baber/WOPTO huggingface dataset:
Patent GB-721423-A (GB)
Title: Improved sharpening machine
Inventor: LINDAHL HENNING WALDEMAR
IPC: B24B3/54
Filed: 1952-11-11
Abstract: 721,423. Sharpening knives and scissors. AKTIEBOLAGET NILSSON & JOHANSSON. Nov. 11, 1952, No. 28357/52. Class 60 A machine for sharpening knives, scissors, &c. comprises a sheet-metal plate 1 provided with two pins 2, 3 for attaching the machine to a fitting on a vertical support, two studs 17, 18 on the plate serving for the pivotal mounting of two arms 15, 16 which have inter-engaging toothed segments 19, 20 at their pivoted ends and are urged towards each other by resilient means, bushings rotatably mounted in the free ends of the arms and movable in arcuate slots 22, 23 in the plate, grinding wheels 9, 10 and gear wheels 11, 12 secured on the bushings, and crank-operated gearing 25 for driving the gear wheels 11, 12 through further gearing 26, 27. The grinding wheels are disposed on the opposite side of the plate 1 from that of the gearing, and the arms 15, 16 are urged towards each other by a spring 21 engaging axial apertures in the journals for the bushings. The machine is enclosed by a casing consisting of two curved plates which are disposed on opposite sides of the plate 1, being secured together at one end by a bolt and at the other end by a flange 8 on the crank shaft 7 driving the gearing 25. The casing and plate 1 are provided with two slots 28, 29 for receiving respectively a knife blade and scissors blade to be sharpened. The machine is adapted to be secured to a fitting support of the kind described in Specification 661,239, [Group XVII], by the pins 2, 3 and a pivoted dog 4 on the plate 1.
Patent GB-378699-A (GB)
Title: Improvements in motion dampers and shock absorbers
IPC: F16F9/44
Filed: 1931-10-13
Abstract: 378,699. Hydraulic shock-absorbers. BROULHIET, G., 201, Rue de Grenelle, Paris. Oct. 13, 1931, No. 28396. Convention date, Oct. 24, 1930. [Class 108 (iii).] In hydraulic apparatus of the oscillating or of the cylinder and piston type, the compression chambers are connected by spring-controlled slide valves which uncover holes or slots in accordance with the pressure in the correspcnding compression chamber. In the construction shown in Fig. 2, a double ended piston 6 is reciprocated in a cylinder 1 by an operating arm 11 mounted on the spindle 12, an enlarged horizontal section through the piston being shown in Fig. 4. Two tubular valves 21, 22 regulate flow of liquid one from each compression chamber, the valves being controlled by helical springs 23, 24. Each valve is pierced by a number of graduated orifices which are uncovered in succession as the pressure in the compression chamber increases. In a modification shown applied to an oscillating absorber in Fig. 9, the compression chambers on the opposite side of the vane 30 are connected to one another through similar spring-controlled valves.
Patent GB-911985-A (GB)
Title: Apparatus for the degasification of liquids
Inventor: CARTWRIGHT DONALD ROY
IPC: C21C7/10
Filed: 1960-08-17
Abstract: 911,985. Degassing molten metal. CONSETT IRON CO. Ltd. Aug. 16, 1961 [Aug. 17, 1960], No. 28477/60. Class 72. Apparatus for the continuous degasification of molten metal and other liquid comprises a first well connected to a liquid input, a second well connected to a liquid output, a vacuum chamber adapted to be fed from the first well and to discharge to the second well, and a weir separating the two wells. As shown, a tundish 1 having a refractory floor 4 sloping downwardly towards a stoppered outlet 5, is provided with a weir 6 separating an input well 9 from an output well 8. A refractory lined vacuum chamber 2 has two dependent tubes 13, 14 with refractory sleeves 21 dipping into the wells 9 and 8 respectively. Liquid, e.g. molten steel, supplied to the tundish flows into the well 9 through the vacuum chamber 2 to the well 8. In the event of vacuum failure the liquid may flow over the weir 6.
