baber/WOPTO huggingface dataset:
Patent GB-908183-A (GB)
Title: Improvements in or relating to valves for hydraulic control systems
Inventor: HAYES HUBERT GEORGE
IPC: F16K11/07
Filed: 1958-06-19
Abstract: 908,183. Fluid-pressure servomotor control systems. HAYES ENGINEERS (LEEDS) Ltd. June 11, 1959 [June 19, 1958], No. 19637/58. Class 135. [Also in Group XXII] A valve unit for controlling the flow of liquid in an hydraulic system comprises a spool valve member 14, Fig. 1, centralized longitudinally in a ported housing 1, 3 between opposed spring- loaded elements 16, each of these elements being movable away from a stop position by movement imparted to the valve member in the appropriate direction, the opposite ends of this member controlling similar orifices 29 through which separate flows of control fluid may be maintained and varied to create a pressure difference acting on the valve member to control its movements. In a servo system, Fig. 2, the control fluid is applied to opposite ends of the spool valve unit through a control valve 23 actuated by movements of a tracer, e.g. in a copying machine tool, to cause corresponding movements of the spool valve member 14. This member in turn controls the flow of servo pressure liquid, received at an inlet 7 of the unit housing, to and from the opposite ends of an hydraulic motor 13 which may impart a traversing movement to a part of the machine tool such as a worktable. In another embodiment, the unit housing is modified for connection through a manually or mechanically actuated changeover valve, to the hydraulic motor, and a second control valve also actuated by the tracer controls directly a second hydraulic motor e.g. for controlling the vertical traverse of the worktable.
Patent GB-884619-A (GB)
Title: Synthetic resin coating composition
IPC: C09D163/02
Filed: 1960-06-03
Abstract: Metal articles, e.g. steel panels, are coated with a composition comprising (1) 25 to 94% of an epoxy resin comprising the reaction product of a polyhydric phenol and an epihalohydrin (2) 1 to 25% of a polyvinyl acetal resin and (3) 5 to 70% of a polymer or copolymer of esters of acrylic or methacrylic acids. The epoxy resin may be derived from hydroquinone, resorcinol, bis-(4-hydroxyphenol)-2,2-propane or poly (hydroxyphenyl) pentadecanes and epichlorohydrin.  The polyvinyl acetal may be the formal, acetal or butyral and component (3) may be derived from the methyl, ethyl, butyl or isobutyl esters of acrylic or methacrylic acid.  The composition may also contain colloidal silica or a pigment and a catalyst for curing the epoxy resin, e.g. dicyandiamide, acid anhydrides, boron trifluoride or various amines.  The metal articles may be components of electrical equipment such as transformers, cutouts, capacitors and switchgear and may be coated with the above composition by the fluidized bed method or by spraying or brushing methods, the composition then being dissolved in a suitable solvent such as acetone-ethylene dichloride, followed by curing at, e.g. 200 DEG  C.  Specifications 518,057 and 579,698 are referred to.ALSO:A coating composition comprises (1) 25 to 94% of an epoxy resin comprising the reaction product of a polyhydric phenol and an epihalohydrin, (2) 1 to 25% of a polyvinyl acetal resin and (3) 5 to 70% of a polymer or copolymer of esters of acrylic or methacrylic acids.  The epoxy resin may be prepared by reacting hydroquinone, resorcinol, bis-(4-hydroxyphenyl)-2,2-propane or poly(hydroxyphenyl) pentadecanes with epichlorohydrin.  The polyvinyl acetal may be the formal, acetal or butyral and component (3) may be derived from the methyl, ethyl, butyl or isobutyl esters of acrylic or methacrylic acid.  The coating composition may also contain colloidal silica, or a pigment, and a catalyst such as dicyandiamide, maleic, chlorendic or pyromellitic anhydride, methylene dianiline, ethylene diamine, diethylene triamine, piperidine or boron trifluoride for curing the epoxy resin.  The composition may be used to coat metal articles by the fluidized bed method, or by spraying or brushing methods, using a solution of the composition in a suitable solvent such as an acetone-ethylene dichloride mixture.  Specifications 518,057 and 579,698 are referred to.
