baber/WOPTO huggingface dataset:
Patent GB-841323-A (GB)
Title: Improvements in or relating to the manufacture of hydrogen peroxide
Inventor: LAIT JOHN GEOFFREY MARSHALL RA
IPC: C01B15/023
Filed: 1956-11-15
Abstract: In the production of hydrogen peroxide by the successive catalytic hydrogenation and autoxidation of an organic compound in a solvent medium, with recycling to the hydrogenation stage after aqueous extraction of the hydrogen peroxide produced in the oxidation stage, the aqueous hydrogen peroxide extract is treated, before or after distillation, with an organic solvent for said organic compound and solvent medium comprising a mixture of aromatic hydrocarbons having a b.p. of 145-200 DEG  C. with or without a small proportion of aromatic hydrocarbons having a b.p. of less than 145 DEG  C.  A distillate containing 35-50% of hydrogen peroxide or a distillation residue may be treated.  In the examples, 18% aqueous hydrogen peroxide obtained by a process using a mixture of 2-ethyl-anthraquinone and 2-ethyl-tetrahydroanthraquinone dissolved in a mixture of xylene and methylcyclohexyl acetate was passed downwards through a tower packed with Raschig rings and filled with an aromatic solvent of petroleum origin at a rate of 40 gal./hr., the ratio of organic phase to aqueous phase being 1 to 680-700. Specifications 465,070 and 786,838 are referred to.
Patent GB-1398505-A (GB)
Title: Method and apparatus for data transfer
IPC: H03M5/00
Filed: 1973-07-23
Abstract: 1398505 Digital data transmission; code conversion PRAXIS SpA 23 July 1973 [21 July 1972] 34985/73 Heading H4P Digital data is transmitted by splitting the data into a string of n-bit microwords, each of which is interpreted as a binary number, and transmitting a string of pulse trains each of which consists of as many pulses as the binary value of a corresponding microword and is separated from adjacent pulse trains by a pause at least as long as the duration of one pulse. On reception, the pulses in each train are counted in a binary counter to reconstitute each microword. A block of data is fed into register 1, and the first n-bits microword, where n = 3, is applied to inputs b 1 , b 2 , b 3  of a comparator. A pulse generator 4 feeds pulses to transmitter 5 and also to a counter 3 which is coupled to inputs c 1 , c 2 , c 3  of the comparator. When the two sets of inputs are equal, the comparator stops the pulse generator to initiate the pause, and shifts the data in the register so that the next three bit microword is connected to the comparator. In the case of all three bits being zero, a comparison is made between inputs b 4 , c 4  to produce an eight pulse train. The number of microwords in the register is counted by counter 6, and when all have been encoded a longer pause is initiated and the next group of microwords is fed into register 1. At the receiver, the received pulses are counted in counter 10 and, on detection of the pause at the end of a microword, gates 13, 14, 15 are enabled to feed the count reached into register 12. The data is then shifted and the next microword similarly stored. When sufficient microwords to fill register 12 have been counted by counter 16, the contents of the register are read out.
Patent GB-486739-A (GB)
Title: Improvements in and relating to electric circuit breakers having arc-extinguishing arrangements
IPC: H01H9/36
Filed: 1937-12-17
Abstract: 486,739. Arc-rupturing in switches. BRITISH THOMSON-HOUSTON CO., Ltd. Dec. 17, 1937, No. 35015. Convention date, Dec. 17, 1936. [Class 38 (v)] A circuit-interrupter comprises a pair of contacts one of which is movable between open and closed circuit positions, walls of pressureresistant material surrounding the contacts to form a gas-tightly sealed compressionchamber having a volume such that gas-pressures of substantial magnitude are set up therein by the heat of the arc, and a plurality of spaced metallic arcsplitting members disposed adjacent the path of the movable contact for cooling the arc, the metal members and gas-pressures co-operating to effect rapid arc-extinction. The arrangement ensures arc-extinction by employing relatively low gas-pressures, so obviating the risk of rupture of the chamber walls. The compression-chambers of a multi-pole circuitbreaker are identical, and each comprises a cup 16, for example of drawn steel, provided with a slot 17 for receiving the horizontal limb of an L-shaped member 15 forming with a similar member 14 the end wall of the chamber, the member 14, 15 being preferably of die-cast aluminium. The cup 16 is riveted at 20 to member 15, preferably with joint-sealing compound. Members 14, 15 are placed together to form a recess 21, 23 which leads to cylindricalbearing grooves 22 for the shaft 27 and to an aperture through which passes the movablecontact arm secured to the shaft. The arm comprises leaf-springs 30 carrying an arcing- member 31, preferably of nickel, and a contact 32, which co-operates with a fixed contact 35 on an arcing-member 36 secured to a stud 37 extending through insulating bushings 38, 39 to conductor 41. When the parts are assembled in place and secured by screws 58, insulating compound 59a is run in and allowed to set. The configuration of the contacts and arcing- members is such as to blow the arc magnetically outwards into contact with the stack of spaced plates which subdivide and cool it. Plates 49 are magnetic and plates 50 of good heat-conductivity metal, but all may be magnetic or of copper. They are formed with central apertures 63 to equalize the gas-pressure set up by the arc-sections, and with tongues 52 engaging notches in the insulating support 53, an insulating surround 55 prevents contact between the cup 16 and tongues 52. The ends of shaft 27 are squared to receive insulating operating cranks and sealing material is applied at the bearings. The circuit-breaker is manually operable by means of handle 62 and may be releasable to open on overload. Specification 420,042 is referred to.
