baber/WOPTO huggingface dataset:
Patent GB-387702-A (GB)
Title: Improvements in or relating to range finders
IPC: G01C3/24
Filed: 1931-08-10
Abstract: 387,702. Range-finders. OWEN, H. E. L., 48, Charleville Road, West Kensington, London. Aug. 10, 1931, No. 22598. [Class 97 (i).] Relates to single-observer range-finders in which the lines of sight from the two ends of a base are inclined at a fixed angle, the observation being made at one end of the base and the length of the base being adjusted to secure coincidence of the images. According to the invention the base is made in three telescopic sections a, b, c and the section a is provided at its extremity with a window d, through which and a forwardly-extending sighting-device h, Fig. 5, a direct view of the object is obtained. Light entering at the outer end of the base section c is received by a penta-prism B and thereby directed along the base to a prism A which directs it to an observation window f. The windows d, f are provided with cross-wires. Coincidence of the images is obtained by pushing the section b into the section a and then, if necessary, pushing the section c into the section b, the range being read off on a scale b<2>, c<2> marked on the sections b, c against the outer edge of the section a. In a modification the direct sighting - means comprises a prism cemented to the upper part of the prism A with its free face parallel to the front face of the latter prism.
Patent GB-1270072-A (GB)
Title: Improvements in cutter mechanisms for agricultural machines and lawn mowers
Inventor: REBER WALTER
IPC: A01D34/416
Filed: 1970-05-11
Abstract: 1,270,072. Cutter mechanisms. W. REBER. 11 May, 1970 [14 May, 1969], No. 22608/70. Heading A1F. A cutter mechanism for lawn mowers or for agricultural machines, either drawn by a motor vehicle or self-propelled, has a rapidly rotating (about a substantially vertical axis) rotor comprising a guideway member 3 driven by a pulley 5, and flexible cutter elements 1 in the form of wires or bands are attached to a common or alternatively separate (Fig. 8) anchorage member or members 2, 2'. These anchorage members are movable, either vertically, Fig. 1, by means of screw 4 or rotatably, Fig. 8, so as to adjust the operative length d of the cutter elements. The elements project generally radially from the rotor but this orientation depends on the construction of the guideway members 3. The cutter members may also be twisted by means of the guide way members 21 (Fig. 8). An external guard e.g. cover 6, is also rotatably mounted, and driven by pulley 7, but a lower guard 8 is rigidly mounted to spindle 9 and need not rotate and may be connected to other such guards.  In Fig. 8 the anchorage members consist of reels 2' arranged with teeth 19, and the lengths d are adjusted by rotating toothed adjusting wheel 20.  The rotors may be driven in rotation in any suitable manner or direction or speed with cutter elements of different rotors working at equal or different heights above the ground.
Patent GB-695473-A (GB)
Title: Improvements in or relating to electrical resistance heating elements
Inventor: AUSTIN REGINALD
IPC: H05B3/16
Filed: 1950-09-14
Abstract: A core of an electrical resistance heating element is composed of silicon carbide or a mixture thereof with a minor proportion of a silicoaluminous material (e.g. fired clay), and its surface is coated with a refractory insulating material.  Preferred prefired core compositions are 100 to 70 per cent. silicon carbide and 0 to 30 per cent. clay.  A temporary binder (e.g. starch or a silicon ester) is used when silicon carbide only forms the core. Preferred coating compositions are clay with sillimanite or alumina or a zirconia-magnesia mixture, the clay being 20 to 30 per cent. of the composition.  When the coating is applied by slip casting, sodium silicate and carbonate are added.
