baber/WOPTO huggingface dataset:
Patent GB-871956-A (GB)
Title: Improvements in or relating to subscribers' line circuits for automatic telephone systems
Inventor: IRELAND ERIC BERTRAM
IPC: H04Q3/00
Filed: 1956-12-24
Abstract: 871,956. Automatic exchange systems. AUTOMATIC TELEPHONE & ELECTRIC CO. Ltd. Nov. 27, 1957 [Dec. 24, 1956], No. 39155/56. Class 40 (4). In a system in which a common line-finder start relay ST is operated over a calling subscriber's loop in series with a resistor R1 and rectifiers MB1-MR3, a characteristic calling potential intermediate the voltages - 24 V. and - 50 V. across the relay operating circuit is obtained on a test wire SW until such time as a line finder LF locates the calling line, rectifier MR3 being then backed-off by earth potential from a battery feed relay A so that the common start relay releases and the test wire reverts to its initial free-line value of - 24 V. Outgoing calls. When the start relay ST is pulled up by a calling subscriber, the line finder drive magnet LFDM is operated. The switch is stopped when the calling line is found by operation of a line testing relay K from the test wire potential over wiper LF4. The battery feed relay A then pulls up over its upper winding and operates relay B to connect it to the calling line as well as applying busy earth to the P-wire over wiper LF1. Rectifiers MR1 and MR3 are now backed-off by potentials of - 50 V. and earth respectively applied over wipers LF2 and LF3, and relays ST and K in common equipment CE release. Relay BB transfers the common equipment to the next link connector LK2 in readiness for a subsequent call. Relay A remains held over the calling loop and setting up of the call may take place. When the calling party clears, relay A releases followed by B and BB, and the circuit is restored to normal. Incoming calls. A connector switch LC responds to dialling impulses. If the called subscriber is free, the voltage of - 50 V. at resistor R1 pulls up relay H over wiper LC1 and the P-wire. Relay H holds over a second winding, and applies busy earth to the P-wire as well as connecting ringing current RC to the line over a winding of a relay F and wipers LC2, LC3. When the called subscriber answers, relay F pulls up over the line loop and holds over a second winding. Ringing current is then interrupted. The connector is freed when relays F and H fall back on completion of the call.
Patent GB-339812-A (GB)
Title: Improvements in operating rear blinds of motor vehicles
IPC: B60J1/20
Filed: 1929-12-28
Abstract: 339,812. Lester, J. S. Dec. 28, 1929. Anti-dazzle screens. -In an arrangement for operating the rear blind or anti-dazzle screen G of a motorvehicle by means of suction from the induction pipe of the engine, a non-return valve B and a vacuum chamber C are inserted in the pipe system so that the vacuum may be maintained and the blind held in its drawn position until a tap D under the control of the driver is rotated to place the system into communication with the atmosphere. In the construction shown the blind G is mounted on a spring roller H and is connected at its lower end with a piston F slidable in a cylinder E, which communicates through pipes K, L, A and the elements B, C, D specified with the induction pipe of the engine.
Patent GB-1104920-A (GB)
Title: Process for the manufacture of vinyl chloride from contaminated 1,2-dichloroethane
IPC: C07C17/383
Filed: 1966-09-06
Abstract: Vinyl chloride is produced by the incomplete thermal cracking of 1,2-dichloroethane at 450 DEG  to 650 DEG  C. and at 8 to 40 atmospheres absolute, in the absence of catalysts, the gaseous effluent from the cracking zone (i.e. vinyl chloride, hydrogen chloride, 1,2-dichloroethane and by-products) being partially condensed and subjected to a first distillation stage in which hydrogen chloride is distilled off and subjected to a second distillation stage to recover the vinyl chloride, the residue from the second distillation being further distilled to give a sump product containing high-boiling impurities and a distillate comprising 1,2-dichloroethane and low-boiling impurities, the distillate being mixed with fresh 1,2-dichloroethane and recycled to the cracking zone.
Patent GB-1320228-A (GB)
Title: Printing machinery
IPC: B65H31/00
Filed: 1970-08-21
Abstract: 1320228 Delivering sheets ADAMOVSKE STROJIRNY NARODNI PODNIK 21 Aug 1970 [29 Oct 1969] 40354/70 Heading B8R A sheet delivering table 6 is arranged for adjustment in both the horizontal and vertical directions by being mounted on a bar 1 which may be displaced to various positions in vertical guide slots 13<SP>1</SP> (provided on frame members 12) and which passes through guide slots 13 provided in extension arms 7 of the table. The bar may be adjusted to occupy various positions along the slots 13. The bar is provided with two sets of locking means whereby it may be locked in selected positions in both the slots 13<SP>1</SP> and the slots 13. The angle of the table is adjustable by bar 16 which may engage pin 17 at various points.
