baber/WOPTO huggingface dataset:
Patent GB-390863-A (GB)
Title: Improvements in the recovery of ethylene
IPC: C07C7/11
Filed: 1931-10-13
Abstract: Ethylene is recovered from gases rich in ethylene and containing also propylene and/or other olefines, especially cracking still gases, by washing the gases with a mineral oil fraction approximating to kerosene and substantially all boiling above 200 DEG  C. at ordinary pressure, the propylene and higher olefines being absorbed, while the ethylene remains undissolved. The washing may be effected at normal pressure, but is preferably effected at pressures above 10 atmospheres.  The dissolved gases may subsequently be liberated from the kerosene by heating and/or reduction of pressure in stages, the resulting gas fraction or fractions poor in propylene being returned to the washing step, preferably to the appropriate stage of the multi-stage compressor when such is used, while the fraction or fractions rich in propylene are collected separately for the recovery of propylene therefrom.  According to an example, cracking still gases are washed at 22 DEG  C. with kerosene boiling between 200 and 300 DEG  C. in countercurrent, in an unpacked tower 2 inches in diameter and 12 feet high.  The gases are compressed before scrubbing to a pressure of 21 atmospheres, and the gases dissolved in the kerosene subsequently liberated in two stages by reduction of pressure, first to 7 atmospheres, then to atmospheric pressure. The ethylene and propylene obtained may be used for the manufacture of derivatives such as ethyl alcohol or ethylene glycol in known manner. The gas recovered from the kerosene may be used for the production of propylene and ethylene derivatives, or it may be treated according to Specification 374,510 for the production of additional ethyl alcohol. Specifications 106,080, 248,375, and 273,781, [all in Class 2 (iii), Dyes &c.], also are referred to.  According to the Provisional Specification the initial gases may be subjected to a preliminary washing with ammoniacal cuprous formate, acetate, carbonate, or the like in order to concentrate the olefines.  Cracking still gases may first be purified from sulphur at atmospheric pressure, for example, by means of an alkaline solution or suspension of ferric oxide or hydroxide, and preferably also from acetylene by washing with water. The gas is then compressed to 20 atmospheres and washed with ammoniacal copper formate.  The gas obtained from the used formate on release of pressure and heating to about 65 DEG  C. is compressed to about 60 atmospheres, and then washed with kerosene.
Patent GB-1397894-A (GB)
Title: Heat exchangers
IPC: F28F9/18
Filed: 1973-06-14
Abstract: 1397894 Tubular heat exchangers PRVNI BRNENSKA STROJIRNA OBOROVY PODNIK 14 June 1973 28464/73 Heading F4S In a double-walled tube plate assembly comprising a relatively thin plate member 1 bearing against a thick plate member 3 via projections 2, the plate member 1 is suitably recessed in the region around each tube passing therethrough to define a space 5 for the detection and collection of leakage fluid. The plate members 1 and 3 are welded together by a circumferential weld. The tube plate assembly is particularly for use in nuclear plant installations where the heat exchange media are molten metal and steam.
Patent GB-1521991-A (GB)
Title: Method and mechanism for determining forces on a solidifying continuous casting
IPC: B22D11/20
Filed: 1975-07-08
Abstract: 1521991 Nip roller assemblies USS ENGS & CONSULTANTS Inc 8 July 1975 [12 July 1974] 28756/75 Heading B8A [Also in Division B3] Load cells 57 are mounted on supports of roller pairs 26, 27 of idler rollers of a roller guideway to measure the compressive force exerted by each pair of rollers on a guided cast strand. By comparing the measurements, the plane of complete solidification and/or the position of incorrectly gapped pairs of rollers are(is) said to be determined. By the use of shims 60 the gaps can be adjusted.  The arrangement is like that of Specification 1,414,342 wherein stepped keys are used to hold and adjust the spacing between clusters of two rolls at opposed faces of a strand. The load cells 57 and their holders 50 replace the stepped keys. In the event of overload the cells are crushed and damage to the guideway structure is avoided.
Patent GB-323757-A (GB)
Title: Improvements in and relating to initial or design holders for use on handbags, purses and the like
IPC: G09F3/06
Filed: 1928-10-08
Abstract: 323,757. Carter, L. H. Oct. 8, 1928. Ornamenting.- An initial or design holder for use on handbags, purses, buttons, &c. comprises a metal or other frame in which is fitted a piece of material having on its exposed face the initial &c., the frame consisting of a shallow body having an inwardly directed upper flange, and lugs &c. projecting from its outer edge, which are bent inwards and engage against the rear face of the artic1e to which the holder is attached. Fig. 3 shows a form attached to a press button, the material 2 on which the initial is marked being placed over the button 1 and enclosed by the frame 3 having an upper f1ange 3a and inward1y-directed projections 6 engaging behind the button ; a sheet of celluloid 7 covers the material 2. In another form, the projections 10, Fig. 7, are passed through the material of the article 11 and bent inwards. The device may be circular, square, polygonal, &c.
