baber/WOPTO huggingface dataset:
Patent GB-644016-A (GB)
Title: Quinoxalines and derivatives thereof
IPC: C07D241/44
Filed: 1947-05-07
Abstract: 2-Haloquinoxalines or substitution derivatives thereof are prepared from 2-hydroxyquinoxaline or substitution derivative thereof by reaction with a phosphorus halide or a mixture of phosphorus halides at an elevated temperature, e.g. 130 DEG  C. Specified phosphorus halides are the pentachloride and oxychloride as the corresponding bromo-derivatives. 2-Hydroxyquinoxaline or derivatives substituted in the benzene ring may be prepared by heating o-phenylene diamine or a ring-substituted derivative with glyoxalic acid, the sodium bisulphite addition product of glyoxalic acid or an alkyl glyoxalate in an aqueous medium.  2-Aminoquinoxaline or substitution derivatives thereof are prepared by heating the 2-halo-derivative with ammonia in an inert solvent such as alcohol.  Specified derivatives of 2-aminoquinoxaline prepared include the 3-methyl, 6-methyl, 6-methoxyl, 6-chloro, 6-nitro, 6-bromo and 6-carboxy derivatives.  In the examples: (1) n-butyl glyoxalate is treated with o-phenylene diamine to give 2-hydroxyquinoxaline, which is treated with a mixture of phosphorus pentachloride or oxychloride to give 2-chloroquinoxaline, which (2) is further reacted with ammonia to give 2-aminoquinoxaline.  The Specification as open to inspection under Sect. 91 comprises also the preparation of 2-hydroxyquinoxalines substituted in the heterocyclic part of the ring, e.g. 2-hydroxy-3-methylquinoxaline, by the use of the appropriate a -substituted glyoxalic acid or derivative.  This subject-matter does not appear in the Specification as accepted.
Patent GB-671944-A (GB)
Title: Improved means for keeping toast hot
IPC: A47G19/14
Filed: 1949-05-09
Abstract: 671,944. Holders for toast; jugs &c. PEDDER, L. C. Feb. 24, 1950. [May 9, 1949] No. 12340/49. Class 128. A toast holder which can be permanently or detachably mounted on the side of a hot water jug &c. comprises a sheet metal pocket a having an outer wall between which and the side of the jug toast can be placed and kept hot. The pocket may be formed by bending the edges of a plate to form sides c and attachment flanges d or by turning inwardly its side and bottom edges. Two pockets may. be held detachably on the sides of the jug by resilient connectors, e.g. springs or cords, or by strips extending under the jug, which adjustably connect the pockets, e.g. in a pin and slot engagement.
Patent GB-411658-A (GB)
Title: Improvements in electromagnetic switches
IPC: H01H29/16
Filed: 1933-09-18
Abstract: 411,658. Switching-systems for consuming devices. WILKINSON, G., 23, Otley Road, Harrogate. Sept. 18, 1933, No. 12357. [Class 38 (iv).] An electromagnetic switch, adapted to control two or more auxiliary load circuits in a load levelling system, comprises two or more mercury contact switches with floating armatures f, the switches being independently adjustable and under the control of a single electromagnet h in the main load circuit. In the form shown in Figs. 1 and 2, the armature f and mercury contacts e of each switch are mounted in sealed containers d provided with integral end rings d<1> adjustably mounted on vertical rods j. The effect of the electromagnet h on the armatures may be opposed by permanent magnets m adjustably mounted beneath the switches, in order to vary the current values at which the switches open and close. In a modification, Fig. 6, three switches 1-3 are controlled by a single electromagnet h, and the polepieces of the magnet carry auxiliary windings h<1> in series with the auxiliary load circuits. These windings may be connected so as to assist or oppose the main winding ; in the former case the interval between the opening and closing values of the current is narrowed, and in the latter case it is widened.
