baber/WOPTO huggingface dataset:
Patent GB-754358-A (GB)
Title: Improvements in or relating to process of producing pyrrolidone carboxylic acid
Filed: 1954-06-01
Abstract: Pure pyrrolidone carboxylic acid is prepared by extracting said acid from a mixture containing it and glutamic acid with a solvent comprising 85-96 per cent by weight of a saturated ketone containing 3 to 5 carbon atoms and 15-4 per cent by weight of water, separating solid glutamic acid from the resulting solution, adding a saturated straight chain monohydric alcohol boiling in the range 100-200 DEG C., concentrating the resulting solution at least until saturation with respect to the pyrrolidone carboxylic acid has been reached, and crystallizing and separating said acid from the resulting solution. Ketones specified are acetone, methyl ethyl ketone and diethyl ketone, a preferred solvent comprising 90-96 per cent by weight acetone and 10-4 per cent by weight water.  Alcohols specified are butanol and pentanol, preferably 1 to 5 parts by weight butanol per part by weight pyrrolidone carboxylic acid being present in the solution. The starting mixture is preferably obtained by heating a glutamic acid suspension to between 85 DEG  C. and reflux temperature until equilibrium is reached, the resulting mixture of glutamic and pyrrolidone carboxylic acids being preferably decolorized before applying the separation process.  The mixture formed on addition of the aqueous ketone solvent is preferably stored for 1-24 hours before separating off the glutamic acid.
Patent GB-1504727-A (GB)
Title: Target for an ultrasonic wave camera device and devices incorporaing such a target
IPC: G01S7/52
Filed: 1975-04-18
Abstract: 1504727 Image pick-up tubes THOMSONCSF 18 April 1975 [19 April 1974] 16206/75 Heading H1D An ultrasonic camera tube target includes a substrate for exposure to the ultrasonic waves, a layer which includes a pyroelectric material, and means for transferring the ultrasonic energy into thermal energy which is transmitted to the pyroelectric material. In the embodiment of Fig. 1, the pyroelectric layer 2 is of monocrystalline glycocol sulphate supported on a glass substrate 1, and coated with an ultrasonic absorptive layer 3 of porous antimony trisulphide. In other embodiments the layers 2 and 3 are deposited on the substrate in the opposite order (Fig. 2, not shown), or a single layer which is both pyroelectric and ultrasonically absorptive is formed either of a dispersion of pyroelectric crystals in an absorbing substance, or of pyroelectric crystals having interstices left therebetween. The signal is read out from a signal plate 7 when the inner surface of the target is scanned by an electron beam, the absorptive layer 3 being chosen to have a capacitance large compared with that of the pyroelectric layer, e.g. layer 3 may be of resin filled with metallic powder.
Patent GB-1147614-A (GB)
Title: Carburetor choking device
IPC: F02M1/10
Filed: 1966-04-13
Abstract: 1,147,614. Spray carburetters. BENDIX CORP. April 13, 1966 [April 19, 1965], No. 16242/66. Heading F1B. A carburetter mixture passage downstream of the shaft 18 of an eccentrically mounted choke valve 16 is formed with a step 38, which cooperates with the major portion 17 of the choke valve along a range of angular positions of the choke valve extending from the closed position thereof and including the partially open (broken line) position 21, to form a restricted flow path 40 past this side of the choke valve. The broken line position shown corresponds to the engine fast idle running speed. The choke valve is automatically operated, Fig. 3 (not shown), by means (46) responsive to inlet manifold suction and means (56) responsive to the temperature of the exhaust manifold. The main fuel jet 29 opens into a Venturi 30, itself located within a Venturi 28.
Patent GB-170332-A (GB)
Title: Improvements in and relating to means for providing additional protections and cushions for soles and heels of boots and shoes
IPC: A43C13/04
Filed: 1920-06-17
Abstract: 170,332. Spiller, A. June 17, 1920. Protectors, construction of.-A protector of rubber or other material consists of a strip or belt shaped to the outline of the sole or heel and having a series of dome or other shaped projections. As shown, the sole pad is formed with a central tongue having two crosspieces. A heel pad has a V- shaped tongue, within the outer strip. Specification 26524/12 and 138,195 are referred to.
