baber/WOPTO huggingface dataset:
Patent GB-1198893-A (GB)
Title: Improvements in or relating to Pulse Generator Monitoring Circuit Arrangements
IPC: H04L7/00
Filed: 1968-01-24
Abstract: 1,198,893. Protective arrangements. SIEMENS A.G. 24 Jan., 1968 [25 Jan., 1967], No. 3712/68. Heading H2K. [Also in Divisions H3-H5] A circuit for monitoring two pulse generators TG11 and TG21, shown as switches in Fig. 3, comprises driving transistors T4 and T5 which are coupled to respective output stages T3 and T2 and to a common gate circuit T1 which is also coupled to the output stages. The effect of the circuit is that no output appears at A or B if both generators are operating in phase, pulses appear at both A and B if the generators are out of phase, and a fault in one of the generators causes a pulse output to appear only at the terminal corresponding to the generator still working. The transistors T4 and T5 are normally on and are cut off by negative pulses from the generators. If both the transistors are off simultaneously, T1 conducts and blocks both the output transistors T2 and T3. If T4 is on while T5 is off, T1 remains off and T2 conducts, so that in effect the input pulses at E21 pass to the output terminal B; similarly if T5 is on while T4 is off, output pulses appear at terminal A. Transistor T4 remains on if the generator TG11 fails either with contact a open due to base current flowing, or with contact a closed after the discharging of capacitor C1. The same circuit can monitor other pairs of pulse generators TG12 and TG22, and TG13 and TG23, operating at the same frequency and a further pair TG1n and TG2n which have a harmonically related frequency and are therefore provided with a separate input capacitor C2 and resistance R3. Any output pulses at terminal A or terminal B may operate indicator means and/or change-over means to substitute the output of the generator which is working for the faulty one.
Patent GB-539198-A (GB)
Title: Improvements in or relating to systems for transmitting frequency-modulated carrier-wave signals
IPC: H03C3/09
Filed: 1940-02-29
Abstract: 539,198. Stabilizing frequency-modulated carrierwave television and like signals. PERCIVAL, W. S. Feb. 29, 1940, No. 3759. [Classes 40 (iii) and 40 (v)] [Also in Group XXXV] Television and like signals having recurrent datum portions, which in the absence of fading would have a constant value, are transmitted by modulating the frequency of an oscillation in accordance with the amplitude of the signals, deriving from said modulated oscillation a correction signal the amplitude of which is determined by the displacement of the frequency of the component of said modulated oscillation representing the said datum portions from a predetermined value, and applying said correction signal to control the frequency of said oscillation in such a manner that variations of the frequency of said component are reduced. The correction may be obtained by the valve circuit 8, Fig. 6, and may be fed into the oscillator 1 which is modulated in frequency by the modulator 2, the modulated output being delivered through an amplitude-limiter 3 to a line 4 and the valve circuit 8. The line 4 may be connected to an aerial or a transmission line. Specifications 422,906 and 458,585 are referred to.
Patent GB-716867-A (GB)
Title: Improvements in or relating to the aromatisation of powders
IPC: A23L27/00
Filed: 1951-02-19
Abstract: 716,867. Coffee and tea extracts. BLENCH, R. O. Jan. 3, 1952 [Feb. 19, 1951: Oct. 30, 1951], Nos. 3932/51 and 25288/51. Class 129 A spray dried aqueous extract of dearomatized coffee (or tea) is aromatized by passing aroma laden nitrogen through a falling shower of powdered extract. The powder from a spray drier 2, is stored in closed, heated, collection chambers 1, and continuously passed in measured quantities to fall through an upper heated chamber 6, a heated zone 18 where the hot, aroma bearing nitrogen is introduced, a cooling chamber 15, and thence carried by a screw conveyer 20 through a refrigerated zone 21 from which the cooled nitrogen is recovered by a fan 53, and .the powder is collected in a receptacle 29. The nitrogen is heated and passed through a heated revolving cylinder, Fig. 4 (not shown, containing ground and roasted coffee, before being passed back through the coffee extract column. A number of alternative constructions for the treatment zones are disclosed.
