baber/WOPTO huggingface dataset:
Patent GB-360765-A (GB)
Title: Process for the production of calcium carbide and phosphorus
IPC: C01B32/942
Filed: 1931-02-05
Abstract: Tertiary calcium phosphate is reduced with carbon to lime and phosphorus under such conditions that carbide formation is avoided and the reaction product, if necessary with the addition of further carbon, is then converted into calcium carbide at the temperatures usually employed for that purpose.  The first stage of the process may be carried out at 1200-1600 DEG  C.; in the presence of carbon monoxide at partial pressures above the known equilibrium pressures for carbide formaton temperatures above 1600 DEG  C. (up to about 1750 DEG  C.) may be employed.  The two stages may be effected in the upper and lower parts of the same furnace. The calcium carbide thus obtained, being free from phosphorus, can be converted into calcium cyanamide.
Patent GB-1477605-A (GB)
Title: Sampling of fluids
IPC: B01L3/02
Filed: 1975-01-29
Abstract: 1477605 Pipette SOC DES VERRERIES INDUSTRIELLES REUNIES DU LOING 29 Jan 1975 [29 Jan 1974] 3873/75 Heading BIX [Also in Division G1] A method of filling to a predetermined level a liquid sampling tube open at both ends with one end dipped into the liquid to be sampled while the other end is subjected to a suction effect to cause the liquid to rise in the said tube, said predetermined level being defined by a porous diaphragm such that its base is flush with the said predetermined level, the said diaphragm being constituted of a compressible absorbent material of open porosity over the whole height of the diaphragm in order to allow passage of air therethrough under the said suction effect until the pores of the diaphragm are occluded by engagement of liquid having reached the said level, whereby progression of the liquid column along the said tube stops at said level irrespective of protracted suction. The plug may be of vegetable or synthetic sponge, cotton, cellulose, balsa wood, or rolled or twisted paper. Pipettes so plugged may be used in the determination of sedimentation rate e.g. of blood. Reference has been directed by the comptroller to Specification 1414487.
Patent GB-862302-A (GB)
Title: Pocket lamp with built-in mains battery charger
IPC: F21L4/00
Filed: 1958-02-06
Abstract: 862,302. Charging batteries. LICENTIA PATENT VERZWALTUNGS G.m.b.H. Feb. G. 1958 [Feb. 11, 1957], No. 3914/58. Class 38 (4). A pocket lamp having a built-in mains battery charger consists of a battery portion 1 having plug pins 2 on one end face and a bulb-holding portion 3 carried by the plug pins, the bulb 5 being loosely inserted from the inside into a sleeve-like opening 6 in the bulb portion and projecting into the battery portion to an extent sufficient for the tip 7 and threaded socket to make contact with springs 8, 9 connected to the battery. The bulb 5 may be of the type having a lens 4 sealed into the glass portion. The bulb portion carries a pair of springs 10 which engage in corresponding grooves 11 in the pins 2. The bulb-holding aperture may be flared towards the outer end to form a reflector.
Patent GB-524787-A (GB)
Title: Improvements in and relating to machines for decorticating or de-seeding flax and hemp stalks
IPC: D01B1/12
Filed: 1939-02-07
Abstract: 524,787. De-seeding and cleaning flax stalks &c. FREUDENBERG, R. Feb. 7, 1939, No. 4069. Convention date, Feb. 9, 1938. [Class 120 (i)] In a machine for de-seeding or decorticating flax or hemp stalks and having comb-like scrapers which are moved transversely to the direction in which the stalks are conveyed, the scrapers are mounted in bearings which are moved in a circular path and are provided with cranks which are moved in the same sense and with the same velocity as the bearings for the combs in a circular controlling path which is displaced by the amount of the eccentricity of the cranks relatively to the centre of the circular path of the bearings. In one form, Fig. 1, a shaft 1 mounted in bearings 2, 3 carries two discs 5 while an eccentric 11 on which runs a disc 10 can be adjustably fixed to the bearing 3. The cranks 6 which are fixed to the supporting arms 8 for the decorticating combs or prongs 9 are revolubly mounted on the disc 10 and when the discs 5 are driven by the shaft 1 the cranks 6 serve to maintain the angular position of the prongs 9. In a modification, Fig. 3, the eccentric 11 is fixed to the shaft 1 which does not rotate. The discs 5 and the disc 10 rotate respectively on the shaft 1 and on the eccentric 11 and are driven by toothed wheels from a counter shaft. The arms 8 are provided with crank-pins 6 which are revolubly mounted in the disc 10. The angular inclination of the combs 9 is adjusted by rotating one of the toothed wheels relatively to the others. Specification 485,810 is referred to.