Patent GB-628510-A (GB)
Title: Improvements in or relating to the production of high pressure pipes and vessels
IPC: B21D51/24
Filed: 1947-05-07
Abstract: 628,510. Making hollow-ware and gilled pipes. ANGLO-IRANIAN OIL CO., Ltd., and VIVIAN, A. C. May 7, 1947, No. 12357. [Classes 83 (ii) and 83 (iv)] Jointing by stamping.-In prestressing a mild steel or other pipe 11 having external bands 10, which may be used in making a pressure vessel, by supporting the pipe on a coaxial cylinder 15 by end members 16 and forcing liquid into the annular space 19, the end members being capable of sliding on said cylinder. The end members 16 may each consist of a flanged ring, the cylindrical part 116 of which projects into the space 19 and engages the pipe 10 and cylinder 15, the joints preferably being made liquid-tight by rubber or leather packing 18. The flanges 16 are bolted at 17 to flanged rings 12 welded to the end bands and to the pipe 11. The members 16 and cylinder 15 are then removed and dished or conical ends may be attached and the vessel tested at a pressure 50 per cent above the working pressure. The pipe is annealed, before or after expanding, by heating to 650‹ C. and cooling slowly.
Patent GB-578954-A (GB)
Title: Improvements in packing devices
IPC: F16J15/32
Filed: 1941-09-24
Abstract: 578,954. Packing. OLAER PATENT CO. Sept. 24, 1941, No. 12398. Convention date, Feb. 5, 1940. [Classes 122 (i) and 122 (v)] Packing for pistons, stuffing boxes, and like apparatus subjected to high pressure, comprises a number of resilient metallic discs 3, 7 the spaces between which are partly filled with rings 6, 10 of rubber or like elastic material. The discs may be tapered, and their free ends may be slightly curved.
Patent GB-698642-A (GB)
Title: Electric limit switches
Inventor: BRETON LESLIE ARTHUR LE
IPC: H01H19/18
Filed: 1951-05-28
Abstract: 698,642. Actuation of switches; controllers. HOPE & SONS, Ltd., H. May 26, 1952 [May 28, 1951], No. 12435/51. Classes 38 (iii) and 38 (v) A limit switch for arresting the action of a reversible electric motor comprises a screw-threaded spindle d driven by the motor, a non-rotatable nut k driven rectilinearly by the spindle till it engages one of two adjustable collars or stops o on a sleeve i whereupon the sleeve moves along with the nut and a collar n, also adjustable on the sleeve causes a spring biased contact f to disengage two fixed contacts g thereby breaking the circuit to an electromagnetic contactor controlling the motor circuit. Should the contactor fail to respond to the limit switch the sleeve i moves further and contact plungers s leave contact strips t to break the motor circuit. The safety switch s, t does not respond during normal working.
Patent GB-124699-A (GB)
IPC: A41D11/00
Abstract: 124,699. White, A. E., (Venus Manufacturing Co.). Jan. 23, 1919. Hoods. - An outdoor garment for infants is provided with a hood 22 having a depending free flap 23 provided with a central breathing aperture 24 and with tie ribbons 25.
Patent GB-255185-A (GB)
Title: Transmission of pictures or the like by electricity
IPC: H04N1/036
Filed: 1925-05-14
Abstract: 255,185. Western Electric Co., Ltd., (Western Electric Co., Inc.). May 14, 1935. Copying-telegraphs.-The received modulated carrier current is utilized without demodulation to reproduce the picture or other representation as a trace of uniform width and variable density. The apparatus is of the type in which the received current is passed through a shutter mounted in a magnetic field, thus vibrating the shutter to control light passing through an aperture on to a moving sensitized recording surface. and, according to the invention, the direction of vibration is arranged to be parallel to the direction of motion of the recording surface where the light is incident upon it. The shutter in the form of a single string or ribbon 15, Figs. 1 and 3, is mounted in the field of a magnet 12 in front of an aperture 13 on which light from a source 14 is focused by a lens 16, and the light passing the shutter is focused by a lens 17 on the recording surface 18 mounted on a drum to which rotary and axial movements are imparted. The surface 18 is thus exposed twice per carrier current cycle to produce upon it a helical trace of uniform width and of an intensity varying in accordance with the amplitude of vibration of the shutter 15, i.e. with the amplitude of the received current. The effective length and width of the aperture 13 may be varied by adjustment of a plate 21 and of jaws 20 respectively. The apparatus is applicable to the copying-telegraph system described in Specification 242,694.
