baber/WOPTO huggingface dataset:
Patent GB-531418-A (GB)
Title: Improvements in the control of ion-exchange plants
IPC: B01J49/00
Filed: 1939-07-03
Abstract: 531,418. Photoelectric control of water softening plant. PERMUTIT CO., Ltd., HOLMES, E. L., and PRESCOTT, W. G. July 3, 1939, No. 19353. [Class 40 (iii)] [Also in Group I] Plant in which water is passed successively through hydrogen-cation-exchange material and anion-exchange material is provided with means for adding silver nitrate to the effluent or a part thereof. Turbidity following such addition indicates the need for regeneration and may control the operation of the plant automatically. In an example described silver nitrate is added continuously to the effluent water or a stream separated therefrom and the mixture passed through a glass tube provided with a source of light and a light-sensitive cell in a circuit provided with a galvanometer, which serves to indicate when regeneration of the exchange material is necessary. The circuit may also include relays for controlling the operation of the plant automatically. The silver nitrate may be added in an acid solution so as to maintain the pH value of the mixture below 4.
Patent GB-786671-A (GB)
Title: Improvements in and relating to the manufacture of "doped" germanium crystals
IPC: C30B15/04
Filed: 1955-07-05
Abstract: A PN junction is manufactured by placing a germanium crystal of one conductivity type into a bath of a molten semi-conductor material which crystallizes in the same lattice, and has approximately the same lattice distance as germanium, until the germanium is dissolved to saturation point.  The bath is maintained <PICT:0786671/III/1> at a temperature below the melting point of germanium.  A second germanium crystal of opposite conductivity type is then placed in the bath and the temperature lowered slightly so that a layer of germanium of the first conductivity type is deposited on the second crystal to form a PN junction.  The bath material may consist of indium antimonide, gallium antimonide or gallium arsenide.  Arsenic and gallium may constitute the conductivity determining impurities in the germanium.  The process may be repeated in a second bath so that an NPN or PNP semid-conductor body is provided.  The Figure shows an electromagnetic system for lowering the raising germanium crystals 13 and 14 as required, into the indium antimonide melt 3.  The system is sealed in a quartz tube 1, and pipe 5 leads to a vacuum pump, or inert gas supply such as nitrogen.
Patent GB-1098036-A (GB)
Title: Improvements in or relating to the winding up of web material
Inventor: JONES OWEN HERBERT
IPC: B65H23/24
Filed: 1964-05-08
Abstract: 1,098,036. Winding webs. BEASLEY FRENCH & CO. Ltd. May 7, 1965 [May 8, 1964], No. 19392/64. Heading B6B. One or more suction nozzles 7 draw away a laminar film of air on a web W as it is being wound on to a driven spindle 2 to form a web-roll 6.
Patent GB-247089-A (GB)
Title: Process for the regeneration of hides, leather and the like from cuttings and leather waste
IPC: C08L29/06
Filed: 1925-08-04
Abstract: 247,089. Ferretti, A. Aug. 4, 1925. Leathers.-Skin and leather cuttings, especially of untanned rabbit and hare skins, are regenerated by defibring, treating the product with india-rubber latex, forming the mass into sheets, tanning, dyeing and currying at any convenient stage and vulcanizing. To facilitate subsequent tanning the cuttings are steeped in acid or alkaline solutions or in water. Casein may be mixed with the latex.
