baber/WOPTO huggingface dataset:
Patent GB-1166510-A (GB)
Title: Derivatives of Dihydromorphine
Inventor: BOWER JOHN DELL
IPC: C07D489/12
Filed: 1967-06-20
Abstract: 1,166,510. Normorphine and norcodeine derivatives. RECKITT & SONS Ltd. 12 June, 1968 [20 June, 1967], No. 28285/67. Heading C2C. The invention comprises compounds of the formula I and their pharmaceutically acceptable acid addition salts, wherein Y represents a -CH = CH- or -CH 2 CH 2 - group ;R represents a hydrogen atom or a methyl group; R 1  represents a C n H 2n  + group wherein n represents 1 to 8, R 2  represents a C 1-8  alkyl, C 2-8  alkenyl, C 2-8  alkynyl or a C 4-7  alicyclic-substituted methyl group and their preparation, where R represents a hydrogen atom, by treating a northebaine of the Formula II with HBr and re-esterfying the resultant normorphine-7- carboxylic acid with an alcohol of the formula R<SP>1</SP>OH and where R represents a methyl group by reacting a compound of the Formula II with HC1 and re-esterifying the resulting norcodeine-7-carboxylic acid with an alcohol of the formula R<SP>1</SP>OH. Therapeutic compositions; with analgesic; sedative and antitussive properties and depressant action on the peripheral autonomic nerve function; for oral administration, comprise compounds of the invention with a carrier.
Patent GB-806327-A (GB)
Title: High fidelity loudspeaker enclosure
IPC: H04R1/28
Filed: 1956-09-17
Abstract: 806,327. Loud-speakers. BRADFORD, R. L. Sept. 17, 1956, No. 28309/56. Class 13. [Also in Group XXXIX] A closed cabinet for a loudspeaker has a pressure-equalizing part 24 closed by a light vane 25 which yields to differences of pressure between the inside and outside of the cabinet.
Patent GB-936054-A (GB)
Title: Improvements in or relating to freeze-drying
Inventor: MASON PETER BARRY
IPC: F26B5/06
Filed: 1961-08-03
Abstract: 936,054. Freeze drying. MITCHELL ENGINEERING Ltd. Aug. 2, 1962 [Aug. 3, 1961], No. 28309/61. Class 34 (2). In a method of freeze drying a liquid or solid material, the material is frozen in trays, grids, or the like, and during the sublimation treatment the trays &c. are supported in a vertical position so that the dried material falls away from the surface of the undried material. Trays or grids 15 containing a liquid or solid material, which may be either frozen before entry to or frozen whilst in a horizontal position in an evacuable chamber 10, are mounted back to back in pairs in a vertical position between vertically-disposed radiant heaters 17 to sublimate the frozen liquid content of the material. The trays or grids are supported from sliding or roller carriages 16 which engage on upper trough-like rails 12b and the bottoms of the trays run in upwardly open guideways 14. Scrapers or vibrators (not shown) may be provided to assist the dried material to fall from the surface of the frozen material into either a lower catch tray 18 or to a conveyer belt (not shown) in the base of the chamber to deliver it to a vacuum lock hopper. Specification 816,794 is referred to.
Patent GB-1015431-A (GB)
Title: Improvements in or relating to optical maser apparatus
IPC: H01S3/0915
Filed: 1962-07-24
Abstract: 1,015,431. Discharge apparatus. LITTON INDUSTRIES Inc. July 24, 1962 [July 31, 1961; Jan. 8, 1962], No. 28382/62. Heading H1D. [Also in Division H3] The optical output from a phosphor layer in a vacuum or low pressure gas discharge tube is used to excite a laser (see Division H3). The phosphor may be suspended in, or form a slurry with, coolant flowing over the laser material. The Specification describes the vacuum tube arrangements, and the combination of a vacuum tube and a gas discharge tube, described in Specification 1,015,433, and also discloses a further discharge tube arrangement, Fig. 7. Phosphor layer 148 is arranged between tubes 142 and 152 surrounding laser rod 132. Tubes 152 and 160 form the walls of a discharge tube 154 having copper electrodes 156, 158. Crossed magnetic and electric fields are provided by a coil 164 and a light reflective and electrode layer 162, to increase the ion path length. Surrounding phosphor layer 148 is a filter layer 150 which transmits the ultra-violet output of tube 154 but reflects the output from the phosphor. The gas pressure is low so that sharp spectral lines are produced, a suitable gas being mercury vapour. A coolant fluid is passed through tubes 262, 264 and may be coloured to act as a filter in addition to, or instead of, layer 150.