Patent GB-382499-A (GB)
Title: Improvements in or relating to sparking plugs for internal combustion engines
IPC: H01T13/16
Filed: 1932-02-10
Abstract: 382,499. Sparking-plugs. TEBALDI, A., 18, Via Ilarione Petitti, Milan, Italy. Feb. 10, 1932, No. 4019. Convention date, Aug. 11, 1931. [Class 7 (iv).] A pin 13 is secured in, but spaced away from, the hollow electrode 8, its clearance being such that, when a predetermined temperature is reached, the other end of the pin engages the cooling-nut 7 and enlarges the heat - transference path from the hotter portion of the plug. The contacting surfaces may be at right-angles or oblique to the axis ; they may be conical and the outer end of the pin may be split. A deformable bimetallic pin may be employed. The material may be the same as, or different from, that used for the electrode.
Patent GB-451427-A (GB)
Title: Improvements in cable connectors for electrical distribution systems, specially applicable for neutral cable connections of switchboards, street boxes and the like
IPC: H01R4/30
Filed: 1935-02-08
Abstract: 451,427. Two-part couplings. CASTLE FUSE & ENGINEERING CO., Ltd., 33, Chester Street, and MORLEY, E. J., 68, Phoebe Anne Street, both in Liverpool. Feb. 8, 1935, No. 4044. [Class 38 (i)] Connection between a cable and a bus-bar or the like B is effected by means of a screwed stud 1 attached to the cable by a clamping head 2 and supported ir an insulating bush E ir the bus-bar B, a nut D or the bolt making contact witl the bus-bar when screwed down. The bolt is held in the bush by a pin 7 and the bush may be screwed into the bus-bar and project above the surface into a recess 13 in the nut D. A lock-nut 14 secures the nut D in either the raised or lowered position and the nuts are held captive on the bolt by a split-pin, or by riveting over the end of the bolt.
Patent GB-1450743-A (GB)
Title: Ring trip arrangement
IPC: H04M19/02
Filed: 1974-01-29
Abstract: 1450743 Ring trip Circuits INTERNATIONAL STANDARD ELECTRIC CORP 29 Jan 1974 [1 Feb 1973] 04070/74 Heading H4K A ring trip circuit includes either a magnetic field dependent resistor or a Hall effect device. Referring to Fig. 3 a magnetic field dependent resistor MFDR is positioned in an air gap in one limb of a transformer T4 which carries a shorted secondary winding N8 and a primary winding N7 on its centre limb, the primary winding being connected in series with one wire of the subscriber's line. When A.C. ringing current flows in the subscriber's line wires and through the primary winding N7, an induced current in the secondary winding N8 generates flux in the centre limb of the transformer which opposes that due to the primary winding current, and only a slight increase in flux is produced in the high reluctance right hand limb of the transformer having the air gap. However when the subscriber loops his line the D.C. current in the centre limb causes the left hand limb to saturate and a high magnetic flux is generated in the air gap causing a substantial increase in the resistance of the MFDR thereby operating ring trip relay RTr. The MFDR can be replaced by a Hall effect device. In an alternative arrangement, Fig. 4, a Hall effect device is situated in an air gap of a two limbed transformer core. The arrangement of resistor RS and winding N<SP>1</SP>7 is such that a negligible A.C. current will flow in winding N<SP>1</SP>7 whereas the impedance of the winding to D.C. is small. Hence when a D.C. loop current flows a substantial increase in flux is produced across the Hall effect device which may be coupled by circuitry as shown in Fig. 3 to a ring trip relay. A MFDR may equally well be used in this embodiment. In either embodiment the primary winding may be split with one half of the primary winding being connected in each line wire. A known arrangement utilizing photo diodes and photo transistors is described with respect to Fig. 1 (not shown). A delay circuit for delaying the operation of the ring trip relay until a fixed time has elapsed after the D.C. loop current starts to flow is shown in Fig 2 (not shown), the circuit including a Zener diode.
Patent GB-454128-A (GB)
Title: Process for the preparation of 1:1-dichlorethane
IPC: C07C17/087
Filed: 1936-02-11
Abstract: 1.1-Dichlorethane is made by treating vinyl chloride with hydrogen chloride below 35 DEG  C. in a suspension or solution of aluminium chloride in a chlorinated hydrocarbon. 1.1-Dichlorethane is mixed with aluminium chloride and vinyl chloride with cooling.  Hydrogen chloride is led in at 0 DEG  C. while stirring.  Fresh vinyl chloride is added and hydrogen chloride led in, and the process repeated several times.  Aluminium chloride is removed with water and any vinyl chloride separated by fractional distillation.  The mixture of vinyl chloride and excess hydrogen chloride prepared from acetylene and hydrogen chloride in the presence of mercuric chloride may be used and led into cooled dichlorethane containing aluminium chloride or passed up a tower in counter-current thereto.  U.S.A. Specification 1,900,276 is referred to.
