baber/WOPTO huggingface dataset:
Patent GB-148579-A (GB)
Title: Process for obtaining the salts of sulpho-acids and alkyl-sulphuric-acids from acid resins
IPC: C07G1/00
Filed: 1920-07-10
Abstract: Salts of sulphonic and alkyl-sulphuric acids are prepared by fractionally precipitating with an inorganic salt the emulsions or solutions of the acid resins obtained by treating mineral or tar oils with fuming sulphuric acid.  In an example, the acid resin is agitated with a little water at 90-100 DEG  C., cooled, filtered, and about one-tenth its weight of a saturated solution of common salt is added.  The precipitate, consisting of neutral substances together with a small amount of sulpho acid salts, is filtered off and may be used as a substitute for asphalt.  The remaining sulpho acids are precipitated by addition of larger quantities of common salt solution.  The filtered salts are washed with salt solution and may be purified by treatment with alcohol, or with oxidizing agents such as permanganates.
Patent GB-1510254-A (GB)
Title: Multistage expansion evaporator
IPC: C02F1/06
Filed: 1976-05-19
Abstract: 1510254 Multistage expansion evaporator G A PIEPER 19 May 1976 [20 May 1975] 20745/76 Heading BIB A multistage expansion evaporator having a number of evaporator compartments with common partition walls in adjacent compartments connected in series with a flow connection for the flow of liquid undergoing pressure reduction leading from one compartment to the next, is provided with flow control means to throttle flow in at least one of the flow connections, these means being adjustable from outside the compartments. Part of an embodiment of a vertical evaporator is shown in Fig. 3 where liquid feed which has passed through heat exchangers (not shown) within the compartments is further heated externally to a temperature T3 after which it is evaporated partially in compartments 2, 3 and 4. Evaporated water condenses on the heat exchangers and is led off. The flow control means is provided by openings 19, 20 and 21 of decreasing size located near the throttling openings 14, 15 and 15a. The control openings 19 to 21 may be cut off by valves 22 to 24 connected to a shaft 25 capable of vertical movement. Other control means are mentioned including coaxial shafts, rotating valves etc. Horizontally arranged evaporators are also described.
Patent GB-857301-A (GB)
Title: Data transfer control apparatus
IPC: G06F7/02
Filed: 1958-06-27
Abstract: 857,301. Electric data-storage apparatus. INTERNATIONAL BUSINESS MACHINES CORPORATION. June 27,1958 [July 2, 1957], No. 20746/58. Class 106 (1). Apparatus for controlling the transfer of data to or from selected storage positions includes a counter, a first control circuit responsive to a first predetermined condition of the counter for initiating a gating signal and another control circuit responsive to a second condition of the counter for terminating the gating signal. As described, an instruction source 10, Fig. 1, provides an instruction in the form where T 1 , T 2  denote the source and destination storage media, the selection of which is not described, and a 1  b 1 , a 2  b 2  denote the first source and destination positions in the media T 1 , T 2 , respectively, m n denoting the number of character storage positions involved. It is assumed that the storage media are magnetic drum tracks each having 100 character storage positions, characters being in an eight-bit code. During an initial instruction cycle, counters 11, 12 are preset to the complement on 99 of a 1  b 1 , a 2  b 2 , respectively, and a register 13 is set to the value m n. In a read cycle, the first bits of each character enable an "and" gate 14 supplied with timed pulses which steps on the counter 11 which, when its capacity is exceeded, operates a trigger 18 to open a gate initiating read-out. A comparator 22 compares the contents of the counter 11 with the m n register and is adapted to reset the trigger 18, terminating read-out when equality is attained. The operation during a write cycle is similar, with W cycle pulses on a line 25 feeding the a 2  b 2  counter 12. The counters employed are conventional binary-decade counters employing double triode units as stages.
