baber/WOPTO huggingface dataset:
Patent GB-656878-A (GB)
Title: Improvements in and relating to a mast structure
IPC: E21B15/00
Filed: 1947-10-09
Abstract: 656,878. Erecting portable derricks. MOORE CORPORATION, L. C. Oct. 9, 1947, No. 27134. Convention date, Oct. 9, 1946. [Class 78 (iv)] The mast structure 1 of an oilwell derrick is hinged at 4 by its front legs 3 to a base 2 and is raised by a sling connected to a gin pole 9, 11 on the base and to the travelling block 24 of the lifting tackle operated by a line 21 passing over a sheave 19 on the gin pole and over the crown block 23 from a winch 22. The sling comprises a doubled length of cable 29 passed over the lifting hook, around laterally spaced sheaves 30 on the mast, and either secured to a transverse tube 18 at the upper end of the gin pole 9, 11 or, for a tall mast, passed over laterally spaced pulleys 37 at the upper end of the gin pole to be connected at 39 to the rear legs 7 of the mast. As shown in Fig. 4, each pulley 37 is mounted on a pin 34 supported in bearing arms 31 joined by plates 32 and removably secured by bolts 33 to a bracket 26 rotatably secured to the transverse tube 18. For hoisting a small mast the pulleys 37 are removed and the sling connected directly to members 28 secured to the brackets 26. When the mast is erected the inclined braces 8 lie alongside the front legs 9 of the gin pole and the bottom ends of the rear legs 7 of the mast are directly above the top of the gin pole. In an alternative fixture for the sling 29 at the top of the gin pole, a pair of pulleys is permanently mounted on the crosstube 18 and the sling may be passed around the pulleys, or secured by a bracket directly to them. U.S.A. Specification 2,271,578 is referred to.
Patent GB-1065669-A (GB)
Title: Improved photographic radiation-sensitive silver halide materials
Inventor: WILLEMS JOZEF FRANS
IPC: G03C1/33
Filed: 1964-07-02
Abstract: 1,065,669. Silver-halide materials. GEVAERT-AGFA N. V. July 2, 1964, No. 27345/64. Heading G2C. Photographic silver halide materials contain in the support and/or in at least one waterpermeable layer lying at the same side of the support as the silver halide emulsion layer, preferably in the emulsion layer itself, at least one compound of the formula wherein A is a carboxyl, phosphonic acid or hydroxyl group and/or at least one water-soluble salt thereof, to prevent spots caused by heavy metals or compounds thereof.
Patent GB-791277-A (GB)
Title: Improvements in or relating to amplifiers and methods of detecting faults therein
Inventor: SCOWEN FRANK
IPC: H04B17/40
Filed: 1954-09-22
Abstract: 791,277. Unattended repeaters. POSTMASTER GENERAL. Nov. 1, 1955 [Sept. 22, 1954], No. 27439/54. Class 40 (4). In an arrangement for detecting incipient amplifier faults in an unattended repeater, means are provided for selecting from the output a narrow band of a noise or distortion signal generated by the amplifier, changing it in frequency, and feeding it back to the amplifier input for further amplification. A band-pass filter E, Fig. 1, selects the noise or distortion signal and corresponding frequencies are blocked from the amplifier input by a band-stop filter D. Frequency changing is effected in a modulator F by a locally generated oscillation and the desired sideband selected by a filter J after attenuation in network H is passed after further amplification to output terminal C. For testing selectively a number of repeaters a range of spaced modulating frequencies may be used or the selected noise bands may be suitably spaced. Examples are given. The modulating frequency or frequencies may be supplied over the cable and a repeater arrangement for such a system is described with reference to Fig. 2 (not shown).
Patent GB-338106-A (GB)
Title: Improvements in or relating to portable turning lathes
IPC: B23B3/02
Filed: 1929-10-18
Abstract: 338,106. Verschroyle, W. D. Oct. 18, 1929. Divided on 337,942. Portable turning- apparatus. - In a portable lathe of the kind described in Specification 216,917 the tailstock h is provided with an undercut slot c, open at the bottom to receive a flange d on the boss of a hand wheel f through which the poppet spindle k passes. The hand wheel is tapped to engage screw thread l on the spindle for feeding and adjustment, and the spindle is prevented from rotating by a screw m engaging a longitudinal groove n therein. The spindle may carry a back centre as shown or a chuck &c. for a drill or other tool. The headstock driving gear is described in Specification 337,942.