Patent GB-1064813-A (GB)
Title: Improvements in or relating to counting and selecting devices
Inventor: RYDER ANTHONY DAVID
IPC: H03K23/74
Filed: 1963-07-18
Abstract: 1,064,813. Counters. WM. WADSWORTH & SONS Ltd. July 20, 1964 [July 18, 1963], No. 28408/63. Heading G4D.  A unit, which may be used in cumulative, ring or cascade counters, comprises a relay which may be set by a pulse in one sense and reset by a pulse in the opposite sense, the relay being connectible in circuit with a condenser which may be charged or discharged by an independent circuit.  Closure of contact 17 charges condenser 120, Fig. 1, subsequent closure of contact 13 dis. charging the condenser through relay 100. Resistance valves are such that operation of the contacts in reverse order has no effect. The contact 17 thus primes relay 100 to operate at the next closure of contact 13, and the unit may be used in the manner of an electronic counter stage. The relay may have two or more windings or may rely on high remanence. Fig. 3 shows a three-stage reversible ring counter. Each stage has two setting and one resetting winding, such as 101, 103 and 102. A forward impulse at contact 13 energizes the resetting winding, say 102, of the previously operated stage and one of the setting windings, say 201, of the following stage. A reverse counting impulse likewise energizes resetting winding 102 but this time energizes the alternative setting winding 303 of the preceding stage. The counter may be reset to initial condition by an additional resetting winding 104 by closing contact 19. Fig. 4 shows a cumulative type of counter in which the number of stages set increases or decreases according to whether contact 13 or 14 operates. Closing contact 19 resets all stages. In a modification. Fig. 5, successive stages have condensers and windings which operate at successively higher voltages. The basic circuit is modified in Fig. 6 which also shows a cumulative type of counter. For forward counting a condenser such as 221 charges over closed contact 111, subsequent closing of contact 13 discharging it through winding 201. For reverse counting the condensers are primed by discharging and then charged through the winding to provide the impulse. The invention may be applied to the counting of cars entering or leaving car-parks or to the position of a lift. The operating contacts may be replaced by photo-electric cells. Carry to higher denominations is provided.
Patent GB-853033-A (GB)
Title: Improvements in power feeding arrangements for telecommunication systems
Inventor: HELLIWELL BRIAN STANLEY
IPC: H04B3/44
Filed: 1957-09-09
Abstract: 853,033. Feeding unattended repeaters. BRITISH TELECOMMUNICATIONS RESEARCH Ltd. Aug. 27, 1958 [Sept. 9, 1957], No. 28419/57. Drawings to Specification. Class 40 (4). Alternating current is rectified at a number of points along a line of unattended repeaters, each point of rectification supplying direct current to a group of repeaters. The repeaters use transistor amplifiers and are fed with D.C. over the signal channel in groups of 6 or 8. Rectification takes place under the control of switching equipment which, in the event of trouble, may transfer feed from one terminal station to the other. The A.C. may be fed over a line separate from the signal line, or be fed over the signal line, and may be stepped down in voltage before rectification. The D.C. fed to the repeaters is preferably of constant current.
