baber/WOPTO huggingface dataset:
Patent GB-1360805-A (GB)
Title: Signal processing
IPC: B21B37/66
Filed: 1971-07-23
Abstract: 1360805 Controlling rolled material thickness SIEMENS AG 23 July 1971 [25 July 1970] 34810/71 Heading G4H Apparatus for controlling the thickness of rolled material by adjusting the roll gap in response to rolling force includes an analogue to digital converter which receives analogue rolling force signals and produces digital control signals when the rolling force is outside a particular range. This range is varied by control of the gain of an amplifier in the converter, the gain control signal being generated by apparatus comprising two sets of threshold devices which respond to positive and negative excursions of the rolling force from a mean and the outputs of which provide a pattern from which the amplifier gain is varied; the direction of the variation depending on the extent of the positive and negative excursions of subsequent portions of the force signal. Load cells 4 produce a voltage proportional to roll force which is fed via summing amplifier 3 to variable gain amplifier 2. The apparatus comprises eight threshold devices, four of which 15,13,11 and 5 respond to voltages of relative magnitude 1, 2À5, 3À4, 3À5 respectively above a mean and the others 16, 14, 12 and 6 respond to like voltages below a mean. The amplified voltage from 2 is fed to threshold circuits 5 and 6 which, if actuated, operate circuit 7 which produces a train of positive circuit 5 or negative circuit 6 pulses which are fed to forward/backward counter 8 and to means for adjusting the roll gap. The counter contents is fed via digital to analogue converter 9 as a negative feedback to amplifier 2. The output of variable gain amplifier 2 is also connected via amplifier 10 to threshold circuits 15, 13 and 11 and directly to threshold circuits 16, 14 and 12. These threshold circuits are connected to evaluating circuit 17 which comprise logic units which serve to increase or decrease the count in counter 40 by one unit for each cycle of the load cell output variation. The counter reading is fed to digital to analogue converter 43 which varies the gain of amplifier 2 in steps of two. The circuit 17 operates so that if for one cycle of the analogue input: (a) all devices 11-16 respond the amplifier gain is decreased, (b) devices 15 and 16 respond but 13 and 14 do not, the amplifier gain is increased, (c) no devices respond, the amplifier gain is increased, (d) more devices in set 11, 13, 15 than in set 12, 14, 16 respond, the amplifier gain is increased. This serves to keep variations due to roll eccentricities in the range between the thresholds of devices 15 and 11 and prevents alteration of the roll gap unless the characteristics of the rolled material change.
Patent GB-933299-A (GB)
Title: Bleaching cellulosic fibres
IPC: D06L4/30
Filed: 1961-09-28
Abstract: Cellulosic fibres are bleached by a process comprising the steps of (A) treating them with an aqueous alkaline solution containing 0,1-1,5% by weight of ammonium hydroxide at 160 DEG -250 DEG F. for at least 15 minutes, (B) partially bleaching them in an aqueous alkaline hypochlorite solution having a pH of 9-12, (C) scouring them in an aqueous bisulphite solution having a pH of 1-5 and (D) bleaching them in aqueous hydrogen peroxide solution.  Prior to step (A) the fibres may be desized using an enzyme desizing solution, e.g. an amylase solution, and may then be washed in warm water at a temperature of 90 DEG -160 DEG F. for 3-15 minutes.  The alkaline solution used in step (A) may be a sodium carbonate solution containing not more than 2% by weight of sodium carbonate and 0,1-1,5% by weight of ammonium hydroxide and having a pH of 9-11,5. Step (B) may be carried out at 50 DEG -150 DEG F. for 30 minutes-1 hour using a sodium hypochlorite solution having a concentration in the range of from 3-32 grams per litre and a pH of 9-12.  The fibres may be scoured in step (C) with a 0,1-1% by weight aqueous sodium bisulphite solution having a pH of 1-5 for 5-30 minutes at 50 DEG -120 DEG F. and after washing may be treated in step (D) with hydrogen peroxide solution having a concentration of 0,2-1,4% by weight and a pH of 8,5-11 for 1-3 hours at 70 DEG -185 DEG F.  The hydrogen peroxide solution may contain 0,1-2% by weight of sodium silicates of the general formula Na2O(SiO2)x in which x=2-4. Fabrics comprising cotton or linen fibres alone or in admixture with wool, viscose rayon or nylon fibres may be treated.
