract: The invention comprises 6 (a  and b )-dimethylprogesterone, 6, 17a -dimethyl-4, 6-pregnadiene-3, 20-dione, 5a -hydroxy-6b , 17a -dimethylpregnane-3, 20-dione, 3b , 5a -dihydroxy-6b , 17a -dimethylpregnan-20-one, 3b -hydroxy-5a , 6a -epoxy-17a -methyl-etianic acid lower alkyl ester, 17a ,20-dimethyl-20-hydroxy-4-pregnen-3-one and 6a , 17a , 20-trimethyl-20-hydroxy-4-pregnen-3-one, and a process for the preparation of 17a -methyl-20-keto-steroids of the pregnane series by reacting methyl magnesium halide (preferably a molar excess of said methyl magnesium halide) with a 17a -methyl-etianic or 17a -methyl-etienic lower alkyl ester in an inert medium at substantially 50 DEG C. to 200 DEG C., for example the reactants may be mixed at a temperature below 50 DEG C. and then heated to substantially 50-200 DEG C. By this method 17a -methyl-pregnenolone is prepared from methyl 3b -hydroxy-17a -methyl-D 5-etienate and may be converted to the corresponding 3 - acetate or oxidized by the Oppenauer reaction to form 17a -methyl-progesterone (3b , 20-dihydroxy-D 5-bisnorcholane is formed as a by-product in the main reaction), and 3b , 5a -dihydroxy-6b , 17a -dimethyl-pregnane-20-one is prepared from 3b -hydroxy-5a , 6a -epoxy-17a -methyl-etianic acid methyl ester (3b , 5a , 20-trihydroxy-6b , 17a , 20-trimethyl-pregnane is formed as a by-product).  The invention also includes a process for preparing 3b -hydroxy-5a , 6a -epoxy-17a -methyl-etianic acid lower alkyl ester by treating 3b -hydroxy-17a -methyl-5-etienic acid lower alkyl ester such as the methyl ester with an epoxidizing agent such as peracetic acid, a process for preparing 5a -hydroxy-6b , 17a -dimethyl-pregnane-3, 20-dione by oxidizing the corresponding 3b -hydroxy compound, for example with an oxidizing agent having a hexavalent chromium ion, a process for producing 6, 17a -dimethyl-4, 6-pregnadiene-3, 20-dione which comprises reducing 6 (a  or b ), 17a -dimethylprogesterone with chloranil, a process for the preparation of 6 (a  and b ), 17a -dimethylprogesterone by reacting 5a -hydroxy-6b , 17a -dimethylpregnane-3, 20-dione with a dehydrating agent in basic or acidic medium (for the 6b -methyl compound thionyl chloride in pyridine solution may be used and for the 6a -methyl compound, a metal hydroxide or a strong acid may be used). Pharmaceutical compositions having a progestational activity and which may be administered orally or by injection contain as the active ingredient 6 (a  or b ), 17a -dimethylprogesterone, 6, 17a -dimethyl-4, 6-pregnadiene-3, 20-dione, 17a , 20-dimethyl-20-hydroxy-4-pregnen-3-one or 6a , 17a , 20-trimethyl-20-hydroxy-4-pregnen-3-one.
Patent GB-1380694-A (GB)
Title: Control apparatus
IPC: B62D11/18
Filed: 1971-12-06
Abstract: 1380694 Hydrostatic transmission control INTERNATIONAL HARVESTER CO 6 Dec 1971 [14 Dec 1970] 34259/74 Divided out of 1380693 Heading F2D [Also in Division G3] The subject matter of this Specification is identical with that described in Specification 1,380,693, but the claims are directed to the elongate control valves.
