baber/WOPTO huggingface dataset:
Patent GB-1536828-A (GB)
Title: Selective ethylation of mono alkyl benzenes
IPC: B01J29/40
Filed: 1977-07-04
Abstract: 1536828 Selective ethylation of monoalkyl benzenes MOBIL OIL CORP 4 July 1977 [19 July 1976] 27883/77 Heading C5E Toluene or ethylbenzene are selectively ethylated to produce p-dialkyl benzenes by contact with an ethylating agent (e.g. ethylene or ethyl alcohol) in the presence of a catalyst comprising a crystalline aluminosilicate zeolite, which zeolite is characterized by an activity, in terms of alpha value, between 2 and 5000, a xylene sorption capacity greater than 1 gram/100 grams of zeolite and an ortho xylene sorption time for 30% of said capacity of greater than 10 minutes, said sorption capacity and sorption time being measured at 120 C., and a xylene pressure of 4À5  0À8 mm. of mercury, said crystalline aluminosilicate zeolite having a silica to alumina ratio of at least 12 and a constraint index as herein defined within the range of 1 to 12. Suitable catalysts are obtained by modifying zeolites such as HÀZSMÀ5 with 0À5-40% by wt. of the oxides of P, Sb, B, U, Mg, Zn and/or Ca, or by steaming at 250- 1000 C. or by pre-coking to deposit 2-75 wt. per cent coke thereon.
Patent GB-483292-A (GB)
Title: A method and means of vibrating granular and like materials
IPC: B28B1/087
Filed: 1936-10-14
Abstract: 483,292. Sifting-apparatus. SANDERS, G., and SUREN, F. Oct. 14, 1936, No. 27915. [Class 117] [Also in Group V] Means for applying vibrations to surfaces such as sieves &c. comprises an electric motor 1 or other prime mover driving, through toothed gearing in a gear-box 2, a number of spindles 8 each adapted for connection to the flexible shaft 3 of a mechanical vibrator 4 consisting of an unbalanced mass on a rotating shaft. The vibrator 4 may be attached directly to the sieve &c. or it may be secured underneath a spring- mounted plate 5 which is applied to the work. The vibrator, Fig. 2, comprises a spindle 15 running in bearings in a casing 11 and carrying the unbalanced mass 16. A threaded extension 18 of the spindle is connected to the inner member 20 of the shaft 3 while the outer member is retained by a sleeve 23 and screw cap 22. The shafts 3 may be connected by similar means to the spindles 8. The spindles are preferably so geared together that pairs of vibrators run in opposite directions and the masses 16 may be angularly adjustable on their shafts so that they may be angularly spaced relatively to one another. More than one mass may also be carried on each shaft.
Patent GB-410398-A (GB)
Title: Improved offset printing roller
IPC: B41K1/30
Filed: 1933-10-10
Abstract: 410,398. Frinting-rollers. ARMSTRONG, J. J. V., 12, Church Street, Liverpool.-(Vonwebem, G. ; Dayton, Ohio, U.S.A.) Oct. 10, 1933, No. 27931. [Class 100 (ii).] An offset printing-roller has a resilient impression-receiving surface on a flexible tubular core, the ends of which are held by flexible retaining-means, so that the roller can flex to enable it to contact with a curved surface for applying a design thereto. The core is formed from a helically-wound wire spring 20 preferably covered with a coating of rubber on which cord or string is wound, the cord &c. adhering to the rubber and forming a surface to which will adhere a comparatively thick covering 23 preferably formed of a composition of glue or gelatine and glycerine or other hygroscopic material, or of soft vulcanized rubber or oil. The retaining-means is formed of a chain or flexible cable 25 pivotally secured at its ends to bushings 28, 29 journalled in the core and formed with flanges engaging the ends of the spring. One end of the cable 25 is pivoted to a block 31 formed on one end of a rod 34 passing axially through the bushing 29 and secured in place by a nut 32. Extensions 40 of the bushings carry handles 41 mounted by means of ball bearings 42, to enable the roller to be manually rolled over the intaglio plate from which the design is to be transferred. The spring is tightly wound so as to minimise the distortion of the contacting-surface.
