baber/WOPTO huggingface dataset:
Patent GB-698547-A (GB)
Title: Improvements in or relating to push button electric switches
IPC: H01H13/58
Filed: 1950-09-21
Abstract: 698,547. Snap-action switches. WARD & GOLDSTONE, Ltd., and COUYOUMDJIAN, A. O. Sept. 7, 1951 [Sept. 21, 1950]. No.23134/50. Class 38(v) A push-button switch is operable on and off by successive depressions of the button 17 which is urged outwards by two aligned compression springs 22, 26 which engage between them a conducting cross-bar 24 on a plunger 23 slidable and rotatable relatively to the button, the cross-bar co-operating with a fixed ring of ratchet teeth 27, defining angularly spaced on and off positions of the bar, and being operated by a ring of ratchet teeth 34 formed on the inner end of the button. Depression of the button causes teeth 34 to depress the bar 24 until it is moved over the crest of teeth 27 when it is raised and rotated rapidly through 90 degrees by the spring 26 and edges 27b of teeth 27, so as to bridge contacts 28. The next depression of button 23 causes a further 90 degrees rotation to the off position, and so on. The button is prevented from rotation by keys 16 thereon acting in grooves 15 in the body part 14.
Patent GB-1270220-A (GB)
Title: Display device
Inventor: LINDBURG N L
IPC: H01J31/15
Filed: 1970-05-13
Abstract: 1,270,220. Alpha-numeric display lamps. RCA CORPORATION. 13 May, 1970 [13 May, 1969], No. 23202/70. Heading H1F. In an alpha-numeric display lamp comprising a plurality of filaments 29 mounted on a substrate 24, the substrate is held in spaced relation to the inside wall of the lamp envelope 82 by a pair of leaf springs 42. The springs preferably form the legs of a U-shaped sheet metal frame 40 which has bent tabs 56, 64, 66 to engage the edges of the substrate and tapered edges 74 to facilitate the insertion of the substrate and frame assembly into the envelope. In alternative arrangements the springs are separate from one another and pass through longitudinal slots adjacent the sides of the substrate (Fig. 5, not shown) or engage in spaced notches (96) in the edges (Fig. 6, not shown).
Patent GB-431098-A (GB)
Title: A four stroke cycle internal combustion engine
IPC: F02F1/38
Filed: 1934-08-11
Abstract: 431,098. Cylinders. NASH, F., Sheepridge, Little Marlow, Buckinghamshire. Aug. 11, 1934, No. 23212. [Class 7 (ii)] A six-cylinder overhead-valve engine has, in each cylinder, a single inlet valve d inclined at 45‹ and a pair of exhaust valves e, the diameter of each exhaust valve being two thirds that of the inlet valve. The exhaust valves are arranged radially in a spherical part of the combustion chamber roof and the inlet valve in a flat part ; the sparking plug is located at a<2>. The admission passage for the three cylinders at each end of the block are separate and each comprises a balancing chamber j<4> connected to its downdraught carburetter by a flange j<1> and to the cylinders by a three-branched manifold j, each branch leading to passages in the block which gradually increase in cross-sectional area as they approach the ports. The exhaust passages e<1> diverge as they leave their cylinder ports. The valve gear, which is enclosed in a casing h comprises separate inclined rockers g for each exhaust valve.
Patent GB-867576-A (GB)
Title: Improvements relating to filter sleeves
Inventor: HEATH THOMAS ASTON
IPC: B01D46/02
Filed: 1958-07-19
Abstract: 867,576. Gas filters. HEATH FILTRATION Ltd. July 20, 1959 [July 19, 1958], No. 23248/58. Class 8(2). Filter sleeves 5 made of flexible fabric or like woven material are distended by ring 4, of polyvinyl or like inert plastic material, made from beading or rod preformed to a circular shape and bonded to form rings.
