baber/WOPTO huggingface dataset:
Patent GB-1171964-A (GB)
Title: Improvements in or relating to Methods of Producing Isoamylase by Fermentation
IPC: C12N9/44
Filed: 1967-09-05
Abstract: 1,171,964. Isoamylase. HAYASHIBARA CO. Ltd. 5 Sept., 1967 [22 Sept., 1966], No. 40605/67. Heading C3H. Isoamylase is produced by cultivation of Escherichia intermedia in a nutrient medium. It may be salted out with ammonium sulphate and purified with calcium phosphate gel and DEAE-cellulose.
Patent GB-1145646-A (GB)
Title: Novel pregnane derivatives
IPC: C07J9/00
Filed: 1966-08-12
Abstract: 1,145,646. Pregnane derivatives. F. HOFFMANN-LA ROCHE & CO. A.G. 12 Aug., 1966 [8 Oct., 1965], No. 40675/68. Divided out of 1,145,641. Heading C2U. Novel 2#,3#,5α,6# - tetraacetoxy - pregnane 20-carboxylic acid methyl ester is prepared by reacting 2α - bromo - 3#,5α,6# - triacetoxypregnane 20-carboxylic acid methyl ester with silver acetate. Novel 2#,3#,6# - trihydroxy - 5α - acetoxypregnane 20 - carboxylic acid methyl ester is prepared by reacting the above 2#,3#,5α,6#- tetraacetoxy pregnane derivative with methanolic potassium hydroxide and then with diazomethane. Novel 2#,3# isopropylidenedioxy - 5α- acetoxy - 6# - hydroxy - pregnane - 20 - carboxylic acid methyl ester is prepared by reacting above 2#,3#,6# - trihydroxy - 5α - acetoxy pregnane derivative with acetone in the presence of boron trifluoride etherate. Novel 2#,3# - isopropylidenedioxy, 5α,6#- dihydroxy pregnane 20-carboxylic acid methyl ester is prepared by heating above 2#,3# isopropylidenedioxy pregnane derivative with potassium hydroxide and the carboxylic acid obtained reacted with diazomethane.
Patent GB-1069539-A (GB)
Title: A high fidelity stereophonic system
IPC: H04R1/02
Filed: 1964-10-07
Abstract: 1,069,539. Stereophonic systems; loudspeaker enclosures. CLAIRTONE SOUND CORPORATION Ltd. Oct. 7, 1964 [July 23, 1964], No. 40833/64. Headings H4J and H4R. In a stereophonic system a horizontal boom 24 (Fig. 1) carries at its centre a turntable enclosure 12 and at its ends loudspeaker enclosures 14. The arrangement substantially prevents vibration feedback from the loudspeaker enclosures 14 to the turntable enclosure 12. The loudspeaker enclosures 14 are mounted to permit adjustment of the direction of sound radiation and to this end are each secured to a rotatable bearing member (80<SP>1</SP>), Fig. 10 (not shown). The boom 24 is mounted on an upstanding column 16 which is hollow, having opposite vertical slots (22), Figs. 4, 6, 7 (not shown), in which the boom 24 fits. A cylindrical collar (26) is slidably disposed in the end opening of the column 16 and seats against the boom 24. Spaced notches (32) on the boom 24 engage with the bottom edges (34) of the slots (22) for seating the boom 24 on the column 16. The collar (26) has welded thereto a mounting plate (28) for the turntable enclosure 12. The enclosure 12 is also supported by a pair of brackets 50 bolted to its underside. The weight of the turntable enclosure 12 holds the boom 24 in position. Wiring from the enclosure 12 passes through aligned apertures (56 etc.) in the boom 24 and mounting plate (28) to a channel (58) in the underside of the boom 24 and is then directed to each of the enclosures 14. Loudspeaker enclosures.-Each loudspeaker enclosure includes a bottom shell half (96<SP>1</SP>), Fig. 10 (not shown), having a circular lip (138) which accommodates a conical speaker baffle (104<SP>1</SP>) in a sliding force fit. Two perforated top shell halves (144, 146) having their perforations out of alignment complete the shell. Alternatively, there may be only one upper perforated shell half (122) secured by a connecting ring to the bottom shell half (96), (Fig. 8, not shown). The conical loudspeaker baffle is then secured through a cushion gasket to a further mounting ring on the bottom shell half. Preferably the interior is provided with a relatively hard acoustical material (148) backed with a lining of softer-acoustical material (150). Rotation of each enclosure may be restricted to just under one 360-degree traverse by a stop pin (128), Fig. 13 (not shown).
