baber/WOPTO huggingface dataset:
Patent GB-1119207-A (GB)
Title: Improvements in disc brakes
Inventor: KEATLEY WILLIAM ERNEST
IPC: F16D65/56
Filed: 1964-09-23
Abstract: 1,119,207. Disc brake. DUNLOP CO. Ltd. 3 Sept., 1965 [23 Sept., 1964], No. 38730/64. Heading F2E. A disc brake comprises an annulus 5 secured at its outer edge to a rotatable spider 2, aligned friction elements 6, 7 on either side of the disc slidably supported on pins 9 mounted on a non- rotatable support 10, 11, a tie rod 22 adjacent the inner periphery of the disc and connected to one friction element 6, and brake operating means of the ball and ramp type associated with the second friction element and the tie rod. After operation of the brake the pads are returned by springs, some of which are disposed within the guide pins 9. The friction elements each comprise a pressure plate to which three friction pad assemblies are detachably secured by the heads of bolts 14 (Fig. 1, not shown). On removal of the bolts the pads may be removed radially through a gap in the spider 2. The rotatable thrust plate 28 of the ball and ramp type actuator may be rotated directly by a lever or, as shown, by a tubular member 35 rotatable by a splined shaft 38. Wear adjustment.-A reaction member 41 is disposed between the plate 28 and an adjustment member 42 formed by a nut engaging a left-hand thread on the tie rod. A roller race 43 and a friction ring 44 are disposed on the faces of the member 41 and a spring clutch 48 surrounds a cylindrical surface 49 of the adjustment member 42, the end 50 of the spring engaging loosely in a notch 51 in member 35. For normal clearance, the rotation of the hollow shaft 35 is insufficient to move the spring, but if the clearance is excessive the spring 48 is moved around the surface 49 to a new position as the brake is applied. On release thereof the return motion of the hollow shaft 35, the opposite end of the notch 51 abuts the end 50 of the spring which then carries the nut 42 around to draw the tie rod therethrough and reduce the clearance. The nut can be manually adjusted when the cover 45 has been removed. The adjustment member may alternatively be provided with a manually releasable locking device such as a plunger on the reaction member engaging serrations on the adjustment member.
Patent GB-1451517-A (GB)
Title: Glow discharge switch
IPC: H05B41/08
Filed: 1974-09-05
Abstract: 1451517 Thermal switches PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 5 Sept 1974 [8 Sept 1973] 38837/74 Heading H1N A glow discharge switch is provided with a tubular discharge vessel 1 including electrodes 7, 8 at least one of which is an elongated bi-metal electrode the longitudinal axis of which is located in and is curved upon heating in a plane at right angles to the longitudinal axis of vessel 1, the maximum length of vessel 1 being 25 mm, vessel 1 and a further electrical circuit element being surrounded by a tubular envelope 10 having a length of 35 mm Œ 5% and a diameter of 22 mm Œ 10%, the longitudinal axes of vessel 1 and envelope 10 being parallel, the further circuit element being between vessel 1 and an end partition 20 of envelope 10 located at right angles to the longitudinal axis of envelope 10. The further circuit element may be a PTC resistor 14, or a second discharge vessel (36a), Fig. 5 (not shown). A capacitor 13 may be included.
Patent GB-938803-A (GB)
Title: Improved commutatorless compounded synchronous generators
IPC: H02P9/38
Filed: 1959-11-17
Abstract: 938,803. Synchronous generators. A. O. VAN KAICK, and A. VAN KAICK, [trading as VAN KAICK AUK GENERATOREN UND MOTORENWERKE]. Nov. 17, 1959 [Nov. 17, 1958], No. 38996/59. Class 35. A commutatorless compounded synchronous generator G having automatic voltage regulation has coupled to it a regulating machine R whose stator is angularly adjustable relative to that of the generator and which machine comprises a direct current excited rotor and two stator windings one W 2  being series connected with the generator output winding so as to be traversed by the load current I and the other W 1  being series connected between a main rectifier GL 1  feeding exciter current to the generator rotor IK and the generator output winding or a tapping thereon or a generator auxiliary winding. The regulating machine rotor core is of either the salient pole or the grooved cylindrical type and its winding I R K R  is fed through an auxiliary rectifier Gl 2  or the main rectifier Gl 1  or may be subdivided for simultaneous excitation at two different voltages which may be constant and load-responsive respectively. The generator rotor winding may be similarly subdivided the divided part being fed via the auxiliary rectifier Gl 2  from the generator output voltage U G . The axes of the windings W 1 , W 2  may be mutually adjusted by cyclic interchange of the individual windings.
