baber/WOPTO huggingface dataset:
Patent GB-995406-A (GB)
Title: Stabilization of acrylic monomers
IPC: C08F2/38
Filed: 1964-05-06
Abstract: Acrylic monomers of the formula <FORM:0995406/C2/1> in which Y is a hydrogen atom or methyl radical, X is hydrogen, an alkyl group containing 1 to 4 carbon atoms, <FORM:0995406/C2/2> , <FORM:0995406/C2/3> , <FORM:0995406/C2/4> , <FORM:0995406/C2/5> , <FORM:0995406/C2/6> , <FORM:0995406/C2/7> , -R1-Z, -R1-OH, -R1-CN, -R1-SH, -R1-OH, -R1-SR, -R1-NHR, -R1-NRR, R1 being an alkylene group with 2 to 4 carbon atoms, Z is a halogen atom, R is an alkyl group with 1 to 4 carbon atoms, are stabilized by 5 to 5000 p.p.m. of at least one acyclic or alicyclic hydrocarbon containing 7 to 12 carbon atoms and having at least 3 conjugated double bonds.  The hydrocarbon may contain minor amounts of other hydrocarbons or other inert compounds.  The stabilizer is effective against "popcorn polymerization" during distillation.  Numerous examples of acrylic monomers and stabilizers are given.ALSO:Acrylic monomers of the formula <FORM:0995406/B1-B2/1> in which Y is a hydrogen atom or methyl radical, X is hydrogen, an alkyl group containing 1-4 carbon atoms, <FORM:0995406/B1-B2/2> , <FORM:0995406/B1-B2/3> , <FORM:0995406/B1-B2/4> , <FORM:0995406/B1-B2/5> , <FORM:0995406/B1-B2/6> , <FORM:0995406/B1-B2/7> , <FORM:0995406/B1-B2/8> , <FORM:0995406/B1-B2/9> , <FORM:0995406/B1-B2/100> , <FORM:0995406/B1-B2/111> , <FORM:0995406/B1-B2/122> , R1 being an alkylene group with 2-4 carbon atoms, Z is a halogen atom, R is an alkyl group with 1-4 carbon atoms, are stabilized during distillation by adding 5-5000 p.p.m. of at least one acyclic or alicyclic hydrocarbon containing 7-12 carbon atoms and having at least 3 conjugated double bonds.  The hydrocarbon may contain minor amounts of other hydrocarbons or inert compounds. Numerous examples of acrylic monomers and stabilizers are given.
Patent GB-867799-A (GB)
Title: Preparation of oxygenated compounds
IPC: C07C29/16
Filed: 1959-06-02
Abstract: Olefinic compounds having n carbon atoms in the molecule are converted to oxygenated compounds having 2n+2 carbon atoms by reaction with carbon monoxide and hydrogen at elevated temperatures and pressures in the presence of a cobalt-containing catalyst and an oil-soluble compound of cadmium or mercury, the oil-soluble compound being present in an amount of 0,01-0,04 moles per litre of olefin and the mole ratio of the cobalt catalyst to the oil-soluble compound being at least 2:1.  Suitable oil-soluble compounds are, for example, the cadmuim and mercury salts of oleic, stearic, naphthenic and linoleic acids; complexes of cadmium and mercury with diketones such as acetylacetone and their alcoholates with fatty alcohols.  The carboxylation step yields (from a olefine containing n carbon atoms) aldehydes containing n+1 and 2n+2 carbon atoms and these may be catalytically hydrogenated to give the corresponding alcohols.
Patent GB-690121-A (GB)
Title: Improvements in or relating to two-stroke internal combustion engines
IPC: F02B33/00
Filed: 1950-07-27
Abstract: 690,121. Two-stroke engines; valves and valvegear. WELSBERG, A. July 27, 1951 [July 27, 1950], No. 18800/50. Classes 7 (ii) and 7 (vi). The transfer passage and exhaust ports of a twostroke crankcase compression engine are controlled by a sleeve valve carried by the piston, and the transfer ports in the sleeve valve open into an annular space disposed immediately beneath the bottom edge of the cylindrical surface within which the piston and sleeve valve unit slides. The sleeve valve 34 slides within a cylinder liner 24 and co-operates with a space 23 formed between the liner 24 and a depending cylinder head 22 held in position by a removable finned cover 26, transfer ports 45 in the valve co-operating with an annular transfer passage 44 formed between the valve and cylinder barrel below the edge of the liner 24. The exhaust ports 46 leading to an annular exhaust passage. 47 may open into the space 23 and be controlled by the top edge of the valve 34 entering and leaving the space 23. or they may be positioned below the head 22 and controlled directly by the top edge of the sleeve 34. The exhaust ports preferably have flattened tops, and the transfer ports in aggregate extend up to half the circumference of the sleeve valve, the aggregate size of the exhaust ports being slightly larger. The crankcase 12 is integral with the cylinder barrel and has removable covers 13, 14, the combustible mixture intake port into the crankcase being controlled by a sector-shaped port in a valve disc 40 driven by the crank-pin 42 and formed with a boss 41 bearing in a sleeve 18.