Patent GB-1161267-A (GB)
Title: Improvements in Dental Handpieces
Inventor: LOGE HANS
IPC: A61C1/10
Filed: 1967-09-07
Abstract: 1,161,267. Dental handpieces. KALTENBACH & VOIGT. 7 Sept., 1967 [8 Sept., 1966], No. 40891/67. Heading A5R. A dental handpiece comprises (i) a device for holding a dental tool (e.g. a drill), the device being situated in the forward region of the handpiece and being arranged to be axially displaceable in opposition to the pressure of a spring to release the tool, (ii) an outer sleeve extending rearwardly of the holding device and being provided, adjacent the rearward end of the holding device, with an aperture and (iii) a release device in the form of a lever adapted to engage the holding device to effect said axial displacement of the gripping means, the lever being freely insertable in and removable from the aperture, and an edge of the aperture providing a bearing abutment for the lever when the lever applies a force in opposition to the spring force. As illustrated, the handpiece comprises an outer sleeve 1 which forms a handgrip and within which is rotatably mounted a driving shaft 2 adapted to be connected to a dental motor. Fixed in the driving shaft is a gripping sleeve 4 for a dental drilling tool 5, the gripping sleeve forming part of a holding device 3 the rear end 3a of which comprises a pressure ring 6 surrounding the driving shaft and connected to the gripping sleeve by a pin 7 which is guided in slots 8 formed longitudinally in the driving shaft. Surrounding the driving shaft is a coil spring 9 which bears at one end against a collar 10 integral with the driving shaft and at the other end against the pressure ring thereby to bias the gripping sleeve so that conical jaws 4a on the gripping sleeve are compressed by the conical end portion of a sleeve 11 fixed to the front end 2a of a driving shaft. Connected to the outer sleeve of the handpiece by screw 13 is an insert plate 14 having an aperture 12 through which may be inserted a releasing tool 16 in the form of an angled lever the shorter arm of which is adapted to contact the pressure ring to effect axial displacement of the gripping sleeve relative to the driving shaft thereby to release the dental tool. In the region of the aperture, the insert plate has a recess 15 of reduced wall thicknesses to provide hearing edges about which the releasing tool may pivot.
Patent GB-1481543-A (GB)
Title: Electrodes
IPC: H01M4/24
Filed: 1974-09-20
Abstract: 1481543 Ni-Cd secondary cells GENERAL ELECTRIC CO 20 Sept 1974 [17 June 1974] 41083/74 Heading H1B To reduce fading in a nickel-cadmium cell with KOH electrolyte, the cathode comprises a compressed mixture of up to 34% spherical cadmium metal particles of 3-12 microns size stabilized with 1% CdO, 0À1 to 5% nickel hydroxide powder, 60 to 98% cadmium compound powder CdO, Cd(OH) 2  or a mixture thereof, and an unsintered fluorocarbon binder, supported on a nickel screen substrate. Preferably the mixture contains 15% Cd metal particles. The electrodes may be flat or coiled with separators.
