baber/WOPTO huggingface dataset:
Patent GB-819198-A (GB)
Title: A process for the manufacture of isobutyraldol
Inventor: JR HUGH JOHN HAGEMEYER
IPC: C07C45/60
Filed: 1957-12-17
Abstract: Isobutyraldol is produced from isobutyraldoxan by bringing the pH of the isobutyraldoxan to a value of from 4 to 6 by the addition of an aqueous solution of an aliphatic carboxylic acid without allowing the temperature to rise substantially above 20 DEG  C., splitting the isobutyraldoxan into equimolecular quantities of isobutyraldol and isobutyraldehyde by distilling the aqueous mixture in a distilling column with a base heater while keeping the pH in the range of 4-6 by further addition of the dilute aqueous solution of aliphatic carboxylic acid, removing from the top of the distilling column a mixture of isobutyraldehyde and water, recycling water to the distilling column, and removing isobutyraldol from the base of the distilling column.  If desired the process may be carried out continuously by making isobutyraldoxan in an aldol reactor by the condensation of isobutyraldehyde in the presence of alkali and water, converting the isobutyraldoxan as above to isobutyraldol and isobutyraldehyde and recycling the isobutyraldehyde to the aldol reactor.  The preferred aliphatic carboxylic acid is acetic acid. The isobutyraldol may be hydrogenated, preferably in the presence of Raney nickel to give 2.2.4-trimethyl-1.3-pentanediol.  The reactions may be represented as follows <FORM:0819198/IV (b)/1> In the examples isobutyraldehyde is fed continuously to an aldol reactor containing sodium hydroxide as catalyst; the product is neutralized to a pH of 5-6 with a dilute solution of acetic acid and the crude aldol reaction product is fed to a distillation column together with acetic acid to maintain a pH of 5-6 and the mixture is distilled; the isobutyraldehyde formed is recycled to the aldol reactor and isobutyraldol is withdrawn at the bottom of the column; if desired the isobutyraldol is hydrogenated in the presence of Raney nickel to give 2.2.4-trimethyl-1.3-pentanediol. Similar results are obtained if isobutyric acid or propionobutyric acid is used instead of acetic acid.
Patent GB-1000327-A (GB)
Title: Composition and method for brightening cadmium and zinc
IPC: C23F3/06
Filed: 1963-10-04
Abstract: An acid bath for brightening cadmium and zinc surfaces is prepared from a dry powder mixture comprising a trivalent chromium compound, a water soluble fluoride, sulphate or a mixture of these, and a water soluble acid nitrate selected from urea nitrate, urea nitrate and the nitrate salts of inorganic bases, urea nitrate and sulphamic acid, and sulphamic acid and the nitrate salts of inorganic bases, the acidity being sufficient to give a pH of 0.2-3.5 when the powder is added to water in an amount sufficient to provide 0.08-5 gms./litre of trivalent chromium ions.  On a dry weight basis the powder contains 1-25% of a trivalent chromium compound, up to 50% of the soluble salt and 25-95% of the acid nitrate.  The chromium may be added as the fluoride, sulphate or nitrate, the fluoride and sulphate as the salts and acid salts of the alkali metals and ammonia and the nitrate salts of inorganic bases may be of chromium, cadmium or zinc. The composition may also contain zinc and cadmium as sulphates, nitrates and fluorides. The powder is added to water in amounts of 6-250 gms./litre to produce a bath containing 0.08-5 gms./litre trivalent chromium ions, 1-90 gms./litre nitrate ions, 0.4-26 gms./litre fluoride and/or sulphate ions and optionally 0.1-15 gms./litre zinc and/or cadmium ions. The working temperature of the bath is 45-150  DEG F.
Patent GB-1375426-A (GB)
IPC: H01H37/50
Filed: 1972-08-23
Abstract: 1375426 Thermal switches CORNING GLASS WORKS 23 Aug 1972 [26 Aug 1971] 39197/72 Heading H1N A high temperature thermostat comprises a metal wire 12 inside a glass or glass-ceramic tube 11, wire 12 having a higher thermal coefficient of linear expansion than tube 11 and being attached to one end 11a of tube 11 and being coupled adjacent the other end with resilient means 16, 19 biased to maintain wire 12 under tension and having normally closed contacts 16b, 19b which open at or above a preselected temperature. Expansion of wire 12 causes contact spring blades 16, 19 to move to the right until the bent end of blade 16 engages adjustable stop 22 when blade 19 continues to move to the right breaking contact. In a second embodiment, Fig. 3 (not shown), the metal wire 32 is kept under tension by an arm 36 of a snap switch 35 (unspecified), and expansion of wire 32 operates switch 35.
