baber/WOPTO huggingface dataset:
Patent GB-1068135-A (GB)
Title: Suspension polymerization
IPC: C08F2/20
Filed: 1965-02-18
Abstract: In a suspension polymerization process, a mixture consisting essentially of methyl methacrylate and a -methyl styrene and a vinyl polymerization catalyst which is monomer soluble and water insoluble is suspended in an aqueous medium containing a water-soluble polymeric suspending agent of formula comprising the recurring structural unit <FORM:1068135/C3/1> where R is hydrogen or methyl and Z is hydroxyl or carboxyl, and the monomer mixture is polymerized at 60 DEG  to 150 DEG  C. for one to eight days, while maintaining the reaction medium at a pH of 5 to 9.  Other monomers e.g. acrylonitrile, acrylamide, maleic acid, ethyl acrylate, decyl acrylate, vinyl acetate, vinyl fluoride and vinylidene chloride may be included in the monomer mixture. The suspending agent is e.g. polyvinyl alcohol derived from polyvinyl acetate at least 80% hydrolyzed, polymethacrylic acid or polyacrylic acid.  Peroxide, persulfate or azonitrile catalysts may be used, cyclohexanone peroxide being preferred. Others specified are tertiary butyl peracetate, ditertiary butyl diperphthalate, tertiary butyl perbenzoate and methyl ethyl ketone peroxide. Additional catalysts with different half-lives may be used e.g. benzoyl, lauroyl or caprylyl peroxide or azo-bis (isobutyronitrile) for use as the temperature is raised to 90 DEG  C., and dicumyl peroxide or ditertiary butyl peroxide for the final stage, when the temperature may be raised to 150 DEG  C. Buffers may be required to maintain the pH at 5 to 9, e.g. Na2HPO4, NaHPO4, Na3PO2, K2HPO4, KH2PO4 or K2CO3. Examples are given of the production of methyl methacrylate/a  - methyl styrene copolymers. Tertiary dodecyl mercaptan is used as a chain transfer agent in Examples 7 and 10.  Reference has been directed by the Comptroller to Specification 836,837.
Patent GB-1450707-A (GB)
Title: Copier malfunction protection
IPC: B65H7/06
Filed: 1973-12-04
Abstract: 1450707 Programmed copying XEROX CORP 4 Dec 1973 [5 Dec 1972] 07215/76 Divided out of 1450704 Heading G2A The disclosure is identical with that of Specification 1450704 but the claims are concerned with means for preventing restarting of copying in the event of a premature shut-down until the malfunction has been corrected.
Patent GB-350437-A (GB)
Title: Improvements in or relating to starting devices for internal combustion and other engines
IPC: F02N15/06
Filed: 1930-03-05
Abstract: 350,437. Operating lifting-jacks; tyre inflation apparatus &c. on motor vehicles. TRILL, T. F., Whiligh Garage, Wadhurst, Sussex. March 5, 1930, Nos. 7266 and 17972. [Class 79 (iii).] An electric starter for motor-vehicle engines is provided with means for reversing the current through the starting motor, for instance to enable the motor, when reversed, to be used to drive auxiliary apparatus such as tyre inflators or lifting- jacks. For this purpose the motor shaft 63 may be provided with a universally jointed extension 65 adapted to drive a transmission shaft 71 directly through a clutch coupling 69, 70 or through crown reversing gearing 68, 81, 75, the clutch member 69 and crown wheel 75 being connected by arms 79 so as to be operable in unison by a lever 76. The shaft 71 may operate lifting jacks through a shaft arranged transversely of the chassis and carrying bevel wheels slidable into engagement with bevel wheels connected to the jacks, Fig. 5 (not shown).