Patent GB-918050-A (GB)
Title: Improvements in and relating to anchoring surface coatings to cellulosic surfaces
IPC: C08J7/048
Filed: 1959-11-27
Abstract: A reaction product of polyethylene imine and an aldehyde is used in solution as an anchoring agent for nitrocellulose lacquers on cellulose sheets (see Group VIII).  Specified aldehydes are formaldehyde, paraformaldehyde and acetaldehyde.  The reaction products are formed by merely adding the aldehyde to an aqueous solution of the polyethylene imine which may also contain ethylene glycol.  A softener such as glycerol may be added.  An example of a nitrocellulose lacquer is given which contains conventional plasticizers, blending resin and solvents as well as an organic acid condensation catalyst.
Patent GB-1223562-A (GB)
Title: Improved method of preparing oleophilic compounds
Inventor: DODSON STANLEY CHARLES
IPC: B02C23/06
Filed: 1967-09-05
Abstract: 1,223,562. Non-aqueous dispersions. BRITISH PETROLEUM CO. Ltd. 15 Aug., 1968 [5 Sept., 1967], No. 40445/67. Heading C1A. [Also in Division C5] A dispersion of oleophilic graphite or an oleophilic metal sulphide (e.g. MoS 2 , WS 2  or SnS 2 ) is prepared by grinding the graphite or metal sulphide in an organic liquid in the presence of a load-carrying additive to a surface area of at least 20 m.<SP>2</SP>/g. In an example the solid was graphite, the organic liquid was petroleum ether 70-90‹ C. and the loadcarrying additives were zinc dialkyl dithiophosphate and chlorinated paraffin. Additives specified are CCl 4 , chlorobenzyl esters of alkyl xanthic acids and of thioacids, chlorinated hydrocarbon waxes, diphenolpolysulphides, alkyl and aryl thioethers, thiocarbonates, thiocarbamates, S-substituted carboxylic acid esters, sulphurized butadiene/styrene copolymer, sulphurized polyalkylene glycols, alkyl and aryl disulphides, phosphorosulphurized materials, tricresyl and trialkylphosphates, metaldialkyl dithiophosphates, organotindithiophosphates, lead naphthonate phosporamidates, nitrobenzenes, nitronaphthalenes, aminophosphates, tetraalkylammoniumphosphates and thiophosphates, rhodamine and derivatives thereof. The organic liquid may be a light hydrocarbon, CCl 4 , i-propanol, a silicone fluid or a mineral lube oil. The process may be performed in a vibratory ball mill and temperatures up to 400‹ C. are referred to. The oleophilic graphite or sulphide may be removed from the dispersion by boiling off the organic liquid (if desired after replacement of a high boiling liquid by a low boiling liquid for filtration, and the product dried in a vacuum oven.
Patent GB-1487563-A (GB)
Title: Fast-setting varnishes
IPC: C08G18/42
Filed: 1974-09-17
Abstract: 1487563 Polyurethane varnishes VEBACHEMIE AG 17 Sept 1974 [18 Sept 1973] 40494/74 Heading C3R Polyurethane varnishes comprise, dissolved in a solvent having a b.p. of at least 110‹ C., (a) 50 to 90% by weight of a hydroxyl groupcontaining polyester which has a hydroxyl number of 50 to 150 and which is formed from (i) a diol and/or a polyol and (ii) an aromatic dicarboxylic acid and, optionally, an aliphatic or cycloaliphatic dicarboxylic acid, the molar ratio of the aromatic to aliphatic or cycloaliphatic dicarboxylic acids being greater than 4 : 1 and (b) 10 to 50% by weight of an adduct of isophorone diisocyanate and #-caprolactam, at least 95% by weight of the isocyanate groups of the diisocyanate being blocked by the lactam. In a typical example, a polyester prepared by reacting terephthalic acid dimethylester, a 2,2,4- and 2,4,4 - trimethylhexanediol - 1,6 - isomer mixture and trimethylolpropane is mixed with the blocked adduct in a solvent comprising a commercial aromatic mixture and ethylglycol acetate. The varnishes are particularly suitable for the coating of metallic surfaces.
