baber/WOPTO huggingface dataset:
Patent GB-836526-A (GB)
Title: Improvements in tone-arms for gramophones
IPC: G11B3/38
Filed: 1958-09-23
Abstract: 836,526. Gramophone pick-ups. PHILIPS ELECTRICAL INDUSTRIES Ltd. Sept. 23, 1958 [Sept. 26,1957], No. 30351/58. Class 40 (2). The roller 3, in the solid-line position of Fig. 2, contacts the surface of the record 7 and holds the stylus 8 clear of the record in known fashion during record diameter-gauging. The member 12, pivoted at 11, is urged downwardly when clear of the edge of the record, bringing the brake shoe 13 into contact with the drum 14 and braking the previously freely-rotating roller 3; the roller, now acting on the record as a friction shoe, causes the assembly 2 to swing to the right in Fig. 2 around the axis 5 and the spring 9 then holds the assembly in the dotted-line position of Fig. 2, allowing the stylus 8 to engage the run-in groove of the record. In a further embodiment (Fig. 3, not shown), the member 12 is replaced by a second roller on the now common shaft 4, the shaft being journalled in a hole in the left-hand side of the frame 2 and only partially supported in a vertical slot in the right-hand side. The shaft 4 can thus pivot about the left-hand bearing hole and when the right-hand roller descends over the edge of the record, a projection on the shaft 4 engages a detent on the frame 2 to brake the roller 3, so that a similar retraction of the frame 2 occurs.
Patent GB-1108018-A (GB)
Title: A process for welding composite metal-oxide materials such as sintered aluminium powder (s.a.p.)
Inventor: BEGHI GIORGIO
IPC: B23K35/28
Filed: 1964-07-31
Abstract: 1,108,018. Fuel elements. EUROPEAN ATOMIC ENERGY COMMUNITY (EURATOM). 31 May, 1965 [31 July, 1964], No. 30352/64. Heading G6C. [Also in Division B3] A first member of composite metal-oxide material, e.g. sintered aluminium powder or a cement, is fusion bonded to a second member of metal, e.g. aluminium or magnesium or a zirconium alloy, or of the same or a different composite metal-oxide material, by heating a portion of the first member to produce a fused or softened zone, and relatively moving the members to immerse a portion of the second member in the zone and allowing the joint to solidify. The second member may be heated and one of the members rotated as immersion occurs. A protective atmosphere may be used. A fuel element canning tube of sintered aluminium powder (4-14% A1 2 0 3 ) is provided with an end plug of similar material (7% Al 2 O 3 ) by electrically heating a zone of an oversize plug to 700 C., immersing and simultaneously rotating an externally threaded end of the tube in the fused zone, maintaining the temperature for about. 5 minutes and then cooling. The excess portions of the plug are removed by machining. Alternatively the welded plug may be extruded or swaged to improve its mechanical properties.
Patent GB-341079-A (GB)
Title: Improvements in or relating to processes of extracting oil from vegetable matter
IPC: C11B1/04
Filed: 1929-10-07
Abstract: In the extraction of vegetable oils by pressure, the raw material, e.g. powdered soya beans, is subjected to a preliminary heat treatment with an oil whereby moisture is evaporated therefrom and the vegetable tissues are loosened, and thereafter the oil is removed, e.g. in a centrifuge.  The oil used is preferably identical with that extracted, or is suitable for admixture therewith, e.g. hardened fatty oil, liquid animal or vegetable or paraffin oils.