Patent GB-316877-A (GB)
Title: Improvements in or relating to electric devices for measuring potential differences
IPC: G01R19/00
Filed: 1929-07-29
Abstract: 316,877. Naamlooze Vennootschap Philips' Gloeilampenfabrieken. Aug. 3, 1928, [Convention date]. Pressure meters. - In instruments for measuring voltages, in which the voltage to be measured is applied between the grid and cathode of a thermionic valve T, the anode and grid voltages are taken from one or more resistances r<1>, r<2>connected as a potentiometer. Preferably the ratio of these resistances is equal to the amplifier factor of the valve. For the measurement of small voltages, a valve having a small amplification factor may be employed. The instrument is suitable for the measurement of direct or alternating voltages; in the latter case the sensitivity may be increased by connecting a condenser in parallel with the resistance r<2>. A second condenser may be connected in parallel with the resistance r<1>, the ratio of the values of the condensers being preferably inversely proportional to the values of the resistances across which they are connected.
Patent GB-944681-A (GB)
Title: Discharge door mechanism for mixing machine
IPC: B29B7/26
Filed: 1962-06-18
Abstract: 944,681. Batch mixing machines. STEWART BOLLING & CO. Inc. June 18, 1962 [Sept. 27, 1961], No. 23308/62. Heading B1C. In a Banbury type mixer for plastic substances the discharge door 13 is carried on arms as 40a secured to a shaft 33 carried in the mixer housing by flexible bearings, whereby the shaft has limited pivoting movement and the door is self-adjusting on closure. The flexible bearings may comprise rubber bushings (see Figs. 3 and 4, not shown). The door is actuated by a double-acting pressure-fluid cylinder 68 having a piston rod 69 and crosshead 56 guided by slide-bars as at 59. Members as 35 adjustable for length are pivoted to the discharge door and crosshead as at 34, 62 respectively and form a toggle joint when the door is closed. The open position of the door and crosshead is shown by the phantom lines 13a, 56a. The door may have passages 77 for a heat exchange medium, supplied through conduits connected to axial bores as at 80 in the shaft 33.
Patent GB-797692-A (GB)
Title: Shields for nuclear reactors
Inventor: LOCKYER IVO JOSEPH
IPC: H01J23/30
Filed: 1955-08-12
Abstract: 797,692. Moderating neutrons. MORGAN CRUCIBLE CO., Ltd. July 31, 1956 [Aug. 12, 1955], No. 23340/55. Class 39(4). A reactor shield for moderating and absorbing neutrons is made from a material comprising a boron compound dispersed in graphite. 50 parts of graphite dust finer than 100 mesh and 25 parts coarser than 50 mesh are mixed with 25 parts of pitch or tar and 30 parts of anhydrous borax, cooled, and then gristed or rolled. A block is formed by putting the material into a mould by increments, tamping each layer, then heating to about 1000‹C. to carbonize the binder and to melt the borax without decomposing or volatilizing it. Blocks of the material may be built up to form a wall around a reactor. Between “ per cent and 10 per cent by weight of boron is required for shielding, but less is required to attenuate neutron flux.
