baber/WOPTO huggingface dataset:
Patent GB-655799-A (GB)
Title: Improvements in carbon black manufacture
IPC: C09C1/50
Filed: 1948-12-30
Abstract: Carbon black is produced by flowing a plurality of confined hydrocarbon gas streams, of diameter 3/32 -1 inch uniformly spaced at 3.4-8.425 times the stream diameter upwardly through a heated furnace chamber to <PICT:0655799/III/1> heat the hydrocarbon to 1400-2400 DEG F., flowing air upwardly around but out of contact with the streams at not more than 3 feet per second, without turbulence in amount sufficient only to effect partial combustion of the hydrocarbon, thereafter contacting the air with the hydrocarbon streams flowing at not less than 12 times the velocity of the air flow, cooling the effluent combustion gases and collecting the carbon black.  Air from blower 30 passes through pipe 32 with control dampers 33 to metal casing 17 and thence through perforations in inclined partitions 18 to refractory walled reaction chamber 1.  Natural gas with or without enriching hydrocarbons and/or steam preheated to 500 DEG  F. is fed, through manifolds 23 and refractory, e.g. silicon carbide, mullite, or alumina, burner tubes 25 wherein heat reflected from walls of chamber 1 causes partial pyrolysis, to chamber 1 and ignited.  The air-gas ratio should be between 3.5 : 1 and 7 : 1 and the gaseous suspension of carbon passes from chamber 1, through throat 11 and conduit 12 with water sprays 12a, to conventional cooling and collecting means.  Manifolds 23 are slidably mounted on a flange on horizontal tubular water cooled supports 20 so that they may be withdrawn through closable slots 34 for replacement of burner tubes. Furnace scale falls down inclined partitions 18 into conduit 19. Specification 655,798 is referred to.
Patent GB-1048017-A (GB)
Title: Improvements in or relating to peroxidic compounds
IPC: C08F283/01
Filed: 1963-08-23
Abstract: Unsaturated polyester resins may be copolymerized with unsaturated monomers using as catalyst an organic peroxidic compound, a vanadium compound and an organic sulphur compound having reducing properties. The organic sulphur compound may be partially or wholly replaced by an inorganic sulphur compound having reducing properties, which, if desired, may be dissolved in a solvent, such as a plasticizer.  The vanadium compounds which may be used are (a) compounds of trivalent to pentavalent vanadium in which the vanadium is present in the form of, or is contained in, the cationic component, i.e. salts of inorganic and organic acids; (b) complex salts of organic acids, complexes formed with organic compounds; (c) esters of acids of vanadium and (d) solutions of vanadium oxides.  Suitable sulphur compounds are aliphatic and aromatic mercaptans and their derivatives; acids having mercapto groups, and their derivatives; aliphatic and aromatic thioethers and disulphides; sulphinic acids and their esters; thioacids and their derivatives; aliphatic and aromatic sulphoxides and sulphur dioxide.  Both the vanadium and the sulphur compounds may be used as such or in solution.  The peroxidic compounds may be organic peroxides, hydroperoxides, peresters and peracids.  Extensive lists of the catalyst components are given and there are many examples of curing unsaturated polyester resins.
Patent GB-483809-A (GB)
Title: Improvements in or relating to processes for the manufacture of artificial textile fibres
IPC: D01F4/00
Filed: 1936-08-21
Abstract: Artificial wool, cotton, &c. are made by spinning alkaline solutions of casein into an acid coagulating bath containing a substance which renders the coagulated fibres insoluble.  Suitable substances are aluminium salts, tin salts and formaldehyde.  In examples, the baths contain sulphuric acid, sodium sulphate, aluminium sulphate or potash alum, and small quantities of tin salts; or sulphuric acid, aluminium sulphate or potash alum, and sodium chloride, and optionally small quantities of magnesium sulphate, zinc sulphate, ammonium sulphate, &c. to assist coagulation.  With solutions of casein containing viscose, the proportion of acid in the coagulation bath may be reduced. Specifications 483,731, 483,807, and 483,808 are referred to.