Patent GB-1037930-A (GB)
Title: Improvements in or relating to a moulding composition for forming into an arc exposure surface of a moulded electrical insulating element
IPC: H01B3/00
Filed: 1964-08-26
Abstract: Insulating, are suppressing members such as the walls of an arc-chute, switch or fuse housing or the like are moulded from a composition containing 25-80% of hydrated alumina and 10-50% of a binder generally as described in Specification 837,673 with the addition of a small percentage of an arc interrupting additive which may comprise a compound of one or more of the following electronegative elements: F, Cl, Br, I, S, P or B with one another or with Mg, Al, Zr, Zn, Mo or with the radical NH4-, the compound being bound by predominantly covalent bonds. Alternatively, it may be a halogenated hydrocarbon.  The composition may also include a filler such as aluminium oxide or magnesium oxide or glass or asbestos fibre or one which will absorb a liquid additive, e.g. carbon tetrachloride absorbed in wood flour. The binder may be a thermosetting resin such as melamine, epoxy, urea, polyester or phenolic or elastomers such as butyl rubber or a thermoplastic such as polyethelene, polypropylene, polyamide, acetal or acrylic resins or calcium containing material such as Portland cement or mixtures of shale, clays and lime.  A number of specific examples of the composition are described with details of results obtained using them in a standard test apparatus (Fig. 5, not shown).
Patent GB-1268994-A (GB)
Title: Vehicle braking power regulation systems
IPC: B60T8/66
Filed: 1970-07-20
Abstract: 1,268,994. Antiskid braking systems. DAIMLER-BENZ A.G. 20 July, 1970 [22 July, 1969], No. 35071/70. Heading F2F. A vehicle antiskid braking system includes wheel sensors in the form of A.C. generators G 1  ... G 4  by means of which both wheel slip and wheel acceleration can be determined the signals representing them being added together to form a signal which constitutes the control signal for the brakes. Slip is determined by comparison with a reference standard and acceleration is determined by differentiation of the wheel speed. The impulses from the generators are fed to frequency/voltage converters FSU 1 ...FSU 4 , the output voltages being brought together via diodes A 1  to A 4  to form at point UM a maximum voltage determined by the wheel rotating at the highest speed which voltage forms the reference standard for determining slip. It is divided in the desired response/speed ratio by resistors W11/W12 or W31/32 and fed to differential amplifiers DV 11  to DV 41 . The wheel speed signal also by-passes the diodes and is fed to the second input of the amplifiers which serve as comparators and are designed as threshold valve switches, their output signals being logical yes/no signals. The outputs of the amplifiers for each wheel are fed to NOR gates which provide output signals to operate valves E 1 ...E 4  controlling braking pressure. The differentiators D 1 ...D 4  which provide acceleration signals are each connected to two frequency evaluation members FB 11 , FB 12  &c. to avoid high frequency changer in the speed of rotation due to conditions other than slip from influencing the control.
Patent GB-435179-A (GB)
Title: Improvements in and relating to the manufacture of moulding or coating compounds
IPC: B05D5/12
Filed: 1933-12-14
Abstract: Coating and moulding compositions are produced by forming an aqueous dispersion of a polymerized vinyl compound.  According to examples:--(1) Glycerin, saponin, toluol and water are mixed together, and powdered polymerized styrol is then added, preferably at a raised temperature.  More water is then added to produce a coating liquid.  The dried coating may be heated to melt the polymerized styrol.  Softening agents such as chlor-diphenyl compounds or glycerinphthalic acid resins may be present.  (2) Resin saponified with potassium carbonate is used instead of saponin, and benzene instead of toluol, while the polystyrol is added in the form of a solution.  (3) The polystyrol is added in the form of a solution in styrol and toluol.  Alcohol or acids may be added to the pastes or emulsions of the above-mentioned examples, and the solid substances thereby separated may be used for making moulded bodies.ALSO:Coating and moulding compositions are produced by forming an aqueous dispersion of a polymerized vinyl compound.  According to examples: (1) Glycerin, saponin, toluol, and water are mixed together, and powdered polymerized styrol is then added, preferably at a raised temperature.  More water is then added to produce a coating liquid. The dried coating may be heated to melt the polymerized styrol. Softening-agents such as chlor-diphenyl compounds or glycerin-phthalic acid resins may be present.  (2) Resin saponified with potassium carbonate is used instead of saponin, and benzene instead of toluol, while the polystyrol is added in the form of a solution.  (3) The polystyrol is added in the form of a solution in styrol and toluol.  Alcohol or acids may be added to the pastes or emulsions of the above-mentioned examples, and the solid substances thereby separated may be used for making moulded bodies.