Patent GB-901329-A (GB)
Title: Improvements in or relating to combined view and range-finders for photographic cameras
IPC: G03B13/20
Filed: 1960-07-05
Abstract: 901,329. Combined range- and view-finders for photographic cameras. LEITZ G.m.b.H., ERNST. July 5, 1960 [July 11, 1959], No. 23428/60. Classes 97 (1) and 98 (1). In a combined view- and short home base range-finder for a photographic camera wherein a lens or lens system in the measuring beam of the rangefinder forms an intermediate image in the plane of a viewfinder field defining mask, the view-and range-finder fields being superposed by two or more prisms in the viewfinder beam, one of the prisms has three operative surfaces, one of which forms a partially reflecting collimating mirror, another of which is transparent and parallel to the said intermediate image plane, and the third is transparent and so disposed relatively to the other two in the viewfinder beam that light from the intermediate image plane is totally reflected by it to the collimating mirror which reflects some of the light through the said third surface for simultaneous observation with the viewfinder light rays which pass through the partially reflective collimating mirror and the said third surface. As shown, the rangefinder measuring beam emerging from a roof prism 5 is focused by a lens 4 controlled by displacement of the cam 6a on the camera lens focusing mount to form an image in the plane of the plate 7 carrying boundary markings indicating the viewfinder field. This plate 7 is illuminated from a window 9 by means of a mirror 8 having a central aperture 8a and by means of a displaceable masking plate 7a, which may be moved automatically on changing camera lenses, only one set of field boundary markings is made visible at a time. To effect parallax correction, both plates 7, 7a may be moved bodily in accordance with the camera focus setting. The images of the viewfinder field frame and of the rangefinder measuring beam are combined with the direct viewfinder beam by means of prisms 1, 2, 3, the boundary 11 between prisms 1 and 2 being an interrupted curved mirror surface while the boundary 12 between the prisms 2, 3 totally reflects light passing through the plates 7, 7a while passing light coming from the boundary 11, the boundary 12 being formed either as an air cell between cementing at the margins of the prisms 2, 3 or being formed of cement differing in refractive index from the prisms 2, 3. The mirror 11 and/or the gap 12 may be spherically, aspherically or torically curved.
Patent GB-1089125-A (GB)
Title: Improvements in or relating to golf tees
IPC: A63B57/00
Filed: 1965-06-03
Abstract: A golf tee comprises a stem which is hollow for part of its length, whereby a plurality of similar tees may be stacked one on top of the other, and further comprises coloured, flexible projections at or adjacent the upper end of the stem for aiding location of the tee should it be dislodged during a drive off.
Patent GB-609726-A (GB)
Title: Wear surface filling for an engine cylinder
IPC: F16J10/04
Filed: 1945-09-14
Abstract: A filling compound for a piston ring surface is composed of a fine or colloidal graphite base, a binder, phosphoric acid, water and a thinner.  The binder is preferably a resin and preferably the compound includes a solvent and an emulsifier.  The compound is sprayed and allowed to dry and is then baked and is thus bonded to the surface by a phosphate of the metal of which the surface is composed.ALSO:The piston ring travel surface of an engine cylinder is first relieved as described in Specification 599,161 and the relieved surface is filled with a compound composed of a fine or colloidal graphite base, a binder, phosphoric acid and a thinner material. The binder is preferably a resin and preferably the compound includes a solvent and an emulsifier.  The compound is sprayed and allowed to dry and is then baked and is thus bonded to the surface by a phosphate of the metal of which the surface is composed.  The relieved parts may be filled first and then the surface sprayed.  The Specification as open to inspection under Sect. 91 comprises also the application of the treatment to pistons and piston rings.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1468218-A (GB)
Title: Method and a device for data recording
IPC: G11B20/10
Filed: 1974-05-29
Abstract: 1468218 Data recording ELECTRICITE DE FRANCE (SERVICE NATIONAL) 29 May 1974 [29 May 1973] 23846/74 Heading H3H To save on memory capacity required for recording data, digital samples representing a time-varying input f are passed through shift register stages 5 0 -5 15  and the middle sample in a group of three consecutive stages is eliminated if its value does not differ by more than a set amount from the arithmetic mean of the outer two samples, the time between the retained samples being recorded in a corresponding shift register stage 9 1 -9 15 . As shown, a time-varying analogue input f is converted at 1 into digital samples 4 which are stepped progressively through shift register stages 5 0 -5 15 . Prior logic 66 selects the three consecutive stages which hold the oldest samples separated by equal time intervals for connection via multiplexers 23a, 23b, 23c to the analyser 39. When a sample is eliminated, only the more recent samples are advanced and I unit is added to the appropriate time register stage 9 1 -9 15 . Only those samples reaching the end stage 5 15  are memorized in store 18 together with associated time interval data from 9 15 . Details of the logic and analyser are given, Figs. 4 to 6 (not shown).