Patent GB-467333-A (GB)
Title: Improvements in or relating to machines for making cigarettes
IPC: A24C5/47
Filed: 1935-11-15
Abstract: 467,333. Cigarette-making machines. LUBBOCK, I. Nov. 15, 1935, No. 28437. [Class 130] In 'the manufacture of cigarettes having a filter tip or other mouthpiece stub united. thereto by an encircling band or wrapper applied by rolling the assembled and aligned cigarettes and stubs by contact between relatively movable members one of which acts as a conveyer, so that during the rolling operation the rotating assemblage moves continuously in a lateral-direction, the assemblage is positively located in alignment during the rolling operation. In the form shown, cigarettes 1 are fed in pairs from duplicate hoppers 2 on to a conveyer 3 and double-length stubs are fed from an intermediate hopper between the pairs of cigarettes, which are held in alignment by side guides. The conveyer 3 is provided with groups of rollers 4, 4a, 4b by which the assembled cigarettes and stubs are positively located in alignment while being freely rotatable. The uniting bands 6 are applied to the assemblages by a rotary drum 5, which is preferably driven so as to feed the bands 6 at a greater speed than that of the assemblage, which is thus rotated. The drum may, however, be driven at a slower peripheral speed than the conveyer 3 or in the opposite direction. To maintain the spacing of the rollers 4 and the drum 5 during rolling, the rollers 4 are carried by radial members 4c carrying rollers 4d travelling on a stationary cam rack 7. The cork, paper, &c. for the uniting bands 6 is fed from a spool 8 through a guide 9 to a cam-actuated cutter 11 and a feed roller 13, and is held to the drum 5 by suction while carried past a pasting roller 14. In a modification, the conveyer consists of a chain and the roller assemblies are carried by substantially triangular end plates pivoted on the link pins of the chain ; these plates also carry rollers running in stationary cam tracks corresponding to the track 7. In a further modification, one or more drums are carried in an orbital.path by a larger drum or other conveyer so that the uniting band is pressed against the assembled cigarettes and stub during a certain amount of travel in the orbital path. The drums are rotated by the engagement of a gear wheel on the drum with a fixed gear segment or rack, so that a spring within the drum is wound up and then released to effect a rapid rotation of the drum to effect the wrapping operation. In further modifications, (1) the uniting bands are brought into contact with the assemblages by means independent of the drum ; (2) the drum is replaced by an endless chain, band, or other conveyer ; (3) the rotation of the assemblage is effected by driving one or more of the positioning rollers, or takes place between the drum and a roller carried by the conveyer ; (4) the aligned cigarettes and stubs are located in slots or by fixed members instead of the rollers 4a, 4b; (5) the conveyer or the apparatus as a whole is arranged at such an angle that the assembled lengths on the conveyer abut one another under gravity.
Patent GB-718761-A (GB)
Title: Improvements in or relating to the manufacture of magnetrons
Inventor: BROWN WILLIAM CYRUS
IPC: H01J25/587
Filed: 1952-11-11
Abstract: 718,761. Magnetrons. RAYTHEON MANUFACTURING CO. Nov. 11, 1952, No. 28450/52. Class 39(1) In a method of assembling a tunable multicavity magnetron in which tuning elements 14 are movable into and out of cavities defined by anode vanes 5, the tuning assembly is used as a jig for mounting, the anode vanes in position. The tuning assembly comprising a plunger 9, a pole-piece 7 in which the plunger slides, a flexible diaphragm 10 and the tuning elements 14, is first mounted on the end of the envelope 4. The anode vanes 5 are then located between the tuning elements and positioned by removable spacers 17 of stainless steel. The spacers 17 are arranged as shown to allow for the positioning of the anode straps 20, 21 in slots in the lower ends of the vanes 5. The assembly is then heated to solder or to braze the anode vanes 5 to the envelope 4, the straps 20, 21 to the anode vanes, and also the magnetron end plate 8 to the envelope. The spacers 17 are then removed.