Patent GB-876342-A (GB)
Title: Improvements in or relating to tensioning mechanisms
Inventor: MAXFIELD HAROLD
IPC: B21C47/00
Filed: 1956-11-05
Abstract: 876,342. Automatic tension control systems. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Feb. 5, 1958 [Nov. 5, 1956] No. 33768/56. Class 38 (4). [Also in Groups IX, XVI and XXII] A tensioning mechanism comprises means for imparting tension to a member and a braking mechanism for locking said means against movement in the event of breakage of the member. Two alternative sets of tensioning mechanism are employed to increase the range of tension which can be applied to a strip 6 passing through a cold rolling mill 1. A roller 11 is rotatably mounted on a lever 14 which has a movable weight 16 at one end, a spring damper D at the other end and a toothed quadrant 17 at a pivot point 15 on an upright 8 which meshes with a pinion 18 of a potentiometer speed control for a motor driving a reel 7. The second set comprises a roller 12 rotatably mounted between plates 19 which are pivotally attached to levers 20 and 21 (not shown), themselves pivoted at 22 to the upright 8 and having a similar toothed quadrant 23 mounted as above. A movable weight 31 is fitted to a shaft 30 supported between links 28 and 29 dependant from the levers 20 and 2] said weight being carried on sleeves slidable along the shaft 30 and located thereon by locking collars 57 and 58. A braking mechanism 24 mounted on the levers 20 and 21 comprises two rollers 36, 37, the axis of the roller 37 being eccentric and carrying a spring-loaded plate 38 at one end and a pin 48 at the other end held by a cranked lever arm 44 pivoted at 41 on a frame member 35. A solenoid 25 and sprung armature 32 mounted on the levers 20 and 21 are controlled by a switch 26 operated by a cranked arm 27 on the plate 19. In operation the strip 6 passes from the reel 7 round rollers 9, 11 or 12, 10 and 13 to work rolls 4 and 5 and the weight 16 or 31 is adjusted to impart the required tension. Variation of the strip tension causes the speed of the reel 7 to be adjusted to maintain constant tension. If the strip breaks when using the roller 11, the damper D limits the fall of the weight 16 and with the roller 12 the switch 26 is operated, energizing the solenoid 25 and causing the armature 32 to disengage the pin 48 and enable the spring 39 to draw the roller 37 into braking contact with the upright 50 and thereby limit the fall of the weight 31. A similar tensioning mechanism is used at the output side of the mill. Specification 775,096 is referred to.
Patent GB-1303790-A (GB)
IPC: D06F75/18
Filed: 1970-09-17
Abstract: 1303790 Steam and spray irons SUNBEAM CORP 17 Sept 1970 [17 Sept 1969] 33838/72 Divided out of 1301317 Heading D1A An electric steam and spray iron has a manual value 135 for slectively directing water pumped from a reservoir 25 by a manual pump 64 either to a steam generating cavity 130 in the soleplate 22 or to a spray nozzle 137. A value 56 actuated manually by a rod 54 permits a drip feed of water from the reservoir to the steam generating cavity 130 which communicates by way of a labyrinth with steam ports 98 in the soleplate. Use of the pump 64 either provides steam at greater pressure than provided by the drip feed value 56, or a spray of water for delicate fabrics.
Patent GB-174816-A (GB)
Title: Improved platform or staging for use in cleaning windows
IPC: A47L3/02
Filed: 1920-12-01
Abstract: 174,816. Holt, C., and Holt, M. Dec. 1, 1920. Staging, window.-In a window-cleaning platform comprising a staging A which extends from the inside of the window frame B and rests on the sill, the supporting-brackets a<2> are formed with concave parts a<3> to rest upon the edge of the sill B'. The brackets a<2> may be replaced by solid blocks, and may be adjusted longitudinally.