Patent GB-702210-A (GB)
Title: Improvements in or relating to agricultural tractors provided with hydraulically operated tool controlling rams
Inventor: BOXALL EDWARD DONALD
IPC: F15B13/06
Filed: 1950-07-01
Abstract: 702,210. Multiple-way valves; hydraulic machines. BROCKHOUSE ENGINEERING (SOUTHPORT), Ltd. June 27, 1951 [July 1, 1950], No. 16476/50. Classes 69 (2) and 135 An agricultural tractor comprises a plurality of hydraulically-operated rams for actuating tools carried by the tractor, each ram being controlled by a valve. As shown, two rams connected to pipes 33, Fig. 1, each controlled by a valve comprising a loose-ball closure member 28 are urged by a spring 9 against a seat 30. The closure members are unseated by push rods 35 acted on by a selector mechanism comprising cams 71, 72 rotatable by shaft 83 and so arranged that either or both valves may be opened or both closed. Pressure liquid is supplied through a line 23 past a valve 26 and unseats both members 28 and passes to both rams. The selected mechanism is then moved to the desired position to hold, e.g. one member 28 in open position, and the valve 26 is opened and line 23 connected to exhaust as described in Specification 702,209. Thus the ram controlled by the seated valve closure member remains in its operated position while the ram controlled by the unseated closure member returns to its original position. The selector mechanism is held in its adjusted position by a spring-loaded ball 80, Fig. 2, co-acting with a number of detents 81.
Patent GB-545258-A (GB)
Title: Improvements in or relating to apparatus for sintering ores and the like
IPC: F27B21/06
Filed: 1940-11-14
Abstract: 545,258. Sintering ores. CONSOLIDATED MINING & SMELTING CO. OF CANADA, Ltd. Nov. 14, 1940, No. 16482. Convention date, Dec. 2, 1939. [Class 82 (i)] The ignition burner of a sintering apparatus is flexibly suspended and arranged to oscillate transversely over the surface of the charge, at a uniform speed in one direction and at an accelerated rate in the opposite direction. The burner 5 which is enclosed in a hood 13 is oscillated by means of a cam 8 the followers 9 of which is carried on the pipe 11 which supplies the burner, the cam and follower being kept in contact by means of a counterweight 15. The cam shaft 7 is preferably rotated by the means which drives the pans 2.
Patent GB-165970-A (GB)
Abstract: 165,970. Potter, E. B. April 12, 1920. Self-driving plant.-Comprises a thermo-electric system for power production in which water and oil are split up or passed into a gaseous state by means of an electric arc, and the resulting gases utilized to drive a prime mover coupled to a dynamo, a portion of the current produced being utilized in the arc and the remainder being available for power purposes. Fig. 1 shows one form of the apparatus. At starting, a mixture of water and oil or steam and oil is projected through a pipe p on to an electric arc formed in an inner chamber g. When incandescence is complete, the oil supply is reduced to a minimum or cut of. The gases produced are utilized to generate steam in a boiler e connected to a turbine l, or the gases may pass direct to the turbine. The turbine is coupled to a dynamo m, which generates the current forming the electric are and also supplies surplus current for other purposes. At starting, the arc may be formed by current from an independent source, or auxiliary heating means h utilizing current from accumulators k may be employed.
Patent GB-966374-A (GB)
Title: Door handles for 'back to back' fixing
IPC: E05B1/00
Filed: 1963-04-27
Abstract: 966,374. Door handles. E. HOLDEN & CO. (B'HAM) Ltd., and E. J. HOLDEN. April 27, 1963, No. 16633/63. Heading A4U. Door handles 10 are secured back to back on opposite sides of a door 12 by means of a spindle 11 threadedly engaged within the tapped ends 103 of the handles 10 and extending through the central non- circular, e.g. polygonal, holes in a rose washer 13 provided with oppositely disposed flats 131, engagable by a jawed tool, such as a spanner, whereby rotation of the rose washer 13 and hence the spindle 11 draws the handles together to be clamped on the door 12. Resilient washers 14 are located between the door 12 and the rose washers 13; and caps 15 having tongues 152 are a push fit over the rose washers 13.