Patent GB-658788-A (GB)
Title: Depth control device for agricultural implements
IPC: A01B63/10
Filed: 1948-11-23
Abstract: 658,788. Agricultural implements. MONROE AUTO EQUIPMENT CO. Nov. 23, 1948, No. 30426. Convention date, June 24. [Class 6(i)] Relates to agricultural implements such as ploughs, cultivators and harrows, fitted with a depth-control wheel and adapted to be towed by an automobile and consists in providing a bracket structure detachable and adjustable on the implement frame, the structure including a hub assembly whereby the spare wheel of the automobile can be mounted as the depth-control wheel. A disc plough 5 connected to a motor vehicle 7 by a hydraulic lift 9 is provided with a depth-control device 11 attached to the plough frame 13. Rearward of the plough discs is a furrow wheel 19, the penetration of the discs being controlled by the elevation of the frame 13. The hydraulic lift 9 comprises two lower tension links 21 and an upper compression link 25, and is actuated from the vehicle to raise or lower the implement and to push the ground-engaging elements into the ground. The device 11 comprises a bracket 35, bolted to the frame member 15, Fig. 2, by means of an adjustable plate 41, and a wheel hub 42 supported on the bracket by an assembly 43 including a bracket 45 into which the end of a shaft 49, Fig. 3, is welded. The wheel hub is rotatably mounted on the shaft 49 and fits into a recess 53 in the bracket 45, the shaft projecting into a recess 57 in the hub, where it is secured by a nut 63 maintaining the hub against axial movement relative to the shaft. The bearing surfaces of the hub and shaft can be lubricated through a grease fitting 64. The bracket and shaft assembly is connected to the bracket 35 by a U-bolt 69 extending through flanges 65 on the bracket 45 and held away from the bracket 35 by a spacer-block 71. By loosening nuts 73, the wheel hub and bracket and shaft assembly may be adjusted vertically along the bracket 35. The outer end of the wheel hub has a flange 75 carrying spaced bolts 77 to which the spare wheel and tyre of the vehicle can be connected by passing the bolts through apertures 81 in the wheel rim 79, Fig. 2.
Patent GB-294037-A (GB)
Title: Process for oxidising ethyl alcohol
IPC: C07C45/38
Filed: 1927-11-14
Abstract: 294,037. Holzverkohlungs-Industrie Akt.-Ges., and Fuchs, O. Nov. 14, 1927. Acetaldehyde and its polymers; acetic acid; ethyl acetate; diethyl acetal. - In the catalytic manufacture of acetaldehyde from ethyl alcohol and oxygen-containing gases, the reaction products are dehydrated by cooling and are then treated with an anhydrous, or practically anhydrous, solvent for the aldehyde. Preferably, the condensate obtained by cooling the gases is used to wash the gases prior to the solution of the aldehyde, and from this condensate, which contains unchanged alcohol, acetic acid, and some acetaldehyde, the aldehyde may be recovered by distillation, the acetic acid and part of the alcohol may be recovered as ethyl acetate, and the remaining alcohol may be recovered as such. For dissolving the acetaldehyde from the cooled gases, it is preferred to use solvents which permit the direct further treatment of the aldehyde. For example, the solvent may be ethyl alcohol, in which event the solution, after addition of a small amount of mineral acid, yields diethyl acetal on distillation. The initial material may be dilute alcohol, and the catalysts may be such as are unsuitable for treating absolute alcohol, e.g. finely divided or platinized silver. In one example, a mixture of ethyl alcohol vapour and air is passed over silver wire gauze and the reaction products are cooled to about 15‹ C. in two coolers arranged in series. The gases are then washed in a tower to which the condensate from the first cooler is led, whereafter the acetaldehyde remaining in the gases is removed by washing with aldol. The solution of acetaldehyde in aldol may be treated, e.g. with alkalies, to form aldol. The condensate from the coolers is fractionated in a column to separate acetaldehyde and is then fractionated in a second column, after addition of a small amount of sulphuric acid, a distillate containing ethyl acetate and alcohol being obtained. In another example, the aldehyde is absorbed in acetic acid and the solution is oxidized in known manner to form acetic acid. Reference is made also to the production of paraldehyde.