Patent GB-1205436-A (GB)
Title: Improvements in and relating to refractory materials and processes of their preparation
IPC: C04B35/44
Filed: 1967-08-24
Abstract: 1,205,436. Refractory materials. SOCIETE GENERALE DES PRODUITS REFRACTAIRES. 24 Aug., 1967 [26 Aug., 1966; 16 Jan., 1967], No. 39073/67. Headings C1A and C1J. A refractory material, containing magnesia, comprises a crystal structure of contiguous monocrystals of a size at least equal to 20 microns, particularly periclasite monocrystals, assembled in crystalline aggregates of a grain size at least equal to 200 microns; and has a specific density of at least 3, an apparent porosity not greater than 8% by volume and a resistance to thermal deformation such that linear shrinkage does not exceed 0.5% after being maintained at 1500 C. for 24 hours and subsequently at the same temperature and under a load of 2 kg./cm.<SP>2</SP> for a further 100 hours. The refractory material may contain at least 92% of its total weight of magnesia the rest comprising the oxides present in the initial mixture which are not eliminated during firing. A preferred refractory product contains at least 92% by weight of a mixture of from 20 to 80% by weight of magnesia and 80 to 20% by weight of at least one other refractory material chosen from Cr 2 O 3 , natural chromite, TiO 2  and calcined dolomite. The refractory material is made by preparing from fully calcined magnesia of a purity corresponding to that required for the final product, a mixture having by weight at least 50% of grains of sizes between 5 mm. and 0.2 mm., of which at least half is of between 5 mm. and 1À5 mm., less than 50% of magnesia crushed to less than 200 microns and 1 to 6% of recrystallization additions, e.g. combinations of the SiO 2 -CaO or B 2 O 3 -CaO systems, crushed to less than 74 microns, forming this mixture to shape, firing the resultant products at a temperature between 1550 and 1650 C., causing the formation of a transient liquid phase of high vapour pressure which by at least partial volatilization of its ingredients promotes the formation of the monocrystals and the crystalline aggregates. Optionally, the mixture contains 0.2 to 1% by weight of an organic binder, e.g. bisulphite lye.
Patent GB-949338-A (GB)
Title: Process for forming a heat insulated container and article produced thereby
IPC: B29C44/12
Filed: 1961-11-01
Abstract: 949,338. Seaming non-metallic sheet material. SOUTHERN CALIFORNIA PLASTIC CO. Nov. 1, 1961 [April 20, 1961], No. 39076/61. Heading B5K. [Also in Division F4] A heat-insulated container is formed by spin welding a liner within a shell to define an enclosed space therebetween. Shell 12, held by a chuck, is rapidly spun (3,000 r.p.m.) with respect to liner 10, whilst a polymethane is foamed and distributed throughout the space 54 therebetween, until the frictional heat welds rim 20 with V-shaped groove 50. A small hole 60 permits the escape of entrapped air. A suitable polymethane formulation comprises, by weight, 49.0 parts toluene diisocyanate, 0.25 silicone compound, 37.5 polyether, 13.0 monofluorotrichloromethane, 0.25 triethylene diamine. Alternatively, the space 54 may be filled with pre-expanded pre-formed polystyrene. Shell 12 and liner 10 are domed at 16 and 24 to allow for variations in foamed volume. The minimum separation of shell 14 and liner 10 is # inch. In another embodiment, Fig. 5, a tumbler having a thicker upper lip 26a is formed. Materials suitable for liner and shell are polyethylene, polyvinylchloride, polyvinylacetate, polystyrene, polytetrafluoroethylene, polytrifluorochloroethylene, polymethylmethacrylate, polypropylene, the acrylics and nylon.