Patent GB-859509-A (GB)
Title: Stabilized acrylonitrile polymers
IPC: C08K5/17
Filed: 1957-05-06
Abstract: A composition comprises a polymer containing at least 80% of acrylonitrile, a solvent therefor, and an inhibiting agent comprising an organic metal sulphoxylate of the general formula: <FORM:0859509/IV(a)/1> where R is an alkanol group containing 1 to 3 carbon atoms, an acyl group containing 1 to 3 carbon atoms or an aryl group containing 6 to 8 carbon atoms, n is 1 or 2 and M is sodium, potassium or zinc, and a compound of the group consisting of an organic phosphite, a sulphonic acid as specified below, benzene phosphorous acid and benzene phosphonic acid.  The sulphonic acid may be o, m, or p phenol sulphonic acid, a phenol di-or tri-sulphonic acid, methylol sulphonic acid, 1-naphthol-2-, -3- -4-, -5-, -7- or -8- sulphonic acid, or a di or trisulphonic acid derived from 1-naphthol, Polymers and solvents which may be used are referred to in Specification 859,506.
Patent GB-699604-A (GB)
Title: Improvements in or relating to window structures
IPC: E05F17/00
Filed: 1952-08-06
Abstract: 699,604. Windows. COTE, A. J.. and COTE, A. C. Aug. 6. 1952, No. 19749/52. Class 20(iii) The upper, corners 56 of louvre-'type windows 48 are pivoted to nuts 54 travelling along rotating screws 26. Links 50 also connect the louvres to the stationary frame 52. The screws are in several lengths, numbers of which are coupled together by connecting members 40. One screw is driven from a hand-crank 94 or other means; the other screw is driven from the first through a horizontal shaft and intermediate toothed gearing housed in the bottom member of the window frame.
Patent GB-800862-A (GB)
Title: An automatic reversing installation for ships
IPC: B63H3/04
Filed: 1955-07-08
Abstract: 800,862. Reversible propellers. MADES, R. July 8, 1955, No. 19797/55. Class 114. [Also in Group XXXIV] In a ship's propeller installation, with feathering blades rotatably mounted in the propeller hub, in which the propeller shaft, provided with a thrust bearing, can be displaced axially between two limiting positions to change the setting of the blades, when the ship has way upon her the displacement is effected by the propeller slip stream acting on the blades in a direction opposite to the movement of the ship. A sleeve-like control head 22 secured against axial movement by a thrust block 24 rotates with an assembly comprising the main shaft 8, the propeller hub 14, 15 and propeller blades 18. An eccentric pin 20, Fig. 4, in a collar 29 at the bottom of the root of the blade is connected by a link 19 to a pin 21 on the control head 22 so that as the hub and blade are moved axially the link turns the blade to alter the pitch, the link in normal ahead working being at right angles to axis of the main shaft. In operation, if the main engine is de-clutched from the main shaft 8 while the ship is moving ahead, her slip stream or wake motion acting on the propeller displaces the main shaft axially and sets the blades to reverse position or ultimately to a feathering setting. When motion is slight or non-existent, a motor 7, preferably controlled from the bridge, acting through worm gearing 6 and screws 5 on the thrust block 24 displaces the shaft. Several forms of roller and ball thrust bearings are described (see Group XXXIV). A gland supplied with oil from a tank 12 above the water line 11 may seal the bearings. The blade which can be turned through 105, has a tapered root seated in the hub 14, 15 or a taper between two cylindrical portions. In a modification, as applied to a hollow propeller shaft enclosing a control rod for the variable pitch propeller, the rod is held stationary and the blade turns about a pin thereon. Specification 738,707 and German Specification 457,712 are referred to.
Patent GB-776710-A (GB)
Title: Magnetic materials of the ferrite kind
IPC: C04B35/26
Filed: 1955-07-08
Abstract: A ferromagnetic ferrite particularly one containing manganese and zinc contains 0.01-1 per cent by weight of calcium oxide in the boundaries separating grains forming the ferrite. Mn3O4 containing a small amount of CaO was prepared by heating carbonates of the metals in air at 950 DEG C. for 2 hours, or by coprecipitation of their oxalates.  It was milled with specified proportions of Fe2O3 and ZnO, compressed, and heated for four hours in nitrogen containing oxygen to the extent which resulted in a small proportion of FeO in the finished ferrite as described in Specification 730,703 [Group XXXV]. In alternative methods, calcium carbonate was added to a mixture of the three other oxides.  The heat treatment needed to produce a grain size in the ferrite resulting in optimum values of magnetic properties is discussed.  Cavities formed in the ferrite were found in the boundaries with optimum grain size.
Patent GB-746576-A (GB)
Title: Improved tripod green crop drier
IPC: A01F25/12
Filed: 1954-07-07
Abstract: 746,576. Drying crops. BARKER, R. E. July 7, 1954, No. 19879/54. Class 34(2). A tripod for use in drying crops has legs connected by a ring a and bar members b connecting adjacent legs and supported on holders c slidably adjustable on the legs.
