baber/WOPTO huggingface dataset:
Patent GB-1429730-A (GB)
Title: Method of producing glass by flame hydrolysis
IPC: C03C23/00
Filed: 1974-10-14
Abstract: 1429730 Producing oxide-modified glass CORNING GLASS WORKS 14 Oct 1974 [19 Oct 1973] 44372/74 Heading C1M A glass body having incorporated therein at least one oxide additive is produced by forming a preform on a support by depositing at least one glass-forming oxide on said support by flame hydrolysis, the preform having a network of continuous open pores throughout its mass, placing at least part of the preform in a heated, closed environment containing at least one condensible oxide additive, or compound(s) convertible thereto, in the vapour phase so that the vapour enters the pores, cooling the preform to condense the vapour in the pores, and heating to consolidate the preform to a non- porous glassy body comprising the oxide(s) dispersed therethrough. The preform, which may have a porosity less than 90% (as measured by mercury porosimetry) and an average pore size of at least 0À001 Á, may be of SiO 2 , deposited on a fused quartz mandrel by flame hydrolysis of SiCl 4  and O 2 . The preform may be placed in a chamber with the additive (e.g. AlCl 3 ) in non- vapour form, the chamber sealed, evacuated and heated, and the preform then rapidly cooled to condense the vapour. The chamber may alternatively comprise air or N 2  as diluent gas. The consolidation may be by induction heating to, e.g. 1450 C., in helium.
Patent GB-937508-A (GB)
Title: Improvements in or relating to ball, needle or roller bearings for bottom rollers of drafting mechanisms in spinning machines
IPC: D01H5/74
Filed: 1960-12-28
Abstract: 937,508. Bearings. W. SCHAEFFLER, and G. SCHAEFFLER, [trading as INDUSTRIEWERK SCHAEFFLER oHG.]. Dec. 28, 1960 [Jan. 16, 1960], No. 44501/60. Class 12 (1). The bottom rollers 2, 5, 6, Fig. 1, for drafting mechanisms in spinning machines are carried in bearings 4, 7, 8 on a stand 1. Bearing 4, Figs. 3, 4, comprises a U-shaped lower member 9 forming a race for needles 13, and a detachable upper member 10 preferably of transparent synthetic plastic, the members being carried in a recess 3 of stand 1, and supporting roller 2 by the needles 13, carried by a split cage 12. The upper member is cut away at 16 to clear the needles, and a grease chamber is provided at 17. Member 10 is held in place by clips 24 which are carried by slots 22, 23, in members 9, 10, and elastic packing-rings 18 slit at 60 degrees to the bearing axis, seal the bearing and locate the latter axially. Bearings 7, 8 may have a U-shaped recess forming the needle race, or they may be provided with a member 9. In a modification, Fig. 10, packing-rings 18 are replaced by profiled portions 39 on member 38, and packing pieces 40, in member 9. In a further modification, the profiled portions engage the larger diameters of the rollers, and a seal is provided between member 9 and the larger diameter of the roller.
Patent GB-907369-A (GB)
Title: Improvement in tubular rivet connection
IPC: F16B17/00
Filed: 1960-12-29
Abstract: 907,369. Rivets. GRANLUND, H. Dec. 29, 1960 [Jan. 4, 1960], No. 44642/60. Class 89 (1). [Also in Group XXII] To give a concealed connection between a tube 2 and a wooden board 1 which eventually receives upholstery 8, a hard bushing 9, e.g. of steel, is mounted in the board 1 so that it receives the expansion end of a tubular rivet 3 passed through the tube wall. The bushing 9 has a reduced end 10 with an opening having a diameter corresponding to that of the rivet diameter. Corrugations, knurls or a flange 12, Fig. 2, may be formed on the bushing, which is mounted in the board before the upholstery 8 is applied.
