baber/WOPTO huggingface dataset:
Patent GB-954034-A (GB)
Title: Chromium containing catalysts and their manufacture
IPC: B01J21/16
Filed: 1960-08-11
Abstract: Butene-1 diluted with 90% nitrogen and water vapour respectively is dehydrogenated to butadiene by contact with the following catalysts:- (1) Al2O3 (25% alpha) 92%, Cr2O3 8%, specific surface 45 m2/g.; (2) Al2O3 (40% alpha) 89%, Cr2O3 10%, H2O 1%, specific surface 30 m2/g.ALSO:A catalyst comprises an alpha solid solution of aluminium oxide and chromium oxide in the rhombic form, wherein the aluminium oxide contains at least 20 wt. per cent alphaalumina, the catalyst presenting a true specific surface below 50 m2/g. The catalyst may also contain a Group Ia or IIb metal.  The examples describe the preparation of the following catalysts: (1) Al2O3 (25% alpha) 92%, Cr2O3 8%, specific surface 45 m2/g; (2) Al2O3 (40% alpha) 89%, Cr2O3 10%, K2O 1%, specific surface 30 m2/g.
Patent GB-740819-A (GB)
Title: Measuring device for ascertaining the required length of a part of a bearing
IPC: G01B5/14
Filed: 1952-11-05
Abstract: 740,819. Linear-dimension gauges. S.K.F. KUGELLAGERFABRIKEN GES., [formerly VEREINIGTE KUGELLAGERFABRIKEN AKT.-GES.]. Nov. 5, 1952 [Nov. 7, 1951], No. 27890/52. Class 106 (2). A device for finding the length of spacer sleeve for fitting between the rows of balls in a two-row ball-bearing, having an outer race ring and an arbor with two race grooves for receiving balls, comprises two sets of relativelyadjustable gauging elements adapted to be engaged respectively in the race grooves in positions, longitudinally of the bearing, corresponding to those of the balls in an assembled bearing, variation from a standard spacing between the gauging elements being indicated by a dial gauge, enabling spacer sleeve of suitable length to be selected. In Fig. 3, an arbor 3 is placed between two pairs of studs 9, 11 carried respectively by parts 15, 17 urged apart by a spring 19. The part 15 carries a dial gauge 13 whose plunger bears against the part 17. The studs 9, 11 have the same diameter as the balls and the outside dimension of each pair corresponds to the inner diameter of the outer race ring. After a measuring operation a stop 18 prevents the part 15 from sliding off the part 17. In Fig. 4 gauging is effected with the arbor 3 and outer race ring 5 in operative position. Cagelike structures 22, 23, which have cylindrical ball pockets 29 and tapered ball holders 27, are held by tubes 47, 45 respectively pushed one into the other and urged apart by a spring 37, longitudinal and rotary relative movement being restricted by pin 53 and slot 55. Each row of balls is retained by a spring 25 and slots 51 in the tube 45 tend to prevent the balls jamming. A measuring operation is effected by inserting the arbor 3 so that the balls 21 are in contact with the grooved ball races, the outer ring 5 is pushed on until it bears against the stand 49. The balls 21 are pressed outwards by the spring-loaded tube 45 and thus brought into working position. A dial gauge 13 indicates the size of spacer sleeve required, having been calibrated by means of an arbor 3 and ring 5 with a pre-selected spacer.
Patent GB-208123-A (GB)
Title: Improved process for the separation and fixing of the several constituents of atmospheric air
IPC: C01C1/26
Filed: 1923-11-06
Abstract: In a process for separating the constituents of air, the oxygen is removed by combination with carbon to give carbon dioxide and carbon monoxide.  The former may be combined with ammonium carbonate to give the bicarbonate which may be made to react with the carbon monoxide to give ammonium formate.ALSO:Oxygen, carbon dioxide and nitrogen are removed from air by combination and the water vapour contained therein is condensed. The oxygen is combined with carbon to give carbon dioxide which is fixed in the form of bicarbonates or as calcium carbonate. Carbon monoxide which is produced at the same time is combined with ammonium bicarbonate to yield ammonium formate.  The residual nitrogen is led to a rotary furnace containing siliceous or aluminous earth or other compound it is desired to convert to nitride.ALSO:Oxygen, carbon dioxide, and nitrogen are removed from air by combination.  The oxygen is combined with carbon to give carbon dioxide which is fixed in the form of bicarbonates or as calcium carbonate.  Carbon monoxide which is produced at the same time is combined with ammonium bicarbonate to yield ammonium formate. The residual nitrogen is led to a rotary furnace containing siliceous or aluminous earth or other compound it is desired to convert to nitride.  It is stated that aluminium nitride produced in this way may be oxidized catalytically to form aluminium nitrate. Sulphur may be used to combine the oxygen in place of carbon.