Patent GB-1077234-A (GB)
Title: Improvements in or relating to electrical connectors
Inventor: PAULL EDITH ROSINA
IPC: H01R12/72
Filed: 1964-07-10
Abstract: 1,077,234. Two-part couplings. BELLING & LEE Ltd. July 10, 1964, No. 28503/64. Heading H2E. An electrical connector has at least one contact comprising a wire bent back upon itself to form two limbs (1 and) 2 (Fig. 1, not shown), mounted within a cavity 24 in an insulating channelled block 15 so that one limb projects into the channel 14 for bearing on a planar member, e.g. a printed circuit board 22, inserted in the channel, and a free end 6 of this limb is arranged to engage with a shoulder 26 formed by a surface of the cavity adjacent a slot 25 in the channelled block 15 through which part of the limb projects from the cavity into the channel. The other limb 2 is rigidly secured in a socket of a support member to which electrical leads are wrapped round or soldered. A plurality of such contacts are arranged in two parallel rows on either side of the printed circuit board (Fig. 7, not shown). The electrical contacts can be of beryllium copper, phosphor bronze or brass wire and other forms and shaped free ends 6 are described (Figs. 1-6, 9 and 10, not shown).
Patent GB-1164186-A (GB)
Title: Process for the Polymerization of Beta-Lactones
Inventor: DEURSEN JOSEPHUS HUBERTUS VAN
IPC: C08G63/08
Filed: 1967-06-21
Abstract: 1,164,186. Polymerizing beta-lactones. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 21 June, 1967 [23 June, 1966], No. 28671/67. Heading C3R. Polyesters are made by polymerizing a betalactone (especially an alpha, alpha-dialkyl-betapropiolactone) in the presence of an anionic initiator and at least one chain-transit agent selected from (a) carboxylic acids and their anhydrides and acid halides, (b) phenols and thiophenols, (c) mercaptans and (d) enolizable compounds. Specified initiators are trimethylamine, triethylenediamine, tetraphenylphosphonium bromide, triphenylbutylphosphonium bromide, triphenylphosphine and betaines. Specified initiators are: (a) formic, acetic, propionic, beta-chloropropionic, isobutyric, pivalic, cinnamic, benzoic, alpha-naphthoic and adipic acids and certain of their anhydrides and acid chlorides; (b) phenol, p-cresol, alpha-naphthol, hydroquinone, thiophenol and m-tolyl mercaptan; (c) ethyl mercaptan, n-butyl mercaptan and n-nonyl mercaptan; (d) acetyl acetone and acetylacetio esters. Polymerization is effected at 0 to 350 C. in the presence or absence of a diluent. Examples describe the polymerization of pivalolactone.
Patent GB-957448-A (GB)
Title: Waveguide hybrid junctions
IPC: H03D9/06
Filed: 1961-08-09
Abstract: 957,448. Impedance matching. VARIAN ASSOCIATES. Aug. 9, 1961 [Aug. 18, 1960], No. 28793/61. Heading H1W. [Also in Division H3] In the hybrid waveguide structure of Specification 956,728, the cavity supporting the orthogonal modes is matched to the waveguide carrying the perturbed mode. As shown, a squaresection cavity 1 is coupled to a pair 1, 2 of rectangular waveguides carrying, e.g. signal and local oscillator waves polarized at right-angles to each other. The horizontally polarized wave is perturbed by a post 6 in such a manner that, in the upper half of the cavity, the two modes have out-ofphase components and, in the lower half, inphase components. Two crystal rectifiers 4, 5 forming a balanced detector are located each in one half of the cavity, an I.F. output being derived via the post 6 which is connected to a common terminal of the crystals. The detector structure 4, 5 is located near the end of waveguide 2 whereby it is matched to this waveguide. It is matched to the other waveguide by means of a conductive plate 20 attached to the side of the cavity and a probe 21 attached to the detector structure. The probe 21 extends into the waveguide 2 to form a resonant coaxial cavity 2<SP>1</SP>. The matching structure lies in a plane at right-angles to the plane of polarization of the waves fed by waveguide 2 and has no effect on these waves. In a modification, matching is effected by means of an adjustable screw-threaded probe aligned with and opposite the post 6 (Fig. 4, not shown).
