baber/WOPTO huggingface dataset:
Patent GB-398060-A (GB)
Title: Improvements in or relating to processes and apparatus for the manufacture of ribbons composed of threads secured together by adhesives
IPC: D04H3/115
Filed: 1932-11-28
Abstract: 398,060. Fabrics composed of threads united by adhesives. CLERC, R., 30, Rue Allard, WAGON, J., 41, Boulevard Carnot, both in St. Maude, Seine, and NEGRIE, G., 106, Avenue de St. Maude, Paris, both in France. Nov. 28, 1932, No. 33664. [Class 140.] In the making of ribbons consisting of threads held together by an adhesive, the selvedge threads and some or all of the other threads are surrounded by at least one auxiliary thread in the form of a flat helix. In the case where the auxiliary thread surrounds the selvedge threads and some only of the other threads, the threads not surrounded by the auxiliary thread are applied over the latter. The apparatus comprises a tubular member c carrying a rotating boss h having arms on which are mounted bobbins i supplying the auxiliary helically wound threads j. The threads e forming the ribbon are drawn from a creel, and pass under a guide l, through a tension device o, over a grooved roller m and thence in the form of a flat ribbon through the hollow centre of the member c. Emerging from the latter, the threads pass over a grooved roller f and a tongue member which supports them while the auxiliary thread is wound on. The thread assembly then passes between rollers q, q<1> and under a roller s which dips into a bath r containing adhesive. The ribbon passes round the rollers s, s<1> and between the roller s<1> and an upper roller s<2>, and thence to drying mechanism. Change speed gearing is provided so that the relation between the speed of the warp threads through the apparatus and the rotation of the member h can be adjusted.
Patent GB-629934-A (GB)
Title: Improvements in fastenings for braces and belts for personal wear
IPC: A41F3/02
Filed: 1947-12-20
Abstract: 629,934. Strap fastenings. WALKER, Ltd., T., WALKER, T., and WOOD, H. H. Dec. 20, 1947, No. 33704. [Class 44] A fastening for braces or belts comprises two separable parts, one part 1 having a pair of spaced apart pockets 4 and a flange 3 and the other part 1 comprising a cross-bar 8 connected to a frame 5 by a neck part 9 which is adapted to pass between the pockets so that the ends of the cross-bar engage the latter, members 7 of the frame being adapted to engage between the pockets 4 and the flange 3. The flange and parts of the pockets are resilient so that the two parts fasten together with a snap action. The walls 4a of the pockets are also made resilient so that they yield slightly when the neck is forced between them (see Fig. 7) and provide a snapaction.
Patent GB-1278693-A (GB)
Title: Digital pulse transmission system
IPC: H04L27/04
Filed: 1969-07-04
Abstract: 1278693 Digital transmission systems PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 4 July 1969 [9 July 1968] 33770/69 Heading H4P In order to transmit digital data within a certain frequency band the data modulates a rectangular carrier wave having a frequency nb/2, where b is the bit frequency and n is small, and the modulated signal is applied to a circuit, comprising a digital filter, which adjusts the sprectrum of the signal in the frequency band to avoid the effects of unwanted modulation products. In various embodiments, Figs. 6-13 (not shown), the data is read from a source under the control of bit-rate clock pulses and passes to a gating circuit fed also by a carrier wave of frequency 3b/2. The output of the gating circuit feeds the register of the digital filter, the register being stepped by shift pulses derived from a source common to the source clock pulses and to the carrier. In one embodiment, Fig. 6 (not shown), the gating circuit is fed by antiphase carriers and delivers a phase shift keyed square wave. In Fig. 7 (not shown), the circuit consists of a modulo-2 adder. In this embodiment the output of the digital filter is combined with carrier frequency pulses, the transmitted signal then being an on-off keyed signal. In Fig. 9 (not shown) the circuit consists only of an AND gate. This gate feeds the filter and its output is also combined with the filter output to provide an on-off keyed signal. In Fig. 12 (not shown), the circuit is fed with an additional carrier of frequency b/2 and provides two on-off keyed different frequency signals to respective digital filters whose outputs, when combined, give a frequency shift signal. In Fig. 13 (not shown) a frequency shift signal is obtained using only one digital filter. An arrangement developing a 4-phase differential phase shift signal, Fig. 15 (not shown), comprises a diode matrix fed direct and via a 1-bit delay with the digital data from the source. The matrix has two outputs feeding bi-stables via AND gates. The bi-stables are connected to modulo-2 adders fed by 90 degree carriers and also to the input of the matrix. The adders feed respective digital filters whose outputs are combined to give the required phase shift signal. Each phase represents a pair of bits.