Patent GB-1052717-A (GB)
IPC: B65D85/32
Filed: 1965-07-01
Abstract: 1,052,717. Egg &c. boxes. M. SCHMIDT. July 1, 1965 [July 1. 1964]. No. 27947/65. Heading B8P. An egg &c. box has a body with egg &c. receiving pockets 2 and at least two upwardlyextending truncated pyramid-shaped spikes 3 which pass through holes 18, Fig. 1 (not shown), in a lid. The body may be moulded from compressed wood, paper fibre, &c. and the lid from a transparent plastics material. Claws 6 along the edges of the body snap over projections 19 on the edges of the lid to provide a hinge and fastener between the two parts. The body and lid have shaped projections &c. 7, 8, 9, 21, to support the eggs. Pockets 12 moulded in the lid for the eggs are of octagonal crosssection, and slots 11 in one end of the body permit ventilation.
Patent GB-679431-A (GB)
Title: Improvements relating to motor vehicle bodies
IPC: B62D47/00
Filed: 1950-11-15
Abstract: 679,431. Road-vehicle bodies. BARENYT. B. Nov 15, 1950 [Jan. 8, 1949; Feb. 1, 1949], No. 27991/50. Class 108(i) A road-vehicle body comprises end parts B, C of identical shape together with central part A which overlaps one of the end parts C. The central part may be constructed of lower part and an upper part which overlaps the part C and includes the windscreen ao and a rear window a. The joints b c between the parts are curved to increase the rigidity of the body.
Patent GB-650865-A (GB)
Title: Improvements relating to thermal responsive electric switches
IPC: H05B41/06
Filed: 1948-10-28
Abstract: 650,865. Thermal switches; switches partly magnetic. BRITISH THOMSONHOUSTON CO., Ltd. Oct. 28, 1948, No. 28035. Convention date Oct. 29, 1947. [Class 38(v)] [Also in Group XL(a)] A thermal switch particularly for starting discharge lamps, comprises a spring blade member 17 fixed at one end and carrying a contact 16 normally engaging a fixed contact 14. The contact-carrying or free end of the member 17 has an extension 18 lying within the path of movement of the end of a second spring member 13.. A wire 12 is connected between the free end of the member 13 and an adjustable bracket 23, and normally holds the member 13 against its spring bias in the position shown. When starting a discharge lamp, the starting current passes through the wire 12, heating it and as it expands, the wire allows the spring member 13 to move a disc shaped armature 19 carried by it, towards a permanent magnet 11. The disc 19 is now pulled rapidly into engagement with the magnet 11 and the end of the spring member 13 engages the extension 18 to snap open the contacts 14, 16. Should the lamp fail to start, the contraction of the wire 12 on the opening of the contacts 14, 16 is sufficient to move the spring member 13 back to its original position, so that the contacts are re-closed. But when the lamp has started, the normal running current passing through the wire 12 heats it sufficiently for the magnet 11 to be able to retain the armature 19 and so maintain the contacts open. The magnet 11 may have a non-magnetic coating so as to reduce its " holding force and the wire 12 may have an insulating coating to increase its thermal inertia to enable a sufficiently long starting or preheating period to be obtained.
Patent GB-473732-A (GB)
Title: Improvements in and relating to cartridge cases
IPC: B21D51/54
Filed: 1936-10-15
Abstract: Cartridge cases are made from aluminium alloys which are capable of being improved by solution heat treatment by a process wherein the heat treatment is carried out at the latest before the plastic deformation of the lower part of the case is completed. The solution heat treatment comprises annealing, quenching, and ageing, the latter being effected at room temperature for alloys of the aluminium-copper-magnesium type such as sold under the Registered Trade Marks "Avional" and "Duralumin," or at an elevated temperature for alloys of the aluminium-magnesium-silicon or aluminium-copper-silicon types.  The working of the neck of the case is preferably also completed after the heat treatment, and the effect on the physical properties of this portion is compensated for by further heat treatment at a temperature below the recrystallization point.  The base of a case rests in a bath of water, while the neck extends into a hot air chamber where it is treated for 10 to 20 minutes at 150-170 DEG  C.