Patent GB-1094395-A (GB)
Title: Improved device for producing light conical paper tubes
IPC: B31C7/02
Filed: 1965-05-28
Abstract: 1,094,395. Grinding. BLANICKE STROJIRNY NARODNI PODNIK. May 28, 1965 [June 4, 1964], No. 22717/65. Heading B3D. [Also in Divisions B4, B6 and F2] In a tube making machine, a device for grinding the edges of paper blanks 100 comprises a motor 61 with a standing shaft 62 and a rotatable cylindrical part on which is secured an emery belt 63, and a lever 65, on a pivot 64, which carries a roller 66 in contact with a cam 67 keyed to the mainshaft of the tube making machine, and a pressing plate 68 between which and the motor 61 a blank is disposed. The lever 65 is lifted by the cam 67 and the plate presses the blank on to the surface of the belt 63 whereby excess paper is ground away and a ground edge having the same profile as the gap between the motor and the plate is produced.
Patent GB-190423-A (GB)
Title: Improvements relating to portable toys dolls or mascots
IPC: A63H3/00
Filed: 1922-08-22
Abstract: 190,423. Fitz-Patrick, O. C. Aug. 22, 1922. Animals, dolls, puppets, and figures.-A removable cover for a hot-water bottle or the like is formed as a toy, doll, or mascot.
Patent GB-609481-A (GB)
Title: Aluminothermic and like exothermic processes
IPC: C22B5/06
Filed: 1944-11-18
Abstract: In an aluminothermic or like exothermic process the temperature and/or the velocity of the reaction is or are reduced by adding to the thermic mixture and/or the components of the mixture a proportion of slag from a previous charge, ground to powder and/or grains, according to the contemplated temperature and/or velocity of reaction.  A sudden increase of temperature after the termination of the reaction may be prevented by the addition of such a slag when the reaction has ended.  The utilization of the invention in the production of manganese from manganese oxides is referred to. Specifications 123,103, 191,167, [both in Class 82(i)], 523,552, 553,568 and 569,235 are referred to.
Patent GB-632873-A (GB)
Title: Improvements in or relating to variable speed chain driving devices
IPC: F16H61/662
Filed: 1947-08-19
Abstract: 632,873. Expanding chain wheels. HAYOT, L. A. Aug. 19, 1947, Nos. 22998 and 22999. Convention dates, Sept. 13, 1946 and May 3, 1947. [Class 80 (ii)] An automatic load responsive and continuously variable change speed chain drive, as applied to a bicycle, comprises free-wheel sprockets 24 attached to flexible radial arms 23 tangentially secured to a crank hub 22 and which in driving the chain 25 yield on increasing load until at maximum torque are wound round the hub 22 thereby producing a minimum gear ratio. The arms 23 have a locally varying modulus of section, being constituted by a plurality of blades of varying length and the end of each shorter blade having contact with an abutment 27 on its adjacent longer blade to oppose its relative sliding thereby creating a number of steps in the range of yield from maximum to minimum extension. The abutment means may comprise knurling on adjacent surfaces on the two blades. The chain is tensioned by two devices, one comprising a pulley 28 secured to the frame by an extensible arm 29 and the other (not shown in Fig. 2), two sprockets spaced by a lever on a spring loaded barrel. In a modification the plurality of sprockets and arms are replaced by a single arm comprising a complete spiral turn on the periphery of which teeth are cut, and two such devices may be mounted in series, which arrangement is applied to a sports cycle, and to an automobile gear box having direct foward and variable foward and reverse drives. To transmit heavy loads two variable speed drives may be arranged in parallel or alternatively a single drive may be connected to two chains in parallel.
Patent GB-1366861-A (GB)
Title: Hand tool
IPC: A01K97/18
Filed: 1971-08-12
Abstract: 1366861 Disgorgers, garden hand tools R C BROWN and G A S WILLIAMS 12 Aug 1971 [13 May 1970] 23046/70 Headings A1A and A1B [Also in Divisions A5 and B4] The tool comprises an elongated body 2 having a fixed jaw 4 to which is pivoted a jaw 5 movable by a rigid link 8 operated by a spring-biased lever 10 adjacent a handle 3. The jaws in the closed position provide a tapered nose to the body 2.