Patent GB-1528513-A (GB)
Title: Manufacture of cyclohexanone oxime
IPC: C07D223/08
Filed: 1976-02-25
Abstract: 1528513 Cyclohexanone oxime BASF AG 25 Feb 1976 [26 Feb 1975] 07387/76 Heading C2C Cyclohexanone oxime is prepared by reacting cyclohexanone with an aqueous hydroylammonium/ammonium sulphate solution at a temperature above the melting point of Cyclohexanone oxime by the countercurrent method in the absence of solvents and neutralizing and/or buffering salts at a pH of the aqueous phase of 0À5 or less until a state of equilibrium is reached, removing the resulting cyclohexane oxime from the aqueous phase, extracting the aqueous phase with cyclohexanone and subjecting the aqueous phase to steam distillation. The cyclohexanone oxime may be subjected to gas-phase rearrangement to produce caprolactam.
Patent GB-265410-A (GB)
Title: Improvements in fuel burners
IPC: F23D1/00
Filed: 1926-03-19
Abstract: 265,410. International Combustion, Ltd., and Rosencrants, F. H. March 19, 1926. Pulverulent-fuel burners.-A mixture of fuel, particularly pulverized fuel, and a portion of the combustion air is supplied tangentially to an annular chamber f and issues through an annular opening g in the face of the chamber f into a cylindrical chamber h where it mingles before passing into the combustion chamber with currents of air which enter under forced or natural draught through slots i in the periphery of the chamber h and are directed towards the axis of the chamber by curved baffles k. The baffles k are mounted on pins l which are pivoted on the front and back rings m. The pins l carry crank arms n connected to a ring o which may be turned by a lever q operating through worm-gear p so as to vary the inclination of the baffles k. The ring in of the chamber h is formed as a box r having a perforated conical inner face and a slotted side so as to allow the passage of air to cool the opening into the combustion chamber.
Patent GB-550107-A (GB)
Title: Improvements in or relating to turntables
IPC: B61J1/04
Filed: 1941-06-18
Abstract: 550,107. Turntables. KING, Ltd., G. W., and KING, D. M. June 18, 1941, No. 7730. [Class 10,4 (ii)] A turntable carries bearing rollers 17 running on a circular track 19, and a driving track 20 engaged on opposite sides by rollers 22, 23, the rollers 22 being driven by a suspended electric motor 24, while 23 are resiliently mounted idler rollers. The motor is radially and axially adjustable, while bars 26 in guides 27 prevent angular movement. The table comprises radial arms 11 connected by peripheral arms 13, and supporting boards &c. 14. The tracks 19, 20 are connected to 11 by brackets 18, 21. In a modification the rollers 17 are mounted on the underside of 20 and run on 19 also arranged under 20. In another form, rollers 17 are mounted in the base of the trough 16 and support the table by engaging the underside of 20. Specification 524,750, [Group XXXI], is referred to.
Patent GB-622421-A (GB)
Title: Improvements relating to heat interchange apparatus
IPC: F28F9/18
Filed: 1947-03-21
Abstract: 622,421. Tubular heat-exchangers. SERCK RADIATORS, Ltd., and GARNER, E. March 21, 1947, No. 7783. [Class 64(iii)] In a heat exchanger of the type comprising an assembly of thin metal tubes extending between headers, a reinforcing plate 6 having a plurality of parallel channels 7 formed therein through which the adjacent ends of the tubes 1 extend, and which serve to support the said ends of the tubes, is located at one or both ends of the assembly in close contact with the adjacent header plate 3, and the bases of the channels are perforated to receive the tubes. To strengthen the assembly, solid bars 10 of the same size and form as the tubes 1, may replace those tubes which are adjacent to the ends of the headers. In a modification, the channels 7 may be formed by a folding operation and the sides of the channels then have two thicknesses of metal in close contact, and the base of each channel coincides with the flat portions of the reinforcing plate 6 lying between the channels. The tube section may be of narrow elongated form with flat sides and rounded ends or it may be of narrow elliptical shape. The header plate adjacent to the reinforcing plate or each header plate may be formed with apertures or slots having lips 5 for receiving the tubes.