Patent GB-1171255-A (GB)
Title: Sulfur Encapsulated Fertilizer Pellets
IPC: C05G3/00
Filed: 1968-06-17
Abstract: 1,171,255. Coated urea. THIOKOL CHEMICAL CORP. 17 June, 1968 [24 July, 1967], No. 28828/68. Heading C2C. [Also in Division C1] Urea is coated successively with 0À2-3% of a powder and 5-14% of molten sulphur. It may be further coated with 0À1-5% of a hydrophobic sealant. The total amount of the coating (based on fertilizer) is less than 16%. The powder has a particle size of less than 2À5Á and a roughness factor of at least 1À1. It may be carbon black; zinc borate, carbonate, chromate, or sulphide; lead borate; magnesium hydroxide or silicate; aluminium oxide or hydroxide; antimony pentoxide; potassium sulphate; calcium fluoride; sodium tartrate; tin oxalate; thiourea; or verdigris. The sulphur may contain up to 10% of sulphur-styrene copolymer, bis-(2-chloroethyl) formal, dicyclopentadiene, or ethyl hexyl acrylate. The sealant may be petroleum oil or wax, polyethylene, polypropylene, or polyvinyl acetate. The fertilizer may be in the form of spheroids, prills, granules, or pellets. The coatings may be effected in one or more rotary drums at a temperature of 80-120 C. The sulphur may be applied as an atomized spray using nitrogen.
Patent GB-1357618-A (GB)
Title: Frequency control circuits
IPC: H03L7/10
Filed: 1971-06-21
Abstract: 1357618 APC systems SIEMENS-ALBIS AG 21 June 1971 [10 July 1970] 28915/71 Heading H3A A transceiver circuit for a distance measuring system comprises a controllable oscillator 8, a mixer 10 for producing the difference frequency fD between the output of oscillator 8 and the output of a corresponding oscillator in an associated transceiver received at 9 and having a given offset frequency a phase comparing equivalence gate 1 to which the difference signal fD and a reference signal fB are applied, a lowpass filter 4 for providing a sweep voltage to oscillator 8 when the difference frequency fD lies within the pass-band of a filter 12 and enables a filter capacitor 3 to charge up by opening a shunt switch 17, a current source U1, 6, an OR gate 5 for initially passing a bias voltage U2 to set the oscillator 8 between its normal and desired frequencies fl, f2, and for subsequently passing the sweep voltage across capacitor 3 when it exceeds in magnitude U2. A particular transceiver may be used as a main or a subsidiary transceiver by respectively opening or closing of a switch 15. In the closed state, an error signal dependent on the actual and desired frequencies of oscillator 8 is used to charge capacitor 3 for sweeping the oscillator towards the desired frequency f2. The capacitor 3 is also charged by the current source U1, 6 to ensure that the oscillator does not lock on to an incorrect frequency.
Patent GB-677408-A (GB)
Title: Plasticizing rubber
IPC: C08K5/36
Filed: 1950-11-27
Abstract: 677,408. Plasticizing rubber. DU PONT DE NEMOURS & CO., E. I. Nov. 27, 1950 [Dec. 3, 1949: Dec. 3, 1949], No. 28923/50. Class 70 Rubber is plasticized by adding from 0.003 to 0.5 per cent of a rubber plasticizing agent consisting of aromatic mercaptans and aromatic mercaptides of divalent heavy metals, and 0.0004 to 0.05 per cent of a substantially neutral nickel dithiocarbamate or nickel aliphatic xanthate. The mercaptans may be substituted with halogen, hydroxy, nitro, amine, carboxyl or ester groups. The metals of the mercaptides may be zinc, cadmium, nickel, tin and lead. Prefarably the compounds are used in solution in aromatic aliphatic, or cycloaliphatic hydrocarbons, alcohols, and esters or they may be dispersed in a diluent such as clay, whiting, carbon black, talc, silica or barytes, a preformed mixture may be used in which 0.2 to 5000 parts of the plasticizer is used to each part of the nickel dithiocarbamate or aliphatic xanthate. In Examples many compounds according to the invention are specified, the preferred compounds in each group are xylyl mer- .captan, zinc xylyl mercaptide, nickel dibutyl dithiocarbamate, and nickel ethyl xanthate. Specification 599,239 is referred to.