Patent GB-313633-A (GB)
Title: Improvements in or relating to cigarette making machinery
IPC: A24C5/39
Filed: 1927-12-14
Abstract: 313,633. Molins, W. E. Dec. 14, 1927. Cigarette-making machines.-Tobacco placed in the hopper 1 is fed by the roller 2, combed by the carded roller 3, and passes beneath the brushing roller 4. It is then picked off by the roller 5 and falls on the distributing roller 6. Its uniformity is improved by passage beneath a carded levelling roller 13 rotating in an opposite direction to the roller 6, and one or more pressure rollers 12, 14. The distributing and leveling rollers may be duplicated; and the distributor may take the form of a continuous band. The speeds of the later rollers in the series should be adjusted so as to maintain a reserve of tobacco above the roller 6. Specification 249,575 is referred to.
Patent GB-390887-A (GB)
Title: An improved locking device for the indicating mechanism of weighing scales
IPC: G01G23/40
Filed: 1931-12-07
Abstract: 390,887. Weighing-apparatus. AVERY, Ltd., W. & T. and TIMSON, W., Soho Foundry, Birmingham. Dec. 7, 1931,. No. 33821. [Class 143.] Pendulum - - weight apparatus.-In a weighing-scale having indicating - mechanism of the kind set forth in Specification 200,139, [Class 143, Weighing- apparatus], a locking-mechanism is incorporated as a unit with the indicating-mechanism so as to be capable of ready installation in and removal from the weighing-scale with the indicating-mechanism. As shown, the pendulous resistant 11 and suspended indicator spindle 14 are supported by a knife-edge bearing 7b mounted in a bracket 7 attached to the casing 5 by screws 6. A pair of locking-plates 12 are supported one on each side of the pendulous resistant by a screw 3 freely rotatable in a cross-bar 4 also attached to the casing by the screws 6. The head of the screw 3 is situated within a recess in the casing and axial movement of the screw is prevented by a pin 8 and washer 9. Upon rotation of the screw, the plates are raised and by means of projec-, tions 12b lift the pendulous resistant off its bearing. When fully raised, a V-shaped groove in the central boss of the pendulous resistant abuts a knife-edge on the bracket 7. At the same time, the indicator spindle 14 is locked between adjustable blocks 15 and the lower edges 12c of cut-away parts of the plates 12. The locking-plates are guided by tongues 13a pressed out of fixed plates 13.
Patent GB-605107-A (GB)
Title: Improvements in and relating to the production of substituted tetrahydropyrans
IPC: C07D309/10
Filed: 1945-12-14
Abstract: Halogen-2-acyloxy-tetrahydropyrans are prepared by reacting at an elevated temperature, e.g. up to the boiling point of the reaction mixture, a di- or poly-halogenated tetrahydropyran, which has at least one halogen atom attached to each of at least two carbon atoms, one of which is an alpha carbon atom, with an organic carboxylic acid or a salt thereof, e.g. in an inert liquid such as benzene, tetrahydronaphthalene or tetrahydropyran and under substantially anhydrous conditions.  The halogenated tetrahydropyran may contain carboxyl or carboxyl ester groups in the three position. Polyhalogenated tetrahydropyrans in which all the halogen atoms are the same may be employed, e.g. a dichlortetrahydropyran may be used at a temperature up to 70 DEG  C. or a trichlortetrahydropyran at a temperature up to 150 DEG  C.  The organic acid may be a mono-carboxylic acid or succinic, phthalic, glycollic, benzoic, salicylic, naphthenic or one of the chlor-acetic acids or an aliphatic acid containing up to five carbon atoms, and the alkali metal, alkaline earth metal, magnesium or ammonium salt of the organic acid may be used, e.g. a salt which leads to the formation of an insoluble halide.  It is preferable to remove or neutralize the halogen acid formed during the course of the reaction.  In examples: (1) 2-acetoxy-3 : 31-dichlortetrahydropyran is prepared by refluxing 2 : 3 : 3-trichlortetrahydropyran, sodium acetate and glacial acetic acid; (2) 2-acetoxy-3-bromtetrahydropyran is prepared by refluxing 2 : 3-dibromtetrahydropyran, anhydrous sodium acetate and glacial acetic acid.  The preparation of di-(3-chlortetrahydropyryl-2)-succinate from succinic acid and 2 : 3-dichlortetrahydropyran is also referred to.
