baber/WOPTO huggingface dataset:
Patent GB-831047-A (GB)
Title: Improvements in and relating to indicating devices for rotary pumps
Inventor: VANDERSTEGEN-D STAMFORD ROBERT
IPC: F04C14/22
Filed: 1957-02-01
Abstract: 831,047. Rotary pumps. PLENTY & SON Ltd. Jan. 31, 1958 [Feb. 1, 1957], No. 3599/57. Class 110 (2). [Also in Group XIX] A variable-capacity reversible rotary pump is provided with flow indicating means attached to the control spindle thereof comprising a collar 26 which is held against axial movement relative to the hand wheel 36 of the spindle by a lug 28 and which is rotated relative to said spindle by a pin-and-slot connection 32, 34. The collar itself is calibrated or else provided with a pointer 40 which co-operates with a scale 42 mounted on the spindle as shown. Specification 740,934 is referred to.
Patent GB-789774-A (GB)
Title: Improvements relating to brazing fins to tubes
IPC: B23K1/00
Filed: 1956-02-06
Abstract: 789,774. Tubular heat exchange elements. BROWN FINTUBE CO. Feb. 6, 1956 [Feb. 16, 1955], No. 3614/56. Class 64(3) [Also in Group XXII] A heat exchanger tube 10 is provided with spaced longitudinally extending fin members 11 brazed to the internal surface of the tube. A spring 16 employed within the tube to support the fins during brazing may remain in the tube after brazing to increase turbulence in the fluid flowing through the tube, and the internally finned tube may be provided with transverse or longitudinal external fins.
Patent GB-1001177-A (GB)
Title: Process for the preparation of trialkyl phosphites
IPC: C07F9/142
Filed: 1964-01-28
Abstract: Trialkyl phosphites are obtained by reacting an alkanol with phosphorous trichloride or phosphorous tribromide in the presence of a hydrocarbon tertiary amine whose hydrohalide salts are liquid at the reaction temperature and selectively extracting the trialkyl phosphite from the reaction mixture using as an extraction solvent a liquid aliphatic or cycloaliphatic hydrocarbon having more than 3 carbon atoms or a mixture of such hydrocarbons.  The solvent may be added to the reaction mixture before the reaction begins, during the reaction or afterwards and the total amount of amine may be present at the beginning of the reaction or a part may be added during the reaction. Suitable alkanols preferably contain 1 to 4 carbon atoms such as methanol, ethanol, propanol, isopropanol, sec. butanol and tert. butanol. It is preferred that the alkanols be anhydrous. Suitable hydrocarbon tertiary amines are trialkyl amines having from 5 to 10 carbon atoms in each alkyl group for example, triamylamine, trihexylamine and triisooctylamine; alkenylamines for example triallylamine; cycloalkylamines for example tricyclopentylamine, and mixed amines such as dialkenylalkylamines.  Suitable hydrocarbons for extraction are alkanes, alkenes, cycloalkanes and cycloalkenes such as pentane, methylcyclopentane, cyclohexane, cyclohexene, hexane, hexene-2, heptane, octane, isooctane; 2,4,4 - trimethylpentene - 1, nonane, decane and decahydronaphthalene, or mixtures thereof. The extraction solvent should preferably have a boiling point at least 20 DEG  C. below that of the trialkyl phosphite being extracted.  In the process the stoichiometric amount of alkanol used is preferably slightly in excess of the relative amount of phosphorous halide. The temperature of the reaction may vary from - 30 DEG  to 200 DEG  C., the preferred range being 15 DEG  to 65 DEG  C.  Examples are given for the preparation of triethyl, triisopropyl, tri-n-butyl and trimethyl phosphites using heptane or isooctane as the extraction solvent.
Patent GB-588641-A (GB)
Title: Improvements in and relating to door frames
IPC: E06B3/988
Filed: 1945-02-14
Abstract: 588,641. Door frames. JOHNSON, J. F. Feb. 14, 1945, No. 3732. [Class 20 (iii)] [Also in Group XXV] A door frame comprises channel-shaped sheet metal head and jambs which are mitred at the joints, and provided with mutually interlocking portions for positioning them relatively to one another, and reinforcing and connecting members extending between the channel side walls secured together by fastening means. As shown, the jambs 1 and head 2 are of similar symmetrical channel section so that the frame is reversible and the door may be hinged to either side. The top of each jamb is covered by a perforated plate 8 which is bolted, screwed or riveted to a similar perforated plate 18 at one end of the head when the frame is assembled. The. head is positioned relatively to the jambs by a flange 23 and a box-shaped member 25 which fit into the slot 11 and door stop 3 of the jamb respectively. A channel-shaped sill (not shown) is fixed to a spacing bar joining the lower ends of the jambs which are secured to the floor by angle brackets. Recesses 33, Fig. 1, are provided for hinges, backed by hinge securing means such as a perforated metal plate. The unused recesses have sliding cover plates 38 and similar recesses and cover plates are provided for the striking plate for the door latch. The frame may include a hollow metal transom 40 correctly positioned e.g. by means of a lug 44 and hole 45 on each jamb, and connected to the jambs by a tension member 47. A striking plate may be provided for the latch of a transom window (see Group XXV).