Patent GB-1488739-A (GB)
Title: Printers
IPC: B41J2/215
Filed: 1975-09-25
Abstract: 1488739 Selective printing OKI ELECTRIC INDUSTRY CO Ltd 25 Sept 1975 [30 Oct 1974] 39250/75 Heading B6F In a high speed printer in which an ink mist from a tank 127 is bombarded with ions produced by electrodes 101, 102 the surrounding air is heated by a resistance heater 122, which may comprise constant temperature resistors, to reduce corrosion. The ions pass through an aperture board 103 towards paper 113 and their passage is controlled by the charge applied to the surface of the board 103. Supersonic vibrators in tank 127 produce the ink mist. Unused mist is recirculated and separated.
Patent GB-340768-A (GB)
Title: Improvements in and relating to bituminous road surfaces
IPC: E01C7/18
Filed: 1929-12-23
Abstract: A composition for use in paving roads comprises a graded stone or other aggregate coated with an emulsion of tar or bituminous material or bituminous or tar compositions liquid in the cold. The cold liquid compositions may be obtained by the addition to relatively viscous tar or bituminous materials of organic diluents or liquefying agents such as unsaturated hydrocarbon oils.  The aggregate may consist of relatively coarse material mixed with a proportion of finer material.
Patent GB-346273-A (GB)
Title: Safety clamp for railways automatically signalled
IPC: B61L1/18
Filed: 1930-01-06
Abstract: 346,273. Railway signals. STIRLING, R., Fellholme, Bishopthorpe, York. Jan. 6, 1930, No. 39379/29. Drawings to Specification. [Class 105.] A portable electric coupling device for putting to danger the signals of a railway line which is automatically signalled by track occupation or which is provided with track-controlled signals which go to danger on track occupation comprises a pair of clamps joined by a wire and provided with T-screws by which they can be clamped on the two rails. The main limb of each clamp is of open box-like form to receive the wire when not in use.
Patent GB-1321430-A (GB)
Title: Thread feeder for a circular knitting machine
IPC: D04B15/48
Filed: 1970-08-18
Abstract: 1321430 Knitting machines TEXPATENT Sarl (TEXPATENT GmbH) 18 Aug 1970 [19 Aug 1969] 39631/70 Heading D1C A positive yarn feed for a circular knitting machine comprises, at each knitting station, a rotating former 2 on which yarn windings are advanced by lamellae 13 which move outwardly to project from the former and forwardly and inwardly and backwardly within the former. Drum 2 is carried on a shaft 29 rotatably mounted in a stationary support 5 which carries winding-on guide eye 52 and take-off guide-eye 54. Strips 13 are oscillatable radially in slits in drum 2 by cam bodies or eccentrics and axially by cam 138. In another arrangement, Fig. 6, the coil 102 is held by two groups of alternating strips controlled by cams 148, 158. In another arrangement Figs. 8, 9, drum 2 is rotatable on a fixed spindle 3 and has part circular recesses 135 in which are located rods 13 carried on plates 131, 132 rotatable about parallel offset axes. Thread breakage detectors 90, 91 are provided in this arrangement. In a further arrangement, Fig. 11, two rollers 207, 208 arranged end to end have radial webs 207a, 208a projecting longitudinally beyond their ends into the gaps of the webs of the other roller. Roller 207 is rotatable by belt 41 through disc 4 clutch parts 212, 213 operated by guide eye 54 and shaft 210 while roller 208 is freely rotatable on bearing 209 whose axis is at a small angle to the axis of shaft 210. Pins 207b on roller 207 engage recesses 208b on roller 208.
Patent GB-1431123-A (GB)
Title: Metallurgical lances
IPC: C21C5/46
Filed: 1973-08-22
Abstract: 1431123 Metallurgical lances GR-STEIN REFRACTORIES Ltd 15 Aug 1974 [22 Aug 1973] 39696/73 Heading F2P [Also in Division F4] A lance for the treatment of molten metals comprises a steel tube 1 with a refractory coating held in place by circumferentially spaced anchor studs 2 and galvanized barbed wire 4 wound round the steel tube, so that the barbs form supplementary anchor points. The refractory coating may be applied by locating the tube in an open-topped mould and vibrating the mould to compact the refractory material round the anchor points and then applying a final pressing operation. The coating may be a chemically bonded alumina or magnesite refractory and the chemical bond may be a phosphate or a calcium polyphosphate. The refractory material may be dried after moulding by applying an electrical heating element inside the tube.
