baber/WOPTO huggingface dataset:
Patent GB-598422-A (GB)
Title: Improvements relating to fire-extinguishing installations
IPC: A62C3/06
Filed: 1945-09-03
Abstract: 598,422. Fire-extinguishing. PYRENE CO., Ltd., and BEDFORD, H. E. Sept. 3, 1945, No. 22633. [Class 47 (ii)] A movable section is fitted between a foamsupply pipe and a delivery device for directing foam into an oi1 tank or other container of highly-inflammable material, so as normally to complete the foam passage but which, when a test is to be carried out, can be readily moved to open the foam passage so that foam issuing from the supply pipe is directed away from the delivery device. In the testing position the foam is preferably positively directed away from the tank by the movable section, and a vapour seal which is normally fitted at or near the end of the delivery device is exposed to view for inspection. In a preferred construction, Figs. 1, 3, the movable section comprises a hook-like member 21 disposed above a foamsupply pipe 20 and in its normal position serves to direct foam laterally of the inlet of the delivery device 11. A vapour seal in the form of a frangible membrane 22 is stretched across the delivery device 11 just below its inlet end. When a test is to be carried out, securing bolts (not shown), by which the member 21 is fixed in normal position to plates 16, 23 are removed and, with the assistance of a handle 28, the member 21 is turned through a right angle about a spigot 26 formed by the upper end of the supply pipe 18 to expose the seal 22. In a modification, the hood-like member is made in two sections, the flanges of which are normally bolted together, but for testing purposes the sections are hinged upwards about their outer ends, after the securing bolts have been removed. In a further modification, the hood-like member is in one piece capable of being turned on a hinge along its longer side remote from the tank into testing position when the securing bolts are undone, while in a further modification the hood-like member is arranged to slide laterally for testing purposes. The piping 18 and supply device 11 in all cases form a unitary structure adapted to be secured both to a tank and to the upper end of a supply pipe.
Patent GB-428572-A (GB)
Title: Clock-dial
IPC: G04B19/30
Filed: 1934-08-03
Abstract: 428,572. Clocks. GROBETY, L. H. E., 1, Rue Descartes, Asnieres, France. Aug. 3, 1934, No. 22702. Convention date, Aug. 3, 1933. [Class 139] The hands 9, 9<1>, divisions 5, and numerals 51 are illuminated by light from a series of lamps 1 disposed around the spindles of the hands, while the base 7 of the dial remains obscure. Screens 2, 3 form a cylindrical slit 4 which constricts the light rays to a narrow beam impinging obliquely on the divisions and numerals, which are secured to the dial base 7 by supports 8, the divisions 5 comprising projections on a ring 6. The hands are bent, as shown, to the same inclination as the numerals 5<1> and illuminated by rays passing through slots 10, 10<1> therein, while a series of concentric partitions 11 are provided on the base 7 to prevent the rays illuminating it. Preferably, the divisions, numerals and hands are coated with a light paint or enamel and the base and partitions with a dark coloured paint or enamel.
Patent GB-1044977-A (GB)
Title: Improvements in or relating to the production of acid anhydrides
IPC: C07C51/56
Filed: 1963-06-07
Abstract: Monobasic carboxylic acid anhydrides are prepared by the reaction of equimolar quantities of an acyl halide, ROhal, and an alkali metal salt or ammonium salt of a monobasic acid, R1COOH, wherein R and R1 may be the same or different and represent either a substituted or unsubstituted aryl radical or an alkyl radical containing at least 11 carbon atoms, in an aqueous medium in the presence of a tertiary base as catalyst and at ambient temperatures and pressures and separating the resulting solid anhydride from the liquid reaction mixture. Suitable starting materials are the acyl derivatives and salts of benzoic acid which may be substituted in the nucleus by, e.g., nitro-groups, halogen atoms or C1-C5 alkyl groups. Suitable aliphatic reactants are the appropriate derivatives of lauric and palmitic acids.  The catalyst may be a trialkylamine, e.g. triethylamine, or a pyridine, e.g. 3-aminopyridine, picolines, lutidines or colidines. Examples describe the preparation of (1), (4), (5) and (5A) benzoic anhydride, (2) toluic anhydride, (3) 3: 5-dinitrobenzoic anhydride, (6) o - chlorobenzoic anhydride, (7) lauroyl anhydride and (8) palmitic anhydride.