Patent GB-808002-A (GB)
Title: Improvements relating to electrical engraving machines
IPC: B23H9/06
Filed: 1956-06-26
Abstract: 808,002. Engraving. HILL, J. W. Sept. 24, 1957 [June 26, 1956], No. 19700/56. Class 100(2) Apparatus for use with an electrical engraving machine for enabling engraving to be done in the direction of curvature of curved surfaces comprises a carriage slidably mounted for movement in a straight line and adapted to be interconnected with the electrode to follow its movement along this or a parallel line, a rotatable workholding mounting on the carriage, and means for rotating the work in accordance with the movement of the electrode, in such a way that the circumferential displacement of a point on the curved work surface initially in contact with the electrode is equal to the simultaneous linear displacement of the electrodes. A nut 45, Fig. 5, and bolt 43 clamp together arms 41, Figs. 1 and 5 (a square part of the bolt engaging in a slot 42 between the arms), a base 44 and the work-table 36 of the electrical engraving machine described in Specification 759,074. Secured to the arms 41 is a plate 11 on which is slidable by balls whose travel is limited by pegs 39 a carriage 10, comprising a block 16 and apron portions 14 carrying rods 15 supporting a block 17, which rests on the arms 41 by means of balls 12<1>, and is secured to the rods 15 by bolts 40. The blocks 16, 17 have co-axial roller races 18, 19 respectively, the former carrying a centre 20 to engage one end of the work W to be engraved, and the latter carrying a hollow conical member 21 to support the other end of the work. The block 16 supports on rods 23 a plate 22 having a slot 30 to engage a bush 25 round a spigot 26 carrying the electrode 27 projecting from the engraving unit 28 of the machine, the electrode and plate 22 being free to move relatively at right-angles to the direction of movement of the carriage but constrained to move together in the direction of said movement. A part 34 of the carriage slidably supports plungers 50 carrying a bridge piece 33 rotatably supporting a friction wheel 31 which is in contact with the plate 11 and is urged against the work W by springs 35. When the carriage is moved by the electrode, the wheel 31 rotates the work so that its surface moves under the electrode by an amount equal and opposite to the component of movement of the electrode in the direction of carriage movement, for engraving the direction of curvature. For engraving along the work the arms 41 and the assembly carried thereby are mounted at right-angles to the position of Figs. 1 and 5 by means of the bolt 43, and the carriage is secured if desired on the plate 11 by a bolt 49, and the arms 41 being secured with the bolt 43 in that position along the slot 42 which correctly positions the work relatively to the electrode. The wheel 31 has a facing of fibre, or may be rigid and urged by resilient means against the surface it is to engage. The wheel may be replaced by an inextensible friction driving tape, band or wire anchored to the base at one end, passed round the work and anchored to the base by a tension spring at the other end.
Patent GB-613768-A (GB)
Title: Improvements in or relating to fans
IPC: F04D29/34
Filed: 1946-07-02
Abstract: 613,768. Axial-flow fans. COLLINS, A. L. July 2, 1946, No. 19713. [Class 110 (i)] A fan in which the blades 7 are separate from the hub member 2 having arms 4 extending rigidly therefrom, the blades 7 being constructed from resilient material and having cavities into which the arms '4 are fitted, is characterised in that the cavities are of smaller cross-section before fitting the blades 7 than the portions of the arms 4 which engage therein, The arms 4 may be provided with saw-teeth. or enlargements 11 as additional securing means. The blades 7 may also flex during operation to reduce the helix angle of the blade at the tip.
Patent GB-197630-A (GB)
IPC: H04M7/10
Abstract: 197,630. Coventry Automatic Telephones, Ltd., (McBerty, F. R.). Dec. 9, 1921. Drawings to Specification. Automatic and semi-automatic exchange systems.-The private branch exchange system described is the same as that described in Specification 196,018, but the claims relate to features concerning the extension of calls between the private branch exchange and the main exchange.
Patent GB-964951-A (GB)
Title: Improvements relating to the lubrication of relatively movable parts
Inventor: COLLEY ROWAN HERBERT
IPC: F16N29/00
Filed: 1963-05-17
Abstract: 964,951. Gas turbine plant. ROLLS-ROYCE Ltd. May 17, 1963, No. 19822/63. Heading F1G. [Also in Division F2] The quantity of lubricant supplied to relatively movable parts, such as a bearing for example, is measured and means are provided for indicating the measurement and/or for controlling the operation of the relatively movable parts, the means being dependent upon the value of said measurement. The invention is described with reference to a gas turbine engine wherein a shaft 10 which carries a high pressure compressor rotor and a high pressure turbine rotor is mounted in a ball bearing 12, the outer race 13 of which is carried by a member 14 mounted between walls 15, 16 which are sealed to the shaft 10 by labyrinth seals 20, 21. Lubricant pumped from a reservoir 22 by a pump 23, enters a main supply conduit 24 having branch supply conduits 25 connected thereto. One of the branch supply conduits 25 leads to the bearing 12 and the lubricant is passed therethrough and returned to the reservoir 22 via a scavenge conduit 26. A temperature sensitive member 27 is mounted in the conduit 26 and may be a thermocouple for example. The member 27 indicates whether a satisfactory supply of lubricant to the bearing is being maintained, by producing an electrical voltage which is applied to an arm of an electrical bridge circuit 30. Any unbalancing of the latter is indicated on a meter 31 and/or by the actuation of a bell 32. The bridge circuit 30 could be connected to means for automatically shutting down or controlling the rotational speed of the relatively movable parts. In a modification, the flow rate is checked by disconnecting the conduit 26 and weighing the lubricant which flows for a certain period of time; or a flow meter may be provided.