Patent GB-910168-A (GB)
Title: Pneumatic tires
IPC: B60C15/06
Filed: 1960-10-04
Abstract: 910,168. Pneumatic tyres. FIRESTONE TIRE & RUBBER CO. Oct. 4, 1960 [Dec. 29, 1959], No. 33970/60. Addition to 909,315. Class 144 (2). A tyre as in the parent Specification is provided with a single-ply 22, Fig. 3, or two cross-laid plies 43, 44, Fig. 6, each of rubber reinforced with oriented fibres f, disposed in each case either in the central, Fig. 3, or lower, Fig. 6, sidewall region to enhance the lateral stability of the tyre, in each case the ply or plies extending for 15 to 45% of the tyresection height. The fibres may be of the range of materials used for the corresponding tread plies or may be of metal. The direction of orientation of the fibres in ply 22 may be parallel to the cords of the carcase ply 11, i.e. radially of the tyre, and in the plies 43, 44 it may be between 30 and 60 degrees to the circumferential direction.
Patent GB-521615-A (GB)
Title: Improvements in and relating to electrical switches and contacts
IPC: H01H1/50
Filed: 1938-11-23
Abstract: 521,615. Switch contacts. OSBORN,-H. J., and OSBORN & SHARP, Ltd., H. J. Nov. 23, 1938, No. 34050. [Class 38 (v)] Interengaging electrical switch and like contacts are made from bimetallic strip so as to increase the contact pressure when heated under load. In the case of a knife switch 1, Fig. 1, the resilient contact 4 is formed of two metals a, b such as two different nickel-iron alloys so arranged that the surfaces 2, 3 approach one another when the temperature rises. Alternatively the blade contact may consist of a U-shaped member of bimetallic construction engaging between a pair of fixed blocks. Both of the co-operating contacts may be of the bimetallic construction, and in a bifurcated contact one half only need be so constructed. Both these modifications are shown in Fig. 6 where the outer contact consists of a bimetallic portion a, b and a plain copper &c. portion 4. The inner contact consists also of a bimetallic portion 6 and a plain portion 2. The bimetallic contact may be plated or faced with copper.
Patent GB-1210366-A (GB)
Title: Improvements in or relating to automatic gain control circuits
IPC: H03F3/343
Filed: 1969-07-07
Abstract: 1,210,366. Automatic gain control. SIE. MENS A.G. 7 July, 1969 [8 July, 1968], No. 34107/69. Heading H3T. A D.C. amplifier comprising transistors T 3 , T 4 , T 5  is provided with D.C. feedback over resistor R 4  and capacitor C 1 . In series with the load resistor R 2  of the first stage T 3  is the emitter to collector path of a further transistor T 2 ; this transistor is provided with a standing bias by means of resistor R 1 , and the gain of the amplifier is varied by variation of its base bias. This varies the current through transistor T 2 , tending to change the potential at the point b; as a result the D.C. negative feedback on the circuit changes the bias on transistor T 3  arid hence the current through it in such a manner as to restore the potential of point b to its original value. In this way the current through transistor T 3  and hence its gain is varied without appreciable variation in the working conditions of the transistors T 4 , T 5 . The bias on the transistor T 2  may be varied by means of a further transistor (T 1 , Fig. 3, not shown) having its emitter connected to earth and its collector connected to the base of transistor T 2  via a diode chain. Variation of the base bias of this further transistor controls the current in the transistor T 2 , the diodes setting a minimum value beyond which the gain of the amplifier remains constant; the variation of collector potential may be used to vary the gain of preceding stages, e.g. R.F. stages of a radio receiver in which the amplifier described constitutes the I.F. stage.
Patent GB-754323-A (GB)
Title: Improvements in or relating to ice trays
IPC: F25C1/246
Filed: 1954-11-25
Abstract: 754,323. Ice-trays. BOSCH GES., R. Nov. 25, 1954 [Nov. 26, 1953], No. 34138/54. Class 29. A flexible, e.g. polyethylene grid for an ice tray comprises two longitudinal walls 3, 4 and transverse walls 2, the removal of the blocks from the central spaces being facilitated by forming a slit 6 in one of the walls bounding each such space. As shown the slits are formed all in one longitudinal wall ; in a modification, the slits in the spaces are formed alternately in the walls 3, 4.