Patent GB-862361-A (GB)
Title: Improvements in or relating to polyurethane foams
IPC: B29C33/64
Filed: 1959-11-19
Abstract: A mould release agent for use in the moulding of polyurethane foams comprises a dimethylpolysiloxane which may contain a minor proportion of methylphenyl-, diphenyl-, phenylethyl-, methylvinyl- or diethyl-siloxane units, which is coated on the surface of the mould and cured in situ at room or elevated temperature by means of (a) cross-linking agents, e.g. methyl hydrogen siloxanes, alkyl silicates and polysilicates, together with metal carboxylates; (b) siloxanes containing SiH groups and chloroplatinic acid, where the dimethylsiloxane contains Si-bonded vinyl radicals; (c) atmospheric moisture, where the Si-OH groups. in the dimethylsiloxane have been replaced by acetoxy groups; and (d) organic peroxides and heating to above 110 DEG  C.  U.S.A. Specification 2,811,408 is referred to.ALSO:A mould release agent for use in the moulding of polyurethane foams comprises a dimethyl-polysiloxane which is formed on the moulding surfaces as a cured film.  The term "dimethyl-polysiloxane" includes siloxanes in which all the units are of the formula (CH3)2SiO and those diorganosiloxanes in which a major proportion of the siloxane units are of this formula, the remainder being phenyl or lower aliphatic siloxane units.  The presence of any appreciable amounts of triorgano-siloxane units is excluded.  Thus the term includes copolymers of dimethylsiloxane with phenylmethylsiloxane, diphenylsiloxane, phenylethylsiloxane, methylvinylsiloxane, or diethylsiloxane.  The siloxane can be applied to the mould surface by any convenient method such as by spraying, dipping or brushing, and it can be employed either per se or in solution or emulsion form. Relatively small amounts of the siloxanes are required, e.g. a dispersion containing 5% by weight gives good results.  Any convenient method of curing may be employed.  U.S.A. Specification 2,811,408 is referred to.
Patent GB-812781-A (GB)
Title: Arrangement for limiting the interference noises and voltage peaks in a sweep transformer, particularly of television receivers
IPC: H03K4/26
Filed: 1956-12-28
Abstract: 812,781. Sawtooth generator circuits. STANDARD TELEPHONES & CABLES Ltd. Dec. 28, 1956 [Dec. 31, 1955], No. 39451/56. Class 40 (6). In a sawtooth waveform generator the linearity of the sawtooth is improved by eliminating voltage peaks by means of a diode voltage-limiting circuit connected across at least part of the output transformer winding so that the diode conducts during the flyback period. The Figure shows a sawtooth deflection system for a cathode-ray tube 8 of a television receiver in which a sawtooth voltage waveform from a discharge tube V is applied via a transformer to deflecting coils 7. Lamination noise in the transformer and unwanted peaks in the sawtooth waveform are eliminated by damping circuits such as gas tubes 13 or 14 which may be connected across a special transformer winding 41 or by biased rectifier 15. The D.C. voltage from the rectifier 15 may be used as a D.C. supply for a non-loading part of the circuit, e.g. as a grid-bias supply. The glow from the gas tube may be used to indicate readiness of operation of the television set.
Patent GB-1263492-A (GB)
Title: Container and attached label
Inventor: HOFE GEORGE W VON
IPC: G09F3/02
Filed: 1969-02-07
Abstract: 1,263,492. Labels. NEW JERSEY MACHINE CORP. 7 Feb., 1969 [12 Feb., 1968], No. 39457/71. Divided out of 1,263,491. Heading B8F. The subject-matter of this Specification is the same as that of Specification 1,263,491, but the claims relate to a container having a label with an integral tab.
Patent GB-1525606-A (GB)
Title: Purification devices
IPC: B01D21/24
Filed: 1975-09-26
Abstract: 1525606 Waste water purifying plant PIELKENROOD-VINITEX BV 26 Sept 1975 [10 Oct 1974 2 Sept 1975] 39463/75 Heading BID [Also in Division Cl] Waste liquid purifying plant comprises a separator 4 in series with means which restricts the flow therethrough to a level not substantially exceeding the maximum design flow rate and an emergency overflow weir 11 upstream of the separator to divert the excess flow, e.g. during storms, so that the separator 4 is never rendered inefficient by excessive flow. In Fig. 5 the flow is restricted by one or more horizontal pipes 3. Alternatively the weir 6 could cooperate with an inverted weir 16 (Fig. 3) to restrict flow, the lower edge of weir 16 being level with weir 11. Weirs 6, 16 may differ in thickness or have saw toothed or corrugated edges, and weir 16 may be adjustable vertically or horizontally. The weirs could be replaced by apertures in a single plate, which may be extended upstream or downstream by L-shaped pipes acting as overflows. The overflows may be partly obstructed by vertically adjustable members of various shapes (Figs. 12, 13 not shown). If heavy solids are settling out in separator 4, so that level variations are tolerable, flow restrictors may be located downstream of the separator. If floating impurities are being removed, by overflow 9 for example in Fig. 5, the flow restrictors are upstream of separator 4. An alternative flow restrictor is a constant delivery pump (23, Figs. 14, 15 not shown) whose throughput equals the separator design flow rate. Excess flow over weir 11 may pass to waste or may be stored in buffer tanks. Alternatively (Fig. 16) additional separators 32 are provided in parallel with separator 4, weirs 34 being higher than weir 6 so that separators 32. only come into use under excess flow conditions. Separators 4, 32 are of the inclined, corrugated parallel plate type. Pump 28 recirculates liquid to submerged nozzle(s) 25 to lift floating impurities to the surface in separator 4. Skimmers 30, 35 discharge such impurities to chamber 31. Weir 34 could alternatively be upstream of separators 32, and one set of separators 32 could purify the excess liquid from several separators 4. Alternative separators are simple settling tanks or biological purifiers using active sludge.