Patent GB-426801-A (GB)
Title: Improvements in or relating to interlocking gas taps or cocks
IPC: F16K35/14
Filed: 1933-10-11
Abstract: 426,801. Interlocking taps or cocks. GAS LIGHT & COKE CO., RAMSAY, J., and NOBLE, T. G., 84, Horseferry Road, London. Oct. 11, 1933, No. 28092. [Class 135] An interlocking tap arrangement particularly for gas-heated devices consists of a main tap 4 and a pilot tap 5 both controlling a common through passage 3 with the pilot tap preceding the main tap, coacting members 8, 9 being provided on the taps to prevent opening of the main tap until the pilot tap has been opened. The member 8 is cut away at both sides 13 of the open position to allow it to be used for either right or left handed fixing. The pilot tube 14 may be mounted as an integral unit with the main tap 4 which has a passage way cut therein to allow gas to pass to the pilot tube when the tap 5 is opened but the tap 4 closed. Alternatively, a passage to the pilot tube is cut in the casing and extends part way around the plug 4. The member 9 may be formed of eccentric shape with a projection 16 thereon adapted to engage a part 17 on the member 8 so that operation of the tap 5 when both taps are open causes both taps to be turned rapidly to a position giving a minimum gas flow.
Patent GB-408020-A (GB)
Title: Process of and apparatus for recovering non-volatile metals, from volatilisation furnace residues
IPC: C22B5/10
Filed: 1932-10-10
Abstract: 408,020. Extracting metals. PEARSON, A., Reigate Lodge, Bessels Green, Sevenoaks, Kent. Oct. 10, 1932, No. 28137. [Classes 72 and 82 (i).] A process for extracting metals from complex ores or other metallurgical products containing the metals mainly in the form of oxide comprises subjecting the initial material to a reduction at a temperature sufficient to reduce both the volatile and non-volatile metals and to volatilize the volatile metals, but insufficient to fuse any of the non-volatile metals and the gangue, removing the volatilized metal, and thereupon,transferring the gangue to a separate zone, where it is subjected to a further heat treatment at a temperature above the melting point of the non-volatile metals, so as to separate them by liquation. The ore, mixed with excess carbon, may be charged continuously into a rotary drum furnace A, where the volatile metals are eliminated, the residues passing through a zone C, where reducing conditions are maintained by means of burners supplied with oil, powdered fuel &c., into a furnace B for melting the non-volatile metals. The gangue may be discharged as a clinker, from which the metal may be separated magnetically, or by gravity, after crushing. If a hearth or shaft furnace is used for melting, it is necessary to melt the gangue to form a slag. Products of combustion from the furnace B and the zone C may be passed directly into the volatilization furnace A.
Patent GB-496904-A (GB)
Title: Improvements in cathode construction for electron discharge devices
IPC: H01J1/20
Filed: 1937-10-15
Abstract: 496,904. Thermionic valves. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 15, 1937, No. 28141. Convention date, Oct. 16, 1936. [Class 39 (i)] [Also in Group XXII] In a thermionic cathode having radiating vanes 18 which support the emitting material directly or on gauze on the vanes, these are formed with arcuate extensions 21, Fig. 4, which, when the vanes are assembled together form a central cylinder for the heater. The vanes also have integral tabs 20 on their ends, which tabs are spot welded to top and bottom washers 19. To assemble the cathode a mandrel is used comprising a rod 24, two end discs 26 and nuts 27, the vanes and washers 19 being gripped between the discs 26 by screwing up the nuts ; wooden wedges 33 may be placed between the vanes, the wedges being held in place by a wire strap. The discs have holes through which a welding electrode may be passed to the washers. After welding the wire strap and wooden wedges are removed. A perforated heat shield 7 surrounding the cathode is carried by a reduced part 4 of the re-entrant stem, the control grid 12 being mounted on the larger diametred part.