Patent GB-693118-A (GB)
Title: Improvements relating to rotary hearth furnaces
IPC: F27B21/06
Filed: 1950-08-23
Abstract: 693,118. Rotary-hearth furnaces. LOWE, J. S. Nov. 16, 1951 [Aug. 23, 1950], No. 20840/50. Class 51(ii) In a rotary hearth furnace, the hearth 1 running on rollers 2 and driven by driving gear 3 has mounted on it radially disposed alloy steel trays 5, each tray being open at the outer end, having a downwardly projecting knife edge 6 engaging a groove 7 in the periphery of the hearth and having a push rod 8 mounted below it. As each tray 5 reaches a discharge station, a piston 9 raises the push rod 8. tilts the tray about the knife edges, and discharges its contents down an alloy steel shoot 10 through a hinged flap 18 below a counterweighted door 11. After being discharged, each tray 5 passes under an alloy steel flexible woven mattress baffle to a charging station. The furnace is heated by burners disposed through the peripheral wall in a direction opposed to the rotation of the hearth. The latter may be made annular rotating in a circular tunnel furnace.
Patent GB-394822-A (GB)
Title: Improvements in or relating to light sensitive cell circuits particularly for use in photographic sound reproduction
IPC: E02B3/06
Filed: 1932-07-25
Abstract: 394,822. Thermionic valve circuits. RADIO CORPORATION OF AMERICA, 570, Lexington Avenue, New York, U.S.A.- (Assignees of Kreuzer, B. ; 120, Newport Avenue, Rockaway Park, Long Island, New York, U.S.A.) July 25, 1932, No. 20908. Convention date, Aug. 7, 1931. [Class 40 (v).] A l i g h t-sensitive cell circuit, particularly for use in the reproduction of optical sound records, has the cell connected in series with the primary winding of a transformer and a source of potential, a further winding, which is grounded at its mid-point, being inductively associated with the primary winding and shielding means being provided for these windings. The primary winding of the transformer may be shunted by an impedance, and the source of potential by a capacity. The transformer is connected through another transformer to the gridfilament circuit of an amplifier, across which circuit a resistance and, if desired, an inductance is inserted. A cell circuit so arranged is stated to give substantial linear response and avoid the introduction of harmonics. Fig. 1 shows the cell 10 connected in series with the primary winding 12 of a transformer and a source of potential such as a battery inserted at 11. The transformer is shielded at 15 and the secondary 16 is earthed at a centre-tapping and connected with a transformer 18 and an auto-transformer supplying the input of an amplifier 17, across which a resistance 19 and if desired an inductance is shunted.
Patent GB-329893-A (GB)
Title: Improvements in cases for housing and carrying milk and like liquid containers
IPC: B65D3/20
Filed: 1929-07-09
Abstract: 329,893. Palmer, H. W. S. July 9, 1929. Fittings, internal.-Containers for milk &c. of cylindrical shape, closed at one end by a circular disc, and at the other by the sides being pressed together to form a diametral seam, are packed for transport in a cylindrical casing A with their diametral seams c<3> engaging grooves b<1> in, or equivalent supporting devices on, a central pillar b, their circular bases c<1> engaging the wall of the casing. The vertical grooves may be formed in a separate cylinder arranged to fit on the pillar b. Specification 212,831, [Class 66, Hollowware], is referred to in the Provisional Specification.
Patent GB-810866-A (GB)
Title: Improvements in and relating to grids for electron discharge devices
IPC: H01J19/00
Filed: 1955-07-21
Abstract: 810,866. Making grids for thermionic valves. GENERAL ELECTRIC CO. July 21, 1955 [July 21, 1954], No. 21174/55. Drawings to Specification. Class 83 (2). [Also in Group XL (a)] Method of forming a grid for an electric discharge device by an electro-forming process comprises preparing a pattern having a mesh area and one or more support areas, photographically reproducing the pattern on a sensitized plate, developing the plate, electrolytically depositing metal in accordance with the developed pattern to form a sheet, masking the mesh area of the sheet, depositing further metal on the support areas and removing the developed plate.