Patent GB-1326051-A (GB)
Title: Elemental analyzing apparatus
IPC: G01N23/225
Filed: 1970-08-17
Abstract: 1326051 Mass spectrometers MINNESOTA MINING & MFG CO 17 Aug 1970 [18 Aug 1969] 39572/70 Heading H1D Apparatus for determining the elemental composition of a solid surface comprises an ion source 26, a sample to be analysed, an energy analyser 45, and an ion detector 70 all positioned in a chamber (not shown) which is evacuated and then back-filled with a noble gas. The ion source 26 comprises a grounded tubular housing 25 containing a heated filament 27 located between an electron repelling electrode 30 and a grid 28 defining an ionization region 29. Ions are extracted through an aperture 32 in a plate 31 and pass through apertured anode plates 33, 35, 37, 39 and between deflector plates 57 to form a beam 42 which bombards a sample mounted on an octagonal or hexagonal holder 61 provided with a ratchet wheel 63 which can be rotated by a detent arm 65 operated by a solenoid 64. The current to the specimen is measured by a meter 81. Ions scattered from the specimen pass between plates 48 of the electrostatic analyser 45 which are connected to a sweeping power supply 90. The analyser is provided with entrance and exit diaphragms 46 and 49 having slits 47 and 50 and positively biased by a source 88. Ions from the exit diaphragm 50 enter a continuous channel electron multiplier 71 in the detector 70.
Patent GB-974540-A (GB)
Title: Improvements relating to arrangements for generating and sending multi-frequency code signals
Inventor: DRAKE BERNARD
IPC: H04M15/08
Filed: 1962-10-19
Abstract: 974,540. Automatic exchange systems; transistor oscillator circuits; keying carrier frequencies. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Aug. 30, 1963 [Oct. 19, 1962], No. 39702/62. Headings H3R, H3T and H4K. In a multifrequency code signal transmitter, particularly for sending to a toll centre information relating to directly dialled toll calls, which comprises a number of single frequency oscillators continuously connected to feed a common output amplifier, the oscillators are normally quiescent and are arranged to build up rapidly to a steady state oscillating condition when marked by potential on a corresponding input wire. The information, which consists of the calling and called numbers and a class of service indication, is stored in a register sender RSS and is transmitted in a 2-out-of-6 frequency code under the control of a distributer SD. The output terminals 3, 4 of the oscillators G1 ... G6 are connected in series to feed a transistor amplifier VT1  arranged as an emitter-follower. With contact b closed, a potential of- 12V. is connected by way of point J to input terminals 2, and when two input terminals 1 are earthed in the register sender RSS the corresponding oscillators come into oscillation rapidly, the output being delivered to an outgoing line LA, LB for a period of 50ms. while contact s is closed. Each of the oscillators comprises a transistor VF with an output transformer TRA and tuning capacitor C, and the rapid build-up to the steady state oscillating condition is attained by providing a high degree of positive feedback from winding II and by the absence of decoupling capacitors. Rectifier MRB clips the excursions of the positive-going potential at the upper tapping on winding I and thus minimizes the production of the second harmonic resulting from the bottoming of the transistor once per cycle. The build-up time may be further reduced by a capacitor and resistor in series across resistor RA.