Patent GB-493741-A (GB)
Title: Improved method of joining metals together by electric resistance welding
IPC: B23K11/18
Filed: 1938-02-09
Abstract: 493,741. Electric welding. BRITISH THOMSON-HOUSTON CO., Ltd. Feb. 9, 1938, Nos. 4097 and 4098. Convention dates, Feb. 9, 1937 and Oct. 22, 1937. [Class 83 (iv)] In a method for the electric-resistance welding of metals which, owing to their inherent properties, are difficult to weld directly together by such process, an intermediate member of a metal having a higher specific resistance than that of the parts and capable of interfusing or alloying therewith is placed between the parts prior to welding. This member, which preferably has a resistance three times as great as that of the metal of the work parts, is heated more rapidly than the work so that the heat is first concentrated therein and is then given up at the welding points. Molybdenum plates 1, 2 may be spotwelded together by inserting a strip 3 of tantalum between the plates. The Specification as open to inspection under Sect. 91 states that the process is also applicable to the welding of metals which are normally capable of being strongly welded. This subjectmatter does not appear in the Specification as accepted.
Patent GB-1155765-A (GB)
Title: Audio Frequency Generator
IPC: H04M1/50
Filed: 1967-01-27
Abstract: 1,155,765. Key-controlled tone generators; transistor oscillating circuits. INTERNATIONAL STANDARD ELECTRIC CORP. 27 Jan., 1967 [28 Jan., 1966], No. 4167/67. Headings H3T and H4K. In a subscriber's keyset for multi-frequency dialling, depression of a key selects an inductance tap in one LC circuit and alters the connection of a pair of capacitors in the other LC circuit of a dual-frequency oscillator. The arrangement is such that if two keys are depressed simultaneously (in error) two simultaneous tone frequencies are still produced. As shown a transistor oscillator has two LC feedback paths comprising inductance U1 and capacitors C1 and C2, and inductance U2 and capacitor C3 respectively. Twelve keys each operate corresponding make contacts and break contacts T1 to T12. The keys and associated contacts are arranged in'three groups T1-4-7-11, T2-5-8-10 and T3-6-9-12. Operation of a key in the first group connects through its break contacts both capacitors C1 and C2 in parallel with a series pair of windings II and III of the inductance U1 while operation of a key in another group connects one or both capacitors C1 and C2 in parallel with the winding III of the inductance. The contacts of the depressed key select a tap on the inductance U2 thus both frequencies are changed.
Patent GB-1528711-A (GB)
Title: Process for preparing a semi-permeable membrane
IPC: B01D71/68
Filed: 1977-02-02
Abstract: 1528711 Porous cross-linked polysulphone membranes SUMITOMO CHEMICAL CO Ltd 2 Feb 1977 [2 Feb 1976] 4175/77 Heading C3C [Also in Divisions Bl and B5] A heterogeneous membrane of a polysulphone has a cross-linked dense layer in the vicinity solely of a first surface and pores increasing gradually in size towards an opposite surface of the membrane. The polysulphone may have the following  as repeating units. The cross-linked dense layer may have a thickness not more than 1 Á. The membrane may have a thickness of 20-500 Á and pores of diameter 100-1000  in the layer adjacent the cross-linked dense area, the size of the pores gradually increasing to 1-100 Á towards the opposite surface of the membrane. The membrane is prepared by exposing a porous article, a polysulphone, e.g. produced by casting, to a plasma generated by glow or corona discharge. The membrane produced is useful as a semi-permeable membrane in ultrafiltration or reverse osmosis.
Patent GB-534515-A (GB)
Title: Improvements relating to high pressure fluid medium distribution system
IPC: A62C99/00
Filed: 1940-03-06
Abstract: 534,515. Fire extinguishing apparatus; valves. KIDDE & CO., Inc., W. March 6, 1940, No. 4222. Convention date, March 13, 1939. [Class 47 (ii)] [Also in Group XXIX] A fire extinguishing system employing liquid CO 2  is furnished with air escape valves normally open but responsive to a fall in temperature whereby they are closed as soon as the air has escaped. As shown, the pipe line 3a, supplied with liquid CO 2  from a source 1a, has an outlet 4a and is furnished with air escape valves 5a. As shown in Fig. 3 the valve stem 13 is carried by a bellows 11 which contract to close the valve when the liquid CO 2  reaches them.
