baber/WOPTO huggingface dataset:
Patent GB-1017469-A (GB)
Title: Impedance network for a.c. bridge circuits
Inventor: SILCOCKS ALAN HUBERT
IPC: G01R17/00
Filed: 1964-07-24
Abstract: 1,017,469. Measuring bridges. STANDARD TELEPHONES & CABLES Ltd. July 24, 1964, No. 29757/64. Heading G1U. An A.C. bridge of the kind having first and second test terminals and a guard terminal is provided with a network producing in parallel with the test admittance a backing off admittance of opposite sign to the test admittance; the magnitude of the backing off admittance being independent of test frequency and the network comprising two closely coupled inductance windings of which the first is connected between the first test terminal and the guard terminal and the second is connected between the second test terminal and the guard terminal over a reference admittance whose phase angle lies in the same quadrant as that of the test admittance. Fig. 1 shows an A.C. bridge having test terminals 2, 3 and guard terminal 4 of the kind adapted to measure admittance between terminals 2, 3 in presence of admittances between either or both terminals and guard terminal 4. A network of two close coupled transformer windings and a series capacitance C of impedance Z is connected as shown to terminals 2, 3, 4, and is equivalent to the network of Fig. 2, wherein if Z 1 , Z 2  are the winding impedances and Z m  is the mutual impedance and reduces to that of Fig. 3 wherein If the windings are equal series aiding, which is equivalent to that of Fig. 4, in which a negative capacitance of -C appears across terminals 2, 3 so that with the bridge controls zeroised the bridge is balanced for a test capacitance +C, and the balance point of the bridge may be offset any required amount by selecting a suitable value of C, so that in a bridge having 4 ranges of balancing decades and a ratio adjustable to 1/100 the revolution may be increased one hundredfold. In Fig. 5 an offset capacitance of decade variable magnitude is given by a transformer having plural equal windings 5-6, 6-7, 7-8..... 15-16; the number connectible between bridge terminals 3, 4 being selectible by switch S 1 . If the test capacitance Cx is lossy and the bridge comprises susceptance and conductance balances, a conductance G may be introduced in parallel to capacitance C with one end returned through switch S 2  selecting a point on the transformer winding, so that susceptance and conductance values may be independently backed off. The invention is applicable to the measurement of other admittances, and the test admittance is variable with regard to the backing off admittance by providing the first winding 5-6 with taps connected to one terminal of the test admittance. The taps on the windings may form a decade or binary sequence.
Patent GB-1477739-A (GB)
Title: Method of controlling tension of wound webs
IPC: H02P29/00
Filed: 1974-07-05
Abstract: 1477739 Automatic control. KATAOKA MACHINE PRODUCTS CO Ltd 5 July 1974 [6 July 1973]  29823/74 Addition to 1429565 Heading G3N [Also in Division B8]  A method of controlling the tension in a bound web roll comprises the steps of deriving a first signal representative of the amount of web wound on to the roll, computing from the first signal a second signal representative of a tension to be applied to the web during winding, which tension varies as a predetermined function of the amount of web wound on the roll and controlling the torque applied to the roll being wound in dependence upon the second signal. The predetermined function has the following equation: where T-is the tension applied, T a -the initial tension, α-a constant = the amount of web already wound on the roll, # = an integer. In operation the first signal L, Fig. 3, generated by a length setting unit 15 is fed to a calculation circuit 16, to which are also applied signals derived from units (2, 8), Fig. 2 (not shown) sensing web thickness and length already wound, respectively. The calculation circuit 16 computes the second signal as the derived tension and supplies a signal to a comparator 17 which is supplied with the actual sensed tension T from a tension detection unit 4, the comparator, forming a servo-control loop with an amplifier 18, torque actuator 11 and the unit 4 to regulate the torque applied to the web roll core 13 in dependence on the signal T.
Patent GB-674028-A (GB)
Title: Improvements in mining machines
IPC: E21C29/02
Filed: 1947-11-10
Abstract: 674,028. Planer mining-machines. MAVOR & COULSON, Ltd., and SPROUL, J. C. Jan. 24, 1950. [Nov. 10, 1947] No. 29826/47. Class 68 (i). In a double or single wedgeended planer the jacking means 22, for engagement between the roof and floor to take the thrust of the propulsion apparatus 19, 20 due to said apparatus acting on the cutter head during the cutting stroke, is disposed on the side of the propulsion means remote from the face and the propulsion apparatus and frame supporting the wedge heads may pivot about said jack means. About one portion of the cylinder 21 of the jacking means is formed a part-spherical collar 21A so that the jack can slide vertically and rock relative to a sleeve 27 disposed in a carriage 25 slidably supported on guides 23, 24 connected to the frame 17, 18 of the cutter heads 12. Specification 674,029 is referred to.