Patent GB-1365120-A (GB)
Title: Shock absorbing device for draft gear
IPC: B61G11/08
Filed: 1971-09-27
Abstract: 1365120 Elastomeric springs CLEVITE CORP 27 Sept 1971 [9 Oct 1970] 44870/71 Heading F2S An elastomeric spring 10 comprises a pad 26 with at least two peripheral ridges 30 interposed between and bonded to two oversize metal plates 11, 12. The valley 34 defined between the ridges 30 is required to have in cross-section a shape the inverse of the shape of the ridges. Recesses 22 and 24 in the plates locate similar springs 10 to form a stack (Fig. 5, not shown).
Patent GB-1006726-A (GB)
Title: Improvements in or relating to piezo-electric transducers
IPC: H04R17/00
Filed: 1962-11-28
Abstract: 1,006,726. Piezoelectric instruments. S. G. BROWN Ltd., and V.H.A. DIEDERICHS Aug. 16, 1963 [Nov. 28, 1962], No. 45052/62. Heading H4J. A transducer for converting electrical signals into sound waves or vice versa comprises a rigid ring, a diaphragm secured around its periphery to the ring and an elongate piezoelectric element in the form of a strip secured to the centre of the diaphragm, the longitudinal axis of the strip extending radially or diametrally with one or both ends of the strip secured to the ring, the strip having electrodes on two opposite faces normal to the general direction of displacement of the diaphragm. The strip element may be rigidly secured to the ring to form a cantilever system. Two or more strips may extend from different points on the ring inwardly to the centre of the diaphragm. An earpiece assembly for a telephone headset comprises a metal diaphragm 10 (Figs. 2, 3) which has a conical centre portion 11 and is adhered between a rigid plastics ring 12 and a rigid plastics masking disc 13. A strip piezoelectric element 14 of lead zirconate-lead titanate is adhered at its centre to the centre of the diaphragm 10. The ends of element 14 fit into silicone mounting rings 15 in recesses 16, the rings 15 being adhered to ring 12 and to disc 13. Silver electrodes on element 14 are connected by wires 17, 18 to tags 19, 20 on a terminal disc 21. The masking disc 13 is provided with apertures 23 for transmitting air vibrations and is covered with rayon mesh 22. The construction may be used for loudspeakers, hearing aids, or microphones. In a " noise cancelling " microphone disc 21 is apertured or omitted (tags 19, 20 being carried on ring 12). In a modified construction a short strip 30 (Fig. 5) of lead zirconate-lead titanate is joined at one end to a polymethyl methacrylate extension 31 to form a combined element which extends between moumting ring 12.
Patent GB-1066940-A (GB)
Title: Improvements in or relating to telegraphy systems and apparatus therefor
IPC: H04L1/00
Filed: 1965-10-25
Abstract: 1,066,940. Telegraphy. SIEMENS A.G. Oct. 25, 1965 [Oct. 23, 1964], No. 45052/65. Heading H4P.  In a simultaneous two-way telegraph system in which errors are corrected by repetition the twotransmission directions have different frequencies and in the event of more than a certain number of repetitions occurring in a given time the frequency of the associated transmission channel is changed. Data is transmitted in one direction on, say, f 1  and in the other direction on f 2 . When an error is detected' on channel f 1  a repetition is requested. The repetition is repeated until it is correctly received or the certain number of repetitions, is attained. In the latter case the receiver frequency is changed to f 3  and a command sent, over channel f 2 , to change the frequency of the transmitter from f 1  to f 3 . The transmitter then sends its identity on f 3 , repeatedly until any incorrect phasing of the system has been corrected. When correct, normal traffic is resumed on f 2 , this resulting in normal traffic on f 3 . - Should both receivers change frequency simultaneously, the resultant incorrect phasing causes the transmitters to change frequency. as well. They then transmit their identity and normal traffic resumes when the phasing is correct.
