baber/WOPTO huggingface dataset:
Patent GB-1338864-A (GB)
Title: Air pressure actuator
IPC: F15B11/076
Filed: 1972-03-20
Abstract: 1338864 Pneumatic aduators N SUGIMURA 20 March 1972 [30 March 1971] 12886/72 Heading F1D The supply to and exhaust from opposite sides A 2  B Fig. 2 of a compressed air operated piston 3 is controlled by a selector valve 9 having a centre position in which the air supply to the piston is cut off and the piston has fluid operated means associated therewith whereby the piston is locked in response to movement of valve 9 to its centre position. A bone 4 in piston 3 and its rod 2 forms a hydraulic cylinder into which extends a rod 5 fixed to cylinder 1 and provided with bores 6, 6<SP>1</SP> opening to opposite sides C D of piston 5 and connected by lines 7, 7<SP>1</SP> and solenoid valves 10, 10<SP>1</SP> to an accumulator 8. The selector valve 9 is controlled by solenoids a, b and with a main switch S 3  closed and with S 1  closed a S<SP>1</SP>, open solenoids a, c, c<SP>1</SP> are energized thereby moving valve 9 to the left resulting in movement of piston 3 to the left and since valves10 10<SP>1</SP> are open hydraulic fluid passes from side C to side D of piston 5<SP>1</SP> thus damping piston 3. On opening switch S 1 , valves 9, 10, 10<SP>1</SP> close and piston 3 is locked by hydraulic fluid trapped on opposite sides C, D of piston 5<SP>1</SP>.
Patent GB-963573-A (GB)
Title: Improvements in or relating to key holders
IPC: E05B19/24
Filed: 1963-04-01
Abstract: 963,573. Key-holders. S. R. MANZARDO. April 1, 1963 [April 2, 1962], No. 12913/63. Heading A4G. A key holder comprises an elastic body 10 having a pocket 11 in which is held the key handle with a cam 15 projecting through the handle hole 16, a pocket 17 having a window 20 for holding an identification plate 19, and a recess 22, which may have windows, passing from edge to edge of the flat body 10 for holding message slips. Pocket 12 may be provided with external downward lobes which may be tucked into the pocket to hold thin keys. A rivet may pass across pocket 12 to hold the key and the body may have a protuberance 26 to indicate the correct side of the key.
Patent GB-1092891-A (GB)
Title: Anionic polymerization of lactams
IPC: C08G69/20
Filed: 1965-03-26
Abstract: A lactam is polymerized in the presence of an anionic catalyst and, as promoter, a 1,3-dialkyl - 2 - alkoxyl - cyclobutene - 2 - one - 4 in which the alkoxy group is other than methoxy. Alkyl groups specified are methyl, ethyl and pentyl.  Alkoxy groups specified are ethoxy, isopropoxy, butoxy and octoxy.  Catalysts specified are lactam-metal salts, e.g. sodium caprolactam, triisopropyl aluminium, diethyl zinc, alkali-metal alkyls, alkali-metals and alkaline-earth metals and their hydrides, oxides, hydroxides, carbonates, alkyl magnesium bromides and aryl magnesium bromides.  0.1-10 mole per cent catalyst and 0.05-10 mole per cent promoter may be used.  The catalyst may be added to the molten lactam and the mixture heated to the polymerization temperature before the promoter is added.  The polymerization temperature may be between the melting-points of the lactam and polylactam or between 90 DEG  and 250 DEG  C.  The polymerization may begin at 90-150 DEG  C., the temperature being raised thereafter by the exothermic reaction.  Lactams specified are butyrolactam, caprolactam, oenantholactam, capryllactam, decyllactam, undecyllactam and laurinolactam, or mixtures thereof. Other additives which may be present are blowing agents, e.g. hydrocarbons, dyes, fillers, e.g. wood flour, carborundum, carbon black, powdered shale, coal dust, coke dust, natural or synthetic fibres, or fabric, polystyrene, polyformaldehyde, polypropylene, polyethylene, polyamides, phenoplasts and melamine and urea/aldehyde condensates.
Patent GB-553664-A (GB)
Title: Improved method of and apparatus for drying powdered material
IPC: F26B3/28
Filed: 1942-09-17
Abstract: 553,664. Drying powdered material. GENERAL MOTORS CORPORATION. Sept. 17, 1942, No. 13097. Convention date, Dec. 10, 1941. [Class 34 (ii)] Powdered ceramic material such as is used in making sparking plugs is dried by carrying it on a porous travelling belt 6 exposed to infra-red rays from lamps 34 and at the same time passing a current of dried air through the belt, which is doubled back in passing over rollers 16 in the path of the rays to invert the ceramic material carried on its surface. The air is supplied from a hood 36 above the lamps and is drawn off under suction through a duct 40 below. The material is supplied from a hopper 58 on to an endless belt 52 passing around a support 56 over one end of the belt 6, and is removed by a brush 24 as the belt passes around a roller 41 at the other end. Nozzles 46 direct air across the lenses of the lower lamps to remove dust. The belt may be made of glass or nylon fabric.