Patent GB-944685-A (GB)
Title: Preparation of melamine
Filed: 1962-06-13
Abstract: A continuous process for the production of melamine comprises heating urea in the presence of ammonia in a fluidised bed of inert solid particles so that the urea decomposes and passing the resulting gases together with the ammonia gas through one or more catalyst beds, thus forming melamine.  The catalyst is preferably in a fluidised state. Specified inert solids are sand, carborandum and corundum. Examples are given, using as catalysts (1) silica gel grains and (2) aluminum phosphate.  Specification 910,197 is referred to.
Patent GB-598460-A (GB)
Title: Improvements in padlocks
IPC: E05B67/02
Filed: 1945-09-05
Abstract: 598,460. Padlocks. ROBINSON, G. C., and JONES, T. Sept. 5, 1945, No. 22809. [Class 44] In a padlock of the kind having a cover plate 17, Fig. 1, hinged to the body 10 for enclosing a paper seal covering the key hole 14, and retained closed by the hasp 11, the hinge pin 21, Fig. 2, by which the cover plate is attached to the body of the padlock has one end enclosed by one of the hinge lugs 18, so that the pin cannot be driven out. That part of the pin 21 which engages in the lug 19 may be slightly flattened at one point so as to be a tight fit therein, and the lug 19 extends to or beyond the end of the pin.
Patent GB-184386-A (GB)
Title: Improvements in apparatus for cross-winding cops in spinning mules
IPC: D01H3/24
Filed: 1921-08-29
Abstract: 184,386. Golland, H. S. Aug. 29, 1921. Mules.-In an arrangement of the kind described in Specification 1470/14 for producing cross-wound cops in mules, the toothed quadrant bracket g<5>, Fig 1, which is loose on the faller shaft d is supported by an attached extension bracket a and cap c embracing the counter faller shaft b. The extension a may be integral with the bracket g<5> and a single cap be provided to embrace both the Faller shafts. The arms h, Fig. 4, which carry the guide wire are mounted on the faller shaft d and prevented from binding thereon by means of compound ball bearing which permits free rotation about the shaft and takes the end thrust. Three sets of balls are provided separated by washers k<2> and held in place by washers k<1> and end plates m. The whole is held against a conical ring n - and collar o. According to the Provisional Specification the bracket g<5> may be adjustable relatively to the bracket a.
Patent GB-246065-A (GB)
Title: Improvements in or relating to the composition of bituminous mixtures for use in road construction and the like
IPC: C08L95/00
Filed: 1925-04-04
Abstract: 246,065. Universal Rubber Paviors (Manchester 1923), Ltd., and Brown, A. E. April 4, 1925. Addition to 246,186. Compositions containing bituminous &c. materials, clay, and rubber, &c.-The adhesiveness of the product described in the parent Specification is increased by the addition thereto of residual products of the manufacture of gutta percha known as gutta percha pitch, or those of balata, or low grade rubbers as pontanac, palembang, accra. Suitable proportions are 8 per cent of gutta percha pitch and 92 per cent of the composition described in the parent Specification.
Patent GB-1005976-A (GB)
Title: Printed circuit board
IPC: H05K1/11
Filed: 1963-06-07
Abstract: 1,005,976. Printed circuits. UNITED-CARR FASTENER Inc. June 7, 1963 [June 20, 1962], No. 22879/62. Heading H1R. [Also in Division H2] The foil 2 of a printed circuit board is punched with apertures 3 to leave portions 4 which connect the two sides when they are folded over an insulating board, Fig. 1 (not shown) having a series of tongues which project through the apertures. The tongues reduce wear when the board is inserted in a connector (see Division H2). The board may be tubular.
