baber/WOPTO huggingface dataset:
Patent GB-941299-A (GB)
Title: Improvements in and relating to electric traction systems
Inventor: SMITH GEOFFREY ARTHUR
IPC: B60L7/12
Filed: 1962-10-04
Abstract: 941,299. Control of several D.C. motors. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Oct. 4, 1962, No. 37606/62. Addition to 875,960. Heading H2J. Relates to electric traction equipment in which the voltage-sensitive means referred to in the parent Specification comprises a semiconductor device in combination with a highspeed contactor. In the case of high rates of increase of motor armature voltage, due to non-receptivity of the supply conductors during regeneration, a pulse is passed from potentiometer R7 through capacitor C, and Zener diode D breaks down at a comparatively low value of armature voltage. Triggering pulses are then applied to silicon controlled rectifiers SCR1, SCR2, through transformers T1, T2, whereby the bucking coil B of the high-speed contactor is energized. In the event of relatively slow increases in armature voltage, the potential at the junction of resistor R8 and capacitor C increases slowly so that the silicon controlled rectifiers conduct only when the armature voltage reaches a high value. Energization of coil B closes contacts LC1 to connect resistor RL across the armatures A1, A3 and A2, A4. Specifications 817,044 and 875,959 also are referred to.
Patent GB-1002841-A (GB)
Title: Improvements in reciprocating metering pumps
Inventor: DAWSON PETER HAYWARD TRUSSLER
IPC: F04B49/18
Filed: 1962-10-04
Abstract: 1,002,841. Reciprocating pumps. SINGER-COBBLE Ltd. Jan. 2, 1964 [Oct. 4, 1962], No. 37671/62. Heading F1A. Plungers 11, 12 are reciprocated in cylinders 13, 14 by screw and nut mechanisms driven through gearing 6, 7, 8 by a reversible electric motor 2, the position of reversal being adjusted by a tappet actuated reversing switch 30 which also controls inlet and outlet valves 15, 16 through solenoids 20, 22. The cylinders have separate inlets and a common outlet leading to a nozzle 25. The speed of the electric motor may be controlled and the gear ratio may be altered. In a modification the cylinders are coaxially arranged and various sizes of plungers may be accommodated by changing the gland devices in the cylinders.
Patent GB-1015272-A (GB)
Title: Incandescent cathode for electronic valves and process for producing same
IPC: H01J1/14
Filed: 1963-09-25
Abstract: 1,015,272. Cathode materials and processing. "PATELHOLD" PATENTVER WERTUNGS- & ELEKTRO HOLDING A.G. Sept. 25, 1963 [Sept. 27, 1962], No. 37709/63. Heading H1D. An incandescent cathode includes a support of tantalum, molybdenum, or tungsten/rhenium alloy, having an emissive coating containing tungsten, carbon, and thorium oxide, the coating having a mean grain size of approximately 1 Á, and containing not more than 2% of thorium oxide. The coating applied to the support may be separated from it by a galvanically applied diffusion-inhibiting layer of rhenium, and may consist of tungsten carbide containing thorium oxide, or a mixture of tungsten carbide and thoriated tungsten, or a layer of thoriated tungsten covered by a layer of tungsten carbide containing thorium oxide, or a layer of thoriated tungsten or thoriated tungsten/tungsten carbide mixture covered by a layer of carburized thoriated tungsten. The coating is applied, as a powder of grain diameter about 1 Á, by spraying, brushing, dipping, or electrophoresis from solution, and is subsequently melted or sintered in vacuum and, after incorporation in a discharge tube, activated by heat treatment. The applied powder may alternatively contain thorium nitrate and sugar, which yields thorium oxide and carbon upon heating.
Patent GB-523236-A (GB)
Title: Improvements in hinged structures
IPC: F21V17/00
Filed: 1938-12-29
Abstract: 523,236. Hinges. GENERAL ELECTRIC CO., Ltd., CHRISTOPHER, J. G., DEBENHAM, W. F. S., and PIKE, H. J. Dec. 29, 1938, No. 37737. [Class 65 (ii)] In a street lamp fitting of the kind in which the lamp is hinged to the glass closure, one member 2 can be moved relatively to the other member 1 about either hinge 3 or 3<1> by separating the parts of the other hinge by turning the hinge pin 4 or 4<1> so that the narrow side of a flat portion 8 is presented to a slot 9 in the barrel 5. The pin 4 may have a cylindrical part 10 fitting the barrel 5, in which case, when it is turned by the flap 13 to the position shown in Fig. 2, cam surfaces 16 on the end of 5 and on a collar 15 on 4 cause the pin to move axially against the spring 17 to disengage the part 10 from 5 and so allow the pin to be withdrawn from 5. Specification 492,769 is referred to.