Patent GB-1326063-A (GB)
Title: Photocell checking circuit for optical weighing scale
IPC: G01G23/18
Filed: 1970-08-24
Abstract: 1326063 Photo-cell checking circuit HOBART MFG CO 24 Aug 1970 [15 Sept 1969] 40713/70 Heading G4H In weighing apparatus wherein a load causes the vertical displacement of a coded plate, the image of which is projected by a lens on to a slitted mask, a plurality of photo-cells behind the slits giving a binary output representative of the weight, a circuit adapted to check for the correct opertion of the cells is provided. Pulses from a clock (42), Fig. 2 (not shown), are fed to a dividing network (43) which sequentially energizes groups of photo-cells, preferably lightsensitive resistors, the cells preferably all being simultaneously illuminated via a transparent portion of the coded plate or by an auxiliary source, the outputs of correctly functioning cells producing positive outputs on the lines 45<SP>1</SP>- 48<SP>1</SP> via associated flip-flops. If all cells energized at one time are functioning correctly, a negative potential appears at the output of GD which is applied to a gate GE together with positive pulses derived from lines f8<SP>1</SP>, CP/2, f5<SP>1</SP>, also from the network (43). The appearance of all positive inputs to the gate GE, indicative of a cell failure, causes a negative potential to be applied at R to a flip-flop XA resulting in a negative level at output Q, which output in other events is adapted to be positive. A checking cycle is initiated by operation of a switch 65 causing a negative pulse at an input S of a flip-flop XB causing a positive potential at an output Q which potential causes illumination of a lamp 24. After the sequential energizing of all cells, the end of a checking cycle is brought about by positive potentials on the lines f8<SP>1</SP>, CP/2 which are inputs to a gate GF which will then deliver a positive output if the output from the point Q of flip-flop XA is positive, i.e. no negative pulse has been received during the cycle at the point R, which output, after inversion at ID delivers a negative input at T of XB causing the output at Q to revert to its normal negative state causing the extinguishing of the lamp 24. If the output at Q of XA is negative, i.e. there has been a cell failure, no negative pulse will be received at T of flip-flop XB and continued illumination of lamp 24 indicates a cell failure.
Patent GB-1539469-A (GB)
Title: Centrifugal pump
IPC: F04D7/04
Filed: 1976-10-01
Abstract: The gap between the, e.g., screw-shaped impeller blade (3) and the casing (17) should be as small as possible to achieve high efficiency. In order to counteract the accumulation of solid particles in the gap and the friction resistance produced as a result, the gap has a portion (g), whose cross-section is trapezoidal, which expands towards the suction side with an angle (e) between 15 and 40 DEG , and is bounded by a bevel at the outer blade rim. The remaining gap part, bounded by the peripheral surface (f), is preferably narrower than half the blade thickness (d). Alternatively, the cross-section of the entire gap may be trapezoidal. In that case, the blade (3) has an edge instead of the face (f). <IMAGE>
Patent GB-864610-A (GB)
Title: 4-hydroxy-3-keto-steroids and derivatives
IPC: C07J1/00
Filed: 1957-03-27
Abstract: The invention comprises 4-substituted-steroids of the general formula:  <FORM:0864610/IV (b)/1> wherein R represents =(H) OR11, =O, or =(alkyl)OH, R1 represents (H)H, (H)OH or =O and R11 represents an acyl group or hydrogen, and the preparation thereof when R11 represents hydrogen by reacting a 4, 5-epoxy-19-nortestosterone of the general formula:  <FORM:0864610/IV (b)/2> or <FORM:0864610/IV (b)/3> wherein R and R1 have the above significance, with a mineral acid which does not contain halogen in an organic solvent, and when R11 represents an acyl group by acylating the 4-hydroxy compound thus produced.  In an example 19-nor-D 4-androstene-4, 17b -diol-3-one 17-acetate is prepared.  Specification 864,607 is referred to.ALSO:A therapeutic composition comprises at least one 4-substituted steroid compound of the general formula <FORM:0864610/VI/1> wherein R represents (H)OR11, O or (alkyl)OH, R1 represents (H)H, (H)OH, or O, and R11 represents an acyl group or hydrogen, and a pharmaceutical acceptable carrier therefor, e.g. a liquid to form a suspension or solution for administration orally or by injection, or an ointment base for topical administration, or a solid.  The compounds may also be enclosed in a capsule.