Patent GB-1349192-A (GB)
Title: Device for impregnating an article with a gaseous substance
IPC: B65D83/14
Filed: 1971-05-24
Abstract: 1349192 Infuser device CIBA-GEIGY AG 24 May 1971 [25 May 1970] 16670/71 Heading B2F [Also in Division A2] An infuser device for infusing gaseous substances and aerosols into articles, such as cigarettes comprises two telescoping cylinders 10, 20, provided with pistons 17, 21, the narrower cylinder 10 being hollow to receive an article such as a cigarette C and the wider 20 containing a dispenser 29 and communicating with the interior 10a of cylinder 10 through passages 25 so that as the cylinders 10, 20 are telescoped together a chamber 24 expands and a vacuum is formed in the hollow interior 10a. The dispenser 29 is pushed down by cylinder 10 until it abuts a flange 20a. Further telescoping of cylinder 10 into cylinder 20 actuates the valve of dispenser 29 while at the same time slide valves 27 close the passages 25. The dispenser 29 comprises a valve stem 35 having passages 64 closed by gasket 49 communicating with a collapsible annular container 55 for the substance to be dispensed and passages 40 closed by gasket 34 communicating with a container 52 of propellant. Depression of valve stem 35 opens passages 40, 64 so that propellant passing through the spray head 60 entrains the substance to be dispensed through aperture 62. In another embodiment, Fig. 2, the passage 26a communicating chamber 24 with the hollow interior 10a is remote from piston 21 so that the interior 10a is subjected to a vacuum at the same time as the gaseous substance is dispensed. Vents 70 with pressure relief valves allow the cylinders 10, 20 to be drawn apart. (For Figures see next column)
Patent GB-1460223-A (GB)
Title: Switches
IPC: B60R25/02
Filed: 1974-04-17
Abstract: 1460223 Hand actuating devices for switches TAKIGEN MFG CO Ltd 17 April 1974 [18 April 1973] 16702/74 Heading H1N [Also in Division E2A] A barrel lock 10 has switches 20a, 20b, 20c, 20d, mounted on its rear with their actuators 21a-21d on the same line parallel to the axis of the lock cylinder such that an extension 31 on a key 30 can actuate at least one switch. Notches is different keys, all fitting lock 10, can be provided in the extension 31 so that one or any combination of switches can be operated, the switch actuator adjacent the notch not being operated.
Patent GB-940802-A (GB)
Title: Improvements in processes for preserving potatoes or potato pieces
Inventor: JR ROY LEE SHAW
IPC: A23L19/12
Filed: 1961-05-08
Abstract: In preserving potatoes, raw, peeled whole or divided potatoes are parboiled, partly dried and frozen, the frozen potatoes or pieces of potato are defrosted, boiled again and preserved in a closed container with an aqueous starch solution.  The defrosting and further boiling may be effected in the closed container.  The preserving solution preferably contains at least 1% of starch. According to one example, partially dried, frozen potato pieces 25 mm. X 25 mm. X 12 mm., having 68% moisture outside and 34% inside, were placed in cans, heated to 82 DEG  C. and covered with a suspension of maize starch, potato starch or wheat flour; the cans were closed and were then heated for 75 mins. at 119 DEG  C. according to another example, frozen, diced potato pieces with 12 mm. side, of nowhere more than 68% or less than 40% moisture, were partly rehydrated by being left for 20 mins. in water at 88 DEG  C; two parts of a white sauce from melted butter, wheat flour, salt, pepper and warm skimmed milk were then added to the potato pieces, the mixture was placed in a pudding bag and frozen, the bag and its contents being heated in boiling water for 13 mins. when required.
Patent GB-1216710-A (GB)
Title: Improvements relating to textile drafting means
IPC: D01H5/74
Filed: 1968-04-08
Abstract: 1,216,710. Drafting slivers. SCHUBERT & SALZER MASCHINENFABRIK A.G. 8 April, 1968 [8 April, 1967], No. 16714/68. Headings D1D and D1F. In apparatus for drafting slivers as claimed in claims 1 or 2 of Specification 1,171,632 individual drafting devices have balloon-type fibre control means i.e. rollers with elastic covers or belts centrally unsupported. Balloon type upper rollers or a balloon type upper belt running over a pair of suitable rollers and optionally a belt tensioning roller may co-operate with a normal lower belt. The lower rollers or belts may also be balloon type. The balloon-type belts may be supported by balloon-type rollers.
Patent GB-950385-A (GB)
Title: Vinylboron compounds and their production
IPC: C08G59/40
Filed: 1962-05-01
Abstract: The invention comprises vinyl boron compounds having the formula: <FORM:0950385/C2/1> where R represents an ethylene or a methylethylene radical and R1 represents a hydrogen atom or an alkyl radical containing 1 to 20 carbon atoms.  The novel compounds may be made by reacting a dialkanolamine HO-R-N(R1)-R-OH with a vinyl boron compound of the formula CH2=CH-B(OR11)2, where R11 represents a hydrogen atom or an alkyl group containing 1 to 6 carbon atoms, so as to eliminate water or an alcohol of formula R11OH or both and form the six-membered ring. The reaction may be effected in an inert solvent, preferably a hydrocarbon with which the water or alcohol can be removed as an azeotrope. Preferably the reactants are mixed, under an inert atmosphere, e.g. nitrogen, in a hydrocarbon solvent, the mixture is heated to reflux and the water or alcohol produced is removed as it is formed as an azeotrope by distillation.