Patent GB-795229-A (GB)
Title: Improvements in or relating to phthalic anhydride
IPC: C07C51/573
Filed: 1956-12-11
Abstract: Pure phthalic anhydride is recovered from its distillation residues, which have been obtained as a result of the distillation of phthalic anhydride produced by catalytic oxidation of aromatic compound.  The distillation residue is mixed in the molten state with an organic, predominantly hydrocarbon, material miscible therewith, the organic material being substantially non-volatile at the boiling point of phthalic anhydride, and the phthalic anhydride is distilled from the mixture.  The phthalic anhydride still residues are preferably mixed with a coal tar pitch which is a bituminous residue, from the distillation of coal tar, and heating the mixture under reduced pressure, e.g. under an absolute pressure of about 100 mm. of mercury, to a temperature of about 300 DEG  C., at which temperature the distillation of the phthalic anhydride is substantially complete. The phthalic anhydride vapours are collected and condensed and may then be subjected to further purification either by itself or with crude phthalic anhydride produced by the usual commercial methods. The coal-tar pitch left in the still retains the impurities originally present in the phthalic anhydride still residues, and remains liquid while hot so can be drained from the still and then solidified.  Other suitable organic materials which are substantially non-volatile. at the boiling point of phthalic anhydride, i.e. those which loose not more than 2 per cent by weight on prolonged heating at 300 DEG  C. at 100 mm. of mercury, and which are liquid at between 150 DEG  and 300 DEG  C., are coal tar pitch having a softening point below about 175 DEG  C., creosote oil or coke still oil, asphalts having a softening point below about 175 DEG  C., heavy lubricating oils and residual fuel oils obtained in the distillation of crude petroleum, or the heavy residual oils obtained from cracking processes.  Petroleum residues such as oil-gas tar pitch, water-gas tar pitch, fatty acid pitches derived from animal and vegetable sources, oils obtained by coal hydrogenation processes, some high-boiling organic liquids used as plasticizers and certain organic derivatives of silicon may also be used.  It may be necessary to remove a lighter fraction of some of the aforementioned materials before using them.  The proportion of organic material which is added, in relation to the non-distillable impurities in the residue, assuming the still residue contains approximately 50 per cent by weight of phthalic anhydride and 50 per cent impurities, is not lower than 1 : 5. The process is preferably carried out between 200 DEG and 330 DEG  C. at subatmospheric pressure.  Examples are given illustrating the use of various organic compounds in varying proportions.
Patent GB-1530845-A (GB)
Title: Process for the production of caprolactam
IPC: C07D201/04
Filed: 1977-09-13
Abstract: 1530845 Production of caprolactam BAYER AG 13 Sept 1977 [15 Sept 1976] 38105/77 Heading C2C The invention comprises a process for the production of #-caprolactam by the catalytic rearrangement of cyclohexanone oxime in the gaseous phase in a fluidized bed reactor on a catalyst containing boric acid in the presence of an inert gas, wherein the diameter of the non- stationary catalyst-free zones occurring in the fluidized bed reactor is controlled to remain between 5 and 40 cm. The zones may be controlled by vertical tubes installed in the reactor.
Patent GB-1240861-A (GB)
Title: Apparatus for cooking employing an oven
Inventor: MEDEIROS JOE LEWIS
IPC: F24B1/24
Filed: 1968-08-09
Abstract: 1,240,861. Solid fuel fired ovens. J. L. MEDEIROS. 9 Aug., 1968 [10 Aug., 1967], No. 38250/68. Heading F4W. [Also in Division A4] The invention relates to a portable oven including a grate for fuel, means to supply atmospheric oxygen to the grate, and a food-cooking area with a drip-pan above the grate, the oven having a removable cover which seals it against the ingress of oxygen when the cover is in position. As shown in Fig. 5, the walls 211 and cover 231 of the oven are surrounded by heat insulating material 241. The oven includes a circular grate 218 surrounded by a circular band of expanded metal 222, the grate area being divided into three by radially disposed partitions 205 of expanded metal which have bent end portions defining an updraft flue 206. Three spaced downdraft flues 208 and tunnels 234 also are provided. A wire frame 117 rests on the webs 205 and supports a drip-pan 119 and trays 125 for food. In use, the frame 117 is first removed and solid fuel is put into the grate, which is then covered by a plate having a removable central flue (not shown) registering with flue 206 and extending out of the top of the oven. Sand is then added over the top of the plate and encircles the hearth outside the circular band 222; the cover 231 is left off initially. The fuel is burnt and when the oven reaches the desired temperature, the upstanding flue pipe is removed and the support frame 117, together with the drip-pan 119 and trays 125 containing the food to be cooked are lowered into the oven and the cover 231 is put into position. The plate and heated sand remain in place over the hot fuel in the hearth. The apparatus of Fig. 1 can be used in a hole in the ground or (as shown) in a planter box containing earth 41. The oven contains its own grate 116 and updraft flue 106; downdraft flues 108 are covered by hinged lids 109 when the cover 131 is in position. The food trays 125 and drip-pan 119 are carried on a wire frame 117 having a yoke 130. The pan 119 carries a wire shelf 123 for supporting food. Radial fins 107 project from the outside of the oven into the earth 41.