Patent GB-937230-A (GB)
Title: Synchronous generator
IPC: H02K19/30
Filed: 1960-06-17
Abstract: 937,230. Exciting synchronous machines. MEZ BRNO, NARODNI PODNIK. June 17, 1960 [June 19, 1959], No. 21362/60. Class 35. A synchronous generator 1 has its field 5 fed through semi-conductor rectifiers 4 by compounding means including a current transformer 3 (or a compound transformer 11, Fig. 3, not shown) the primary winding 6 of which can, for starting purposes, be connected across the generator terminals 12, 13 through an auxiliary winding 8 by a (push-button) switch 9. A compounding arrangement comprising a choke and current transformer is also described (Fig. 4, not shown).
Patent GB-1520709-A (GB)
Title: Process for producing c3 - c20 aliphatic alcohols
IPC: B01J23/847
Filed: 1977-05-20
Abstract: 1520709 Catalysts for the hydrogerative carbonylation of acetylene INST NEFTEKHIMICHE SINTEZA IM AV TOPCHIEVA AKAD NAUK SSSR and NOVOMOSKOV PROIZVODSTVENE OBIEDINENIE AZOT 20 May 1977 21397/77 Heading B1E [Also in Division C2] A catalyst comprises 92-95% by weight of Fe 3 O 4 , 0.5 to 2.0% by weight of an alkaline promoter selected from K 2 O and Na 2 O and 3-7.5% by weight of a mixture of structuremodifying agents V 2 O 5 , Al 2 O 3 , and SiO 2 . The catalyst may be reduced, e.g. with hydrogen, to give a fused iron catalyst.
Patent GB-841418-A (GB)
Title: White-wall rings for motor vehicle tyres
IPC: B60B7/01
Filed: 1958-07-04
Abstract: 841,418. Tyre trim rings. DRABING, W. July 4, 1958 [July 22, 1957], No. 21441/58. Class 144 (2). A detachable white-wall tyre sidewall trim ring comprising a curved inner peripheral portion 8 which is clamped between the tyre bead 7 and the flange of the wheel rim 6 has a flat outer peripheral trim portion 1 which is provided at its radially inner and outer regions with circumferential ribs 3, 2 respectively on its tyre facing surface to bear on the tyre sidewall, defining an air space 4 therebetween, and thereby reduce friction between the trim ring and the tyre sidewall in the event of relative creep. The rib 2 may have a bearing insert of smooth-surfaced abrasion-resistant synthetic plastic or the like, and the inner periphery of the ring portion 8 may have a rib 9 to seat under the tyre bead heel.
Patent GB-1269499-A (GB)
Title: Pipe connections
Inventor: EDMONDSON RONALD
IPC: F16L41/14
Filed: 1968-05-07
Abstract: 1,269,499. Branch pipe fittings. PLASTIERS Ltd. 2 May, 1969 [7 May, 1968], No. 21458/68. Heading F2G. A connector for connecting a branch pipe to a main pipe 1 having a hole 2 in the wall thereof comprises a saddle 4 and a spigot 8 which are adapted to be fitted to the pipe 1 from outside the pipe so that the spigot extends into the pipe and inside the saddle, the spigot including radially projecting flange portions 11 which are adapted to engage the inside of the pipe 1 but which are displaceable inwardly towards the axis of the  spigot to allow the passage thereof through the hole 2 into the pipe 1 during fitting of the spigot. The connector includes a holding member 3 the operation of which draws the flange portions 11 of the spigot and saddle axially towards each other and against the wall of the pipe so as to form a seal between the connector and pipe 1. As shown, the saddle has a continuous rim 7, or a number of teeth or projections, which extends through a sealing ring 6 and to position the connector, and the spigot of resiliently deformable material, e.g. metal or synthetic plastics, is internally screw-threaded to receive the socket 3 the latter including a flange to compress a sealing ring 13. In a modifications, the spigot has projections or keys to engage and to prevent the spigot from dropping into the pipe, the saddle being correspondingly grooved to accommodate the projections.
