baber/WOPTO huggingface dataset:
Patent GB-210717-A (GB)
Title: Improvements in or relating to photographic reflex cameras
IPC: G03B19/12
Filed: 1922-11-02
Abstract: 210,717. Houghton-Butcher Manufacturing Co., Ltd., Denniss, A. J., and Dockree, W. Nov. 2, 1922. Cameras, reflex.-In cameras of the hind in which the focusing mirror has to be manually set for focusing and is automatically swung up again to commence the exposure, which is terminated by a capping shutter, mechanism is provided for positioning a large aperture for focusing and for automatically replacing this by the working aperture before actual exposure. The hinged mirror 39, Fig. 1, has a slidable extension 40 to which is attached an upright shield 41, and the end of the extension has corner flanges which slide in vertical guideways 66 in the side walls of the camera. The mirror is brought down to the focusing position by turning a handle 47, which operates a bell-crank lever 43 against tension of a spring 48, and is held therein by a projection 61<b> on a lever 61. The extension 40 engages, in its downward movement, pins 62, 63, Fig. 3, in two vertical slides 51, 50, carrying down these slides against the tension of springs 57, 56 and lowering shutter leaves 53, 52 attached one to each slide, and thus uncovering a large focusing aperture 55. The slide 50 is held in this position by a detent 58 controlled by a spring 59. For instantaneous exposure, the extension 40 is released by pressing a knob 61<a> which withdraws the lever 61, and in its upward travel releases the pin 62 allowing the slide 51 to travel upwards bringing the shutter 53, which carries the working aperture 54, before the aperture. The vertical shield 41 then crosses the aperture commencing exposure, which is terminated by the extension 40 engaging a pin 65 on the detent 58 to release the slide 50 which then moves upwards, bringing the capping shutter 52 in front of the aperture. For a time exposure, a knob 60<a> is pressed, the sequence of operations being the same except that release of the capping shutter 52 is prevented, until the knob 60<a> is released, by an abutment 60b on a lever 60 engaging a projection 52<a> on the shutter 52. The edges of the mirror and extension may have light tight packing. In its upper and lower positions the extension rests against baffles 69, 64. Specification 210,531 is referred to in the Provisional Specification.
Patent GB-631091-A (GB)
Title: Improvements in control gear for induction motors
IPC: H02P1/34
Filed: 1947-12-10
Abstract: 631,091. Controllers for A.C. motors. BRITISH THOMSON - HOUSTON CO., Ltd., and PETCH, T. H. Dec. 10, 1947, No. 32594. [Class 38(iii)] The speed of a 3-phase. slip-ring motor is controlled by varying the secondary circuit resistances consisting of parallel sections R 1 , R 2 , R 3  controlled by double pole contactors, so that the opening of any contactor causes an increase of the resistance in the secondary circuit.. Conversely, closure of the contactors 1, 2 brings the sections R 2 , R, respectively into the circuit and, as these are in parallel with R 1 , the total resistance is reduced. With the contactor 3 closed, all the sections R 1 , R 2 , R 3  are short-circuited.
Patent GB-1387556-A (GB)
Title: Moulding composition for bottle closures
IPC: B65D41/02
Filed: 1973-07-09
Abstract: 1387556 Polyolefin moulding compositions CHEMIE LINZ AG 9 July 1973 [10 July 1972] 32598/73 Heading C3P Moulding compositions for the production of bottle closures comprise (1) 89À0-94À0 weight per cent of polypropylene having a melt index of 0À1-1À0 g./10 mins. and a density of 0À85- 0-95 g./c.c. and (2) 6À0-11À0 weight per cent of high pressure polyethylene having a melt index of 15-25 g./10 mins. and a density of 0À918- 0-920 g./c.c. The compositions may be injection moulded to form closures, e.g. crown closures, which withstand pasteurization.
Patent GB-964994-A (GB)
Title: Improvements in and relating to the making of leather resistant to water penetration
IPC: C14C9/00
Filed: 1961-09-12
Abstract: Leather is water-proofed by treatment with an aqueous emulsion containing 5-65% of an alkenyl succinic acid containing 14 to 22 carbon atoms in the alkenyl chain or a hydrogenation product or a salt or partial salt or an ester or partial ester, the emulsion containing particles of 1-10 microns.  Up to an equal weight of mineral oil based on the succinic acid derivative may also be present.  The leather may have been chrome tanned.  The leather may absorb 4-16% of alkenyl succinic acid.  Specification 694,586 is referred to.
