baber/WOPTO huggingface dataset:
Patent GB-1367350-A (GB)
Title: Direct current alarm circuit
IPC: G08B23/00
Filed: 1971-07-02
Abstract: 1367350 Protective arrangements DANFOSS AS 2 July 1971 [8 Aug 1970] 31108/71 Heading H2K A fault alarm arrangement comprises an alarm device 8 in series with a manuallyoperable retractive switch 9 and a controllable rectifier 10 which may be rendered conductive by the voltage set up across a resistor 12 when a charged capacitor 14 is discharged through the resistor and a switching element, e.g. a transistor 3, when a fault occurs. In the arrangement shown, a fault responsive member, e.g. a switch 4, or a temperature responsive resistor, or a photo-electric switch, causes the transistor 3 to conduct on the occurrence of a fault. This lights a warning lamp 6 and causes the discharge of the capacitor to switch on the controlled rectifier 10. Opening the switch 9 switches off the alarm device 8 which remains off when the switch recloses as the capacitor 14 is discharged and cannot render the rectifier 10 conductive. The lamp 6 remains alight until the fault condition is removed and the transistor 3 ceases to conduct. The capacitor is then recharged through resistors 7, 12 and 13.
Patent GB-816036-A (GB)
Title: Potential producing electric cell
IPC: H01M6/18
Filed: 1957-10-04
Abstract: 816,036. Batteries. RUBEN, S. Oct. 4, 1957, No. 31120/57. Class 53. A potential-producing cell has a solid electrolyte 13 of bismuth sulphate or antimony sulphate. The positive electrode material 15 may consist of lead peroxide or oxides of manganese or vanadium mixed with graphite or of the permanganates of barium, potassium, silver or copper mixed with graphite, and below the positive material is a member 14 of nickelchromium alloy. The negative electrode 12 may consist of carbon or graphite, a nickelchromium alloy, steel, chromium, antimony, tin, lead, or aluminium. The electrolyte 13 is made by compressing the sulphate of antimony or bismuth into discs which are then crushed and again pressed into discs. A small quantity of a silicone may be mixed with the sulphate to prevent absorption of moisture. The positive electrode may be made by electrodepositing lead peroxide from lead nitrate solution on to a strip of nickel-chromium alloy from which discs are punched. Alternatively lead peroxide may be compressed with a binder such as gum arabic, paraffin, styrene, polyvinyl compounds &c. A battery may be formed by superimposing cells under pressure in a nickel-plated steel container lined with styrene and closed by an insulated metal cover. The container is evacuated and closed hermetically. The pressure between the cells may be maintained by a spring. Cells may be made in roll form from nickelchromium foils, respectively coated with lead peroxide and uncoated, and separated by paper impregnated with sulphate of bismuth or antimony.
Patent GB-677354-A (GB)
Title: Improvements in and relating to the production of vinyl, 2,3,4,5-tetrachlorobenzoatepolymers and copolymers
IPC: C08F18/20
Filed: 1949-12-06
Abstract: Polymers and copolymers are prepared by heating vinyl 2,3,4,5-tetrachlorobenzoate alone or with another compound containing a polymerizable CH2=C< grouping. Polymerization preferably takes place in the presence of a catalyst which may be ozone, an ozonide, barium peroxide, sodium peroxide, acetyl peroxide, lauryl peroxide, stearyl peroxide, benzoyl peroxide, acetyl benzoyl peroxide or a perborate, persulphate or perchlorate.  In an example the copolymerizable compound may be vinyl benzoate, methyl methacrylate, vinyl acetate or styrene, and the Specification also contains a long list of suitable comonomers.  The copolymers may be used alone or in combination with other insulating materials as dielectric materials in electrical apparatus.  Specifications 394,776, [Group XXXVI], and 547,525 are referred to.ALSO:Vinyl 2,3,4,5-tetrachlorobenzoate is prepared by heating 2,3,4,5-tetrachlorobenzoic acid with a vinyl ester of a saturated aliphatic monocarboxylic acid, particularly vinyl acetate, in the presence of a suitable catalyst, e.g. mercuric sulphate.