Patent GB-360585-A (GB)
Title: Improvements relating to indicating instruments
IPC: G05B1/04
Filed: 1930-09-26
Abstract: 360,585. Indicating-apparatus. ELLIOTT BROS. (LONDON), Ltd., 1, Central Buildings, Tothill Street, and SALMON, L. G., 41, Paultons Square, Chelsea, both in London. Sept. 26, 1930, No. 28938. [Class 106 (iv).] In an indicating instrument of the moving pointer type having arrangements for giving an auxiliary indication when certain readings are reached or departed from the pointer serves as a blocking member between a movable member and a fixed part, the movable member being yieldingly connected to a periodically moved member, relative motion between the latter two members being utilized to bring about the auxiliary indication. An instrument pointer E indicates against a scale G bearing a plane top and carries a blocking member F. A member A is pivoted to a support R and carries a curved chopper bar A<1>, Fig. 2, extending above the scale G. An extension member D<1> is adjustably attached to the bar A<1>. A second member B, also pivoted to the support R and connected to the member A by a compression spring C is periodically depressed by an electromagnet H. If the blocking member F is not under the extension piece D<1> the members A, B move together, but if the blocking piece is in its acting position the member B moves relatively to the member A and causes relative motion between two depending links K, L. An insulating disc Q on the link L then closes contacts P on the link K to give the auxiliary indication. At the same time a pawl O is rocked to advance a ratchet wheel M. The piece D<1> may be extended parallel with the bar A<1> so that an auxiliary indication is given whenever the pointer E passes a certain reading and the apparatus may be duplicated and arranged on both sides of the zero of the scale G.
Patent GB-1422507-A (GB)
Title: Board game
IPC: A63F3/00
Filed: 1974-06-29
Abstract: 1422507 Board game R E LLOYD 9 Aug 1974 [29 June 1974] 28981/74 Heading A6H Apparatus for playing a game comprises a board, marked with constellations, sixteen counters and eleven strip cards marked like computer cards. On their one sides, three of the cards are marked UFO, one bears an arrow, three bear no additional marks and four bear miles and instructions. The other sides of the cards bear similar marks but no card has two similar sides. The cards are cut from a sheet.
Patent GB-309823-A (GB)
Title: Improvements in or relating to apparatus for turning over sheets of music or the like
IPC: B42D9/08
Filed: 1928-10-09
Abstract: 309,823. Richter, J., Richter, F., and Winkler, F. Oct. 9, 1928. Leaf turners.-In a music &c. leaf turner, the pivots of the driving-devices which move the turning- levers over are arranged obliquely with respect to plane in which the turning- levers move. Fig. 1 is a side elevation of a device comprising several levers 3, the free ends of each of which has a clamp for securing a leaf, each lever 3 being operated in one direction by a stirrup-like device 7 and in the other by a similar device 8; the crowns of these devices 7, 8 have each a tooth such as 8<1>, engaging with the levers 3. The stirrups 7, 8 are joumaled on rollers r, which rotate on studs a, b arranged obliquely with reference to the plane in which the arms 3 are moved. By means of a pedal cord 2, the corresponding roller r is rotated against the action of the spring 10 or 11, and the tooth 8<1> on the stirrup engages with the lowest lever 3 and throws it over. To ensure the engagement of the stirrup 8 with the levers 3 it is counterweighted. One of the devices 7, 8 and its accessories may be omitted.
Patent GB-281465-A (GB)
Title: Improvements in saturators for the manufacture of crystalline salts
IPC: C01C1/242
Filed: 1926-11-18
Abstract: 281,465. Weyman, E. M., and Wallis, R. P., (Representatives of Weyman, G.). Nov. 18, 1926. Liquids, treating with gases.-In apparatus for the production of crystalline salts by saturating a liquid with a gas, small crystals are prevented from forming on the walls of the saturator A by placing an annular curtain 9 therein so that excess of the reacting liquid may be introduced between the curtain and the saturator wall. The liquid is supplied through a pipe 11 to an annular gutter 10 provided with overflow notches 12. The gas is passed into the liquid through a pipe 8 and a cracker pipe 6 provided with nozzles 16 set at an angle thereto and pointing upwards and downwards so that the flow of the gas produces a swirling motion of the liquid. Even distribution of the gas is obtained by making the size of each nozzle proportional to its distance from the pipe 8. The cracker pipe is supported on a ledge formed by the top of the cone 3 constituting the bottom of the saturator or by projections 7.