Patent GB-1183095-A (GB)
Title: Improvements in or relating to Communication Control Systems
Inventor: FRASER JOHN MCBRIDE
IPC: H04J3/17
Filed: 1967-06-28
Abstract: 1,183,095. TASI systems. WESTERN ELECTRIC CO. Inc. 28 June, 1967 [1 July, 1966], No. 29849/67. Heading H4R. In a TASI system, the number of trunks having access to the TASI equipment is varied in accordance with traffic conditions. As applied to the system described in Specification 891,993, the queue regsister which holds the codes of active but not yet assigned talkers is scanned, and a resulting pulse stream delivered to terminal FO indicates the number of talkers "frozen out", that is to say their speech is liable to be clipped. A pulse stream delivered to terminal TA represents the total number of talkers currently active. Amplifiers 225, 226 provide direct current voltages which are fed to a differential amplifier 228, and a voltage divider 227 is adjusted to determine a permissive freeze out fraction. Any output from amplifier 228, which indicates a deviation from this fraction, is rectified and controls the frequency of an oscillator 230 which delivers pulses to one or other of two relays IT, OT according to the polarity of the output as determined by a detector 233. Thus the number of trunks having access to the TASI equipment is increased or decreased at a rate proportional to the deviation from the desired freeze out fraction. Corresponding signals are sent by way of leads TDT, RDT to the remote terminal to prevent contrary action thereat. Arrangements are described for artificially marking trunks as busy when necessary.
Patent GB-733092-A (GB)
Title: Preparation of 2-mercaptothiazolone-5
Inventor: HOLLAND DAVID OLIVER
IPC: C07D277/36
Filed: 1952-11-26
Abstract: 2-Mercaptothiazolone-5 or a salt thereof is prepared by reacting aminoacetamide with carbon disulphide in a solvent followed by the gradual addition of a strong base such as sodium hydroxide and, after a period of time, e.g. one hour, acidifying the reaction mixture. The solvent is preferably alcohol, and in the case where the starting material is or contains aminoacetamide hydrochloride, the salt is preferably first neutralised by the direct addition of the full equivalent amount of a strong or weak base, and thereafter at least one mol. equivalent of strong base per mol. of aminoacetamide is gradually added.  In the example, sodium hydroxide is added to the neutralized reaction mixture over periods of half an hour and one hour.
Patent GB-1323591-A (GB)
Title: Benzodiazepine derivatives
IPC: C07D243/26
Filed: 1970-06-22
Abstract: 1323591 Benzodiazepines F HOFFMANNLA ROCHE & CO AG 22 June 1970 [23 June 1969] 30120/70 Heading C2C Compounds of the general formula (Y = C 2-10  alkylene or alkenylene; R<SP>1</SP> = H, halogen, CF 3 , NO 2 , C 1-7  alkyl, NH 2 ; R<SP>2</SP> = H, C 1-7  alkyl, OH, C 2-7  alkanoyloxy; R<SP>3</SP> = Ph optionally substituted by halogen, CF 3 , NO 2 , C 1-7  alkyl or NH 2 , or Py), their 4,5-dihydro and 4,5-dihydro-4-(C 1-7  alkyl) derivates and salts thereof are prepared by reacting a compound of the formula or 4,5-dihydro or 4,5-dihydro-4-alkyl derivative thereof with X-Y-Z (X = Cl, Br, I; Z = COOH or group convertible thereto), followed by conversion of Z to COOH if necessary and (optionally) salt formation. These compounds are anticonvulsants, sedatives and muscle relaxants, and may be administered in the form of pharmaceutical preparations containing them in association with a carrier.
Patent GB-483695-A (GB)
Title: Improvements in or relating to metal clad electric discharge vessels
IPC: H01J5/28
Filed: 1937-11-03
Abstract: 483,695. Discharge apparatus. SIEMENS & HALSKE AKT.-GES. Nov. 3, 1937, No. 30129. Convention date, Nov. 3, 1936. [Class 39 (i)] The metal envelope of an electric discharge vessel is formed in two similar portions, each carrying one electrode system and being formed with a fiange, which flanges are secured together, preferably by welding. The Figure shows a vessel consisting of portions 1, 2, welded together at the flanges 3, 4. Each portion is formed with a neck, and in the neck of the portion 1 is welded a, cylindrical member 6 to which the anode 10 is secured by an insulating member 9. A tube 14 serves as the anode lead and also as a pump connection, and is sealed into the cylinder 6 by glass at a point remote from the weld. To the neck of the portion 2 is welded a cylinder 7 which carries a cathode formed of a number of filaments 17 secured to a screen 16 which also serves as a return conductor. The discharge path is enclosed in a cylindrical screen 20 which carries a grid 23 and is secured in place by a spring 21 and wings 22, the screen grid and container being all, at cathode potential. In a modification the screen-20 is insulated and a variable control potential is applied to the grid.