Patent GB-682127-A (GB)
Title: Improvements in or relating to a system for indicating the magnitude of a condition
IPC: G01F23/26
Filed: 1950-12-14
Abstract: 682,127. Electric tests and measurements. LIQUIDOMETER CORPORATION. Dec. 14, 1950 [Jan. 14, 1950], No. 30516/50. Class 37. Apparatus for determining the amount of liquid, e.g. fuel oil, in one or more tanks comprises a cylindrical condenser immersed in each tank, whose total capacitance, dependent on the liquid level, is determined in a bridge circuit by comparing the bridge unbalance voltage with an adjustable, indicated, proportion of the bridge supply voltage. The condensers 12, 14 (Fig. 4), consisting of three concentric cylinders, the outer and inner cylinders being joined together, and the outer having suitable openings to allow the fuel to enter between the plates, are connected in parallel as one arm of a bridge 34. The other arms of the bridge comprising a fixed condenser 74, and the two halves of the secondary winding 76 of a transformer 78 fed by a Hartley type H.F. oscillator and amplifier 46, are located in a further cylinder 36 (Fig. 2) inside the condensers 12 or 14 to ensure a common temperature. The bridge 34 is normally unbalanced, and the unbalance voltage is fed to one valve 192 of a commutator 56, a similar valve 206 being fed with a proportion of the oscillator 46 output as determined by manually adjusted potentiometer 216, 222 and a motor-driven potentiometer 58. The input voltages are individually mixed in a transformer 196 with a 400 # A.C. voltage supplied through a lead 232, so that the valves 192, 206 are made conductive for alternate half-cycles of the 400 #. supply. The output from the commutator 56 is fed through an H.F. bandpass filter 62, rejecting any 400 # component, and fed to a detector 64 (Fig. 5) which rejects the H.F. component of the signal and leaves the 400 # envelope, subsequently amplified at 66 and fed to one winding 385 of a 2-phase motor 68, mechanically-coupled to the slider 212 of potentiometer 58 and an indicator 2, the other winding 386 of the motor 68 being fed with the original 400 # A.C. through a phase-shifting condenser 388, so that it rotates to move contact 212 of the potentiometer 58 to balance the system, simultaneously operating the countertype indicator 2, calibrated in terms of quantities of fuel. In a modification, Fig. 6 (not shown), for use with tanks of different sizes, each condenser has its own bridge circuit, and the unbalance voltages are fed to the commutator 56 in parallel through potentiometers adjusted so that each unit of unbalance voltage represents the same quantities of fuel in either tank.
Patent GB-1080688-A (GB)
Title: Improvements in or relating to battery charging apparatus
Inventor: GAYLER GEORGE ALFRED
IPC: H02J7/14
Filed: 1965-07-20
Abstract: 1,080,688. Charging batteries. WIPAC DEVELOPMENT Ltd. July 20, 1966 [July 20, 1965], No. 30795/65. Heading H2H. Overcharging of a battery 19 from a vehicle alternator 10 is avoided by a thermal switch 18, 23 which disconnects some of the windings 11, 15 at a voltage determined by a Zener diode 22. The voltage from the remaining winding 16 is sufficient to maintain the switch 18 open.
Patent GB-1484725-A (GB)
Title: Timing device
IPC: H03K17/28
Filed: 1975-06-25
Abstract: 1484725 Transistor timing circuits PORTACEL Ltd 25 June 1975 [11 July 1974] 30809/74 Heading H3T In a timer for converting an electrical signal into a corresponding time, the signal controls the heating of a heat sink, the temperature of which is sensed by a temperature sensitive element to control a timing circuit. In a circuit for periodically adjusting a fluid valve, the duration of the adjustment being dependent upon the difference between a measured value applied at T 1 , T 2 , Fig. 1, and a reference value tapped of VR 3 , the measured and reference values are applied to the inputs T 1 , T 2  of a differential amplifier and it is shown in the Specification that the power dissipation in transistors TR 3 , TR 4  is substantially proportional to the difference. TR 3 , TR 4  are mounted in an unpainted aluminium heat sink, Figs. 3 and 4 (not shown), together with a positive coefficient thermistor TH1, Fig. 2. Every four to ten minutes a timer TIM changes switch SW over, making TR 8  conduct, which in turn switches the transistors TR 9 , TR 10  of a Schmitt trigger circuit on and off respectively. Conduction of TR 9  makes TR 11  conduct, supplying current to a relay RL 1  which initiates adjustment of the valve. After a time which depends upon the resistance of thermistor TH 1 , and hence on the difference between the measured and reference values, capacitor C 4  charges to a sufficient level to cut off transistors TR 8  and hence the current to relay RL 1 . The circuit may be used to adjust periodically the supply of chlorine to water chlorination equipment.
