baber/WOPTO huggingface dataset:
Patent GB-1537221-A (GB)
Title: Centrifugal pumps
IPC: F04D1/06
Filed: 1977-02-25
Abstract: 1537221 Self-priming centrifugal pumps LE MATERIEL TELEPHONIQUE 25 Feb 1977 [27 Feb 1976] 08186/77 Heading F1C A self-priming centrifugal pump comprises chambers 20, 21, 22, 23, each housing a stage of the pump, the chambers being stacked together as shown, together with a top part 1 containing the inlet 11 and the outlet 12 and a base part 3, all held together by tie bolts 35, 35'. Peripheral openings 25 in the chambers are aligned to form an inlet duct leading from the inlet 11 to the eye of the first-stage impeller 201 via a central opening 204 in a plate 200. Peripheral opening 25' in the chambers are aligned to form a recirculation duct through which, during priming, fluid is returned from the discharge chamber 17 to the eye of the first-stye impeller 201 via the space above the plate 200, the castellated edge of the central opening 204 making an acute angle with the plane of the plate so as to direct the fluid towards the eye. On completion of priming, the discharge pressure closes a valve 231 to stop the recirculation.
Patent GB-181494-A (GB)
Title: Improvements in or relating to automatic couplings and safety indicators therefor for railway vehicles and the like
IPC: B61G1/08
Filed: 1921-03-16
Abstract: 181,494. Boonzaier, W. G. March 16, 1921. Addition to 147,963. Couplings, automatic; couplings, application of indicators to.-In the automatic coupling described in the parent Specification the carrier rod is made in one piece and carries handles at each end on one of which is mounted' a counterbalance weight; behind the carrier rod is a transverse rod mounted in bearings the ends of the rod having pawls which engage with the handles on the carrier rod when the coupling is in its set position. The carrier rod 15 is in one piece and has tha link-raising arms 65 mounted on it; at the ends of the rod 15 an arm 80 projects rearwardly and engages in the set position of the coupling with a hand-operated pawl 81 mounted on a shaft 82. An extension 79 of the handle 80 may be used for setting the coupling. A sliding weight 84 is mounted on one arm 80 to counterbalance and check the coupling-link 1 and safety indicator signal (not shown).
Patent GB-411997-A (GB)
Title: Improvements in or relating to junction pieces for pipe lines and method of making same
IPC: B21C37/29
Filed: 1933-03-17
Abstract: 411,997. Pipe junctions. SCHLEIMER, O. J., 59, Wilhelmstrasse, Remscheid, Germany. March 17, 1933, Nos. 8222, 8223, and 8224. Convention dates, March 17, 1932,May 21,1932, and Dec. 1, 1932. [Class 99 (i).] An iron or steel pipe junction in the form of a T- or cross-piece and adapted to be butt - welded to the pipes z to be jointed, is provided with straight jointing ends, which may be bevelled, Fig. 1, or with sockets, Fig. 4, each of a length x equal to about 2-3 times the thickness y of the wall of the junction, that is, a length just sufficient for the proper guiding of the welding burner. The Specification describes also methods of and apparatus for making such junctions. In the case of the T-piece, a rectangular blank a of uniform thickness and with a punched elongated hole b is provided, Fig. 6, and is operated upon by dies simultaneously to expand the edge of the hole b to form a socket c and to bend the blank into U-shape, Fig. 8, after which the two ends a<2> of the latter are bent to cylindrical shape and the edges thereof jointed by welding. Cross-pieces are made from a pair of blanks, Fig. 15, which are bent into semi-cylindrical shape and welded together along their longitudinal edges m, Fig. 14, a socket c being formed in each, simultaneously with the former operation.