Patent GB-971507-A (GB)
Title: Improvements in or relating to electrical measuring apparatus
IPC: G01N27/18
Filed: 1961-05-24
Abstract: 971, 507. Measuring electrically; bridge measurements. CHARBONNAGES DE FRANCE. May 24, 1961 [June 20, 1960], No. 18816/61. Headings G1N and G1U. An electrical circuit for use with apparatus of the kind in which the temperature of an electrical detector filament is a function of a parameter to be measured of a medium in contact with the filament includes a Wheatstone bridge and a current supply source G which supplies constant current to the bridge. Two arms of the bridge are formed by the detector filament 1 and a comparator filament 2 in series between the output terminals A, B of the current supply source, and the other two arms of the bridge include resistances 3, 4 sufficiently high to ensure that the current through the detector filament remains substantially constant, so that the temperature of the detector filament remains a direct function of the parameter to be measured. The parameter being measured may be for example the temperature of a chemical reaction) or the apparatus may be used for determining the amount of a particular gas in a mixture of two or more gases. The supply circuitry G may take the form wherein a resistor 9 in the emitter circuit of a transistor 7 and the zener voltage of a zener diode 11 together define the constant current. A battery may be used instead of the Zener diode circuit to provide a defining voltage (Fig. 2 not shown).
Patent GB-1473510-A (GB)
IPC: B23K9/10
Filed: 1974-04-30
Abstract: 1473510 Automatic control of arc welding C MAULE 30 April 1974 [3 May 1973] 18827/74 Heading G3R The voltage or current supplied by a static D.C. arc welder is regulated by a feedback circuit which controls a mains voltage converter producing a variable frequency squarewave which is fed to the arc terminals by way of an isolating transformer, a rectifier and an inductor. The squarewave frequency is controlled in accordance with measured output voltage or current. As shown, an arc 9 is supplied with mains voltage over a rectifier bridge 1, switching circuit 2 which may include transistors 11-13 or gated rectifiers, a transformer 4, rectifiers 6, an inductor 7 and a current-sensing resistor 8. The sensed current signal causes an amplifier 22 to block or saturate a transistor 23, thus determining the switching period of an astable multi-vibrator 26, the output of which is fed through a trigger circuit 37 and amplifier transistor 45 to the primary winding of a transformer 17 which has secondary windings connected in the base-emitter circuits of transistors 11-13. The operation of the feedback loop is such that the pulses fed to transformer 4 are of constant width but variable frequency. A diode 48 and Zener diode 49 protect transistors 11-13 and 45 from over-voltages. Zener diodes 19-21 protect, transistors 11-13 from negative over-voltages, and also discharge the energy stored in transformer 4 when the transistors are blocked.
Patent GB-1110266-A (GB)
Title: Substituted acrylates and polymers thereof
IPC: C08F20/36
Filed: 1966-04-29
Abstract: Polymers are prepared from a compound of the formula <FORM:1110266/C3/1> wherein R is hydrogen, methyl or ethyl and R1 is hydrogen, methyl, ethyl, hydroxymethyl or the radical <FORM:1110266/C3/2> the polymerization being preferably effected in bulk, in solution or in emulsion in the presence of a catalyst such as ammonium persulphate, 2,21 - azobis - (2 - methylpropionitrile, benzoyl peroxide or t.-butyl hydroperoxide.  An example describes the polymerization of the acrylic acid ester of 4-methyl-4-hydroxymethyl-2 -oxazolidone in aqueous medium using ammonium persulphate as catalyst to give a polymer suitable for use as an adhesive (in finely divided form); other acrylate, methacrylate and diacrylate esters prepared in the examples can be similarly polymerized.ALSO:Compounds of the formula <FORM:1110266/C2/1> wherein R is hydrogen, methyl or ethyl and R1 is hydrogen, methyl, ethyl, hydroxymethyl or the radical <FORM:1110266/C2/2> are prepared by condensing an oxazolidone of the formula <FORM:1110266/C2/3> wherein R2 is hydrogen, methyl, ethyl or hydroxymethy with an ethylenically unsaturated carboxy-containing compound of the formula <FORM:1110266/C2/4> wherein R3 is hydrogen or a C1- 4 alkyl radical. Examples describe the production of the acrylic acid esters of 4-methyl-4-hydroxymethyl -and 4-hydroxymethyl-2-oxazolidone, of the methacrylic acid esters of 4-methyl- and 4 - ethyl - 4 - hydroxymethyl - 2 - oxazolidone and of the acrylic acid diester of 4,4-bis(hydroxymethyl) -2-oxazolidone.