Patent GB-920682-A (GB)
Title: Improvements relating to the purification of gases
Inventor: THOMPSON ROBERT JOSEPH STANLEY
IPC: C10K1/20
Filed: 1960-03-05
Abstract: Hydrogen sulphide is removed from gaseous mixtures by contacting the gaseous mixture with iron oxide dispersed in a plurality of containers through which the gaseous mixture is passed in sequence, the order of the sequence being changed at intervals, characterized in that sulphur dioxide is added to the gaseous mixture after substantially the whole of the hydrogen sulphide originally present has been removed, and then passing this mixture through the remaining containers of iron oxide.  In addition to changing the order of sequence, the direction of flow may also be changed, the changes being so made that the water content of the iron oxide does not fall substantially below its initial value.  Preferably the sulphur dioxide is added to the mixture as it enters either the ultimate or the penultimate container in the sequence.  Specification 920,681 is referred to.
Patent GB-253242-A (GB)
Title: Improvements relating to electric switches
IPC: G07F15/00
Filed: 1925-03-24
Abstract: 253,242. Wall, G., and Metropolitan- Vickers Electrical Co., Ltd. March 24. 1925. Switches, quick-action.-Fixed switch contacts 1 are bridged by contacts 2 carried by a lever 3 pivoted at 4 and urged to the open position by a spring 8 attached to a crank pin 6. This pin rests on the tail 21 of a gear sector 20 mounted on a spindle 19 and engaging a pinion 22 which is secured on the same shaft as an arm 24 which normally rests on a trip finger 30. When a pin 31 presses the finger 30 against the action of a spring 33 from under the arm 24, the switch begins to open, under the action of the spring 8 and the opposing action of a weaker spring 26 connected to the sector 20. Before the contacts 2 leave the contacts 1, the pin 6 rides off the tail 21, and then only the spring 8 is operated, and causes a quick break, the spring 26 resetting the sector 20 to its initial position. To reclose the switch, a shaft 15 is rotated so that a part of a gapped gear 12 thereon engages a gear sector 11 secured to the lever 3 and turns the latter clockwise, until the spring 8 has passed its top dead-centre. In this position the sector 11 comes opposite a gap in the gear 12, and the spring 8 snaps the contacts 2 into engagement with the contacts 1, thue restoring the apparatus to its initial position. The switch can be incorporated in a prepayment meter, in which case the shaft 15 is operated by a slotted disc 17 forming a flange coupling with the coin receiver, and the pin 31 is operated by a differential mechanism 32 dependent on the joint action of the coin mechanism and the meter proper.
Patent GB-515933-A (GB)
Title: Improvements in curtain suspension devices
IPC: A47H15/04
Filed: 1938-03-16
Abstract: 515,933. Curtain suspensory devices. BYSON APPLIANCE CO., Ltd., and HARRISON, E. March 16, 1938, No. 8090. [Class 52 (v)] A curtain suspension for use on an I- or like section rail comprises a loop or stirrup c made of thermoplastic or thermo-setting material and pivotally connected thereto either a one piece, similarly y moulded glider body having curved bosses j to engage the rail or gliders or rollers k, the loop having on each limb a boss f and an integral axle pin g. The loop may have a gap d disposed between two strengthening ribs b to locate the ring or hook e. Specification 510,435 is referred to.
Patent GB-115714-A (GB)
Title: Improvements in the Manufacture of Buttons.
Inventor: GAUNT CHARLES FREDERICK
IPC: A44B1/24
Filed: 1917-06-08
Abstract: 115,714. Gaunt, C. F. June 8, 1917 Buttons.-In uniform and like buttons of the type comprising a thin stamped sheet-metal front part of dome shape, which fits over and is closed around a solid back part carrying the attachment loop, the back part B is made of stout solid leather, turned, pressed, or otherwise shaped to fit against the sheet-metal front part A, or, as shown, against the strengthening-disk 3. The pattern or other device stamped on the metal front part may also be stamped on the leather back part, to enable the two parts to fit more closely together. As shown, the shanks of the attachment loop 5 may be passed through the leather back part and strengthening-disk, the ends 8 then being clinched so as to lie in recesses 9 in the strengthening-disk.