Patent GB-1492041-A (GB)
Title: Catalysts and treatment of ic engine exhaust gases
IPC: B01J37/34
Filed: 1974-02-22
Abstract: 1492041 Catalyst composition; I.C. engine exhaust gas treatment UNITED KINGDOM ATOMIC ENERGY AUTHORITY 13 Feb 1975 [22 Feb 1974 13 May 1974] 8303/74 and 20988/74 Headings B1E and B1F A catalyst, e.g. for I.C. engine exhaust gastreatment comprises a particulate material having a sputtered coating of catalytic material, the coated particles being in association with a refractory material such that the refractory material and the coated particles are adhered together. The catalytic material may be one or more platinum group metals, suitably deposited as an unagglomerated atomic dispersion by the sputtering. The particulate material may be alumina, silica, lime, magnesia, carbon, spinels or hydraulic cement. The refractory material may be in the form of a sheet, e.g. of a surface oxidised iron-chromium-aluminium-yttrium alloy which may be flat or corrugated, granules, e.g. of alumina, or silicon carbide, a honeycomb structure, a mesh or a fibrous structure, e.g. of kaolin fibres, which acts as a carrier for the coated particles applied thereto. Alternatively, powdered refractory material, e.g. gammaalumina may be applied as a partial coating to the sputter-coated particles and used to adhere the particles together. The Examples relate to platinum-coated, alpha-alumina spheres which are (i) deposited on a surface oxidised ferritic alloy sheet, (ii) deposited on kaolin fibre wool, and (iii) bound together by powdered alumina. The catalyst may be used in a reactor for I.C. engine exhaust gas oxidation with added oxygen.
Patent GB-680151-A (GB)
Title: Sound-transducing devices
IPC: H04R17/00
Filed: 1950-04-03
Abstract: 680,151. Instruments for deaf persons. SONOTONE CORPORATION. April 3, 1950 [April 9, 1949], No. 8354/50. Class 40 (iv). A microphone for use in a deaf-aid instrument comprises a diaphragm 11 with a perforation 24 to equalize the pressures on the two sides of the diaphragm, the diaphragm actuating a crystal transducer 21 enclosed between a rigid wall 18 and a limp diaphragm 31 impervious to moisture. The crystal is actuated from an eccentric portion 17 of the diaphragm 11 which is protected from dust by a gauze 75 over a grille 42. The peripheries of the diaphragms and the wall 18 are clamped together by the crimping of the flange of the grille 42. The electrical leads are passed through the walls of the casing by tags 53, 59, the openings being hermetically sealed. The microphone casing 10 is insulated from shock by a sheet of rubber 73, strips of sponge rubber 71, 72 and a length of rubber tubing strung round supporting lugs 65 in the amplifier casing.
Patent GB-341337-A (GB)
Title: Improvements in rotary pumps of the fixed abutment type
IPC: F04C13/00
Filed: 1930-03-15
Abstract: 341,337. Rotary pumps. HALL, S. Z., 76, Victoria Street, London. March 15, 1930, No. 8405. [Class 110 (ii).] Fixed - abutment type.-A knife or shear blade c is fitted to a casing b of a rotary pump and co-operates with specially hardened outwardlysliding vanes n to shear through any foreign substance which may enter the casing through the suction port s. The blades have trunnions f pivoted to blocks e which slide in grooves d in the casing walls. The cutting edge h of each vane lies on a straight line drawn from the rotor centre o through the trunnion axis f, in the cutting position. The casing around the delivery port D is cut away at g to prevent jamming of solid materials between the vanes and the casing.
Patent GB-721269-A (GB)
Title: Floor cleaning apparatus
IPC: A47L13/12
Filed: 1953-03-27
Abstract: 721,269. Self-wringing mops. BLUM, J. March 27, 1953 [Feb. 27, 1953], No. 8496/53. Class 19 In a self-wringing mop comprising a sponge rubber pad 4 secured in a U-shaped holder 6 and arranged for squeezing between rollers 7, the holder 6 is carried by rods 9 passing through slots 10 in the support 3. The rods 9 are pivoted on a two-armed lever 11 itself pivoted on the handle 1. The lower part of the handle 1 is curved in order that wear on the pad 4 may be even, while an alternative pivot hole 12 is provided for the lever 11, so that the position of pad 4 relative to the rollers 7 may be changed after wear.