Patent GB-162640-A (GB)
Title: Improved process for the preparation of photo-collographic plates for printing with greasy ink
IPC: G03F7/14
Filed: 1921-02-01
Abstract: 162,640. Sperati, M. de. April 17, 1920, [Convention date]. Photo-mechanical printing-surfaces.-In the known process of converting a photographic r.egative into a printing-surface by resensitizing the negative with bichromate and exposing it from the back, the silver image is first treated in an intensifying bath of bichloride of mercury and ammonia to make the image portions more absorbent to water and more repellant to ink. Negatives on glass or on flexible films can be used to obtain rigid or flexible printing-surfaces. The productions from negatives which it is not desired to destroy can be used. After intensification the negative is re-sensitized with bichromate and printed through the back. The original image may be dissolved out before or after re-sensitizing. The resensitized negative after exposure is washed in running water. It may then be dried and, when required for printing, prepared by a bath of water, glycerine, and ammonia, prior to inking. The Specification, as open to inspection under Sect. 91 (3) (a) states also that negatives with images broken up by dots may be used. This subject-matter does not appear in the Specification as accepted.
Patent GB-716895-A (GB)
Title: Improvements in or relating to artificial teeth
IPC: A61C13/00
Filed: 1952-02-13
Abstract: 716,895. Artificial teeth. STRACK, R. Feb. 13, 1952 [Feb. 14, 1951], No. 3829/52. Class 81(2) A denture is furnished with abraded postericr teeth, the masticating surfaces of which form part of a reflexed smoothly curved occlusal surface I and are so arranged that lines D normal to and passing through the middles of the two bicuspids A meet below the occlusal face I, those of the two rearmost molars B meet above the surface I, those of any intermediate molars C being substantially at the position of inflexion of the occlusal surface I so that the said surface is free from steplike interruptions.
Patent GB-607520-A (GB)
Title: Securing device for the foldable hoods of open-type motor-cars
IPC: B60J7/185
Filed: 1946-02-07
Abstract: 607,520. Screw fastenings; dowels; locking- nuts. CARBODIES, Ltd., and ORR, J. H. Feb. 7, 1946, No. 3835. [Classes 44, 89 (i) and 89 (ii)] [Also in Group XXXII] A folding &c. hood for a motor car is held in the erected position by a dowel 22 secured in the top rail 18 of the windscreen frame and engaging a socket 14 fixed in the peak rail 11 of the hood. A screw 21 slidable between stops in the dowel mounting engages a nut 13 forming a continuation of the socket 14 to hold the parts together with interposed lengths of deformable rubber tubing 28 to act as a seal and also to prevent the screws from slackening under vibration. The dowel pins are in two parts 19, 22, screwed together so as to clamp between them the supporting rail 29. A projection 31 on the part 19 overlaps the flange 32 to prevent rotation during screwing-up of the part 22. In the disengaged position a spring 26 confined between the part 22 and a collar 25 on the screw holds the screw against rattle.
Patent GB-1503195-A (GB)
Title: Weighing apparatus with tare facility
IPC: G01G23/16
Filed: 1976-01-28
Abstract: 1503195 Measuring weight electrically W & T AVERY Ltd 28 Jan 1976 [29 Jan 1975] 3858/75 Heading G1N An electrical weighing apparatus includes means for offsetting the gross weight signal by a selected voltage representing the weight of one of a plurality of different packagings, the resultant signal voltage representing the weight of the contents only. A group of potentiometers 12, 13 connected in parallel across a voltage source have their sliders preset to represent the weight of each of a number of different standard packagings, the appropriate one being selected by switch 21 and fed to terminal 16 through FET 17 for subtraction from a gross weight signal, FET 17 is closed by manual operation of switch 23 via circuitry which incorporates means for opening FET 17 if the nett weight is below a preset value, when a warning signal is also produced and the gross weight signal is delivered.