Patent GB-727578-A (GB)
Title: Improvements in or relating to plastic materials
IPC: C08C19/02
Filed: 1951-12-10
Abstract: An emulsion produced by the emulsion polymerization of aliphatic conjugated diolefins or their copolymers is mixed with a solvent for the elastomer, an emulsion breaking salt added, the emulsion broken, the resulting elastomer dissolving in the solvent, a hydrogenation catalyst is added and the elastomer hydrogenated and recovered. Specified diene polymers and copolymers are polybutadiene, polypentadiene, polymethylpentadiene and the copolymers butadiene-styrene, butadiene-isoprene, butadiene-methylacrylate, butadieneethyl acrylate and isoprene-styrene, while specified solvents are methylcyclohexane, cyclohexane, benzene, toluene, isooctanes, isoheptanes, n-heptanes and dioxane.  Mixtures of solvents may be used.  Emulsion breaking salts specified are barium, calcium and sodium chloride, water-soluble sulphates, nitrates and metal salts of lower molecular weight fatty acids.  The synthetic rubber-solvent phase is preferably dehydrated, e.g. with bauxite and alumina, before the addition of the hydroquatin catalyst which may be nickel-kieselguhr, Raney nickel, copper chromite, molybdenum sulphide, platinum oxide, copper chromium oxide and finely-divided platinum and palladium in amount from 2 to 20 weight per cent of the elastomer.  Preferred hydrogenation temperatures are 200-300 DEG  F., preferably at pressures of 100 to 1000 p.s.i.g., for a period preferably of 2 to 7 hours.  Preferred solutions for hydrogenation are those containing about 50 grams of a 25 to 40 Mooney viscosity elastomer per litre of solvent.
Patent GB-462995-A (GB)
Title: Interlocking tunnel lining segments
IPC: E21D11/00
Filed: 1935-10-21
Abstract: 462,995. Tunnel linings. CLARK, J. P. Oct. 21, 1935, No. 28953. [Class 85] [Also in Group X] Segments A for lining tunnels are of stepped or Z shape with tongues B and grooves C for interlocking. Each ring of lining may be built up of segments as in Fig. 1, with the closing segment divided along its circumferential centre ; alternatively, segments as shown in Fig. 1 may be employed for one side of the ring and segments of reverse form for the other side, a segment as in Fig. 3 being used at the bottom of the ring and the top closed by a similar segment with reversed tongue and groove, if desired, divided circumferentially. Moulded &c. segments may be reinforced and one or more grout. holes, plain or threaded, may be formed through the segments or the junction thereof. Portions of the joints between segments may be bevelled, and the segments may be of uniform or variable thickness. The Provisional Specification states also that the steps and extreme ends of the segments may be inclined to the circumferential sides or curved.
Patent GB-408982-A (GB)
Title: Improvements in or relating to the hydration of olefines
IPC: C07C29/04
Filed: 1932-10-18
Abstract: Isopropyl or butyl alcohols are produced by reacting propylene, butene 1 or 2 or isobutylene with steam in the presence of catalysts comprising phosphoric acid and manganese, copper, iron, cobalt, or uranium, with or without boron, the amount of acid being more than enough to form orthophosphates but not enough to destroy the solid nature of the catalyst.  The catalysts may be used alone in solid form, or may be supported on carriers such as p  electrode carbon. The temperature may be 100-300 DEG  C. and pressure may be employed up to 100 atmospheres.  Examples describe the use of a catalyst containing 2.6 molecules of phosphoric acid, one of manganese oxide, and half of boric anhydride.