Patent GB-1173409-A (GB)
Title: Process for the Production of Isoprene
Inventor: FETTERLY LLOYD COCHRANE
IPC: C07C11/18
Filed: 1968-06-10
Abstract: 1,173,409. Isopentene derivatives. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 10 June, 1968 [12 June, 1967 (2)], No. 27484/68. Heading C2C. [Also in Division C5] In a process sequence for converting isopentane to isoprene (see Division C5), the first stage involves oxidation of the isopentane to tert.-amylhydroperoxide which is then used to epoxidize 2-methylbutene-2 whilst itself being reduced to tert.amylalcohol, e.g. using molybdic acid catalyst. In the presence of an oxyboron compound, e.g. triamyloxyboroxine or boron oxide, these two steps take place simultaneously, amyl borate esters being amongst the products. The 2-methylbutene-2 oxide produced may be isomerized to the allylic alcohol form, e.g. in the presence of trilithium phosphate.
Patent GB-651188-A (GB)
Title: Improvements in and relating to shaft couplings
IPC: F16D1/033
Filed: 1949-10-26
Abstract: 651,188. Shaft couplings. AKT.-GES. FUR TECHNISCHE STUDIEN. Oct. 26, 1949, No. 27489. Convention date, Nov. 5, 1948. [Class 80(ii)] In a shaft coupling comprising flanges 3, 5 secured on the shaft ends 1, 2, with connecting bolts 15, two solid discs 7, 8 are interposed between the flange faces, the discs having annular shoulders 9, 10 embracing the flanges so as to strengthen the latter. Rotation of the bolts 15 is prevented by pins 20, and the castellated nuts 22 have cylindrical portions 23 closely fitting within the holes in the flange 3, so as to resist centrifugal stresses in the bolts. Where the two shafts are capable of sufficient relative axial movement, the two discs 7, 8 may be replaced by a single disc, shouldered on each side.
Patent GB-459679-A (GB)
Title: Improvements in and relating to apparatus for manufacturing and bottling aerated liquids
IPC: B67C3/06
Filed: 1935-10-05
Abstract: 459,679. Combined liquid and gas pumps. COWEY, L. E., Archer Works, Kew Gardens, Surrey. Oct. 5, 1935, No. 27560. [Class 102 (i)] [See also Groups VI and XVII] In a combined aerating and bottling machine of the kind in which liquid to be aerated is supplied by a pump 13 to an aerator which supplies the aerated liquid under pressure to the bottling mechanism, the excess gas and liquid vented through the snifting valves of the bottling mechanism are returned by the pump to the aerator. The pump 13 is connected at its lower end to a pipe for supply of liquid and a pipe discharging to the aerator. At its upper end it is provided with an inlet 13b provided with an adjustable non-return valve 16 and connected to a counter-pressure chamber, into which snifted gas and liquid are discharged, and with an outlet 14<a> provided with a non-return valve 17 and connected to the aerator. Each down stroke of the pump piston 10 discharges fresh liquid below the piston 10 and draws in snifted gas and liquid by the inlet 13<b>. The up stroke discharges gas and liquid by the outlet 14<a> to the aerator, and draws in fresh liquid below the piston 10. The inner end of the piston rod is formed with a passage 8<a>, 8<c> provided with a valve 8<d>, so that any gas leaking past the piston is returned to the space above the piston during its down stroke.
Patent GB-390079-A (GB)
Title: The manufacture of new water-insoluble azo-dystuffs
IPC: H01M12/06
Filed: 1932-10-04
Abstract: Azo dyes are made in substance, on a substratum or on the fibre by coupling a diazotized aromatic or heterocyclic amine, which does not contain a substituent which causes solubility in water, with an arylide of 6 : 7-benzindole-4<1>-hydroxy-5<1>-carboxylic acid or of 6 : 7-benzindole-5<1>-hydroxy-4<1>-carboxylic acid containing in 2-position a hydrocarbon radicle and in 3-position hydrogen or a hydrocarbon radicle, or in which the 2- and 3-positions may be linked together to a nucleus by a tetramethylene chain.  Violet to bluish-black shades are obtained.  In examples, the following dyestuffs are produced on cotton: 1-amino-2-methoxy-4-nitrobenzene or 2-aminocarbazole --> 2-phenyl-6 : 7 - benzindole-4<1>-hydroxy-5<1>-carboxylic acid-p-anisidide, 1-amino-2-methoxy-4-nitrobenzene --> p-anisidide of 2-methyl- or 2 : 3-dimethyl-6 : 7-benzindole-4<1>-hydroxy-5<1>-carboxylic acid or the a -naphthylamide of 2-methyl - 6 : 7 - benzindole - 4<1> - hydroxy - 5<1> - carboxylic acid or the p-chloranilide of the hydroxy-benzo-tetrahydrocarbazole carboxylic acid of the formula: <FORM:0390079/IV/1> 1 - amino - 2 - methyl - 5 - chlorobenzene --> the p-anisidide of the above hydroxybenzo-tetrahydrocarbazole carboxylic acid, and 1-amino-2-methoxy-4-nitrobenzene --> 2-phenyl-6 : 7-benzindole - 4<1> - hydroxy - 5<1> - carboxylic acid-o-methyl-p-anisidide.  Arylides of benzindole-hydroxy-o-carboxylic acids are made from the corresponding benzindole-hydroxy-o-carboxylic acids (cf. Specification 385,627) and the corresponding amines by condensing in an inert solvent, e.g. chlorobenzene, with phosphorus oxychloride.