Patent GB-733996-A (GB)
Title: Process for the production of synthetic resin-like polymerisation products
IPC: C08F24/00
Filed: 1953-12-11
Abstract: Polymers are made by polymerizing, e.g. in in bulk or solution, a monomeric condensation product of an alpha, beta-unsaturated aldehyde and a saturated aliphatic alcohol having a carbon atom to which at least two free methylol groups are directly attached, in the presence of a polymerization catalyst and, optionally, another monomer.  In a modification the condensation product may be polymerized in the presence of one type of catalyst and then another monomer added and further polymerization effected, if desired utilizing another type of catalyst.  The polymerization may also be effected in the presence of natural resins, drying oils or modified drying oils.  Acrolein is the specified aldehyde, glycerol and pentaerythritol specified alcohols and diallylidene pentaerythritol the exemplified condensation product.  In solution polymerization the solvent may be xylol.  Other monomers mentioned are styrene, maleic acid, vinyl acetate, diallyl phthalate and mixtures.  The catalyst may be azo-isobutyric nitrile, salts of diazotized p-nitroaniline or 6-benzoyl-amino-4-methoxy - N - toluidine, diazo - thioethers such as 4 - methyl - benzene - diazo - mercapto - 2-naphthalene, boron trifluoride ethoxide, benzoyl peroxide and t-amines, and benzoyl peroxide-iron-acetyl acetonate. The polymers may be moulded under pressure, used for varnishes or adhesives, or manufactured into artificial leather.
Patent GB-638907-A (GB)
Title: Improvements in or relating to electro-mechanical devices having a slow-acting feature
IPC: H04Q1/32
Filed: 1946-11-21
Abstract: 638,907. Electromagnetic relays. RUDEFORTH, S. Nov. 21, 1946, No. 34591. [Class 38 (v)] [Also in Group XXXIX] A relay C, which is energized by impulses over its left-hand coil and is made slow to release by the short-circuiting of its right-hand coil, has the short-circuit broken during the energizing period of the left-hand coil in order to assist the build-up of its magnetic flux, the short-circuit being broken by a contact a<SP>2</SP> synchronized with the impulsing contact a<SP>1</SP>.
Patent GB-521930-A (GB)
Title: Flexible stand or support
IPC: F16B7/02
Filed: 1938-11-28
Abstract: 521,930. Stands; brackets. SEIBAEK, A. K. Nov. 28, 1938, No. 34632. [Classes 52 (iii) and 52 (v)] A stand such as for an electric light comprises a flexible pedestal constructed by a series of tubes connected together by ball and socket joints and a spring inserted in the tubes and abutting against abutments in the end tubes. One end of each tube 1 is provided with a spherical enlargement 2 while the other end is formed in a series of flaps 3 shaped to co-act with the spherical enlargement of the adjacent tube. Slots are formed between the flaps and into one of these slots a projection on the interior 'face of the enlargement may enter to prevent relative rotation of the tubes. A spring 8 is arranged to abut against abutment faces 9, 10 as shown and the spring may be of decreasing stiffness. As a bracket the tubes 1 may be horizontal and arranged in a tube 13 mounted in a holder 14 by means of a spring 18 and a pin and slot 19. The bracket may be arranged as a lamp or as a holder for a hose for a tool cutting machine.
Patent GB-767241-A (GB)
Title: Rate of flow measuring devices for fluids
IPC: G01F1/22
Filed: 1954-11-30
Abstract: 767,241. Rotary meters. BENDIX AVIATION CORPORATION. Nov. 30, 1954 [Dec. 1, 1953; June 10, 1954], No. 34688/54. Class 110 (2). [Also in Group XXIX] A fluid flow measuring device, in which a rotatable member is driven by the fluid flow in proportion to the rate of fluid flow, includes an arrangement whereby the change in angular position of the member per unit change in rate of flow is automatically altered from one value to another as the rate of flow changes from one range to another. In the form shown in Fig. 5 a spring-biased vane 22 is rotatable about a shaft 21 in a chamber 18 having an inlet port 19 and an exit port 20 for the fluid. The internal surface of the chamber is formed as two contoured surfaces 28, 29 with a step bd between them so that the change in angular position of the vane 22 per unit change in the rate of flow is larger over the surface 28 than over the surface 29. The shaft 21 is connected to a pointer via a magnetic coupling and an electric remote indicating system. A spring-loaded circular disc 63, hinged at 64, is mounted within a by-pass passage in the flow meter to prevent abnormal pressure build-up, and an aperture 72, Fig. 15b, in the disc which may be obturated by a cover member 74 attached to a spiral bimetallic element 73 provides a temperature correction means. The chamber may also be contoured to provide a clearance of increasing width between the vane and the internal surface of the chamber, or the vane and the side of the chamber, and either of these forms may be combined with the radially increasing clearance between the vane and the internal surface of the chamber. The temperature correction means may also be replaced by a device to adjust the radial position or the force of the vane-biasing spring according to the fluid temperature. The invention is also applicable to turbine-type flowmeters. Specifications 503,422, 565,277 and 717,897, [all in Group XXXVIII], are referred to.