Patent GB-473254-A (GB)
Title: A linkage joint
IPC: F16C11/06
Filed: 1937-05-05
Abstract: 473,254. Ball joints. HARDY, SPICER, & CO., Ltd., and HARDY, J. L. May 5, 1937, No. 12797. [Class 65 (ii)] A linkage joint, particularly for vehicle steering - gear, comprises a hollow housing 10 with a part-spherical internal surface having an opening through which a pin 14 passes with clearance to fit the bore of a rigid bush 16 of an oil-retaining nature shaped to fit the part - spherical surface of the housing, the pin having a flange 17 making a good joint with the inner end of the bush and resilient means (spring 18) acting on the pin or its flange to press the flange 17, bush 16 and housing into close contact to retain oil in the hollow housing, which is closed by a cap 20. The cap 20 may be secured by turning over the edge of the housing, by a spring ring, or by screwing into the housing, and has a recess, or carries a riveted washer 25 formed with a recess, to locate the spring 18. The bush 16 is preferably of porous bronze. The housing 10 and pin 14 may be enclosed in a rubber or leather oilretaining bag.
Patent GB-167567-A (GB)
Title: Improvements in and relating to high frequency electric signalling systems
IPC: H04L27/04
Filed: 1920-05-08
Abstract: 167,567. British Thomson - Houston Co., Ltd., (General Electric Co.) May 8, 1920. Drawings to Specification. Right to Patent relinquished. Thermionic oscillation generators; keying systems.-In systems of signalling by high-frequency currents produced by reactively coupled thermionic valves, a condenser in the grid circuit normally keeps the grid sufficiently negative to prevent the production of oscillations, signalling being effected by shunting or short-circuiting this condenser, which may be the grid-leak condenser, or in series with it. The grid and plate circuits are not directly coupled to each other but to separate coils in the aerial.
Patent GB-138527-A (GB)
Title: Improvements in or connected with artificial limbs
IPC: A61F2/58
Filed: 1919-05-21
Abstract: 138,527. Blatchford, C. A. May 21, 1919. Limbs, artificial.-In the type of arm in which bending at the elbow-joint causes twisting of the forearm, special lever-and-link mechanism is fitted for converting the angular movement of the forearm about the elbow-joint into the axial rotation or twist of the forearm. In the construction shown in Fig. 1, the forearm is attached to an operating-sector 9 which rotates freely on the non- rotating joint-pin 10. A fixed rod 18, supported by forwardly and downwardly extending arms 17 on the pin 10, is engaged by a slotted link 20 on an arm carried by the forearm sleeve 13, which is rotatable but not slidable on the sector-carrying member. The rod 18 causes the link 20 to lag when the forearm is raised. and thus twists the sleeve. In the modified arrangement shown in Fig. 5, means are provided for putting the twisting movement into or out of action at will. In this case, the twisting movement is conveyed to an upper sleeve 27'. By manipulating a spring pin having an attached locking-finger 24, the upper sleeve can be locked to the main sleeve 13<a> to twist the forearm, or the main sleeve can be released therefrom and locked against rotation by the pin being pushed into the slot 27 on the non- rotary sector-carrying member 8.