Patent GB-1322623-A (GB)
Title: Macroencapsulation of elastomeric or mastic polymers
IPC: B01J2/00
Filed: 1971-04-19
Abstract: 1322623 Coated elastomeric or mastic pellets ESSO RESEARCH & ENG CO 19 April 1971 [4 March 1970] 21468/71 Heading B2E A pellet of from 1/32" to 1" in its largest dimension comprising an elastomeric or mastic polymer (i.e. a polymer having a glass transition temperature and melting point both below 20‹C) surrounded by a substantially continuous film (i.e. covering at least 80% of the total surface area of the elastomer) of a non-elasto meric, thermoplastic polymer of melting point above 150‹F is prepared by heating the elastomeric or mastic pellet to a temperature above the melting point of the thermoplastic polymer, contacting the elastomer and polymer, the latter being in the form of a powder, emulsion, solution or melt, by dipping or spraying, and cooling the product after removal of excess coating material. The elastomeric or mastic polymer may be on ethylene-propylene copolymer or terpolymer with ethylidene norbornene, butyl rubber (optionally halogenated), natural rubber, polyisoprene, polyisobutylene, polybutadiene, polyohloroprene, polysulphide, propylene oxide polymer or copolymer, polyepichlorohydrin, chlorinated polyethylene, silicone rubber, butadiene-styrene or -acrylonitrile copolymer, polyurethane or polyethylacrylate. The thermoplastic coating may be of polyethylene, polypropylene, polystyrene, polyvinyl or -vinylidine chloride, poly(meth) acrylate, polyimide, polyvinylalcohol, ethylenevinyl acetate or -α-olefin copolymer, petroleum or terpene resin, poly-α-olefin copolymer, petroleum or terpene resin, poly-α-methyl-, styrene, poly-4-methylpentene, polyacrylonitrile, cellulose ester, methylcellulose, acetal polymer, polyester, coumarone-indene resin, polyvinyl acetate or styrene - acrylonitrile copolymer. The pellet may be in the form of a rod or spheroid.
Patent GB-700000-A (GB)
Title: Improvements in computing machines
IPC: G06C15/04
Filed: 1950-03-15
Abstract: 700,000. Calculating-apparatus. ING. OLIVETTI & C., SOC. PER. AZIONI. March 15, 1950, No. 21471/52. Divided out of 699,954. Drawings to Specification. Class 106 (i). An adding and subtracting machine having a, register, reciprocable racks for actuating said register, a fugitive one mechanism for entering one unit into the lowest order register wheel under the control of the highest order, register wheel, and means for initiating a division opera. tion is characterized in that substantially at the beginning of a division operation said fugitive one mechanism is disabled. The subject-matter of this Specification is disclosed in Specification 699,954.
Patent GB-716974-A (GB)
Title: Manufacture of pregnenals
Filed: 1951-09-12
Abstract: The invention comprises D 4-17a -hydroxy-3,20-diketo-pregnene-21-als and their preparation by reacting a quaternary D 4-17a -hydroxy-3,20-diketo-pregnene-21-yl pyridium salt with an aromatic nitroso compound and from the nitrone obtained the aldehyde is liberated by treatment with a mineral acid or an a -keto acid.  As aromatic nitroso compounds there may be used nitroso-benzene and p-dimethylaminonitrosobenzene.  The condensation may be effected in the presence of an alkaline agent, e.g. potassium bicarbonate. Examples describe the preparation of D 4-17a -hydroxy-3,20-diketo-pregnene-21-al and D 4-17a -hydroxy-3,11,20-triketo-pregnene-21-al. Specification 539,441 is referred to.  D 4 - 17a  - hydroxy - 3,20 - diketo - pregnene - 21 - yl - pyridium bromide is obtained by treating the corresponding 21-bromo compound with pyridine.  D 4 - 17a  - hydroxy - 3,20 - diketo - pregnene - 21-yl-pyridium chloride is obtained by treating the corresponding 21-hydroxy compound with pyridine and tosyl chloride.  D 4 - 17a  - hydroxy - 3,11,20 - triketo - pregnene-21-yl-pyridium bromide is obtained by treating the corresponding 21-hydroxy compound with pyridine and p-toluene-sulphonyl bromide.