Patent GB-311251-A (GB)
Title: Improvements in the manufacture and production of valuable liquid hydrocarbons
IPC: C10G1/08
Filed: 1927-12-05
Abstract: 311,251. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). Dec. 5, 1927. Benzene; toluene. - m-Cresol is converted principally into benzene and also into toluene by treatment with hydrogen at 200 atmospheres and 450‹ C. in the presence of cobalt oxide which has previously been activated by being heated in the presence of carbon dioxide to 350‹ C.
Patent GB-339433-A (GB)
Title: Improvements relating to trucks for tramway and other rail vehicles
IPC: B61F3/04
Filed: 1929-10-30
Abstract: 339,433. Electro-Mechanical Brake Co., Ltd., and Catlin, L. A. Oct. 30, 1929. Transmission gear between separate axles; gearing with provision for permitting flexure or distortion.-A truck for tramway and other rail vehicles comprises a body-supporting member c with which the electric motor or each motor d is incorporated as a part, a driving connection between the motor and track wheels consisting in part of opposed worms k, the end thrusts of which are mutually counterbalanced, and springs between the frame member c and the track wheels. The side plates of the frame c are connected by cross members g to the motor d, and the frame is supported by springs on the axle-boxes e. A double thrust bearing l is provided for the motor shaft, and the worms k drive worm-wheels n mounted on hollow grills h which loosely surround the axles b and drive them through any suitable universal couplings j, i. Extensions i of the motor form gear-boxes for the worm gearing. The vehicle body may be mounted either directly or by means of springs on the frame c or on a pair of such members. Specification 2470/86 is referred to.
Patent GB-987829-A (GB)
Title: Improvements in or relating to ceramic dielectric materials
IPC: C04B35/468
Filed: 1963-08-21
Abstract: A fired barium titanate dielectric contains 1-8% total of niobium oxide and/or tantalum oxide and lithium oxide and/or iron oxide, wherein the mole ratio of niobium and/or tantalum oxides to iron oxide when present is from 2.5-25 to 1, and to lithium oxide when present is from 1-10 to 1, the dielectric having been fired at a temperature below the volatilization temperature of the constituent oxides.  The titanates, stannates and zirconates of strontium, calcium, lead and magnesium can be substituted, singly or in any combination, for a minor part of the barium titanate. A paraffin wax binder is used when making granules which are then compressed to discs and fired.
Patent GB-1392472-A (GB)
Title: Continuous casting plant
IPC: B22D11/08
Filed: 1972-07-14
Abstract: 1392472 Continuous casting SCHLOEMANN AG 14 July 1972 [17 July 1971] 33179/72 Heading B3F A mould 7 and a number of guide segments 19/20 of an arcuate guide apron are attached to a supporting frame 1 which is disposed at the inside of the arc and supported by basic structure of the plant at two bearing points, viz. at a main bearing 2 (such as a horizontal pin or, as shown, surface resting on a girder 3 to which the frame 1 is attached by a screw 4) vertically aligned with the centre of gravity of the assembly, and at a loose bearing 5 affording the assembly freedom of movement parallel with the longitudinal axis of the guide path 52 of the apron; the segments 19/20 are movable out of alignment with the apron in a direction away from the frame and a straightening and withdrawing machine 60 follows the apron. Each guide segment comprises an inner part 19 and an outer part 20 both slidable on columns 18 for relative adjustment by a cylinder 24 attached to the frame 1 and for transfer by the cylinder 24, when a stop 22 is removed, to a segment-changing carriage 27 which may serve a number of aprons of a multistrand installation. For insertion or removal of a dummy bar 36 into or from the casting machine, the outer part 20 of at least one guide segment is separately displaceable, to a position 35, by cylinders 30, 31 so that a magazine 40 for the bar 36, and contained in a casing 37, can be introduced into the opening so created. The mould 7 is suspended in a cradle having sideplates 8 attached to the frame 7 by links 9 and levers 10, each of the latter being oscillated by a cylinder 12. Suspended from a bracket 14 on the frame 1 the sideplates 8 is an initial guiding and cooling section 13. It has rollers 15 held between guide rails 16 on the inside of the sideplates 8.