Patent GB-1115530-A (GB)
Title: Digital data transmission systems
Inventor: BOTTAZZI RENZO
IPC: G08C25/02
Filed: 1965-10-26
Abstract: 1,115,530. Electric selective signalling. INTERNATIONAL BUSINESS MACHINES CORPORATION. 25 Oct., 1965 [19 Nov., 1964], No. 45057/65. Heading G4H. In a system comprising a number of data transmitters, e.g. weighing machines, and a lesser number of receivers, e.g. card punches, when a transmitter has data to transmit all free receivers attempt to establish communication with the transmitter. When one of the receivers establishes communication the other receivers are prevented from establishing communication. Upon an operator pressing a button at a transmitter an A.C. call signal is passed over separate lines to each card punch. Each free punch returns a signal which sets an associated selector switch to search for the earthed contact which indicates the calling transmitter. When one of the selectors reaches this contact the other selectors and their card punches are set to quiescent. Data now passes from the transmitter to the punch. The received data is checked and a correct/incorrect signal returned at the end of transmission. The " correct " signal is a short circuit lasting several seconds, and closes a thermal relay after a preset time to indicate the correct reception at the transmitter. The various circuits are then set to quiescent. The " incorrect " signal consists of several brief short circuits, causing an " error " lamp to glow at the transmitter and the circuits to be set to quiescent. Relay circuitry is described. The identity of any transmitter wishing to transmit when there is no punch available is stored for future use.
Patent GB-1328894-A (GB)
Title: Marine fender structure
IPC: E02B3/26
Filed: 1971-09-28
Abstract: 1328894 Fenders BYRON JACKSON Inc 28 Sept 1971 [20 Oct 1970] 45126/71 Heading B7S A deflectable fender unit comprises an elongated body 20 of elastomeric material having generally uniform width and thickness with support plates, 24, 24<SP>1</SP> affixed to each end thereof each support plate having a deflection guide plate 26, 26<SP>1</SP> bonded to the body 20 to determine the direction of buckling. Each guide plate 26, 26<SP>1</SP> is supported away from the respective support plate 24, 24<SP>1</SP> by web members 28 and secured by welding to define a cavity 31. The deflection plates 26, 26<SP>1</SP> have openings 30 so that a locking action is provided when the deflection body 22 is bonded to the support plates 24, 24<SP>1</SP>. The support plates 24, 24<SP>1</SP> have holes 21 for attachment to a pier 10 and a pivoting vertical beam 14, Fig. 1, of the fender structure which incorporates horizontal beams 16 to which are connected rubbing members such as wood timbers 18.
Patent GB-965936-A (GB)
Title: New pregnadienes
IPC: C07J75/00
Filed: 1961-12-19
Abstract: The invention comprises D 1,4-3,20-dioxo-6a -fluoro-16a -methyl-11b , 14a , 17a , 21-tetrahydroxy pregnadiene and 21-esters thereof. They may be prepared by dehydrogenation of the corresponding D 4-pregnenes with, for example, enzymes such as those of the mould Corynebacterium simplex, or chemically with, for example, selenium dioxide. Esters and the free 21-ol may be interconverted by standard esterification and hydrolysis procedures. Examples are given and an extensive list of esterifying organic and inorganic acids is provided.  The steroids of the invention, which are stated to have anti-inflammatory properties, may be formulated as pharmaceutical compositions with suitable carriers. These may take the form of solutions, suspensions, emulsions, depot preparations, tablets, dragees, salves or creams and may contain preserving, stabilizing, wetting or emulsifying agents, salts for varying the osmotic pressure or buffers.  Specification 965,935 is referred to.