Patent GB-693776-A (GB)
Title: Method of producing high gloss surfaces on aluminium and aluminium-base alloys
IPC: C23F3/03
Filed: 1950-11-28
Abstract: High gloss surfaces are formed on objects of aluminium and aluminium alloys by treating them with a solution containing hydrogen, ammonium, nitrate and fluoride ions in such proportions that ammonium bifluoride can be formed, the treated objects being subsequently chemically or anodically oxidized.  The solution may contain free hydrofluoric acid or ammonium fluoride and may be prepared by adding aqueous ammonia or by introducing ammonia gas into a mixture of nitric and hydrofluoric acids or by mixing ammonium nitrate, water and hydrofluoric acid.  Prior to glossing, the objects may be degreased in a bath comprising 70-90 parts nitric and 10-30 parts hydrofluoric acid.  The objects may be heated approximately to the temperature of the glossing bath before immersion therein, or preliminary heating to an extent determined by the wall thickness at any point may be effected by preliminary heating to a higher temperature followed by partial cooling in cold water or in a current of cold air.  The glossing bath may be replenished by the addition of one-third of the original amount of the various ingredients with additional hydrofluoric acid.  Glossing may be followed by anodic after-glossing and, prior to oxidation, the objects may be passivated by immersion in an aqueous solution of salts, particularly alkali or alkaline earth metal salts, of chromic, permanganic persulphuric, nitric, perchloric or perboric acid.
Patent GB-380277-A (GB)
Title: Improvements in brake drums
IPC: B21K1/28
Filed: 1931-10-20
Abstract: 380,277. Vehicle wheels and brake drums. MICHELIN ET CIE, Clermont Ferrand, Puy de Dome, France. Oct. 20, 1931, No. 29162. Convention date, April 16. [Classes 103 (i) and 144 (i).] In brake drums that are constructed as a single unit with the wheel hub or are secured directly thereto as by welding and are formed by operations that include rolling and pressing, the disc portion of the drum has an increased thickness at the parts 4, 6 adjacent the hub A and the cylindrical part C, that are subject to the greatest stresses, relative to the intermediate part 5. According to Fig. 1, the wheel hub is formed by pressing or forging operations to provide a rib 1, shown in dotted lines, the rib is rolled out to form a nave 2 and the cylindrical part C is then formed by a pressing or stamping operation. The drum may instead be welded directly to or to a flange on the hub. The flange 8 of the drum may be tapered.
Patent GB-861910-A (GB)
Title: Improvements relating to the casting of reinforced concrete beams
IPC: B28B23/06
Filed: 1956-09-25
Abstract: 861,910. Casting reinforced concrete beams. LEES Ltd., R., and OAKDEN, R. R. Sept. 19, 1957 [Sept. 25, 1956], No. 29251/56. Class 87(2). A machine for the production of long runs of reinforced concrete beams comprises means for controlling in alternation the operation of feeding and of consolidating the conconcrete by vibration and the movement of the mould. When a switch 11 is operated, (1) a paddle at the outlet of a large hopper, not shown, makes a quarter turn to deliver a measured quantity of concrete into a hopper 3 which deposits it on the floor over a suitable area. (2) A frame 1, carried on a gantry (not shown) advances lengthwise from a length of beam just previously cast on the floor, from the Fig. 1 to the Fig. 2 position (3) shafts carrying eccentric weights are rotated, in tubes 7, 10, the tubes thus becoming vibratory cores within the mould sides 9, neither moving with the frame 1. The movement of the frame, and the vibration, are stopped at the Fig. 2 position by a limit switch 17; also a switch 19 causes compressed air to be admitted to two upper cylinders 4 which are mounted on a carriage which carries the hopper 3 and is slidable on horizontal rods 2 which are components of the frame 1. Operation of the pistons in the cylinders 4 advances a second carriage 20, also slidable on the rods 2, to which the tubes 7 are attached, which are therefore withdrawn from the previous beam length, leaving holes, of which the walls are still supported by inflated tubular rubber extensions. At the end of its travel a projection 18 from the carriage 20 operates a switch 22 which causes compressed air to be admitted to two lower cylinders 5, the pistons of which move a third carriage 21 to which the tubes 10 and mould sides 9 are attached. If the sides 9 are vibrated they have rubber extensions to support the length of beam just cast. This is also acted on by a transversely operating screeding board 25 carried by the frame 1. At the end of the travel of the carriage 21 a projection 23 therefrom operates a switch 24 which causes compressed air to be admitted to the other sides of the pistons in the cylinders 4 and 5 so that the carriage comprising the hopper 3 and the cylinders is advanced, a projection 12 therefrom operating the switch 11 and recommencing the cycle. For pre-stressed concrete, wires are tensioned along the run of the beams. In the arrangement shown, Fig. 5, three beams are cast side by side. The beams are sub-divided after setting by a diamond abrasive cutting wheel.