Patent GB-665190-A (GB)
Title: Method of manufacturing piezoelectric crystal devices
IPC: H01L41/22
Filed: 1947-10-22
Abstract: 665,190. Piezo-electric crystals. BRUSH DEVELOPMENT CO. Oct. 22, 1947 [June 2, 1944[, No. 19865/50. Divided out of 665,100 under which a Specification was laid open to inspection under Sect. 91 of the Acts, May 31, 1948. Drawings to Specification. Class 40 (viii). A piezo-electric instrument is made by connecting a plurality of crystal elements to a flatbase such that in operation they expand in a direction normal to the base, working the free ends of the crystals until all are in a single plane parallel to the base and then enclosing the crystals in a housing having a vibration-transmitting portion. The constructional features of the instrument described are described in Specification 600,853, [Group XL (c)]. Specification 665,189 also is referred to.
Patent GB-515918-A (GB)
Title: A process for the manufacture of improved oils, particularly such as are stable during storage and at increased temperature
IPC: C10G32/02
Filed: 1938-07-05
Abstract: 515,918. Lubricating oils. DEUTSCHE ERDOL AKT.-GES. July 5, 1938, Nos. 19911 and 19912. Convention dates, July 9, 1937, and Dec. 2, 1937. [Class 91] Improved oils with enhanced stability to storage or heat are obtained by blending hydrocarbon oils consisting chiefly of aliphatic oils, such as mineral, shale or low-temperature tar oils, with about 10 per cent. or more of other oils of different origin, but also mainly of an aliphatic character, and treating the blend with a refining agent, such as inorganic or organic acid, salts, metal compounds, selective solvents or an electric field, to produce . a flocculant precipitate of impurities. The second oil may be similar to the first oil, in which case its physical properties are altered by pre-treatment with a refining agent. A suitable blend is obtained by mixing unrefined distillates with crudes of a different origin or with a sulphuric acid raffinate or with a residual oil or with an Edeleanu raffinate. In an example, 50 kilos of a German machine oil refined by treatment with 5 per cent. of concentrated sulphuric acid is blended with 50 kilos. of a raffinate of an oil of the same origin by selective phenol treatment. In another example, 30 kilos of Bayonne oil (Pennsylvanian) is mixed with 70 kilos of a German crude machine oil refined by treatment with 5 per cent. of concentrated sulphuric acid. In another example, gas oil is mixed with lignite tar oil containing creosote. In all cases, a precipitate appears either on mixing or when treated with a small amount (about 1 per cent.) of a refining agent and the qualities of the blend are superior to those of the individual oils. The process may be applied to the blending of motor fuels in which case if the blend shows a strong tendency to form sediment, the blend is redistilled after treatment with the refining agent. Specification 473,100 is referred to.
Patent GB-516708-A (GB)
Title: Improvements in air and fuel supplying means for furnaces
IPC: F23L9/00
Filed: 1938-07-05
Abstract: 516,708. Grates; supplying air for combustion. WATTS, A. J. July 5, 1938, No. 19939. [Class 51 (i)] In a furnace having a fuel supply conduit such as 1 delivering fuel on to a water-cooled dome-shaped fuel distributing member 4 beneath which air is supplied by a pipe 5 and discharged through orifices 7 into the fuel bed 8, air is conducted from the space beneath the fuel distributor 4 through a pipe 12 and delivered above the fuel bed through a nozzle 15. The pipe 12 is welded at 16 to the water pipe 10 leading from the distributor for cooling purposes. The nozzle may be horse-shoe shape with perforated limbs embracing the fuel. delivery pipe 1.
Patent GB-459722-A (GB)
Title: Process for stabilising motor fuels
IPC: C10L1/183
Filed: 1935-07-12
Abstract: Motor fuel is stabilized by adding less than 2 per cent of a tar fraction from peat, coal, torbanite or shale, said fraction containing sufficient constituents boiling between 200 and 325 DEG C. to inhibit gum formation.  Low-temperature coal-tar fractions are specified.  The preferred boiling ranges are from 225 or 250 to 275 DEG  C.  In examples, the quantity added was 0,01 per cent.  The fuel may be a cracked distillate of gasoline boiling-point range or containing gasoline, and may contain relatively large proportions of di- and tri-olefines.  The material added to the fuel may be (1) the tar fraction itself; (2) its alkali-soluble constituents; (3) its acid - soluble constituents; (4) a mixture of (2) and (3); (5) a blend of (2), (3) or (4) with a normal tar fraction; (6) the residue after extraction with alkali; (7) the residue after extraction with acid and alkali.