Patent GB-957322-A (GB)
Title: Improvements in or relating to vehicles
IPC: F16H39/00
Filed: 1960-08-31
Abstract: 957,322. Hydraulic transmission of power. C. VAN DER LELY N.V. Aug. 31, 1960 [Sept. 15, 1959], No. 23245/62. Divided out of 957,321. Drawings to Specification. Heading F2C. [Also in Division B7] The description in this Specification is identical with that concerning the vehicle having an hydraulic transmission described in Specification 957,321, but the claims are directed to the control means which is actuated by a member in the event of the vehicle occupying an inclined position relative to the ground to establish a connection between the high pressure side of the pump and a relatively low pressure region so that the pump cannot drive the hydraulic motor of the transmission. Specifications 957,323, 957,324, 957,325 and 957,326 also are referred to.
Patent GB-951241-A (GB)
Title: Improvements in or relating to electric discharge tubes
IPC: H01J1/24
Filed: 1960-07-04
Abstract: 951,241. Semi-conductor devices; thermionic cathodes. PHILIPS ELECTRICAL INDUSTRIES Ltd. July 4, 1960 [July 7, 1959], No. 23284/60. Headings H1D and H1K. [Also in Division H5] The insulating means between the heater. filament and the emissive material support for an indirectly heated cathode of an electric discharge tube consists of two or more succeeding layers having P and N types of conductivity at least at the operating temperature. The PN junction(s) improve the insulating properties at high temperatures when normal insulation deteriorates. In Fig. 1, a tungsten filament 1 is covered with a high resistivity N-type layer 2 of Al 2 O 3  part of which is converted to a P-type layer 3 by the doping action of the tungsten. The inner wall 4 of the cathode sleeve is covered with a high resistivity layer 5 of Al 2 O 3  which is rendered P-type by doping with MgAl 2 O 4  or MgO or BeO. Alternatively the surface 4 can be covered with N-type MgO which at the contact region, acts to convert the intermediate portion of the Al 2 O layer to P-type.
Patent GB-1449088-A (GB)
Title: Composite foams
IPC: B32B5/32
Filed: 1974-05-24
Abstract: 1449088 Composite foams BAYER AG 24 May 1974 [22 Aug 1973] 23315/74 Heading B2E A composite foam consists of a layer of polyethylene foam and adjacent thereto a layer of polyethylene and polypropylene layers. The polyethylene foam may be laminated to a textile layers are bonded together without any bonding agent and the polyethylene foam has been cross-linked by radiation or with peroxide. The composite foam may be in the form of a series of polyethylene and polypropylene layers. The polyethylene foam may be laminated to a textile cover or interlayer. The polyurethane may be rigid or flexible and comprehensive lists of polyisocyanates, polyesters, polyethers, polythioethers, polyacetals, polycarbonates and polyester imides are given as polyurethane precursors, together with lists of suitable catalysts, surfactants, and foam stabilisers. The polyurethane can be blown by volatile organic substances, or substances which liberate gases. Suitable fillers (e.g. BaSO 4 , kieselguhr, carbon black) are mentioned. In Examples, the polyethylene foam layer is placed in a mould and coated with polyurethane reaction mixture, the mould is closed and the mixture allowed to react and foam, then the composite foam is removed. The resultant composite can be used as upholstery material e.g. in motorcar seats, headrests, bumpers or dashboards or furniture, or. when a rigid foam is used, as a heat insulating panel.
Patent GB-614853-A (GB)
Title: Improved hydraulic control for vehicle wheel brakes
IPC: F16D65/22
Filed: 1946-08-06
Abstract: 614,853. Brake operating mechanism. REGIE NATIONALE DES USINES RENAULT. Aug. 6, 1946, No. 23334. Convention date, June 21, 1945. [Class 103 (i)] Brake-operating mechanism comprises a pair of levers 7, 8 mounted with play on pivots 11, 12 and engaging the brake shoes 2 through ' push-rods 9, 10. The levers are operated by a pair of pistons 5, 6 in a cylinder 3 mounted on the exterior of the back plate 4. The levers bear on each other at the middle part during an application so that there is no reaction on the pivots 11, 12. The bearing faces of the levers may comprise ball-races.