Patent GB-1454958-A (GB)
Title: Power transmission belt
IPC: F16G5/14
Filed: 1974-07-26
Abstract: 1454958 Belt gearing GOODYEAR TIRE & RUBBER CO 26 July 1974 33218/74 Heading F2Q In a power transmission belt comprising a body 13 of generally trapezoidal cross-section having a tension section 16, a compression section 17, and a neutral axis section 18 containing stress-resisting members 20, transverse grooves 19 are formed in the tension section 16, the bottoms of the grooves 19 being spaced from the members 20, and the members 20 are located at a distance X from one surface 14 of the belt which is greater than a distance Y from another surface 15 of the belt. Transverse notches 24<SP>1</SP>, Fig. 5, may also be provided in the compression section of the belt. An envelope 26 of rubber impregnated textile fabric may be provided.
Patent GB-1510259-A (GB)
Title: Pressure-sensitive copying or recording material
IPC: C09B55/00
Filed: 1976-08-10
Abstract: 1510259 Pressure-sensitive recording sheets CIBA-GEIGY AG 10 Aug 1976 [12 Aug 1975] 33274/76 Heading D2B Pressure-sensitive recording sheets contain, as a colour former, at least one azomethine compound of the formula: in which R 1 , R 2 , R 3  and R 4  each denote a hydrogen atom, C 1-4  alkyl, C 2-5  cyanoalkyl; benzyl or phenyl, each optionally substituted by halogen, C 1-4  alkyl or C 1-4  alkoxy, or R 1  and R 2  conjointly denote C 4-5  alkylene and/or R 3  and R 4  conjointly denote C 4-5  alkylene, X 1  and X 2  each denote a hydrogen atom, halogen, C 1-4  alkyl, or C 1-4  alkoxy, A denotes naphthylene or phenylene, which can be further substituted by halogen, C 1-5  alkyl, C 1-4  alkoxy, phenoxy, halogenophenoxy or C 1-9  acylamino, and n denotes 1 or 2. The azomethine colour former may be used in admixture with known colour formers e.g. crystal violet lactone, benzoyl leucomethylene, blue, 2, 6-diamino fluoranes, substituted 3, 3-bis-indolyl phthalides, 3, 3-(bis-amino phenyl) phthalides, and substituted 3-phenyl-3-indolyl phthalides. The colour former(s) may be enclosed in microcapsules or incorporated in foam-like structures. The microcapsules may be applied to the back of a transfer sheet facing an electron acceptor on the front of a receiving sheet. Alternatively, both the microcapsules and electron acceptor may be located in or on the same sheet. The paper may be made at least in part from fibres of synthetic polymers.
Patent GB-1014347-A (GB)
Title: Process for the multicolour dyeing of wool
IPC: D06P3/82
Filed: 1963-08-22
Abstract: Multicolour dyeings are obtained on woollen yarn in a single dyebath by dyeing a mixture of normal wool and wool pretreated with aqueous alkali, under conditions whereby the fibres are substantially undamaged, with an aqueous dyebath containing an acid dyestuff which has at least two -SO3H groups and an amount greater than 0.5% on the weight of wool of a water-soluble condensation product of an aryl sulphonic acid and an "aldone" at an initial dyebath pH of less than 5 in the presence of the wool.  An "aldone" is an aldehydic or ketonic carbonyl compound, e.g., formaldehyde, acetaldehyde, benzaldehyde, benzoin and acetone.  The alkali pretreatment may be carried out with an aqueous solution of a base at pH 10.5-11.5 and at 120-150 DEG F. and it may also contain a reducing agent, e.g. NaS or NaHSO3. The alkali treatment may be carried out when the wool is in stock or top form prior to spinning and/or combining with the normal wool.  Alternatively normal wool in a yarn or piece, e.g. a carpet, may be treated discontinuously with an alkaline paste. The acid dyes may further contain reactive groups.  A number of suitable condensation products are mentioned, those in the examples being condensates of naphthalene sulphonic acid and formaldehyde.  The dyebath may contain known additives and also a dyestuff containing a total of less than 2 -SO3H and reactive groups in an amount which is readily absorbed by the normal wool portion.  Example of dyeing yarn, knitted fabrics and carpets are given.