Patent GB-355304-A (GB)
Title: Electric hand lamp for motor vehicles
IPC: B60Q3/02
Filed: 1930-03-17
Abstract: 355,304. Two-part couplings. SCHOELLER, A., 117, M÷rfelderlandstrasse, Frankfort-on-Main, Germany. March 17, 1930, No. 8526. [Class 38 (i).] A fitting is provided to attach an inspection lamp to a fixture provided on a motor car for a cigar lighter of known type. Provision is made on the fitting for closing the circuit to avoid the necessitv for the manual pressure required by the lighter. In one form a plate 8, Fig. 3, fits into the stirrup 5a of the fixture 5 and carries a contact 6 that engages a contact 7, the circuit being retained closed by a screw 10 that depresses the button 9 and closes the contacts 9a. In another form contacts 14, 15 on the fitting engage contacts 13, 16 on the fixture, one of each pair being resilient.
Patent GB-760148-A (GB)
Title: Improvements relating to the treatment of animal hair, used in the manufacture of upholstering materials
Inventor: HOGG WILFRID HENRY
IPC: D04H1/58
Filed: 1954-03-24
Abstract: Non-felting animal hair, e.g. hog's hair or horse hair, which may be degreased, is treated with a solution of a polymerization catalyst, such as ammonium persulphate, and then brought into contact with a solution or emulsion of a monomeric vinyl compound or exposed to the pure or diluted monomer vapour.  Vinyl compounds that may be used include methyl methacrylate, methyl acrylate, acrylamide, methyl vinyl ketone and styrene.  The polymerization is desirably carried out at 80-100 DEG  C. and the uptake of polymer may beup to 60 per cent by weight of the hair.  The stiffened product may be bonded with ruband made up to an upholstery material in known manner. Specifications 706,413, 730,954 and 734,594, [all in Group VIII], are referred to.ALSO:A method of increasing the stiffness of non-felting animal hair, particularly hog's hair or horse hair, to render it suitable for use as an upholstery material, comprises polymerizing a vinyl compound within the individual hairs.  After degreasing, the hair is preferably treated with a solution of a polymerization catalyst, such as ammonium persulphate, and is then brought into contact with a solution or emulsion of the monomer or exposed to the pure or diluted monomer vapour.  Vinyl compounds that may be used include methyl methacrylate, methyl acrylate, acrylamide, methyl vinyl ketone and styrene.  The polymerization is desirably carried out at 80-100 DEG C. and the uptake of polymer may be up to 60 per cent by weight of the hair.  The stiffened product may be bonded with rubber and made up to an upholstery material in known manner. Specifications 706,413, 730,954 and 734,594 [all in Group VIII] are referred to.
Patent GB-493498-A (GB)
Title: Improvements in appliances for forcing bearing members upon shafts or axles and/or for removing the same therefrom
IPC: B25B27/073
Filed: 1938-03-21
Abstract: 493,498. Assembling force fits. BRITISH TIMKEN, Ltd., and HILL, A. W. March 21, 1938, No. 8562. [Class 83 (iv)] A device for fitting or withdrawing a bearing member to or from a shaft comprises a fluid pressure jack having piston and cylinder members and a jacksupporting member adapted to be attached to the end of the shaft to support the jack coaxially therewith. As applied to the forcing of a tapered roller bearing bush 1 on a railway vehicle axle 2, a central rod 8 is attached to the axle by means of a divided ring 15 secured to an annular groove 14 in the axle by a pin 16, and having an external screwthread receiving a sleeve 12 screwed at 11 to the rod. The jack cylinder, which is slidably mounted on the rod, consists of concentric sleeves 4, 5 and the annular piston 7 is slidable therein. A nut 10 on a screwed portion 9 of the rod 8 forms an abutment for the cylinder and the piston engages the bearing 1 through a sleeve 17 to force it on the axle. The axle box 3 is previously placed on the axle, and the bearing is guided by the sleeve 12. For withdrawing the bearing, the nut 10 and sleeve 17 are removed, a washer 19<1> is placed between the cylinder and the sleeve 12, and lugs 18 on the cylinder are connected by links 19 to a divided ring 21 which engages the oil retaining rings 23 of the axle box 3. When fluid is admitted to the cylinder, the piston abuts on the washer 191 and the cylinder slides on the rod 8 to withdraw the ring 21, axle box 3 and bearing 1. In a modified attachment, the sleeve 12 screws on or in a threaded part of the axle, and the sleeve may be formed integral with the rod 8. The bearing 1 may fit on a taper on the axle.