Patent GB-588373-A (GB)
Title: Improvements in wound protectors
IPC: A61F13/00
Filed: 1944-10-16
Abstract: 588,373. Wound protectors. PURDY, E. H. Oct. 16, 1944, No. 19973. [Class 81 (ii)] A wound protector comprises a relatively rigid frame, e.g., of plastic, bonded to a centrally apertured flexible base 10, e.g., of fabric, coated on its under surface with adhesive for attaching around a wound, the frame having an upstanding flange at its inner margin on which fits a transparent cover 36, retained by releasable means, e.g., latch 38. Separate, relatively movable, flanged frame sections may be provided, whereby the protector conforms to the shape of the wound. The frame may be in two mating semicircular portions 30 and 31 hinged at 34, both frame and flange portions being bevelled at their junction to allow limited displacement about the hinge in either direction. The flange portion 33 may be extended to provide overlap 39 with the cover. The cover may be provided with vent holes and may be hinged to the frame. Auxiliary straps may be fitted which may be extensions of the flexible base.
Patent GB-838502-A (GB)
Title: Polyolefin plastics
IPC: C08K5/58
Filed: 1958-06-23
Abstract: Polyolefins are stabilized against heat, light, and loss of viscosity, by incorporating therein a compound of the formula RxSn(SR1)4-x where R is a monovalent C1 to C18 hydrocarbon radical selected from alkyl, cycloalkyl or aryl, X is an integer from 1 to 3, and -SR1 a monovalent radical selected from hydrocarbon radicals or hydroxy-, esterified hydroxy-, carboxy-, carboxyester and carboxyamide hydrocarbon radicals, and xanthates.  The polyolefin may be high or low-pressure polyethylene or polypropylene.  Exemplified compounds of the above formula are dibutyl tin dilauryl mercaptide, tributyl tin isopropyl xanthate, dibutyl tin dioctyl-thioclycolate, and tributyl tin thiobutyric dibutylamide. The compound may be incorporated in the polyolefin using heated mixing rollers.
Patent GB-531027-A (GB)
Title: Improvements in and relating to gear wheel teeth
IPC: B23F23/12
Filed: 1939-07-10
Abstract: 531,027. Grinding toothed gears. DEUTSCHE NILES WERKE AKT.-GES. July 10, 1939, No. 20028. Convention date, July 11, 1938. [Class 60] [Also in Group XXII] In grinding toothed gears the theoretical involute profile f is modified, in order to minimise the effects of distortion of the tooth under load, to a form f<SP>1</SP> which is obtained by rolling generating from a grinding wheel 1 having a concave contour e<SP>1</SP> obtained by traversing a diamond tool or tools 4, Figs. 2 and 3, by means of guides 5 along straight line paths which lie in a plane a b which is offset by a distance c from a plane containing the grinding wheel axis. The degree of concavity of the profile e<SP>1</SP> may be varied by adjusting the offset c by means of a slide 3. The rolling movement may be imparted to the blank 2 which is also reciprocated in the direction III.
Patent GB-1395411-A (GB)
Title: File storage structures and modular frame units therefor
IPC: A47B63/00
Filed: 1972-05-01
Abstract: 1395411 Furniture frames; connecting furniture in rows SWINGLINE Inc 1 May 1972 [7 May 1971 21 June 1971] 20056/72 Headings A4G and A4H [Also in Division F2] A frame unit for supporting suspension type files as in Specification 34381/74, 3398/75 (see Division B6) comprises hollow upright corner members 12, Fig. 1 connected by cross members 16, 17, 45, 46, having spigot end portions fitted in pairs of horizontally aligned openings 14, 15, 34, 35 in the corner members 12, the pairs of openings at each corner being arranged at different levels, each adjacent intersecting pair of spigot end portions at each corner being retained by an internal locking member engaging groove means in both the spigot portions. In a first form, Fig. 10, each spigot portion has a pair of spaced V-section grooves 19 and 20 and each locking member is of U-form with legs 22 which interlock with the grooves 19 and 20. The ends of members 12 are closed by end caps 24 provided with sockets 27 for the reception of pins 28 so that then the units can be vertically stacked see Figs. 3, 4, (not shown). The units can be joined side-by-side by brackets 52, Fig. 2, apertured at 54 to receive pins 28 see Figs. 4, 5, (not shown). In a second form, Fig. 6A, each locking member is integral with an end cap 36A and comprises two opposed pairs of open-ended slots such as 44A and 46A of different depths where inner edge portions interlock with rectangular section grooves 34A, 35A and 32A, 33A in the spigot end portions. The cap sides have projections such as 56A, 57A frictionally engaging the inner surfaces of the corner member. The cap can be removed from the corner member by a self-tapping tool (52A), Fig. 9A, (not shown) inserted in a socket 48A.