Patent GB-1424572-A (GB)
Title: 3,4-dihydrocarbostyril derivatives and their preparation
IPC: A61K31/47
Filed: 1973-01-22
Abstract: 1424572 3,4-Dihydrocarbostyril derivatives OTSUKA PHARMACEUTICAL CO Ltd 22 Jan 1973 [13 April 1972 (2) 14 Sept 1972 (3) 2 Dec 1972 21 Dec 1972] 34170/75 Divided out of 1424571 Heading C2C The invention comprises 3,4-dihydrocarbostyril derivatives of Formula (I) in which R<SP>1</SP> is hydrogen, a C 1 -C 4  alkyl group, an aralkyl group or a C 2 -C 4  alkenyl group and Z represents (a) or (b) -CHOH-CH 2 X where X is a halogen atom. They may be prepared by reacting a 5-, 6-, 7- or 8-hydroxy-3,4-dihydrocarbostyril derivative of Formula II with an epihalohydrin of Formula III in the presence of a basic compound. The compounds of Formula II may be prepared by reacting a 3,4,5,6,7,8-hexahydrocarbostyril-5- one of Formula VI with a brominating agent to get an 8- (or 6-) -bromo derivative and heating this to remove bromine and dehydrogenate the ring. The proportion of the two products having groups (a) and (b) obtained depends on the reaction conditions. The compounds in which Z is the group (b) may also be prepared by reacting a compound of Formula (VI) above with a compound of formula CH 2 OH.CHOH.CH 2 X (X is a halogen) in the presence of a brominating agent.
Patent GB-204602-A (GB)
Title: Improvements in or relating to combing machines
IPC: D01G19/16
Filed: 1922-12-15
Abstract: 204,602. Holmes, E. Dec. 15, 1922. Combing - machines. -The upper nipper 4 is hinged to the end of the arm 1 so that it can be turned up for the cleaning of the groove 4a. The nipper is held in the worlsing position by a catch 6.
Patent GB-364754-A (GB)
Title: Improvements in or relating to wireless receiving apparatus
IPC: H05K7/06
Filed: 1930-11-14
Abstract: 364,754. Wireless receiving apparatus; inductances. BIDDINGTON, T. A. and FIELD, R., 54, Union Street, Plymouth. Nov. 14, 1930, No. 34303. [Class 40 (v).] A self - contained high frequency unit comprises a former I with coil windings 3,2 and having associated therewith the necessary apparatus such as a tuning condenser 8, wave-range switch 4, high frequency choke 12, a screen-grid valve 14, and fixed condenser 13. The switch 4 short-circuits the long-wave winding 3 for the short-wave band and the short-wave winding 2 is divided into three sections with tapping terminals 5, 6 for the aerial connection to vary selectivity. The valve is mounted on a metal platform 10 and a transverse screen 15 is fitted at the end of the former. Wanderleads are provided for connection to batteries and the input terminals of a receiver.
Patent GB-1218429-A (GB)
Title: Improvements in or relating to spacers for overhead transmission lines
Inventor: TORR RALPH PERCIVAL
IPC: H02G7/12
Filed: 1968-07-18
Abstract: 1,218,429. Cable Spacers. ANDRE RUBBER CO. Ltd. 22 Sept., 1969 [18 July, 1968], No. 34368/68. Addition to 1,190,807. Heading H2C. A spacer of the type disclosed in the parent Specification and having four spacer arms is modified by having the two cavities 10 at each end of the link arm equally spaced and offset from the midpoint of the link arm 3. Each end of the link arm is formed as a flat support plate 5 and the cavities therein are defined by depressions 10<SP>1</SP> registering with depressions 10<SP>11</SP> on cover-plates 12. The support and coverplates have at the periphery of each depression an expansion space for receiving extruded bush material during assembly of the two plates. Spacer knobs 8 have tail portions extending through apertures 14 in cover-plates 12 and have fitted thereon a washer 15 of larger diameter than aperture 14. Openings 13 in the support plate have a diameter larger than the knob diameter.