Patent GB-532158-A (GB)
Title: Improvements in or relating to the polymerisation of di-olefines
IPC: C08F36/04
Filed: 1939-08-18
Abstract: 532,158. Synthetic rubber. USINES DE MELLE. Aug. 18, 1939, No. 23865. Convention date, Sept. 16, 1938. [Class 2 (iii)] Diolefines are polymerized in the presence of a peroxide of tetrahydrofurane or its homologues. The peroxides may be made by the careful oxidation of tetrahydrofurane or its homologues for instance by hydrogen peroxide or by exposure to air or oxygen. The peroxide may be concentrated by evaporation in air under slightly reduced pressure. In examples : (1) α-methyl tetrahydrofurane is stirred in oxygen at 10 atmospheres pressure for 24 hours and the peroxide thus formed is added to a dispersion of butadiene in a solution of dextrin, sodium carbonate, sulphoricinate and palmitate, the polymerization occurring in the cold ; (2) α-methyl tetrahydrofurane is peroxidized with hydrogen peroxide and the product is added to isoprene which is polymerized at 40‹C. ; (3) a butadiene dispersion, as in Example (1) is polymerized with the addition of α-methyl tetrahydrofurane at 80‹C. and 12 atmospheres pressure.
Patent GB-1471612-A (GB)
Title: Firearms
IPC: F41A17/00
Filed: 1974-05-29
Abstract: 1471612 Firearm FRANCE ARMED FORCES MINISTER OF 29 May 1974 [1 June 1973] 23868/74 Heading F3C A firearm comprises a body part 20, a breech block 2 which is slidable relative to the body part, a recoil spring 3 which urges the breech block 2 towards a forward, closure position thereof, a mass 4 which is movable relative to the body 20 to retard the recoil of the breech block 2, a step-up lever 5 which is mounted on the breech block 2 and causes the mass 4 to move at a speed greater than that of the breech block, a striker pin 7 which is movable relative to the body part 20, a percussion hammer 8 which is movable relative to the body part 20 between a percussive position, in which it cooperates with the striker pin 7, and a withdrawn position, a safety member 12 which is movable relative to the body part 20 and is biased towards an operative position wherein the safety member prevents movement of the percussion hammer 8 from the withdrawal position to the percussive position, the step-up lever 5, when intact, restraining the safety member 12 from moving from an inoperative position thereof to the operative position, and, when broken in such a manner as to be ineffective, no longer serving to restrain the safety member 12. The latter, which is pivoted at 13 to the body part 20, is urged by a spring 14 towards the operative position and is restrained by a member 15 which is slidable mounted in the body part 20, has one end engaging the safety member 12 and the other end engaging a portion 5a of the step-up lever 5. In use the percussion hammer 8, which is pivoted at 9 to the body part 20, is urged by a spring 10 into engagement with a, striker pin 7 when firing of the firearm is effected. When the breech block 2 returns, a portion S of the lever 5 engages a portion P of the body part 20 and the mass 4 is moved rapidly against the urging of the recall spring 3. If the portion 5a of the lever 5 is broken as shown in Fig. 2, the safety member 12 is no longer retained by the member 15 and the spring 14 urges the safety member 12 into contact with a projection 11a of a cam 11, the latter being non-rotatably secured to the percussion hammer 8 which is therefore prevented from pivotal movement. Thus firing of the weapon is prevented.