Patent GB-1038781-A (GB)
Title: Electronic quantizer
IPC: H03M7/00
Filed: 1963-01-30
Abstract: 1,038,781. Electric selective signalling systems. GENERAL DATA CORPORATION. Jan. 30, 1963 [Feb. 5, 1962], No. 3917/63. Heading G4H. In a voltage digitizing circuit, Fig 1, first a " coarse " 1 two decimal-digit digitization D1, D2 is effected and then this coarse digital representation is converted 6, into analogue form and subtracted from the input voltage to give a difference voltage which is then digitized 14 to give a two digit " fine " number D6, D7 which is added to the previous coarse representation to produce a final accurate digitization which is displayed 5. The circuit is arranged so that the bottom coarse digit is of the same denominational significance as the top fine digit and the addition is effected by converting the decimal digits into analogue form, adding, and then converting back to digital form. Thus the top fine digit D6 and the bottom coarse digit D2 are converted to analogue form 8, 9, added 10, and digitized 11. Any " carry " D5 from digitizer 11 is converted 12 into analogue form E3 and added to the analogue form E2 of the top coarse digit D1, and the sum E4 is digitized D3. The digitizer, Fig. 2 (not shown), comprises two groups of four 100, 101, 102, 103 interconnected threshold devices, one group for each decimal denomination. Each threshold device produces an output when its input is positive and at the same time applies an appropriately valued negative voltage to each of the other threshold devices.
Patent GB-123744-A (GB)
Title: Improvements in Means for Securing Railway Chairs to Metal Sleepers.
IPC: E01B9/24
Filed: 1919-02-18
Abstract: 123,744. Soc. Anon. d'OugrÚe-Marihaye. May 19, 1916, [Convention date]. Chairs, securing to sleepers.-Sleepers have ribs c, Fig. 4, one of which is engaged by a claw g on the chair f which is secured by a metal key i driven between the other rib c and a claw g on the chair. Lateral displacement of the chair is prevented by projections h, h<1>, Fig. 3, on the chair engaging recesses in the ribs c under the rails.
Patent GB-265995-A (GB)
Title: Improvements in and relating to regulator systems for dynamo electric machines
IPC: H02P5/50
Filed: 1927-02-12
Abstract: 265,995. British Thomson-Houston Co., Ltd., (Assignees of Rogers, H. W., and Horstkotte, E. H.). Feb. 13, 1926, [Convention date]. Regulation. autornatic.-A motor 11 driving a load 10, such as a unit of a paper making machine is maintained at constant speed by regulation of the strength of the field 12. The motor drives, through cone pulleys and belt 33, an armature 28 excited with direct current through slip rings 30, the co-operating rotatable field structure 31 being excited from an alternating current source 14. When the motor runs at the desired speed, the structure remains stationary. If the speed of the motor decreases, the structure 31 turns clockwise, and thereby moves a brush 20 clockwise over contacts connected to a fine resistance 15, thereby inserting more sections of this resistance in the circuit of the field 12. If this alteration of the resistance is insufficient, the brush 20 engages an arm 24 of a spider 23, 24, 25 and moves a brush 22 to insert more sections of a coarse resistance 16. Reverse action occurs when the speed of the motor increases above normal. Indicating lamps 34, 35, 36 show whether the brush is in its extreme or mean positions. Any number of motors 11 can be run at related speeds by supplying the corresponding structures 31 from a common alternating current supply.
Patent GB-923168-A (GB)
Title: Shock-absorbing bearing for the movable element of a small mechanism
IPC: G04B31/02
Filed: 1962-02-02
Abstract: 923,168. Bearings. PARECHOC S.A. Feb. 2, 1962 [Nov. 30, 1961], No. 4086/62. Addition to 878,439. Class 12 (1). A shock-absorbing bearing as described in the parent Specification, in which the ring 6 is replaced by a casing 9a having an extension 9 which supports the easing 2 by engaging the flange 2b thereof.
Patent GB-607643-A (GB)
Title: Domestic cookers
IPC: F24C3/02
Filed: 1946-02-09
Abstract: 607,643. Cooking-stoves. McDONALD. J., and G.W.B. ELECTRIC FURNACES. Ltd. Feb. 9, 1946, No. 4089. [Classes 39(iii) and 126] A pivoted and heat insulating hot plate cover for solid fuel cookers incorporates a heating element 19 energized by gas, electricity &c. Electrical heating elements 19 are secured to the surface of the cover by means of an electrical plug and socket 20 whilst a mercury switch 21 in the cover ensures that the electrical circuit is broken when the cover is raised. For other types of heating elements a cock controlling the supply of gas &c., is closed upon raising the cover whilst a spindle is provided for re-opening the cock, when desired, after the cover has been returned to its normal position. The cover has a hollow extension 9 pivoted to a fixed hollow bracket 1 in a manner providing a protected passage for the supply leads to the heating element. A coiled spring 6 counterbalances the weight of the hinged cover.