Patent GB-435271-A (GB)
Title: Improvements in or relating to controlling arrangements for rolling mills
IPC: B21B37/60
Filed: 1934-03-15
Abstract: 435,271. Rolling. GURNEY, N. R. D., 262, Withington Road, Chorlton-cum-Hardy, Manchester, and ASSOCIATED ELECTRICAL INDUSTRIES, Ltd., Crown House, Aldwych, London. March 15,1934, No. 8230. Drawings to Specification. [Class 83 (iv)] [See also Group XXXVIII] The distance between the rolls of a rolling- mill is automatically adjusted for the successive traverses of the material by a Wheatstone bridge arrangement wherein a bridging relay controlling the roll-adjusting motor is connected between a potentiometer arm, shifted by the motor and each one in turn of a number of potentiometer tappings capable of pre-setting in accordance with the desired successive distances between the rolls. For fine adjustment purposes a second similar bridge system is provided. Instead of employing one potentiometer common to a number of presetting dials, individual potentiometers may be used.
Patent GB-329743-A (GB)
Title: Improvements in or relating to hinges or like devices for the mounting of swinging doors, shutters, panels and the like
IPC: E05F1/06
Filed: 1929-03-14
Abstract: 329,743. Tonks, W. H. March 14, 1929. Rising hinges. - A rising hinge for swinging doors and like members comprises two anti-friction rollers g mounted on a single pin f and located on opposite sides of a vertical plane containing the axis of the hinge pin. The rollers engage inclines k on the other element of the hinge. The. rollers may be mounted on the stationary member or on the movable member.
Patent GB-126171-A (GB)
Title: Improvements in Devices for Subdividing or Atomizing Liquids.
IPC: F02M67/12
Filed: 1918-05-17
Abstract: 126,171. Mirrlees, Bickerton, & Day, and Moore, H. May 17, 1918. Air-pressure sprayers; splashing-apparatus. - An atomizer, more particularly for atomizing liquid fuel for furnaces or for use in spraying fuel into the cylinders of internal-combustion engines, comprises a stationary member and a relatively longitudinally movable member arranged one inside the other, the adjacent surfaces of which have projections formed in series or rows in such a manner that the projections on one member mechanically scrape between those on the other, and that in every position a path is left for the liquid to pass through the device. Fig. 5 shows a form of apparatus for delivering liquid fuel to an internal-combustion engine. Fuel is delivered by the passage f and air by the passage h to the chamber g. The outlet from the chamber is controlled by a valve i. A sleeve b carrying one series of projections is carried by the valve spindle, and the other series is carried by a sleeve c.
Patent GB-1153083-A (GB)
Title: 2-Hydroxymethylindole Quinones and process for preparing the same
IPC: C07D209/12
Filed: 1967-02-21
Abstract: 1,153,083. 2-Hydroxymethylindole quinones. KYOWA HAKKO KOGYO CO. Ltd. 21 Feb., 1967 [5 March, 1966], No. 8298/67. Heading C2C. Novel bacteriostatic indole 4.7 quinones of the formula wherein R 1  and R 3  are methyl or ethyl, and R 2  is hydrogen, methyl, or ethyl, are prepared by nitrating an indole of the formula wherein R 4  is methyl or ethyl, reducing the 2- carboalkoxy group in the resulting 4-nitro-indole to form the corresponding 2-hydroxymethyl-4;- nitro-indole, hydrogenating this compound and oxidizing the resulting 2-hydroxymethyl-4-aminoindole with an alkali metal nitroso disulphonate.