Patent GB-844412-A (GB)
Title: Improvements in or relating to devices to prevent tampering with bottle closures
IPC: A47G23/02
Filed: 1957-12-09
Abstract: 844,412. Milk bottle holders. HOMEWOOD, D. G. Aug. 29, 1958 [Dec. 9, 1957], No. 38274/57. Class 18. A milk bottle holder having means preventing unauthorised access to the closure cap from above, comprises a wire frame surrounding and supporting the bottle and a rigid member 10 protecting the top of a pint bottle. To accommodate a half-pint bottle, a cover piece 17 mounted on an arm 20 is hooked to one end of the frame. A handle 11 and rubber feet 13 are provided. The holder may hang on a wall. A device indicating the amount of milk required and comprising a number of marked plates may be fixed to the cover piece 10. A front tie member 3 is lower than a corresponding rear tie 3 to facilitate entry of the bottles. According to the Provisional Specification the bases of the bottles rest on a platform and the handle is formed of a chain.
Patent GB-1151430-A (GB)
Title: Improved Design of Reciprocating Saws and their Suspension
Inventor: O'NEILLY WILLIAM JACK
IPC: A22B5/20
Filed: 1966-08-26
Abstract: 1,151,430. Reciprocating saws. FLAYMASTERS Ltd. 21 Sept., 1967 [26 Aug., 1966], No. 38283/66. Heading B5L. A power-driven reciprocating saw, such as for cutting carcases of beef, comprises a heavy end 1 housing an electric motor for driving the saw blade 9 and a lighter end 2 providing means for guiding and controlling the saw which is arranged to cut as it moves downwardly, the saw being returned by an adjustable means. The heavy end of the saw is counter-balanced by a spring device (14, Fig. 2) via a cable (15), the device being mounted on a bar (13) and pillar (12). A second cable (19) is also connected at one end to the saw and, at the other end to the piston rod (17) of a pneumatic cylinder (16). The end 2 of the saw is provided with a pair of handles 3 each having a lever-operated switch, one switch to operate the cylinder so as to raise the saw, the other switch to actuate the saw blade. When the cylinder switch is released the saw drops at a speed determined by the setting of a bleed valve. The saw blade 9 is provided with teeth on both edges and since the cutting is effected by only half the length of the blade it may be positioned so as to present four new cutting surfaces before resharpening is required.
Patent GB-880234-A (GB)
Title: Process for producing l-aspartic acid
Inventor: CHIBATA ICHIRO
IPC: C12P13/04
Filed: 1959-11-11
Abstract: L-aspartic acid is prepared by fermenting aspartase-forming bacteria selected from Pseudomonas fluorescens, Pseudomonas aeruginosa, Bacillus subtilis, Bacillus megatherium, Proteus vulgaris, Escherichia coli and Aerobacter aerogens in a nutrient medium comprising fumaric acid or a fumarate as the main source of carbon and ammonia or an ammonium salt as the main source of nitrogen, at a temperature of 27-40 DEG C, and isolating the L-aspartic acid produced.  The medium may also contain mineral salts such as potassium phosphate, magnesium sulphate and calcium carbonate, and organic nitrogen compounds such as meat extract, yeast extract and peptone; glucose or other sugar may be added.