Patent GB-422432-A (GB)
Title: Variable speed power transmission mechanism
IPC: F16H33/18
Filed: 1933-10-23
Abstract: 422,432. Variable - speed gearing. McGILL, H., 42, Talbot Avenue, Canterbury, Victoria, Australia. Oct. 23, 1933, No. 29269. [Class 80 (ii)] An epicyclic gear train 3, 9 drives a shaft 4 at speeds varying with the load under the action of weights 16 carried by the planet pinions 9 and moving under centrifugal force between guides 17, 18 in paths eccentric to the pinion axes. Each planet spindle 8 rotates in bearing members 7, 7<a>, secured to plates 6, 6<a> carried by the driving shaft, and carries a spider 11 slotted radially to accommodate pins 14 which carry the, preferably unbalanced, weights 16. The pins 14 are guided at their outer ends between the rings 18 and members 7, 7<a>. Specification 357,454 is referred to.
Patent GB-1369978-A (GB)
Title: Cathodes with textured surface for electrical cells
IPC: H01M4/06
Filed: 1973-06-21
Abstract: 1369978 Cathode manufacture P R MALLORY & CO Inc 21 June 1973 [12 July 1972] 29461/73 Heading H1B To improve the discharge rate of a cell the cathode material is compacted by a pressureapplying member through an element having a textured surface whereby the cathode is provided with a corresponding embossed textured surface. After removal of the element the cathode may then be heat treated. Preferred materials for the element are woven or knitted cloths or screens of nylon, metal or polyester. The effect of the textured surface of the cathode is to increase its reactive area as shown in Fig. 1. The pressure may be applied by a ram or rollers through which the cathode material is fed. The material may include a polymeric binder, e.g. " Teflon " (Trade Mark). The cathode material may constitute the active positive material of the cell or may constitute a gas permeable cathode for a metal-gas cell or fuel cell and contain a catalyst. The cathode is especially intended for use in a cell having an organic electrolyte and an anode of Li, Na, K, Ca, Mg, Cs or Rb. In one cell described the anode comprises lithium, the cathode comprises carbon containing Teflon as binder and the electrolyte comprises lithium perchlorate dissolved in tetrahydrofuran containing liquid SO 2 .
Patent GB-283458-A (GB)
Title: A new or improved tool for cutting leather or other sheet material into strips
IPC: C14B5/04
Filed: 1927-11-04
Abstract: 283,458. Hathaway, J. H. Nov. 4, 1927. Cutting-appliances. - In a tool for cutting leather &c. into strips, safety-razor blades 9 and spacing washers 15 are clamped between telescopic holding members 1, 2, by a screw 13. The cutters are strung upon pins 5. An edge gauge 16 and operating handle 3 are provided.