Patent GB-1404757-A (GB)
Title: Gas turbine engine blades
IPC: C08J5/08
Filed: 1971-08-25
Abstract: 1404757 Gas turbine blades ROLLS-ROYCE (1971) Ltd 25 Aug 1972 [25 Aug 1971] 39777/71 Heading F1T A hollow gas turbine blade contains a sheet-like solid insert 14 spaced from the blade walls by inclined fins 16 defining passages forming a spirallike coolant fluid flow-path around and along the insert. The fins 16 and insert locating pimples (15), indicated by crosses, may be integral with the blade walls. Insert 14 is brazed at one end to the blade but is otherwise unattached to permit differential expansion. Some of the coolant leaves the spiral path through holes (20), 21 in the leading and trailing edges 10, 11 respectively, the path decreasing in flow area towards blade tip 12 to compensate for the reduced flow. The remaining coolant escapes through holes (22) adjacent tip 12 and flows along channels (24) in the underside of shroud (23). The coolant may be liquid, air or other gas. The blade may be for a rotor or stator.
Patent GB-994885-A (GB)
Title: Steroid compounds
IPC: C07J5/00
Filed: 1961-11-08
Abstract: The invention comprises steroids of the general formula <FORM:0994885/C2/1> wherein R represents an alkyl radical containing 1 to 8 carbon atoms or a cycloalkyl radical, and the preparation thereof by reacting 3,20-diketo - 6a  - methyl - 17a  - acetoxy - 4 - pregnene with methyl or ethyl orthoformate in the presence of a strong mineral acid or an organic sulphonic acid in the presence of a solvent to form the 3-methyl or 3-ethyl ether respectively of the above formula.  The C3 to C8 alkyl enol ethers of the above formula are prepared by refluxing 3,20 - diketo - 6a  - methyl - 17a -acetoxy-4-pregnene with the required alcohols in the presence of an organic sulphonic acid preferably p-toluenesulphonic acid, and removing water from the reaction mixture.  Pharmaceutical compositions useful as oral progestogens contain as the active ingredient steroids of the above general formula
Patent GB-1467015-A (GB)
Title: Preparation of beverages
IPC: B67D1/00
Filed: 1975-09-01
Abstract: 1467015 Mixing liquids in proportions BRITISH SYPHON INDUSTRIES Ltd 1 Sept 1975 [13 Sept 1974] 40075/74 Heading B1C In a method of preparing a beverage from a diluent and selected liquid concentrate(s), the latter are supplied by a plurality of positive displacement pumps having a common drive, the concentrate(s) to be included being selected by opening the appropriate pump delivery conduit(s). In an apparatus the diluent is supplied under gas pressure from a container 10 to dispensing taps 22, 24, and the concentrates 14, 16 are pumped by pumping means 20 comprising piston pumps 36, 38 driven by a common motor 40 and shaft 42 through springs 50 which provide lost motion against back pressure when the delivery pipe of a respective pump is closed. The pump strokes may be adjustable. In other arrangements the springs may be replaced by slipping clutches, or the delivery of concentrates not required as beverage constituents may be diverted by pressure relief valves to recirculation conduits.
Patent GB-881271-A (GB)
Title: Improvements in clothes washing machines
Inventor: BOUYGUES JEAN CLAUDE
IPC: D06F37/22
Filed: 1958-12-12
Abstract: 881,271. Washing-machines. GENERAL MOTORS, FRANCE. Oct. 16, 1959 [Dec. 12, 1958], No. 40134/58. Class 138 (2). [Also in Group XIII] A unit comprising a tub 8, a rotatable drum 9, and a motor 10 is pivotally suspended in a cabinet or frame 13 on inextensible hanger arms 14, 15, the planes containing the pivot axes of the respective arms converging to an axis which is outside the cabinet or frame. The hanger arms 14, 15 are pivoted at 16, 18 and 17, 19 respectively and may comprise pairs of levers, as shown, or single pressed units. In an alternative arrangement (not shown), the arms 14, 15 may be convergent upwardly. For washing, drive is transmitted through a belt 5 and pulley 6, and for spin drying, through pulleys 1, 12, a pulley 11 driven by the motor 10 being clutchable to pulley 1 or to a pulley driving the belt 5.