Patent GB-803958-A (GB)
Title: Electronic valve holders
IPC: H01R33/76
Filed: 1956-09-14
Abstract: 803,958. Holders for thermionic valves. MONTECATINI SOC. GENERALE PER L'INDUSTRIA MINERARIA E CHIMICA. Sept. 14, 1956, No. 28169/56. Class 38 (1). A holder for a miniature valve having contact pins arranged in line with each other comprises a body 10 of flexible resinous material, such as P.T.F.E., formed with recesses 12 containing bodies of solder 19 connected to terminals 18. A valve is connected to the holder by placing a soldering iron against the body 10 to melt the solder bodies and then pushing the valve into position, the solder then being allowed to solidify. Removal of the valve is effected by again melting the solder, which remains in the recesses 12 when the valve has been removed.
Patent GB-719397-A (GB)
Title: Improvements in or relating to electronic apparatus for the storage of digital information
Inventor: WILLIAMS FREDERIC CALLAND
IPC: G11C11/23
Filed: 1951-12-03
Abstract: 719,397. Digital electrical calculating-apparatus. NATIONAL RESEARCH DEVELOPMENT CORPORATION. March 3, 1953 [Dec. 3, 1951], No. 28314/51. Class 106 (1). [Also in Group XL(c)] In a cathode ray tube store of the type in which a charge pattern is set upon the screen indicative of digits on a binary scale, means are provided whereby each signal from an associated pick-up plate causes the opposite charge to be set up on the screen. The circuit is described as applied to the system described in Specification 705,482, the gate unit between the amplifier 24, Fig. 1. and the control electrode 12 of the CRT being replaced by a Read Unit 29, Not Unit 31 and Write Unit 21. The Not Unit 31 is arranged to feed out a dash pulse in the absence of an input and to give no output when an input is applied from the Read Unit 29. The correct significance is thus available from the input or output of the Not Unit on alternate scans. In order that this may always be available the output from the read unit is gated by a Po pulse (as described in Specification 705,479), the first digit in a line being indicative of the correct significance of the following digits so that a two position device 35 is reversed or remains reset thus opening one of the gates 34, 39 and closing the other. The digits for the remainder of the period, until a reset pulse is received at the end of a line, thus pass through either the gate 34 or 39 to a buffer 40 which feeds a gate 41 supplied with inverted Po pulses to suppress any dash pulse in the first digit position to give a read out signal. Not Unit, Fig. 4.-Diode 53 is normally. conducting so that a negative-going dash pulse applied to the anode is fed out over cathode follower 54 to the write unit, Fig. 3 (not shown). If a negative-going dash pulse is fed from the read unit to inverting valve 43 the positive going output from cathode follower 46 causes diode 52 to conduct, thus biasing off diode 53 and preventing a dash pulse appearing in the output. In order to write in fresh information, a whole line is fed into the Write Unit 21 in the manner described in Specification 705,482, the regenerative loop being broken by a negative voltage fed to the Read Unit 29. Since this will result in dash pulses being fed from the Not Unit 31 a further voltage is fed in over a cathode follower and diode, Fig. 3 (not shown), to clamp the amplifier grid in the Write Unit and thus prevent dash pulses being fed to the C.R.T. grid.
Patent GB-1396122-A (GB)
Title: Process for preparing epoxy derivatives of phenol-containing  carboxylic acid
IPC: C07D303/22
Filed: 1972-06-16
Abstract: 1396122 Glycidyl ether-glycidyl esters of phenol containing carboxylic acids KAO SOAP CO Ltd 16 June 1972 [21 June 1971] 28326/72 Heading C2C Glycidyl ether-glycidyl ester derivatives of phenol-containing carboxylic acids are prepared by reacting phenol-containing carboxylic acids with epihalohydrin in the presence of an alkali metal hydroxide and an alkali metal carbonate or bicarbonate. Derivatives of phenolated oleic acid and phenolated safflower acid are exemplified.