Patent GB-751218-A (GB)
Title: Improvements in or relating to oil burners
IPC: F23D11/04
Filed: 1954-11-24
Abstract: 751,218. Oil-fuel burners. SCHMID, O. ZULLIG-. Nov. 24, 1954 [May 7, 1954], No. 34101/54. Classes 75(1) and 75(3). An oil burner has a cup-shaped atomiser 6 driven by a blast motor and arranged in a combustion chamber arranged coaxially with respect to the blast motor and blast, a glow plug 25 and a wick 23 to absorb oil in the combustion chamber. The air blast created by a fan 5 mounted on the same motor shaft 4 as the atomiser 6 passes partly through apertures 15 in a wall 9 and apertures 16 in a flange 11 formed on an inner combustion chamber wall 12 and through an annular space 17 between the inner combustion chamber wall 12 and an outer combustion chamber wall 14. The rest of the air blast flows into the atomiser 6 located in an opening 10 in the wall 9 and thence into the combustion chamber. Oil fed to the atomiser 6 through a pipe 19 passes through bores 8 of the rotating atomiser 6 into the air stream, passing through the opening 10, and is projected into a grating sleeve 26. A small part of the oil passes through holes 27 and a slot 28 in the sleeve 26 and settles partly on the glow plug 25 and partly on the wick 23 where it is ignited. The air feed can be varied by providing a slide valve or flap at the air inlet to the blast casing. The fuel supplied can be varied by a variable speed or stroke fuel pump or a reducing valve in the feed pipe. The air blast can be provided by the air blast ventilator of the electric motor, the blast air then being preheated by cooling the motor.
Patent GB-913432-A (GB)
Title: Device for applying adhesive tape
Inventor: LARKIN CYRIL STANLEY
IPC: B65C3/16
Filed: 1960-10-05
Abstract: 913,432. Applying adhesive tape. ADHESIVE TAPES Ltd. Sept. 1, 1961 [Oct. 5, 1960], No. 34169/60. Class 73. Cylindrical articles 15 are fed along a run-way defined by a driven belt 18 and a resilient wall member 17 to cause rotation of the articles, pressure - sensitive adhesive tape 20 being fed from a reel 21 to a driven roller 19 located at the entrance to the runway and serving for initial application of the tape and bringing the articles 15 into engagement with the driven belt 18, a knife 25 being provided for severing the tape between the roller 19 and the belt 18. The tape 20 is fed past a photo-electric scanner 22 for controlling a solenoid 24 for operation of the knife 25. Alternatively the knife may be operated after a certain degree of rotation of the driven roller. In a modification for applying tape to capacitors, these are fed down a shoot 2, Fig. 1 (not shown), and are rotated in the run-way with their axes horizontal.
Patent GB-873626-A (GB)
Title: Improvements in apparatus for monitoring the use of radio receivers
IPC: H04H1/00
Filed: 1957-11-04
Abstract: 873,626. Automatic audience rating systems. NIELSEN CO. Ltd., A. C. Nov. 4, 1957 [Nov. 26, 1956], No. 34361/57. Class 40(5) In an automatic audience rating system the audio programmes being received by receivers 1 are successively sampled over lines 2 or 4 by a selector switch 3, and during each sampling the sampled programme is compared successively with the available programmes received by receivers 12, under the control of a switch 16. The comparison is made between similar narrow bands of each programme selected by filters 5, 18, compressed in a constant output amplifier 8, 19 and rectified in full-wave demodulators 9, 20. The comparing circuit gives an output of random pulses when the samples are different and no output when they are the same, the output being fed to an indicator 15 which may comprise a group of recording milliammeters equal to the number of receivers and selectively switched in by a further selector bank. The constant output amplifier which comprises a heptode having the input injected on two grids and back biased by the output through an amplifier and full-wave rectifier is described with reference to Fig. 2 (not shown), and the comparator comprising a pair of full-wave rectifiers feeding a common circuit in opposition is described with reference to Fig. 3 (not shown).
Patent GB-1476803-A (GB)
Title: Paper forming pulp
IPC: C08L25/12
Filed: 1974-08-05
Abstract: 1476803 Paper made from synthetic polymeric fibres TORAY INDUSTRIES Inc 5 Aug 1974 34365/74 Addition to 1468920 Heading D2B [Also in Division C3] A paper forming pulp is produced by cutting wet spun fibres of a polymer composition consisting of (A) from 5 to 40% by weight of a graft copolymer which comprises (a) from 20 to 80% by weight of polyvinyl alcohol and (b) from 80 to 20% by weight of acrylonitrile and (B) from 60 to 95% by weight of a copolymer which comprises (c) from 55 to 95% by weight of styrene and (d) from 5 to 45% by weight of acrylonitrile and beating the cut fibres to form self-bondable microfibrous structures having a minimum thickness of from 0.01 to 5 microns. Examples are given of the production of paper from the pulp, mixed in some cases with wood pulp.