Patent GB-798132-A (GB)
Title: Orthoscopic wide angle objective
IPC: G02B13/04
Filed: 1956-03-20
Abstract: 798,132. Optical objectives. SOC. D'OPTIQUE ET DE MECANIQUE DE HAUTE PRECISION. March 20, 1956 [April 13, 1955], No. 8633/56. Class 97(1) An orthoscopic wide angle objective consists of two simple divergent lenses disposed one on each side of a pair of convergent groups of lenses each of which groups comprises at least three lenses and being disposed one on each side of a diaphragm. Numerical data are given for one example of the objective shown.
Patent GB-390634-A (GB)
Title: Improved process of and apparatus for the concentration of sulphuric acid to a high density
IPC: C01B17/88
Filed: 1932-03-23
Abstract: <PICT:0390634/III/1> Sulphuric acid is concentrated progressively in a series of stages under high vacuum by gradual and regulable indirect heating effected by circulating a heated fluid in a closed path round or through the acid in the various stages, the vapour released from each stage being passed into weaker acid than that from which it is emitted.  Dilute acid from a supply tank 1 passes by gravity through a series of vessels 2, 4, 6 heated by pipes 9, 10, 11, forming with a heater 7 a closed circuit through which oil is circulated by a pump 12.  The vapours from the vessel 6 pass into the vessel 4 where they are forced into contact with the liquid by a baffle 4<1>, while the vapours from the vessel 4 similarly pass into the vessel 2, the vapours from which pass to an alkali vessel 13 and a condenser 14, maintained under vacuum by a pump 15.
Patent GB-494397-A (GB)
Title: Improvements in hand-operated pumps
IPC: A62C11/00
Filed: 1938-03-21
Abstract: The piston of a fire-extinguisher may be made of synthetic resin.
Patent GB-739482-A (GB)
Title: Purifying and concentrating nitric acid by distillation
IPC: C01B21/46
Filed: 1951-04-13
Abstract: <PICT:0739482/III/1> Nitric acid containing more than 68 per cent HNO3 and also containing nitrogen peroxide, is concentrated and purified by introducing the liquid into the side of a fractionating column and taking-off overhead vapours containing HNO3 and N2O4 while withdrawing approximately 68 per cent nitric acid at a temperature of 120 DEG  to 125 DEG  C. from the base of the column; the vapours are introduced into the side of a second fractionating column from which N2O4 vapours are taken-off overhead while pure anhydrous nitric acid at a temperature of 86 DEG  to 90 DEG  C. is withdrawn from the base. Nitric acid containing about 80 per cent HNO3 is introduced through pipe 2 into column 1, the base of which is maintained at 120 DEG  to 125 DEG  C. by boiler 3.  Dilute nitric acid (68 to 70 per cent) is withdrawn from the base of column 1 through pipe 4.  Vapours containing HNO3 and N2O4 are withdrawn from the head of column 1, and are introduced through pipe 5 into column 6, the base of which is maintained at 86 DEG  to 90 DEG  C. by boiler 7.  The head of column 6 is maintained at 15 DEG  to 18 DEG  C., and nitrogen peroxide vapours are taken overhead, and condensed.  Part of the condensate is returned through pipe 14 to act as reflux in column 6, and the remainder is withdrawn from the system through pipe 15. Pure nitric acid is obtained at the base of column 6.  Part of the pure acid is passed through pipe 9 to act as reflux in column 1; and the remainder is withdrawn from the system through pipe 10. If desired, a small stream of hot air or oxygen may be introduced into the base of column 6 in order to ensure that a perfectly colourless product is obtained. In another embodiment, the bulk of the nitrogen peroxide is eliminated in a preliminary distillation column, the base of which is maintained at 90 DEG  to 100 DEG  C, and the partially purified acid is then submitted to the process described above.