Patent GB-704287-A (GB)
Title: Synchronizing signal separator
IPC: H04N5/08
Filed: 1951-11-28
Abstract: 704,287. Television. RADIO CORPORATION OF AMERICA. Nov. 28, 1951 [Nov. 30, 1950; Nov. 30, 1950], No. 27936/51. Class 40 (3). [Also in Group XL(c)] A circuit for separating synchronizing pulses from the video signals has the level at which separation occurs controlled as a joint function of the gain control voltage and the direct-current component of the video signals. In Fig. 2, signals from radio-frequency stages 36 pass through I.F. amplifiers 40, 42 to diode detector 46 and thence through video amplifiers 48, 56, to the grid of the cathode-ray tube (not shown). The video signals are also applied to the cathode of a separator stage 60 from the anode of which the synchronizing pulses are obtained and applied through amplifier 68 to control the horizontal and vertical deflection circuits 76, 80. An automatic gain-control diode 86 is connected to the second I.F. amplifier and applies a control voltage to the grids of the two I.F. amplifiers. The control voltage may also be applied to the grid of the second video amplifier 54 as indicated by the dotted connection 112. In accordance with the invention the gain control line also extends to the grid circuit of the separator stage 60. The polarity of the video waveform at the cathode of the separator is such that the synchronizing pulse component is negative going, and at the peak of each pulse the grid conducts charging the circuit 106, 108 so that the grid is made negative. By selection of the circuit constant the valve is made to conduct only for signal levels negatively in excess of the video blanking levels hence producing the synchronizing pulses in the anode circuit. The potential developed across circuit 106, 108 represents the D.C. component of the video signals and varies with it, hence the conduction (i.e. separation) level of the separator varies as a function of both the D.C. component and the gain control voltage. Since resistor 106 is common to both the D.C. component circuit and the automatic gain control circuit, a portion of the D.C. component appears on the gain control line. This has the effect of varying the gain with the brightness level of the signal and prevents the cathode-ray tube from being overloaded on sudden increases of brightness level. The application of this control to video amplifier 54 also prevents the stage from being driven into grid current on brightness increases with consequent distortion of the positive-going synchronizing pulses and mis-synchronization of the deflection circuits. In another embodiment, Fig. 1 (not shown), the D.C. component voltage for controlling the separator is derived from a D.C. restorer stage preceding the separator. The separator may comprise a diode or triode.
Patent GB-1412929-A (GB)
Title: Process for electrolytically treating the surface of aluminium  or aluminium alloy
IPC: C23C22/83
Filed: 1974-06-25
Abstract: 1412929 Electrolytically treating surfaceoxidized aluminium KANSAI PAINT CO Ltd 25 June 1974 [4 July 1973 23 July 1973 15 Nov 1973 (2) 19 Nov 1973] 28037/74 Heading C7B Al or an alloy thereof is surface oxidized using steam or hot-water and is subsequently treated electrolytically for at least 5 seconds in an aqueous bath containing at least one water-soluble salt of silicic, boric, phosphoric, permanganic, vanadic, tungstic, molybdic or stannic acid. The oxidation may be effected in the presence of ammonia or an anine e.g. mono-, di- or triethanolamine or dimethylethanolamine. An extensive list of salts is given and treatment may be in a mixed salt bath or in a succession of baths containing the same or a different salt. The following are used in examples; Na 2 O.2SiO 2 , K 2 O.3SiO 2 , NaBO 2 , NaPO 3 , Al(H 2 PO 4 ) 3 , KMnO 4 , Ca(MnO 4 ) 2 .4H 2 O, NH 4 VO 3 , KVO 3 , K 2 WO 4 , K 2 W 4 O 13 , (NHa) 2 WO 4 , K 2 MoO 4 , (NH 4 ) 6 Mo 7 O 24  and K 2 SnO 3 .3H 2 O. A water-soluble salt of chromic acid may also be present. Salt concentrations from 0.1% to saturation are useful using 5-200V A.C. or 5.300V D.C. Alloys treated may contain SiŒMg, Mn or Mg. The substrate may be pretreated successively in HNO 3  or H 2 SO 4 , NaOH and optionally HNO 3  again, and the final coating may be heated at 150-250‹C for hardening.
