baber/WOPTO huggingface dataset:
Patent GB-446841-A (GB)
Title: Improvements in or relating to suction cleaners
IPC: A47L9/04
Filed: 1934-12-04
Abstract: 446,841. Suction cleaners. HURLEY, M. S., Coity, Widney Lane, Solihull, Warwickshire. Dec. 4, 1934, Nos. 34761 /34 and 6451/35. [Class 8 (i)] The suction nozzle of a vacuum cleaner is divided into compartments which are alternatively or successively put into communication with and cut off from the suction by means of a rotary or reciprocating valve or valves which are in motion when the cleaner is in operation and the alternation of suction may be employed to operate one or more vertical moving beater members. The nozzle 2 is divided into two parts by a device member 5 having upper inclined surfaces 11, 12, the member 7 formed thereby being coupled to the suction pipe. Pivoted at 15 above this triangular member are arms 16, 17, carrying springs 18 controlling two valve flaps 13, 14. The arms 16, 17, terminate in surfaces 20 which are a close fit in the housing 19 and which are adapted to contact with blocks 27. These blocks 27 are attached to beater elements 23, 24 slidable over guide pins 25. In the positions shown the valve plate 13 is closed and the valve plate 14 is open so that suction is applied to the right-hand section 4 of the nozzle. Suction in the right-hand chamber then draws down the right-hand arm 16 whereupon the opening 12 is closed by the valve 14 and the valve 13 opens the left-hand side 3 to suction. The rising movement of the arm 17 allows the beater 23 to rise and falling arm 16 results in the beater 24 being pushed down. The oscillating valve and arm apparatus is carried by a cover 6 which is pivotally secured to the main nozzle.
Patent GB-1456118-A (GB)
IPC: B41F13/00
Filed: 1974-08-07
Abstract: 1456118 Driving printing machines HEIDELBERGER DRUCKMASCHINEN AG 7 Aug 1974 [9 Aug 1973] 34791/74 Heading B6C [Also in Division F2] A multi-colour rotary printing press has printing units 1-4, the units being driven by a gear train comprising gear-wheels attached to cylinders 8-20 all in mesh, drive to this gear train being supplied at at least two points from a drive train, there being one or more torsionally flexible transmission members the or each of which limits the torque transmitted between respective pairs of adjacent input points. The transmission members may be between the power input points, or may be between the point at which power is branched from the drive train and the input point of the gear train. The transmission members may be adjustable to vary the torque limit, and may be a torsion bar 34, or a device as in Figs. 3 and 4 (not shown).
Patent GB-392640-A (GB)
Title: Process for the preparation of metallic sulphides along with metals or massive silicon
IPC: C01B33/021
Filed: 1931-12-16
Abstract: Ores or rocks are mixed with aluminium and sulphur, with or without the addition of materials such as alkali nitrates, bauxite, corundum, pyrolusite or cryolite, and ignited, whereby there are obtained metal sulphides along with silicon or metals or alloys, the soluble and insoluble products being separated and further treated in known manner.  In some cases, e.g. in treating ilmenite, the products may be dissolved in sulphuric acid and the solution hydrolised for the precipitation of metal oxides. According to the nature of the ores treated, the products obtained may be sulphides of potassium, sodium, iron, calcium and beryllium; oxides of aluminium and titanium; silicon; and metals and alloys such as nickel, magnesium, calcium, beryllium, zinc, chromium, titanium and ferro-silicon.ALSO:Ores or rocks are mixed with aluminium and sulphur, with or without the addition of materials such as alkali nitrates, bauxite, corundum, pyrolusite or cryolite, and ignited, whereby there are obtained metal sulphides along with silicon or metals or alloys, the soluble and insoluble products being separated and further treated in known manner.  In some cases the products may be dissolved in sulphuric acid and the solution hydrolised for the precipitation of metal oxides.  According to the nature of the ores treated, the products obtained may be sulphides of potassium, sodium, iron, calcium, and beryllium; oxides of aluminium and titanium; silicon; and metals and alloys such as nickel, magnesium, calcium, beryllium, zinc, chromium, titanium, and ferro-silicon.