Patent GB-648663-A (GB)
Title: Improvements in impulse senders of the type used in telephone systems
IPC: H04M1/23
Filed: 1948-11-03
Abstract: 648,663. Impulse transmitters. GENERAL ELECTRIC CO., Ltd., and PENDLETON, A. Nov. 3, 1948, No. 28503. [Class 40 (iv)] A dial transmitter has a cast frame 1 sup - porting the bearings of the dial, the brake cup 16 of the governor 21 being accurately located by a hole in a surface 20 formed on the frame 1. A bearing for the governor spur wheel 4 is provided by a plate 8 which fits over a boss 9 carrying the main dial spindle 2 and is fixed to the frame 1 by screws 6, 7 whose heads are grooved to engage a retaining spring 11 which presses a synthetic resin ring 12 against the number plate 13 which in turn rests on a rubber ring 15. A washer which fits closely on the main spindle 2 is held between the ring 12 and the number plate 13.
Patent GB-230518-A (GB)
Title: Improvements relating to the extraction of coke from vertical carbonising retorts
IPC: C10B33/02
Filed: 1923-11-12
Abstract: 230,518. Woodall-Duckham (1920), Ltd., (formerly Woodall, Duckham, & Jones (1920), Ltd.), and Duckham, Sir A. M. Nov. 12, 1923. Discharging.-The issue of coke from the lower end of a vertical retort is governed by the descent of a container or casing c<1> the bottom of which forms the bottom of the retort. When the container has descended to the full extent of its movement the charge in the body of the retort is temporarily supported by the insertion of forks 6, mounted on an extension a, and the container is then removed, emptied and replaced, or another similar container is substituted. The container, which is preferably double-walled to provide a water seal with a depending casing b, is suspended by chains from winding-drums d, counter-balanced by a weight suspended from drums e on the same shafts. The drums are rotated to lower the container by worms h on a shaft i driven by a continuously-oscillated pawl l engaging a wheel m, which can be made fast to the shaft by a clutch n. When the edge of the container approaches the bottom edge of the. retort extension a bracket r strikes a lever q<1> having a pivoted end portion, and the clutch is disengaged. The forks are now inserted by operation of levers 8 from the hand-wheel 10, and the lowering is completed by rotating the shaft i by means of the chain w. On the upward movement of the container the clutch is re-engaged when the bracket r contacts with the lever q.
Patent GB-791969-A (GB)
Title: Glass and articles comprising the same
IPC: C03B23/24
Filed: 1955-10-07
Abstract: 791,969. Glass. PITTSBURG PLATE GLASS CO. Oct. 7, 1955 [Oct. 14, 1954], No. 28625/55. Drawings to Specification. Class 56. A lead borosilicate glass for adhering to a nickel-iron alloy containing approximately equal parts by weight of iron and nickel, or to a metal oxide coating on said alloy, and for sealing to a lime-soda-silica glass comprises 67 to 75 per cent by weight PbO, 12-16 B 2 O 3 , 10-15 SiO 2  and about 4 per cent by weight Al 2 O 3 . The invention also includes the composite article for sealing to a lime-soda-silica glass and comprising a nickel-iron alloy containing approximately equal parts by weight of iron and nickel adhered to a lead borosilicate glass comprising 67-75 per cent by weight PbO, 12-16 Bz O 3 , 10-15 SiO 2  and 0-5 Al 2 O 3 . The invention is described with special reference to spacer elements and pore-sealing eyelets in multiple glazing units. Specification 734,922 is referred to.
Patent GB-407276-A (GB)
Title: Method of protecting lead
IPC: C23F15/00
Filed: 1933-10-16
Abstract: A lead pipe or cable which is smeared with grease, e.g petroleum jelly, to facilitate laying is protected against corrosion by adding sulphur &c. to the grease so that a stable lead salt film is formed on the surface thereof.  Rosin may also be added to the grease.  A preliminary film of lead sulphide may be applied to the pipe, preferably immediately after manufacture, by passing it through an aqueous solution of sodium or potassium sulphide.