Patent GB-484464-A (GB)
Title: Luminous indicators for electric switches
IPC: H01H9/18
Filed: 1936-12-21
Abstract: 484,464. Luminous signs. CAIN, A. Dec. 21, 1936. No. 35282 /35. [Class 3 (ii)] A metal plate H either circular or arrow-shaped is coated directly on its outer surface with luminous paint, and is provided with an integral pin P or with separate screws to enable it to be fastened to a wall in the neighbourhood of an electric switch to assist in locating it in the dark.
Patent GB-772880-A (GB)
Title: Improvements in and relating to hop picking machinery
IPC: A01D46/02
Filed: 1954-12-07
Abstract: 772,880. Picking hops. SANTER, J. W. Nov. 24, 1955 [Dec. 7, 1954], No. 35349/54. Class 6(3).  A hop-picking machine comprises a foraminous drum 6 with a meshsize sufficient to permit the passage of hops, the bines being received in the pass 9 between the drum 6 and a co-operating surface 8, and the drum being driven relatively to the surface. The surface 8 may be fixed, but is preferably a similar drum driven in the opposite direction from the drum 6, the two drums being rotated by belts 7, 14 from the power takeoff 2 of a towing tractor. The drum 8 is carried by arms 11 which enable the spacing 9 to be variable. To assist insertion of the bines into the pass 9 rollers 4 are provided. The stripped hops and laterals are carried by a conveyer 16 to a separator comprising a further mesh drum 18 and co-operating mesh surface 19, the hops being discharged by a hopper 21. The bines are inserted into and removed from the machine without severance from the ground.
Patent GB-891619-A (GB)
Title: Improvements relating to rigid axle suspensions on vehicles
IPC: B60G11/18
Filed: 1959-10-19
Abstract: 891,619. Torsion bar springs. DAIMLERBENZ, A.G. Oct. 19, 1959 [Oct. 18, 1958; Nov. 6, 1958], No. 35398/59. Class 108(2). A rigid axle suspension comprises torsion bars 13, 14, extending longitudinally of the vehicle, each being rockably mounted in brackets 21, 22, on the rigid axle 10 and to the vehicle frame at 23, 24 and transversely extending torsion bars 15, 16, mounted rockably on the frame at 23, 24 and attached rigidly to the frame at 25, 26. The bearings 21-26 may be resilient. A longitudinal link 18 can rock in an elastic bearing 17 supported on the rigid axle 10 and has its ends in bearings 19, 20, on the vehicle frame. On simultaneous deflection of both sides of the suspension, only the torsion bars 15 and 16 are stressed, the bars 13, 14, acting as rigid lever arms. If only the suspension on one side is deflected, e.g. of the wheel 12, then due to the inclination of the rigid axle there is resilient twisting of the bars 13, 14, as well as the bar 16, so that the resistance to. upward movement of the wheel is almost as great as in the case of a simultaneous deflection of the wheels. There may also be bending of the bars 15, 16, depending on the softness of the elastic bearings 23, 24. Braking and driving moments are taken by articulation of the link 18 and the bars 13, 14. The bars 13 and 15 (and 14 and 16) may be separate parts or bent from a single length. In modifications (not shown) a transverse link may replace longitudinal link 18 and the bars 13, 14, 15, 16 have upwardly bent ends, the link 18 may be replaced by two inclined longitudinal link bars or the limbs of the longitudinal link 18 may be connected to or continue in. one piece with the transverse bars 15. 16. The elastic bearings may comprise outer semi-cylindrical shells of metal 31, 32, and inner part cylindrical shells of elastic material 33, 34 held together by retaining rings 35, 36, and are held to the frames by brackets 37. The rings 35, 36 may be shrunk on the shells 31 and 32.