Patent GB-617081-A (GB)
Title: Improvements in and relating to electrical resistance heating elements
IPC: F24C7/06
Filed: 1946-02-09
Abstract: 617,081. Electric radiators ; reflector stoves; reflectors. FERGUSON RADIO CORPORATION, Ltd., and GHOSE, S. C. Feb. 9, 1946, Nos. 4096, 4357, 6171, and 18764. [Classes 39 (iii), 75 (ii) and 126] An electric fire adapted to radiate a beam subtending a wide angle at the apparatus in the horizontal plane containing an elongated heating element 10, and subtending narrow angles in planes at right angles to this plane, comprises a main parabolic reflector 13 and an auxiliary reflector 14 which is at least in part of a section derived by halving an arc symmetrical with respect to the plane of projection of the beam and separating the halves above and below the plane of projection. The gap between the two halves may be filled in. In one embodiment, the main reflector 13 is convex viewed in plan from the front, and the heater 10 is curved in a horizontal plane to lie along the locus of the foci of the parabolic reflector. The auxiliary reflector 14, is of a section comprising parts of two parabolas and it is curved to enclose partially the heater 10. In a second embodiment the main reflector is similar to that previously described, except that it is " stepped," that is, is formed of parts of parabolas of increasing focal length, but having a common focus. In this case the heater 10 is straight, but the section of the auxiliary reflector comprises an ellipse, the eccentricity of which varies from zero at the middle of the length of the reflector, to a maximum at each end, the heater lying along the locus of the foci of the ellipses, which form an image of it along the curved locus formed by the foci of the parabolic main reflector. The front portion of the auxiliary reflector is of a section formed by two intersecting circular arcs. In both embodiments the heating element comprises two wires wound on a core of insulating material, the first Provisional Specification stating that separate threads are cut or moulded in the core for this purpose. The heating element may be replaced by a source of light, e.g. an elongated fluorescent tube.
Patent GB-272265-A (GB)
Title: Improvements in and relating to compressors for use in compressing refrigerant media
IPC: F04B39/10
Filed: 1926-11-15
Abstract: 272,265. Bailey, A. S. Nov. 15, 1926. Valves, arrangement of.-In a compressor for refrigerant media the detachable cylinder head 3 carries the inlet and delivery valves 6, 7, which are mounted in parted sleeves 8 held down by caps 9 and a yoke 10.
Patent GB-164797-A (GB)
Title: Improvements in apparatus for cleaning horticultural pots and the like
IPC: B08B9/36
Filed: 1920-02-11
Abstract: 164,797. Janes, E. R., and Adams, C. H. Feb. 11, 1920. Brushes, hand-supported, driving by hand or power. -An apparatus for cleaning horticultural pots comprises a frame 6 supporting a spindle 8 carrying a bevelled fly-wheel 9 which engages with a bevelled wheel 11 carried by a spindle 12 connected to one end of a flexible shaft 1, the other end being detachably connected to a brush 5. The brush is rotated by means comprising a foot-lever 15 supported at one end on a bearing 14, and connected to the fly-wheel by a link 16. A spring 13 presses the wheel 11 into frictional engagement with the fly - wheel. A number of bevel-wheels, each connected to a flexible shaft, may be arranged around the flywheel, whereby several brushes may be rotated simultaneously. According to the Provisional Specification, a tooth, belt, or chain drive may be employed instead of a friction drive and the apparatus may be operated by an electric moto:- or a small gas or petrol engine. It is also stated therein that a hollow perforated brush and a hollow flexible shaft connected to a source of water may be employed. Reference has been directed by the Comptroller to Specification 222/76.
Patent GB-526413-A (GB)
Title: Improvements in or relating to electrical condensers assembly
IPC: H01G4/38
Filed: 1939-02-09
Abstract: 526,413. Condensers. SPORING, P. A., and TELEGRAPH CONDENSER CO., Ltd. Feb. 9, 1939, No. 4285. [Class 37] A rolled condenser unit 1 is supported in an assembly by wedging the end of the tubular core 2 on a tapering tongue 6 on a metal strip 5, the other end being held in an insulating bar 8, for example in a hole therein. Preferably the units have one electrode projecting from the dielectric at the end nearest the metal strip 5, to assist cooling, while connecting lugs 4 extend from the roll at the other end for connection with bus bars supported on the insulating bars 8. The assembly may then be immersed in oil &c. in a container.