Patent GB-310158-A (GB)
Title: Improvements in and relating to show or display cards for advertising and like purposes
IPC: G09F1/06
Filed: 1928-03-22
Abstract: 310,158. Fletcher & Son, Ltd., and Oliver, H. B. March 22, 1928. Showcards.-Collapsable showcards of the kind having a. front shelf for displaying articles and a supporting strut, have a front portion and a back portion sliding in grooves in the front portion and having a central tongue adapted to be creased and inserted through a central opening in the front card to form a shelf or shelves. As shown in Figs. 1 and 2 and in inverted form in Fig. 3, the front portion 13 of the card has a central cut-away part 16 and rear flanges 15 which form grooves for the edges of the back portion 14. The back portion has a tongue 19 which is inserted through the opening 16 and is creased and bent to form shelves 17, 18, the shelf 18 being supported by a bent strip 21. The tongue 19 is supported by a second tongue 22 cut out of the front card and having secured to it a strip 23 carrying side wings 24 forming a strut. Only one shelf may be provided and the parts may be arranged so that the back portion and strut are straight instead of being bent.
Patent GB-557737-A (GB)
Title: Improvements in and relating to manifold recording appliances
IPC: B41L1/00
Filed: 1942-06-27
Abstract: 557,737. Index cards. REID. D. H. June 27, 1942, No. 8880. [Class 146 (i)] . An index card, which is adapted for duplication of the matter written thereon, consists of a sheet of stiff card having one or more large openings therein, so as to form a frame, over which a thin sheet of paper is secured. Entries made on the thin paper are duplicated on to a listing-sheet below by means of a carbon sheet or a carbon backing on the index-card.
Patent GB-1132761-A (GB)
Title: Improvements relating to devices for flattening seamless thermoplastic flexible tubular films and forming parts of apparatuses for making such films
IPC: B29C48/10
Filed: 1966-03-01
Abstract: 1,132,761. Apparatus for making tubular films. BARMAG BARMER MASCHINENFABBIK A.G. 1 March, 1966 [1 March, 1965], No. 8957/66. Heading B5B. A device for flattening and cooling a tubular film before it enters the nip of a pair of nip rolls of an apparatus for making tubular films by the "captive bubble" process comprises two main guide plates converging towards the nip and being double-walled to receive a coolant and at least two additional adjustable triangular or trapezoidal guide and cooling plates one on each side of the gap between the main guide plates. The additional plates are adapted to be pivoted or moved bodily into the operative position so that they contact the portion of the tubular film not contacted by the main guide plates and to this end diverge in a direction towards the nip. They are double-walled to receive a coolant. All the guide plates may comprise parallel longitudinal cells extending from one side of the plate to the other side in a direction transverse to that of the travel of the film, the cells alternating with and being connected laterally by single-walled webs, the ends of the separate cells communicating with one another in such a manner as to constitute a continuous sinous path for a coolant. Each of the cells may have the cross-section of a flattened honeycomb cell.