Patent GB-1362244-A (GB)
Title: Cap in combination with a container
IPC: B65D39/04
Filed: 1971-06-04
Abstract: 1362244 Tamper-proof closures MARDON ILLINGWORTH Ltd 24 May 1972 [4 June 1971] 18934/71 Heading B8T A tamper-proof cap 20 for an aerosol container 10 is made of resilient synthetic resin and comprises a flared lower edge 25 which engages under a bead 12 on the container 10 and a skirt 28 having a rib 24 which engages under the bead 12, the skirt being frangible over a circumferential portion to form a tear-strip. When the tear strip has been removed, the cap 20 resiliently engages the bead 12 to continue to protect the aersol valve (not shown). The skirt has a groove 26 (or may have circumferential perforations) or the groove may be adjacent the cap wall 22 or the rib 24. The bead 12 may be located at the edge 14 of the container 10.
Patent GB-268618-A (GB)
Title: Improvements in or relating to machines for dividing and working dough
IPC: A21C7/04
Filed: 1926-07-29
Abstract: 268,618. Mohr, W. July 29, 1926. Stream-cutting machines; extrusion machines; rolling.-The invention consists in a machine for performing all the operations of dividing and working dough without manual contact therewith. The dough is fed from a hopper 14 by positively driven conveyer belts 22 supported by boards 25 and is divided by rotary cutters 27 and reciprocating wire cutters 44 as it issues through the openings 29. The severed masses of dough are deposited on the board 58 and intermittently fed forward to the working mechanism 70 and thence to the fermentation chambers. All the mechanism of the machine is driven from the shaft 1. The conveyers, of which five are shown are operated by the worm driven shaft 6, Fig. 3, and variable-speed cone pulleys 7, 9 and gearing 11. The belts are provided with studs for positive engagement with the cylinders and may be lined with metal. The severing wire 44 is carried by two roller-guided pivoted arms 40 reciprocated by links 36 and cam-slotted discs 33' on a second worm-driven shaft 32. The intermittent movements are effected bv a mutilated gear 48 on the shaft 47 driven by chain from the shaft 32. The shaft 50 is intermittently driven by the gearing 49, 49<1>, 48 and actuates the boards 58 by chain-wheel and chain 56 passing over rollers 60. The dough working cups are raised and lowered by levers 64 engaging the spindles 68 and reciprocated by the cams 61 on the shaft 47. When in contact with the dough the cups are rotated by the spindles and eccentric gearing. Cross pins in the spindles when lowered engage driving slots in bosses of the skew gears 71 driven by skew gear on the shaft 75 and bevels 76, 77. When inoperative, the cups are retained always in the same position by springs 83 connected to the conveyer case 15. The conveyers and working cups and other parts contacting with the dough are made of heat-insulating material. The size of the pieces is controlled by varying the relative speeds of the cone pulleys.
Patent GB-862586-A (GB)
Title: Time-piece balance assembly
IPC: G04C3/06
Filed: 1957-06-18
Abstract: 862,586. Clocks and watches. FABRIQUES MOVADO: June 18, 1957 [June 22, 1956; June 8, 1957], No. 19143/57. Class 139 [Also in Group XXXV] A timepiece balance assembly is electromagnetically maintained in oscillation and is characterised in that the magnetic part which oscillates with the balance is magnetically screened. In the first example, Fig. 1, the magnet 11 on the balance staff is screened by arcuate extensions 12 of the soft iron armature 10. When the balance is in its mid position the poles of the magnet 11 are aligned with the gaps between the extensions 12. The coil 13 has two windings and is connected in a maintaining circuit having a transistor or a mechanical switch. The balance magnet 21 may be screened by a magnetic casing 23, Fig. 4, having gaps 26 in register with the poles of the armature 20. The coil armature may be a permanent magnet in which case the member carried by the balance staff is of soft iron, the material of one of such parts having no remanence. The member carried by the balance may be cross-shaped, Fig. 2, in which case four gaps are provided in the screen. The windings 14, 15 may each be split into two parts, the second part being located opposite the N-poles of the magnet 11.