Patent GB-1527344-A (GB)
Title: All-metal seals
IPC: F16J15/08
Filed: 1977-03-28
Abstract: 1527344 Seals KEMPCHEN & CO GmbH 28 March 1977 [29 April 1976] 12874/77 Heading F2B An all-metal seal, for flange-joints &c., comprises a spirally-wound metal spring core 1 having a cladding of soft metal 2 applied to at least the upper and lower surfaces 4, 3 of the core 1, the spring core 1 being formed as a tightly wound spiral ring from a V-shaped cross-section metal strip 5 with the ends of the V-limbs 6 lying closely pressed together and the ends of the V-limbs 6 being formed to provide flat upper and lower surfaces 4, 3 on the spring core 1. As shown, the flat surfaces 4, 3 may be readily achieved by using a V-shaped metal strip with bevelled edges or by simply machining, e.g. grinding, the core end faces after spirally winding the core 1. Alternatively (Figs. 3 and 4, not shown) the V-limbs 6 of the metal strip may be thickened, e.g. flanged portions (8) or in Fig. 5 (not shown) have foldedover edge portions, to provide the flat surfaces 3, 4. To ensure the spirally wound layers are tightly pressed together to obviate gaps between the spiral layers, into which such gaps the soft metal cladding 2 could creep and penetrate after installation, only the limbs 6 (as shown) are in actual contact, a spacing cavity 7 being left free at the base of the V-channel sections (Fig. 2) and (Figs. 3 and 5, not shown). Alternatively (Fig. 4, not shown), the base of the V-sections may also be thickened (9) whereby the intermediate side wall portions of the V- limbs 6 overlap each other with a clearance cavity therebetween to ensure the outer ends of the V-limbs 6 are tightly pressed together. The V-section metal strip 5 may be of steel or bronze and the soft metal cladding 2 may be of silver, gold, aluminium, copper or indium or alloys of these materials.
Patent GB-183944-A (GB)
Title: Improvements in squeegees
IPC: G03D15/02
Filed: 1921-05-05
Abstract: 183,944. Keen, A. P., and Smith, W. May 5, 1921. Squeegees.-A roller squeegee for photographic work or causing paper or textile material to adhere to smooth surfaces has a strong frame A of angle-section material, preferably T-section, with bosses F of integral form adapted to provide elongated bearings for the spindle J. The bosses F are preferably bushed. The handle C is spigoted into a recess in the boss B on the frame A and secured by a screw D.
Patent GB-148665-A (GB)
Title: Device for preventing the theft of bicycles and motor cycles
IPC: B62H5/06
Filed: 1919-05-22
Abstract: 148,665. Eindhoven, J. May 22, 1919. No Patent granted (Sealing fee not paid). Guarding against unauthorized use.-A device for preventing theft of cycles and motor-cycles comprises a removable pin 17 passing through both sides of the frame and fork tubes 13, 12, a xing 19 enclosing the point of the pin and clamped around the frame tube by means of an inaccessible screw 15 and provided with a space for the insertion of the pin, and a figure or letter lock adapted to fill the space and prevent removal of the pin. The fork tube may be reinforced by a tube 11 soldered or otherwise fixed in position. The lock used comprises a number of wheels 6 and a pivot 2 or bars 8 adapted to be placed eccentrically in the wheels to unlock the lock. The locking parts of the lock are arranged to move in a direction parallel to the sides of the wheels and at right angles to their axes. The pivot 2 and wheels 6 have a key 3 and corresponding grooves; and in the alternative form a slotted tube 18 fixed in the lock frame which acts as a pivot for correspondingly slotted wheels, the locking member in this case comprising the bar 8. The pivot 2 or bar 8 are secured to a fork piece 5 sliding in slots in the lock frame and operated by a rod 1 secured at right angles to the fork piece 5. The lock engages the space in the ring 19 by means of fillets, one on the lock frame and the other on the fork piece 5, which engage grooves 16 in members of the ring into which the lock is slid sideways to cover the head of the pin, after insertion of the latter through the head tubes. A notch is provided in the upper member of the ring and the rod 1 is lifted into engagement with this to secure the lock. This operation places the pivot 2 or bar 8 centrally in the wheels of the lock which may then be turned to fasten it.