Patent GB-383987-A (GB)
Title: Electric coupling circuits for thermionic valve circuits
IPC: H03J3/06
Filed: 1931-08-25
Abstract: 383,987. Wireless receiving systems. HAZELTINE CORPORATION, 15, Exchange Place, Jersey City, New Jersey, U.S.A.-(Assignees of Harnett, D. E. ; 333, West 52nd Street, New York, U.S.A.) Aug. 25, 1931, No. 23882. Convention date, Sept. 25, 1930. [Class 40 (v).] At electric coupling tunable-throughout a frequency range comprises a tunable secondary circuit LC and a primary circuit L2, C2, substantially uncoupled magnetically but tuned to a fixed frequency slightly below the lowest frequency to be received. The primary to secondary coupling is effected by a condenser C1 so proportioned as to provide a substantially uniform overall transmission characteristic throughout the tuning range. The capacity C2 may in the case of an aerial coupling comprise the self capacity of the aerial and in the case of an intervalve coupling may comprise the anode-cathode capacity of the valve. Specifications 273,639 and 315,399, [both in Class 40 (v), Wireless signalling &c.], are referred to.
Patent GB-812989-A (GB)
Title: Electrolytic capacitor
IPC: H01G9/042
Filed: 1956-08-03
Abstract: 812,989. Electrolytic capacitors. STANDARD TELEPHONES & CABLES Ltd. Aug. 3, 1956 [Aug. 9, 1955], No. 23989/56. Class 37. Decrease in capacity with age of a polarized electrolytic capacitor having an aluminium or tantalum anode is reduced by the use of cathode of titanium or of a titanium alloy.
Patent GB-1284911-A (GB)
Title: Improvements in or relating to display devices
Inventor: WALTON EDWARD
IPC: G09F25/00
Filed: 1969-05-12
Abstract: 1284911 Books BRITISH BROADCASTING CORP 12 May 1970 [12 May 1969] 24143/69 Heading B6A A teaching appliance in the form of a book comprises a support 10 constituted by a record sleeve 11 and a back sheet 17 the sleeve and back sheet being bound rogether by a pestellated, plastics element 16 from which depends a number of sheets 27 bearing printed matter associated with the play back from the record. The book is held in the open position by a stay 19 engaged in a bridge member 24 at the rear face of the record sleeve 11.
Patent GB-705149-A (GB)
Title: Improvements in de-denting machine for closed end containers
IPC: B21D1/08
Filed: 1952-09-26
Abstract: 705,149. Restoring shape of metal drums. KRADOSKA, E. C. Sept. 26, 1952, No. 24196/52. Classes 83 (2) and 83 (4) Rolling.-A machine for removing, deformations from a metal drum comprises two end plates one being movable towards the other 'to clamp the drum therebetween and the other being driven to rotate the drum, and a freely rotatable roll:which may be brought into engagement with the drum under. a predetermined pressure, the roll having a circular groove to accommodate a rib or bulge in the drum. The drum 15 is placed on a lower end plate 32. which is freely rotatable on bearings 33 on a hub 30. A motor 24 acting through gears 25, 26 and screw and nut 22, 23 raises the drum into pressure contact with the upper plate 36. This plate is fixed 'to the lower end of a hollow shaft 40 driven through gears 44, 45 and on being contacted by the top of the drum is raised against a spring 42 until it actuates a switch 82 to stop the motor 24. A ring gasket 48 on the 'plate is then firmly pressed on to the drum so as to rotate it and to seal the compressed air or other pressure fluid supplied to the interior of the drum through the shaft 40 and the usual bung-hole 52. Three freely rotatable conical rolls 70 serve to centre the drum as it is raised. The drum, under its internal pressure, is now acted upon by external rolls 55, two rolls being mounted on each of two vertical shafts 60 carried by arms 61 movable by a compressed air cylinder 62 to press the rolls on to the drum. Each roll has a circular groove 57 for rolling an annular rib or bulge 18 and if, on contacting the drum, the groove does not register with the rib, the roll will be moved axially along its shaft into the correct registering position by a helical groove 65 which extends above and below the groove 57. On completing the operation, the drum is lowered until the plate 32 contacts a switch 80 which also stops the motor 24. The framework of the machine includes top and bottom walls 10, 13, a curved back plate 11, side walls 12 and a curved door 14 pivoted to the side walls and operated through gearing by another compressed air cylinder.