Patent GB-500827-A (GB)
Title: Improvements in or relating to packages for spectacle frames
IPC: B65D73/00
Filed: 1937-12-13
Abstract: 500,827. Displaying spectacles. COULDEN, A. P., and FLEMING, Ltd., J. & R. Dec. 13, 1937, No. 34427. [Class 3 (ii)] [Also in Group XVII] A mount for spectacle frames comprises a blank 10 perforated or weakened at 11, 12 to allow the parts 13, 14 to be bent up at rightangles and provided with a central aperture 15 to accommodate the bridge and nosepiece. Apertures 16, 17 permit the passage of the side pieces so that they may be folded down on the back of the card. The sides 13, 14 are shorter than the base 10. After the spectacle frame has been placed in position, the whole is'enveloped in a transparent tubular cover 18 coterminous with the sides 13, 14. The end portions are then free for engagement with slits in the sides of a cabinet in which the packages may be stored.
Patent GB-178157-A (GB)
Title: Improvements in and relating to the distillation of solid hydrocarboncontaining materials
IPC: C10B1/10
Filed: 1920-12-07
Abstract: 178,157. Knibbs, N. V. S. Dec. 7, 1920. Coking processes; retorts. - Coal, shale, lignite &c. are distilled in inclined rotating retorts by direct contact with the combustion gases obtained by burning within the chamber the less volatile or non volatile residues produced during the distillation, with or without additional heat from an external source. Screened material is fed into a hopper 1 and is delivered bv the worm 2 into the retort 3 which is supported on rollers 4 and is driven by means of the gear 5. To prevent excessive heating, and to increase the yield of ammonia, air, neutral gas, water, or steam, or any desired mixture, may be introduced into the lower end of the retort by a fan 6 through the pipe 7. The draught is regulated so that the distillation zone occupies about one-half the length of the retort nearer the hopper 1. In this zone the material is pre-heated by the combustion gases, the air supply being controlled to prevent the presence of any free oxygen. In the second zone, about one-quarter of the length of the retort, the non-volatile or less volatile carbon-containing residues are burnt, whilst in the final zone the mineral residues are cooled by the incoming air, which is thereby heated. The inorganic residues fall into the pit 8 and are removed by an elevator 9. The pressure and temperature conditions may be modified to vary the character of the distillate. According to the Provisional Specification the less volatile or non-volatile carbon-containing residues, instead of being burnt in the distillation chamber, may be discharged from that chamber into a separate combustion chamber, such as a gas-producer, there to be more or less completely burnt in order to produce the hot gases necessary for carrying out the distillation of the hydro-carbon-containing material in the rotating treatment chamber.
Patent GB-1478669-A (GB)
Title: Sliding clasp fastener
IPC: A44B19/14
Filed: 1974-08-06
Abstract: 1478669 Sliding clasp fasteners OPTI PATENT-FORSCHUNGS-UND FABRIKATIONS AG 6 Aug 1974 [10 Aug 1973 16 Nov 1973 28 March 1974] 34561/74 Heading E2S A sliding clasp fastener comprises two rows of fastener elements 2 each element having a coupling head 2 and a narrow neck 3 and the elements of each-row being interconnected by a connecting strip 4, the coupling heads 2 being inclined with respect to the plane of the fastener, and tongues 5 integral with each connecting strip and lying between the fastener elements, the tongues of one row overlapping the fastener elements of the other row when the two rows of fastener elements are coupled together to block relative movement of the two rows in a direction perpendicular to the plane of the fastener. Two rows 1 of fastener elements are formed by feeding a strip of synthetic plastics material between a pair of cutting tools, e.g. a pair of cutting rolls, not shown, to provide a series of oblique and arcuate cuts 6, Fig. 4, the strip being separated to provide two individual strips 1 without waste of material. The cuts 6 on one, and respectively the same, side of the locking tongues 5 are longer than the other side, Fig. 7, and Figs. 8-15 not shown, so that the fastening elements 1 deflect along lines oblique to the longitudinal axis of the fastener. The semi-circular cuts 6, Fig. 7, are extended at 6a to minimise the development of cracks during coupling and uncoupling of the elements. The connecting strip 4 may be sufficiently wide to act also as a main support strip.