Patent GB-684976-A (GB)
Title: Polythene compositions
Inventor: NAUNTON WILLIAM JOHNSON SMITH
IPC: C08K5/39
Filed: 1950-05-24
Abstract: Compositions comprise polyethylene and a minor proportion of a nickel salt of a dialkyldithiocarbamic acid of the formula RR1NCS2H, where R and R1 stand for alkyl radicals together containing at least 8 carbon atoms; specified is nickel dibutyldithiocarbamate.  The amount of nickel salt used is preferably 0.5 to 5 per cent by weight of the polyethylene. The presence of the nickel salts protects the polyethylene against the action of sunlight.
Patent GB-343829-A (GB)
Title: Process for the production of alkali phosphates
IPC: C01B25/30
Filed: 1930-04-29
Abstract: Alkali phosphates and sulphates; iron oxide and sulphide; copper and zinc chlorides; hydrochloric acid; ferrophosphorus.--Alkali phosphates, especially trisodium phosphate, are obtained in a cyclic process, by heating ferrous sulphide with alkali chloride, oxygen and steam to form ferric oxide, hydrogen chloride and alkali sulphate; this latter is then heated with a metal-phosphorus alloy, especially ferrophosphorus, to produce the alkali phosphate and ferrous sulphide, which is reemployed in the first reaction.  This first reaction may be carried out in combination with the chloridizing roasting of roasted zinciferous or cupriferous pyrites, ferrous sulphide being added in place of all or part of the usual addition of green pyrites.  The ferric oxide may be converted into ferro-phosphorus by heating with coal and calcium or aluminium phosphate, the silicate slag obtained being suitable for conversion into cement.
Patent GB-1002207-A (GB)
Title: Organically modified magnesias
IPC: C04B33/13
Filed: 1963-04-03
Abstract: An organically-modified magnesia having an organic content up to 35% may be used as an organic-inorganic-compatible additive for fuel oils and lubricants.  The modified magnesia is obtained from a lightly calcined magnesia and a hydroxy aryl compound or organic alcohol containing up to 18 carbon atoms, or an organic amino or organic sulphur compound containing up to 20 carbon atoms.  The only example of a fuel oil additive is a magnesium oxide modified with decyl and benzyl alcohol which can be dispersed at a solids concentration of 40-70% in kerosene using only 1-2% aerosol O.T. (the dioctyl ester of sodium sulphosuccinic acid). No examples of lubricant additives are given.ALSO:An organically modified magnesia having an organic content of up to 35% is prepared from a lightly-calcined magnesium oxide, MgO, having an iodine adsorption number of from 10-300 as defined in the Specification, by admixture with an aryl hydroxy compound or an alcohol containing up to 18 carbon atoms, or an organic amino compound or an organic sulphur compound containing up to 20 carbon atoms at a temperature from 0-225 DEG  C., preferably 65-170 DEG  C., for a period of 1/2 -80 hours, preferably under anhydrous conditions and preferably in the presence of an inert, non-polar solvent e.g. benzene, toluene, heptane, octane, xylene or carbon tetrachloride. Preferably an excess of the organic reactant is employed, for example at least a 10% molar excess over the amount to be introduced into the magnesium oxide.  Reaction may be carried out under reflux.  The product is then recovered by filtration, washed, dried at 65-100 DEG C. and pulverized, and contains from 1-35% organic material, preferably 2.5 to 25%. Alternatively, organically-modified MgO may be obtained without the necessity of filtration, washing and drying by using a fluidized bed technique in which pulverized MgO is fluidized by a gas stream containing vaporized organic reactant.  The magnesium oxide starting material is lightly calcined, i.e. less crystalline in character than periclase, and is a commercially available derivative of magnesium carbonate or of magnesium hydroxide. It can be produced by the method set forth in Specifications 955,931 and 972,323.  A wide variety of suitable organic reagents is specified.  The product is stated to be useful as a filler, reinforcing agent, accelerator or vulcanizing aid for elastomers and polymers, or as an additive for fuel oils and lubricants.