Patent GB-1117141-A (GB)
Title: Method of dyeing fibres used in children's toys
IPC: A63H3/44
Filed: 1965-06-09
Abstract: The invention comprises dolls' hair dyed with an indicator dye The doll's hair may be made of nylon, orlon, viscose rayon, cellulose acetate or human or animal hair and is dyed by impregnating the doll's hair with a solution of indicator dye.
Patent GB-205075-A (GB)
Title: Improved regulator for the outlet of liquid in artillery brakes
IPC: F41A25/02
Filed: 1923-10-01
Abstract: 205,075. Gompagnie des Forges et AciÚries de la Marine et d'HomÚ- court. Oct. 6, 1922, [Convention date]. Recoil apparatus.-Relates to apparatus in which the flow of liquid in a recoiling brake cylinder 6 is controlled by a spring-pressed valve 2 the lift of which is limited by a stop 4 automatically adjusted as the gun is elevated. According to the invention, the stop is actuated by a screw 5 which is rotated by a gear 8 adapted to slide during the recoil stroke along a shaft 9 which is rotated as the gun is elevated. As shown in plan in Fig. 2, the shaft 9 is actuated by gearing 11, 12, 13 the. pinion 13 of which is rotated by a rack 14 sliding in the gun cradle under the influence of a cam 18 on the gun carriage.
Patent GB-736934-A (GB)
Title: Improvements in or relating to trigger transistor circuits
IPC: H03K17/60
Filed: 1953-09-03
Abstract: 736,934. Automatic exchange equipment. MOULON, J. M. Sept. 3, 1953 [April 25, 1953], No. 24420/53. Class 40 (4). [Also in Group XL (c)] Ringing current, after rectification, is applied to a transistor 4 in the base circuit of transistor 1 to cause an increase in current in relay 7 in the collector circuit (see Group XL (c)).
Patent GB-638098-A (GB)
Title: Improvements in or relating to riveting machines or appliances
IPC: B21J15/32
Filed: 1947-09-05
Abstract: 638,098. Feeding bifurcated rivets. STEELS & BUSKS, Ltd., and PAYNE, S. J. Sept. 5, 1947, No. 24500. [Class 89 (iii)] [Also in Groups II and XXX] A raceway for mechanically feeding bifurcated rivets from a hopper 1 to a riveting machine 4, 6 and of the kind comprising two sections 3a, 3b separated endwise by a gap bridged by a separator 7 such as a disc or dial formed with a guideway 8 for the passage of the rivets individually therethrough and oscillated to effect transmission of the separated rivets from the preceding section 3a to the subsequent section 3b, is provided with a track blade 16 to ensure that the rivets are fed to the machine 4, 6 with their bifurcations in correct relationship to the inserting means 6. The track blade is formed in sections 16a, 16b corresponding with the sections of the raceway suchwise that the bifurcations of the rivets which project from the raceway straddle a corresponding opposing edge of the track blade. A complementary track-blade section 18 is provided in the separator 7 in edgewise opposed relation to the guideway 8 in the separator and is likewise straddled by the bifurcations of the rivets. Specification 425,242 is referred to.
Patent GB-322188-A (GB)
Title: Improvements in thermostat devices for refrigerating apparatus
IPC: G01K5/44
Filed: 1928-08-27
Abstract: 322,188. Electrolux, Ltd., (Platen- Munters Refrigerating System Aktiebolag). Aug. 27, 1928. Thermostats. - A thermostat for use in refrigerating apparatus comprises a heat-sensitive element containing water and connected by a conduit with a controlling member, whereby increase in pressure set up during the freezing of certain sections of water in or near the element mav be utilized for the purpose of melting previously frozen sections near the controlling member. The sensitive element consists of a steel tube a provided with a screw filling-cap e, and a conduit b at the other end of the tube connects with a diaphragm chamber or bellows. Molten metal may be introduced into the cap prior to use in order to ensure a tight closure; and a similar sealing-means may be adopted at the junction with the conduit.