Patent GB-1524476-A (GB)
Title: Acoustic wave transmitter-receiver devices for use in doppler navigation systems
IPC: G01S15/60
Filed: 1976-07-06
Abstract: 1524476 Doppler navigation device INSTITUT FRANCAISE DU PETROLE and THOMSON CSF 6 July 1976 [7 July 1975] 28084/76 Heading G1G An acoustic Doppler navigation transmitterreceiver device has at least one pair of assemblies S 1-5 , S 1-5 , each assembly comprising an array of equispaced transducers parallel to any assembly axis, the assembly axes of the or each pair being symmetrically inclined to a vertical axis with the projection of the transducer spacing on the vertical axis equal to a whole number of wavelengths of the transmitted acoustic wave, the assemblies of the or each pair being fed in phase opposition. As described the transducer assemblies consist of equispaced transducers on a frame (3), Fig. 1 (not shown) secured to a vehicle. The Doppler shifted frequencies in the direction of the subsidiary lobes B, C distort the frequency shift detected along the direction of the main frequency lobe A (arranged to be at 30 degrees to the vertical) and this distortion, Fig. 3 (not shown) is counteracted by choosing the transducer separation so that the secondary lobe B is vertical, the phase opposition of the assemblies in the or each pair resulting in destructive interference in the vertical direction. Any intensity reduction along the main lobe direction is minimized by making the projection of the separation distance D on to either assembly axis an odd number of half wavelengths of the acoustic wave. A directional compensator (not shown), used to obtain maximum extinction in the vertical direction, comprises an even number of transducers in a line equispaced by a whole number of wavelengths. Summing devices (4, 5) Fig. 7 (not shown) adds the compensator and Doppler signals.
Patent GB-1442921-A (GB)
Title: Refractory heat insulating structures
IPC: F27B9/34
Filed: 1974-06-25
Abstract: 1442921 Heat insulated pipe PLIBRICO CO 25 June 1974 [25 July 1973] 28158/74 Heading F2P [Also in Division F4] In a furnace for reheating steel billets or slabs, water-cooled pipes for supporting skid rails are heat-insulated by prefabricated heatinsulating refractory components. Fig. 4 shows precast heat-insulating components 20 and 30 secured around a vertical water-cooled pipe 16 by metal bands 25. The bands are attached to the components by pin means 32 embedded in the components and are fastened together by nuts 45 and bolts 46. The nuts are welded to the ends 27 of the bands and the bolts pass through openings in the ends 28. Access openings 37 to the bolts have been filled with refractory material. Fig. 7 shows a pipe 18 with a skid rail 19 and three precast heat-insulating components 50, 52 and 54. Fig. 10 shows a pipe 18 with a skid rail 19, one precast heat-insulating component 90 and hand-applied heat-insulating material 92. Bolts 102 which anchor the band 56 and component 90 to the pipe are located above the transverse median plane of the pipe.