Patent GB-765237-A (GB)
Title: Process for fireproofing fabrics, paper and other porous materials and composition for carrying out such process
IPC: D06M11/57
Filed: 1954-12-03
Abstract: 765,237. Fireproofing. ZANDE, L. J. C. VAN DE. Dec. 3, 1954 [Dec. 5, 1953], No. 35068/54. Class 140. A process for fireproofing fabrics, paper and other porous materials comprises impregnating the material with an aqueous solution of ammonium sulphate, ammonium phosphate, basic acid and sodium tetraborate, the solution also containing glycerine and Turkey red oil. Impregnation may be carried out at a temperature of 30 to 50 C. and may be accomplished by soaking or by spraying. Formalin may be added to the solution.
Patent GB-1272439-A (GB)
Title: Self-locking container
Inventor: BARTON ALAN JOSEPH
IPC: A47G29/14
Filed: 1969-07-12
Abstract: 1,272,439. Latch fastenings. L. R. BOOTLE & NORMAN Ltd. 10 July, 1970 [12 July, 1969], No. 35219/69. Heading E2A. [Also in Division A4] A latch used in a delivery receptacle (see Division A4) has latch means 39 biassed into the latching position by spring 43, and detent 49, biassed by. spring 51 to hold the latch withdrawn. Trip member 56, biassed by spring 58 is provided to enable detent 49 to be rotated and so release latch means 39. Lever 24 is provided to withdraw the latch means to the position shown, this lever being operated through a second lever 9 which also withdraws a latch at the opposite side of the receptacle.
Patent GB-1267649-A (GB)
Title: Improvements in or relating to a vehicle provided with a brake slewing system
IPC: B62D11/08
Filed: 1970-07-21
Abstract: 1,267,649. Braking for steering. IFA GETRIEBEWERKE BRANDENBURG-VEB. 21 July, 1970, No. 35233/70. Heading B7H. [Also in Division F2] In a vehicle having a combined hydraulic braking and steering system, the main brake cylinder 2 is coupled to each of the wheel brake cylinders 4, 4<SP>1</SP> via units 5, 5<SP>1</SP> which are also connected via an eccentric 15 to the steering wheel 16, the arrangement being such that on depression of the brake pedal 1 both cylinders 4, 4<SP>1</SP> are actuated, and on turning the steering wheel 16 only one of the cylinders 4, 4<SP>1</SP> is actuated thus effecting steering. Each unit 5, 5<SP>1</SP> has aligned cylinders 6, 9 containing spring loaded pistons 7, 10, the piston 7 normally abutting rod 19 integral with piston 10 and being connected to a push rod 11 coupled to eccentric 15. On depression of pedal 1 fluid is supplied via line 17 to the cylinders 9 of both units to move pistons 10 and thus pistons 7 whereupon both cylinders 4, 4<SP>1</SP> are actuated. On turning the steering wheel 16 a push rod 11 causes selective movement of only one of the pistons 7, fluid within the appropriate cylinder 6 being pressurized and acting via line 14 to actuate the associated wheel brake cylinder 4 or 4<SP>1</SP>.
Patent GB-737445-A (GB)
Title: A method of treating germanium or silicon for modifying the electrical or electro-optical conductivity
IPC: H01L29/06
Filed: 1953-12-18
Abstract: The electrical or electro-optical characteristics of germanium or silicon are modified by mechanical deformation of a portion of the material while the whole is maintained at an elevated temperature below its melting point.  The semi-conductor may contain significant impurity, and N-type material may be partially converted to provide PN junctions.  The deformation may be bending, compression or stretching and the temperature for germanium may be 850 DEG  to 900 DEG  C.