Patent GB-530237-A (GB)
Title: Improvements in and relating to methods and apparatus for testing flour
IPC: G01N21/25
Filed: 1938-11-16
Abstract: 530,237. Photo-electric apparatus for testing flour. BAUER, E., and GES. FUR NEUZEITLICHE BODENBEHANDLUNG. Nov. 16, 1938, Nos. 33326 and 33327. Convention dates, Nov. 6, 1937, and Sept. 24, 1938. [Class 40 (iii)] [Also in Group I] An apparatus for testing flour photo-electrically comprises a source of light 2, Fig. 1, a lightsensitive cell 6, a measuring instrument 10 connected to the cell, and interposed between the light source and the cell a device 3 adapted to contain a layer of dry flour of predetermined weight, volume and height. When the device 3 filled with flour is inserted between the lamp 2 and the cell 6, an E.M.F. is generated and is measured by the instrument 10. The reading increases while the heat from the lamp dries the flour and then remains constant at a value depending on the shade of the flour. This is a function of the ash content of the flour, and the instrument may be graduated to indicate this ash content. A convenient holder for the flour comprises short outer and inner tubes 23, 21, Fig. 4, with transverse glass discs 24, 22, between which the flour is compressed by a screw wise motion between the two tubes which are interconnected by pins 26 and oblique slots 28. The disc 24 is detachably secured by bayonet joints 32 and is removed to enable the addition or removal of flour to obtain the correct weight. A scraper 16, Fig. 5, is provided to make the surface of the flour smooth before the disc 24 is replaced.
Patent GB-172958-A (GB)
Title: Process and apparatus for the manufacture of pure nitrogencarbonic acid mixture fromcombustion gases
IPC: C01B21/02
Filed: 1921-12-13
Abstract: 172,958. Scheib, G., and Koch, M. Dec. 14, 1920, [Convention date]. Nitrogen.-In the continuous production of a mixture of nitrogen and carbon dioxide by passing combustion gases over a metal and its oxide, the composition of the catalyst is maintained by reducing a portion of the combustion gases before they pass into the contact chamber. In the anangement shown gas enters the combustion chamber 9 through the pipe 2 and tubes 7, and air under pressure is supplied through the aperture 3 and pipes 8 surrounding the gas tubes. The condition of the flame, observed through the spy-hole 39, indicates when adjustment of the gas supplies is necessary. An igniter 41 supplied independently with gas and air is also fitted. When a flap 12 is open some of the gaseous products pass into conduit 11, and after being reduced by the charcoal fed on to the grating 13 from the container 15, join the main gas stream leading to the column 20. The charcoal becomes heated and reacts with the water vapour present to give hydrogen and carbon monoxide, and with the carbonic acid to give carbon monoxide. The contact material may consist of sheet-copper spirals 23 packed in the frame 21 suspended from the cover 24 which acts as an explosion cap, being pressed against its seating by the spring 27 and cross-head 29. The combustion chamber is fitted with a similar explosion cap 32. As an increase in the supply of oxygen produces an approximately proportionate increase in the production of reducing gases, continual adjustment of the flap 12 is generally not necessary. To counteract extensive irregularities, the flap may be operated by an electrical device controlled by a continuously operating gas-analyzer, samples of gas being taken from different points in the apparatus. Instead of gas firing, the process may be carried out with any firing installations and the combustion gases may be reduced by any other substance such as benzol, petroleum, or oxalic acid instead of charcoal.
Patent GB-1361605-A (GB)
Title: Apparatus fr advancing rail vehicles through a loading or  unloading installation
IPC: B61K7/00
Filed: 1971-09-21
Abstract: 1361605 Track propulsion systems W LAWRENCE & SON (LONDON) Ltd 21 Sept 1971 [9 July 1970] 33463/70 Heading B7L A wagon controller, particularly for use in a loading or unloading installation, comprises wheels 16, 17 mounted on supports 10 for disposal at opposite sides of rails for the wagons, resilient means such as hydraulic rams 30 urging the wheels inwardly for rolling engagement with the sides of a wagon, drive means such as hydraulic motors 22 for rotating the wheels to propel a wagon, and flow resistance means including a respective adjustable flow regulating valve 60 in the exhaust line of each motor 22. Each valve 60 limits flow and thus causes a pressure build-up downstream of the associated motor 22 when its wheels 16, 17 rotate above a predetermined speed. This downstream pressure becomes greater than that upstream of the motor and thus exerts a braking torque on the motor. A high resistance by-pass line 61, 67 through a relief valve 68 permits exhaust of liquid when the downstream pressure build-up exceeds a chosen value. There may also be provided additional brake means such as hydraulically actuated brake units 27 for applying a braking torque to the wheels to arrest a wagon. Each support or stanchion 10 has a separate hydraulic circuit including a hydro-pneumatic accumulator 76 for supplying liquid to the hydraulic motors 22, rams 30 and brake units 27 on the stanchion 10, the circuit being pressurized by a pump 41 driven by an electric motor 26 on the stanchion. A pair of swing arms 11, 12 movable about a vertical axis are mounted on each stanchion 10, and each arm carries a rotatably mounted axle shaft 15 which in turn carries two wheels 16, 17. Each axle shaft 15 is driven via a flexible coupling 20 by one of the hydraulic motors 22 and carries a brake disc 28 which may be acted on by the respective brake unit 27.