Patent GB-1286132-A (GB)
Title: Method of finishing multi-filament plastics strands
IPC: D02J1/22
Filed: 1969-08-19
Abstract: 1286132 Finishing plastics strands SUTURES Inc 19 Aug 1969 [28 May 1969] 41258/ 69 Headings D1F and D1T A plastics, e.g. polyethylene terephthalate, strand, i.e. a unitary structure of monofilaments or multifilaments which have been twisted, braided, entangled or spun into yarn, thread, suture or string forms, is finished (after hot-stretching and cooling by subjection to repeated flexion, as by one or more passages under tension over a series of sharp (but not cutting) edges, which may be provided by guide pins, positioned to effect at least a 30‹ change in direction of the passing strand, in order to cause relative movement between adjacent filaments of the strand and thereby enhance the softness and pliability thereof. A lubricant, e.g. polytetrafluoroethylene or a silicone wax may be applied to the strand surface and within the interstices thereof after such flexion.
Patent GB-1183706-A (GB)
Title: Improvements in or relating to Vehicle Brake Systems.
Inventor: SHARP DENIS
IPC: B60T8/34
Filed: 1966-09-19
Abstract: 1,183,706. Vehicle braking systems. MULLARD Ltd. 24 July, 1967 [19 Sept., 1966], No. 41639/66. Heading F2F. The anti-lock braking system of Specification 1,101,078 is modified by arranging for the control piston to be actuated by an anti-lock control force in a direction away from the master cylinder so as to displace away from the master cylinder fluid lying adjacent to the master cylinder side of the piston, and also by a balancing force through a non-linear mechanical device, such piston acting on a valve in the line from the master cylinder to the brake to shut off the latter from the master cylinder. The balancing force may be provided by a piston operated by the master cylinder pressure as in Specification 1,101,078 (Fig. 1, not shown) or may be a spring (Figs. 2-4, not shown) so as to be independent of movement of the brake pedal. The non-linear mechanical device is an arm acted on by the two forces at 90 degrees to one another, these being applied at opposite ends (Figs. 2-4, not shown) or at the same end (Fig. 5). In Fig. 5, a valve V between the master cylinder MC and the brakes W is controlled by a piston B1 which is in turn controlled by a further rod C via a spring S2. The rod C is urged to the left by a spring S1 acting via piston B1 and link FB, and to the right by a solenoid energized from a deceleration sensor. With no force exerted by the solenoid the valve is held open, but when skidding occurs the rod C is retracted beyond the end of the spring S2 which thus (in conjunction with spring S3) provides a level for the pressure limiting. Alternatively (Fig. 7) the rod can be in engagement with the spring all the time, a fixed stop being provided to limit its excursion to the left. The spring S2 also aids the solenoid to exceed the peak value of the activating force required to initiate operation.
Patent GB-1032916-A (GB)
Title: Improvements in or relating to sheet plastics forming machines and methods
Inventor: SMITH ALEXANDER FALCONER
IPC: B29C51/04
Filed: 1963-10-22
Abstract: 1,032,916. Crates. GENERAL CELLULOID CO. Ltd. Jan. 21, 1965 [Oct. 22, 1963; Feb. 13, 1964], Nos. 41690/63 and 6117/64. Heading B8P. [Also in Division B5] A bottle crate, drawn from a sheet of heated thermoplastic material, comprises outer walls 78, 79 having bottle receiving corrugations, and inner dividing walls having projections 82 separated by wall ports 83. Bottle receiving recesses 84 are formed between projections 82 (see Fig. 6, not shown).
Patent GB-1433905-A (GB)
Title: Fume remover
IPC: B08B15/04
Filed: 1973-09-05
Abstract: 1433905 Welding by fusion BOC INTERNATIONAL Ltd 5 Sept 1974 [5 Sept 1973] 41746/73 Heading B3R [Also in Division F4] A fume extractor for a welding torch, e.g. of the MIG type, comprises a generally cylindrical housing 2 having a tapering end section 6 formed with two axially spaced apart circular series of apertures 10, a suction duct 4, and an inner member 14 which together with the end section 6 defines a tapering annular space communicating with the suction duct 4. As shown, the inner member 14 is in the form of a cylindrical sleeve fitting over the outside of the welding head 22. The upper section 16 of housing 2 and the sleeve 14 are slotted at 24 and 26 respectively to enable a hose clip 18 to securely clamp the extractor on to the welding head 22. The lower series of apertures 10 are slot-shaped instead of circular. In a modified embodiment (Fig. 1, not shown) the inner member is in the form of a nozzle (8) which, in use, is fitted on to the end of the torch, the remainder of the head of the torch being housed within the upper end of the housing (2); the head is sealed to the inner surface of housing (2), e.g. by means of an 0-ring. A deflector baffle (not shown) may be fitted around the end of the fume extractor to reduce the fume and gas intake of the lower series of apertures 10.