Patent GB-1221108-A (GB)
Title: Radio range detection
Inventor: FRANCOIS JEAN-LOUIS HENRI
IPC: G02F2/02
Filed: 1968-04-23
Abstract: 1,221,108. Radar. CENTRE NATIONAL D'ETUDES SPATIALES. 23 April, 1968 [25 April, 1967], No. 19147/68. Heading H4D. Specification describes a CW phase comparison radar system wherein the carrier wave is amplitude modulated by a sub-carrier 5, Fig. 1, which in turn is phase modulated (SM), according to a pseudo-random code M. A coarse distance/phase comparison between the transmitted and reflected waves is carried out by means of an optical correlation between the code M as transmitted and as received, and a fine phase comparison is carried out between the transmitted and received subcarrier, after the latter has been phase demodulated according to the code M or delayed according to the coarse phase measurement. The optical correlation is carried out by the apparatus of Fig. 3, wherein the code M is recorded on a film 3 in the form of varying opacities and the modulation of the received subcarrier is used to intensity modulate a light source 1. A plurality of photodetectors 4 placed along the film thus receive light representing the products of the transmitted and received modulations with various delays therebetween. The outputs V(t) of the detectors are fed to integrating circuits, to provide the correlation output and the detector which provides the maximum correlation output indicated by its position along the film, the required coarse phase difference.
Patent GB-728899-A (GB)
Title: Improvements relating to suction nozzles
Inventor: JARDINE ALEXANDER
IPC: B65G53/42
Filed: 1951-08-14
Abstract: 728,899. Pneumatic conveyers. JESSOP & CO., Ltd. July 14, 1952 [Aug. 14, 1951 ; Feb. 25, 1952], Nos. 19156/51 and 4918/52. Class 78 (1). A conical suction nozzle 20 for admitting grain to a conduit 22, of the kind which rests on the grain and sinks automatically through it when suction is applied to the conduit, has stop pins 28 which arrest the downward movement before the mouth reaches the bottom of the container. The nozzle 20 may contain a smaller conical member 24 which has a limited vertical movement on the stop pins 28. These pins are fixed in bosses 27 on the nozzle 20 and pass freely through bosses 29 on the member 24. Each pin has a transverse slot 30 through which is passed a rivet 31 secured to the boss. The pins 28 project a short distance below the plane containing the bottom of the nozzle 20. A boss 33 receives the lower end of a guide rod 34, the upper end of which passes freely through a fixed guide. Specification 2702/04, [Class 78], is referred to.
Patent GB-320322-A (GB)
Title: Improved means for starting and stopping an electrically driven talking machine
IPC: G07F17/30
Filed: 1928-07-02
Abstract: 320,322. Sch÷nstein, G. July 2, 1928. Starting and stopping. - In apparatus for starting an electrically-driven talking machine from a distant coin box, the insertion of a coin closes contacts h, j, Fig. 4, and starts a motor K, the contacts being held closed by a catch on the armature p of an electromagnet l. After the record is played, the tone-arm closes the contacts 23<1>, 25 of a switch located on the talking machine thereby energizing the electromagnet l to open the circuit of the motor K and stop the machine. A coin inserted through a shoot a, Fig. 1, in the coin box F enters a tray b and tilts a lever c having an adjustable counterweight f and a carbon contact h which engages another carbon contact j on a pivoted arm i. A lug c<1> on the lever c is engaged by a catch p<1> on the armature p of the electromagnet l. A spring h<1> on the lever c engages a contact j<1> to close this contact which is in the circuit of the electromagnet l. The lever c also actuates means for closing the coin slit. The turntable 1, carrying a record 2, Fig. 5, is rotated by the motor K and, when the needle 41 of the sound-box 4 passes into the run-out groove, the tone-arm 3 engages an arm 6 of a switch E mounted on the machine to close the contacts 23<1>, 25, thereby releasing the lever c to stop the motor and completing the circuit of a signal lamp n, showing that the coin slit is still closed. The switch E comprises a pawl 9 on a shaft carrying the arm 6, the pawl engaging a shoulder 10<1>, Fig. 1, on a disc 10 loose on a shaft 11 and connected by a spring 18 to the pawl 9. When the pawl 9 is released by the tone-arm, the spring 18 causes a pin 27 on an arm 10" of the disc 10 to move the contact spring 25 against the contact 23<1>. The tone-arm 3 is now moved outwards beyond the record 2 and an arm 14 on it engages a tappet 13 to rotate a toothed segment 12 connected to the shaft 11 by a torsion spring 17. A shoulder 16 on the segment engages a pin 15 on the disc 10, so that the pin 27 opens the contacts 25, 23<1> and closes contacts 26, 24<1>, thereby breaking the circuit of the lamp n and closing the circuit of an electromagnet t which releases the coin-slit closing device. When the needle 4<1> is moved inwards a little and placed in the outer groove of a new record, the contacts 26, 24<1> are opened and the machine is in readiness for the insertion of another coin. The ratchet teeth on the segment 12 co-operate with a pawl 29 pivoted on the pawl 9 so that the pawl 9 is released if an attempt be made during playing to return the tone-arm outwards before it reaches the lever 6.