Patent GB-962111-A (GB)
Title: Method for the production of thermoelements
IPC: C22C32/00
Filed: 1960-09-12
Abstract: Thermoelements are made by mixing in powder form at least one of the elements sulphur, selenium and tellurium with one or both of the elements bismuth and antimony, in amounts corresponding to one or more compounds of formula Y2Z3, where Y is bismuth or antimony and Z is sulphur, selenium or tellurium, heating at a temperature sufficiently high to cause chemical reaction, cooling, pulverizing the product, shaping the powder by pressing, and sintering the shaped material at a temperature below the congruent melting point of the compound formed, or when more than two of the elements are present, of that compound formed which has the higher or highest melting point. From 0.001 to 0.1% by weight of impurities may be added to influence the properties of the thermoelements; the impurities may be added in elemental or compound form and may be copper, silver, gold, bromine or iodine for N-type thermoelements, or germanium, tin, lead, gallium, indium, thallium, aluminium, zinc, cadmium or mercury for P-type thermoelements. In examples, thermoelements are prepared from bismuth and tellurium, bismuth, tellurium and antimony, bismuth, tellurium and selenium, and bismuth, tellurium and sulphur; the added impurities are silver iodide, lead, thallium, copper bromide and copper iodide.
Patent GB-806606-A (GB)
Title: Automatic control system for the scanning of workpieces by ultrasonic or like probes
IPC: G01N29/265
Filed: 1955-11-03
Abstract: 806,606. Automatic position control systems. HIRSCHMANN, F. Nov. 2, 1956 [Nov. 3, 1955], No. 31452/55. Class 38 (4). Automatic control means for the non- destructive testing of a workpiece by a probe such as an ultrasonic transmitter-receiver comprises at least one electrode on the probe, the electrical conditions between the electrode and the workpiece, which are separated by a liquid, being used to maintain a fixed spatial relationship between probe and workpiece. As shown, an electrically conductive liquid such as a weak salt or acid is used, and the alternating currents from secondaries of transformer 17 passing between the workpiece 3 and electrodes 9 and 10 mounted on the ultrasonic probe 1 are rectified at 90 and 100 respectively and passed through control windings 91 and 101 of magnetic amplifiers 11 and 12 in such a way that the sum of the two currents is balanced against a pre-set current in winding 18 in amplifier 11 and the out-of-balance direct current from the bridge rectifier supplied to a split filed motor 6 which moves the probe to maintain a constant distance from the workpiece. Similarly the difference of the currents through electrodes 9 and 10 controls the motor 8 which rotates the probe to keep it at right-angles to the workpiece surface. A second pair of electrodes at rightangles to those shown may also be used, in cases where the workpiece cross-section varies in a direction perpendicular to the plane of the Figure. It is stated that an optical, radioactive or other probe may be used instead of an ultrasonic probe, and that the probe may be controlled by the voltage between electrode and workpiece instead of by the current.
Patent GB-668467-A (GB)
Title: Improved method of processing raw wool
IPC: D01C3/00
Filed: 1948-12-06
Abstract: In the processing of raw wool, the wool is treated with a fat-dissolving heavy oil which has a flash point above that of the ambient temperature and also maintains the wool fibres in an unfelted condition, the major portion of the oil with dissolved matter from the wool then being removed to leave the wool ready for carding.  The heavy oil comprises mineral or vegetable oils. Although wool grease and other impurities are removed from the fibres, the main purpose of the process is to lower the viscosity of the wool grease and reduce the friction between the fibres to enable them to be easily separable.  A proportion of wool grease may thus be left in the oil remaining on the fibres.  The raw wool and treating oil may be stirred together or the raw wool may be treated with a stream of the oil.  The material may be treated in stages in countercurrent, the raw wool being first treated with oil having a comparatively high percentage of wool grease and finally treated with relatively pure oil.  Excess oil is then removed from the wool by rollers and most of the remainder by centrifugation.  Further removal may be effected, if desired, by a subsequent blowing step with warm air or steam.  Some oil, which may contain a small proportion of wool grease, is thus left on the fibres and is not removed until after the carding operation or even after the wool has been woven into a fabric, when it may be removed by water washing, with a washing agent if desired, when some felting of the fibres no longer matters.  The wool grease may be recovered from the treating oil and the latter re-used.