Patent GB-1328672-A (GB)
Title: Separating device for use in electrophotographic apparatus
IPC: G03G21/00
Filed: 1970-09-24
Abstract: 1328672 Delivering sheets EASTMAN KODAK CO 24 Sept 1970 [26 Sept 1969] 45558/70 Heading B8R A separating device for an electrophotographic apparatus having a photosensitive element 10, e.g. of arcuate shape, advanced along a predetermined path, comprises positioning means, e.g. rollers 100, 101 driven by a cam 91 rotatable with a shaft 21 about which the element is rotated, for bringing the surface of a copy sheet 55 into contact with the surface of the element 10 with its leading end 55a extending forwardly of the elment and means, e.g. a finger 77 operable by a cam 62 rotatable with the element, to intercept the leading end of the sheet for deflecting the sheet from the path of the element, e.g. to an endless belt of a firing station 45. The deflected sheet may be urged against a delivery roller (130), Fig. 4 (not shown), by electrostatic attraction, by an air blast from a nozzle (136) Fig. 6 (not shown), or by a mohair brush (135), Fig. 5 (not shown), or may be delivered by a suction roller (120), Fig. 3 (not shown).
Patent GB-1497066-A (GB)
Title: Optical fibre waveguides and their manufacture
IPC: G02B6/028
Filed: 1975-10-17
Abstract: 1497066 Optical fibre waveguides GENERAL ELECTRIC CO Ltd 17 Oct 1975 [22 Oct 1974] 45628/74 Heading C1M An optical fibre waveguide is composed of vitreous silica, with a refractive-index modifying dopant therefor incorporated in at least part of the fibre cross-section, the silica being substantially free of hydroxyl groups and containing, incorporated in the SiO 2  lattice in at least a core region of the fibre, a quantity of oxygen atoms in excess of the stoichiometric proportion of oxygen atoms in SiO 2 . The excess amount of oxygen may be 50-500 p.p.m. (by weight) of the SiO 2 , the SiO 2  preferably being saturated with oxygen. The dopant, if present, may be, e.g. N 2  or TiO 2 . In a first method of making such a waveguide, vitreous silica is formed by a vapour phase deposition reaction between silane (SiH 4 ) and oxygen (with or without a dopant) at, e.g. 2500‹ C., the vitreous silica formed is heated (e.g. at 1700‹ C. in vacuo) to remove hydrogen from the hydroxyl groups, and the oxygen-rich silica formed further processed under water-free conditions to produce the waveguide. In a second method, vitreous silica is produced by reaction in the vapour phase of SiCl 4  and O 2  using non-water-producing heating means (e.g. an Ar/O 2  r.f. plasma at above 2500‹ C.), water is introduced, up to 300 p.p.m. by weight, into the hydroxyl-free silica obtained, and the silica further processed by drawing under water-free conditions to remove the hydrogen of the hydroxyl groups. In a third method, SiCl 4  vapour is heated at above 2500‹ C. in an oxygen r.f. plasma, the oxygen-rich silica again being further processed under waterfree conditions.
Patent GB-1081939-A (GB)
Title: Machine tool for copying contours
Inventor: WEAVER PAUL JOSEPH
IPC: B23Q35/18
Filed: 1964-11-09
Abstract: 1,081,939. Copy-milling. TRUE TRACE CORPORATION. Nov. 9, 1964, No. 45661/64. Heading B3K. A pantograph-type copying machine comprises a valve 44 to control the copying movements. A follower shaft 11, which carries the valve, is vertically movable in a sleeve 13 and is pivotally connected to an arm 10 sliding in sleeves 16, 18. The sleeves are respectively pivoted to a fixed pivot 15 and a cutter shaft 20. The pivot 15 and shafts 11, 20 are connected by an adjustable pantograph linkage (21, 22, 23). The cutter 27 is rotated by a motor 26a. The workpiece 33 and pattern 34 may each be vertically adjustable. The tracer valve 44 is mounted on a slide 43 movable by a fluid motor 62 and a screw 63 horizontally on a slide (40), movable vertically by a fluid motor (58) on a slide (37) movable horizontally on the pattern support 32 by a fluid motor 53 and a screw (36). The tracer 68 is movable vertically and pivotally from side-to-side and controls two fluid circuits, the rates of flow through which are inversely related. The circuits may control any two of the motors 53, 58, 62. An incremental feed may thus be applied to the slide (37) while the work is machined in vertical planes. In a modification, all three motors are controlled by the tracer.