Patent GB-830776-A (GB)
Title: Sound film apparatus with magnetic sound recording and reproduction device
IPC: G11B15/34
Filed: 1958-11-04
Abstract: 830,776. Magnetic sound-film apparatus. AGFA A.G. Nov. 4, 1958 [Nov. 13, 1957], No. 35405/58. Class 40 (2). In a sound and picture film apparatus a film guide plate is provided having apertures in which magnetic record heads are movably arranged for resilient contact with the film, and means are provided for supporting and urging the film against the said guide-plate, Both the said guide-plate and the supporting means are mounted on a plate 12 as a unit. The guide-plate 14 is secured to an intermediate plate 13 carrying a spring-loaded arm 16 on which is mounted a record/reproduce head 17, the pole tips of which normally protrude through an aperture 21 in the plate 14. A further spring-loaded arm 18 on the arm 16 carries an eraze head 20 which normally protrudes through an aperture 22 in the plate 14. The said supporting means comprises an angular carrier 30 on which is mounted a spring-loaded pressure-plate 28. The carrier 30 is raised into the operative position by rods 31, 32 thereon by spring-loaded levers 38, 39, respectively, pivoted on rods 40, 41 on the plate 12 and acted upon by levers 47, 48 coupled together by a link 55 and. moved into the operative position by a lever 61 under the control of a push-button 58. In the operative position a pressure roller 33 carried by the rod 32 presses the film against a part 23 of a shaft 24 carrying a stabilizing flywheel 25. Operation of a key 65 releases the key 58, so that the apparatus returns to the inoperative position. The keys 58, 65 may also be utilized to control the drive of the film and the recording apparatus.
Patent GB-155547-A (GB)
Title: Improvements in and relating to electric fuses
IPC: H01H85/26
Filed: 1920-12-17
Abstract: 155,547. Cracoanu, O. Dec. 17, 1919, [Convention date]. Fusible cut-outs. - In a multiple fuse having a switching contact d supported by a rotatable disk (not shown), the contact is prevented from forming a continuous metallic track between the contact terminals c of the fuels by means of two or more rib-like projections i on the fuse body a, which are interrupted at points which are staggered in relation to one another, upon which ribs the moving contact d slides.
Patent GB-962778-A (GB)
Title: Activation of deactivated hydrodenitrification catalysts
IPC: B01J27/04
Filed: 1962-09-18
Abstract: In a method of activating a nickel sulphidemolybdenum sulphide-alumina catalyst containing at least 10% by weight of sulphurs combined with Mo and Ni which themselves total at least 17% of the catalyst, which catalyst has been deactivated by deposition thereon of combustible carbonaceous material during use for hydrogen treating hydrocarbon oils at elevated temperature and pressure, a major portion of the carbonaceous material is burnt off and a major portion of sulphides of Ni and Mo is oxidized to oxides of Ni and Mo below 750  DEG F. in the presence of a dry combustion supporting a gas free of oxides of sulphur, until combustion ceases and then the catalyst is resulphided.  Examples are given in which resulphiding is effected using hydrogen containing dimethylsulphide.  Specification 962,777 is referred to.
Patent GB-1244147-A (GB)
Title: Improvements relating to pianos
Inventor: LIENERT WERNER MEINRAD
IPC: G10C9/00
Filed: 1970-07-22
Abstract: 1,244,147. Stringing piano frames. WURLITZER CO. 22 July, 1970, No. 35609/70. Heading G5J. A method of installing strings in a piano frame 40 comprises the steps of inserting the tuning pins of a series of pre-assembled string-pin assemblies 10 in the apertures 26 of a jig 24 with the upper, tool-receiving end portions 22 of the tuning pins being exposed above the jig, fitting a carrier 30 to the exposed end portions, separating the carrier 30 with the string-pin assemblies 10 from the jig and installing the tuning pins of the assemblies in the apertures 42 of the piano string plate, and removing the carrier from the pins. The jig contains a series of apertures arranged in a pattern the same as that of a part of the pattern of apertures in the tuning pin receiving portion of the piano frame. The jig may be provided with a hitch pin 28 aligned with each pair of tuning pin apertures around which the hitch pin loops of the strings may be placed, and the strings may be held in position relative to each other by means of adhesive tape 31. The jig may be articulated with a hinged joint 36 so that the carrier and string pin assemblies may be separated from the jig by folding the jig at the joint. The carrier may be fabricated from a flexible elastomeric material such as vinyl plastisol sheeting.