Patent GB-841904-A (GB)
Title: Improvements in or relating to track laying vehicles
Inventor: BONMARTINI GIOVANNI
IPC: B60F3/00
Filed: 1957-10-09
Abstract: 841,904. Endless tracks for vehicles. EST ETABLISSEMENT SCIENCES TECHNIQUES. Oct. 9, 1957, No. 31586/57. Class 79(1). A roller rotatable about an axis parallel to the plane of the track of a track-laying vehicle and associated with each segment of a rolling device is mounted with slight clearance on a spindle so that the roller is braked by friction, when the vehicle moves transversely across a slope; the clearance being such that the movement produced by friction is less than the maximum movement urging the roller to rotate due to a change in the direction of motion of the vehicle. The rolling device is similar to that described in Specification 756,078 and comprises a roller with a tread 2 of rubber or similar material with an inner sleeve 3 which is a friction fit on the spindle 1. Alternatively the friction surfaces may be conical, on the ends of the spindle, as at 5, or on a keyed-on ring as at 5', 5" in Fig. 3. Various forms of reinforced roller are described. In Fig. 10 the roller takes the form of a pneumatic tire 19 on a bushing 18 with a rubber or similar friction pad 12 interposed between it and the spindle 15.
Patent GB-967184-A (GB)
Title: Improvements in or relating to tined wheels for agricultural implements
IPC: A01D78/00
Filed: 1960-10-10
Abstract: The subject-matter of this Specification is included in Specification 967,181 but the claims differ.
Patent GB-1148366-A (GB)
Title: Apparatus for crimping textile fibres
IPC: D02G1/12
Filed: 1967-07-10
Abstract: 1,148,366. Stuffer boxes. ALLIED CHEMICAL CORP. 10 July, 1967 [8 Aug., 1966], No. 31701/67. Heading D1F. Stuffer box for crimping yarns, strands, slivers, or tows of natural, or artificial fibres, comprises a crimping chamber having a pair of side walls, a positively driven complementary pair of feed rolls having end faces, the feed rolls being disposed transversely adjacent to one end of the chamber and between the side walls, a pair of doctor blades forming the upper and lower portions of the crimping chamber and having a leading edge directly adjacent the feed rolls, a recess in each side wall of the chamber defining a back edge in the side wall, the leading edges of the doctor blades and the back edges of the side walls together bounding the opening to the crimping chamber, a pair of wear plate brackets positioned in the recesses, each bracket acoommodating a wear plate, and biasing means for pressure positioning the wear plates against the back edges of the side walls, and toward the end faces of the rolls. The biasing means respectively include fluid chambers disposed one on each side of the wear plate furthest from an end face of the feed roll, and a plunger in contact with a side of each wear plate bracket with a spring urging the plunger against the wear plate bracket to urge each wear plate against the back edge of the respective side wall. The feed rolls may have grooves or other indentations in their outer periphery.
Patent GB-1057215-A (GB)
Title: Improvements in and relating to radio transmission systems
IPC: H04B1/74
Filed: 1965-07-26
Abstract: 1,057,215. Radio signalling. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. July 26, 1965 [July 29, 1964]; No. 31749/65. Heading H4L. In a diversity system one of two signals received on different carrier frequencies at a radio relay station is selected in accordance with the difference in the noise levels as measured in the respective channels and is retransmitted on two further carrier frequencies. Fig. 2 shows the switching-over arrangement, noise signals corresponding to the two channels and derived, for example, from pilot signals transmitted outside the normal frequency band, being supplied at 26, 27, and converted into sinusoidal signals with an amplitude dependent on the noise level by amplitude modulators 31, 32 co-operating with a common oscillator 30. The required noise dependent signals are selected by filters 42, 43 and supplied via 45 degrees leading and 45 degrees lagging phase shifters 35, 36 respectively and adjustable attenuators 33, 34, to an add circuit 37 and a subtract circuit 38, in the portion shown attenuator 34 being short-circuited. The voltage V1 provided by input 26 and V2 provided by input 27 produce resultant voltages Vs and Vd at the output of adder 37 and subtractor 38 respectively. Assuming that attenuator 33 is set to 5 dB, if the noise level in that channel increases, the phase difference between V s  and V d  increases and it is arranged that at a phase difference of 90 degrees, i.e. when the noise level due to input 26 is 5 dB higher than that due to input 27, switch 11 is changed over to the other receiving channel and at the same time attenuator 33 is short-circuited and the short-circuit removed from attenuator 34. Similarly if the noise level due to input 2G then decreases until the 5 dB difference is reached the circuit will switch back to the position shown. The output of adder 37 is supplied through a 90 degrees phase shifter 46, limiter 49, differentiator 50 and limiter 51 which applies the resulting pulses to a gate 48. The output of subtractor 38 is supplied to a limiter 47 providing two outputs of opposite polarity, a selected output being supplied via changeover switch 54 to the gate 48, so that both inputs to the gate 48 will be present at the same time only when there is a phase difference of 90 degrees in the outputs from 37, 38 to operate the switching unit 12. The switch 54 is operated at the same time as switches 40, 41. Non- linear amplifier devices 55, 56 may be included in the input circuits.