Patent GB-1153656-A (GB)
Title: Improved Phenol-Formaldehyde Resin Composition
Inventor: GARRETT WALTER LLOYD
IPC: C08F236/04
Filed: 1967-06-15
Abstract: 1,153,656. Diene/amide copolymers; resole compositions. DOW CHEMICAL CO. 15 June, 1967, No. 27624/67. Headings C3C, C3P and C3R. A mixture of monomers comprising 50-95 weight per cent of butadiene, isoprene, or 2,3-dimethyl-butadiene and 50-5 weight per cent of an acrylamide monomer of formula where R is H or methyl, and R<SP>1</SP> is H or C 1 -C 4  alkyl, is polymerized in a diol medium which is (a) a C 2 -C 6  alkylene diol, or (b) a liquid polyalkyleneoxydiol having a molecular weight of less than 650 and the formula wherein a is 2 or 3 and n is the number of alkyleneoxy units. The preferred initiator is potassium persulphate and the preferred copolymers are of butadiene with acrylamide and methacrylamide. Resole compositions.-Dispersions of the above copolymers in the diol polymerization medium and optionally containing unreacted acrylamide monomer are added in an amount of 0À5 to 10 weight per cent to a liquid thermosetting phenol-formaldehyde resole composition. Cellular &c. compositions.-These resole compositions can be foamed by mixing with volatile blowing agents such as 1,1,2-trichloro- 1,2,2- trifluoroethane and curing at moderately elevated temperatures.
Patent GB-984021-A (GB)
Title: Improvements in or relating to the synthesis of steroids
IPC: C07J9/00
Filed: 1962-07-18
Abstract: The invention comprises compounds having the formulae <FORM:0984021/C2/1> wherein R is a hydrogen atom or an alkanoyl group, R1 is an oxygen atom or an alkylenedioxy group having 2 or 3 carbon atoms and the ripple mark (#x) represents the a - or b -configuration. These compounds may be obtained according to the following reaction scheme in which they are designated by the formulae III, IV and VI <FORM:0984021/C2/2> Step I is effected by enolation, halogenation and dehalogenation, step 2 by enolation and hydrolysis, step 3 with a cyanating agent, e.g. alkali metal cyanide, step 4 by reduction, hydrolysis and reduction, step 5 with methyl magnesium halide followed by hydrolysis, step 6 by dehydration, e.g. by treatment with phosphorus oxychloride, step 7 by treatment with oxidizing agents, e.g. osmium tetroxide, and step 8 by heating with a basic substance, e.g. diethylamine.  The starting 3-hydroxy - D - homo - 18 - nor - androst - 13 (17a)-en-17-one may be obtained by refluxing 6 - methoxy - 2 - tetraolone with b  - diethylaminoethyl ethyl ketone, reacting the resultant mixture containing a tautomer of 1-methyl-7-methoxy - 1,2,3,3,9,10 - hexahydrophenanthren- 2 - one with b  - diethylaminoethyl methyl ketone at 0-5 DEG  C. followed by refluxing, and subjecting the thus obtained 2-methoxy-10a-methyl - 5,6,8,9,10,10a,11,12 - octahydrochrysen-8-one to reduction by conventional procedures. Specifications 984,022, 984,023 and 984,024 are referred to.
Patent GB-1512813-A (GB)
Title: Transmitter with amplitude-grid modulation
IPC: H03C1/62
Filed: 1975-07-01
Abstract: 1512813 Amplitude modulating TSENTRALNA RASVOYNA LABORATORIA 1 July 1975 27764/75 Heading H3R A transmitter comprises a source of radio frequency signals feeding a pre-power stage V the output of which is coupled to a grid-modulated final power stage V2, a further stage, such as transistor T3, for controlling the output of the prepower stage V1, as a function of the average value of the modulation as rectified at D. The modulating signal is preferably coupled from a transistor amplifier via winding L1 of transformer T to the grid of the final power stage V2 and to the rectifier D via a further winding L2 to the base of transistor T3 in the cathode circuit of the pre-power stage V 1. Fig. 3 (not shown) depicts a graph of the efficiency against depth of modulation, the efficiency being in the range 58-68% over the whole of the modulation range.