Patent GB-906406-A (GB)
Title: Improvements in or relating to television cameras
Inventor: WATERS IAN MORLEY
IPC: G21F7/02
Filed: 1958-10-30
Abstract: 906,406. Television. PYE Ltd. Oct. 29, 1959 [Oct. 30, 1958], No. 34831/58. Drawings to Specification. Class 40 (3). [Also in Group XL (a)] A television camera intended for use inside an operating nuclear reactor is constructed of materials and components of which substantially all have: (a) a sufficient resistance to damage by radiation to permit a reasonable operating life, (b) a low magnitude of induced radio-activity and a short half-life (less than 24 hours is specified) in order that a faulty camera may be repaired with safety in a reaonable time after withdrawal from the reactor, and (c) a small neutron-absorbing cross-section (less than 0.25 barns is specified) to avoid the camera having undue controlling effect on the functioning of the reactor. The following components and materials are preferred. For parts requiring structural strength: aluminium. For the camera casing: aluminium or stainless steel. For structural parts requiring insulating properties: ceramics. For coil formers: ceramics, material known under Registered Trade Mark " Tufnol," aluminium with its surface anodized. For camera lenses: stabilized glass substantially boron-free. For the end face of the pick-up tube: fused quartz glass, synthetic sapphire, stabilized glass. For the pick-up tube envelope: crown glass substantially boron-free. Amplifier valve envelopes: metal, or glass which is boron-free. Resistors: nickel - chrome wire wound on a ceramic former, metal film on fibreglass wound on a ceramic former. Wire for coils and connections: aluminium anodized to provide an insulating surface. Solder: aluminium. Non-electrolytic capacitors: capacitors having aluminium electrodes and paper, mica or ceramic dielectrics. Electrolytic capacitors: capacitors having tantalum electrodes and embedded in an epoxy resin where they incorporate a gasket of polytetrafluorethylene. For flexible seals: silicon-based synthetic rubber. For insulating sleeving: silica fibre or polythene. For electric lamp envelopes: quartz or stabilized glass. For electric lamp caps: aluminium. The Specification includes a detailed camera construction, Figs. 1-3 (not shown), in which an assembly of a lens, a pick-up tube and a twostage resistance-coupled head amplifier are contained in a cylindrical container constructed as a plug-in unit which may be readily detached from a housing. The housing is constructed as a labyrinth of annular chambers through which a cooling gas is circulated, the gas being fed to and returned from the housing by hoses incorporated in a common assembly with electric connections to the camera and lifting wires by which the housing may be lowered into the reactor. A detailed circuit for the camera is given, Fig. 4 (not shown).
Patent GB-211293-A (GB)
Title: Improvements in or relating to lehr conveyors
IPC: C03B25/06
Filed: 1922-12-21
Abstract: 211,293. Wade, H., (Dixon Co., H. L.). Dec. 21, 1922. Charges, conveyang. - In conveyers for very wide leers the pans, to prevent sagging, are formed in sections 3, 4 having their ends connected to endless chains 5, 6, 7. The pans are connected to the flanges 10 of the chains by screwbolts 11 and nuts 14, the heads of the bolts being seated in countersunk depressions 12 in the pans and the parts 12 loosely fitted in conical holes 13, to permit relative movement between the sections of each pan to compensate for variations in the lengths of the chains.