Patent GB-346087-A (GB)
Title: Improvements in the construction of mechanism for opening sheets
IPC: B21B47/04
Filed: 1930-02-07
Abstract: 346,087. Separating sheets in pack rolling. EDWARDS, R., Martins Ferry, Ohio, U.S.A. Feb. 7, 1930, No. 4258. [Class 83 (iv).] In a machine for separating sheets after pack rolling, a pair of driven rolls 1 and 2 are slidably housed in a frame 5, with the top roll 1 vertically adjustable by screws 6 and handle 13. Intermediate idle rolls 14, mounted in blocks 15, slidable in the frame 5, are arranged so that their axes lie in the same vertical plane as those of the driven rolls. Another roll 16 loosely mounted in the blocks 15 guides the plates to be separated and exerts a wedge action upon them as they are drawn through the rolls. Plates 17 . . 20 guide the sheets as they pass towards and away from the rolls.
Patent GB-254627-A (GB)
Title: Improvements in planers
IPC: B23Q1/28
Filed: 1926-02-15
Abstract: 254,627. Kandera, J. Feb. 15, 1926. Planing. - In a rotary planing attachment for smoothing the cutting blocks of a leather-cutting or like machine, the planing cutter is driven by an electromotor 31, the casing of which has a bearing sleeve 30 which screws into the lower of two jaws 22, 23, by means of which the attachment is clamped on a rail 10 which is fixed when required to a ledge 15 on the tool support 16 of the machine. Teeth 34 on the sleeve 30 are engaged by the teeth of a pinion 35 mounted in the upper jaw 22 and rotated by means of a handle 37 to fix or release the jaws. The blades 43 of the cutter are fixed by screws 42 at the ends of a cross member 38 and can be adjusted to present any one of four separate cutting edges.
Patent GB-537636-A (GB)
Title: Improvements relating to joint boxes for connecting and disconnecting electric cables
IPC: H02B1/00
Filed: 1940-03-08
Abstract: 537,636. Junction boxes. CALLENDER'S CABLE & CONSTRUCTION CO., Ltd., MOOR, F., and HOGG, F. C. March 8, 1940, No. 4365. [Class 38 (i)] A junction box of the type having bus-bars 8 adapted to be connected by removable fuses or links to cable terminals 15, have the bus-bars and terminals supported on insulating blocks 11 mounted on pillars 10. The bus-bars are fitted between the blocks and notches in both bars and blocks interengage to prevent movement in either direction. The terminals fit into notches in the outer sides of the blocks and are secured by screws 16.
Patent GB-136039-A (GB)
Title: Improvement in Table Forks.
Inventor: BIGELOW HENRY JONATHAN
IPC: A47G21/02
Filed: 1919-02-21
Abstract: 136,039. Bigelow, H. J. Feb. 21, 1919. Table knives and forks. - The outer edge of one or both of the marginal tines c of a table fork is sharpened for about two-thirds of its length to form a cutting-edge 12, which may, as shown, be provided with cross-cuts 14 forming teeth. The points of the tines are left rounded.
Patent GB-572537-A (GB)
Title: Improvements in or connected with the cementing together of optical parts
IPC: G02B1/00
Filed: 1940-03-09
Abstract: 572,537. Sealing compositions. BARR & STROUD, Ltd., and FRENCH, J. W. March 9, 1940, No. 4440. [Class 95] [Also in Group VIII] Prism combinations for optical instruments are made by interposing between the elements a thin sheet of transparent flexible material, e.g, cellulose acetate or synthetic resin wire is rendered adherent by softening with a solvent or by heat or by treatment with an adhesive. The prism surfaces may also be treated with the insolvent. The joint may be sealed with a composition comprising asphaltum, gum dammar, gas black and solvent naphtha.
Patent GB-414158-A (GB)
Title: Improvements in cases or cabinets for cigarettes and the like
IPC: A24F15/06
Filed: 1933-02-14
Abstract: 414,158. Cases; cabinets. SPINK, J. R., Westbury Works, Westbury Road, Walthamstow, London. Feb. 14, 1933, No. 4526. [Class 18.] A case or cabinet for cigarettes &c. has two or more boxes forming wells for the cigarettes pivotally mounted in the sides of the case &c. so as to be movable out from the side thereof in a vertical plane, by a vertical sliding rod centrally mounted in the case and coupled to the boxes. As shown, the boxes b are loosely fulcrummed on the edges c of the openings in the sides of the case and are held in the closed position by spring d or by elastic or weights, the rod g is fitted with a knob h by which it can be lifted to cause a plate k on the rod to engage the inner bottom edges of the boxes and move them to the open position. The rod may be connected to the boxes by slotted arms and studs or it may be connected by toggles or levers so that it is depressed to open the boxes. The boxes may be partitioned and the case &c. may be made from artificial resin.