Patent GB-155289-A (GB)
Title: Improvements in or relating to the production of yeast
IPC: C12N1/18
Filed: 1920-12-15
Abstract: 155,289. Verein der Spiritus-Fabrikanten in Deutschland. Dec. 23, 1915, [Convention date]. Yeast.-In the cultivation of yeast in a medium consisting of a solution of sugar and mineral salts, use is made of the acid liberated to check the growth of objectionable ferments. For this purpose, the seed yeast is grown in a portion of the medium without neutralizing agents until the required amount of acid is produced, and is then added to the remainder of the culture medium either in the same or in another vessel. Chalk or other neutralizing agent is supplied in known manner.
Patent GB-381406-A (GB)
Title: Apparatus for facilitating training in typing
IPC: B41J29/393
Filed: 1931-12-21
Abstract: 381,406. Electric signalling systems. SAFAR, J., 11, Kernekerova, Znaim, Czecho- Slovakia. Dec. 21, 1931, No. 35303. [Class 40 (i).] - Apparatus for use in practising touch - operation of typewriters and like machines comprises a copyholder provided with electric signalling means for indicating the depression of each key in a keyboard. In the apparatus shown in Figs. 1, 2 and 5, a copy-holder D is combined with an indicator h consisting o f a transparent or translucent plate i bearing letters &c. arranged over lamps l which are connected to contacts d adapted to be closed by the keylevers m of a typewriter A. The lamps are mounted in an insulating-plate e and are surrounded by sleeves k. Contacts g for the lamps are connected by leads r to the contacts d, a battery being connected to the framework of the typewriter, and a metal plate f engaging the lamps. The contacts d are mounted in a grooved insulating-strip b secured by clips c and brackets o to the front plate a. The leads r are formed into a cable E. On depression of any key-lever, the circuit of the associated lamp is closed and the corresponding letter &c. is illuminated.
Patent GB-640828-A (GB)
Title: Improvements in or relating to sound film scanning apparatus
IPC: G11B7/00
Filed: 1947-12-31
Abstract: 640,828. Sound film apparatus. KODAK, Ltd. Dec. 31, 1947, No. 35305. Convention date, Jan. 8. Addition to 638,180. [Class 40 (ii)] [Also in Group XL (b)] Relates to sound film scanning apparatus of the type described in the parent Specification. The light from exciter lamp 10 is projected through lenses 19, 20 and 23 on to the sound-track of film 16 which is guided by drum 12. The light from the film is deflected through a lightconducting rod on to a photo-electric cell tc produce impulses foi sound reproduction. The reed 17, which vibrates under control of electromagnet 15 tc interrupt the light beam and compensate for cyclic variations in the brightness of lamp 10, as described in the parent Specification, is fixed to casing 24 which is moulded from a plastic material. According to the invention, the electromagnet 15 is connected in series with the lamp 10. The phasing control is achieved by means of a copper slug 33 which is threaded on the long thin core 32 of the electromagnet.'
Patent GB-1522162-A (GB)
Title: Apparatus for fluidising solid particles
IPC: B01J21/20
Filed: 1975-08-27
Abstract: 1522162 Fluidising elements SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV 27 Aug 1975 [29 Aug 1974 2 May 1975] 35351/75 Headings B1C and BIF In a fluidised bed apparatus 13, Fig. 2, the dimensions of equalsized gas inlet nozzles 21 are such that as shown in Fig. 3, D 2 -D 1 # @ L 2  0.18 and D 1 #1.67. The apparatus may be @ L 1  used for burning off carbon from used hydrocarbon conversion catalyst.
Patent GB-485548-A (GB)
Title: Improvements in or relating to cathodes for cathode ray tubes
IPC: H01J29/48
Filed: 1937-12-21
Abstract: 485,548. Cathode ray tubes. ZEITLINE, V., ZEITLINE, A., and KLIATCHKO, V. Dec. 21, 1937, No. 35354. Convention date, Dec. 22, 1936. [Class 39 (i)] [Also in Group XI] The cathode comprises a cylinder 1 in series with the heating filament and mounted in a support 4. An extension 2 has an activated layer 3.