Patent GB-1431738-A (GB)
Title: Tool changing apparatus for a machine tool
IPC: B23Q3/157
Filed: 1974-06-25
Abstract: 1431738 Tool changers; drilling machines DEVLIEG MACHINE CO 25 June 1974 [31 Aug 1973] 28162/74 Headings B3B and B2C A tool changing apparatus for a machine tool 10 having a spindle 24 adapted to receive the shank of a tool 36 comprises an indexable tool storage magazine 30 mounted independent of the machine tool and adapted to releasably carry a plurality of tool holders at spaced locations, each tool holder supporting a tool by engagement with a shank thereof, said magazine being indexable for presenting tool holders and their tools successively to a tool removal position, a shuttle 34 movable along a frame supported from the magazine mounting and operable for engaging a tool holder in the tool removal position and removing it from the magazine 30 and advancing it toward the spindle to an interchange position, and an interchange mechanism 32 operable for removing a tool from a tool holder supported by the shuttle in the interchange position and inserting the tool in the spindle, said interchange mechanism being adapted for engagement with a portion of the tool projecting from the tool holder. The magazine 30 is mounted on a free standing frame not attached to the machine tool, and a further frame portion extends therefrom to support the shuttle 34. The shuttle 34 is driven along bar ways by a chain drive actuated by a rotary hydraulic motor. The rotary hub of the magazine drives a shaft which carries a plurality of cams (70) (Fig. 5, not shown) which actuate switches (76) to enable the rotary position of the magazine to be maintained and a coded tool position to be brought to the tool removal position. Each tool holder is held in the magazine by a latch 132 engaging a groove in the tool holder (Fig. 6, not shown). At the tool removal position the latch 132 is hydraulically released and the tool holder simultaneously latched to the shuttle. The interchange mechanism 32 comprises a pair of oppositely movable arms (264) (Fig. 12, not shown) actuated by a rod (256) movable through a shaft (216). The shaft (216) is rotated through 45 and 180 degree steps by an hydraulic motor 232 and is moved axially by an hydraulic cylinder 218. The interchange mechanism 32 is mounted on a vertically movable spindle head 22 which is moved to a predetermined tool change position to align with the shuttle 34.
Patent GB-301375-A (GB)
Title: Improvements in or relating to the mounting of vehicle shock absorbers
IPC: B60G13/04
Filed: 1928-10-02
Abstract: 301,375. Bugatti, E. Nov. 28, 1927, [Convention date]. Vibration-dampers.-The operating band or link of a shock-absorber connecting the frame and axle of a vehicle is arranged horizontally so that operating movements of the shock-absorber increase at a much higher rate than displacement of the axle from its normal position. In the arrangement shown in Fig. 3, the band b connecting the axle d to a one-way shock-absorber a is normally horizontal so that small displacements of the axle are practically unaffected, while larger displacement above or below the normal position are resisted by the shock-absorber to a substantial degree. In a modification a rigid link similarly arranged horizontally operates the arm of a friction-disc type of shock-absorber carried by the frame.
Patent GB-339995-A (GB)
Title: An improved hurricane lantern
IPC: F21V37/02
Filed: 1929-09-18
Abstract: 339,995. Shell-Mex, Ltd., and Richardson, A. W. Sept. 18, 1929. Wick burners.-In a hurricane lantern adapted to burn inferior kerosene air entering through apertures 4 in the globe plate 3 is defected by a deflector 9 in a zone adjacent the burner cone 2. The deflector may be carried by a regulator 8, Fig. 2, which is pressed against. the plate 3 by the globe 7 and may be turned to regulate the admission of additional air through apertures 5 in the plate 3. When the apertures 5 are dispensed with the deflector 9 may be integral with the plate 3 as shown in Fig. 4. The apertures, 4 are covered by wire gauze 13 to prevent draughts.