Patent GB-1470592-A (GB)
Title: Process for the continuous determination of the water content  of webs
IPC: G01N22/04
Filed: 1974-08-05
Abstract: 1470592 Electro-physical measurementmoisture BAYER AG 5 Aug 1974 [8 Aug 1973] 34386/74 Heading G1N Moisture content of a web is measured by its micro-wave absorption, when it is passed parallel to the electric field, through a resonant cavity, energized by a F.M. micro-wave generator and the change in the Q-factor of the cavity is measured. The reflected or transmitted signal from the cavity when empty and when loaded by the web are compared and standardized with a reference derived from the micro-wave generator. CIRCUIT. FIG. 4. Saw-tooth generator 7 modulates oscillator 6, e.g. a varactor modulated Gunn diode, feeding through a directional coupler 9, and variable damper 5 to the resonator 1. A reference signal from the coupler 9 is fed to peak-rectifier 8 whose output is used at 11 to standardize that from the "measuring" peak rectifier 10 whose output is proportional to the Q of the cavity. A similar arrangement using reflectance is illustrated in Fig. 5 (not shown). CONSTRUCTION. The wave-guide type resonator may be provided with iris apertures to vary the sensitivity Fig. 2 (not shown). The resonator walls may taper towards the gap to provide a more constant field in the region of the gap Fig. 3 (not shown).
Patent GB-773184-A (GB)
Title: Slack sensing means for endless conveyors
IPC: B65G23/44
Filed: 1955-12-02
Abstract: 773,184. Endless-belt conveyers. WEBB CO., J. B. Dec. 2, 1955 [Dec. 6, 1954], No. 34510/55. Class 78 (1). A device for taking-up slack in a conveyer is provided with means for indicating undue movement of the take-up in the direction opposite to that in which it takes up slack. The curved end member 25, Fig. 1, around which the belt passes is mounted slidably in a fixed framework and is spring-urged in the direction of the arrow 30. A base member 34 secured to the framework has a member 38 slidably mounted on it. The parts 38, 34 are connected by a pair of bolts 40, Fig. 3, which pass through apertures in the first part and a slot 37 in the second part. The parts are held frictionally in any position by springs 43 surrounding the bolts and bearing against nuts 42 on the bolts and washers 44 on the underside of the part 34. One end of the member 38 is formed as an upturned flange 46 which extends into the path of the crossmember 24 of the take-up, so that the take-up takes the part 38 with it when it moves in the direction of the arrow 30. A limit switch 48 and its actuating member 50 are mounted on the part 38. When the take-up moves in the reverse direction, a screw 52 mounted in the member 24 comes into engagement with the member 50 and the switch is closed to actuate a signal. A stop 56 secured to the part 38 lies in the path of the member 24 and (1) prevents excessive pressure between the parts 50, 52, and (2) acts positively to return the part 38 to a new setting with closing movement of the takeup when excess slack has been removed.
Patent GB-856984-A (GB)
Title: Improvements in separating tables
IPC: B03B5/06
Filed: 1958-10-28
Abstract: 856,984. Washing granular materials. DENVER MACHINERY CO. (PROPRIETARY) Ltd. Oct. 28, 1958 [Oct. 29, 1957], No. 34518/58. Class 82(2) A separating table for slurries comprises two or more surfaces 12 with longitudinal ribs 13, a transverse gap 14 between the ends of the surfaces, and adjustable blades 17 overhanging the gap and contacting the ribs 13 at points 20 which are mounted at or near the trailing edge of each surface 12 to form a series of adjustable openings to the flow of slurry. In the preferred form (Fig. 2) the surfaces are cascaded and the blades are adjustable by tilting and in planes normal to and parallel with the surfaces. To prevent turbulence in the flow the underside 21 of the blades, the leading edge 16 of the surfaces and the ends of the ribs are curved and the ends of the ribs are inclined at approximately 135 degrees to the surface of the table. Adjustment of the blades to regulate the openings is effected by screws 19 and the blades are pivoted at 18. The table which is level across its width and slopes along its length in the direction of slurry flow may also be vibrated. The separated heavy fraction passes through the openings into the gutters 15 for withdrawal and the lighter fraction passes over the blade to the following surface. Flotation or wetting agents may be added to the slurry to assist in the separation. In a modified form (Fig. 4, not shown) the ends of the ribs overhang the gaps and the blade contacts the underside of the ribs.