Patent GB-1101734-A (GB)
Title: Improvements in the preparation of petroleum resins
IPC: C08F240/00
Filed: 1965-05-06
Abstract: Petroleum resins are prepared by contacting a steam-cracked naphtha boiling in the range 50-450 DEG  F., from which all the C4 and lighter hydrocarbons have been removed, with a metal alkyl or metal hydride, and polymerizing the naphtha at -150 DEG  to 200 DEG  F. using a Friedel-Crafts catalyst.  The metal compound may be lithium aluminium hydride or ethyl aluminium dichloride which may also be used as the catalyst; the catalyst may also be AlCl3, BF3, SnCl4, TiCl4 or AlBr3.
Patent GB-617627-A (GB)
Title: Improvements in or relating to a strainer
IPC: A47J43/22
Filed: 1946-06-27
Abstract: 617,627. Strainers. EKCO PRODUCTS CO. June 27, 1946, No. 19221. Convention date, Dec. 5, 1945. [Class 46] The inner rim member 12 of a bowl-shaped wire mesh strainer is provided with an outer skirt 18 having an inner shoulder 20 co-operating with a shoulder 21 on a second rim member 14 which is sprung into position to hold the strainer element 10 in place. The lower faces 22 and 23 of the rim members are coplanar. The rim members are formed of a hardenable plastic material, and a handle is formed integrally with the inner one 12.
Patent GB-120931-A (GB)
Title: An Improved Crushing and Drying Machine.
Inventor: HOPPER JOHN GEORGES
IPC: H01M50/172
Filed: 1918-11-22
Abstract: 120,931. Hopper, J. G. July 25, 1917, [Convention date]. Strainer separators.-A machine for crushing and, if necessary, drying minerals and other materials comprises two rotary concave disks 1, 2 surrounded by a rapidly vibrating screen 9. The material passes from a hopper 5 through the hollow axle 6 of the disk 1 and, when crushed, is thrown against the screen, the separated water passing through the screen and the crushed material falling into a circular channel 10. The disks are formed with grooves or flutes and are driven in opposite directions or in the same direction but at different speeds by pulleys 3, 4. The upper disk can be adjusted by screws 8 or other means.
Patent GB-780828-A (GB)
Title: Improvements in or relating to electric glow discharge apparatus for measuring low gas-pressures
IPC: H01J41/06
Filed: 1955-07-04
Abstract: 780,828. Discharge apparatus. PHILIPS ELECTRICAL INDUSTRIES, Ltd. July 4, 1955 [July 7, 1955], No. 19261/55. Class 39(1). In a magnetron type ionization manometer the cathode consists of two circular plates 3 and 4 connected together outside the tube and the anode is a wide-mesh (2 x 2 mm.) cylindrical grid 5 which is surrounded by a conductive cylinder 6 of a diameter one and a half times to twice that of the anode. The current flowing to the cylinder 6 is a measure of the pressure. Curves are given showing the variation of current when a voltage of 2000v. is applied to the anode 5 and a voltage of 500v. or 1000v. is applied to the cylinder 6. By this one change of the voltage applied to the cylinder 6 pressures of argon or air can be measured over a range of from 2 x 10<SP>-4</SP> to 1 mm. For lower pressures the cylinder 6 may be connected to the anode 5 and a voltage of 2000v. applied to both, to provide apparatus functioning in the same way as a previously known arrangement.
Patent GB-205201-A (GB)
Title: Improvements in and relating to articles of utility made from compositions containing india-rubber and the like
IPC: B29C70/02
Filed: 1922-07-14
Abstract: 205,201. Gare, T. July 14, 1922. Utilizing waste rubber. - Vegetable fibres covered with soft vulcanized rubber are mixed with a small proportion of vulcanized rubber, pressed into a solid mass and heated with exclusion of air while maintaining the pressure. Worn tyre-covers, hose, &c. are disentegrated and, if necessary, additional rubber is added. The material is pressed in a mould, the mould is locked and heated for about 30 min. at 400‹ F. The mould is allowed to cool before removing the article. The invention is applied to the manufacture of floor coverings, wearing surfaces, footwear, roofing, tubing, wheels, paving materials &c. Tongued and grooved boards may be made by forcing from a heated press.