baber/WOPTO huggingface dataset:
Patent GB-899134-A (GB)
Title: Improvements in or relating to exchange terminal equipment for use with time division multiplex tran mission systems
Inventor: FLOWERS THOMAS HAROLD
IPC: H03K9/02
Filed: 1958-10-02
Abstract: 899,134. Pulse modulation circuits. POSTMASTER GENERAL. Jan 1, 1960 [Oct. 2, 1958], No. 31484/58. Class 40(5). Relates to apparatus for modulating and demodulating amplitude modulated pulses in exchange terminal equipment. The modulator, Fig. 1, includes a saturable core inductor having a substantially rectangular hysteresis loop and provided with biasing windings 1, audio signal input windings 2, a pulse input winding 3 and an output winding 4. A twowire line supplies audio frequency signals to the windings 2, and is supplied with direct current by a battery B via resistors R2 and the windings 1, the windings 1 being such that the core normally is saturated. The winding 3 is provided with pulses from a source PS1 and the output winding 4 is connected via a rectifier MR1 to common highway H1 having a transistor amplifier VT1. When a pulse is supplied from the source PS1 the core becomes unsaturated thus producing a pulse in the output winding 4 and this pulse is amplitude modulated by the audio signal present on the windings 2. At the demodulator, Fig. 2, a highway H2 is connected via a gating transistor VT2 and rectifier MR2 to one end of the input winding of a transformer T2, the other end being connected to a source of negative pulses PS2 which control the transistor VT2. The rectifier MR2 decouples the transformer T2 from other such transformers connected to transistor VT2. The incoming positive going pulses are supplied to the transformer T2 only in the presence of a gating pulse from PS2 and the output winding of transformer T2 is arranged so that during this period it supplies a voltage of such polarity that the transistor VT3 is in a high impedance condition. At the end of a gating pulse, or highway pulse, whichever is earlier, the flux in the core of T2 decays and an e.m.f. is induced in the output winding making the transistor VT3 conductive. The resistance of the output circuit is now so low that the duration of the output pulse is long compared with the duration of the gating pulse, and this pulse lengthening partly demodulates the incoming pulse train. Demodulation is completed by a low-pass filter C2, C4, LI. The modulator and demodulator may be connected via a hybrid transformer to form a line terminating equipment in a telephone exchange, Fig. 3 (not shown). Specifications 866,429 and 899,136 are referred to.
Patent GB-174468-A (GB)
Title: Improvements in and relating to tyre gauge caps
IPC: B60C23/00
Filed: 1920-11-08
Abstract: 174,468. Fulverman, I. Nov. 8, 1920. Protecting-covers. - A protective cap for a tyre gauge comprises a glass tube closed at one end and open at the other, a metal base, and a yielding connection for securing the glass tube to the base. As shown in Fig. 8 the open end of the glass tube 1 is provided with a shoulder 2 and the base 5 is screwed on to the gauge stem 16 and has a socket 7 into which the tube is placed. The thin upper end of the walls of the socket are bent over the shoulder to yieldingly hold the tube in position and the tube rests on a yielding washer 8. Various modifications of the means for holding the tube in the socket are described and illustrated in Figs. 3, 6, and 11. In Fig. 11, the shoulder 2 of the tube is replaced by a groove, and a thin projection 15 on the socket is shaped to fit the groove.
Patent GB-862970-A (GB)
Title: Method of and machine for testing the balance of rotatable bodies
IPC: G01M1/22
Filed: 1958-10-03
Abstract: 862,970. Rotor unbalance. JACKSON, E. R. Aug. 13, 1959 [Oct. 3, 1958], No. 31583/58. Class 40 (1). The dynamic unbalance of a rotor 1 (Fig. 1) is sensed by an electrical pick-up 5 which feeds the signals to a rectifier meter 8, indicating the magnitude of the unbalance, and also to a bi-stable multivibrator 15 fed with a reference voltage from a generator 14 driven on the same shaft 3, the phase angle between the unbalance and reference voltages being indicated on a meter 16, whereby the phase position of the unbalance mass on the rotor 1 can be determined.