Patent GB-1279178-A (GB)
Title: A device for automatically tuning a radio receiver
IPC: H03J7/30
Filed: 1970-05-12
Abstract: 1279178 Radio receiving circuits PIONEER ELECTRONIC CORP 12 May 1970 [13 May 1969 (5)] 22964/70 Heading H3Q In a stop on signal receiver tuning is effected by an electric motor under control of a differential amplifier which determines its direction of rotation as preselected by means of a manual control; upon interception of a signal, fine tuning means generating an S-shaped curve when tuning through the signal frequency is automatically switched to the input of the differential amplifier so as to take control of the timing motor and tune the receiver to a null point. Tuning motor M is connected, in parallel with lamps L3, L4 each in series with a corresponding diode D6, D7 to indicate the direction of rotation, across the output of a differential amplifier comprising transistors Tr8, Tr10 and Tr9, Tr11; this amplifier includes preliminary stages Tr6, Tr12 and Tr7, Tr13 respectively, points marked X being joined together. The direction of rotation of motor M is determined by operation of manual switch SW3 in parallel with which is remote control switch SW5; according as contact SW3a (or SW5a) or alternatively contact SW3b (or SW5b) is closed, diodes D1, D2 or alternatively D3, D4 are biased conductive, respectively rendering conductive transistors Tr1 and Tr3 or alternatively, Tr2 and Tr3. Transistors Tr1 and Tr2 form a first bi-stable circuit J and transistors Tr3 and Tr4 form a second bi-stable circuit C. In either position to which switch SW3 (or SW5) is moved, the rendering of transistor Tr3 conductive renders transistor Tr4 non-conductive, whereby diode D5 becomes conductive to charge capacitor C1; when charged, this renders transistor Tr5 conductive to bring into conduction transistors Tr6-11 of the differential amplifier. Rotation of motor M then occurs, the direction depending upon whether transistor Tr1 or Tr2 is conductive thereby rendering transistor Tr6 or Tr7 conductive. When, during tuning, a signal is intercepted, Schmitt trigger circuit D is operated to pass a negative-going pulse over capacitor C2 to the base of transistor Tr3 which is thereby cut off, transistor Tr4 becoming conductive, thereby rendering diode D5 non-conductive and transistors Tr1, Tr2 inoperative. At the same time transistors Tr12, Tr13 are biased conductive, so that control of the differential amplifier B is taken over either by an A.M. discriminator A coupled to the A.M.I.F. amplifier, if switch SW1 is in position SW1a, or by the F.M. discriminator of the receiver (not shown) if switch SW is in position SW1b. Threshold circuits may be switched in before the Schmitt trigger circuit D so that tuning is only interrupted for strong signals. Alternatively in a stereo receiver switch SW2 may be reversed and the control pulse derived from stereo generating circuit E, so that tuning is only interrupted on stations carrying stereo signals. A muting circuit F may be coupled to the collector of transistor Tr4 so that the audio circuits of the receiver are only operative when a signal is tuned in.
Patent GB-1069754-A (GB)
Title: Improvements in apparatus for x-ray analysis of a material
IPC: G01N23/223
Filed: 1964-06-03
Abstract: 1,069,754. Photo-electric X-ray analysis. J. BAECKLUND. June 3, 1964 [June 7, 1963], No. 23010/64. Heading G1A. [Also in Division H5] In apparatus for the analysis of a specimen by X-rays, a filter 2 (Fig. 1) is interposed between the X-ray tube 1 and the specimen 3, the filter having a high absorptivity within a range of wavelengths containing a definite wavelength to be considered, and a low absorptivity at shorter wavelengths. When the specimen is to be analyzed to determine the concentration of a particular constituent element, some of the primary radiation from the X-ray tube anode is scattered from the sample and forms a background specimen on which the characteristic fluorescent radiation of the sample is superimposed. If the particular wavelength of the constituent to be considered coincides with the characteristic lines of the X-ray source, the accuracy of the measurements will be affected. To counteract this, instead of replacing the X-ray tube by one with a different anode material, a filter of an element dependent on the anode material, is interposed as stated above. For example, in the analysis of a steel specimen, for the determination of the chromium content, when a chromium anode is used, the background radiation Fig. 2 (not shown) has a peak at the wavelength which is to be used in the measurement of the chromium content. The interposition of a titanium filter (having an absorption characteristic as in Fig. 3, not shown) reduces the unwanted line to reasonable proportions Fig. 4 (not shown). The shorter wavelength primary radiation which produces the fluorescent radiation of the specimen, is passed by the filter with little attenuation. In the determination of lead, tantalum or bismuth in steel, a tin filter is necessary. The apparatus is designed so that the filter for the determination of a particular constituent can be switched in when needed. This is decided by the angular displacement of the detector 6 with respect to the diffraction crystal 5. A number of filters are therefore carried in a special mount Fig. 7 (not shown) attached to a permanent magnet and coil arrangement, operated by signals from a switching unit controlled by the actuation mechanism which displaces the detector 6.