Patent GB-920680-A (GB)
Title: Improvements in or relating to fork-lift trucks
Inventor: HAUXWELL JACK
IPC: B66F9/075
Filed: 1961-10-27
Abstract: 920,680. Controllers; control of D.C. motors. RANSOMES SIMS & JEFFERIES Ltd. Oct. 27, 1961, No. 38485/61. Class 38 (3). The battery powered traction motor of a fork lift truck is controlled in both speed and direction by a single pedal 25. This has a tiltable plate 45 biased to one side to give forward movement ; pressure on the other side against the bias operates a microswitch 57 for reverse. Acceleration is effected by normal depression of the whole pedal, which motion is transmitted hydraulically to a push-rod 73 which, as shown, is connected to a master drum controller 87. The motor is series wound, reversal is effected by changing the field connections and four speeds are obtained by first inserting two series resistors, then short circuiting one, next connecting them in parallel with each other and finally short circuiting both. An interlock switch prevents energization of the motor until the vehicle brakes have been released. It is stated that alternatively the push rod 73 could operate a carbon pile resistor, insert diverter resistors across the motor field, or operate an electronic voltage or current controlling device in the motor circuit.
Patent GB-1464039-A (GB)
Title: Electron bearm gun system
IPC: H05B7/00
Filed: 1974-09-03
Abstract: 1464039 Electron beam furnace C W HANKS 3 Sept 1974 [4 Sept 1973 29 April 1974] 38521/74 Heading H1D In an electron beam system, e.g. a furnace in which it is desirable to avoid impact on emitter 21 by positive ions and neutral species from the crucible 11, the beam is bent through an angle while being simultaneously focused by two magnetic lenses 61, 62 with their fields transverse to the beam, each formed by variable electromagnets. Such magnets formed from coils 31, 32, 33, 34, their cores and coils being embedded in water cooled Cu block 16, are in the furnace placeable over any suitable single or multipocket crucible in a suitable evacuated chamber. Magnets 31, 32 and the pair 33, 34 have separate polepieces 36a, 36b, 36c and 37a, 37b, 37c, which may be made contiguous; they may also be contoured for field correction. In operation the impact cross-section of the beam may be modified and the beam scanned across the crucible by co-ordinated variation of current in all four magnets; if scanning is not required magnet 34 may be permanent, supplying magnetic bias. Scanning perpendicularly may be provided by splitting coil 44 into separately variable parts 44a and 44b. In simple systems one or two of the four magnets may be eliminated (Figs. 4, 6, 7, not shown).
Patent GB-887943-A (GB)
Title: Improvements in and relating to upholstery spring units
Inventor: INGRAM WILLIAM ANTHONY
IPC: A47C7/30
Filed: 1959-11-18
Abstract: 887,943. Spring upholstery. NO-SAG SPRING CO. (GREAT BRITAIN) Ltd. Nov. 17, 1960 [Nov. 18, 1959], No. 39107/59. Class 52(4) In an upholstery spring assembly having sinuous springs 3 supported by a rigid frame 1 to give a cambered upper surface there is provided on top of the frame 1 a resilient cushioning edging of foamed rubber 5 which has an upper surface 6 leading on to the curve of the spring surface by a wedge-shape portion 6a which rests on and merges into the said surface. In a modification Fig. 3, the surface 6a becomes a frontal surface and the cushion strip has a lip 7. Specification 812, 478 is referred to.
Patent GB-915397-A (GB)
Title: Process for the recovery of capro-lactam monomer
IPC: C08G69/46
Filed: 1959-11-18
Abstract: Polycaprolactam containing caprolactam monomer is purified by evaporating the monomer from the polymer in the presence of inert gas and removing the caprolactam vapour from the inert gas stream by contact with liquid caprolactam.  The liquid caprolactam is preferably at about 75 DEG C.  The inert gas may be recycled, if necessary after drying at least a portion thereof.  A part may be replaced by fresh inert gas before recycling.  The condensed caprolactam may be used directly for polymerization. Specifications 676,585 and 798,659 are referred to.ALSO:Caprolactam monomer is recovered from polymeric caprolactam containing said monomer by evaporating the monomer from the polymer in the presence of inert gas and removing the caprolactam vapour from the inert gas stream by contact with liquid caprolactam.  The liquid lactam is preferably kept at about 75 DEG C. The inert gas may be recycled, if necessary after drying at least a portion thereof.  A part of the inert gas may be replaced by fresh inert gas before recycling.  The condensed caprolactam may be used directly for polymerization.  Specifications 676,585 and 798,659 are referred to.