Patent GB-1450579-A (GB)
Title: Fuel supply systems for internal combustion engines
IPC: F02M69/38
Filed: 1973-09-06
Abstract: 1450579 Regulating IC engine fuel injection ROBERT BOSCH GmbH 6 Sept 1973 [7 Sept 1972]  41951/73 Heading F1B [Also in Division F2] The pressure of a fluid, e.g. fuel, providing the restoring force against displacement of an air-flow measuring element 4, which moves the slide valve 12 of a fuel distributer 8 through a lever 10, is controlled by a valve 53 having a control spring 59. The force of the spring 59 is acted against by a bimetallic spring 64 connected to a heat-conducting curved piece of metal 68 which is to be heated by an electric heating element 69 when the engine is started. The diaphragm valve 58 controls the pressure acting on the end-face 13 of the valve 12 and during warming up of the spring 64 the spring acts to reduce the force of the spring 59 acting through the pin 60 on the diaphragm valve such that the richness of the mixture supplied to the engine is appropriate. A heat insulating bush 66 connects the spring 64 and piece of metal 68 to the locating pin 65. A resistor 74 is included in the circuit of the heater 69 below a certain ambient temperature at which the bi-metallic strip 73 connects the heater direct to the earth connection 76. The pressure acting on the end-face 13 is further controlled by a valve 32 having a valve diaphragm 33 loaded by a spring force which is adjustable by a cam 38. The cam 38 is rotated with the throttle valve 7 and moved axially by a diaphragm 41 loaded by a spring 44 and subject to the pressure downstream of the throttle valve. The valve 12 controls metering slits 24 connected by conduits 25 to intake manifold fuel injectors and fuel is supplied to the distributer 8 by an electricallydriven fuel pump 16. Reference has been directed by the Comptroller to Specification 1336606.
Patent GB-1060044-A (GB)
Title: Improvements in and relating to methods of preparing a porous surface for finishing
IPC: B24B1/00
Filed: 1963-10-24
Abstract: In "Methods I and II," following Example 5, there is described the so-called "polymerization" in aqueous emulsion of a mixture of commercially available alkyd and urea-formaldehyde resins to yield an insoluble grainy substance. In Example 5 this product and burnt umber are mixed with a solution of an alkyd and an urea-formaldehyde resin in a mixture of xylol and butanol.
Patent GB-968614-A (GB)
Title: Improvements in or relating to patches for repairing rubber articles
IPC: B29C73/10
Filed: 1961-11-24
Abstract: 968,614. Tyre repair patches. PIRELLI S.p.A. Nov. 24, 1961 [Nov. 26, 1960 (2); July 19, 1961], No. 42115/61. Heading B7C. [Also in Division B5] A repair patch 1 for repairing tyres, tubes or other rubber articles comprises a body layer 2 of vulcanized rubber and a co-extensive adhesive layer 3 of unvulcanized, vulcanizable rubber, and has a marginal portion 5 separated from the remaining central portion 4, which is of thicker section, by a V-sectioned groove 6 of closed outline, the groove 6 being disposed at a constant distance from the edge 9 of the patch and being connected thereto by spaced grooves 10, 11 radiating from the groove 6. The patch may be of diamond shape, as shown, or of elliptical shape, and the marginal portion 5 may be chamfered at the patch edge 9.
Patent GB-1183716-A (GB)
Title: Method of Tapping Copper in the Continuous Smelting and Converting Process.