Patent GB-716355-A (GB)
Title: Improvements in and relating to condensation and polymerisation products of ketone cyanhydrins and aldehydes
Inventor: ULLRICH ARTHUR
IPC: C08G16/02
Filed: 1952-08-07
Abstract: Saturated or unsaturated ketonecyanhydrins are reacted at elevated temperature in presence of basically active substances, e.g. NaOH, Na2CO3, pyridine, piperidine or organic amines with aliphatic saturated or unsaturated aldehydes. Reaction may be under pressure in presence of a solvent and in an inert atmosphere.  In Example 1 crotonaldehyde is condensed with acetonecyanhydrin in presence of methanol and caustic soda at 60-68 DEG C.  After neutralisation the mass is distilled in the water bath leaving a viscous residue.  In Example 2 crotonaldehyde is reacted with methylethyl-ketonecyanhydrin in presence of triethylamine.  Methylvinylketone-cyanhydrin is also mentioned as a possible reactant.  The products may be compounded with natural or synthetic rubber, cellulose derivatives, chlorinated rubber vinyl polymers.  They are also useful as binding agents for lacquers or for making insulating sheets in combination with cement. They may be used as emulsions, solutions or blends with oils or resins or may be mixed with fillers and/or dyestuffs.
Patent GB-502663-A (GB)
Title: Improvements in fuel injection pumps
IPC: F02M59/00
Filed: 1937-07-19
Abstract: 502,663. Fuel-injection pumps; universal joints. KRAVITS, A., and NEMES, A. July 19, 1937, No. 19912. Convention date, March 16. [Class 102 (i)] [Also in Group XXIV] A spring coupling 50 is inserted between a fuel-injection pump shaft 49 and its driving shaft 48 and the shaft 49 has a cam 54 engaged. by a tappet 56 loaded by a spring 57. The spring 57 is compressed and then during the delivery strokes of the pump plungers assists to drive the shaft 49 to maintain injection pressure over a. wide range of speeds. The Specification as open to inspection under Sect. 91 comprises also an arrangement employing a spring coupling shown in Fig. 1 (Cancelled), wherein the driving shaft 1 has an arm 10 located in a recess in a member 13 carried by the driven shaft 2, and engages a spring 14. The recess is shaped at 15 to increase the support of the spring 14 as it is defected. A buffer spring 16 co-operating with a shaped surface 12 is also provided. This subjectmatter does not appear in the Specification as accepted.
Patent GB-734200-A (GB)
Title: New and improved process for manufacturing colourless and light-stable paraffin wax and/or ceresin from dark coloured, crude waxy residues resulting from the treatment of mineral oil and tar
IPC: C10G73/42
Filed: 1952-08-08
Abstract: Crude waxy residues resulting from the treatment of mineral oil or tar are refined by de-oiling and then dissolving in a solvent, the solution then being subjected to treatment with bleaching adsorbents. In this way, colourless and light-stable paraffin wax and/or ceresin may be prepared.  De-oiling may be effected by passing the residues in the molten state in counterflow to a selective solvent, especially under increased pressure at a temperature above the normal boiling-point of the selective solvent.  The hot solution thus obtained is cooled, whereupon the wax is precipitated and is removed by filtration.  The de-oiled wax may then be dissolved in petroleum ether and the bleaching adsorbent then employed may be active charcoal or fuller's earth. If desired, the amount of solvent used to dissolve the de-oiled wax may be insufficient to completely dissolve the wax.  In an example, crude paraffin wax obtained from the dewaxing of mineral lubricating oil is de-oiled by extraction with acetone and the de-oiled wax is dissolved in light petrol and the solution heated with fuller's earth.  The fuller's earth is removed by filtration and the refined wax recovered by cooling and filtration or by distillation.  The melting-point of the refined wax may be varied by varying the temperature of the acetone extraction.
Patent GB-299505-A (GB)
Title: Improvements in or relating to thermionic valves
IPC: H01J21/02
Filed: 1927-07-27
Abstract: 299,505. Round. H. J. July 27, 1927. Vacuum tubes.-A valve having a cathode 2, a control grid 4, a screening grid 5 and an anode 3, all arranged transversely one behind another, is provided with an additional transverse grid 6 between the screening grid and the anode for the purpose of preventing secondary electrons emitted by the anode from passing to the screening grid. The transverse arrangement of electrodes is of the kind described in Specification 275,335. The grid 6 may be connected to the cathode or to earth; it may also be used in valves for low-frequency amplification.