Patent GB-1401924-A (GB)
Title: Stabiluzation of synthetic polymers
IPC: C08L1/00
Filed: 1973-10-01
Abstract: 1401924 Stabilizing polymers SANKYO CO Ltd 1 Oct 1973 [4 Oct 1972] 45789/73 Headings C3P and C3R [Also in Division C2] Synthetic polymers are stabilized with aminopiperidine derivatives of formula where in R<SP>1</SP> and R<SP>2</SP> are alkyl or together with the carbon atom form a tetramethylpiperidyl group; R<SP>3</SP> is alkyl, substituted alkyl, alkenyl, alkynyl, aralkyl or substituted aralkyl; n is 1, 2 or 3; when n is 1 R<SP>4</SP> is H, R<SP>3</SP>, cycloalkyl, aryl, substituted aryl, monoacyl, alkoxycarbonyl, aralkoxycarbonyl, carbamoyl, N-substituted carbamoyl, thiocarbamoyl, N-substituted thiocarbamoyl, a monovalent group derived from a non-carboxylic oxo acid, or R<SP>4</SP> and R<SP>5</SP> together with the nitrogen atom form a phthalimido group; when n is 2 R<SP>4</SP> is alkylene, alkenylene, aralkylene, arylene, diacyl, carbonyl, N-substituted dicarbamoyl, N-substituted bis-thiocarbamoyl, a divalent group derived from a non-carboxylic oxo acid, or R<SP>4</SP> and R<SP>5</SP> together with the nitrogen atom form a pyromellitodiimide group; when n is 3 R<SP>4</SP> is alkanetriyl, aralkanetriyl, triacyl, a trivalent group derived from a non-carboxylic oxo acid, (-(CH 2 ) m O) 3 P or (-(CH 2 ) m O) 3 PO where m is 1 to 4: and R<SP>5</SP> is H, R<SP>3</SP>, cycloalkyl, aryl, substituted aryl, alkoxycarbonylalkenyl or a 5- or 6-membered heterocyclic group containing one or more N, O and/or S atoms, or when R<SP>4</SP> is alkylene, alkenylene, aralkylene, arylene, alkanetriyl or aralkanetriyl R may also be monoacyl, alkoxycarbonyl, aralkoxycarbonyl, carbamoyl, N-substituted carbamoyl, thiocarbamoyl, N-substituted thiocarbamoyl or a monovalent group derived from a non-carboxylic oxo acid. The polymers may be polymers and copolymers of olefins, conjugated diolefins, styrene, vinyl chloride and vinylidene chloride, polyacetals such as polyoxymethylene and polyoxyethylene, polyesters such as polyethylene terephthalate, polyamides such as nylon-6, nylon-6,6 and nylon-6,10 and polyurethanes. Conventional antioxidants, light stabilizers, metal deactivators, peroxide deactivators and nucleating agents may also be present. Many stabilizers are listed and examples describe the stabilizing of (1 and 9) polypropylene, (2 and 9) polyethylene, (3) polystyrene, (4) ABS resin, (5) nylon-6, (6) polycaprolactone polyurethane, (7) polyvinyl chloride with dibutyltin maleate and butyl stearate and (8) unsaturated polyester resin.
Patent GB-1155103-A (GB)
Title: Process for the Production Of 4-hydroxy-2-sulpholene
IPC: C07D333/48
Filed: 1966-10-14
Abstract: 1,155,103. 4 - Hydroxy - 2 - sulpholene. CHEMISCHE WERKE H LS A.G. 14 Oct., 1966 [16 Oct., 1965], No. 45920/66. Addition to 1,111,833. Heading C2C. 4-Hydroxy-2-sulpholene is produced by heating 3,4-epoxy-sulpholane to at least 90  C. in the presence of a catalytic amount of anhydrous magnesium chloride and/or flouride or an anhydrous halide of anothermetal of main group II or an anhydrous halide of main Group I, or a halide of main Groups I and II which contains less than the maximum amount of water of crystallization. The catalyst may be used in the form of an etherate.