Patent GB-495561-A (GB)
Title: Improvements in or relating to telegraph systems
IPC: H04L12/00
Filed: 1937-02-12
Abstract: 495,561. Telegraph exchange systems. LORENZ AKT.-GES., C. Feb. 12, 1937, No. 4305. Convention date, Feb. 14, 1936. [Class 40 (iii)] In a telegraph exchange, partial release may occur as a result, for instance, of the blowing of a fuse in a c circuit, of the accidental release of a relay, or of the release at one end only of a junction line between two exchanges. As a result, subsequent message signals may act as selector impulses and cause a new and wrong connection to be effected. To prevent this, the invention provides relays such as Q, Y, which delay the establishment of a fresh connection until the partial release has been converted into a total release ; this action takes place however short may be the release signal produced by the partial release. In a preselector, Fig. 3, in the system shown, all the relays shown are energized when a connection has been established, and the wipers a, b, c are on their contacts in the preselector of the calling station but not in that of the called station. In the corresponding group selector, Fig. 4, the relays C1, P, Y remain energized during a connection, and lines a, b, c are switched through, while the corresponding repeater, Fig. 5 (not shown), conforms. If now, for example, the slow-release relay R, Fig. 3, is accidentally released, relay T releases also and sets on foot the release of the connection. Relay Q holds on, however, so that if message signals should arrive before the releasing process has been completed, the test relay T and stepping magnet D are cut off at q1, q2, q3, whereby the setting up of a fresh connection is prevented. Relay Q holds on until both relays Rand N have finally released. Similarly in the group selector, Fig. 4, relay Y remains energized until release has been completed, and by its contacts y1, y2, y3 prevents the test relay P and lifting magnet H<1> from effecting a new connection. In the repeater a similar result is effected by a pair of slow-release relays V, V, Fig. 5 (not shown).
Patent GB-1537723-A (GB)
Title: Rotatable drum drive
IPC: B22D45/00
Filed: 1977-02-03
Abstract: The device has a horizontally arranged, rotationally drivable drum (1). The drum (1) is supported at one end by an endless chain (6) which runs along the drum circumference and around at least one driven drive element (9). The drum is supported by an endless chain (7) at the other end also. This chain runs along the drum circumference and via at least one roller or a chain wheel (16). This roller or this chain wheel does not necessarily have to be driven. The driven chain (6) engages on a toothless part (8) of the drum circumference. As a result of the omission of teeth on the drum circumference, a more economical manufacture of such a device can be achieved. <IMAGE>
Patent GB-211883-A (GB)
Title: Recovery of metals from their compounds
IPC: C22B5/00
Filed: 1924-02-26
Abstract: Relates to the treatment of ores, smelter products and the like, particularly sulphides, selenides, tellurides, arsenides, antimonides, sulpho-salts, matte, speiss, &c., and comprises generally their reduction with a metal or other element having sufficient affinity for sulphur &c., and the simultaneous or subsequent electrolytic or other decomposition of the sulphide &c. resulting from the reduction.  Sulphides may be reduced by silicon. Impure aluminium obtained from bauxite, clay, &c. may be used for reducing pyrites or other iron sulphide, the reaction being exothermic.  The silicon in the impure aluminium may result in the production of some sulphide of silicon.ALSO:Relates to the treatment of ores, smelter products and the like, particularly sulphides, selenides, tellurides, arsenides, antimonides, sulpho-salts, matte, speiss, &c., and comprises generally their reduction with a metal or other element having sufficient affinity for sulphur &c., and the simultaneous or subsequent electrolytic or other decomposition of the sulphide &c. resulting from the reduction.  Zinc blende may be reduced by impure aluminium, and the zinc removed by distillation, pure aluminium sulphide being obtained at the same time.  Sulphides may be reduced by silicon or titanium; if titanium ores are used there may be obtained a pure titanium sulphide, from which pure titanium oxide may be prepared.  The titanium in the impure aluminium may result in the production of some sulphide of titanium.  Pure aluminium sulphide may be obtained by using aluminium in excess; or if iron sulphide is used in excess the product may be purified by aluminium after tapping off the ferro silicon.