Patent GB-358293-A (GB)
Title: Improvements in or relating to electromagnetic step-by-step switches
IPC: H01H67/06
Filed: 1930-10-15
Abstract: 358,293. Automatic exchange switches. COVENTRY AUTOMATIC TELEPHONES, Ltd. and PUCKETTE, C. C., of General Electric Co., Stoke, Coventry. Oct. 15, 1930, No. 30844. Grant of Patent opposed. [Class 40 (iv).] In a rotary stepping switch having wiper sets each comprising a number of angularly-spaced electrically-connected wipers engaging different rows of contacts to give increased capacity, the wipers of a set are connected to a common collecting ring. Constructions of feed brushes, shaft mountings, and position indicators are also described. A wiper set may comprise a pair of wipers 10, 11 mounted at 180‹ on the shaft 14 and connected by collecting ring 12 against which rests the feed brush 25. The feed brushes have looped ends to form tags and bent end portions which engage a groove 31 in the mounting 30 to prevent twisting, the mounting being in two parts connected by screws 32. The shaft 14 is secured at one or both ends, to prevent vibration and rotation, by a slotted plate 16 engaging grooves 15 in the shaft. The plate 16 is secured to the switch frame by a screw 20 and its end 17 may serve as a position indicator in conjunction with a numbered disc 18 on the shaft 14. The Provisional Specification describes also a ratchet drive in which the detent engages the tooth next but one ahead of the driving pawl which, if moved forward an excessive distance, rides up the detent so that the taking up of more than one tooth at a time is prevented. Specification 255,657, [Class 40 (iv), Telephones &c.], is referred to.
Patent GB-333453-A (GB)
Title: Improvements relating to the production of hydrocarbons from naphthalene
IPC: C07C4/00
Filed: 1929-10-11
Abstract: 333,453. Varga, J. Oct. 13, 1928 [Convention date]. Hydrogenized organic compounds, catalytic production of.-Naphthalene is hydrogenated at high temperature and under high pressure (preferably above 100 atmospheres) in presence of a catalyst consisting of a compound of molybdenum or tungsten, or both, in conjunction with 1-10 per cent of hydrogen sulphide which is stated to increase the activity of the catalyst. It is stated that when naphthalene and hydrogen are heated in presence of a catalyst there is a critical temperature usually lying between 400 and 500‹ C. at which a sudden absorption of heat occurs. Treatment above this temperature favours the production of benzene hydrocarbons, whereas if the temperature is maintained below the critical point tetrahydronaphthalene and dekahydronaphthalene are the principal products. High partial pressure of hydrogen favours the formation of benzene at the higher temperatures and dekahydronaphthalene at the lower ones; low partial pressures result in the production of homologues of benzene or of tetrahydronaphthalene, according to the temperature.
Patent GB-996746-A (GB)
Title: Improved photographic developing composition
IPC: G03C5/305
Filed: 1961-11-02
Abstract: 996, 746. Photographic developers. GEVAERT PHOTO-PRODUCTEN N.V. Nov. 2, 1961 [Nov. 4,1960(2)], No. 30966/63. Divided out of 949,643. Heading G2C. Photographic silver halide developers contain the reaction product of a polyalkylene oxide with a di- or tin-alkyl phosphite or with a di- or tin-alkyl phosphate. The reaction products are those described in Specification 945,340. Examples are given of developers containing compounds derived from polyethylene glycol and diethyl phosphite or triethyl phosphate. Specification 796,446 also is referred to.
Patent GB-1178086-A (GB)
Title: Chair
Inventor: DAY ROBIN HENRY
IPC: A47C5/06
Filed: 1968-06-28
Abstract: 1,178,086. Seats. S. HILLE & CO. Ltd. 28 June, 1968, No. 30978/68. Heading A4J. Weight bearing sleeves 12, of non- stretchable fabric, tightly spanning tubular metal seat frame 1, 2, are enclosed in bag-like covers (13), which may be of quilted p.v.c. The covers may be retained in position by zipping up their open ends. The covered frame 1, 2 is supported on a stand (F. Fig. 1, not shown) by screwing cross bar 8 to rail (5).
Patent GB-475988-A (GB)
Title: Improvements in appliances for introducing medicaments into body cavities
IPC: A61M31/00
Filed: 1936-11-13
Abstract: 475,988. Surgical injection appliances. LORENIAN, L., and LORENIAN, Z. Nov. 13, 1936, No. 31100. [Class 81 (ii)] An appliance for introducing, into the vagina or anus, liquid, viscous, or powdered medicines, or capsules or pills, comprises a cylinder 1 of paper, celluloid, rubber, or other flexible material containing the medicament and closed at its forward end by bending or contracting the edges towards the axis, the rear end housing a plug 5, which may be of the same material as the cylinder. As shown, the forward end is formed with deep serrations 2 which are bent inwardly to form the closure and is covered by a cap 4 preferably of the same material as the cylinder. Alternatively, the end may be closed by twisting about its axis. In use, the appliance is inserted and the contents ejected by pressure on the plug with a small rod, the closure opening under the pressure produced. The plug may be provided with means for displacing it.