Patent GB-861773-A (GB)
Title: Improvements in or relating to preparing concentrated fruit juice
Inventor: SMITH PAUL LEWIS
IPC: A23L2/10
Filed: 1959-09-17
Abstract: In preparing concentrated fruit juice by evaporating off water, a small amount of fresh fruit juice which has been subjected to an inert gas-stripping operation for removal of oxygen, is added and blended with the concentrated juice to restore its flavour, and the resulting blended juice is subjected to a flow of inert gas to prevent oxygen contamination.
Patent GB-395923-A (GB)
Title: Improvements in or relating to mattresses, pillows, cushions and the like
IPC: A47C27/16
Filed: 1932-11-10
Abstract: 395,923. Mattresses &c. HAESELI, J., 6, Grabenstrasse, Zug, and KœNZI, F., 14, Ferdinand Hodler-Strasse, Berne, both in Switzerland. Nov. 10, 1932, No. 31820. Convention date, Nov. 10, 1931. [Class 52 (iv).] The two parts of a divisible mattress, pillow, or cushion, &c., each comprise stuffing covered on the outside with ordinary covering material and on the side lying within the assembled mattress &c. with material having large perforations, e.g. webbing, gauze, or netting. The ordinary covering material 1 is provided along its edges with the elements 5 of a sliding clasp fastening for securing the two parts 10, 11, together and also adjacent its edges with an internal strip 2 to which the coarse mesh netting 3 may be attached.
Patent GB-172031-A (GB)
Title: Improvements in toy figures or objects made of paper or other flat, flexible material
IPC: A63H3/08
Filed: 1921-11-28
Abstract: 172,031. Finzi, T. Nov. 27, 1920, [Convention date]. Paper and like toys.-A toy figure or other small object is made by successively cutting out and folding a one-piece blank, printed on paper,. card, or other thin flat material, in such a manner that the use of adhesive, or fitting various parts into one another, is not necessary. Thus the blank shown in Fig. 8 can be formed into the figure shown in Fig. 9, by folding along lines indicated in the blank, the folds being so made that the dotted lines appear on the outside while the full lines are not seen when the fold is completed. Letters, numbers, or corresponding conventional signs may appear on the blank to indicate the manner of folding.
Patent GB-1511725-A (GB)
Title: Shock absorbers for motor vehicles
IPC: F16F7/08
Filed: 1975-07-30
Abstract: 1511725 Units providing resilience and friction damping A FREYLER and R RITTER 30 July 1975 [14 Aug 1974] 31833/75 Heading F2S In a telescopic shock absorber for motor vehicles, the cylinder contains resilient balls 4 (solid or hollow) separated by split rings 5, and the piston 3 consists of three co-operating wedgeshaped friction elements 7, 10 held together by springs 13.  The balls 4 are made of rubber or plastics, and are located by conical faces on the rings. The peripheries of the rings engage the cylinder wall to provide additional friction damping.
Patent GB-919187-A (GB)
Title: Production of sorbic acid
Inventor: CROCKER HENRY PETER
IPC: C07C51/09
Filed: 1960-09-16
Abstract: Sorbic acid is prepared by reacting ketene with crotonaldehyde in the presence of a condensation catalyst to form the intermediate lactone, which is heated with phosphoric acid to convert it to sorbic acid which is recovered.  Catalysts for the first stage may be barium, calcium, mercury, zinc, nickel, cobalt, and copper salts of aliphatic carboxylic acids such as acetic, propionic and sorbic, and zinc resinate is preferred.  The reaction may be at between 0 and 60 DEG C., and in an inert solvent or by passing gaseous ketene into crotonaldehyde liquid.  The catalyst may or may not be separated before the addition of phosphoric acid.  The mixture is reacted batchwise or continuously at a temperature between 50 and 200 DEG C., and the sorbic acid recovered for example by crystallisation or by co-distillation procedure.