Patent GB-1434041-A (GB)
Title: Data input/output devices
IPC: G06F13/12
Filed: 1973-07-03
Abstract: 1434041 Input/output device SIEMENS AG 3 July 1973 [4 July 1972] 31674/73 Heading G4A [Also in Division H4] An input/output device is arranged to control data transfers between one or more peripheral devices and a central unit in response to channel commands, the device being arranged inresponse to the appropriate commands to derive main store addresses for the transfers from the command and to receive such addresses from the peripherals. The device is shown connected between peripheral PE (several may be provided with priority resolution of simultaneous requests) and central unit ZE. In "normal" operation the device controls data transfers between the peripheral and locations in store ASP addressed in response to channel commands provided by the central unit and loaded in register BFR. Block transfers are controlled by commands specifying a zone in store ASP, the current transfer address, stored in register ADRR, being incremented or decremented until the transfer is complete. The device also operates in response to an appropriate channel command to transfer data to and from store locations addressed by the peripheral(s), in one of two modes. In the first mode the peripheral sends a transfer request PA and a store address on line DE, the address being loaded in register ADRR and a bit R is set to indicate receipt of the address. The device then transfers the contents of the addressed location to the peripheral via line DA. The peripheral then sends a second request PA together with data on line DE which is loaded in the addressed location. The data sent by the peripheral may be that received from the central unit for error check purposes. In the second mode the peripheral sends a request PA, and address DE, and a direction of transfer signal. For transfers to the peripheral the device sends an acknowledgement together with the contents of the addressed location. For transfers to the central unit the peripheral sends a subsequent request PA together with the data which is loaded into the addressed store location. Modifications are mentioned in which each transfer of data or addresses may require several transfer operations and in which the addresses sent by the peripheral are treated as an index to be added to a base to give the actual address. Furthermore following a central unit to peripheral transfer the store address may be maintained valid for a series of peripheral to central unit transfers which require no further address but which occur in response to corresponding request and direction signals from the peripheral.
Patent GB-711768-A (GB)
Title: Improvements in or relating to circuit arrangements for synchronising oscillators
IPC: H03L7/06
Filed: 1952-12-15
Abstract: 711,768. Automatic frequency and phase control systems. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Dec. 15, 1952 [Dec. 18, 1951], No. 31715/52. Class 38(4) When an oscillator 4, Fig. 1, synchronized with a controlling oscillation 1 by feeding both oscillations to a phase-comparer 2 whose output 3 controls the frequency of the oscillator 4, any variation of the controlling frequency 1 requires the presence of a control voltage 3 in order to connect the frequency error of the oscillator 4, and this requires a phase difference between-the controlling and the controlled oscillation. This residual phasing error is substantially removed by feeding the controlling oscillation 1 to a frequency discriminator 7 whose output 8 varying with the controlling frequency is fed as a frequency-control voltage to the oscillator 4 in parallel with the control voltage 3 from the phase-comparer 2. Fig. 2 shows a suitable frequency discriminator for use when, as in a television receiver, the controlling oscillation is in the form of a pulse train 9. The pulses, which may first require to be converted into pulses of constant shape, are applied through a con denser 10 and across a leak resistor 11 to the grid of a tube 12 having in its cathode lead a parallel combination of a resistor 13 and condenser 14 whose time constant is a few times the period of the pulses. The output voltage at the cathode varies with the pulse frequency, and may beused as the control voltage 8 of Fig. 1. In Fig. 4, the phase-comparer is a pentode tube 18 fed on one grid with the pulse output 19 of the controlled oscillator 4<SP>11</SP>, and on another grid with the controlling pulses 22 through a condenser 23 and across a resistor 24 and diode 25. Output is integrated by an anode network 26, 27 and fed by lead 28 to control the oscillator frequency The pulses 22 are also fed to a frequency discriminator 7" whose output is amplified in a D.C. amplifier 29 having its anode connected to the anode of the phase-comparing tube 18, When used to sychronize the line-scanning oscillator of a television receiver, the invention obviates lateral shift of the picture when the sync pulse frequency deviates from its normal value.
Patent GB-465752-A (GB)
Title: Cooling arrangement for increased output of oil-cooled transformers and similar apparatus
IPC: H01F27/12
Filed: 1935-11-18
Abstract: 465,752. Electric transformer and like tanks with radiator elements. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. Nov. 18, 1935, Nos. 31893 and 31894. Convention dates, Feb. 2 and Aug. 15. [Class 29] Guiding surfaces M, Fig. 2, are provided for a flow of cooling-air directed by a fan over gilled radiator tubes of a transformer oil tank K, the air flow being at right-angles to the longitudinal direction of the tubes. Baflles W1, W2 at the air inlet and outlet respectively separate the air stream into two parts. In place of a divided main air stream two separate streams for tubes at the sides only of the tank may be provided, as shown in Fig. 3. A forced circulation of the oil may be employed in addition, as shown in Fig. 4, the oil being withdrawn by a pump P from ducts T formed inside the tank and to which the gilled tubes are connected, and delivered again into the tank at N. The radiator tubes may be connected at both ends to ducts formed inside the tank, the ducts having baffles to provide a sinuous flow through the radiator tubes.