Patent GB-535837-A (GB)
Title: Improvements in and relating to the preparation of softened rubber
IPC: C08C19/08
Filed: 1939-12-01
Abstract: 535,837. Softened rubber. BRITISH RUBBER PRODUCERS' RESEARCH ASSOCIATION, (Wentworth, V. H.). Dec. 1, 1939, No. 31245. [Class 70] In preparing softened rubber, latex is mixed with an emulsion of an organic peroxide and coagulation is effected by addition of formic acid, sodium silicofluoride or other coagulant which also breaks down the emulsion and causes precipitation of the peptiser in the coagulum. An emulsion of benzoyl peroxide and benzene in potassium oleate solution may be used. The coagulum is formed into sheets and dried in air at 120‹F. and may be afterwards smoked.
Patent GB-211922-A (GB)
Title: Improvements relating to sanding devices for electrically propelled vehicles
IPC: B60L13/00
Filed: 1922-11-16
Abstract: .211,922. Priestly, P. Nov. 16, 1922. Sand &c., distributing on wheel tracks. - In an -electrically - operated sanding device operated by the regenerative current produced when the motors run as generators and provide an electric braking action, the energizing coil of the rear sanding device is connected to the controller at the forward or driving end, and to the motor or motors, and the controller connections and contacts are arranged so that when the controller handle is turned to the " off " position, and without altering the position of the reversing handle, the necessary connections are made by which should the vehicle run backwardly, and the direction of rotation of the motor or motors reserved, each motor is connected so that it then runs as a generator and applies an electric braking action to the vehicle, the regenerative current produced also energizing the coil by which the sanding device is operated. The valve in the sand-box B<1> is connected by a rod b<2>, bell crank b<1>, connecting rod d<2>, and bell crank d<1> to the foot plunger D<1> operated by the driver. A bracket f<9> connects the electromagnet F<1> to the connecting rod d<2> so that when current is supplied to the electromagnet it operates the sand valve. The motors M, P are connected to earth at e<2> and, in parallel, to the main 1 connected to the controller at the other end of the vehicle. Each controller C' is provided with contacts c<1>, c<2>, and the energizing means in each electromagnet comprises two coils connected to a common earth at e<1> so that when contact is made at c<2> by the controller handle in normal braking of the vehicle, one coil is energized through the main 2 and sand deposited in front of the front wheels. When the controller handle is turned to the " off " or " neutral " position and without altering the position of the reversing handle, contact is made at c<1> to put the motors in parallel with one of the two coils of the rear sanding device so that should the car run backwardly the rear electromagnet is energized and sand deposited on the rails.
Patent GB-485119-A (GB)
Title: Improvements in television
IPC: H04N5/06
Filed: 1936-11-16
Abstract: 485,119. Television transmitters. RADIOAKT.-GES. D. S. LOEWE. Nov. 16, 1936, No. 31309. Convention date, Nov. 18, 1935. [Classes 39 (i) and 40 (iii)] An iconoscope screen 1 has a metal-coated marginal electrode 7a, 7b maintained at a suitable potential from a source 9, so that when the scanning cathode-ray beam 2 impinges on it at the end of each line and each picture, a synchronizing signal is developed. The electrode 7a, 7b is preferably coupled capacitively to the same counter-electrode as the mosaic screen 1, and a single amplifier 6 is used for both the picture and synchronizing signals. According to the Specification as open to inspection under Sect. 91, synchronizing signals are developed by applying the deflecting potential to an amplitude filter 12, Fig. 2 (Cancelled), which is biassed to conduct only at the peaks of the deflecting oscillations. The pulses so obtained are applied over transformer 14, tuned to the synchronizing frequency, and through a rectifier 15 to the grid of the picture signal amplifier 6. When electromagnetic deflection is employed, the amplitude filter is connected in parallel to the deflecting coils, or to a resistance in series with the deflecting coils. This subject-matter does not appear in the Specification as accepted.