Patent GB-158218-A (GB)
Title: Improvements in internal combustion engines
IPC: F02B59/00
Filed: 1920-08-09
Abstract: 158,218. Dock, H. Jan. 26, 1920, [Convention date]. Valves; valve-gear.-A ported valve-plate 3 or 3<1> moves over the open constricted end of the cylinder to control inlet and exhaust ports 11, 12 and to cover the sparking-plug 13 or fuel-injection valve during the exhaust stroke, and the cylinder 2 is kept in fluid-tight contact with the valve plate. In the form shown in Fig. 1, the cylinder is free to slide in a casing 1 and is pressed against the flat slide-valve 3 by springs 5 or by other means. A circular groove 20 with relief ducts 24 is formed on the end of the cylinder, enclosing an area less than the bore of the cylinder; this groove limits the pressure which tends to separate the cylinder and valve during the compression and power strokes and prevents any leakage of gases. The valve is actuated positively by cams 16, rod 18, and toothed rack 51. In the form shown in Fig. 3, an oscillating cylinder works in contact with an oscillating cylindrical valve 3' actuated by cams 40, 41 so as to move only when there is practically no pressure on the bearing surfaces, and so as then to move in the same direction as the cylinder. The cylinder is provided with a groove 20, as in Figs. 1 and 2, and with lateral cylindrical extensions 61 working on a bearing 48 supported on springs or their equivalent. The valve may move oppositely to the cylinder. More than one valve plate may be used. The invention may be applied to engines working on the two-stroke cycle. The valve shown in Fig. 1 may be cooled and may move in any plane.
Patent GB-812768-A (GB)
Title: Improvements in fishing reels
IPC: A01K89/01
Filed: 1956-07-27
Abstract: 812,768. Fishing reels. M.E.P.P.S., MANUFACTURE D'ENGINS DE PRECISION POUR PECHES SPORTIVES, and MEULNART, A. July 27, 1956 [Jan. 11, 1956], No. 23360/56. Class 48. In a fishing reel of the stationary spool type the control device for closing the pick-up loop 5, carried by the rotary drum 6 comprises a spring such as the leaf spring 15 fixedly mounted adjustably intermediate its ends as by a yoke piece 16 and set screw 17, on the rotary drum and at its free end is connected to one end of a flexible non-stretchable link such as the chain 14 hooked at its other end to and wound around a shaft 13 rigid, as through the intermediary of a lever 9, with one end of the pick-up 5, and journalled as in a boss 12 of the drum 6, the other end of the pick-up being bent to form a journal in the drum coaxially with the shaft 13 and the said one end of the pick-up being held in the open position by a stop device (not shown). This stop, when the drum 6 is initially rotated in the winding-up direction, is moved and allows the chain 14 initially wound around the shaft 13 stressing the spring 15, to unwind under the force of the spring 15 thereby rotating shaft 13 and lever 9 to bring the pick-up into the closed position.
Patent GB-996061-A (GB)
Title: Improvements relating to fuels for internal combustion engines
IPC: C10L1/26
Filed: 1961-06-28
Abstract: A leaded gasoline contains a small proportion of an additive of formula <FORM:0996061/C4-C5/1> where the R's are C1- 20 alkyl groups, preferably methyl.  Halohydrocarbon scavengers may also be present. In an example, a compound of the above formula in which all the R's are methyl groups is added to a full-range platformate containing tetraethyl lead, ethylene dibromide, and ethylene dichloride.
Patent GB-235810-A (GB)
Abstract: 235,810. Martin, A. E. Feb. 21, 1925. Gimlets.-A combination tool is provided with a gimlet 18.