Patent GB-944744-A (GB)
Title: Method for increasing polyamide viscosity
IPC: C08L69/00
Filed: 1962-05-01
Abstract: A process for increasing the viscosity of synthetic linear polyamides comprises subjecting polyamide-forming reactants of the type which are capable of forming polyamides having recurring carbonamide groups as an integral part of the polymer chain, which groups are separated by at least two carbon atoms to a condensation reaction by heat treatment at a temperature in the range of from 180 DEG C. to 300 DEG C., permitting the reaction to reach at least 95% completion, and thereafter introducing into the reaction mass a polycarbonate having a molecular weight in excess of 5,000 and in an amount of 0.1 to 10% of the weight of the polyamide to be formed. Many polyamides and polycarbonates of conventional types are specified.  In the examples, modified polyamides are made from:-(II) to (VI) hexamethylene diammonium adipate and 2:2-bis(4-hydroxyphenyl) propane polycarbonate and (VII) hexamethylene diammonium adipate and a resorcinol polycarbonate.  U.S.A. Specifications 2,071,250, 2,071,253 and 2,071,948 are referred to.
Patent GB-882211-A (GB)
Title: Low temperature cold-treatment plant
Inventor: STARKE HORST
IPC: F25B9/06
Filed: 1958-05-27
Abstract: 882,211. Refrigerating. MASCHINENFABRIK NEMA VEB. May 27, 1958, No. 16844/58. Class 29 A refrigerant condenser is cooled by gas from an expansion turbine. As shown in Fig. 1, chamber 9 is cooled by a compression system comprising evaporator 8, compressor 6, expansion valve 7 and condenser 5, the latter being cooled by cold gas derived from expansion turbine 4. Gas is supplied to turbine 4 by compressor 1 through cooler 2 and heat exchanger 3 cooled by cold gas flowing back to compressor 1 from condenser 5. As shown in Fig. 2, gas compressed by compressor 10 flows through coolers 11, 12 and part then flows through condenser 14, expansion valve 15 and evaporator 16 in chamber 17. The other part flows through expansion turbine 13 and then cools condenser 14. Gas from condenser 14 and evaporator 16 then effect cooling in cooler 12 and return to compressor 10.
Patent GB-273701-A (GB)
Title: Improvements relating to protective devices for electrical apparatus
IPC: H02H5/04
Filed: 1927-06-24
Abstract: 273,701. Buchholz, M. July 1, 1926, [Convention date]. Transformers. - To prevent deterioration of conductors and their insulation in transformers, &c. due to overload, there is arranged in the circuit a conductor, e.g. g, which, before the overload becomes serious, becomes hot and operates an alarm or cut-out device. The conductor may be enclosed in paper, cotton, asbestos, oil, &c. the decomposition of which by heat produces bubbles of gas which operate a contact device h, or the conductor may be hollow and filled with carbon tetra-chloride, alcohol, ether, &c. the vapour pressure of which operates a switch. The figure shows the invention applied to a threephase transformer. Specification 198,936 is referred to.
Patent GB-638058-A (GB)
Title: Improvements relating to fans
IPC: F04D29/28
Filed: 1948-06-23
Abstract: 638,058. Table fans. LEE, B. June 23, 1948, No. 16912. [Class 110(i)] A table fan impeller is built up of a number of concentric rings 3 spaced apart by short fan blades 5. The edges of the rings, which are co-planar, project slightly beyond the ends of the blades.
Patent GB-565673-A (GB)
Title: Improvements in or relating to gulley, sink and like gratings
IPC: A47L19/02
Filed: 1943-11-25
Abstract: 565,673. Gratings for gullies, sinks, &c. ARCHER, 0. J. Nov. 25, 1943, No. 16962/42. [Class 26] [Also in Group X] Gratings for gullies, sinks, &c. consist of cantilever prongs 2 projecting from the peripheral framework towards the centre of the grating, a free zigzag space 3 being left between the ends of the prongs across the middle of the grating. The prongs, which end in points 4 to facilitate cleansing, are level on their under surfaces and inclined downwardly on their upper surfaces. Lugs 5 may be provided on the underside of the framework of the grating to raise it from its usual seating.