Patent GB-1000127-A (GB)
Title: Apparatus and method of changing colour work in an embroidering process
IPC: D05C11/16
Filed: 1964-07-09
Abstract: 1,000,127. Sewing machines. I.A.S. BICOR CORPORATION. July 9, 1964 [July 17, 1963], No. 28369/64. Heading D1G. An embroidery machine comprises a plurality of sets of parallel needles, means for shifting said sets to a position in which only the needles of a selected set are in operative position, and means to actuate only the needles of the set in the operative position. A needle bed 32 is formed with slots 31 slidably supporting horizontal needle bars 26 each carrying a needle 20, the latter being threaded consecutively with red, yellow and green threads to provide three sets of needles. The arrangement is such that the needle bed may be shifted laterally to position the needles of a selected set in an operative position in alignment with holes 22 in a throat plate 23, when only the selected set is actuated to produce embroidery of the corresponding colour in a workpiece 21. The needle bars are retained by a cover plate 33 in bed 32, and the latter is secured to a block 34 which is in turn secured to a pair of parallel rods 38, 39 slidably mounted in a fired block 50. A bar 41, rigid with the rods 38, 39, carries a follower 42 engaging a cam slot 43 in a disc 44 which may be turned, either manually or by automatic means, to shift a selected set of needles to the operative position. The needle bars are formed with two series of aligned notches 29 and 30. A bar 52, fired to block 50, is formed with projections 56 which enter the notches 30 of the inoperative needle bars. A bar 53, fired to a crosshead 65 slidable on a fired rod 68, is formed with projections 54 which enter the notches 29 of the operative needle bars. Crosshead 65 is connected by a link 60 to a crank 58 on a shaft 59, oscillation of which thereby serves to reciprocate the operative needle bars. The tips of the inoperative needles are supported by forked rods which may be lowered to permit threading of the needles.
Patent GB-688685-A (GB)
Title: Improvements in or relating to ball joint couplings
IPC: F16C11/10
Filed: 1949-11-07
Abstract: 688,685. Ball-and-socket joints. LAMBERT, G J. W. Feb. 7, 1951 [Nov. 7, 1949; May 25, 1950], Nos. 28429/49 and 13145/50. Class 65 (ii) [Also in Group XXVIII] In a ball-and-socket joint comprising means for clamping the ball in adjusted position, the latter is urged against its housing by a clamping member moved by actuating means, and a component having a bevelled side face matching with and seating against a cone-shaped end of the clamping member is interposed between the latter and the actuating means, the interposed component and the actuating means being free of and capable of floating within the housing. As shown, the joint constitutes a coupling for two pipes 23, each formed with a ball end 22 disposed within a housing 21. The balls are acted upon by clamping members 24, 25 having coneshaped ends 30, 29 respectively, seating against correspondingly shaped ends of a split ring 27 enclosed in a collar 33 freely disposed in the housing. The split ring is adapted to be closed by means of the end of a handle 34 screwed into the collar, for urging the balls apart. The member 24 has a tubular extension 26 slidably disposed in the member 25, a fluid-tight gland 19 being provided therebetween. A compression spring 31 is interposed between the collar and the member 25. In a modification adapted to accommodate an insulated electric cable, the extension 27 is dispensed with and the ring is made in two pieces. In a further modification the collar is dispensed with and the ring is made in two pieces adapted to be drawn together by the end of the handle which passes freely through one piece and screws into the other. It is stated that any number of balls may be fitted in the housing. The first Provisional Specification describes a construction in which the interposed component is omitted, one clamping member being in two pieces adapted to be drawn together by the screwed end of an actuating handle, and the other clamping member having a stem seated within a socket in the first clamping member. The second Provisional Specification describes a construction in which an internally screwthreaded sleeve, rotatable by gearing, engages oppositely screw-threaded extensions of the clamping members for moving the latter apart or towards each other.
Patent GB-159001-A (GB)
Title: Improvements in and relating to elastic fluid turbines
IPC: F01D5/02
Filed: 1919-11-17
Abstract: 159,001. British Thomson - Houston Co., Ltd., (General Electric Co.). Nov. 17, 1919. Securing rotors on shafts.-The rotor 6 is secured to the shaft 5 by means of a ring 12 shrunk on and keyed to the shaft and having integral tongue-pieces 10 dove-tailed into the bore of the rotor in staggered relation to an equal number of keys 13. The bore of the ring 12 is recessed under the tongue-pieces. In a modification, two rings 14, 9<a> are used, and are secured in place by two series of dovetailed keys 16, 17.