Patent GB-329570-A (GB)
Title: Mold breaking and transporting device
IPC: B29D30/06
Filed: 1929-07-26
Abstract: 329,570. Goodyear Tire & Rubber Co., (Assignees of Nelson, M. C.). Dec. 15, 1928, [Convention date]. Mould-opening devices.-A mould-opening and transporting device comprises duplex piston-andcylinder apparatus carrying supporting and opening claws and suspended 'from an overhead runway. The upper cylinder 10, suspended from the .runway 30, surrounds a piston 40 which supports the lower cylinder 58. The latter surrounds a piston 90 to which one pair of mould-engaging hooks 218 are linked. Another pair of mouldengaging hooks 156 are connected to the lower cylinder and positioned by a small piston and cylinder 163 or alternatively by a spring rod. Raising the upper piston lifts the mould bodily for transport through the agency of the hooks 156, while raising of the lower piston rotates the hooks 218 while the hooks 156 remain stationary, thus opening the mould.
Patent GB-598721-A (GB)
Title: Improvements relating to band-pass coupling circuits
IPC: H03H7/01
Filed: 1945-09-07
Abstract: 598,721. Impedance networks. HORNER. K. W. Sept. 7, 1945, No. 23073. [Class 40 (iii)] A wide-band coupling comprises two transformers 1, 2, tuned by condensers 10, 11, 12, 13, and having the primary coil of the transformer 1 coupled to the secondary coil of the transformer 2 by means of a common shunt condenser 4, while the other two coils are coupled, by means of a common reactance 3. The passband has a small peak at the wide-band frequency when the reactance 3 is an inductance, and a small dip when the reactance 3 is a capacitance. This peak or dip may be used to operate a tuning indicator, or may be reduced or eliminated by insertion of a resistance at 14. By means of a switch 5 the coupling condenser 4 may be cut out, to produce high selectivity, a condenser 9 being inserted to prevent detuning of the transformer 2.
Patent GB-342247-A (GB)
Title: Improvements in method of producing zeolites
IPC: C01B33/46
Filed: 1929-07-27
Abstract: In the production of artificial zeolites by reaction between an acid or alkaline solution of amphoteric metal hydroxide and a soluble silicate or a colloidal solution of silicic acid with production of a major- or full-volume gel, the reaction mixture is maintained at a pH value above 7 but not exceeding 8,4 during the reaction.  For instance sodium or potassium silicate may be reacted with aluminium sulphate or acetate, chromium sulphate, or iron salts, or with sodium aluminate.  Acids such as sulphuric, acetic, or carbonic acids, or alkalies or alkaline materials such as caustic soda, alkaline-earth metal hydroxides, alkali or alkaline-earth metal carbonates or bicarbonates, may be added to control the pH value of the reaction mixture.  The products are dried at 50-100 DEG  C., with or without prior removal of mother liquor by exudation, drainage, or pressing. Reference has been directed by the Comptroller to Specification 313,206, [Class 1 (iii), Oxides &c., Metallic.].
Patent GB-161114-A (GB)
Title: Improvements in nut locks
IPC: F16B39/12
Filed: 1920-08-10
Abstract: 161,114. Hughes, W. Aug. 10, 1920. Locking nuts.-A washer c with a tapering projection a is arranged at the back of the nut a to be locked and is engaged by a tapered slot in a nut f. Upon tightening-up the nut f, the washer is forced against the nut a and the projection is forced into the thread of the bolt &c.