Patent GB-460340-A (GB)
Title: Improvements in or relating to clutch plates
IPC: F16D13/64
Filed: 1936-02-11
Abstract: 460,340. Friction clutches. BORG & BECK CO., Ltd. Feb. 11, 1936, No. 4160. Convention date, Feb. 11, 1935. [Class 80 (ii)] A clutch plate comprises a disc 8 having radially-projecting tongues 12 spaced around its periphery, a friction facing 14 on one side of the disc secured to alternate tongues by rivets 15, a friction facing 16 on the other side of the disc secured to the other tongues by rivets 17, and cushioning members in the form of bowed spring plates 18 arranged in the spaces between the tongues, alternate plates being riveted at their centre to one of the facings while the other plates are riveted at their centre to the other facing. Alternate tongues may be offset from the plane of the disc, or adjacent tongues may be offset on opposite sides of the disc.
Patent GB-473228-A (GB)
Title: Improvements in rain covers for hats and caps
IPC: A42B1/18
Filed: 1937-02-12
Abstract: 473,228. Rain - covers for hats &c. McHALE, J. Feb. 12, 1937, No. 4279. [Class 63] A rain - cover for hats or caps has the under - brim or under - peak portion slit and provided with sliding-clasp fasteners for closing the slit. Preferably, the cover is of oiled silk of colour to match the hat or cap. The fasteners 11 may be at the back and front of the hat. The edge of the cover has a hem housing an elastic cord provided with a hook and an eye at its ends, which are secured together after the slits have been closed. A similar cord 23 may retain the cover in the longitudinal crease of a soft hat. In the case of a cap, the cover extends to the top of the sweat-band. being slit from the edge to near the top of the crown. From the lower edge of the sweat-band the slit is closed by a sliding clasp 33. The cover is pressed into the crease above the peak by an elastic cord 31a.
Patent GB-893688-A (GB)
Title: Improvements relating to means for forming waistband extensions
Inventor: CRUSE ADRIAN ROBERT
IPC: A41F9/00
Filed: 1960-02-06
Abstract: 893,688. Sewing machines. WALKER Ltd., THOMAS. March 8, 1961 [Feb. 6, 1960], No. 4282/60. Class 112. A work-holder, for use in producing a waistband extension having a lower layer of fabric 16 carrying spaced fastener hooks 5, 5a and attached by a peripheral seam to an upper layer 20 of greater width, comprises an elongated lower member associated with means adapted to engage with a fastener for positioning the lower layer against the lower surface of said member, and a relatively-movable upper member adapted to co-operate with the lower member for clamping the upper layer between said members, the peripheral edge of the upper member being adapted to serve as a tinplate, whereby said edge may be moved in contact with the presser foot of a sewing machine for stitching the layers together along the desired contour. The lower member comprises an elongated bar 2 which is formed with a notch 4 and an aperture 6, and which extends from a plate 3. The latter is formed at the end adjacent bar 2 with a transverse slot 17 and carries at its other end a transverse bar 7 formed in its under surface with a slot 18. The upper member comprises a transverse bar 15 attached by hinges 8 to bar 7, and an elongated bar 11 which overlies bar 2. A spring connected between bars 7 and 15 biases the upper member either to a raised position or to a closed and clamping position, when a vertical strip 12, attached to the periphery of bar 11, encloses the periphery of bar 2. With the upper member raised, the lower layer of fabric 16 is positioned against the undersurface of bar 2 with hook 5 engaged with notch 4 and hook 5a accommodated in aperture 6, the layer also passing through slots 17 and 18. The upper layer 20 is then placed upon bar 2 and the end of the layer is passed through slot 18. The upper member is then closed, and the layers are stitched together in a sewing machine, the presser foot of which is guided in contact with strip 12. The layers are then trimmed adjacent the seam and the finished article is turned inside out to expose the fastener hooks. It is stated that the upper member may be provided with an adjustable stop bar for limiting the movement of the presser foot in order to alter the length of the waistband extension.