Patent GB-274346-A (GB)
Title: Improvements in or relating to grinding or abrading machines
IPC: B24B27/00
Filed: 1926-12-16
Abstract: 274,346. Jung, K. Sept. 25, 1926, [Convention date]. Flat extended surfaces, surfacing; protecting parts of machines.-In a grinding-machine having a tool carrier adjustable vertically on a standard, the gearing for moving the work and the tool, and the tool carrier guides are enclosed to prevent the entrance of dust. As applied to a surface grinding machine, the frame 1 is closed at the bottom by a plate 2, and within the frame is a housing 3 enclosing hydraulic driving gear including a pump driven by a shaft 5 from the main shaft 7 of the machine; a flange 4 on the housing 3 closes the frame at the front. On the frame is a carriage 9 transversely movable by a nut 10 and a screw 11, which screw is enclosed by telescopic tubes 15; the screw is rotated by ratchet gear 12 from the gearing in the housing 3, and the carriage 9 has thereon a slide 17 movable longitudinally by hydraulic gear 19, 20. The grinding-wheel 21 is mounted on a spindle 22 carried by a slide 26 closed at the rear by a plate 27, and the slide is movable vertically on a standard 31 by screw gearing 34, 35 operated by a shaft 40 carrying a hand wheel. The slide 26 has extensible bellows 32 enclosing it at the lower end, and is closed at the top by a cap 29. Within the slide is a belt 43 driven by a pulley 44 and passing round a pulley 46 on the spindle 22, round a pulley 45, and round a spring-pressed jockey pulley 47.
Patent GB-220219-A (GB)
Title: Improvements in screw operated valves
IPC: F16K1/42
Filed: 1923-12-20
Abstract: 220,219. Feather, S., Feather, G. R., Feather, H. H., and Feather, E. E., (trading as Rushton, G.). Dec. 20, 1923. Lift valves; seats.-A screw-down valve is provided with a removable nut for the screwed spindle, and with a removable seating. The valve is provided with a removable flanged seating g having openings h below the partition i, and a square portion n to prevent rotation. The seating is secured by a nut q. The nut s is independent of the casing and is prevented from rotating by an angular portion v.
Patent GB-777065-A (GB)
Title: Shell moulds and moulding cores
IPC: B22C1/22
Filed: 1954-11-04
Abstract: Shell moulds and cores particularly for nonferrous metals comprise a major proportion of fine grained quartz sand, a minor proportion of a hardenable, more particularly thermo-setting, phenolic resin and at least 0.5 per cent by weight of resin, of at least one oxygen-yielding substance.  Oxygen yielding substances include compounds such as Pb3O4, KNO3, KClO4 and benzoyl peroxide which split off oxygen on heating, and compounds such as Fe2O3 and Mn3O4 which react with the carbon of the carbonaceous resin.  The first group are generally known as oxidizing agents such as inorganic and organic peroxides, chlorates and nitrates. The second are generally substances reduced in the presence of carbon at temperatures above 500 DEG  C.  The additives may be admixed with the finished pulverous resins, or added to the initial substances employed for the production of the resins.  The moulds are more readily carbonized and removed from the casting.
Patent GB-320544-A (GB)
Title: Improvements in machines for the dyeing of textile fabrics
IPC: D06B5/00
Filed: 1928-11-05
Abstract: 320,544. Callebaut, C., and Blicquy, J. de. Nov. 5, 1928. Agitating materials and liquids together. - The circulation of textile fabrics in dye vats is produced by pressure jets of dye. liquor directed into the vat parallel to one side wall, draw-off holes being provided in this wall and the fabrics being prevented from blocking these holes by the action of the jets. As shown, dye liquor is pumped from a side chamber 5 through jets 3 and circulates the fabrics round the path A. Draw-off holes 6 are located adjacent, the jets 3 in the side wall 2 and further jets 7 tangential to the circulating path A can be provided.