Patent GB-820919-A (GB)
Title: Hot box detector
IPC: B61L1/20
Filed: 1957-11-06
Abstract: 820,919. Hot-axle detectors. SERVO CORPORATION OF AMERICA. Nov. 6, 1957 [Nov. 6, 1956; Aug. 6, 1957], No. 34657/57. Class 40 (3). A detector for the hot axle bearings of rail wagons comprises a heat-responsive control element, e.g. an infra-red detecting thermistor, mounted alongside the track, and an inclined optical system with its axis preferably at 20- 50 degrees to the horizontal and in a plane parallel to the rail track. There may be two such systems pointing in opposite directions with trip means operating shutters appropriate to the direction of movement of the wagons. There may be two heat detectors with separate optical systems, or a single detector with a mirror operated by the trip means, to incline in the receiving direction and reflecting the heat on to the detector. Alternatively, the shutters are controlled and held by the trip means. The journal box 18 is progressively scanned by the detector 10 as the rail car 19 moves along the track 13. The wheel trip 34 maybe a magnetic circuit closed by the wheel flange 25 and in a circuit containing a single-stability multivibrator or a time-delay grop-out relay giving a gate interval for the detector of about 50 milliseconds, sufficient even for slow trains of 5 m.p.h. A storage device in conjunction with the wheel trip operates the shutter of the detector for a sufficient period when the train is slow. Two wheel trips in series with a flip-flop circuit give a square gating pulse sufficient for full exposure of the hot box (Fig. 6, not shown). A single detector cell 14 (Fig. 8) serves duplicate optical systems 44, 44<1>, with shutters 51, 52 operated by solenoids 53, 54. The sequence in which the wheel trips 34, 56 are operated affects the directionally responsive switch 74<1> which determines the actuation of the solenoid and storage means 38, 38<1>, supplies a steady signal to relay means 76 to control the trip pulses, and turns on the recorder, alarm and telemetering devices 30, 31, 32.
Patent GB-992414-A (GB)
Title: Production of titanium dioxide by vapour phase oxidation
Inventor: EVANS ARTHUR WALLACE
IPC: C01G23/07
Filed: 1961-09-27
Abstract: TiO2 is produced by reacting a titanium tetrahalide (not fluoride), an aluminium halide (not fluoride), and an oxygenating gas in a fluidized bed of particles containing Si and O in chemical combination, the aluminium and titanium halides being introduced separately. Of the total bed particles having diameter 40-1000m , preferably at least 25% contain Si-O bonds, e.g. zircon sand ZrO2SiO2, sillimanite Al2O3SiO2, or pure SiO2.  A bed temperature of 900-1200 DEG  C. is maintained. Ti halide, preferably TiCl4, is introduced at 150-800 DEG  C., and moisture may also be separately introduced.  Al halide, preferably AlCl3 may be fed at 100-600 DEG C., in the oxygenating gas, e.g. O2, air, and is in a quantity such that 0.1-10% preferably 2-4% by weight of Al2O3 relative to TiO2 is produced. 60-80% of the TiO2 produced is contained in the effluent gas and can be recovered by known methods, while the remaining TiO2 is accreted on the bed particles which are continuously or intermittently removed and subjected to abrasion by wet or dry milling processes.  A wet process, using fine sand ball mills, of particle size 250-1000m , and water is preferred, the sand being subsequently separated from the pigment by sieving or preferential settling.
Patent GB-177212-A (GB)
Title: Improvements in the manufacture of concrete slabs applicable in the building of walls, partitions, floors, roofs and the like of houses and other erections or structures
IPC: B28B7/00
Filed: 1920-12-11
Abstract: 177,212. Hojgaard, K. N., and Schultz, S. Dec. 11, 1920. Slabs.-A plain or reinforced concrete slab has a cross-section of the form shown in Fig. 1.
Patent GB-306238-A (GB)
Title: Improvements in or connected with jigging or shaker conveyers
IPC: B65G27/00
Filed: 1927-12-28
Abstract: 306,238. Mavor & Coulson, Ltd., and Mavor, J. B. Dec. 28, 1927. Jigging conveyers.-In jigging conveyers of the kind in which successive portions of troughing are connected and held against relative movement endwise by wire cables C which extend from end to end of the conveyer and are engaged by members 2, 3 at the ends of adjacent sections of troughing, one oi these members is flat and the other is curved at the ends. According to the Provisional Specification each of the members may be curved.