Patent GB-492741-A (GB)
Title: Improvements in and relating to methods of making paper bags and apparatus therefor
IPC: B31B39/00
Filed: 1936-12-24
Abstract: 492,741. Making paper bags. GODER, M. Dec. 24, 1936, No. 35445. [A Specification was laid open to inspection under Sect. 91 of the Acts, Sept. 11, 1937.] [Class 94 (ii)] In a method of making cross-bottom multi-ply paper bags by severing at least some of the plies of paper 1, 2, 3 from webs and superimposing at least some of the cut sheets in overlapping relationship to form a blank which is folded to tubular form along lines 7, 8 running transversely to the direction of travel, the plies are all the same width and the outer ply is also stopped transversely at 4 to provide a strip which is folded over and gummed down at 5 to reinforce the filling opening. The reinforcing strip may, alternatively, be severed from an additional narrow web and applied to the edge of the multi-ply blank. Creases 6, 7 and 8 are formed in the blank which, after gumming at 10, 11, 12 and folding on the lines 7, 8, is folded into the square and gummed at 17, the bottom corners 18, 19 being folded over to complete the bag. Mechanism for making a modified form of bag comprises rolls 30, 31 for feeding webs 21, 22 past a gumming device 25, 29, the two webs being thereby gummed together, a double sheet being severed therefrom at 34, 35, which is forwarded to stops 37. Meanwhile, the top sheet of an adjustable stack 38, which is to form the outer ply a<1> of the bag, is lifted by a suction device 40, gummed on the edge a by a gumming device 45 and forwarded to the double sheet resting at the stops 37, the edge a being turned over by a folding-plate and gummed down to reinforce the mouth opening of the bag. Grippers 54 on the roller 55 now convey the blank forward, the same being creased by rails 56<1>, 57, which co-operate with members 59, 60 on the roller 58, the forward edge being folded back by the roller 62. This folded leading edge then enters a guide 65, adhesive being applied to the rear edge by a gumming device 66, which is then folded over by passage between the rollers 58, 70, whereby the rear edge becomes the leading edge. Preliminary bottom-forming creases are made by the rollers 72, 73 and 74, 75, the bottom being raised inwardly through 90‹ by a roller 81 and formed into the square by a suction roll 83, a guide 82 and a suction pusher 85. A gumming device 94 gums the bottom square, and folding-blades 102 turn over the bottom corners. Cover sheets for the bottom are removed from a stack 104 by a suction device 103 and fed by a suction roller 106 past a gumming device 107 and pressed on to the bag bottom at 111. The finished bags are then conveyed by belts 113, 114 to be stacked at 120.
Patent GB-866798-A (GB)
Title: Improvements in or relating to devices for varying the tension of the bottom thread on the bobbin housing of a sewing machine
IPC: D05B63/00
Filed: 1957-11-14
Abstract: 866,798. Sewing machines. PFAFF A. G., G. M. Nov. 14, 1957 [Nov. 20, 1956], No. 35467/57. Class 112 In a sewing machine bobbin housing provided with a spring which is adjustable by means of a screw for controlling the tension of the bobbin thread, the head of the screw is provided with a knurled edge and is located in a manner such, that in use it is disposed in the space traversed by the loop of the needle thread while avoiding any contact with the latter. As shown, a bobbin housing 1, containing a bobbin 5, is formed in its side wall with a slot 4 through which the bobbin thread 6 passes to be pressed against said wall by the free end of a leaf spring 3 secured to said wall by a screw 2. The pressure exerted by the spring is adjusted by a screw 7, the head 8 of which seats in a depression 9 formed in spring 3. The head is formed with a knurled edge 10, with a concavity 11 in its upper surface, and with a transverse slot 15 the base of which is curved to the radius of the end flange of the bobbin 5, whereby the edge of said flange may effectively engage slot 15 for turning the screw.
Patent GB-325884-A (GB)
Title: Improvements in or relating to air washing and the like
IPC: B01D45/10
Filed: 1928-12-03
Abstract: 325,884. Pneumatic Conveyance & Extraction, Ltd., and Smith, W. A. Dec. 3, 1928. Air, washing.-Air is washed in a water-filled tank by rising tortuously against overlapping longitudinal baffles, and through louvred baffles at the overlapping edges. Longitudinal baffles g, h are horizontal or inclined and carry at their edges transverse louvred baffles k inclined in opposite, directions at alternate levels. The baffles g, h have inclined covers j or are hinged so that sludge may be dislodged and removed at c. The air inlet d extends wholly across the . tank, and air passes out at e, e<1>, f.