Patent GB-117996-A (GB)
Title: Improvements in or relating to Electric Ovens.
Inventor: MJELVA KARL
IPC: A21B1/22
Filed: 1917-09-14
Abstract: 117,996. Mjelva, K. Sept. 14, 1917. Electric ovens.-A baker's oven heated at top and bottom by plates 5, 3 of the kind described in Specification 1885/11 is provided with one or more removable intermediate heating plates 4 of the same kind, so that it can be used as a single chamber or in two or more compartments, each heated both above and below. The heating plates 3, 4, and 5 slide on rails and carry terminal plugs 9 entering sockets 10 at the back of the oven. Each plate comprises resistance coils sandwiched between metal sheets. Reference has been directed by the Comptroller to Specifications 21557/10, 13107/13, and 103,476.
Patent GB-1527835-A (GB)
Title: Torsionally compliant helicopter rotor blade with stability and performace characteristics
IPC: B64C27/467
Filed: 1977-03-29
Abstract: 1527835 Helicopter rotor blades UNITED TECHNOLOGIES CORP 29 March 1977 [12 April 1976] 13232/77 Heading B7W In order to improve the torsional stability of a torsionally flexible helicopter rotor blade, the blade has at its tip portion 26 the locus of centres of lift 38 located rearwardly of the locus of the shear centres 40, and at its roof portion the loci substantially coincident. The tip portion is of maximum torsional flexibility and the root portion is substantially torsionally inflexible.
Patent GB-271475-A (GB)
Title: Improvements in photographic emulsions
IPC: G03C1/34
Filed: 1927-05-17
Abstract: 271,475. I. G. Farbenindustrie Akt.- Ges. May 20, 1926, [Convention date]. Plates and films; emulsion coatings, preparing.-Gelatin or other colloid used in the manufacture of silver halide emulsions is enriched during its manufacture in its content of iminazole or derivatives thereof. Alternatively, iminazole or a derivative thereof, such as nitrobenziminazole, is added to the colloid before the emulsion is made, or to the emulsion itself either during its production, or when it is coated upon a support. The addition of such bodies in sufficient amount enables highly sensitive emulsions to be produced by employing colloids that ordinarily cannot be used because they produce fog before the emulsion has ripened to the sensitiveness desired. Degradation products of proteins such as histidine. iminazole alanine) may be so employed.
Patent GB-1089225-A (GB)
Title: Secateurs
IPC: A01G3/02
Filed: 1966-03-25
Abstract: 1,089,225. Secateurs; hand tool handles. F. FREUND, K. FREUND, W. SIEBERS, [trading as HUGO FREUND]. March 25, 1966 [April 1, 1965], No. 13328/66. Headings B4B and B4K. [Also in Division F2] In secateurs comprising a pair of pivoted members 10, 11, Fig. 1, defining two handles 12, 13 and two jaws 14, 15, the member 10 is in two parts which define therebetween a space in which is housed a spring 21 biasing the jaws open, the spring being supported by rivets (16), Fig. 2 (not shown), interconnecting the two parts and having its movable end bearing on a lug 23, Fig. 3, projecting from the other member 11, the lug being separated by a cam surface 36 from a recess 25 which receives a locking member 26 when the jaws are fully closed. The spring has an indentation (22), Fig. 2 (not shown), engaged by one of the rivets 16 to prevent longitudinal movement of the spring relative to the two-part member 10. The locking: member 26 comprises a bolt the shank (27), Fig. 4 (not shown), of which is movably housed in a slot 24 in the two-part member 10, the end of the shank being engageable by a resilient cap (29). The handles 12, 13 are fitted with sleeves 33, 34 of rubber or like elastomeric material. The jaw portions of the two part member 10 have secured therebetween the web of a T-shaped anvil 17 the flange of which covers the upper edges of the jaw portions. The jaw of the other member 11 has a knife edge 19. Alternatively, the anvil may be replaced by a knife edge.