Patent GB-938600-A (GB)
Title: Fuel injection pumps
Inventor: SOLTAU JOHN PETER
IPC: F02M59/14
Filed: 1961-03-07
Abstract: 938,600. Fuel injectors. JOSEPH LUCAS (INDUSTRIES) Ltd. Feb. 21, 1962 [March 7, 1961], No. 8302/61. Class 7(3). [Also in Group XXVIII] A crankcase pressure-actuated fuel injection pump (see Group XXVIII), for a two-stroke engine, is connected to and discharges into the crankcase or the transfer passage of the engine. The pump outlet 7 is controlled by a spring loaded check valve 20.
Patent GB-492609-A (GB)
Title: Apparatus for dialysing liquids
IPC: B01D63/08
Filed: 1937-03-22
Abstract: Apparatus for dialysing liquids has a bottom surface steeply inclined to one or more outlets, whereby separated colloid may be withdrawn during the operation.
Patent GB-313988-A (GB)
Title: Improvements in and relating to crown cork bottles
IPC: B65D1/02
Filed: 1928-03-20
Abstract: 313,988. Davies, W. H.; and Bray, T. A. March 20, 1928. Crown corks. - Relates to bottles of the crown-cork type having outwardly curved necks surmounted by flanges and having slots therein to facilitate opening by a coin &c. According to the invention these slots 3 which do not project beyond the common tangent to the flange and neck of the bottle are oblique or are provided with oblique portions 4 to facilitate the insertion of the coin. Specifications 4596/09 and 267,708 are referred to. Reference has been directed by the Comptroller to Specification 312,957.
Patent GB-380379-A (GB)
Title: Improvements in or relating to the packing of goods sensitive to the weather or the like
IPC: B65D65/42
Filed: 1932-03-22
Abstract: 380,379. Packing foodstuffs. LOEBEN, I., 5, Rosenhagen, Brunswick, Germany. March 22, 1932, No. 8442. [Class 94 (i).] Foodstuffs, confectionery, &c. are packed by enclosing in a wrapper and immersing the packet for a short time in molten paraffin or other animal, vegetable, or mineral wax, and immediately chilling in ice-cold water. The wrapping may be of metal-foil and crepe tissue paper, or may comprise a carton, sealed where necessary with paper strips. Carnauba wax, Japan wax, pulverized burnt magnesia, or asbestos powder may be added to the wax. Dyes may also be added, and a second coating of wax or lacquer may be superposed to give the packet the appearance of wood, marble, porcelain or bronze.
Patent GB-469596-A (GB)
Title: Improvements in and relating to electric switches with selfgenerated arc-quenching gas
IPC: H01H33/76
Filed: 1937-03-23
Abstract: 469,596. Gas - blast switches. BRITISH THOMSON-HOUSTON CO., Ltd. March 23, 1937, No. 8538. Convention date, March 23, 1936. [Class 38 (v)] In a switch having an arcextinguishing chamber 1 presenting inner walls of material, such as hard rubber, capable of yielding an arc-extinguishing gas due to the heat of the arc formed between a pair of cooperating relatively movable contacts, one of which 2 is fixed ' at or near the chamber-end whereas the other 4 is movable within the chamber, in order that both large and small currents may be interrupted, the contact 2 is enclosed on its side located remote from contact 4 by an auxiliary chamber 3, capable of being put into communication with chamber 1 and containing a piston 5 which is arranged so as to vary, in response to give variations of gas-pressure, the chamber-volume put into communication with chamber 1. The piston 5 is normally urged by spring 7 against contact 2, and when it returns after being displaced from that position, it drives a blast through the chamber 1 when contact 4 leaves the lower end thereof. An adjustable vent 8 controls the action of the switch.