Patent GB-215712-A (GB)
Title: Improvements in sealing together sheets of newspapers and the like
IPC: B65H45/30
Filed: 1923-12-03
Abstract: 215,712. Konta, A., (Assignee of Schiffer, A.). May 9, 1923, [Convention date]. Paper and like bags, making.-Paper bags are sealed along their edges by forming thereon an interlocking pattern or crimping 34, Fig. 5. The bags may be opened by tearing along a scored line, 33, or by running the finger between the edges so as to separate the interlocking crimpings 34. A machine for producing the scored line 33 and crimping 34 comprises rollers 5, 6 between which the papers &c. are fed by knurled rings 13. Keyed to the roller 5 are crimping and scoring rings 8, 9, held from longitudinal movement by sleeves 10. A ring 11 gearing with the ring 9 is loosely mounted on the top roller 6 so as to have limited longitudinal movement. A brush 30 may be provided for cleaning the ring 9. The lower roller 5 is pressed against the upper one by spring- controlled plungers working in hollow cylinders 14. The lower parts of these plungers are provided with gear wheels 16 engaged by worms 21 on a shaft 22, so that the height of the plungers may be adjusted according to the number of papers to be crimped together, by rotating the shaft 22 according to a scale on a gauge disc 27.
Patent GB-1156648-A (GB)
Title: Water Conditioning Composition
IPC: C02F5/10
Filed: 1967-07-03
Abstract: 1,156,648. Phosphate water-conditioners. FMC CORP. 3 July, 1967 [11 July, 1966], No. 30503/67. Heading C1C. Hexachlorobenzene or 1,2,4,5 - -tetrachlorobenzene are added to polyphosphates to retard their dissolution when they are used as water conditioners. Other additives for the conditioner are specified.
Patent GB-1518532-A (GB)
Title: Metered dispensing of fluid materials and products thereo
IPC: B65B3/16
Filed: 1975-07-22
Abstract: 1518532 Metering apparatus BOSTIK Ltd 22 July 1975 [23 July 1974 (2)] 30516/75 Heading B8N An apparatus for metering and dispensing fluids comprises a tube 5 through which the fluid is fed at a constant rate and means for injecting gas into the flowing fluid to form bubbles which separate the fluid into metered amounts. The gas serves to expel the fluid from the outlet of the tube on to or into a conserving medium. The fluid may be a hot melt adhesive which is deposited on to powder 65, Fig. 4, on a conveyer or toothpaste which is filled into a tube 60, Fig. 3. The toothpaste tube 60 is ejected from the tube 5 as it fills. The fluid may be heated by gas jets, Fig. 2 (not shown), as it is discharged. The gas is supplied by a dosing device 14 via cam controlled valves. Several apparatus may be used side-by-side.
Patent GB-1219274-A (GB)
Title: Cores for electrical coil assemblies
Inventor: FRY WILLIAM LAWRENCE
IPC: H01F41/02
Filed: 1967-07-03
Abstract: 1,219,274. Making transformer cores. JOSEPH LUCAS (INDUSTRIES) Ltd. 4 June, 1968 [3 July, 1967], No. 30525/67. Heading B3A. [Also in Division H1] A magnetic core for an electric coil is made from a rectangular (iron) sheet in which is formed a plurality of parallel slits extending laterally across part of the width of the sheet, the sheet then being folded concertina-fashion along the lines of the slits so that adjacent sections of the sheet are in facial contact. The slits preferably extend parallel to the shorter side and across the middle portion of the sheet (Fig. 1, not shown), the folds being made in the portions left at either end of each slit. The slits may be so spaced that the assembled core has an approximately circular cross-section. The sheet is coated with insulating material before it is folded.