Patent GB-648653-A (GB)
Title: Improvements in or relating to audiometers
IPC: A61B5/12
Filed: 1948-09-08
Abstract: 648,653. Audiometers. WALFORD, H. H. T., and ALLEN & HANBURYS (ACOUSTIC AIDS), Ltd. Sept. 8, 1948, No. 23673. [Class 81 (ii)] In order to prevent the output volume of an audiometer being set at a level approaching the threshold of pain for any given frequency the controls for frequency and output level are mechanically intercoupled. In the form described a suitably shaped cam 16, Fig. 3, is mounted on the spindle 13 of the frequency control and rocks a lever 10 about its pivot 11. The remote end of the lever serves as a stop for an arm 21 carried by the output level control spindle 14. In the audiometer with which the arrangement is associated a tone source TS, Fig. 2, supplies an attennuator network S1 S1 AT through a selector switch - or - ac- A B cording to whether an air or bone conduction earpiece is in use, the contacts of the selectors being connected to various points on the attennuator. and the switch arms being ganged to the frequency control of the tone source, so as to compensate for the variation of the normal threshold of hearing with frequency. An adjustable contact CS determines the output level. Provision is also made for direct speech with the patient through a microphone M by appropriate setting of the switch S5.
Patent GB-1099121-A (GB)
Title: Improvements in or relating to gas filters
IPC: B01D46/18
Filed: 1963-06-14
Abstract: 1,099,121. Travelling band gas filter. M. DAVIS. Sept. 14, 1964 [June 14, 1963], No. 23776/63. Heading BIT. A travelling band gas filter comprises an endless filter band of ruptured-cell foamed plastics Fa, entrained over staggered rollers 8a and through washing baths of detergent and rinse water 9a, 10a, in which pinch rolls 11a, 13a, 17a aid washing, located in a housing 1a having in one wall a series of inlets opening into the spaces between converging underside portions of the serpentine part of the band and in the apposite wall a series of outlets opening into the spaces between converging upper portions of the band (Fig. 3, not shown). The openings have suitable converging baffles (23, 24) and communicate respectively with an inlet and an outlet having flanges for connecting to a duct. One of each pair of rolls 11a, 13a is driven by a common electric motor (18a). Rollers 8a are mounted cantilever fashion on one wall while the opposite wall forms a removable panel. The band edges may be reinforced by a strip of P.V.C. and slidingly engage in serpentine channels (20a) extending from rolls 17a to 11a above the baths.
Patent GB-1194674-A (GB)
Title: Vacuum Type Electric Circuit Interrupting Devices
Inventor: ROBINSON ALFRED ALEXANDER
IPC: C22C1/04
Filed: 1966-05-27
Abstract: 1,194,674. Electrodes for vacuum switches or vacuum spark gaps. ENGLISH ELECTRIC CO. Ltd. 18 May, 1967 [27 May, 1966], No. 23780/66. Headings H1D and H1N. The arc supporting electrodes of a vacuum switch or spark gap are formed from a matrix of a low ductility, high melting point metal infiltrated with a low melting point metal of greater electrical conductivity. The metal of the matrix must have a melting point between that of molybdenum and that of copper and a boiling point below 3000‹ C. and may for example be chromium, cobalt, or iron. The matrix is preferably formed by sintering particles of smaller than 250 microns. The infiltrated metal must have a melting point below that of the matrix and below 1200‹ C. and a boiling point less than that of the matrix metal. It may for instance be copper or silver or an alloy of copper with silver, zirconium, tantalum or titanium. An alloy of 99À7% copper and 0À3% zirconium is suggested. It is essential that the matrix and infiltrated metals be chosen so that they do not readily alloy with one another and therefore so that they retain their individual properties in the electrode. In a chromium-copper electrode the copper should occupy 10-30% of the final volume.