Patent GB-864470-A (GB)
Title: Improvements relating to the feeding and distribution of flowing materials to tanks and the like
Inventor: SHAW FRANCIS JAMES
IPC: F16K11/085
Filed: 1958-10-31
Abstract: 864,470. Valves. HARTLEYS (STOKEON-TRENT) Ltd. Oct. 28, 1959 [Oct. 31, 1958], No. 34944/58. Class 135. [Also in Group I] A number of sludge inlet pipes 11, 12, 13 and 14, radially arranged 90 degrees apart are connected to a cylindrical housing 15, from which four outlets from the housing 15 are similarly set 90 degrees apart round the cylindrical wall of the housing. The incoming flow enters the housing through a single inlet pipe 16, in one end of the housing. A spindle 17 extends axially through the opposite end of the housing and is carried in a bearing 18 fitted with suitable packing material 19, and an end collar 20. The projecting end of the spindle is fitted with a pulley 21 or other driving member operated by a belt or V-rope or some other means from a reduction gear and small electric motor or other prime mover not shown in the Figures. Within the housing a valve member 25 is mounted on the spindle and is a close working fit in the housing. The valve member 25 has a passage 26 in one end which is permanently open to the inlet flow from the pipe 16. It also has an opening in its periphery communicating with each of the several pipes 11, 12, 13 and 14 in turn in the cylindrical wall of the housing. As shown in Fig. 3 the valve has its peripheral opening 27 almost fully in register with the pipe 14 and it will begin to uncover the pipe 12 before the pipe 14 is shut off. The speed of rotation of the valve member is very slow, possibly of the order of one revolution in half an hour.
Patent GB-881760-A (GB)
Title: Improvements relating to the treatment of cellulosic textile materials
Inventor: KRUG PAVEL
IPC: D06M13/432
Filed: 1958-10-31
Abstract: Cellulose materials in the form of textile fabrics, yarns or threads are treated, so as to convert at least part of the cellulose into cellulose derivatives, by reacting the cellulose with a compound containing a reactive halogen atom in the presence of a substance which at room temperature has a neutral or slightly acidic reaction but which provides alkalinity on heating to the reaction temperature. The alkali-producing substance may be a reaction product of an alkali metal sulphite with a compound showing an aldehyde reaction only at a raised temperature, e.g. 80-140 DEG C.  Suitable alkali-producing substances include the reaction product of an alkali metal sulphite either with the dimethylol derivative of the reaction product from one mole of urea and one mole of glyoxal, or with a methylol derivative having a cyclic-ureido or thio-ureido or imino-ureido structure, e.g. tetramethylol glycoluril.  The halogen compound may have one of the formulae:-R(CO)Hal, R(CS)Hal, R(SO2)Hal, or R(CH2)Hal, where R is a substituted or unsubstituted alkyl or aryl group.  Specified halogen compounds include benzyl chloride and stearoyl chloride.ALSO:Cellulose textile materials are printed with a paste containing a compound having a reactive halogen atom and a substance which has a neutral or slightly acid reaction at room temperature but which provides alkalinity on heating to the reaction temperature, so as to convert at least part of the cellulose into cellulose derivatives, and are subsequently dyed.  The alkali-producing substance may be a reaction product of an alkali metal sulphite with a compound showing an aldehyde reaction only at a raised temperature, e.g. 80 DEG C-140 DEG C.  Suitable alkali-producing substances include the reaction product of an alkali metal sulphite either with the dimethylol derivative of the reaction product from one mole of urea and one mole of glyoxal, or with a methylol derivative having a cyclic-ureido or thio-ureido or imino-ureido structure, e.g. tetramethylol glycoluril.  The halogen compound may have one of the formulae: R(CO)Hal, R(CS)Hal, R(SO2)Hal, or R(CH2)Hal, where R is a substituted or unsubstituted alkyl or aryl group.  Specified halogen compounds include benzyl chloride and stearoyl chloride.  Subsequent immersion in a solution of a direct cotton dyestuff and treatment at elevated temperatures results in the printed areas remaining substantially undyed.  Alternatively, immersion in a dispersion of a dispersed acetate dyestuff results in colouring of the printed areas.  Treatment of the textile material in a bath containing a mixture of a direct cotton dyestuff and a dispersed dyestuff enables a two-colour effect to be obtained.
Patent GB-385423-A (GB)
Title: Improvements in roller cages of roller bearings
IPC: F16C33/54
Filed: 1931-12-19
Abstract: 385,423. Roller bearings. ALLEN & SONS (TIPTON), Ltd., W. G. and JONES, W. H., Princes End, Tipton, Staffordshire. Dec. 19, 1931, No. 35163. [Class 12 (i).] In a roller-bearing spacing-cage comprising end rings a and spacing bars c, the latter have angular cross-sectioned shanks c<2> welded within the correspondingly shaped piercings in which they are received in the rings a. The inner side-faces of the rings a may have grooves a<3> to receive the ends of the body part of the bars c.