Patent GB-394858-A (GB)
Title: Improvements in or relating to methods of and apparatus for dividing petroleum bottoms
IPC: C10G7/00
Filed: 1932-10-18
Abstract: Petroleum residues comprising lubricating oils and asphalt are separated into these two constituents by adding thereto a diluent oil, for example, gas oil or kerosene, which is completely vaporizable under conditions at which vaporization of the starting material is negligible, continuously heating the mixture in a confined stream under pressure, releasing the mixture into a vaporizing zone under pressure so reduced that all the oils are vaporized under the contained heat of the mixture, the temperature, which may be about 700 DEG  F., being insufficient to cause cracking, separately condensing the vapour of the lubricating oils and <PICT:0394858/III/1> the diluent, while preventing the return of any condensate to the vaporizing zone, and withdrawing the asphaltic residue.  When the initial materials comprise wax distillate and cylinder stock in admixture with the asphalt, the vaporization of the oils may be followed by a fractionation of the cylinder stock and wax distillate vapours.  Alternatively, the wax distillate may be removed from the starting material by fractional distillation before subjecting it to the process.  The crude oil, which has preferably been freed from a part of the gasoline and impurities, may be introduced through a pipe 2 and a heater 4 to a column 6, where gasoline is obtained as an overhead product at 8, and kerosene and gas oil as side products at pipes 10, 12 respectively.  The residue of the column 6 is withdrawn at 14, and introduced through a heater 16 into a column 18 to obtain gas oil as an overhead product at 20, and wax distillate as a side product at 22.  Steam is preferably introduced into this column 18 through a pipe 24.  A side product consisting of wax distillate and cylinder stock may be taken off at 25.  The residue is withdrawn by a pipe 26, wherein it is admixed with a diluent consisting of gas oil brought from the column 6 by a pipe 28.  The mixture is led through a heater 30 and released into a flashing zone 32 maintained under vacuum.  If steam be injected at 34, only a moderate vacuum need be employed.  The asphalt residue is withdrawn at 36.  The mixed oil vapours pass upwardly through entrainment separators 38, and thence through a vapour pipe 40 which rises from a deck 42, by a pipe 44 to a condenser 46 connected to a suitable vacuum pump or jet.  When steam is used, the condensate is collected in a decanter 48, the water is drawn off at 50, and a part of the condensate returned through a pipe 52 to a reflux section 53 in the upper part of the column, the remainder, consisting of a gas oil condensate, being drawn off through a valved pipe 54 as a product.  The cylinder stock condensate is withdrawn at 56.  The annular space about the vapour pipe 40 is preferably provided with decks 58 forming a section into which steam is introduced at 60 for distilling off any remnant of gas oil which may pass downwardly towards the deck 42.
Patent GB-497504-A (GB)
Title: Improvements in and relating to mirrors and to binoculars and the like
IPC: G02B23/00
Filed: 1937-10-26
Abstract: 497,504. Clamps. MAYTUM, J. A., and SMITH, L. Oct. 26, 1937, No. 29263. [Class 61 (ii)] [Also in Group XX] In order to secure two mirrors 5 with their reflecting surfaces at rightangles to each other in a carrier consisting of two perforated backing plates 1 rigidly connected by a yoke piece 2, the mirrors are placed on the faces 7, which are accurately at rightangles to each other of a jig 10. Cement is applied to the plates 1 which are then laid over the mirrors and held by springs 14 on a right-angled bracket 13 pivoted at 22 on a vertical member 23 of the jig. The jig also comprises a spring plunger 9 which can be operated by a handle 17 so as to bear on the yoke 2.
Patent GB-504568-A (GB)
Title: Improvements in and relating to synthetic rubber-like materials
IPC: C08L11/00
Filed: 1937-10-26
Abstract: 504,568. Artificial rubber compositions. SCHARFF, G. E., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. Oct. 26, 1937, No. 29272. [Class 70] Artificial rubber produced by polymerizing 2-chloro-I 3 butadiene; for example as described in Specifications 387,340 and 387,363, is plasticized by milling therein, preferably 1 to 5 per cent, one of the following viz., chlorinated naphthalene, gasoline-insoluble chlorinated -paraffin wax containing less than 48 per cent chlorine, chlorinated diphenyl, a chlorinated fatty oil e.g. chlorinated linseed oil, or a chlorinated long chain fatty acid e.g. chlorinated stearic acid. Compounding ingredients such as fillers or other synthetic' rubber-like material e.g. the material obtained by treating ethylene dichloride and glycerol dichlorohydrin with sodium polysulphides may also be incorporated during the mixing. The composition may be used for the production of gaskets, shock absorbers, roller covers, &c. Specifications 462,078, 457,310. 457,311, and 470,168 also are referred to.