Patent GB-1420857-A (GB)
Title: Automatic detection of the central axle of a rail vehicle
IPC: B61L1/16
Filed: 1973-08-31
Abstract: 1420857 Interrogation system SIEMENS AG 31 Aug 1973 [4 Sept 1972] 41206/73 Heading B7H The interrogation system for identifying rail vehicles described in Specification 1,341,258, which includes an axle counting arrangement for detecting vehicles without an answering unit or in which the unit is inoperative and which requires on vehicles bearing an odd number of axles that the vehicle answering unit be disposed above the middle axle is modified to allow its use with odd axled vehicles where the construction does not allow the answering unit to be so disposed. The axle counter 5 is provided with two operational zones overlapping by distance L and is disposed at a distance D from the operational zone W of the interrogating unit 4 such that where A is the smallest distance between wheels of a vehicle, and the answering unit on a vehicle is disposed in a zone 7 having a length M such that
Patent GB-854307-A (GB)
Title: Improvements relating to containers
IPC: B65D25/02
Filed: 1958-12-22
Abstract: 854,307. Stoppers. AMERICAN CAN CO. Dec. 22, 1958 [March 13, 1958], No. 41304/58. Class 125(3). A normally sealed container has a conduit 10 for equalizing the external and internal pressure on its walls, the conduit 10 being governed by a non-return valve formed by flat thermoplastic tubing 14 free at its end remote from a stem 12 over which it is slipped. The stem 12 is mounted in a plug 28 of resilient material carrying a nozzle 18 and held in an aperture in an end wall 4 of the container by a bead 30, the nozzle 18 being closed by a cap, Figs. 1 and 3 (not shown), connected to the plug 28 by a flexible strap 26. The body wall 8 of the container, which is cylindrical, is of plastics material. In a modification, Fig. 3 (not shown), the stem is mounted directly in a wall of'the container. Specification 798,069 is referred to.
Patent GB-1018188-A (GB)
Title: Method for testing the chemical and/or physical condition of media
IPC: G01N33/12
Filed: 1962-11-01
Abstract: 1,018,188. Electrically determining a chemical or physical condition. N. KAISER. Nov. 1, 1962, No. 41365/62. Heading G1N. A method of testing the chemical and or physical condition of a medium in which a plurality of tests are carried out simultaneously, or in continuous sequence, comprises directing high frequency waves either as a continuous band or at a plurality of individual frequencies on to the medium either simultaneously or in continuous sequence, or in a continuous sequence of scans, the period of scan being substantially shorter than the expected life of intermediate products, each of the tests involving the measurement of a phase shaft, and/or energy variation, and or alteration of some other electrical quantity, at at least one frequency, resulting from their impinging on the medium, and the results being registered continuously and individually. The waves may be applied in pulses, and the frequency chosen may be such that phase changes are an indication of dielectric constant, or that molecular resonance occurs within the medium. The medium may be situated within a tubular conductor and may be irradiated by a beam at the Brewster angle. The specimen and a reference sample may be included in the arms of a bridge. Applications of the invention referred to are the control of maturing and polymerisation in artificial silk, chemical analyses, the manufacture of insulation, the control of aging processes, the measure of hygroscopic properties and water content, the detection of changes in bacteriological cultures including short lived intermediate products, and the continuous indication of the decomposition of albumen.
Patent GB-1137711-A (GB)
Title: Improvements in push-button switches
Inventor: QUINT BERNARD HENRY JOHN
IPC: H01H1/40
Filed: 1964-10-10
Abstract: 1,137,711. Switches held set and freed mechanically. MILLS & ROCKLEYS (ELECTRONICS) Ltd. 10 Jan., 1966 [10 Oct., 1964], No. 41443/64. Heading H1N. An electric switch comprises a contact bridge 4 carried by a push-button 3 which is slidable over the surface of a printed circuit board 2 to cause co-operation of the bridge 4 with contacts printed on the board. The switch may be normally open, normally closed or change-over. The button 3 embraces one edge of the board 2 and is biased outwardly by a spring 7. A stop 3s on the button co-operates with a latch-retaining member 9 to prevent the button springing off the board. In a gang of push-button switches the member 9 is pivoted about an axis parallel to the board 2 and cooperates with a cam surface 3r on the button to hold it depressed until another switch button is depressed to release it. The button carries three bifurcated bridges which co-operate with one surface of the board. In an alternative arrangement each button has a bridge cooperating with opposite sides of the board. One of the switches of such an arrangement can only be unlatched by a special release button. This is achieved by providing on the member 9 opposite the release button 3 of this latch a spring member spaced from the latch 9 which normally retains the button, the space between the spring member and latch 9 being taken up on depression of a further switch button without releasing the initially depressed button. The release button has a high rise cam surface. The top of the button may be transparent and contain a neon indicating lamp wired to the bridging contacts.