Patent GB-1490342-A (GB)
Title: Supervision circuit for controllable pitch propellers
IPC: B64C11/30
Filed: 1974-10-03
Abstract: 1490342 Monitoring propeller pitch PORTER CHADBURN (DEVELOPMENT) Ltd 3 Oct 1974 [2 Oct 1973] 45965/73 Addition to 1309690 Heading G1N It is sometimes necessary to have a difference between demanded pitch and actual pitch in a controllable pitch propellor, and to achieve this a supervision circuit is provided which comprises the features of Fig. 3 wherein a generator (e.g. a potentiometer) coupled to the oil box of a controllable pitch propeller signals the actual pitch control applied whilst similar potentiometers controlled by each of two coupled together pitch control handles, Fig. 3, signal through a shaper 3 the demanded pitch control required by an operator. The generators coupled to the handles are connected to a comparator 1 which signals an alarm at a module 2 if the handles become misaligned, and one of the handle generators and the oil box generator are connected to a comparator 4 which signals the ahead or astern error in the difference between the demand from 3 and the actual pitch from the oil box generator. The signal from the oil box is also fed to a differentiator 5 which produces a signal as an ahead or an astern output as appropriate dependent on the direction of change of the actual pitch from the oil box, whenever the rate of change of the actual pitch exceeds a predetermined value. The signal from the oil box is also fed to a reference device 6 which produces an ahead or astern signal when they are greater than predetermined low values. The signals from 4, 5 and 6 are fed to a logic circuit 7 which produces an alarm when there is an error signal from comparator 4 the reference device 6 is not producing a reference signal of the same sense as the error signal and the differentiator 5 is not producing a rate signal of the same sense as the error signal. In a modification the circuit has an attenuator 8 whereby the reference signal applied to the logic circuit 7 from 6 is not a constant signal such as AB and CD on Fig. 1 but is a signal which changes with the handle position (AB and AC), Fig. 2 (not shown). In Fig. 1 the full line indicates the relationship between demanded pitch and control handle position for both ahead and astern pitches, such demanded pitch being the actual pitch where no trim or overload pitch modifications are applied and where the pitch is not affected by a fault condition. The chain lines enclose an area representative of the permissable range for the actual pitch allowing for the application of trims and overload modifications and alarm is only given when the pitch is outside this area.
Patent GB-1535205-A (GB)
Title: Variable displacement pump
IPC: F04B49/08
Filed: 1976-10-29
Abstract: 1535205 Controlling variable displacement pumps PLESSEY CO Ltd 29 Oct 1976 [6 Nov 1975] 46013/75 Heading G3P A variable-displacement pump 2 comprises a swash-plate 4, an actuator 14 for moving it to a  maximum displacement position, and a piston and cylinder actuator 28 for moving it to a minimum displacement position, the supply of fluid to the actuator 28 being controlled by means 48, 80 responsive respectively to the pump output pressure and flow-rate. The actuator 14 may be a further piston and cylinder subjected to pump output pressure and assisted by a spring 20, or it may be solely a spring. When the output pressure and flow are below predetermined levels, spool valves 50, 82 are in the positions shown, in which the actuator 28 is connected to tank via conduits 154, 156, 158. When the output pressure in conduit 152 overcomes spring 74 valve 50 moves so that conduit 156 is blocked and fluid from conduit 152 if fed via conduit 154 to the actuator 28 to reduce pump displacement. Likewise when the flow produces a pressure drop across orifice 162 which overcomes spring 88, valve 82 moves so that fluid is supplied to the actuator 28 via conduits 152, 153, 156, 154.