Patent GB-826503-A (GB)
Title: Improvements in and relating to shock-absorbing bearings
IPC: F16C27/02
Filed: 1956-11-15
Abstract: 826,503. Bearings. SOC. CIVILE D'ETUDES DE BREVETS D'APPAREILS DE PRECISION, S.C.E.B.A.P. Nov. 15, 1956 [Feb. 24, 1956], No. 34974/56. Class 12 (1). A shock-absorbing bearing mounting comprises an annular spring 4 having inwardly directed projections 8 which engage an annular groove 12, having a bevelled wall 12a, in the bezel 10 of the end-store 3, and outwardly directed tongues 7 adapted to engage under a lip 5.of the bearing body 1. The projections 8 and tongues 7 are opposite each other and are uniformly distributed around the periphery of the ring, the latter being reduced in width on each side of each projection to facilitate torsional distortion of the ring when the endstore is displaced. In a modification, inner projections 8a, Fig. 3, are staggered with respect to tongues 7a and distortion of the ring is by bending and not by torsion.
Patent GB-408740-A (GB)
Title: Improvements in or relating to clay-working machines
IPC: B28B3/22
Filed: 1932-12-10
Abstract: 408,740. Pugging and de - aerating clay. FAIRWEATHER, W. C., 65, Chancery Lane, London.-(International Clay Machinery Co. ; 1145, Bolander Avenue, Dayton, Ohio, U.S.A.) Dec. 10, 1932, No. 35058. [Class 87 (ii).] In preparing and de-aerating clay for moulding, the material is passed in turn through a pugmill 5, a de-aerating chamber 6, and an extrusion chamber 7. All the chambers are traversed by a single worm shaft driven by the motor 2 through a flexible coupling and suitable reduction gear. In the chamber 5 the shaft is provided with skeleton pugging blades 8, and a single convolution 12 which severs the foremost material and delivers it to the chamber 6 through the detachable coned die 13 furnished with a renewable ring 14. The chamber 6 is exhausted through the nozzle 19 in the gasketed removable cover 16 carrying the baffle plate 18, and the shaft therein is furnished with blades 15 for re-pugging, one of which acts as a cutting blade for severing the clay delivered through the die 13. The extrusion chamber 7 carries a renewable lining 21 and the shaft therein is furnished with a complete worm for delivery through the die 23. Tension rods 25 connect the forward end of the extrusion barrel to the standard 4.
Patent GB-309215-A (GB)
Title: Improved spray producer
IPC: B05B11/00
Filed: 1927-12-28
Abstract: 309,215. Saper, L. Dec. 28, 1927. Flexible-chamber pumps.-A spray-producer applicable to perfume bottles or the like comprises a chamber with an internal diaphragm, all made of a flexible material. When the bulb 1 is compressed laterally the diaphragm 2 closes the end of the flexible tube 3 and the air container in the bulb is expelled through the orifice 7. When the lateral pressure is released the orifice 7 closes and liquid is then drawn from the container, the neck of which is closed by the part 4, through the tube 6 and the bulb. When pressure is again applied to the bulb, the tube 3 will again be closed and the liquid will be forced through the orifice 7. In a modification the flexible tube 3 is replaced by a valve-like opening in the diaphragm 2.
Patent GB-1011048-A (GB)
Title: Pyrazolopyrimidine derivative and the production thereof
IPC: C07D487/04
Filed: 1963-09-06
Abstract: The invention comprises 2,3-dimethyl-7-amino - pyrazolo - [1,5-a] - pyrimidine, and its preparation by reaction of 3,4-dimethyl-5-amino-pyrazole with an alkyl a -alkoxymethylene-a -cyanoacetate either (a) in an acidic medium to give a 2,3-dimethyl-6-alkoxycarbonyl - 7 - amino - pyrazolo - [1,5 - a] - pyrimidine, or (b) in a neutral medium to give an alkyl a  - (4,5 - dimethylpyrazol - 3 - yl) - amino - methylene -a -cyanoacetate and treating this with an acidic or basic medium to give the product of (a), hydrolysing this product to the corresponding carboxylic acid, and heating this to a temperature higher than its melting point. The product may be converted to an acid addition salt.  The compound of the invention, and its acid addition salts, have antipyretic, analgesic and anti-inflammatory activity, and may be used in pharmaceutical compositions in combination with a carrier, in forms suitable for oral or parenteral administration, e.g. as tablets, capsules, dragees, solutions or emulsions.