Patent GB-1067056-A (GB)
Title: Improvements in and relating to the measuring of the yield of a source of a certain gas
IPC: C22B9/04
Filed: 1965-07-20
Abstract: 1,067,056. Measurement of gas yield. BAL-ZERS PATENT- und LIZENZ-ANSTALT. July 20, 1965 [July 23, 1964; Oct. 28, 1964], No. 30771/65. Heading B1X. The amount of a specified gas, for example carbon monoxide, given off by a gas source in unit time is measured by adding at a known rate an auxiliary gas, for example nitrous oxide, to the flow of gas evolved from the source, and measuring the partial pressures of the specified gas and of the auxiliary gas in the gas mixture. In the apparatus of Fig. 1, auxiliary gas from reservoir 3 is fed into the gas stream in the main pipe 1. Part of the resulting mixture is drawn off through pipe 5 by means of pump 7 and is fed to measuring chambers 11, 13 for measurement of the partial pressures of the auxiliary gas and the specified gas, for example by means of infra-red absorption, filter cell 25 being filled with the specified gas and filter cell 26 being filled with the auxiliary gas. Thermal conductivity cell 20 may be used to determine the partial pressure of for example hydrogen. Valve 10 (as shown) or valve 6 may be opertively connected with the partial pressure measuring device for the auxiliary gas in such a way as to maintain a predetermined constant partial pressure of the auxiliary gas in pipe 5; the apparatus may then be calibrated to give direct readings of the amounts of the specified gas evolved from the source.
Patent GB-932390-A (GB)
Title: Apparatus for marking the tyres of motor vehicles according to their unbalance
IPC: G01M1/26
Filed: 1959-09-09
Abstract: 932,390. Embossing or marking machines. D. HOFMANN. [trading as GEB. HOFMANN KOMM.-GES.]. Sept. 9, 1959, No. 30804/59. Class 100 (2). [Also in Group XIX] A wheel 14 is tested for unbalance and according to the result one or more marks are applied to it to indicate the angular position of the unbalance by a film-like colour ribbon 9 carried on reels 8 which is pressed on to the tyre and electricallyheated stamps 6, 7 applied to the other side of the ribbon so that one or more marks are left on the tyre. The stamps 6, 7 are carried in arms 4, 5 and consist of rods of copper (or other metal of good heat conductivity) carrying electrical heating resistances. The arms 4, 5 are rotated into position on the type 14 by a motor 10 in unison and singly according to the result of the test. This operation may also be manual and the rotatable arms may be replaced by members which can be lowered from above or moved laterally on to the wheel.
Patent GB-320534-A (GB)
Title: An improved hat and hood stretcher
IPC: A42C3/00
Filed: 1928-10-25
Abstract: 320,534. Roberts, F., Roberts, L. F., and Roberts, Ltd., F. Oct. 25, 1928. Stretching in manufacture.-A hat or hood stretcher comprises a hollow crown block constructed in two relatively adjustable halves, one 4 of which is fixed to a base 6 and the other 5 slidable thereon away from or toward the fixed half, the halves being lap-jointed for the entire transverse contour of the block. A shaped metal strip may be interposed between the opened block parts to preserve continuity of surface. The block may be heated by steam supplied to a duct 9, or by an electric resistance element 12. The part 5 may be moved by a screw 13, the hat being protected by a sleeve 17. An indicator 18 registers with markings on the base to gauge the head size to which the block is opened. In a modification, the block is expanded by a lever held in adjusted position by ratchet teeth each. of which corresponds to one hat size. The block may be perforated and steam admitted to thehat or hood under treatment.
Patent GB-995708-A (GB)
Title: Polyoxyalkylene glycol-containing metal working fluids
IPC: C10M173/02
Filed: 1963-08-06
Abstract: A metal working fluid comprises an aqueous solution of a polyoxyalkylene glycol and a salt of an alkanolamine and a dicarboxylic acid. The polyalkylene glycol may have a solubility in water which decreases with temperature increase and may be of 200-600 molecular weight.  The dibasic carboxylic acid may have 6-40 carbon atoms per molecule. The salt may be added directly to the composition or prepared in situ. The composition may also contain an alkali metal nitrite, e.g. NaNO2, a metal deactivator, e.g. a thiazole or benztriazole, and ethylene glycol. A suitable mixture contains 2-15% polyalkylene glycol, 5-20% alkanolamine, 2-15% polyalkylene glycol, 5-20% alkanolamine, 2-15% dibasic acid, 2-15% alkali metal nitrite and 0.01-1% metal deactivator. This may be diluted 20-100 times with water. It may have a pH of 7-8. Alkanolamines specified are mono-, di- and triethanolamine, monoethanolmethylamine, monoethanol-di-methylamine, diethanolmethylamine, monoethanolethylamine, monoethanoldiethylamine, diethanolethylamine, monoethanopropylamine, monoethanoldipropylamine diethanolpropylamine, monothanolbutylamine, monethanol-dibutylamine and diethanolbutylamine.  