Patent GB-386572-A (GB)
Title: Improvements in or relating to endless tracks for vehicles
IPC: B62D55/14
Filed: 1932-07-16
Abstract: 386,572. Endless track vehicles. KEGRESSE, A., 156, Rue Armand Silvestre, Courbevoie, France. July 16, 1932, No. 20185. Convention date, July 24, 1931. [Class 79 (i).] In a vehicle having an endless track comprising a flexible band 1 provided with transverse armour plates 5 the load-carrying rollers 6 are arranged on each side of the band 1 and run directly on the plates 5. The track is provided with guide blocks 2 which run between flanges 9 on the roller bodies and also between corresponding flanges on the driving wheels 10 and idler wheels 11. The idler and driving wheels bear on the band 1, and the driving wheels engage teeth 3 on the band to give a positive drive. Specifications 285,047 and 292,440, [both in Class 79 (i), Locomotives &c.], are referred to.
Patent GB-311144-A (GB)
Title: Improvements in or relating to carburetters for internal combustion engines
IPC: F02M7/22
Filed: 1928-07-11
Abstract: 311,144. Alexander, R. M., and Reed, A. July 11, 1928. Spray carburettors.-A carburettor is enclosed in a protective casing formed in three sections, the central section b being cast integrally with the mixing chamber g<1>, g<2> and float chamber e. The upper section forms an air inlet to the casing, and the lower section a sump. Within the mixing chamber is mounted a streamlined member f, an axial bore through which communicates with the float chamber by means of a vertical bore h and a duct m. A sleeve throttle valve g is adjustably mounted at n on a hollow rod i which passes through the bore in the member f and is provided with fuel outlet slots j. When the throttle is closed against the member f, fuel for slow running issues from the ends of the slots j nearest the outlet port g<3> and is mixed with air entering through the hollow rod. As the throttle is moved to the right, air enters the end g<1> of the mixing chamber to mix with fuel issuing from the right-hand end of the slots j.
Patent GB-1334923-A (GB)
Title: Aerosol dispensing valve assembly
IPC: B65D83/14
Filed: 1971-04-19
Abstract: 1334923 Pressurized dispensing container valves E H GREEN 19 April 1971 [10 Aug 1970] 20222/71 Heading F1R In a pressurized dispensing container valve, Fig. 2, which comprises a sprayhead 28 whose stem 34 seats in a spring biased plunger 48 reciprocably movable in a housing 36, there are provided on either the exterior surface of the plunger 48 or on the interior surface of the housing 36, more than two circumferentially spaced axially aligned teeth which during assembly are guided to mesh with a plurality of circumferentially spaced axially aligned ribs on the surface not provided with teeth so that the plunger 48 cannot rotate within the housing 36, there being, as shown, less ribs than teeth so that when assembled there are unoccupied spaces between pairs of teeth through which product may pass. The teeth 72 are on the plunger 48 and have chisel points 76 which during assembly are guided by slanting portions 86 on the housing ribs 82, 84. On its interior the plunger 48 has steps 66 which when the stem 34 is depressed communicates with an axial slot 66' in the stem to allow product which passes from a dip tube 58 held by a split ring 60 through the unoccupied spaces between pairs of teeth 72 to enter the bore of the stem for discharge. The plunger 48 has a split 80 to assist passage of the product. The stem 34 is rotatable within limits governed by a notch 68 in the lower end of the stem and by a stop 70, to vary the dispensing rate.
Patent GB-831708-A (GB)
Title: Improvements in and relating to a fan and water pump unit for cooling an internal combustion engine
IPC: F01P5/12
Filed: 1958-06-25
Abstract: 831,708. Axial-flow fans; stuffing-box substitutes. SOC. D'ETUDES ET D'APPLICATIONS INDUSTRIELLES, COMMERCIALES ET IMMOBILIERES INTER-TECHNIQUE. June 25, 1958 [June 26, 1957], No. 20336/58. Classes 110 (1) and 122 (5). [Also in Groups XXIV and XXVII] An I.C. engine radiator fan B, Fig. 1, freely journalled on the driving shaft 6 of a cooling water pump 3 is connectible thereto by an electromagnetic clutch F controlled by a thermostat G in the engine head so as to engage when a predetermined engine water temperature is reached and to remain engaged so long as a predetermined lower engine water temperature is exceeded. The clutch F comprises a driving coil member 37, mounted on an engine driven pulley D fast with the shaft 6, and a driven armature member 53 connected to the fan B via three tangential spring steel strips biasing the armature into the adjustable disengaged position shown where fibre or plastic sheets 59 thereon contact three screws 58. Current from the engine ignition circuit passes to one coil end 38 via the thermostat G, a brush 43 and a slip ring 39 secured by insulating cement to a plastic ring 41, the other coil end 46 being earthed via the shaft 6 and elements 18, 15, 17, 10, 11, Fig. 4, of a water pump packing gland, some of which may be by-passed by a conductor 60, and a carbon ring 11 of which contacts the pump body as through a layer of conductive oil containing metal salts. The packing gland is rotated by interengaging lugs 18a, 18b and comprises a brass ring 10 locating both the carbon ring 11 and a rubber ring 14 acted on by a stainless steel spring 15. Oil escape apertures 47 or 48 are provided and there may be one or more balance weights 50.