Inventor: THEMELIS NICKOLAS JOHN
IPC: F27D3/00
Filed: 1966-04-28
Abstract: 1,183,716. Matte process for producing copper. NORANDA MINES Ltd. April 14, 1967 [April 28, 1966], No. 42267/69. Heading C7D. [Also in Division F4] In a continuous process for smelting and converting copper concentrates in the presence of a flux by gradual oxidation of the copper matte to produce metallic copper, the outflow of the molten product is controlled by adjusting the temperature of the copper in the tapping port so as to maintain it liquid for tapping and solid when tapping is to be stopped. A "tapping furnace" comprises a refractory lined chamber, which is brought into line with the tapping port, and contains a burner (preferably supplied with a burner flame which spirals round the chamber wall) and has an outlet for the molten copper. The floor of the tapping furnace preferably slopes downwards to facilitate the flow of molten copper. When it is desired to stop tapping the burner in the taphole furnace is turned down and a clay or metal plug inserted until the melt freezes in the taphole.
Patent GB-1446171-A (GB)
Title: Rack-and -pinion steering gear box incorporating a damper for motor vehicles
IPC: B62D7/22
Filed: 1973-09-07
Abstract: 1446171 Toothed gearing; hydraulic dampers ALFA ROMEO SpA 7 Sept 1973 [8 Sept 1972] 42295/73 Headings F2S and F2Q A rack and pinion steering gear comprises a fixed tubular body 20 containing a toothed rack 14, a pinion 10 and an hydraulic damper formed by a cylinder 15 welded to one end of the rack and containing a piston 42 attached to a rod 43 whose end is secured to the body 20 by means of a pin 47 which extends through a slot 48 in the wall of the cylinder 15 located between the rack 14 and a chamber 44 containing the piston 42. Leakage of fluid past the piston 42 is permitted, and a chamber 45 at the end of the cylinder 15 is connected to a compensation chamber 50 through a valve 51.
Patent GB-1037629-A (GB)
Title: Apparatus for handling and guiding a moving continuous elongated structure
Inventor: WINTERBOTTOM MARTIN RICHARD
IPC: B65H57/24
Filed: 1963-10-30
Abstract: Apparatus for handling moving continuous elongated materials, e.g. threads and ribbons, includes a surface for contacting the running material comprising a metal having a surface with smoothly rounded nodules with substantially no peaks, the roughness of the surface being of the order of 20-200 micro-inches.  The surface may of a roller, a snubbing-pin which may be heated or a guide, and may be formed on a core of steel, copper or brass by elastoplating to a thickness of .0005-.050 inches after roughening by vapour-blasting.
Patent GB-1042618-A (GB)
Title: Metallised fabrics
Inventor: PARISH GEOFFREY JAMES
IPC: D06Q1/04
Filed: 1963-10-31
Abstract: 1,042,618. Making metal fabrics. COTTON SILK & MAN-MADE FIBRES RESEARCH ASSOCIATION. Dec. 8, 1964 [Oct. 31, 1963], No. 42955/63. Headings B3A and B3V. [Also in Division B5] A method of making non-porous metallized fabric 10, Fig. 1 (not shown), comprises pressing a sheet of metal 13 against a porous fabric 12 by a roll 16, Fig. 2 (not shown), with a rubber tyre 17, to cause the sheet to conform to the surface of the fabric and to rupture, the ruptured parts extending into the interstices of the fabric, and the sheet adhering to the fabric by means of a continuous flexible film of adhesive 14 which does not rupture with the sheet. The woven, knitted or netted fabric 10 may bemade of cotton, glass, synthetic yarn or copper gauze and the sheet 13 of aluminium, gold, silver, tin or copper. The adhesive may be applied to the metal (Fig. 2) or to the fabric. Specification 856,341 is referred to.