Di-basic carboxylic acids specified are: phthalic, terephthalic, succinic azeleic and sebacic acids and dimers of linoleic and linolenic acids.  Polyalkylene glycols used in the examples are polypropylene glycol-400 and polyethylene glycol-300.ALSO:A metal working fluid comprises an aqueous solution of a polyoxyalkylene glycol and a salt of an alkanolamine and a dibasic carboxylic acid.  The polyalkylene glycol may be a homopolymer or a random or block copolymer and may have a molecular weight of 200-600. Its solubility in water may decrease with temperature increase.  Alkanolamines specified are mono-, di- and triethanolamine, monoethanol methylamine, monoethanoldimethylamine, di-ethanolmethylamine, monoethanolethylamine, monoethanoldiethylamine, diethanolethylamine, monoethanolpropylamine, monoethanoldipropylamine, diethanolpropylamine, monoethanolbutylamine and diethanolbutylamine. Dicarboxylic caids may have 6-40 carbon atoms.  Acids specified are: phthalic, terephthalic, succinic, azelaic, sebacic, dilinoleic and dilinolenic.  The composition may also contain an alkali metal nitrite, e.g. NaNO2, a metal deactivator, e.g. a thiazole or benzotriazole, and ethylene glycol. A suitable mixture comprises 2-15% polyalkylene glycol, 5-20% alkanolamine, 2-15% dibasic acid, 2-15% alkali metal nitrite and 0.01-1% metal deactivator. This may be diluted 20-100 times with water and may have a pH of 7-8.  Polyoxyalkylene glycols used in the examples are polyethylene glycol and polypropylene glycol.
Patent GB-820276-A (GB)
Title: Improvements in glass fibres and the products thereof
IPC: B60C9/00
Filed: 1955-10-31
Abstract: Glass fibres especially of low soda-ash content are coated with an alloy comprising Pb and 0.001 to 10% by weight of the alloy of any one of Na, K, Mg, Ca, Zn, Sr, Ba, Al, Ga, Ti, Sn, Cr, Mn, Cd, Fe.  It is applied preferably by dipping the fibre into or drawing it through the molten alloy as described in Specification 747,453; and it may be a discontinuous coating (Fig. 2, not shown).  A lubricant such as the high molecular weight hydrocarbons, alcohols, esters, organo-siloxanes, or inorganic metal sulphides or chlorides, may be superposed.  Fibres may be twisted into yarn, and yarns into a cord. Fabric may be woven therefrom and made into composite products with binders such as rubber or plastic. The yarn is said to be particularly useful in reinforcing flexed articles such as tyres and belting.  The use of alloys of Pb with respectively 1% Zn, 0.01% Fe, 2% Sn, 1% Na, 0.1% Mg, 0.5% Al, is described.
Patent GB-230536-A (GB)
Title: Improvements in or relating to hot water boilers used in domestic fire-grates
IPC: F24B1/183
Filed: 1923-12-11
Abstract: 230,536. Stockdale, G. Dec. 11, 1923. 0 p e n fireplaces; grates; boilers, arrangement of. - A waterheating boiler for a domestic firegrate, constructed of tubular members disposed so as to form a base and rear grating for the fire, is disposed in a setting in which, provision is made for obtaining a reversed draught. In the example shown, the fire resting on the boiler, which comprises headers A, B joined by tubes C, can burn either with a natural or reversed draught, according to the position of the damper M. The boiler may be constructed either with the tubes C and upper header A in one piece joined to the header B, or each tube C may be made integral with a section of the upper and the lower header.
Patent GB-505571-A (GB)
Title: Improvements in free-wheel driving mechanism
IPC: F16D41/20
Filed: 1937-11-12
Abstract: 505,571. Moving signs. COLLYEAR, J. R. Nov. 12, 1937, No. 31122. [Class 3 (i)] [Also in Group XXIV] A vehicle route indicator comprises a band wound on a pair of rollers 12 and 13, Fig. 2, carrying worms 14 meshing with worm wheels 11 loose on a driving shaft 1. The wheels 11 are driven from the shaft through oppositelyacting free-wheel mechanisms, each comprising a coil spring 9, Fig. 3, embracing pair of sleeves of equal diameter, one sleeve 3 being fixed on the shaft 1 while the other sleeve 4 is integral with the wheel 11. An outer sleeve 7 enclosing the spring is held against rotation by projections 24 and is spaced from the spring for the greater part of its length, the spring having at one end a few turns of larger diameter contacting with the sleeve 7. When, the shaft 1 is rotated in one or other direction, one spring is contracted on to the associated sleeves 3 and 4 and away from the sleeve 7, and drive is transmitted to the associated wheel. The other spring is unwound, so freeing its sleeves 3 and 4, so that the associated wheel 11 is free to rotate in either direction. Specification 386,358 is referred to in the Provisional Specification.