Patent GB-1279322-A (GB)
Title: Method of treating or observing a surface
IPC: E04H4/16
Filed: 1969-06-05
Abstract: 1279322 Coating surfaces ROLLAB AB 5 June 1969 [5 June 1968] 28406/69 Heading B2L [Also in Divisions B3 and E2] A method of treating or observing a surface normally in contact with a gaseous fluid such as ambient air, comprises applying to the surface a hollow body 2 defining a chamber which is open adjacent the surface, the hollow body supporting a treating or observing tool or instrument (not shown), continuously sucking gaseous fluid (by a suction fan) from within the hollow body to create and maintain a partial vacuum within the hollow body so as to urge and retain the hollow body against the surface in opposition to the force of gravity, and causing the hollow body to travel across the surface while the treatment or observation is effected by the tool or instrument. In the construction shown in Figs. 1 and 2 the body carries two wheel assemblies 3, 4 each consisting of four wheels, one set being for allowing the body to travel in one direction and the other set for travel in a direction at right angles to the first direction. The body has a sealing strip 9 around its opening to engage the surface although it is stated that there is no need for a tight seal between the strip 9 and surface since this would render the operation of the apparatus difficult. The wheel assemblies are driven by a motor 5. The tool can be a brush, a blast nozzle or a paint spray gun, the instrument can be a sensing rod, a probe, or a television camera; operation of the tool or instrument can be governed by a control panel remote from the apparatus by means of a cable or via a radio link or a programming unit can be provided in the apparatus. The tool or instrument can be disposed either inside or outside the body. An alternative construction is described (Fig. 4) in which there are three rollers 10, 11, 12 supported between two side plates 13 the rollers being in contact with each other and two of them being in contact with the surface to form the chamber, the plates 13 are provided with sealing strips and the fan 7 (not shown) is provided in the chamber. One of the rollers contains the motor 5 for driving the rollers. The plates mount a wheel assembly.
Patent GB-616679-A (GB)
Title: Improvements in or relating to electric motor control systems
IPC: B60L7/04
Filed: 1946-09-23
Abstract: 616,679. Control of D.C. motors. GENERAL ELECTRIC CO., Ltd., and TURRALL, J. C. Sept. 23, 1946, No. 28412. [Class 38 (iii)] In order to keep the rheostatic braking torque exerted by an electric motor 4 driving a trolley vehicle, and having a predominantly series characteristic, to a safe value when the motor speed is high the excitation of the shunt field 23 is arranged to oppose that of the series field 5. When starting the shunt field may be connected across the starting resistor 2 to assist the series excitation and the shunt excitation will then decline by stages to zero as the motor is accelerated by operation of the contactors associated with the starting resistor 2. Final accelerating steps are the operation of the field weakening contactors 18, 19 and the contactor 16. Operation of the brake controller opens all the motoring circuits and closes contactors 16, 22, 25, whereby the braking circuit is closed with the armature also in series with the shunt field and the power supply. Initially the shunt and series excitations act in opposition since the generated motor voltage is in excess of the supply voltage but the shunt excitation dies away and then reverses as the motor slows down. In a modification (Fig. 2, not shown), maximum shunt excitation is provided during normal running. To reduce the size of the shunt winding without causing overheating on prolonged actuation of the brake controller, a relay coil 29 in the shunt field circuit may operate contacts to de-energize a contactor 22 under the maximum current conditions obtaining when the motor comes to rest. An associated retaining coil may be arranged as a '' slug " to prevent the relay operating on sudden changes of current.
Patent GB-390543-A (GB)
Title: Improvements in the manufacture of a material for use as a sound record carrier which is capable of being subsequently hardened, especially for the purpose of direct sound recording
IPC: G11B3/70
Filed: 1931-10-13
Abstract: A substance adapted to receive sound &c. record impressions by direct cutting of a recording stylus, and of being subsequently hardened chemically, consists of colloid materials such as glue, to which, for the purpose of reducing the hardness of the substance to facilitate the cutting, are added 0,2 per cent to 25 per cent of chemical compounds having a high boiling point. These compounds, which are not vaporizable without decomposition, may be glycol or its derivatives, glycerine or its derivatives, p-methoxypyridine, oxethylene, or the like, In this way a substance is obtained which does not become brittle and hard when changing from the sol-state to the gel-state. The adhesiveness and elasticity of the recording substance are then removed by adding chemical compounds which may form a component of the means for the subsequent hardening, such as certain kinds of simple or substituted sugars, particularly pentagalloylglucose.  The substance thus produced is used as a record carrier upon which direct recording by the action of a cutting stylus can be effected.  After recording, the substance can be hardened by treating it with a hardening fluid such as a solution of a bichromate or aldehyde, or a mixture of these at a suitable temperature.  Quick hardening may be effected by using an alcoholic solution of a bichromate while a mixture of bichromate and aldehyde in alcoholic solution is stated to be a very active hardening agent.  The Specification as open to inspection under Sect. 91 states also that the elimination of the hardness may be effected by the addition of differently configurated sugar kinds such as glucose, fructose or sacharose.  This subject-matter does not appear in the Specification as accepted.