Patent GB-1277243-A (GB)
Title: Apparatus for use in activated sludge treatment of industrial waste
Inventor: KUROSAWA KEIJI
IPC: C02F3/24
Filed: 1969-08-28
Abstract: 1277243 Aerating and agitating liquids MITSUBISHI KAKOKI KAISHA Ltd 28 Aug 1969 [18 Dec 1968] 42985/69 Heading B1C [Also in Division C1] Means for blowing air or oxygen into waste being treated by the activated sludge process (see Division C1) may comprise a circular tube 7, Fig. 3B, which is raised or lowered by a cable 9, fitted with an air or oxygen supply pipe 6 and nozzles 8, and has pivotally mounted feet 11 with wheels 10. In similar means, Fig. 5A, a cover 31 fixed to the circular pipe 7 has mounted thereon an electric motor 29 which has a detachable agitator 28 which may be directed upwardly or downwardly. The means may also comprise a straight pipe 7', Fig. 4B, with two pairs of pivotally mounted feet 11, 11', the feet of one pair being longer than those of the other.
Patent GB-1064698-A (GB)
Title: Method for producing textured yarns of cellulosic fibers
IPC: D02G1/02
Filed: 1964-10-21
Abstract: Stretch, bulk, crimped, lively and fluffed cellulosic yarns are produced by impregnating a cellulosic yarn, e.g. cotton, linen or viscose rayon, with a mixture of monohydroxy oxyethylene 1,2-oxypropylene aliphatic monoethers and with a catalyzed heat-reactive cross-linking agent capable of reacting with the cellulosic hydroxyl groups, mechnically positioning the impregnated yarn in a predetermined configuration and heating to effect reaction between the cross-linking agent and cellulosic hydroxyl groups to set the fibres of the yarn permanently in this configuration so that they have an inherent tendency to assume this configuration.  The yarn may be mechanically positioned in the desired configuration by means of a false twist spindle.  The mixture of monoethers which may be applied to the yarns in admixture with the cross-linking agent or separately preferably in the form of an aqueous solution comprises ethylene oxide and 1,2-propylene oxide combined as oxyethylene and 1,2-oxypropylene groups preferably in a ratio at least one third part of 1,2-propylene oxide for each part of ethylene oxide by weight and the aliphatic alcohol used in preparing the monoether may contain 1-14 carbon atoms.  The mixture of monoethers preferably has a molecular weight of 500-3000.  The cross-linking agent may be dimethylol ethylene urea, dimethylol dihydroxy ethylene urea, dimethylol N-ethyl triazone, tris-methoxymethyl melamine, diacetoxymethyl ethylene thiourea, vinyl cyclohexene dioxide, glyoxal, glutaraldehyde, butanol hemiformal, disodium sulphatoethyl sulphone, bis-b -hydroxyethyl sulphone, methylene bis acrylamide, the diketene of glutaric acid, the bis pyridinium salt of chloromethylated glycols, tris aziidinyl phosphine oxide, tetramethylol acetylene diurein, bis hydroxyethylene urea, glycerin dichlorohydrin, dimethylol urea, diglycidyl ether of glycerol, dimethylol alkyl hydrazines, dimethylol alkyl carbamates, bis methoxymethyl uron, dimethylol oxamide, dimethylolparacresol, dimethylol acetone and formaldehyde glycol formals and mixtures thereof.  Suitable catalysts are ammonium chloride, magnesium chloride, oxalic acid, zinc nitrate, amine hydrochlorides, zinc fluoroborate, zinc acetate, sodium or potassium hydroxide and triethanol amine.
Patent GB-430731-A (GB)
Abstract: 430,731. K n i t t i n g - needles. CROWTHER, O. G., 21, Clyde Street, Glen Iris, Melbourne, Australia. Sept. 18, 1933, No. 25809. Void [Abridged as open to inspection under Sect. 91 of the Acts, March 28, 1934]. [Class 74 (ii)] In a knitting-needle of celluloid, phenolformaldehyde condensation product, &c., the stem bears a linear scale formed by embossing, engraving, or the like, with or without the appropriate figures. The markings may extend partially, or completely, around the stem, may count from either end, and may be inked or colour tinted.