Patent GB-971624-A (GB)
Title: Magnetic tape recorder arrangement
Inventor: HILL-VENNING JOHN
IPC: G11B15/60
Filed: 1959-11-19
Abstract: 971,624. Feeding magnetic tapes; guides. EPSYLON RESEARCH & DEVELOPMENT CO. Ltd. Nov. 7, 1960 [Nov. 19, 1959],No. 39251/59. Heading G5R. An endless tape recorder has the tape in a loose coil 12 generally surrounding the mechanism and the bight 42 joining the inner and outer convolutions is taken over a guide 28 comprising an inverted U with the arms 32, 33 curved outwardly without stretching such that all geodesics on its surface are of equal length. The guide 28 and the base 11 supporting the coil 12 may both be coated with PTFE to reduce friction, or the coil may rest on a ring or on radial rollers which may be driven. The base 11, tape 12, guide 28 and supporting means (not illustrated) for a pinch-roller 16 may be removable as a magazine unit, means associated with location means for the unit urging the pinch-roller into driving engagement with a capstan 15 and tape-pads 20, 21 into contact with heads 18,19.
Patent GB-1142550-A (GB)
Title: Apparatus for filling receptacles with liquid or paste-like products under aseptic conditions
Inventor: BOBRAKOV BORIS PETROVICH
IPC: B65B31/04
Filed: 1967-08-29
Abstract: 1,142,550. Filling barrels etc.; container filling machines. MOLDAVSKY NAUCHNOISSLEDOVATELSKY INSTITUT PISCHEVOI PROMYSHLENNOSTI. 29 Aug., 1967, No. 39433/67. Headings B8C and B8T. Apparatus for filling a band &c. 4, Fig. 1, with liquid or pasty substance under aseptic conditions comprises a dispenser with a chamber 1 engaged sealingly over the barrel &c. bunghole, a pipe 10 feeding steam to the chamber and barrel &c., another pipe 11 feeding sterilized liquid &c. to the chamber and barrel &c., air being removed from the barrel &c. during filling through a servo-controlled valve 24, 27, Fig. 2, and the dispenser including a bung-removing and replacing head 14, 17. The apparatus may be automatically controlled by the pressure developed in the barrel 4 as the liquid is supplied, but in the form shown is controlled automatically by the weight of the barrel and its contents. In use, an empty barrel 4, with its bung screwed home, is placed upon a platform 35, Fig. 1, of a scales, thus automatically energizing a motor 29 to drive a lifting screw &c. 2, 30 and raise the barrel against the open lower end of the dispensing chamber 1. The bung 39, Fig. 3, has a square socket 41 which engages the correspondingly-shaped lower end of a bung-unscrewing shaft 14, Fig. 2, having spring-biased bung-engaging and holding shoes 17. If the lower end of the bung-engaging shaft 14 does not slide straight into the bung socket 41, a spring-biased nut 20 engaging a worm 12 on the shaft allows the latter to slide a little upwards. When the top of the barrel 4 has engaged firmly against a sealing ring 9 around the open mouth of the dispensing chamber 1, the motor 29 is automatically switched off and a motor 40 switched on. The latter drives through a worm and worm-wheel 18 and a sliding key to the shaft 14, which rotates in the nut 20 thus unscrewing the bung 39, the holding shoes 17 retaining the bung as the shaft is screwed upwards away from the barrel 4. The bung 39 having been fully withdrawn, steam is admitted through the pipe 10 to the dispensing chamber 1 and the barrel 4, until they are sterilized. Next a simple servo 13 is energized to project a tube 24 into the barrel bunghole, the tube opening through a chamber and port 27, 28 to atmosphere to allow venting of air from the barrel. Simultaneously, sterilized liquid &c. is admitted by a valve 3 through the pipe 11 to the dispensing chamber 1 and the barrel 4. When the barrel 4 has been filled, its increased weight acts through the scales 35 &c. to shut the valve 3 and stop the flow of sterilized liquid. The servo 13 is energized to withdraw the valve 24, 27 from the bunghole, and the motor 40 drives to re-insert the bung 39 in the bunghole. The air-valve 24, 27 and the distributing chamber 1 are sterilized by passing steam through them, and the motor 29 operates to lower the barrel 4, drawing the bung 39 off the shaft 14.
Patent GB-1008571-A (GB)
Title: Improvements in or relating to electric upsetting machines for resistance-heated blanks
IPC: H05B3/00
Filed: 1964-09-29
Abstract: 1,008,571. Upsetting machine. MASCRINENFABRIK HASENCLEVER A.G. Sept. 29, 1964 [Oct. 24, 1963], No. 39536/64. Heading B3H. In an electric upsetting machine, blank supporting cheeks 3, 4 are disposed between the anvil and jaw electrodes 1, 2. The cheeks are preferably of a ceramic material and may contain additional heating means such as an induction coil, or alternatively cooling passages or spray jets. The blank 5 is upset against the anvil or a die plate attached thereto, after the clamping jaws 2 have been opened, by axial pressure applied by a piston and cylinder unit 5. Specification 1,008,572 is referred to.