Patent GB-304568-A (GB)
Title: Improvements in or relating to forks and similar hand implements used in land cultivation
IPC: B25G3/02
Filed: 1928-07-25
Abstract: 304,568. Hunt & Sons, (The Brades), Ltd., W., and Heaton, W. July 25, 1928. T-shaped handles; fixing by langet sockets.-A fork or other land-cultivation implement has the T-handle and shaft strengthened by a T-shaped plate of which the cross-piece and vertical part are engaged respectively in the handle grip and in the upper end of the shaft, strap-like continuations of the socket which carry the tines &c. being adapted to embrace the grip and the several parts being secured by through rivets. The grip or cross-piece is in. halves a and the upper end of the shaft b has a saw-cut b<1>. These parts are reinforced bv a T-shaped steel piece c, the head c<11> of which is positioned between the halves a of the grip and the stem c<1> is received in the saw cut b<1>. One of the metal straps d<1> of the socket d carrying the tines e is longer than the other strap d<11>, the end of the strap d<1> being bent over the grip and tucked under the end of the strap d<11>. The parts are secured together by a number of through rivets f.
Patent GB-645395-A (GB)
Title: Improvements in or relating to magnetic work holders for machine tools
IPC: B23Q3/154
Filed: 1948-08-17
Abstract: 645,395. Magnetic work holders. STENBEK, S. Aug. 17, 1948, No. 21637. [Class 60] A magnetic work holder wherein two surfaces 1, 7 are relatively rotatable about a common axis 5 has two cylindrical members 17<SP>1</SP> 19 to permit the angle of inclination between the surfaces to be accurately measured. The dimensions D<SP>1</SP> D<SP>2</SP> and R are known and the dimension L is measured with a micrometer so that the angle can be determined by trigonometry. Aproximate adjustments are effected by a worm 9 and a worm wheel 8 which is provided with a scale 11 and clamping means. The magnetic surface 1 is composed of sections insulated by lead strips while the surface 7 has a groove to engage a guide on a machine table. Transverse parallelism of the surfaces 1 and 7 is ensured by setting the member 19 and a second member coaxial therewith to the same height with the aid of a dial gauge. An adjustably-secured ruler is provided.
Patent GB-826488-A (GB)
Title: Improvements in or relating to sewing machines
IPC: D05B51/00
Filed: 1956-07-13
Abstract: 826,488. Sewing machines. PFAFF A. G., G. M. July 13, 1956 [Aug. 2,1955], No. 21642/56. Class 112 Stopping. The circuit through a relay adapted to stop the machine is periodically interrupted in synchronism with the periodic thread tension, the relays having a delayed action such that the machine is only stopped when the thread fails or breaks. The invention is described in connection with a button-hole machine which is automatically stopped, irrespective of the relay control, after a predetermined cycle, the speed of the machine being first reduced to half-speed just prior to stopping. The interrupter comprises a contact 43, insulatingly secured to the machine head and periodically contacted by the end of the take-up spring 41. The machine is started by closing the switch 46 and the current pulses in the circuit do not actuate the relay 69 due to delay action produced by resistance 66 and capacity 71. If, however, contacts 41, 43 remain closed the relay closes contacts 75, 76 to energize electromagnet 51 to reduce the speed of the machine to half-speed, and closes contacts 73, 74 to short-circuit the relay winding 68 by resistance 78. The relay opens it contacts and then closes them again and electromagnet 51 is again energized to stop the machine. The electromagnet may actuate a circuit breaker in the circuit of the machine motor to effect immediate stoppage. The invention may be applied to a multi-needle machine the thread take-up contacts for each needle being arranged in parallel.