Patent GB-598176-A (GB)
Title: Improvements in or relating to temperature-sensitive instruments
IPC: G01K11/24
Filed: 1944-11-24
Abstract: 598,176. Measuring sounds and like vibrations. ACE ELECTRONICS, Ltd., WELCH, L. C., and COOK, R. J. Nov. 24, 1944, No. 23448. [Class 40 (i)] [Also in Group XX] A temperature indicator utilizing mechanical waves comprises a cathode-ray oscillograph arranged to indicate the phase difference between electrical oscillations supplied to and received from two electro-mechanical transducers attached, in spaced relation, to a rigid body. (e.g. a rod or tube) subject to the temperature to be measured, whereby mechanical waves pass from the transmitter to the receiver through the body or through a liquid medium contained therein. As shown, the magneto-strictive or piezo-electric transducer 1, oscillated at resonance by the generator 12, sends vibrations through the body, whose temperature is to be measured, to a receiving transducer 2 (of equal resonance), whence corresponding electric oscillations are applied, through a phase-maintaining amplifier 13 and a phase-splitter 21, to the deflecting electrodes of a cathode-ray tube 14, thus causing the spot to rotate in a circular path in phase with the received vibrations. The oscillations of the generator 12 are also applied to the cathode-ray tube through the path 16, 17, 18 (the latter converting the sinusoidal oscillations a into sharp pulses b, one per cycle) to cause radial deflection of the spot, the angular position of which around the trace will coincide with the phase displacement angle and when read against a suitable scale on the screen will indicate the temperature. The transducers may have a resonance of, e.g. 10 mc., in which case the electric oscillations corresponding to the emitted and received signals may be reduced to a frequency of the order of 1 kc., by heterodyning in the mixer-modulators 16, 19 with the output from an oscillator 15, maintained at a frequency of 1 kc. above that of the generator 12 by heterodyning the latter in a mixer-modulator 25 with the output of a 1 kc. oscillator 26. Tuned filter circuits 17, 20, 24 eliminate unwanted frequencies. A suitable temperature-sensitive unit (Fig. 1, not shown) may comprise a metal tube filled with water or butyl bromide, the ends of which are closed by the two crystals 1, 2 pressed against a fluidtight packing by spring contacts held in place by insulating screw caps. A small maintaining reservoir partially filled with air may be connected to the tube. According to the Provisional Specification, a single transducer may be used for emission and reception from an internal reflecting surface of the body, and a regulating device may be controlled by a signal produced by a thermionic valve in dependence upon the phase relation of the emitted and received oscillations.
Patent GB-735496-A (GB)
Title: Improvements in or relating to multi-channel telecommunication systems
Inventor: JANSSON KNUT STIG TORBJOERN
IPC: H04J3/04
Filed: 1953-08-25
Abstract: 735,496. Multiplex pulse signalling; pulse lengthening circuits. TELEFONAKTIEBOLAGET L. M. ERICSSON. Aug. 25, 1953, No. 23486/53. Classes 40 (5) and 40 (6). The amplitude-modulated pulses of a multichannel train are passed through at least two distributer stages and pulse-lengthening means are provided between a pair of said stages. In the embodiment described, the inooming eight-channel pulse train at terminal 30, Fig. 2, is distributed in circuit 31 into four group trains comprising channels 1 and 5, 2 and 6, 3 and 7, 4 and 8 respectively, which are fed to pulse lengtheners 36... 39 respectively. The outputs from the latter are distributed by circuits 44 ... 47 into the eight single channel pulse trains at the terminals 51 ... 58. The circuit of one example of pulse lengthener comprises a condenser 66, Fig. 3, which is charged by each pulse, through rectifier 65 and cathodefollower 61, from the pulse source 32. The condenser is discharged, before the next charging pulse occurs, by a local pulse from a train at terminal 73 applied through cathodefollower 69 to render rectifier 68 conducting. Rectifier 67 prevents condenser 66 from being charged negatively and the lengthened pulses thereacross are taken from terminal 40. In a simpler example the condenser 66 is included in the anode circuit of the charging valve and is discharged through a rectifier rendered conducting by the output from a transformer fed by the local pulses, Fig. 4 (not shown). In another circuit the pulses to be lengthened and derived from input terminal 32, Fig. 5, charge the condenser 66 through rectifier 65. The condenser is shunted by a network comprising rectifiers 76, 77, 79, 80, which are normally rendered non-conducting by the bias source 87. A local pulse from terminals 73, through transformer 84 neutralizes the bias source 87 and renders the rectifiers conducting to discharge condenser 66, from the upper terminal 40 of which the lengthened pulses are obtained.
Patent GB-652814-A (GB)
Title: Process for the production of iron and iron alloys
IPC: C21B13/12
Filed: 1948-09-07
Abstract: In a process for the production of iron or iron alloys from iron-containing silicates in an electric furnace, a reducing charge of carbon and lime is fed on top of the iron silicate, the temperature being maintained high enough to cause reaction between the carbon and the lime to take place whereby three layers are formed, the lowest being molten iron, the middle being molten silicate and the uppermost being products of reaction between the silicate and the carbon-lime reaction.  The process is stated to be particularly effective in the production of iron alloys from the liquid silicates obtained as slag in the reduction of copper ores. The copper in the siliceous slag may be reduced by treating it in the molten state with iron pyrites when copper and impurities such as nickel, cobalt and precious metals are removed as sulphides.  It is stated that steel of less than 0.1 per cent of carbon with or without 0.001 to 2.5 per cent of copper may be obtained.  The Specification as open to inspection under Sect. 91 includes also steel containing up to 25 per cent of copper.  This subject-matter does not appear in the Specification as accepted.