Patent GB-283543-A (GB)
Title: Improvements in electrical condensers
IPC: H01G4/22
Filed: 1927-12-13
Abstract: 283,543. Dubilier Condenser Co. (1925), Ltd., (Assignees of Weiss, A. J.). Jan. 13, 1927, [Convention date]. Condensers have a dielectric of fibrous material which is treated with two or more insulating materials having different physical properties. The condenser 1 is made by winding metal foil and strips of paper 2 and is impregnated in melted paraffin wax, under pressure if desired. During cooling the wax contracts as shown in the diagonal shading 3 having spaces at the ends where voids occur. To prevent this, the condenser is placed. while still hot, in a. tank containing, for instance, cold petrolatum, the tank being pumped for half-an-hour to remove air. Air under pressure is then admitted so that as the wax contracts the petrolatum soaks in and fills the voids as indicated by the vertical shading 4. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the use of a liquid or semi-liquid as the second impregnating material. This subject-matter does not appear in the Specification as accepted.
Patent GB-411151-A (GB)
Title: Improvements in and relating to reciprocating ram pumps
IPC: F04B53/10
Filed: 1932-11-29
Abstract: 411,151. Reciprocating pumps. TOWLER, F. H., and TOWLER, J. M., Oaklands Engineering Works, Rodley, near Leeds. Nov. 29, 1932, No. 33806. [Class 102 (i).] In a multiple-cylinder pump through bores are made in a cylinder block a and cylinder liners c are inserted from the lower ends and suction valve seatings e from the upper ends, the carriers g of the suction valves h being clamped between the liners and the seatings. This arrangement permits the insertion of liners c of different bores in a standard cylinder block. Spacing washers g<2> may be inserted between the liners and the valve carriers and between the latter and the valve seatings. In order to obtain an unobstructed suction flow the passages f through the seatings e are of Venturi form and the valve seating surface bisects the angle between the conical valve head and the adjacent surface of the passage f. Specification 392,992 is referred to.
Patent GB-757869-A (GB)
Title: Process for dyeing textile materials and foils composed of polyesters of aromatic dicarboxylic acids
IPC: D06P1/651
Filed: 1954-11-22
Abstract: Synthetic linear aromatic polyester, e.g. polyethylene terephalate, textiles and foils are dyed by the dispersion method employing as the dyestuffs an anthraquinone compound which contains a sulphur-containing substituent not imparting solubility in water. The substituent may be an alkylmercapto, a cycloalkyl-mercapto, a sulphonic acid amide, a sulphonic acid alkyl or aryl ester or an alkyl sulphone group.  The compound may also contain at least one basic nitrogen-containing substituent group such as an amino group. Dyeing may be effected at raised temperatures and under pressure. The dyestuff is pasted with a dispersing agent such as sulphite cellulose waste liquor, tetrahydrofurane or tetrahydrofurfuryl alcohol, if desired together with a condensation product of a higher alcohol with ethylene oxide, a soap or sodium m  - heptadecyl - N - benzyl - benzimidazole disulphonate.  The dyestuff may also be pretreated with a water-soluble organic solvent.  A swelling agent, e.g. phenyl-methyl-carbinol, benzoic acid, o - phenyl - phenol or chlorobenzene, may be added to the dyebath.  In examples, specified dyestuffs are 1 - aminoanthraquinone - 6 - ethyl sulphone, 1 - methyl - mercapto - anthraquinone, 1 - amino - anthraquinone - 6 - sulphonic acid - dimethylamide and 1 - aminoanthraquinone - 6 - sulphonic acid phenyl ester.
Patent GB-428948-A (GB)
Title: Improvements in or relating to animal traps
IPC: A01M23/04
Filed: 1933-12-02
Abstract: 428,948. Animal traps. BLATCHFORD, J., Creedy Barton, Shobrooke, Devon. Dec. 2, 1933, No. 33867. [Class 5 (i)] An animal trap comprises a light wire netting enclosure A fitted with a balanced receptacle B containing liquid or shot and mounted on a pivot C. The animal entering by the opening F treads on a pivoted plate H and through a spring connection E causes the receptacle B to overbalance thus closing the entrance opening. A spring catch G locks the receptacle in the closing position.