Patent GB-791206-A (GB)
Title: Improvements in and relating to a process and a device for packing liquids and pastes in a thermoplastic material
IPC: B65B9/12
Filed: 1956-08-02
Abstract: 791,206. Packaging" NAAMLOOZE VENNOOTSCHAP TECHNISCHE HANDEL MAATSCHAPPIJ AUTOMACO. Aug. 2, 1956 [Aug. 3, 1955], No. 23823/56. Class 94(1). In a device for closing containers of a flexible thermoplastic material by compressing and sealing a tube 1 filled with liquid or paste, a closure member 8 compresses the tube locally and a pressure member 13 presses aside the liquid or paste from the area to be sealed and the tube is then. electrically welded by dielectric heating. By this means the pressure of liquid or paste in the container may be adjusted so that it does not squirt when opened and there is no liquid left between the electrodes when welding takes place. The tube 1 is fed, from right to left in Fig. 1, over a flat surface consisting of an electrode 3 and two flat insulating bodies 4, 5. A second electrode 7 is attached to a carrier 6 which can move downwards to apply the electrodes 7, 3, to the compressed walls of the tube 1. A closure member 8 slides on the carrier 6 and is held in position by compression springs 9. On either side of the carrier 6 are rods 11 hinged to the carrier 6 and to rods 12 which carry a roller 13. The rods 11 are pressed. downwards by springs 14 fixed to supports 15. In operation the carrier 6 is lowered, thus bringing the closure member 8 into contact with the tube and compressing it, and the roller 13 is then forced outwards and presses the liquid or paste away from the compressed section (to the right in Fig. 1). The carrier 6 meanwhile drops further bringing the electrode 7 into contact with the tube, after which welding takes place. In modifications, the closure member 8 may be moved independently of the carrier 6 ; the upper electrode 7 may have a dull knife edge projecting slightly from the surface to cut the material during welding ; the lower electrode 3 may be of conducting material preferably covered with a dielectric material such as that known by the Registered Trade Mark " Pertinax " ; and the roller may be supported by different means as in Figs. 4, 5 (not shown), e.g. by the device which transports the tube. In each modification it is desirable to provide a recess in the closure member 8 in which the roller 13 can be enclosed in order not to leave any liquid trapped in the tube between the closure member 8 and the roller 13.
Patent GB-461981-A (GB)
Title: Improvements in the manufacture of coloured asbestos cement products in sheet form
IPC: B28B17/02
Filed: 1935-08-26
Abstract: 461,981. Cylinder board - forming machines ; asbestos cement sheets. JENNINGS, H. W. K. (Smidth & Co. Aktielskab, F. L.) Aug. 26, 1935, No. 23902. [Class 96] [Also in Group X] Coloured asbestos-cement sheets are produced on a millboard - making machine by mixing the cement slurry with the colouring matter after it has left the hollander 1 and before reaching the making machine 13. The slurry flows at a constant rate from the stirring vat 2 to a mixer 3, to which colouring matter is supplied from a container 4. A travelling filter cloth 7 transfers the slurry from sifting cylinders 8, over a vacuum box 9, and on to a forming bowl 13. Additional colouring matter is sprayed on the slurry while on the cloth 7 by means of a rotary brush.
Patent GB-447360-A (GB)
Title: An improved adjusting device for brake magnets, particularly applicable to electricalmeasuring apparatus
IPC: G01R11/10
Filed: 1935-08-27
Abstract: 447,360. Eddy - current brakes. LANDIS & GYR AKT.-GES., 1, Hofstrasse, Zug, Switzerland. Aug. 27, 1935, No. 24003. Convention date, Sept. 14, 1934. [Class 103 (i)] [See also Group XXXVI] The plates 4 on which the brake magnets 5 of an electricity meter are adjusted in a vertical sense are provided with projections 12 which engage side flanges of a nut 11, the nut being non-rotatable on a screw-threaded spindle 10 which is axially immovable. The nut 11 is guided in a slot 9 and has an overhanging piece 11a resting on the projections 12. The nut 11 is thus prevented from turning and lateral adjustment of the magnets is effected by rotation of the spindle 10.