Patent GB-466194-A (GB)
Title: Improvements in the manufacture and production of dyestuffs
IPC: C09B57/00
Filed: 1935-11-20
Abstract: Dyes are made by heating diamides or dinitriles of aromatic o-dicarboxylic acids, such as phthalic acid or a naphthalene o-dicarboxylic acid, or mixtures of the corresponding o-dichlor or o-chlorcyano compounds with copper cyanides, with compounds containing ketonic groups in the presence of Friedel - Crafts condensing agents.  Condensing agents specified are anhydrous aluminium halides, anhydrous iron chloride, zinc chloride and antimony pentachloride, copper halides and boron fluoride.  The condensing agent is preferably used in amounts greater than molecular.  The components may be fused together or heated with solid or liquid diluents, such as aromatic hydrocarbons or their nitro and halogen compounds, or high-boiling amines such as pyridine, quinoline or piperidine.  Solid diluents are alkali or alkaline earth metal halides and alkali metal sulphates or phosphates.  The products may be sulphonated, and the sulphonic acids so obtained may frequently be laked, or they may be used as pigment dyestuffs for wallpapers, coatings, &c., and if they contain vattable groups, as vat dyestuffs. In examples, phthalodinitrile is condensed with benzanthrone; other ketonic compounds specified are fluorenone, 1-chloranthraquinone, Bz.1-nitrobenzanthrone, benzoin, Bz.1-aminobenzanthrone, 6-aminobenzanthrone, Bz.1.6-dinitrobenzanthrone, Michler's ketone, benzophenone, acetophenone, anthraquinone, 1-aminoanthraquinone, benzil, 2-hydroxyanthraquinone, isatin, quinone, naphthoquinone, phenanthrenequinone, chloranil, 6-chlorbenzanthrone, 1.4-diaminoanthraquinone.  Specification 457,526 is referred to.
Patent GB-664691-A (GB)
Title: Improvements in synchronous electric motors
IPC: H02K21/12
Filed: 1948-12-13
Abstract: 664,691. Alternating-current motors. MIDGLEY, A. H. Dec. 9, 1949 [Dec. 13, 1948], No. 32182/48. Class 35. In a self-starting synchronous motor in which the stator polepieces are located at one end of a magnetic core, the stator comprises two sets of poles of opposite polarity, each pole of each set of poles comprising a main and a shaded pole. The Figure shows a stator cup - shaped casing a housing an exciting coil b through the centre of which a stator magnetic core e is accommodated. One set of poles consists of a magnetic starpiece k with upturned teeth l and a second similarly shaped star-piece m with teeth n but separated from the first star-piece by a copper shading ring o. On top of the second star-piece m, a flat star p of insulating material is placed, and these four members are then secured together by rivets passing through the holes shown. The other set of poles consists of magnetic rings q, r separated by a copper ring s which is embraced by the teeth t, u turned in opposite direction from the rings q, r. These three members are secured together and to the insulating member p by rivets through the holes shown. The whole assembly is accommodated within the stator-cup a and magnetically linked with the core e by securing the star-piece k to the end of the core e. The rotor comprises a ring y of permanent magnet material on one side of which an aluminium disc v and soft iron starpiece z are mounted.
Patent GB-1063018-A (GB)
Title: Furnace walls
IPC: F27D9/00
Filed: 1964-08-07
Abstract: 1,063,018. Furnace hearth walls. DIDIERWERKE A.G. Aug. 7, 1964 [Sept. 24, 1963], No. 32213/64. Heading F4B. A furnace hearth wall comprises an outer wall 1 including spaced vertical bearers 2 and a sealing lining 3 of channel section members, and an inner refractory brick wall 4 spaced from the outer wall and retained by horizontal bearers 6 disposed between, and engaging, spaced vertical uprights 5. The bearers (6) have rearwardlyextending projections 7, at their ends, engaging behind flanges (8) of the vertical uprights (5), Fig. 3 (not shown), the bearers being movable vertically. The refractory bricks 10 of the inner wall are each formed with an outer recess 11. In construction of the inner wall, a row of bricks 10 is laid with recesses uppermost, bearers 6 are introduced between adjacent uprights 5 and are lowered to engage the recesses, a second row of bricks is laid with recesses facing downwards and engaging the bearers; thus each bearer 6 anchors two rows of bricks Apertures are provided in the outer wall for the introduction of cooling air into the space between inner and outer walls; this may be achieved by chimney draught or by the use of compressed air injector nozzles, Fig. 5 (not shown).