Patent GB-896029-A (GB)
Title: Improvements relating to endless conveyors
Inventor: MORTON PHILIP
IPC: B65G65/00
Filed: 1959-11-27
Abstract: 896,029. Scraper conveyers; shoots. BABCOCK & WILCOX Ltd. Nov. 21, 1960 [Nov. 27, 1959], No. 40337/59. Class 78 (1). In a fuel feeding apparatus comprising a shoot 61 leading downwards from a hopper 56 to a scraper conveyer for feeding the fuel to a furnace 69, the conveyer scrapers are arranged to contact a plate 65 hinged at its upper end 66 so that each scraper rocks the plate inwardly into the shoot to loosen and agitate the fuel therein, and then releases the plate to allow the loosened fuel to fall freely on to the conveyer. A shut-off valve 58 is also provided in the shoot. The conveyer scrapers 10 are of stepped form (see Fig. 2) connected between a pair of endless chains 6, 8 passing over driving and tensioning sprocket - wheels 18, 16, respectively. The scrapers feed the fuel over an upper plate 34 and beneath an adjustable trimming-plate 62, the fuel falling from the rear edge 36 of the plate 34 on to a lower plate 40 where it is fed by the lower run of the scrapers towards the furnace. The forward edge of plate 40 is adjustable in position by screw-and-nut means 50 acting on the plate 40. A rotary projector 68 disposed below the forward edge of plate 40 is driven continuously within a housing 74 which is removable for cleaning. Specification 870,472 is referred to.
Patent GB-1046190-A (GB)
Title: Improvements in or relating to timepiece lever escapements
IPC: G04B15/14
Filed: 1964-10-05
Abstract: 1,046,190. Clocks and watches. KIENZLE UHRENFABRIKEN G.m.b.H. Oct. 3, 1964 [Oct. 9, 1963], No. 40432/64. Heading G3T. A timepiece lever escapement in which impulse faces are located on the escape wheel teeth and in which the draw angles depend upon the angles of the pallets with respect to the lever, comprises pallets each of which has parallel sides and a thickness of about 0.05 mm to 0.2 mm, one flat side of each pallet forming a locking face and one end of each pallet co-operating with the impulse faces of the escape wheel teeth.
Patent GB-1066794-A (GB)
Title: Improvements in or relating to porous shaped articles of metal fibres
IPC: B22F3/00
Filed: 1963-10-14
Abstract: A sintered metal fibre body of predetermined porosity is formed either by winding the fibres in the form of a long sliver and then sintering, or by compressing fibres in a mould by means of a lid which is fixed relative to the mould and sintering the compact in the closed mould, the sintering conditions in both cases being such that no volume change takes place.  The process is applied to steel fibres which may be coated with or mixed with a powder such as copper or bronze. The sintered body may also be impregnated with a synthetic resin, a ceramic, a metal, e.g. metals of Groups III - V, particularly Al and Cr, metal compound, alloy mineral or a mixture of these. The sintered body may also be further compacted e.g. by rolling.  In one embodiment Fig.3 (not shown) a steel fibre sliver (14) is wound on a roller (12) with a tension of 20 Kgm.  The shaped body formed was then sintered at 1100 DEG C. in nitrogen so that no volume change occurred in the body.  In an alternative embodiment fibres are stacked in a mould which may have grooves or projections on the inner walls or thin intermediate members between the side walls to prevent packing of the fibres.  A cover is placed on the fibres and is weighted to compact the fibres to a predetermined volume, the cover being fixed in position in the mould either by locating pins (3) or cross ribs (6) Fig.1 (not shown).  Sintering under a protective atmosphere produces no volume change and the porosity of the sintered body may be as high as 99%.
Patent GB-900819-A (GB)
Title: Improvements in sheet feeding machines
IPC: B65H9/06
Filed: 1958-12-17
Abstract: 900,819. Feeding sheets. BACKHOUSE, H. T. Dec. 3, 1959 [Dec. 17, 1958], No. 40701/58. Class 100 (1). In sheet-feeding apparatus wherein sheets are fed in succession over a feed-table 10 beneath a smoother blade 31 and up to a front lay 11, means is provided for moving the blade forwardly relative to the lay face and also downwardly, after registration of a sheet, to permit removal of the sheet. As shown, the table 10 is of the sectional construction, each section baving frontlays 11 carried on a lever 12 which is rocked by a cam-operated second lever. A two-part boss 18 depending from the front lays carries a pivot-pin 20 on which is a bell-crank lever 22, 23, the latter arm being forked to engage a fixed or adjustable pin 25, whereby when the lays 11 are lowered by the lever 12, the bell-crank 22, 23 is rocked about the pin 20 to move the arm 22 away from the lays in the forward direction. The arm 22 carries a resilient angle member comprising a top member 31, which is forked and provides the smoother blade, and a vertical limb 30 which is fixed at its lower end and urged towards the arm 22 by a screw and nut 36, 37. The height of the blade 31, and its inclination to the feed-table 10, can be adjusted by the screw and nut 36, 37. In a modification, the smoother blade is carried by a block which can be adjusted vertically on an arm similar to 22, Fig. 1.