Patent GB-1184060-A (GB)
Title: Improvements in or relating to Storage Arrangements
Inventor: SINDEN KENNETH HARRY
IPC: G06F13/00
Filed: 1966-06-22
Abstract: 1,184,060. Magnetic storage arrangements; semi-conductor circuits. ELECTRIC & MUSICAL INDUSTRIES Ltd. 22 June, 1967 [22 June, 1966], No. 27814/66. Headings H3B and H3T. A storage arrangement comprises two similar thin magnetic film matrix stores 1, 5, Fig. 1, each having digit conductors 2, 6<SP>1</SP>, address conductors 3, 7 and sense conductors 4, 8 of which at least the digit and sense conductors are balanced transmission lines, the digit conductors of the two stores being driven in parallel by digit driver circuits 9, and the sense conductors of a corresponding: row in each of the stores being connected to a respective differential read amplifier 12-15. The arrangement enables spurious signals produced in the sense conductors due to driving of the digit conductors to be mutually self cancelling, the arrangement being in addition to the provision of crossed - over sense conductors in parts of each store or the use of capacitive, indtictive or resistive trimmers. Each store has separate address drive circuits 10, 11 and operates as a half of a larger store. Differential amplifiers. The transistor arrangement 12 shown in Fig. 1 may be used to provide an output at terminals 16. Alternatively, the gain stabilized transistor arrangement shown in Fig. 2 may be connected to the sense conductors 4, 8<SP>1</SP>. This amplifier comprises an input stage 38, 59, and a second stage 45, 50 with negative feedback through resistors 49, 52. The signal is then passed through amplifiers 55, 56 to a differential output stage 59, 60 provided with clamping diodes 68, 73 in the output circuit 69, 74.
Patent GB-175330-A (GB)
Title: Improved process of obtaining cellulose from vegetable matter
IPC: D21C3/02
Filed: 1920-10-01
Abstract: 175,330. Bustamante, G. J. Oct. 1, 1920. Pulp, preparation of.-In preparing cellulose from the leaves and stems of lichens, trees, and plants of various kinds, the dried material is immersed in cold water and separated by de-fiberizing-apparatus into coarse fibres which are placed on a layer of anhydrous lime to which is added non-caustic lye (Na2 CO3). Ammonia is added and finally hydrochloric acid and sulphuric acid. After washing the material is pressed and then comminuted. The operation may be repeated any number of times and a bleaching-agent may be added immediately before the ammonia.
Patent GB-1077384-A (GB)
Title: A method of handling and fabricating a neutron responsive fuel
IPC: G21C19/00
Filed: 1965-07-01
Abstract: 1,077,384. Fuel elements. ATOMIC ENERGY OF CANADA. July 1, 1965 [Sept. 9, 1964], No. 27953/65. Heading G6C. The handling of a fissile fuel for a nuclear reactor is facilitated if a material of -high neutron capture cross-section, e.g. gadolinium, camarium or cadmium, is dispersed in the fuel to reduce the neutron responsive reactivity of the fuel, thereafter fabricating the fuel as required for -the nuclear reactor. The fuel fabricated in this manner has very low neutron responsive reactivity until the poison has been destroyed by subjecting the fuel to heavy neutron bombardment, such as by placing it in the operating reactor for a period of a day or more. In some cases it might be practical to make provision for reactivating poisoned fuel on site, and then the denatured fuel could be used as the initial charge of the reactor. Because the criticality hazards are small, the fabricating, shipping and storing of fuel denatured in this manner are considerably simplified. In an example, the fuel forms an annulus between an outer and an inner coolant flow tube, the fuel being sheathed with aluminium and formed of a uranium-aluminium alloy in which the poison has been dispersed by solid solution in the alloy. The quantity of the poison is chosen and distributed in the fuel so that under the netron bombardment the reactivity of the fuel is restored in a period short compared with the life of the fuel in the reactor.
Patent GB-896480-A (GB)
Title: Cartons
Inventor: VESAK JOSEPH
IPC: B65D71/68
Filed: 1960-08-12
Abstract: 896,480. Cellular cartons. UNIPAK CARTONS Ltd. Aug. 12, 1960, No. 28083/60. Class 18. A partitioned carrier carton has an interior structure substantially as described in Specification 896,479. It may also have the same handle arrangement or alternatively may have cut away sides and a handhole 65. Specifications 832,308 and 858,214 also are referred to.