Patent GB-851874-A (GB)
Title: Improvements in or relating to the production of polymeric linear terephthalate ester films
IPC: B29C71/00
Filed: 1957-12-27
Abstract: The physical properties of linear terephthalate ester film are improved by stretching the substantially amorphous film at a temperature of 80-120 DEG C. from 1,5-3,0 times the unstretched dimension in one direction and from 3,7-5,0 times in the direction transverse to that of the first stretch, and heat-setting the stretched film at a temperature of 150-200 DEG C. under tension. After the first stretch the film may be restrained from shrinking in this direction while being stretched transversely, or alternatively the film may be stretched more than is required in the first stretch and allowed to shrink to within the specified limits during the transverse stretch.  Specified linear terephthalate esters from which the films may be made are those derived by reacting a glycol of formula HO(CH2)nOH, where there is an integer of 2-10, with terephthalic acid or an ester-forming derivative thereof or a low molecular weight alkyl ester thereof, e g the dimethyl or diethyl ester, with or without up to 20% by weight (based on the weight of terephthalic acid or derivative thereof) of a second acid or ester thereof, said second acid being isophthalic, diphenic sebacic, hexahydroterephthalic, adipic, azelaic, naphthalic, or 2 : 5 dimethyl terephthalic acid or bis-p-carboxyphenoxy ethane Examples of the treatment of polyethylene terephthalate film are given. Specifications 743,503 and 851,875 are referred to.
Patent GB-346027-A (GB)
Title: Improvements in holders for electric lamps and the like
IPC: F21V23/04
Filed: 1929-12-30
Abstract: 346,027. Electric incandescent lamp holders ; couplings. BROWNE, H. C., 49, Hodford Road, Golders Green, and SANDERS, E. A., 116, Fordwych Road, Brondesbury, both in London. Dec. 30, 1929, No. 39793. [Class 39 (ii).] A holder for an electric incandescent lamp, or coupling for an electric iron &c., comprises a moulded insulating body a carrying an inserted tube or sleeve b provided with bayonetslots c and pins or plungers e which are projected into the sleeve b by springs g disposed within a transverse passage f, the outer ends g2 of the springs being secured in a recess by screws which may act as terminal screws to conduct current through the springs to the lamp &c. The sleeve b is preferably carried by an interchangeable socketed cap b<1> to enable the holder to receive lamps of different sizes. The ends of the springs g may be forked to engage reduced portions of the plungers e, or the springs may have a bearing contact upon the tops of plungers provided with flanged heads to prevent them from dropping through the socket. An insulating partition h is secured between the ends g<2> of the springs, and a switch k may also be provided.
Patent GB-873448-A (GB)
Title: Process for producing l-glutamic acid by bacterial fermentation
IPC: C12P13/14
Filed: 1959-11-24
Abstract: L-Glutamic acid is prepared by cultivating a strain of Brevibacterium lactofermentus nov. sp. under aerobic conditions and in the presence of an assimilable carbon source and an assimilable nitrogen source. Carbon sources are preferably glucose, fructose, sucrose, maltose, lactose or a hydrolysate of starch.  Nitrogen sources are preferably ammonium sulphate, urea or ammonia, the latter being used to maintain a pH of from 7.4 to 8.3 automatically by means of a pH electrode control. Temperatures preferably range from 28 DEG  to 37 DEG C. during fermentation.  High yields are obtained by addition of Vitamin B1 (thiamine), thiamine propyl disulphite or dibenzoyl thiamine to the fermentation broth.  Specified strains of Brevibacterium lactofermentus are A.T.C.C. 13655 and 13869.
Patent GB-980291-A (GB)
Title: Synchronising and speed control devices
Inventor: NEWPORT HERBERT
IPC: F02D25/00
Filed: 1960-11-21
Abstract: 980,291. Automatic speed controL DOWTY ROTOL Ltd. Nov. 14, 1961 [Nov. 21, 1960], No. 39946/60. Drawings to Specification. Heading G3R. In an arrangement for synchronizing a slave to a master gas turbine engine a fuel flow control lever incorporates a dynamo-electric machine comprising two interconnected wound rotor elements coupled by a common shaft and two corresponding stator windings. One stator winding is supplied with polyphase alternating current from a generator driven by the master engine while the other stator winding is supplied with polyphase alternating current from a generator driven by the slave engine. The shaft of the machine is stationary when the master and slave engines are in synchronism; a speed difference causes the shaft to rotate and move the fuel flow control lever.