Patent GB-1430697-A (GB)
Title: Pulverizable acrylic resins
IPC: C08F220/04
Filed: 1974-01-31
Abstract: 1430697 Acrylic polymers BAYER AG 31 Jan 1974 [1 Feb 1973] 04535/74 Heading C3P Pulverizable acrylic resins are obtaining by forming a solvent-free mixture of (1) 0-55% (mol.) of styrene, alpha-methyl styrene or methyl methacrylate, (2) 10-25% of acrylic or methacrylic acid (3) 0-70% of a C 2 -C 18  alkyl methacrylate and (4) 20-50% of a C 1 - C 18  alkyl acrylate, continuously polymerizing in a first zone with agitation at 100-150 C. in the presence of 0À1-1% (wt.) of an initiator having a half life of less than 10 minutes at 100 C. till 35-60% conversion is reached, continuously withdrawing reaction medium and polymerizing in a second zone, which is a continuous plug flow reactor preventing backmixing or a discontinuous batch reactor, at 130-170 C. in the presence of 0À1-1% of an initiator having a half life of more than 10 minutes at 100 C. to at least 94% conversion. The products have a molecular weight of 500- 10,000, a glass transition temperature of 40-70 C. and an acid number of 55-120 mg. KOH/g.
Patent GB-392304-A (GB)
Title: Improvements relating to lids or covers for bins, pans, or containers
IPC: A47J36/12
Filed: 1932-02-16
Abstract: 392,304. Dustbin &c. lids. NIGHTINGALE, W. A., 19, Danvers Road, Hornsey, and HARVEY & CO. (LONDON), Ltd., G. A., Woolwich Road, Charlton, both in London. Feb. 16, 1932, No. 4600. [Class 66.] The underside of the lid 3 of a dustbin or like container is furnished centrally with a project. ing stop or supporting member adapted to engage the edge of the bin and support the lid thereon when it is moved aside in any direction. The supporting member may be a spider comprising outwardly-directed hooks 5 formed from metal strips, as shown in Fig. 1, or may assume such forms as the double cone 6, 7 shown in Fig. 2, the cone 10 shown in Fig. 4, or the spring-supported plate 12 shown in Fig. 5, but is in all cases contained within the lid and does not project below the rim thereof.
Patent GB-428714-A (GB)
Title: Improvements in and relating to the production of plates and other moulded bodies from fibrous materials
IPC: D21J1/08
Filed: 1934-02-15
Abstract: 428,714. Preparation of cellulosic fibrous material for making boards &c. POLLAK, J. E., 20, Holborn, London.- (Gewerkschaft Aufbau; 18, Dusseldorferstrasse, Duisburg, Germany) Feb. 15, 1934, No. 4602. [A Specification was laid open to inspection under Sect. 91 of the Acts, Aug. 20, 1934.] [Class 96] Plates, moulded articles, &c. of high rigidity and strength and with a high volume of interstices, for building, and sound, heat, and electrical insulation are made from fibres of straw &c. boiled with alkali metal monosulphites with or without alkali metal silicates or caustic alkalies, to which straw &c. may be added mechanically prepared fibrous material, e.g. rolled straw, coarse wood pulp, &c.
Patent GB-1165411-A (GB)
Title: A Method and Apparatus for Stranding Elongate Elements together
IPC: H01B13/02
Filed: 1967-01-31
Abstract: 1,165,411. Stranding cables. SIEMENS A.G. 31 Jan., 1967 [31 Jan., 1966 (2)], No. 4756/67. Heading H1A. [Also in Division D1] Communication cables are stranded together with periodic change in the direction of twist. Cores are fed into a stranding machine at 14, pass around roller 7 of a rotating sub-frame 2, pass around a temporary storage drum 9 that is free to rotate about its vertical axis but does not rotate with the subframe 2, leave the sub-frame and pass around rollers 8 of a second sub-frame 3 and leave the sub-frame 3 at 4 for winding. In use, and with sub-frames 2 and 3 rotating in one direction, the cores have a degree of twist imparted to them at 14 and a second degree of twist in the same direction imparted to them at 11, where they are fed to the store 9. When the store is full the direction of rotation of the sub-frames is reversed and the cores leaving the store 9 at 10 have a third degree of twist imparted to them, in the same direction as the first two degrees of twist and, as the cores leave the sub-frame 3 at 4, a fourth degree of twist is imparted to them. They are then wound on a reel. During the winding off the store 9 of the first length of cores a second length is wound on to the store with a change in direction of twist due to the reversal of rotation of the subframes and, when the store is again full, the direction of rotation of the sub-frames is again reversed so that, as the second length leaves the store, it is provided with the third and fourth degrees of twist in the same direction as its first two degrees and in the opposite direction to the direction of twist of the first length whilst a third length of cores, being wound on to the store, is receiving its first two degrees of twist in the same direction of twist as the first length. Instead of the direction of rotation of the subframes being reversed their speed of rotation may be changed. Various embodiments of temporary stores and sub-frames are described. Four such assemblies may be utilized (Fig. 4) to cable four strands 40 by way of a fifth assembly 43.