Patent GB-1275382-A (GB)
Title: Apparatus for, and method of producing freeze dried substances
Inventor: RADER EARL LESLIE
IPC: A23L2/14
Filed: 1970-02-13
Abstract: 1275382 Freeze drying E L RADER 13 Feb 1970 [24 Feb 1969] 28085/71 Divided out of 1275381 Heading F4G The subject-matter of this Specification is identical with that described in Specifications 1,275,381 and 1,275,383, but the claims are concerned with the moisture condensing and removal means.
Patent GB-154433-A (GB)
Title: An improved portable stove or furnace for plumbers and like uses
IPC: B23K3/02
Filed: 1919-11-14
Abstract: 154,433. Wilkes, A. H. Nov. 14, 1919. Iron-heating stoves; melting-stoves.-A portable stove for heating soldering-irons, melting solder &c., and like purposes comprises a casing a having openings for a blow-lamp nozzle and for the iron &c. to be heated, there being a stiffening member f secured to the lower part of the casing which provides a rest for the iron and carries a supporting member m for the handle k of the iron. The supporting-member m shown is formed of wire and has parallel legs allowing it to be slid in and out of the casing. A baffle-plate p is attached to the casing in front of the blowlamp nozzle. Solder &c. may be melted in a vessel c at the top of the stove. Specification 112,915 is referred to.
Patent GB-228976-A (GB)
Title: Liquid cooler
IPC: F28D1/02
Filed: 1923-11-10
Abstract: 228,976. Rees, J. W. Nov. 10, 1923. Cooling liquids indirectly within casings or chambers.-Apparatus particularly adapted for cooling lubricating oil of engines comprises a stepped conical vessel 8 arranged within a casing 13 through which water or other cooling-medium is circulated, the oil or other liquid to be cooled being supplied through a pipe 1 and distributed as a film over the inner surface of the vessel 8 by radial pipes 4 delivering into an annular pocket 5 communicating with the vessel 8 by numerous holes 7. The oil is subsequently discharged through a pipe 2 detachably connected to a pipe 19 serving to secure the vessel 8 to the base of the casing 13. The vessel 8 has a bolted-on flanged cover 10 and is resiliently spaced from the wall of the casing by longitudinal spring strips on its exterior surface. The cooling-medium is supplied through a pipe 14 and discharged through a pipe 15, a drain cock 16 being fitted. The apparatus may be mounted on legs 20.
Patent GB-813198-A (GB)
Title: Improvements in polymerization of isoprene
IPC: C08F136/08
Filed: 1956-09-19
Abstract: Isoprene is polymerized in the presence of a hydrocarbon lithium or polylithium to give a rubbery essentially cis 1,4-polyisoprene. Specified catalysts are methyl-, ethyl-, butyl-, amyl-, hexyl-, 2-ethyl hexyl-, n-dodecyl- and n-hexadecyl-lithium; allyl- and methallyl-lithium; phenyl-, tolyl- and xylyl-lithium; alpha- and beta-naphthyl lithium; methylene-, ethylene-, trimethylene-, pentamethylene-, hexamethylene-, decamethylene-, octadecamethylene-dilithium; 1,2-dilithium propane; 1,4-dilithium benzene, 1,5-dilithium naphthalene, and 1,2-dilithium-1,3-diphenyl propane; 1,3,5-trilithium pentane, 1,3,5-trilithium benzene and the compound of the formula <FORM:0813198/IV (a)/1> Mixtures of such compounds may be used and the mixture obtained by treating 1 mol. of an alkyl lithium with 2/3 mol. of an alcohol and thereafter with an olefine for a period of two hours, e.g. treating amyl lithium with isopropanol and propylene.  The polymerization is preferably carried out in bulk, solvents particularly hydrocarbons such as pentane, hexane, heptane, petroleum ether, benzene or cyclopentane may be used.  The monomer should be at least 90 mol. per cent pure and may be submitted to a final purification by passing through silica gel into the reaction vessel.  Oxygen and water should be excluded and final traces of air are removed by venting a portion of the monomer before sealing the reaction vessel; inert gases may be used during and before charging.  The amount of catalyst may be 0.005-0.5 gram of carbon-linked lithium per 100 grams of isoprene.  Temperatures of 0 DEG  to 100 DEG  C. for small-scale and 150 DEG  C. for large-scale operations may be used for reaction times of 3 to 60 hours. Polymerization may be stopped by adding an alcohol.  The polymer should be washed to remove catalyst and an antioxidant added. Numerous examples are given.