Patent GB-619032-A (GB)
Title: Improvements in vertical tube gas coolers or condensers
IPC: F28D3/02
Filed: 1946-11-22
Abstract: 619,032. Surface condensers. HOLMES & CO., Ltd., W.C., THOMPSON, R. J. S., HENSHAW, D. M., and COOPER, C. Nov. 22, 1946, No. 34632, Addition to 594,754. [Class 64(iii)] [Also in Groups XII and XXVIII] The apparatus o the parent Specifica tion is modified in that the upwardly directed jets of liquid irrigating the uppe: tube plate 10 of a vertical tube conden ser are supplied through nozzles 13 arranged along vessels 12 extending between the tubes of the condenser. The vessels 12 may either be fitted between each row of tubes or between every other pair of rows in which latter case the number of nozzles 13 is doubled on each vessel 12.
Patent GB-1442319-A (GB)
Title: Glass toughening mthods
IPC: C03B27/00
Filed: 1973-07-20
Abstract: 1442319 Tempering glass sheets TRIPLEX SAFETY GLASS CO Ltd 11 July 1974 [20 July 1973] 34706/73 Heading C1M A method of tempering glass sheets in which the edge of the sheet which first contacts the quenching medium is heated to a higher temperature than the opposite trailing edge of the sheet. As shown after bending a sheet passes through a zone heated by electric resistance elements 27. When the leading edge of the sheet has reached the bottom of the zone the sheet is acclerated thereby producing a temperature gradient between the trailing and leading edges. Preferably the temperatures are 680 and 700 C. respectively. After heating the sheets pass into quenching oil contained in a tank 26.
Patent GB-1000056-A (GB)
Title: Improvements in or relating to circuit arrangements for modifying alternating voltages
IPC: H03K5/12
Filed: 1963-09-03
Abstract: 1,000,056. Pulse circuits. PHILIPS ELECTRONICS & ASSOCIATED INDUSTRIES Ltd. Sept. 3, 1963 [Sept. 6, 1962], No. 34793/63. Headings H3P and H3T. A circuit for generating pulses from a sine wave comprises a two-stage negative feedback amplifier feeding a series circuit consisting of a capacitor and a rectifier in such a way that the amplitude or rate of change of at least parts of the output waveform is independent of frequency. As shown, the negative feedback via resistor 3 is reduced during part of each cycle by capacitor 8 charging via rectifier 7. The collector current thus exhibits a spaced sawtooth waveform, the slope of the trailing edge of which is independent of frequency. The collector current is differentiated by inductor 10 to form a short duration pulse the amplitude of which is substantially independent of frequency over range 0À5-25 mc/s. The bias of transistor 1 is stabilized by a forwardbiased diode or a Zener diode 4. The transistors may be replaeed by valves.
Patent GB-854560-A (GB)
Title: Process for preserving living plant materials
IPC: A23B7/154
Filed: 1958-10-30
Abstract: Resistance to deterioration of plant materials such as fresh fruits, vegetables and ornamental foliage is increased by treating them with an adenine derivative of the structural formula:  <FORM:0854560/VI/1> wherein R is an aryl, aralykl, or heterocyclic group.  Preferred derivatives are N6-benzyladenine, N6-1-naphthyladenine, N6-furfuryladenine and N6-phenyladenine.  The plant materials may be sprayed prior to packing or shortly before harvesting with an aqueous solution having a concentration of 1 to 5 parts per million of the adenine derivative.  Examples are directed to the preservation of mustard greens, lettuce and the green tops of radishes.