Patent GB-441429-A (GB)
Title: Process and apparatus for the reduction of fine iron ores
IPC: C21B13/08
Filed: 1934-12-10
Abstract: 441,429. Metallurgical furnaces. WINTERSHALL AKT.-GES., 139, Hohenzollernstr., Cassel, Germany. Dec. 10, 1934, Nos. 35487, 35488, and 35489. Convention dates, Dec. 12, 1933, July 23, 1934, and July 23, 1934. [Classes 51 (i) and 51 (ii)] In the reduction of pulverized iron ores to iron powder in a rotary furnace, the reaction temperature is obtained by partial combustion of the reducing gases with pure oxygen, the escaping gases being treated for the removal of combustion products and returned to the furnace together with the requisite quantity of fresh gases. The reduction gases employed are preferably substantially free from hydrocarbons and may consist, for example, of water gas or cracked coke oven gas. As shown, a compressor g sucks the gases escaping at e from the furnace b through a cooler f and forces them, at a pressure of from 5 to 30 atmospheres, through a carbon dioxide washing tower h; the gases thus freed from carbon dioxide and steam, after reheating in the tubes of the cooler f and passage through a pressurereducing device l, are returned through pipe m to the discharge end of the furnace, the necessary fresh gases being added at o. The oxygen for combustion is delivered through a series of inclined nozzles v, Fig. 2, extending from pipes u through apertures d in the furnace shell, the supply being so controlled that oxygen is discharged only through those nozzles disposed in the upper half of the furnace. This control is effected by a device comprising rotary and fixed parts w, z, the former having cells communicating with the pipes u and the latter being fitted with an obturating flange in its lower half. When a mixture of carbon monoxide and hydrogen is used for the reduction, the process may be modified by converting the carbon monoxide to carbon dioxide and washing out the latter before the gas is supplied to the furnace ; in this case, the gas actually entering the furnace consists of substantially pure hydrogen and steam only has to be removed from the escaping gases before their re-delivery to the furnace.
Patent GB-1099497-A (GB)
Title: Ropes
Inventor: THOMPSON EDWARD
IPC: D07B1/02
Filed: 1964-08-31
Abstract: Ropes made from polyolefine filaments or fibres have a non-drying vegetable oil distributed through their structure. The rope may be of linear polyethylene or polypropylene, for example stereoregular polypropylene.  The oil may have a viscosity of up to 1500 centipoises at 25 DEG C, peanut oil and olive oil being examples, and the finished rope may comprise 2 to 5% by weight of said oil based on the weight of the rope.  The oil may contain one or more antioxidant stabilising substances and may also contain up to 0.5% by weight of another lubricant based on the weight of the rope.  By non-drying vegetable oil is meant an oil which does not readily undergo antoxidation to sticky polymeric products.
Patent GB-799217-A (GB)
Title: Improved vent plug for electric accumulators
IPC: H01M2/12
Filed: 1956-11-21
Abstract: 799,217. Batteries. AKTIEBOLAGET TUDOR. Nov. 21, 1956 [Nov. 24, 1955], No. 35603/56. Class 53. A vent plug 1 for an accumulator contains crushed microporous material 6 which prevents drops of liquid escaping with the gases. The material 6 can be, for example, microporous rubber, polyvinyl chloride, polyethylene or paper impregnated with synthetic resin and may be waste material from separator manufacture. The material may be impregnated with wetting agent.
Patent GB-871028-A (GB)
Title: Improved power transmitting means between a tractor and an implement
IPC: B60K17/28
Filed: 1957-11-15
Abstract: 871,028. Ratchet clutches. MASSEY FERGUSON Inc. Nov. 15, 1957 [Nov. 30, 1956], No. 35604/57. Class 80 (2). [Also in Group XXXI] A hitch element 32 on an agricultural implement is constrained to adopt a position of registration with a towing element 27 on a tractor when a driven clutch component 58 and a guide 54 on the implement operating shaft 40 are engaged with a driving clutch component 16 and a guiding socket 12 on the power-take-off shaft 10. The shaft 40 is connected by universal joints 46, 50 and a shaft 45 with the guide 54 and the driven clutch component 58 which consists of three spring-loaded pawls for engagement with a circular series of teeth on the driving component 16 so that the shaft 40 may over-run the shaft 10. A stub portion 48 on the universal joint 50 has a bevelled end to facilitate entry into a pilot bore in the socket 12 and is supported for limited angular movement relative to a bracket 70 by an anti-friction bearing (not shown). The bracket is carried by a parallelogram linkage 78 ... 81 connected by plates 84, 85 to a second parallelogram linkage 88 ... 91 mounted on a plate 86 connect to the drawframe 30 of the implement by a vertical pivot 92 coaxial with an eye on the hitch element 32. Torsion springs 94, 96 balance the weight of the parts for driving the shaft 40 and urge them to a forward position while a wing nut on the upper forward pivot of the linkage 78 ... 81 serves to hold the guide 54 at an appropriate height to register with the socket 12. The towing element 27, which consists of a hook closed by a spring latch operated from the tractor seat, is aligned with the eye of the hitch element by a stop 33 when the tractor is backed towards the implement while the parallelogram linkages are displaced rearwardly against the springs 96 until a stop 98 is reached. Further rearward movement of the tractor displaces the element so that the operator knows the power lift may be operated to couple the towing and hitch elements.