Patent GB-516776-A (GB)
Title: New synthetic rubber-like materials
IPC: C08F236/04
Filed: 1938-07-06
Abstract: 516,776. Synthetic rubber. HABGOOD, B. J., HILL, R., ISAACS, E., MORGAN, L. B., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. July 6, 1938, No. 20061. [Class 2 (iii)] Synthetic rubber is produced by polymerizing in aqueous emulsion mixtures of butadiene or its homologues with an ester or esters of #-2-furylacrylic acid. Suitable esters are methyl, ethyl, other lower alkyl, #-chlorethyl, #-hydroxyethyl, benzyl and phenyl #-2-furyl-acrylates. Cetyl p-dimethylaminobenzoate methosulphate (see Specification 470,346) may be used as emulsifying agent, and electrolytes such as acetic acid with or without sodium acetate and also polymerization catalysts such as organic and inorganic peroxides, and modifying agents such as aliphatic chlorine compounds may be added to the emulsion. Increasing proportions of the ester render the product more resistant to oils but less resilient. Examples describe the polymerization in emulsion of butadiene with the methyl, ethyl, butyl and #-phlorethyl esters of #-2-furyl-acrylic acid respectively.
Patent GB-812142-A (GB)
Title: Manufacture of double phase adhesive films
IPC: C09J7/35
Filed: 1955-07-11
Abstract: An amorphous, potentially adhesive, polymeric material and an excess of solid crystalline plasticizer therefor, which excess will merge with the polymeric material on heating and on subsequent cooling to room temperature will remain merged with it in a supercooled state for a substantial length of time, are blended together e.g. by heating, to provide substantial complete merger as a molecular mixture.  A film may be formed of said blend.  An exposed surface of the film may be moistened at a temperature below the melting point of the crystalline plasticizer, with a solvent which dissolves the plasticizer more readily than the polymeric material to expedite separation of the excess plasticizer in crystalline form.  The solvent is volatilized as the film sets.  Polymeric materials specified are butadiene-styrene copolymer, indene resin, polystyrene, polymerized resin, e.g. "Synthetic A-56" and "Pentalyn G" (Registered Trade Marks), and mixtures thereof.  Crystalline plasticizers specified are diphenyl phthalate, cyclohexyl para toluene sulphonamide, dicyclohexyl phthalate, and tri (para tertiary butyl phenyl) phosphate.  Specification 624,620 is referred to.
Patent GB-779346-A (GB)
Title: Regulator for mechanical rectifier
IPC: H02M1/26
Filed: 1953-07-20
Abstract: 779,346. Rectifying. 1-T-E CIRCUIT BREAKER CO. July 20, 1953 [Jan. 15, 1953], No. 20103/53. Class 38 (2). The output voltage, current or other electrical quantity of a polyphase mechanical rectifier having contacts 31-36 and switching chokes 20A, 20B, 20C is kept constant by the operation of a mechanism which is controlled by a device sensitive to the rectifier current and an overlap regulator sensitive to contact overlap time. The contacts are driven by motor M to form a bridge connected rectifier between three-phase supply 12 and D.C. output 39-40. During each current step the unsaturated switch choke 20A, 20B or 20C acts as a transformer, and a current is passed through coil 80 by way of rectifiers 71, 72, 73, 74 and inductive windings 65A, 65B, 65C, when one or other of the two windings coupled with each of these windings is short-circuited by closure of its associated contacts. This current passes from beginning of the current step to opening of the outgoing contacts and is a function of the overlap time. Vane 97 moved by oil pressure from pump 95 past piston 91 attached to core 82 of winding 80 against the force exerted through lever 83 and spring 85 rotates through an angle which is proportional to the current in winding 80 and therefore a function of the overlap time. By a similar mechanism operated by current in coil 124 derived from current transformer 122, vane 140 is moved through an angle which is a function of the load current. Fig. 3 shows a system of mechanical linkages by which the movements of the two vanes are converted into an angular movement of stator 160 of the motor driving the contacts and a vertical movement of overlap shaft 262. Rotation of the stator varies the time at which the incoming contacts close and this varies the output D.C. volts. Movement of shaft 262 varies the position of the moving contacts relative to the fixed contacts and thus varies the contact overlap time so that contact opening takes place in the middle of the current step for all rectifier outputs. Specification 765,737 is referred to.