Patent GB-1074226-A (GB)
Title: Improvements in method for recovering dimethylchlorosilane
IPC: C07F7/12
Filed: 1965-07-28
Abstract: Dimethylchlorosilane is recovered from a product of the reaction between powdered silicon and methyl chloride which comprises at least 10% by weight of dimethylchlorosilane, based on the weight of crude chlorosilanes in the product, by contacting the reaction product with anhydrous HCl to produce a mixture having at least 0.01 part of HCl per part of reaction product (parts by weight), distilling the mixture, and recovering the fraction boiling at 34-36 DEG  C. Preferably the HCl is added above 0 DEG  C. at a pressure up to 1100 p.s.i. and the mixture is distilled up to 41 DEG  C.  In another embodiment the HCl is added at atmospheric pressure, the whole mixture passed into a condensation zone at - 20 DEG  to + 30 DEG  C., and the chlorosilane mixture recovered and distilled as above.  The product is of 98% or higher purity.
Patent GB-1341246-A (GB)
Title: Liquid level sensing assembly
Inventor: HALLEN J-A
IPC: G01F23/00
Filed: 1971-07-09
Abstract: 1341246 Liquid level indication INGENJORSFIRMA GUNNAR ABRAHAMSSON AB 9 July 1971 [9 July 1970 24 Aug 1970] 32270/71 Heading G1H A liquid level sensing device 1 is mounted by a carrier 8 connected to an attachment 9 mounted on a wall 13 of a container, and the carrier 8 is adjustable with respect to the device 1 or the attachment 9 so that the device 1 may be arranged at a suitable level within containers of different sizes. The carrier 8 may be a rod of soft material and of "I" cross-section, provided with a scale 19, of straight or cranked, Fig.4 (not shown), configuration, deformed at 20, 21 to hold the device 1 in an adjusted position. Alternatively Fig. 3 (not shown), the rod may be adjusted relative to the attachment 9 and held in position by a spring. The device, Fig.4 (not shown), can be adjusted along the carrier by a cable.
Patent GB-618181-A (GB)
Title: Improvements in or relating to screens or stencils
IPC: G03F7/12
Filed: 1946-10-30
Abstract: An unsaturated linear polyester resin is made by condensing a dihydric alcohol such as ethylene glycol, di- or tri-ethylene glycol or propylene glycol with an unsaturated di-basic acid or anhydride such as maleic, citraconic or itaconic acids or anhydrides, or fumaric acid, or their adducts with diolefines such as cyclopentadiene in approximately molar proportions; or by reacting an unsaturated dihydroxy alcohol with a saturated dibasic acid or anhydride, such as phthalic anhydride; or by causing an unsaturated hydroxy acid to undergo a polycondensation reaction; the polyester resin so produced is mixed with a polymerizable CH2=C< compound such as styrene, vinyl esters or acrylic or methacrylic acids or esters, and then with a photo-sensitizer such as benzoin or benzophenone, and the photo-sensitized mixture is spread on a foraminous sheet material, such as silk fabric, exposed to light through a negative pattern, and treated with a solvent such as acetone, di-acetone alcohol or benzene to remove portions of the mixture which have not been hardened by the exposing light, to result in a screen or stencil suitable for use by the standard technique of silk screen printing.
Patent GB-949439-A (GB)
Title: Treatment of aqueous sludges
Inventor: TALON MARCEL GEORGES
IPC: C02F11/12
Filed: 1962-08-22
Abstract: 949,439. Cyclic treatment of sludge. EQUIPEMENTS TECHNIQUES INDUSTRIELS. Aug. 22, 1962, No. 32307/62. Heading B1D. Aqueous sludge introduced at 7 to a primary tank 2, Figs. 3 and 1, is screened at 1, and the resulting sludge with only large solids removed passes out at 10 to a "discriminator" 3 (see also Fig. 4), whence liquid with colloidal solids still in suspension is withdrawn at 11 and liquid with settled solids is withdrawn at 12. Material from line 11 passes directly by line 15 to a biological precipitation device 5, whilst material from line 12 passes to a separating device 4 (preferably a centrifuge), the solids from which are disposed of at 14, and the filtrate from which passes at line 13 to line 15. The mixture from device 5 passes along line 16 to a decantation tank 6 whence pure supernatant liquid is withdrawn at 17 and settled sludge is withdrawn at 18, the major portion of the latter being recycled at 20 to the upstream side of the biological precipitation device 5 and the minor portion being recycled at 19 to the primary tank 2, Fig. 1. Water may be added at 8 to the primary tank 2, Fig. 3, and supernatant from the final decantation tank 6 may be added at 17 via a further tank 32, Fig. 3. The "discriminator" 3, Fig. 1, is shown in detail (with a draining pipe 28 added) in Fig. 4, though the pipe immediately above the axial inlet 26 may be omitted.