Patent GB-298205-A (GB)
Title: Multiple thermionic valve
IPC: H01J21/20
Filed: 1927-07-19
Abstract: 298,205. Loewe, S. July 19, 1926, [Convention date]. Divided on 274,514. Vacuum tubes.-In a multiple thermionic valve containing coupling elements the lead 18 of one of the anodes 8 preceding the last stage is taken outwards and the corresponding anode resistance is omitted; this arrangement enables a tuned circuit or a back-coupled circuit to be connected in the circuit of the anode 8 so as to improve selectivity. Specification 261,013 is referred to.
Patent GB-808535-A (GB)
Title: Evaporation of liquefied gases with simultaneous production of mechanical energy
Inventor: WEBSTER THOMAS JOHN
IPC: F17C9/04
Filed: 1956-09-19
Abstract: 808,535. Vapour engine power plant. BRITISH OXYGEN CO. Ltd. Aug. 30, 1957 [Sept. 19, 1956], No. 28648/56. Class 122 (3). Liquefied gas of boiling point substantially below atmospheric temperature is pressurized and evaporated to provide a supply of the gas at a given delivery pressure and simultaneously to produce mechanical energy by compressing the liquefied gas to a pressure substantially in excess of the delivery pressure, evaporating the compressed liquefied gas and warming the soproduced gas, and then expanding the compressed gas to the delivery pressure to perform work in an expansion machine. Liquid methane is drawn from a thermally-insulated tank 10 by a pump 11 and discharged at a pressure, for example of 1000 p.s.i.g. to a heat exchanger 12 where it is evaporated and the methane gas heated to about 15 C., preferably by " free " heat from a heat source such as the atmosphere or a river, and then expanded in a machine 13 to the delivery pressure, for example 100 p.s.i.g., the expanding gas preferably being reheated to 15 C. from the same heat source in a further heat exchanger 14. In a modification, Fig. 3 (not shown), gas produced by heat inleak to the tank 10 is drawn from the top of the tank and compressed to the delivery pressure by a compressor driven by the machine 13, the compressed gas being discharged to the outlet from the heat exchanger 14. The liquefied gas may be liquid oxygen or liquid nitrogen and may be fed to the pump by vaporizing a part of the liquid in an external heating coil and feeding the so-formed gas back to the tank 10 which is thereby pressurized. The machine 13 may be a turbine or a reciprocating engine and may be coupled to the pump 11.
Patent GB-1006390-A (GB)
Title: Copolymerisation of oxymethylene-producing monomers
IPC: C08G2/00
Filed: 1964-07-13
Abstract: An oxymethylene producing monomer and another vaporizable monomer containing an epoxy group are copolymerized by vaporizing each of the monomers, mixing the vapours while maintaining their temperature above the maximum temperature at which the vapour will copolymerize, contacting the vapours with a copolymerization catalyst and copolymerizing the vapours at a reduced temperature. Trioxane is the preferred oxymethylene compound while butadiene dioxide, glycidonitrile, ethylglycidyl ether, glycidaldehyde, ethylglycidate, methylglycidate, ethylene oxide and propylene oxide are specified epoxy compounds.  Boron fluoride is the catalyst used in the examples but protonic acids, Lewis acids and metal halide complexes may be used.  The copolymer may be end-capped with acetic anhydride. Specification 770,717 is referred to.
Patent GB-1372918-A (GB)
Title: Fluid dispensing valve
IPC: F16K21/04
Filed: 1972-06-20
Abstract: 1372918 Filter-valve assembly BIO-RESEARCH LABORATORIES Ltd 20 June 1972 [29 July 1971] 28807/72 Heading B1D [Also in Division F2] A fluid dispensing valve comprises a valve stem 16 having a recess 34 locating the narrower end of a tapering spring 18, the wider end of which abuts the valve housing so that when the valve is opened the coils of the spring are spaced sufficiently close together that foreign matter particles in the fluid are effectively filtered.