Patent GB-756161-A (GB)
Title: Coded electrical signal transmission system
IPC: H03M3/02
Filed: 1953-08-07
Abstract: 756,161. Pulse code modulation circuits; pulse circuits. STANDARD TELEPHONES & CABLES, Ltd. Aug. 7, 1953 [Aug. 7, 1952], No. 21852/53. Classes 40 (5) and 40 (6). In a pulse code communication system wherein the transmitted pulses represent changes in signal amplitude, and are taken from a train of regularly-repeated pulses, the recurrence frequency of a second pulse train is modulated by a signal wave and a code pulse is transmitted corresponding to each pulse from the first train which follows next after a pulse in the second. In order so that the transmitted pulses should represent changes in signal amplitude, the modulating wave is derived from the original signal wave at terminal 11, Fig. 3, by differentiation in circuit 12, 13. It is applied to the grid of the blocking oscillator 14, 15 through the cathode follower stage 16 and varies the oscillator recurrence frequency. The modulated pulses in transformer 15 are applied to a two-stability trigger circuit 17 to change its state from A to B. The regularly repeated pulses from terminal 18 are applied to circuit 17 to change its state from B to A. The latter change produces a code pulse at the output terminal 20 from a differentiating and amplifying circuit 19 connected to circuit 17, that is whenever a pulse at 18 immediately follows a pulse from 15. Circuit 17 may alternatively comprise a normally non-conducting rectifier 34, Fig. 5, the bias on which is too great to be overcome by the regularly-repeated pulses applied thereto from terminal 31, through rectifier 33 and condenser 35, unless in the preceding interval one of the modulated pulses applied to terminal 30 has charged condenser 35 through rectifier 36. Specification 627,462 is referred to.
Patent GB-723975-A (GB)
Title: Improvements in or relating to vehicle wheels
IPC: B60B17/00
Filed: 1951-09-18
Abstract: 723,975. Spring wheels. MANTZEL, A. W. Sept. 18, 1951 [Oct. 2, 1950; April 5, 1951], No. 21889/51. Class 144 (1) A spring wheel has a rim 3 resiliently supported for relative radial displacement with respect to a hub 4 by means of two rubber rings 1 of greater axial width than radial thickness, the axially inner and outer edges of which are bonded to inner and outer annular discs 5, 2 respectively detachably secured to the rim 3 and hub 4. As shown, the rubber rings 1 may be vulcanized to the 'rim parts 3 which are bolted to peripherally meeting portions of the discs 5, the latter being obliquely cranked axially outwardly to bring their radially inner peripheries, which are provided with self-lubricating slide rings 6, adjacent the outer or guide discs 2. Fig. 3 shows an arrangement wherein the rubber rings 1 are each vulcanized at their side edges, which are thickened to provide greater area of adhesion, to separate annual rings 17, 15, which are releasably secured to the rim-supporting discs 5 and guide discs 2 respectively in such a manner that the rubber rings 1 slope radially outwardly towards the rim 3.- The annular guide discs 2 may have' interengaging toothed inner peripheral flanges 10 forming a double conical hub for clamping on a wheel axle 11, the inboard disc 2 carrying a brake drum 13. The supporting discs 5 may have their inner peripheries formed by an inverted channel section ring 19 housing a rubber buffer ring 20, the slide blocks 6 being supported on the axial flanges of the channel 19 in recesses in the discs 5. In an alternative construction the discs 5 may themselves be shaped to form together a hollow inner peripheral bead, the radially inner surface of which houses the buffer ring. In a further construction the annular rings 15 may be attached to a single radially extending rigid hub disc 2 on opposite sides of which the rim-supporting members bear via slide blocks and packing rings, the supporting members forming a sealed hollow annular space in which the disc 2 slides. The sealed space may be oil filled for damping purposes. Where high static loads are to be supported, spring-loaded balls engaged in recesses in the discs 2 may be provided between the annular discs 2 and 5.