Patent GB-888151-A (GB)
Title: Coating process and composition
Inventor: SIMERL LINTON EARL
IPC: A01N63/02
Filed: 1959-08-20
Abstract: In the manufacture of a preservative wrapping or packaging material for foodstuffs, e.g. meat, fish, poultry, a base sheet, e.g. cf paper, regenerated cellulose film, cloth, plastic film, is coated or impregnated with a solution comprising 2 to 5 grams of an antibiotic dissolved in a litre of an aqueous solution containing 25 to 75% by weight of a monohydric alcohol, e.g. ethyl, propyl, or isopropyl alcohol, which contains 2 to 3 carbon atoms per molecule.  Suitable antibiotics include chlortetracycline, tetracycline, oxytetracycline, polymixin B, neomycin or streptomycin, singly or in admixture, the treated sheet preferably containing 5 to 25 milligrams per square metre of surface area.  The solution preferably has a surface tension of less than 35 degrees per centimetre and may be applied to the base sheet by spraying, roller coating or immersion of the sheet in the solution followed by gentle drying.  The sheet material may be lacquered on one surface, e.g. with nitrocellulose.
Patent GB-1311783-A (GB)
Title: Multitrack magnetic head assemblies
IPC: G11B5/29
Filed: 1970-06-12
Abstract: 1311783 Magnetic heads MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 12 June 1970 [12 June 1969 13 June 1969 10 Sept 1969 20 Sept 1969(2) 24 Nov 1969] 28583/70 Heading G5R A multitrack magnetic head includes a stack of units each comprising a wound 22, gapped 23 annular core 21 mounted on a support 24. Each support is laminated of beryllium copper 25 and pemalloy 26 for screening and has apertures 27, 27<SP>1</SP> in all or only the outer laminations to receive the winding 22 of its own and adjacent units. The stack is located in a frame 29 in a screening can 30. A variety of support cross sections are described to accommodate associated amplifiers and transformers.
Patent GB-187623-A (GB)
Title: Improvements in railway rail joints
IPC: E01B11/08
Filed: 1922-10-20
Abstract: 187,623. Hyle, J. A., and Whitemam, G. W. Oct. 20, 1921, [Convention date]. Rail joints.-Fish-plates 3 have a thin curved web 9, upper and lower parts 5, 7 formed with an excess of metal and enlarged at 6, 8, and are secured in place by wedge bars 15 and fishbolts 16. The two inner bolts pass through an elongated opening in the plates 3 which enables the parts 5, 7 to be expanded and flexed when the inner bolts are tightened.
Patent GB-1026701-A (GB)
Title: Apparatus for the treatment of the deafness caused by diseases of the middle and internal ear
IPC: A61F11/04
Filed: 1963-07-19
Abstract: 1,026,701. Electromedical apparatus. A. MANFREDI. July 19, 1963 [July 23, 1962], No. 28644/63. Heading A5R. An electrical device for treating deafness with symmetrical radio frequency current pulses spaced by an amount not greater than the pulse width comprises a radio frequency oscillator ORF, the output of which is modulated by an audio frequency current derived from the secondary coil of a transformer T, the primary coil of which is connected to an audio frequency oscillator OFA, the radio frequency oscillator being monitored by a cathode ray oscilloscope. The anode of an oscillator valve V of a radio frequency oscillator ORF is fed, through a transformer T and a variable resistor RV, with amplified audio frequency current generated by an audio frequency oscillator OFA or a microphone M. The modulated output current is monitored by a cathode ray oscilloscope ORC and fed to electrodes E which are applied to the skin. The electrodes either make conductive contact with the skin or are insulated therefrom. A low frequency oscillator (Fig. 4 not shown) may also be connected to the electrodes through a switch, so that low frequency current or radio frequency pulses may be fed selectively to the electrodes.