Patent GB-360768-A (GB)
Title: Improvements in or relating to rail-contact apparatus
IPC: B61L1/04
Filed: 1931-02-14
Abstract: 360,768. Track apparatus actuating signals other than on trains. JACKSON, L. MELLERSH-, 28, Southampton Buildings, London.-(Vereinigte Eisenbahn-Signalwerke G e s.; Siemensstadt, Berlin.) Feb. 14, 1931, No. 4758. [Class 105]. A treadle device more particularly for use in connection with axle counting apparatus comprises a plurality of leaf springs 1 .. 4, arranged transversely to the rail, each of which when depressed by a train wheel withdraws a stud thereon to permit a contact spring 7 to engage a fixed contact 8 with uniform pressure and thereby actuate a relay 6.
Patent GB-349567-A (GB)
Title: Improvements relating to evaporation systems
IPC: B01D1/14
Filed: 1930-02-13
Abstract: <PICT:0349567/III/1> <PICT:0349567/III/2> The hot gases and vapours evolved from submerged flame evaporators are made suitable for heating purposes by (1) separating off the gaseous constituents, or (2) passing the vapours and gases through a thoroughfare evaporator, i.e. one in which the vapours and gases flow quickly through the calandria tubes so that they do not become gas bound.  The gases may be separated from the condensible constituents by passing the products evolved from an evaporator 1 into a separator 2 provided with a diffusion diaphragm 3 which allows the gases to pass through and escape by a pipe 4 but retains the vapours which are led off through a pipe 5.  Alternatively the products evolved are passed through a preheater 6 where they preheat the liquid to be evaporated in the still 1, most of the gases escaping through a pipe 8 while some of the vapours are condensed, while the residual mixture is passed through a pipe 10 to heat the separate heater and evaporator apparatus 9, 11.  The condensate from the heaters 6, 9 is led through a pipe 16 to serve as make-up.  In a modification products of combustion are passed direct to a thoroughfare evaporator and the uncondensed residue is used to heat the preheater 6.
Patent GB-731475-A (GB)
Title: Improvements in or relating to envelopes for gramophone records
IPC: B65D85/57
Filed: 1953-02-23
Abstract: 731,475. Gramophone-record envelopes. LINGUAPHONE INSTITUTE, Ltd., and RIDZ, A. S. Oct. 14, 1953 [Feb. 23, 1953], No. 4957/53. Class 146(2). A gramophone record envelope, open at one end and closed at the opposite end, has a slit 7 located substantially midway along each of the two side edges. As shown, the envelope is formed from a single sheet folded to form front and back surfaces, spaced flaps 4, 5 on one surface being folded over and secured to the other surface to leave slits 7 at the edges between the flanges. Central openings 3 are provided, and the edges 6 of the flaps preferably cut at an angle so that the envelopes can be stored flat in stocks. Preferably the length of slits 7 is substantially equal to the diameter of opening 3.
Patent GB-348207-A (GB)
IPC: C10B39/04
Filed: 1930-02-14
Abstract: 348,207. Cooling coke ; producer plant. NAAMLOOZE VENNOOTSCHAP SILICA EN OVENBOUW MIJ., 17, Raamweg, The Hague.-(Assignees of Otto & Co., Ges., Dr. C. ; 9, Christstrasse, Bochum, Germany.) Feb. 14, 1930, No. 5031. Convention date, Feb. 14, 1929. [Classes 51 (ii) and 55 (i).] In the process of cooling coke by passing steam or water into the hot coke column, the water gas produced on leaving the cooling chamber a, is passed through a laterally connected chamber k containing a reducing-agent e.g. small coke, maintained by indirect heating at a temperature high enough to ensure the conversion of all C0<2> into CO. The small coke may be screenings from the coke oven discharge, and it either passes eventually into the cooling chambers, or is led away separately. The chamber k is heated by wall flues.