Patent GB-1182631-A (GB)
Title: Covering of Rolls with Fluorocarbon Polymers or other Heat-Shrinkable Thermoplastic Materials
Inventor: WESTON WALTER
IPC: B29C65/54
Filed: 1967-06-26
Abstract: 1,182,631. Covering rollers. FLUORODYNAMICS Inc. 26 June, 1967, No. 29364/67. Heading F2U. A method of covering a paper dryer drum or roll 40 comprises fitting a radially distended heat-shrinkable tube 42 of fluorinated ethylene polymer and connecting one, or both, ends with spring loaded clamps 43-45 to axially tension the tube 42 prior to heating to shrink the tube tightly on the roll, any wrinkles or distortions of the tube, resulting from the heat shrinking, being manually manipulated from the roll centre outwards, while still heated, as at (56), Fig. 2 (not shown), the tube being finally secured each end to the roll by adhesive (62) (Fig. 3, not shown) which may be injected by a syringe (63). The tube may be heated externally by traversing a hot air supply 47 along the roll, or in Figs. 2 and 3 (not shown) may be heated internally by passing steam through the roll, the tube and roll being raised to a temperature greater than that to be encountered in service to prevent damage to the roll surface when operating at normal service temperatures.
Patent GB-467147-A (GB)
Title: Process and apparatus for the simple hydrogenation of unsaturated hydrocarbons and the destructive hydrogenation of distillable carbonaceous materials
IPC: B01J8/04
Filed: 1936-10-29
Abstract: <PICT:0467147/III/1> The process and apparatus described in the parent Specification, in which the reaction temperature of destructive hydrogenation is regulated by the admixture of a gas with the reactants in the spaces separating a series of reaction zones, is extended to the non-destructive hydrogenation of hydrocarbons, e.g. the conversion of di-isobutylene to iso-octane.  In a modification, applicable both to destructive and simple hydrogenation, the temperature is controlled by indirect heat-exchange in the said spaces.  The Figure illustrates such an apparatus, in which the reactants pass upwardly through reaction zones 3 and are cooled in the intermediate spaces 5 by water flowing in coils 2.  Mixing devices 1 are provided as described in the parent Specification, and a similar device may precede the first reaction zone.
Patent GB-207959-A (GB)
Title: Improvements in and relating to calculating machines
Filed: 1922-10-27
Abstract: 207,959. Borel, C. Oct. 27, 1922. Statistical machines.-For each denomination movable members are displaced from a position of rest, under the control of the representation of the digit, through distances the sum of which corresponds to the digit, and the successive restoring of the movable members to their position of rest imparts to a member successive movements adding up to the value of the digit. In the construction shown the numbers to be added are taken from cards perforated according to the code shown in Fig. 1, where the digit 7 is represented by holes in columns of the value 4, 2 and 1, aggregating 7. Each denomination of the machine has four solenoids a<1> - - a<4>, Fig. 2, energized by brushes (not shown) making circuit through the perforations in the card. A shaft h, carrying a numeral wheel, has integral with it four ratchet wheels j each with ten teeth and four co-operating loosely mounted pawl-carrying arms g<1>, g<4>, all spring-urged in a clockwise direction, Fig. 2, and so arranged that when freed by hookended pivoted armatures b - - b<4> of the solenoids the arms g<1> - - g<4> turn through 1 - - 4 teeth respectively until arrested by a stop i<1>. The arms carry cams o<1> - - o<4> and are successively restored to their normal position by staggered pins p<1> - - p<4>, on a drum on a shaft 1, contacting with the cams during which restoring movement the numeral wheel is turned by amounts the sum of which corresponds to the digit. Each set of four pins p - - p<4> is mounted on a drum on a shaft 1, actuated by hand or otherwise, which shaft during one rotation first causes the units elements to be restored and then succassively in ascending order the remaining elements. In this way the transfer is not hindered. This transfer is of the type wherein the numeral wheel carries a pin engaging a wheel with ten teeth, gearing with a similar wheel mounted on the numeral wheel shaft of the next higher denomination.