Patent GB-227676-A (GB)
Title: Method and apparatus for clarifying sewage water
IPC: C02F3/28
Filed: 1924-04-04
Abstract: 227,676. Dorfm³ller, H. April 4, 1924. No Patent granted (Sealing fee not paid). Gravity-separation apparatus; plant. - Sewage is passed continuously through a settling-chamber in which floating ,and heavy matters separate and pass through apertures at top and bottom respectively into a chamber where they are subjected to anerobic decomposition. Fig. 1 shows a cylindrical underground tank 2 with central bulge 5 and a cylindrical partition 6. Sewage from the inlet 11 is distributed by a wedge-shaped guide 13 and passes round to an outlet 12. Settled and floating matter passes through slits 8, 9 into the central decomposition chamber. A rectangular tank, Fig. 3, is formed with settling passages 19, 20 through which the sewage is passed from end to end. Slits 21, 22 allow of the discharge of the settled and floating matter into the decomposition chamber. The latter may, in each form of apparatus be provided with hollow columns 32, Fig. 5, in which are tubular shafts 34 provided with floats 37 and depending pipes 36. The movement of the floats causes bacteria propagated at the bottom of the column to pass out through apertures 33, and gas discharged through the pipes 36 agitates the floating matter.
Patent GB-468869-A (GB)
Title: Improvements in or relating to vehicle windscreens
IPC: B60S1/48
Filed: 1936-03-23
Abstract: 468,869. Cleaning windscreens. CORCORAN, B. March 23, 1936, No. 8556. [Class 138 (i)] [Also in Group X] Hot water is fed to a spray-pipe 14 along the top of a windscreen through a tap-controlled pipe leading up the side of the screen to that by turning on the tap the screen may be cleaned. The water is taken from the return branch 8 of a windscreen and bodyheating pipe 5 through which hot water from the engine cooling system is circulated.
Patent GB-372722-A (GB)
Title: Improvements in assembling blades in the manufacture of turbines
IPC: B23P15/00
Filed: 1931-06-22
Abstract: 372,722. Steam turbines. F A I RWEATHER, H. G. C., 65, Chancery Lane, London.-(Allmõnna Svenska Elektriska Aktiebolaget ; Võsteras, Sweden.) June 22, 1931, No. 8557/32. Divided on 372,139. [Class 110 (iii).] Relates to the assembling of rings of turbine blades. The blades 1 are clamped between rings 11, 12 with their roots exposed, and the roots 2 at one side are cut or ground and brought against a face-plate 13. The roots on the other side are then machined to dovetail section, as at 8, and a supporting ring 14 is attached by rolling or pressing. The blades are then turned over and another ring is similarly sealed to the other roots. Washers in the form of split metal rings 15 are placed between the clamping rings and the blades to permit of removal of the finished blade ring.
Patent GB-780351-A (GB)
Title: Improvements in or relating to pulse time modulators
IPC: H03K7/08
Filed: 1955-03-24
Abstract: 780,351. Pulse modulation. TELEFONAKTIEBOLAGET L. M. ERICSSON. March 24, 1955 [March 24, 1954; Nov. 12, 1954], No. 8640/55. Class 40 (5). Phase modulated pulses are obtained by applying the modulating signal and a periodic control signal to a back-to-back pair of diodes so as to vary the point of conduction in each cycle of the control signal, differentiating the result duration modulated pulses to obtain phase modulated pulses and feeding back a part of the output to the input. A sawtooth or sinusoidal control voltage is applied at 1, 2, Fig. 1, to a pair of back-to-back diodes 4, 8, diode 4 being biased by a negative source at 6 to be normally conducting, whilst diode 8 is blocked. A positive bias is applied to both diodes at 13 via a high resistor 12. The voltage drop across resistor 12 when diode 4 is conducting is sufficient to prevent diode 8 from being rendered conductive by source 13. During the positive half cycles of the control voltage at 1, 2 however, diode 4 is blocked and diode 8 conducts. The point in the cycle at which it conducts is controlled by the modulating signal applied via transformer 15. The variable duration pulses so produced are differentiated by the indicator 14, the negative going " spikes being removed by diode 18 to produce a phase-modulated pulse train at 19. Feed-back is provided from point 19 to the input side of diode 4, so as to sharpen the output pulses. In a modification, Fig. 2 (not shown), the modulating signal and the control voltage are added and applied via a cathode follower to the biased diode circuit, the output being amplified, and a portion of the output is fed back as above.