Patent GB-179321-A (GB)
Title: Improved means for supplying current to valve amplifiers employed in wireless signalling
IPC: H04B1/16
Filed: 1921-02-05
Abstract: 179,321. Eckersley, P. P., Furnival, J. M., Velde, H. R. C. van de, and Stewart, J. Feb. 5, 1921. Combined transmitting and receiving arrangements.-The plate circuits of a transmittir.gvalve and a receiving-valve are both supplied by the same dynamo, and the change over from transmitting to receiving reduces the field strength of the dynamo and so effects a reduction in the voltage applied to the receiving-valve. The high-tension direct-current generator B is excited by a winding D which is connected across a low-tension source C either directly or through an adjustable resistance G according to the position of a switch E, which also determines whether the generator B is connected to energize the transmitting-valve F or the receiving- valve H. Additional contacts may connect the filaments of these valves across the low-tension machine C. Commutator noises are suppressed by an accumulator K and condenser P connected across the low-tension rotor C, and bv a series choke-coil L and shunt condensers M in the high-tension circuit of the receiving valve. A smoothing condenser N is also provided across the rotor B.
Patent GB-1183361-A (GB)
Title: Metal Salts of Phosphorus-Containing Phenolic Compounds and their use as Lubricant Additives
Inventor: COUPLAND KEITH
IPC: C10L10/00
Filed: 1967-01-28
Abstract: 1,183,361. Metal salts of phosphorus-containing phenolic derivatives. OROBIS Ltd. 25 Jan., 1968 [28 Jan., 1967], No. 4335/67. Heading C2C. [Also in Division C5] Metal salts of phosphorus-containing phenolic derivatives are obtained by reacting a complex phenol of the formula in which R is a hydrocarbyl radical, x is an integer from 1 to 4 and n is an integer from 0 to 4, with phosphorus pentasulphide or phosphorus pentoxide, adding an oxide, hydroxide or alcoholate of a metal of Group IIA of the Periodic Table and reacting the product with carbon dioxide. The radical R may contain from 4 to 20 carbon atoms, preferably from 7 to 12, and the integers x and n are preferably 2 and 1 respectively. More than the stoichiometric amount of the Group IIA metal compound required to neutralize the intermediate is preferably added, so that the final product will be " overbased ". The metal may be magnesium or strontium, or preferably calcium or barium. A mineral oil may be added to the reaction mixture before the addition of the Group IIA metal compound. The slurry formed on the addition of the Group IIA metal compound is preferably heated to between 100‹ and 180‹ C., and a vicinal glycol such as ethylene glycol may be added to the slurry. Any water present in the reaction mixture is preferably removed before carbonation takes place. Carbon dioxide is then blown into the mixture which may be maintained at between 80‹ and 180‹ C., and when carbonation is complete, any volatile constituents of the mixture are removed by distillation under reduced pressure. The compounds are useful as fuel or oil additives.
Patent GB-417910-A (GB)
Title: Improvements in or relating to lubricating devices for locks
IPC: E05B17/08
Filed: 1934-02-09
Abstract: 417,910. Lubricating lock bolts. JACKSON, L. MELLERSH-, Redroofs, Highfield Road, Bickley, Kent, and BEESLEY, R. P., 68, Birkhall Road, Catford, London. Feb. 9, 1934, No. 4396. Addition to 416,644. [Class 12 (iii).] The means, for lubricating locks, described in the parent Specification, is modified by the use of a leaf spring 8 which bears on the felt pad (not shown) with or without the interposition of gauze 5, and has a bent-over portion 10 which normally closes a filling aperture 7. The spring 8 has a portion 9 lying upon the bottom of the container 4 and bearing against the rim 11 thereof.
Patent GB-556470-A (GB)
Title: Improvements in or relating to printing telegraph apparatus and power driven typewriters
IPC: H04L17/24
Filed: 1942-04-02
Abstract: 556,470. Typewriters &c. CREED & CO., Ltd., SALMON, R. D., and MASON, F. P. April 2,1942, No. 4406. Addition to 534,206, [Group XL]. Drawings to Specification. [Class 100 (iv)] [Also in Group XL] Relates to type-printing telegraph receivers and power-driven typewriters of the kind described in the parent Specification 529,983 in which the typewheel is positioned under control of a member having rows of stops co-operating with detents controlled by selecting members and cams angularly disposed in a manner corresponding to the degree of movement permitted to the type-wheel by the respective rows of stops. According to the present invention, the angular spacing of the cams actuating the detents, which control the smaller degrees of movement of the type-wheel, is increased so as to permit complete actuation of the detents during the intervals allowed therefor.