Patent GB-1391143-A (GB)
Title: Magnetic transducer
IPC: G11B5/37
Filed: 1973-07-26
Abstract: 1391143 Playback transducer INTERNATIONAL BUSINESS MACHINES CORP 26 July 1973 [5 Sept 1972] 35670/73 Heading G5R [Also in Division H1] A magnetic playback transducer comprises a semi-conductor substrate, a Hall effect element formed in the substrate and a layer of magnetic material, e.g. ferrite, coated on the substrate, the layer defining the pick-up gap and the gap in which the Hall effect element is located. The substrate which may be of silicon, germanium, indium antimonide or indium arsenide comprises a P-type layer 13, an N-type layer 14 and a dielectric, e.g. an oxide, layer 12. The Hall element is formed in portion 15 defined by an isolation ring 16 produced by a P-type diffusion through the N layer or by forming a moat in the layer 14 down to the layer 13 and filling this with oxide. A series of openings 19A -23A are then formed in the dielectric layer for diffusing a higher concentration of N-type impurities into the portion 15 to form N + regions at the points 19D to 23D where the electrodes of the Hall element are located. A magnetic film 25 is then coated over the layer 12 to form the polepiece 5 and also part 6A of the polepiece 6. Another oxide layer 26 is then formed over the structure to produce the transducing gap 9 and the remaining part 6B of the polepiece 6 is formed by an additional deposition of the magnetic film. The structure is then coated with an insulating layer, e.g. of silicon dioxide, and the connections to the electrodes of the Hall element formed by conventional thin film techniques. These Hall element electrodes are formed in line with current being applied between the inner electrode 21D and the two outer electrodes 19D and 23D and the voltage output being obtained from the electrodes 20D and 22D.  In two further arrangements Figs. 7 and 8 (not shown), the Hall effect element is left as a "mesa" by etching away portions of the layer 14 and the magnetic film polepieces are formed within the etched away portions. In the Fig. 8 arrangement the transducing gap is turned through 90 degrees.
Patent GB-467276-A (GB)
Title: Improvements in or relating to apparatus for testing the hardness of materials
IPC: G01N3/42
Filed: 1935-12-27
Abstract: 467,276. Testing hardness of materials. RULE, J., and HOLMAN BROS., Ltd. Dec. 27, 1935, No. 35882. [Class 106 (ii)] Comprises opposed members for bearing a workpiece under test, a C-shaped spring support for the members, and means to stress the support and thereby load the members to produce indentation of the workpiece in combination with means for indicating the consequent relative movement of the end parts of the support. The extremities 2, 3 of a stiff C- spring 1 are extended into parallel arms 4, 5 of which the former carries a dial gauge 8, the plunger 12 of which is adapted to engage an adjustable screw 49 carried by the latter. The arm 5 is in one with a bracket forming a guide 16 for an anvil 17, the other guide 18 for which is formed on the inner end of a handle 19 fixed to the spring. The anvil is guided by a sleeve 21 on a bolt through a slot in which the spring 1 passes. Diametrically opposite the anvil a bracket 27 is clamped to the spring. This bracket carries a strut 26 with indenting ball 48, and also the pivot pin 30 of a lever 32 which pin has formed on it an eccentric or cam 31 engaging a recess in the spring 1. A link 36 pivoted to handle 19 has a notch which engages over a pin 35 on the lever 32. In use, the specimen 25, a rock drill, is placed in the anvil and the dial indicator brought to zero by manipulating the screw 49. The small lever 41 is then grasped to turn. the plate 38, a pin on which knocks out the link 36 releasing the lever 32 which is moved down until abutment 24 engages the abutment 33. This movement turns the eccentric and in effect lengthens the strut 26 forcing the ball into the specimen and separating the jaws 4, 5 thus causing the dial indicator to operate. Fixed pointers 54, 55 may be set at desirable limits of hardness.