Patent GB-1208559-A (GB)
Title: Apparatus for controlling a combined heating boiler for service water and central-heating water
Inventor: BRANDL WILLI
IPC: F24H9/20
Filed: 1969-08-20
Abstract: 1,208,559. Automatic temperature control systems. W. BRANDL. Aug.20, 1969 [May 30, 1969], No. 41592/69. Heading G3R. A boiler has a separate storage vessel 8 for service water and at least one through flow vessel 7 for central heating both situated in an air evacuated sealed space above a fluid vapourization bath 4 heatable by an electrically controlled source e.g. oil or gas. The source is controlled by an adjustable change-over thermostat 17, 18 in one position, and in another position by a boiler thermostat 15, 16 which can be set at a lower temperature. In the other position a shut off element e. g. a valve or pump 12 for central heating water is operated through a further sensor 24 e.g. responsive to space, outside, or feed water temperature. As long as the thermostat 17, 18 is below the set temperature the heat source is continuously switched on but above this temperature the heat source is controlled by the thermostat 15, 16. A master safety switch 22 disconnects the circuit above an absolute pressure of, say, 0À7 atmospheres.
Patent GB-1199330-A (GB)
Title: New Aminoalcohols and Process for Preparing Same
IPC: A61K31/135
Filed: 1967-09-12
Abstract: 1,199,330. Aminoalcohols. RICHTER GEDEON VEGYESZETI GYAR RT. 12 Sept., 1967 [24 Sept., 1966], No. 41645/67. Heading C2C. Racemic and optically active compounds of the general Formula (I): (R 1  = H, halogen, C 1-5  alkyl or alkoxy; R 2 =H, C 1-5  alkyl; R 3 =H, branched alkyl, cycloalkyl, alkenyl, alkynyl, aralkyl; R 4  = cycloalkyl, alkenyl or (when R 3  is not H) branched alkyl; or NR 3 R 4  = heterocyclic ring provided that when the ring contains a further heteroatom it is not N) and their acid addition salts, are prepared by (a) reacting a compound of the Formula (II): (X=halogen) and/or a compound of the Formula (III): with R 3 R 4 NH and reducing the resulting nitrophenylalkanolamine, (b) hydrolysing or alcoholysing a compound of the Formula (IV): (R 5  = alkanoyl, aroyl, alkylsulphonyl, arylsulphonyl), (c) hydrogenolysing a compound of the Formula (IV) but in which R 5  = alkylsulphonyl, arylsulphonyl, benzyl, or (d) reducing a compound of the formula in one or two steps, optionally followed by salt formation. If an optically active product is required an optically active starting material may be used or resolution effected at any desired stage. The above compounds are antidepressants and hypotensive agents, and may be administered in the form of pharmaceutical preparations containing them in association with a carrier.
Patent GB-1142880-A (GB)
Title: Improvements in electrical circuits
IPC: H03G1/00
Filed: 1966-09-19
Abstract: 1,142,880. Measuring blood pressure. INTERNATIONAL BUSINESS MACHINES CORP. 19 Sept., 1966 [20 Oct., 1965], No. 41653/66. Heading ASK. [Also in Division G3] A blood pressure measuring system includes a circuit for periodically establishing a predetermined voltage for a predetermined period across a device such as a thermistor or, as shown, a photocell 12, the circuit comprising a series transistor Tl connected to control the photocell current, a capacitor C for applying a variable control voltage starting at a datum level to the transistor Tl, and a detector, e.g. a Schmitt trigger 20, operable when the voltage across the photocell 12 is equal to the said predetermined voltage to prevent further variation of the control voltage. In the embodiment shown the photoelectric cell 12 is incorporated in a blood pressure measuring transducer 10, 11 and the current in photocell 12 is set to give the desired voltage output prior to each blood pressure measurement. Thus, under the control of circuit elements 15 to 19 the capacitor C is initially discharged to produce minimum current through the photocell 12; after a predetermined time delay a transistor T2 is rendered conductive and the capacitor C commences to charge, the voltage on capacitor C being applied over a double emitter follower T3, T4 to the base of transistor T1 which thus controls the current through the photocell 12. When the voltage on the photocell reaches the predetermined value the Schmitt trigger switches and applies a signal to element 19 which operates to stop the charging of capacitor C; the then voltage level on capacitor C continues to be applied to the base of transistor T1 so that the said predetermined voltage is maintained across photocell 12 whilst blood pressure measurements are made. The cycle for discharging capacitor C and then charging it to a desired level is repeated at desired time intervals under the control of signals generated by the control element 15. The photocell is included in a cuff used to occlude blood flow in a patients finger and, when the pressure exerted by the cuff is allowed to decrease linearly, the photocell, by registering the amount of light transmitted through the finger, indicates when blood is beginning to flow.