Patent GB-346955-A (GB)
Title: Improvements in the manufacture of fabric bags
IPC: B31B23/00
Filed: 1930-03-21
Abstract: 346,955. Making fabric bags. CAMERON, A. M., 59, Elliot Street, Glasgow. March 21, 1930, No. 9044. [Class 94 (ii).] In making fabric bags, a strip of textile fabric, of a width corresponding to the breadth of the bag to be made, is drawn from a roll &c. and has strong adhesive applied continuously to both side edges, then after it has been drawn some distance, it is folded back upon itself to form an open-mouthed bag. A wide strip may be cut longitudinally to form several bags simultaneously and adhesive be applied at intervals in lengths equal to the depth of the bag, the edges being folded inwards prior to receiving the continuous strips of adhesive. Fabric drawn from a roll 2 is severed longitudinally by rotary knives 3 so that two or more bags may be formed simultaneously. Each bag strip receives at equal intervals along its edges an application of gum, as shown in Fig. 5, by gumming discs 4 controlled by a cam 11 and the edges of the strip are folded inwards by curved plates 13 co-operating with a flat plate 14 and pressed by rolls 15. Rolls 16 feed the strip beneath a device for gumming continuously the edge thereof, as shown in Fig. 6, a cutter 19 which severs from the strip a bag length, and a folding blade 20 adapted to thrust the centre of the blank between rollers 22 which complete the fold and pass the completed bag on to a delivery conveyer 23. The bag may be printed before or after folding. Specification 1879/06, [Class 94, Packing &c.], is referred to.
Patent GB-1363008-A (GB)
Title: Device for controlling exposure time in a camera
IPC: G03B7/083
Filed: 1972-02-28
Abstract: 1363008 Shutter control circuits NIPPON KOGAKU KK 28 Feb 1972 [3 March 1971] 9049/72 Heading G2A A shutter control circuit comprises a battery 1 which charges a timing capacitor 6a through a photo-conductor 2 and which energizes a shutter operating circuit to control exposure time according to the capacitor voltage. Energization of the shutter operating circuit causes a voltage drop in battery 1 and to compensate for this, a compensating voltage is combined with the capacitor voltage. As shown, when the shutter release is pressed, a switch 7 is opened to disconnect capacitor 6a from photo-conductor 2, a switch 20 is closed to energize a shutter opening electromagnet 27 and a switch 22 is opened whereby a capacitor 21 is charged by the output of a differential amplifier circuit 15, 16 which receives an input from capacitor 6a proportional to the log of subject brightness and an input proportional to the log of aperture and film sensitivity as set by resistor 10. When charged, capacitor 21 triggers a circuit 24, 25, 26 to de-energize the electromagnet 27 and close the shutter. When the electromagnet 27 is energized, battery voltage drops and transistor 16 is supplied with this lowered voltage. To compensate for this, capacitor 6a is connected to a voltage divider 32a, 32b, to reduce the base voltage of transistor 15 when the battery voltage falls. Figs.3, 4 (not shown) depict alternative compensating circuits. Exposure time is indicated on a meter 30.
Patent GB-288270-A (GB)
Title: Distillation of tar
IPC: C10C1/04
Filed: 1928-03-26
Abstract: 288,270. Barrett Co., (Assignees of Miller, S. P.). April 6, 1927, [Convention date]. Condensing processes ; pitch and tar ; ascension pipes and hydraulic mains.-Tar is distilled by spraying it into contact with hot coal gases as they pass from the retorts to a collector main as described in Specification 284,703, and the resulting gases and vapours while still hot are purified from suspended particles by subjection to electrical discharges and finally cooled to condense the oil. Gases from a battery of coal retorts rise through an uptake pipe 6 to a main 7 where they are sprayed with tar through nozzles 14. The gases with entrained vapours pass through an electrical precipitator 17 comprising a number of tubes 18 containing metal rods 24<1> forming negative electrodes the tubes 18 being the positive electrodes. The gas freed from suspended particles pass to condensers of the usual " wet " type containing grids moistened by mmoniacal liquor. In a modification the gases are passed from the precipitator through an oil scrubber wherein they are enriched with light oils and freed from heavy oils. Alternatively, fractional condensation of the oils may be obtained in a " dew point column " comprising a casing divided into several compartments in which the gases are cooled by direct contact with oils of different characteristics. Specification 315,368 is referred to.