Patent GB-668714-A (GB)
Title: Binocular attachment for microscopes
IPC: G02B21/20
Filed: 1950-07-07
Abstract: 668,714. Microscopes. ZEISS-OPTON OPTISCHE WERKE OBERKOCHEN GES. July 7, 1950 [July 9, 1949], No. 16991/50. Class 97 (i). A binocular attachment for microscopes comprises a casing housing a beam splitting prism system and is characterized in that the two oculars are carried by the cover of said casing, said cover being rotatable about an axis passing normally through the centre thereof, and in that one ocular is rotatable relatively to the cover about an axis which is parallel to the axes of said oculars and the axis of rotation of the cover and is spaced therefrom. The attachment shown is suitable for inclined observation and includes a casing 1 attachable to the body of a microscope and housing a prism system. This system consists of a rhomboid prism .10 and two prism members 8, 9 having a partially reflecting interface 8<SP>1</SP> on which are incident light rays which pass from the microscope through a glass block and are reflected internally by a further prism 12 (Fig. 2, not shown), so as to be inclined to their original direction. The prism 8 and one ocular tube 4 are fixed to the cover 3 of the casing 1 and the prism 10 and ocular tube 5 are mounted eccentrically on a disc 3<SP>1</SP> which is mounted in a recess in the cover for rotation about an axis B parallel to and spaced from the rotary axis E of the cover 3 so that ocular tube 5 may be rotated relatively to the cover to vary the interocular distance indicated by a scale 17.
Patent GB-908819-A (GB)
Title: Improvements relating to inflatable craft
Inventor: NICHOLL GEORGE WILLIAM ROBERT
IPC: B63B7/08
Filed: 1960-05-13
Abstract: 908,819. Inflatable craft. AVON INDIA RUBBER CO. Ltd. March 24, 1961 [May 13, 1960], No. 16997/60. Class 113. The bottom of an inflatable craft is insulated by having two skins 5 and 6, separated by an inflatable tubular component 7 of natural or synthetic material, such as P.V.C. sheet, secured to the bottom skin 5 by fabric straps 9 or individual fabric loops. The component 7 may have undulations in a common plane or be of spiral shape. The underfloor space may be ventable.
Patent GB-894829-A (GB)
Title: Improvements relating to elevating conveyors
Inventor: ROOKE SYDNEY WILLIAM
IPC: B65G17/12
Filed: 1958-05-28
Abstract: 894,829. Endless chain elevators. SOVEX Ltd. May 28, 1959 [May 28, 1958], No. 17064/58. Class 78 (1) Trays 2 on frames 1, each supported about an axis 8 on an endless chain 5 passing round sprocket wheels 6, 7 are guided vertically by a roller 10, an anti-friction pad 10a, and a roller 11 with a flange 11a engaging guide tracks 9a on either side of the chain. As the chain passes round the wheels 6, 7, the roller 11 or its pivot 13 is engaged by notched pilot wheels 16, 17, respectively, driven at the same speed as the sprocket wheels, the tracks being divided in order that the roller 10 on the rear of the chain passes round the track 9b and the roller 11 on the front of the chain passes round the track 9c. To prevent swaying of the frames 1 from front to back, they are provided with anti-friction pads 14 which bear against track surfaces 15. Additional rollers 18 or slipper blocks may be provided to engage guide tracks 19, 19a or rails 20 at suitable locations. The sprocket wheels 6, 7 may each be replaced by two smaller wheels, in which case the pilot wheels are each replaced by a chain provided with notches in the outer sides of its links.
Patent GB-244009-A (GB)
Title: Improvements in or relating to variable electric condensers and the like
Filed: 1925-07-03
Abstract: 244,009. Hesketh, B. July 3, 1925. Condensers; transformers.-In a variable condenser of the type in which capacity variation is obtained by varying the distance between two electrically conductive plates, capacity variation is effected by the rotation of a spindle having upon it two threads of different pitch. The plates 1, 2 are carried on insulating blocks 3, 4 respectively engaging threads 6, 7 of different pitch on a spindle 5 which is rotatable relatively to the blocks to vary the distance between the plates. A pin 13 prevents relative rotation between the blocks and has a reduced neck 15 acting as a stop by engaging a pointer 16, an indicating scale being provided such as a circular scale on the top of the block 3 in Fig. 3, or the helical scale 18 in Fig. 1 co-operating with the pointer 18<a>. The plates may be mounted directly on the blocks or on a seating member such as a resilient member 10, and the blocks may be separated by a spring 12. In Fig. 2, the plates are shown as having a hole 19 to admit the pin 13, a lug 20 for screwing to a terminal, and a hole 22 for the spindle 5, the hole 22 being continued as a slot 23, the edges of which are bent up at 24 to engage recesses 25 in the blocks, while the slot serves to prevent eddy currents. In Fig. 3 the block 4 is integral with the body 26 of a radio transformer or the like which the condenser may be adapted to tune.