Patent GB-374074-A (GB)
Title: Improvements in or relating to electrical machines
IPC: H02K57/00
Filed: 1930-11-26
Abstract: 374,074. Sound - reproducing apparatus associated with kinematographs. SIEMENS & HALSKE AKT.- GES., Siemensstadt, Berlin. Nov. 26, 1930, No. 35631. Convention date, Nov. 29, 1929. [Class 40 (ii).] Synchronous driving units, each comprising two stator windings and an unwound rotor, are combined in various ways to simulate the action of machines of known types. In building up a machine of such units a number of rotors are rigidly coupled together, successive rotors being staggered by 360/2n electrical degrees when n = 2, and 360/n degrees when n is greater than two, n being the number of phases for which the machine is designed or, if the numbers on the primary and secondary sides are different, the greater of the two. The windings of the units are so connected that each phase on the one side is linked with each phase on the other. The Figure shows an arrange. ment for the transmission of synchronous movements. Two machines 55, 56 each comprising two rotors 57, 58 and 59, 60 and primary windings 61, 62 and 63, 64 are fed from single-phase mains. The secondary windings 65, 66 and 67, 68 are connected as shown. By giving the two sets of rotors different tooth numbers they can be made to give any speed ratio. For the transmitting machine a commutator-machine of ordinary type may be substituted. This arrangement is stated to be especially applicable for talking films, the picture apparatus being driven by the commutator motor and the sound apparatus by the machine herein described.
Patent GB-324752-A (GB)
Title: Improvements in rotary compressors and exhausters
IPC: F04C18/344
Filed: 1928-12-03
Abstract: 324,752. Noblett, A., Pulsford, F. C., and Ashwell & Nesbit, Ltd. Dec. 3, 1928. Fixed-abutment type; balancing moving parts; cooling parts.-In a rotary compressor or the like in which the outward movement of radially sliding vanes h carried by an eccentric rotor is limited by projections h<1> at the inner ends of the vanes which engage the inner surface of rotatable anti-friction rings n located in recesses m in end caps i of a cylindrical casing a, the rings not being open to the working space, the rings are lubricated from the lubricators provided for the bearings k of the rotor shaft. The lubricators are attached to chambers o bolted to the end caps i. Spring-pressed bushes p surround the shaft in the chambers o. A lubricator may be provided at the inlet port. A cooling jacket d is provided in the casing a.
Patent GB-738965-A (GB)
Title: Improvements in sound record, method and apparatus
IPC: G11B3/08
Filed: 1953-12-22
Abstract: 738,965. Recording and reproducing sound. JONES, E. W. Dec. 22, 1953, No. 35641/53. Class 40 (2). In a sound-recording apparatus the distortion and variation in depth of the groove section, Fig. 7, caused by the arcuate passage, Fig. 4, of a stylus pivoted on an axis 17 parallel to the record 20, is avoided by making the stylus 10 right-angled in shape, Fig. 2, and pivoted on an axis at right-angles to the record surface.
Patent GB-619336-A (GB)
Title: Improvements relating to electro-brightening treatment of metals
IPC: C25F3/16
Filed: 1946-12-03
Abstract: 619,336. Electro-polishing metals. HIGH DUTY ALLOYS, Ltd., and WHITBY, L. Dec. 3, 1946, No. 35766. [Class 41] Metals, particularly aluminium, copper, brass, zinc, stainless steel and nickel are anodically polished in an electrolyte containing as its principal constituents orthophosphoric acid and one or more of the substituted carbinols RCH2OH, R1R2CHOH or R1R2R3COH, where R, R1' R2' R3 are open or closed chain hydrocarbon radicals, the total number of carbon atoms in the radical R being not less than 2. Examples of substituted carbinols are n-butyl alcohol, cyclohexanol, commercial amyl alcohol, 2-butanol (secondary butyl alcohol) iso-propyl alcohol, 2-methyl, 2-butanol (tertiary amyl alcohol), 3-pentanol (diethyl carbinol). The cathodes are of lead or stainless steel and the bath may be agitated, e.g. by compressed air.
Patent GB-1099909-A (GB)
Title: Speed sensing device
IPC: F02D9/00
Filed: 1965-08-20
Abstract: 1,099,909. Fluid-pressure servomotor systems. B. WALKER. Aug. 20, 1965, No. 35866/65. Heading G3P. The pressure difference between the inlet and outlet of a centrifugal pump 4 is picked up by a Pitot tube 26 and a fluid connection 22 and applied to an actuator 30 for an electric switch 50. The pump forms part of an engine cooling system having a pressurized radiator 6 and is driven by a belt 100 from the crank-shaft 1 while the switch controls an idle fuel shut-off or other speed control device. A screw 35 adjusts one of a pair of opposed springs acting on opposite sides of a piston or diaphragm in the actuator to vary the speed at which the switch is either opened or closed. On a further actuator construction, two single-acting diaphragms are coupled by a link having a rocker-arm connection with the switch.