Patent GB-141665-A (GB)
Title: Improvements in wheel discs and process of making the same
IPC: B21H1/02
Filed: 1919-11-26
Abstract: 141,665. Budd Wheel Corporation, (Assignees of Macken, C. H.). April 15, 1919, [Convention date]. Disks. - Wheel or like disks are formed from a polygonal sheet metal blank 1 by successive rollings in different directions, parallel to lines passing through a common point in the blank, and preferably between a plain roll 7 and a roll having a reduced central portion 5 and conical side portions 6, so as to form a disk as in Fig. 7, with thick central bcss 9 and tapering body portions 10, and of approximately circular form. The disk is then trimmed, flanged, and pierced as in Fig. 10.
Patent GB-1307419-A (GB)
Title: Railway vehicle bogies
IPC: B61F5/12
Filed: 1970-06-18
Abstract: 1307419 Bogies SOC ANON USINES EMILE HENRICOT 18 June 1970 [23 March 1970] 29567/70 Heading B7L  A railway vehicle bogie eomprises side frames 3 having openings 2 in which springs support respective ends of a bolster 1, relative movements of the frames 3 and bolster 1 being controlled by spring-urged wedges 20 at each end of bolster 1. Each opening 2 has V-sectioned side faces 11, 12 which receive corresponding V-sectioned sides 5, 6 of the bolster. Wear plates 7, 8, 9, 10 and 13, 14 are attached to the faces 5, 6, 11 respectively. The V-face 12 has an opening 15 which receives the projection 21 of a V-sectioned wedge 20. A spring 19, acting between the projection 21 and a spring seat 18 in frame 3, urges wedge 20 against wear plates 9, 10 of bolster 1. Wedges 20 at opposite ends of bolster 1 are located on opposite sides of the bolster.
Patent GB-800279-A (GB)
Title: Liquid proportioning device
IPC: B05B7/24
Filed: 1955-10-18
Abstract: 800,279. Mixing in proportionate quantities. McNAIR, H. N., and DINTINO, A. L. Oct. 18, 1955, No. 29739/55. Class 86 Relates to the distribution of a chemical substance by a liquid vehicle in predetermined regulated concentrations, which is especially applicable to the admixture of such chemical substances as insecticides, fertilizers, fire-extinguishing compositions,  &c. with water, &c. In the construction shown in Fig. 1 a conduit 1 is provided with a header 12 having a flange portion 13 to which is attached a container 14. The header 12 is apertured and is fitted with a valve 21 and with a conduit 19 which extends almost to the bottom of container 14. The conduit 1 is formed as a Venturi tube the throat of which is opposite the aperture 16 in the header 12. Ingress of liquid from the conduit I to the container 12 is through a conduit 22 which has a tapered end 25  provided with an opening 32 and projectinto the conduit. 1. Liquid entering through the opening 32 flows through passages progressively enlarged so that the velocity of the liquid decreases, the liquid eventually flowing gently along the conduit 19 until it is dispersed on the surface of the liquid already in the container 14. Liquid flows from the bottom of the container through the conduit 19 and valve 21 to the conduit 1. If the container 14 contains a solid material soluble in the liquid passing through conduit 1, the conduit 19 does not extend into the container as far down as the solid. Alternatively if the liquid in container 14 is of lower specific gravity than the liquid in conduit 1 the flowing liquid through conduit 22 is directed to the bottom of the container 14 to force upwardly the liquid already in the container. The conduit 19 may be flexible and weighted at the bottom. In a modification shown in Fig. 8, the conduit 70 is connected by two flexible pipes 79, 90 to a header 82 to which is attached a container 14. Liquid from the conduit 70 flows into the container by way of metering jet 96, pipe 90 and passage 87, and liquid flows out from the container through conduit 86, passage 83, pipe 79 and passage 77. The flow of liquid into the main venturi conduit may bypass a ball valve which prevents return flow.