Patent GB-537235-A (GB)
Title: Improvements in tubular rivets
IPC: B21C37/10
Filed: 1939-12-11
Abstract: 537,235. Metal tubes. GENERAL AIRCRAFT, Ltd., and COX, R. C. Dec. 11, 1939, No. 31964. [Class 99 (ii)] [Also in Group XXV] A split tubular rivet or spacer has inter-engaging portions 12 and is made from a stamped sheet-metal blank with opposed edges having the desired form. The rivet has one end flared at 13, the split widening at 14 and reducing the strain in the expanded edge. The interengaging portions may interlock, as at 22, Fig. 6, or 23, Fig. 8, to prevent the split from opening. To facilitate the bending up of the blank the edges with the projections may be curved to the desired radius in the blanking-out dies. A plain tubular spacing member may be formed similarly.
Patent GB-1236078-A (GB)
Title: Substituted azetidinols
Inventor: MILLER DAVID
IPC: C07D205/04
Filed: 1968-07-04
Abstract: 1,236,078. Substituted azetidinols. BEECHAM GROUP Ltd. 20 June, 1969 [4 July, 1968], No. 31969/68. Heading C2C. Novel substituted azetidinols of the Formula I wherein R is optionally substituted alkyl having 2 or more carbon atoms, cycloalkyl, aralkyl, aryl, alkoxycarbonyl or aryloxycarbonyl, or together with the quaternized nitrogen atom to which it is attached forms a cyclic structure, R 1  is OH or when R is alkoxy- or aryloxycarbonyl R 1  may be OH esterified by the same alkoxy- or aryloxy-carbonyl group; and R 2  is aryl and acid addition and quaternary ammonium salts of those compounds containing a basic N atom are prepared, when R is optionally substituted alkyl, cycloalkyl, aralkyl or aryl, by reacting the appropriate 2-arylepichlorohydrins with primary amines of the formula RNH 2 , and, if desired, forming the free bases and optionally converting these to acid addition or quaternary ammonium salts, or when R is alkoxy- or aryloxy-carbonyl and R 1  is OH esterified by the same alkoxy- or aryloxy-carbonyl group, by reacting azetidinols of Formula I above in which R is t.-butyl with alkyl- or aryl-chloroformates. Quaternary ammonium salts are obtained by reacting 2-arylepichlorohydrins with secondary amines of the formula R 3 R 4 NH in which R 3  and R 4  are optionally substituted alkyl, aryl or aralkyl or together with the nitrogen atom to which they are attached, form a cyclic structure. Pharmaceutical compositions, having activity on the central nervous system as depressants, contain the above novel compounds or salts thereof and pharmaceutically acceptable carriers.
Patent GB-1484803-A (GB)
Title: Electronic flash unit
IPC: H05B41/32
Filed: 1975-08-01
Abstract: 1484803 Electronic flash units FRANKE & HELDECKE GmbH 1 Aug 1975 [10 Aug 1974] 32227/75 Heading G2A An electronic flash unit comprises a flash tube 2 in series with a thyristor 3, a flash measuring device 16 for blocking the thyristor 3 after receipt of a predetermined quantity of light from the tube 2, a capacitor 12 connected in parallel with the thyristor 3 so as to charge during the time between blocking of the thyristor 3 and quenching of the tube 2 and means, preferably a lamp 15, to indicate when the charge on capacitor 12 reaches a predetermined level lighting up of lamp 15 thus indicates that device 16 has worked properly. When thyristor 3 is turned on again for the next flash, capacitor 12 discharges through it, if it hasn't already discharged through resistors 13, 14, so that lamp 15 is extinguished and ready for use again. In Fig. 1 the ignition circuit 5 to 8 ignites tube 2 and thyristor 3 simultaneously. In Fig. 2 (not shown) the tube (22) is ignited first, and the resulting voltage pulse through capacitors (29, 33) turns on the thyristor (23). In this circuit a resistor (32) has to be connected in parallel with the thyristor (32) and as a consequence diodes (37, 42) are connected in the charging and discharging paths of the lamp control capacitor (38). A prior art arrangement is described in which the flash tube is short circuited by a quench tube which lights up for a few milliseconds, light being transmitted from the quench tube to a fluorescent disc by a light pipe for indication purposes. The afterglow of.the disc makes this indicator arrangement ineffective when a rapid succession of flashes is used.