Patent GB-1507863-A (GB)
Title: Pyrophoric lighters
IPC: F23Q2/16
Filed: 1975-10-06
Abstract: 1507863 Lighters WILKINSON SWORD Ltd 5 Oct 1976 [6 Oct 1975] 40816/75 Heading F4F A lighter comprises a spark wheel 8 actuated by a manually-operable-button 5 pivotally mounted for arcuate motion around the wheel axis 9, in which the button comprises one bar 13 of a pivotal linkage, which is a unitary moulding of plastics material of which integral flexible webs 17 provide inter-bar-pivots. 15, 16. Button 5 has a forked-blade 12 which actuates two ratchets 10 to drive wheel 8, when the button is depressed against a spring 18. Gas valve 2 is operated by a forked lever 3 whose arm 4 is actuated by button 5.
Patent GB-1485783-A (GB)
Title: Air vent
IPC: B01D46/10
Filed: 1974-09-19
Abstract: 1485783 Air vent filter LUWA AG 19 Sept 1974 [21 Sept 1973] 40947/74 Heading BIT An air vent comprises walls 1 defining an air passage, a support 5 on the walls to support a filter plate 3 (or a plurality of plates in series), a plurality of "L" shaped leaf springs 9 to press the filter plate 3 against support 5 and a seal 11 around the filter plate 3 to seal the space between the edges of filter plate and the walls of the passage. A resilient intermediate layer may be interposed between filter plate 3 and support 5. The "seal" at the edges of the filter plate may be permanently resilient or permanently plastic.
Patent GB-1028858-A (GB)
Title: Improvements in or relating to dentists forming apparatus
IPC: A61C9/00
Filed: 1964-10-08
Abstract: 1,028,858. Moulding wax. K. BELTER. Oct. 8, 1964, No. 41013/64. Heading B5A. Apparatus for trimming wax bite blocks comprises a plate 55 on a laminated body 53, 54, 21, 61 of which the bottom plate 61 is extended at one edge to carry a U-shaped metal support 64 in which a metal trough 66 is held by a locking member 67. The body is recessed to accommodate a thermostat switch, heating element and warning lamp unit. In use the bite block is placed on the heated plate 55 and manually pressed. The bottom of the block melts and by tilting the plate the molten wax is caused to run into the trough. Guide strips 56, 57 are located on the plate 55 the corners 59 and 60 of which are turned up and which at the edge opposite the trough 66 is bent to form a small trough 58.
Patent GB-1028209-A (GB)
Title: Improvements in or relating to methods of manufacturing pitch boxes for winding wire
IPC: H01J19/00
Filed: 1963-10-17
Abstract: 1,028,209. Winding electron tube grids. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Oct. 17, 1963 [Oct. 20, 1962], No. 41070/63. Heading B3E. A method of making a pitch box for a device for winding wire in which the pitch of the wire to be wound is determined by means of a rotating box guiding the wire in a helical groove, is characterized in that the groove is cut by means of a sharpened, hard cutter in the material of the box which consists, at least to the depth of cut, of an easily engravable material as compared with the material of the cutter. Grid wire 15 is guided on to a rotating grid frame 3 by a rotating helically grooved guide box 13. The guide box 13 may comprise a metal sleeve coated with a layer of a lacquer, or comprise a sleeve of polymeric methacrylic acid ester material. A helical groove is cut by a sapphire or diamond and may be coated, first with silver and then with chromium.
Patent GB-1293038-A (GB)
Title: Hardening of photographic silver halide materials
IPC: G03C5/26
Filed: 1970-08-26
Abstract: 1293038 Hardening photographic gelatino silver halide materials FUJI PHOTO FILM Co Ltd 26 Aug 1970 [27 Aug 1969] 41128/70 Heading G2C A gelatino silver halide photographic material is hardened by treating said material with pynuric aldehyde prior to or during a photographic development step. The pynuric aldehyde may be in a pre-hardening solution or in a developer. The pre-hardening solution may contain formaldehyde in addition to pynuric aldehyde in which case the hardening effect is increased more than expected from the sum of the effects of each aldehyde. The hardening reaction is rapid and little fog is formed and there is no interaction with colour couplers. In Example 3 the developer contains 6-nitrobenzimidazole.