Patent GB-960746-A (GB)
Title: A process for preparing finely-divided crystals of phenolic compounds
IPC: C07C37/84
Filed: 1962-09-19
Abstract: In a process for preparing crystals of phenolic compounds having at least one hydrocarbon or hydroxy hydrocarbon radical ortho to the phenolic hydroxyl group, there is included in the solvent from which the phenolic compound is crystallized urea, preferably in the range of .001-1% by weight based on the phenolic compound. The solvent is preferably a liquid hydrocarbon or halohydrocarbon such as paraffin or cycloparaffin having from 5-10 carbon atoms in the molecule such as pentane, hexane, cyclohexane, heptane, octane, iso-octane or decane; the solvent may also be an aromatic hydrocarbon having up to 10 carbon atoms in the molecule e.g. benzene, toluene, xylene or ethyl benzene or a haloparaffin such as chloroform or carbon tetrachloride. Separate solutions of the phenolic compound and of the urea are prepared and the two solutions are then mixed to precipitate phenol and urea either immediately or after cooling.  Many compounds are exemplified of (1) the formula: <FORM:0960746/C1/1> in which R is a hydroxy-benzyl or an alkyl radical, preferably an alkyl radical having up to 8 carbon atoms, and branched on the alpha carbon atom; R1 is alkyl radical, hydroxyalkyl radical, hydroxylaralkyl radical, hydroxyaryl radical or hydroxyaralkyloxy radical, and x is an integer from 0 to 2.  (2) The formula: <FORM:0960746/C1/2> in which each R and R1 is as above, preferably alkyl; Z is a divalent radical selected from alkylidene and sulphur radicals, and n is an integer from 0 to 1; (3): <FORM:0960746/C1/3> in which each R and R1 is as above preferably being alkyl of up to 8 carbon atoms, and X is sulphur, oxygen or mononuclear arylene; (4): <FORM:0960746/C1/4> in which Ar is a hydrocarbon aryl nucleus, preferably mononuclear or having up to 3 fused rings; n is an integer from 0 to 1; R and R1 are preferably alkyl and m is an integer from 1 to 3.  In examples the process applied to the crystallization of 2, 6-di-tertiary-butyl-4-hydroxy-methylphenol and bis(3, 5-ditertiary-butyl-4-hydroxy benzyl) ether is described. Specifications 889,321, 892,261 and 923,520 are referred to.
Patent GB-349101-A (GB)
Title: Improvements in variable velocity ratio gearing
IPC: F16H33/10
Filed: 1929-11-22
Abstract: 349,101. Variable-speed gearing. DAKIN, A. V., 19, Weech Road, West Hampstead, and DAKIN, E. L. V., 13, Bigwood Road, Hampstead Garden Suburb, both in London. Nov. 22, 1929, No. 35792. [Class 80 (ii).] In variable-speed epicyclic gearing of the kind comprising driving and driven elements and a third element automatically controlled in accordance with the load by the inertia of oscillating masses, the masses comprise a rotary flywheel or weighted radial arm mounted so as to oscillate about an axis transverse to its principal axis of rotation. Centrifugal force assists the inertia force and the gear may be combined with a further epicyclic gear. The automatic gear comprises a driving (or driven) shaft 33 carrying compound planet pinions 38 gearing with a driven sun wheel 37 and a controlled sun wheel 39 mounted on a shaft 15 and automatically restrained by the inertia of transverse oscillation, and centrifugal force of two flywheels 23, balanced for end thrust, and rotating about their principal axes with the driven shaft 16. The flywheels are mounted in transverse trunnions 22 on a cage 17 attached to the driven shaft and to the driven sun wheel 37, and are caused to oscillate transversely when any difference in speed exists between the driving and driven shafts, by members 29 feathered on the shaft 15 carrying the controlled sun wheel 39 and having oblique or undulating surfaces engaging rollers 28 or plain flanges on the flywheels. The members 29 are pressed apart by springs 30, or they may be integral with one another. '
Patent GB-853187-A (GB)
Title: Improvements in and relating to the dimerisation of olefines
Inventor: GODDARD REGINALD EDWIN
IPC: C07C2/30
Filed: 1956-11-23
Abstract: The dimerisation or codimerisation of olefines, which are a -olefinic in structure or capable of isomerising to this structure under the reaction conditions, is effected in the presence of an aluminium hydride having at least one hydrogen atom replaced by an alkyl group at above 250 DEG C. and at 225-400 atmospheres.  Nickel may be incorporated in the reaction medium to assist isomerisation to a -olefines.  Suitable olefines include ethylene, propylene, butenes, pentenes and hexenes.  The aluminium compound is preferably the tri-ethyl,-propyl or-butyl. Temperatures of 250-400 DEG C. can be used and on inert, paraffinic, alicyclic or aromatic hydrocarbon diluent may be present.  Reference has been directed by the Comptroller to Specification 775,384.