Patent GB-735613-A (GB)
Title: Improvements in stretchers
IPC: A61G1/017
Filed: 1953-10-19
Abstract: 735,613. Stretchers. ARNOLD, R. Oct. 19, 1954 [Oct. 19, 1953], No. 28846/53. Class 108 (1). A stretcher has relatively telescoping side frame members 15, 16 having brackets 20 secured to them said brackets pivotally supporting the ends of a jointed sub-frame 17, 18 which normally lies flat but may be used as a seat or back rest when the side frames are telescoped. Clips 29 secured to the members 17 engage the members 15 when the stretcher is extended and maintain the sub-frame members 17, 18 in their over-centre position.
Patent GB-776052-A (GB)
Title: Improvements in steering gears for mechanically propelled vehicles
IPC: B62D3/12
Filed: 1951-12-10
Abstract: 776,052. Steering vehicles. BISHOP, R., and JOHNSTON, R. H. Dec. 10, 1952 [Dec. 10, 1951], No. 28937/51. Class 79(5). [Also in Group XXIV] In a vehicle steering gear comprising a rackbar 1 displaceable endwise in a transverse guide tube 3 by rotation of a meshing pinion 9 on the steering shaft, a freely rotatable roller 16 is spring-urged into contact with the bar 1 on the side thereof remote from the pinion 9. As shown the tube 3 is provided at one end with a bearing sleeve 4 within which the bar 1 is a close sliding fit. A plug 6 is in screw-threaded engagement with the sleeve 4 and a spring 8 reacts against the plug 6 on a slipper member 7 thrusting the bar 1 against the opposite side of the sleeve 4. The other end of the tube 3 carries a housing 10 for the pinion 9 engaging teeth 2 on the bar 1. The tube 3 is formed with three longitudinal channels equally spaced around its bore. Opposite the pinion 9 the housing 10 is provided with a projection 11. The bore of the projection 11 comprises a shoulder 18 and grooves 17, the grooves 17 being diametrically opposed and of less depth than the shoulder 18. Engaged with the grooves 17 are the ends of a spindle 15 carrying the roller 16 having a grooved periphery. The spindle 15 is received in open ended slots 14 formed in lugs 13 carried bya cup-shaped element 12 which is a relatively close fit in the projection 11, a spring 20 being provided between a threaded closure 19 and the element 12 to urge the roller 16 into engagement with the rack-bar 1 and maintain the teeth 2 in engagement with the pinion 9. Shims may be provided between the shoulder 18 and closure 19 to allow adjustment of the pressure of the spring 20.
Patent GB-173109-A (GB)
Title: Improvements in brackets or connections for attaching towel rails to wash stands
IPC: A47K10/10
Filed: 1920-10-15
Abstract: 173,109. Fowter, E. H., (trading as Fowler & Co., H.). Oct. 15, 1920. Clothes-racks.-A towel rail is attached to a washstand &c. by means of a pair of L-shaped brackets e carrying a pin or rod d on which are pivoted short tubes a to support the towel rails.
Patent GB-290907-A (GB)
Title: Improvements in and relating to tank wagons for the conveyance of inflammable volatile liquids
IPC: B60P3/24
Filed: 1927-11-01
Abstract: 290,907. Leonard, J., M. Nov. 1, 1927. Tanks.-In tank wagons of the kind in which the filling pipe b projects into a sealing vessel c, the vessel has an outlet controlled from outside the tank. 'The bottom of the vessel may incline towards an outlet normally closed by a valve e, opened by a lever r, the valve spindle being connected by a knuckle joint k with the operating rod l. A squared or hexagonal portion o is formed on the valve spindle for use in grinding-in the valve alter disconnection of the joint k.