Patent GB-309668-A (GB)
Title: Improvements in or relating to lamps
IPC: F21V14/06
Filed: 1928-02-13
Abstract: 309,668. West, J. Feb. 13, 1928. Lantern screens.-A vehicle lamp is provided with one or more prismatic glass plates adapted to be controlled by hand or by a distant control so as to rotate about an axis parallel to or coincident with the longitudinal axis of the lamp. In the form shown in Fig. 1, a handle h is provided so that a prismatic glass plate d carried by a rim e can be rotated with respect to a fixed prismatic glass plate a carried by a rim b which is detachably secured to the front of the lamp, screws g carried by the rim e engaging in a groove c cut in the rim b. In the form shown in Fig. 2a, a prismatic glass plate b is rotatably mounted on an axis i cemented to a fixed prismatic plate a. The plate b carries a strip k provided with pins l, l<1> adapted to engage holes in a ring f which is surrounded by a ring d carried by a rod c fixed to the plate a. The plate b is rotated by means of a Bowden wire g secured to the ring f and passing along a groove e in the ring d.
Patent GB-382503-A (GB)
Title: Improvements relating to the separation of acetic anhydride from admixture with acetic acid and water
IPC: C07C51/573
Filed: 1932-02-15
Abstract: In the separation of acetic anhydride from its mixtures with acetic acid and water by means of a solvent and a solution of a salt as described in the parent Specification, the salt solution is replaced by a finely-divided solid salt.  The salt may be one which combines with acetic acid or not.  In the first case the ratio of anhydride to acid in the extract may be as high as 12 : 1, while in the second case it may be 2 : 1.  Salts mentioned are sodium chloride and sulphate, ammonium nitrate, calcium chloride, and sodium acetate; mixtures may also be used.  In examples (1) benzene and sodium chloride are used, the extract being dried as described in the parent Specification and then distilled in vacuo; (2) benzene and sodium acetate are used.  Specification 194,719, [Class 2 (iii), Dyes &c.], is referred to.
Patent GB-534555-A (GB)
Title: Improvements in and relating to non-refillable bottles or the like
IPC: B65D49/06
Filed: 1940-03-09
Abstract: 534,555. Non-refillable bottles. LOSTUZZI, A., and LUCAS, J. A. March 9, 1940, No. 4469. [Class 125 (i)] To prevent fraudulent refilling, the neck 1 of a bottle is tapered and formed with shoulders 4, 5 normally supporting a hollow conical member 8 and a heavy ball member 11. A plug 6 with a central bore 7 is wedged into the bottle neck above the member 8, which is provided with projections 10 serving to limit the amount of movement of the member when the bottle is inverted.
Patent GB-1528801-A (GB)
Title: Cationic azo dyestuffs derived from imidazo(1,5a)pyridine
IPC: C09B44/00
Filed: 1976-01-27
Abstract: 1528801 Cationic monoazo dyestuffs derived from imidazo (1,5a) pyridine IMPERIAL CHEMICAL INDUSTRIES Ltd 27 Jan 1976 [3 Feb 1975] 4492/75 Heading C4P Novel dyestuffs devoid of CO 2 H and SO 3 H groups and of the formulawherein A is an aromatic carbocyclic group or a heterocyclic group which does not form a delocalized cationic dyestuff on quarternization; R<SP>1</SP> is an optionally substituted alkyl, alkenyl or cycloalkyl group; and X is an anion, are prepared by quaternization of dyestuffs of the formula in turn prepared by coupling diazotized amines ANH 2  with imidazo (1,5a) pyridine. They are used for dyeing synthetic polymeric materials, particularly textiles based on polyacrylonitrile, but also those based on polymers of dicyanoethylene and on acid modified polyesters and polyamides, in greenish yellow to brown shades.
Patent GB-832445-A (GB)
Title: Improvements in or relating to agricultural machines for use as seed planters and/orfertiliser distributors
IPC: A01C7/16
Filed: 1958-02-11
Abstract: 832,445. Seed planters, fertilizer distributers. STOKLAND, S. Feb. 11, 1958 [Feb. 20, 1957], No. 4509/58. Addition to 788,214. Class 6(1). A machine for use as a seed planter and/or fertilizer distributer comprises a rotatable cup 5 provided with an opening 10 through which flows material from a hopper 1<SP>1</SP> the material being distributed through ports 8, a container 23 for a second material being provided, the container discharging material into a second rotatable cup 26 provided with an adjustable opening 29 through which material flows to join the material in the cup 5.