Patent GB-1471906-A (GB)
Title: Amplifier circuit having a floating input stage
IPC: A61B5/308
Filed: 1974-08-15
Abstract: 1471906 Amplifying circuits TEKTRONIX Inc 15 Aug 1974 [4 Oct 1973] 35896/74 Heading H3T  A floating input amplifier stage derives its D.C. power from an A.C. voltage at the secondary of a transformer having a primary winding connected to an oscillator supplying the A.C. voltage and the output signal is derived by detecting the changes in power supply to the oscillator due to varying loading caused by the input signal. Input stage 15 has balanced input terminals 16, 17 and a load 19 and derives its power from the secondary 9 of transformer 7 via a bridge rectifier circuit comprising diodes 55-58 and capacitors 64, 65: a floating reference is established at terminal 60. The power drawn by amplifier 15 modulates the output from a push-pull oscillator comprising transistors 35, 37, the primary 5 of transformer 7 and feedback winding 39. The power drawn by the oscillator from source +V s  via resistor 3 varies in accordance with the signal, so that amplifier 22 derives from virtual earth point 3 a signal which is amplified and supplied to output terminals 26, 28.
Patent GB-305124-A (GB)
Title: Improvements relating to the inner tubes of pneumatic tyres
IPC: B60C5/10
Filed: 1928-12-06
Abstract: 305,124. Ritchie, A. Jan. 31, 1928, [Convention date]. Air-tubes.-The straight-butted closed ends 3 of a discontinuous air-tube are clamped to the wheel rim 1 by the inflating-valve 4 and a " dummyvalve " 6, respectively.
Patent GB-1095923-A (GB)
Title: Automatically reversible gear pump
IPC: F16N13/20
Filed: 1965-08-23
Abstract: 1,095,923. Rotary pumps. CARRIER CORPORATION. Aug. 23, 1965 [Sept. 1, 1964], No.36126/65. Heading F1F. A reversible rotary-pump of the n and n+1 lobe type for effecting lubrication of a compressor comprises an internally-lobed or toothed gear 43, Figs. 1 and 3, meshing with an externallylobed or toothed gear 45 rotatably mounted on an eccentric portion 40 of a carrier 32, which is rotatably lodged in a non-rotatable axially-movable member 25 so as to render the flow of lubricating oil unidirectional irrespective of the direction of rotation of the gears, the gear 43 being coupled to one end of a crank-shaft 7 in the compressor by a pin 44 to rotate therewith. Rotation of the carrier 32 is restricted to angle of 180‹ by a pin 35 that is attached to an axially-movable plate 24 and engages with an arcuate recess 38 in the said member. In operation, lubricating oil is drawn into working spaces between the gears from a reservoir through an opening 20 in a cover 17 and an arcuate inlet-port or passage 28 formed in the member 25, the plate 24 and a further axially-movable plate 23, which is engaged by a compression spring 19 lodged in the cover 17. Lubricating oil is ejected from the working spaces through an arcuate port or passage 29 in the member 25, an opening 34 in the plate 24 and a passage 41 in the carrier 32 communicating with lubrication passages 9, 10 in the crank-shaft 7. If the direction of rotation of the crank-shaft is reversed, the carrier 32 is rotated through an angle of 180‹ by the action of the gears to produce corresponding displacement of the gear 45 and prevent reversal of the pumping effect. Alternatively, the pump comprises an internallylobed or toothed gear 57, Fig. 4, meshing with an externally-lobed or toothed gear 58 rotatably mounted on an eccentric portion 84 of a cylindrical carrier 76, which is rotatably lodged in a non- rotatable axially-movable member 65, the gear 57 being coupled to one end of a crank-shaft 55 in the compressor by a pin 59. Rotation of the carrier 76 is restricted to an angle of 180‹ by a pin 80 attached to the member 65 and engaging with slot or recess 80 in the carrier. Recesses 70, 72 in the member 65 connect inlet and outlet ports 74, 75 to corresponding passages 50, 51 for lubricating oil in a bearing housing 53 for the crank-shaft, the outlet recess 72 being connected by a passage 77 to a chamber containing a compression spring so as to effect pressure-loading of the member 65. Rotation of the member 65 is prevented by a pin 66 engaging with a cover 64. Axial movement of the carrier 76 relative to the member 65 is prevented by a ring 79. Reversal of the direction of rotation of the crank-shaft causes rotation of the carrier 76 and displacement of the gear 58 through an angle of 180‹ to prevent reversal of the pumping action.