Patent GB-738067-A (GB)
Title: Improved process for the melt-spinning of synthetic linear polymers
IPC: D01F6/60
Filed: 1953-07-23
Abstract: In the melt-spinning of synthetic linear polymers, the polymer is extruded into a gaseous medium having any desired relative humidity, wound on bobbins, e.g. at a speed of the order of 1000 metres per minute, in an atmosphere having a relative humidity not higher than and preferably lower than 50 per cent and, after winding, is left in an atmosphere of this relative humidity for some hours, e.g. 2-36 and particularly 18-26 hours.  The atmosphere in which the bobbins are wound may have a temperature not lower than 20 DEG  C.  The bobbins, after being left for some hours, subsequent to being wound up, in an atmosphere of relative humidity not over 50 per cent, may be brought into an atmosphere of relative humidity over 50 per cent and subsequently unwound therein.  The polymer may be a polyamide which may be obtained by polymerization of aminocaproic acid or of caprolactam.  In the example such a polyamide is melt spun at 1000 metres per minute to form a 15 denier yarn in an atmosphere of relative humidity 65-70 per cent at 20-23 DEG  C., is wound on bobbins in an atmosphere of relative humidity 45 per cent at 20-23 DEG  C., and the bobbins are left in this atmosphere for 18-26 hours. They are then left for some hours in an atmosphere at 20-23 DEG  C. and relative humidity 65-70 per cent, and can then be unwound therein at speeds of over 200 metres per minute.
Patent GB-494278-A (GB)
Title: A machine for cutting a bar of plastic comestible into sections
IPC: B26D7/06
Filed: 1937-07-26
Abstract: 494,278. Cutting ice - cream &c. GAUNT, J. G. (Girdler Corporation) July 26, 1937, No. 20653. [Class 5 (i)] A machine for cutting bars or rods F, e.g. of wrapped ice-cream, water-ice or sherbet, butter or margarine, into sections, comprises parallel cutters 21, a fixed support 58 on to which the bars are fed singly and in succession, a reciprocating feeder 20 which forces the bars through the cutters and means for transferring the bars in succession from the support 58 to a position in front of the feeder. As shown, the invention is applied to cutting bars of ice-cream which are formed as described in Specification 474,540, [Group V], and passed through a refrigerator as described in Specification 474,541, [Group XIII]. The bars are released from holders 15 on the refrigerator conveyer and fall through the opening 14, when the sliding gate 16 is open, on to the support 58, rolling being prevented by the member 68, 69. The slide 44 carrying the feeder 20 is actuated through linkage 41, 42 by a cam-slotted member 38 engaged by a crank 36. The arrangement is such that the bars are advanced quickly to the cutters, and pushed slowly through them, the feeder 20 then returning rapidly. The bar F is pushed from the support 58 by a pusher 62 on a standard 64 secured to the feeder 20 and carrying, also, the gate 16. The bar F falls into a shoot 70 beneath which the feeder 20 travels, the bar F remaining in in the shoot, resting on the feeder whilst the preceding bar F is cut. The bars are centred before entering the shoot 70 by side plates 71 and a baffle plate 73 prevents them from skewing as they are dropped through the shoot. The front end of the feeder 20 has a curved recess 55, the top of which overhangs and is slotted to accommodate the knives when the feeder is fully advanced. The bar is pushed through centring side guides on the way to the cutters, one side guide being rigid and the other resilient. The cutters 21 are in the form of saw-blades arranged in two interdigitated and oppositely reciprocating sets, driven by two pairs of eccentrics on a common shaft. The cutters are attached, by slot connections, to holders 105, 107 and are urged upwardly by springs 111. A slotted guide 115 prevents the blades from turning. The eccentric rods 97 are provided with turnbuckle adjustments. The severed portions are discharged over a shoot 130, whilst the end scraps are directed into side shoots 131. Specifications 330,886, 332,593, [both in Class 29], 345,850, [Group XIII], 424,857, 424,858, [both in Group XVII], and 454,975, [Group XIII], also are referred to.