Patent GB-559102-A (GB)
Title: Improvements in or connected with apparatus for brewing tea and other beverages
IPC: A47J31/56
Filed: 1942-09-17
Abstract: 559,102. Apparatus for brewing tea &c. STOTT & CO. (ENGINEERS), Ltd., J. and SCHOFIELD, L. Sept. 17, 1942, No. 13123. [Class 129] Apparatus for brewing tea &c. compirses a boiler 1, 5 on which is detachably supported an infusing vessel 2 provided with a channel &c. 4 housing the boiler flue and the uptake pipe 6 for the boiling water. The pipe 6 may have a top 13 for drawing off hot water and this tap may be connected to the gas tap 15, so that when it is opened, the gas supply to the boiler is increased. The boiler vessel has a water jacket 3 fed from a cistern 8 and feeding in turn the boiler 5.
Patent GB-318530-A (GB)
Title: An improved showcard for advertisements and the like
IPC: G09F1/08
Filed: 1928-05-04
Abstract: 318,530. Lloyd & Co., Ltd., N., and Hepple, R. W. May 4, 1928, Figures or models. -A collapsable display card comprises a card having apertures of the size and shape of the articles to be represented and behind which and adjacent to each aperture is a a sheet or sheets of flexible material which can be flexed to project through the apertures so as to represent the articles. As representing tumblers 1 containing liquid being poured into a receptacle 12, the display card 7 has apertures 6 to one edge 5, Fig. 6, of which are attached flexible sheets comprising a front sheet 2 of celluloid and a back sheet 4 of card so that by oppositely flexing the sheets the free edges can be held between the edge 9, Fig. 5, of the aperture and a strip 10 adjacent thereto, so that the celluloid sheet projects through the aperture. Strips 3 of coloured celluloid may be used to suggest liquid in the tumblers. The receptacle 12 is formed of a creased sheet adapted to be pushed forward through an aperture in the display card by a tongue on a back supporting strut..
Patent GB-1435655-A (GB)
Title: Electrophotographic method and apparatus
IPC: G03G15/22
Filed: 1974-03-25
Abstract: 1435655 Electro-photographic micro-fiche apparatus SCOTT PAPER CO 25 March 1974 [9 April 1973] 13144/74 Heading G2H An apparatus for forming a micro-fiche 60, Fig. 11, comprises means for individually processing, i.e. charging, exposing, developing, drying and fixing, a selected frame only of a photoconductive surfaced micro-fiche 60 on which a microimage is to be produced. When copying a document, a carriage for the micro-fiche 60 is indexed to an unused frame selected on a keyboard 408 which, as illustrated, provides for selecting a frame in any of 5 rows A-E and 12 columns 1-12. A charge/expose module 212, a fixing module 240, an air knife 260 and a toning module 270 are mounted in line, and the microfiche 60 is automatically indexed to position the frame to be processed (A1 as shown) opposite, or to carry it past, each processing module in the required order as shown in Fig. 15. The air knife 260 is actuated to dry the frame A1 during the  return movement of the carriage between the toning module 270 and the fixing module 240. The charge/expose module 212 includes a corona wire electrode 224 disposed centrally of, and spaced from the plane of, a frame mask opening, to which electrode 224 a DC biased AC corona potential is applied. The original to be copied is then flash illuminated on a copy board 20 and a microimage thereof is projected by a lens and mirror system on to the frame Al. The toning module 270 has a cavity with a rectangular opening against which the frame A1 is urged for development. A metered quantity of a liquid suspension of toner particles is drawn through the said cavity by suction. Fixing module 240. After drying by the air knife 260, the developed frame A1 is fixed by a high intensity flash in the module 240.
Patent GB-405939-A (GB)
Title: Improvements in or relating to compositions
IPC: E04F15/12
Filed: 1932-05-06
Abstract: A plastic composition suitable for roads, floors, walls, heat insulation, constructional and moulding purposes &c., comprises a mixture of rubber latex or other dispersion of rubber or the like, cement, plaster of paris or the like, a colloid for retarding the coagulation of the dispersers, and/or an agent for retarding the setting of the cement &c.  The dispersion may be concentrated latex and may be vulcanized.  Fillers, sulphur, anti-oxidants and other compounding ingredients may be added.  In an example a composition comprises 40 parts of revertex (R.T.M.), mixed with necessary additions for vulcanization, 5 parts of a solution of 30 parts of casein in 350 parts of a saturated solution of borax, and 55 parts of cement.  Other examples are given.  The composition may be filled with gas pores, as in the manufacture of porous concrete.
Patent GB-131670-A (GB)
IPC: H01J19/30
Abstract: 131,670. Rabinovitch, L., and Cosmos Lamp Works, Ltd. July 24, 1918. High vacua in lamp bulbs, obtaining and maintaining.-To improve the vacuum in an electric discharge apparatus for use in wireless telegraphy or the like, some or all of the metal parts are provided with a film of oxide or other compound of the metal of the parts, or with a film of a gas capable of chemical combination with such parts. One of the electrodes may, for instance, be heated in oxygen, dry air, chlorine, or sulphur di-oxide. Alternatively, the sheath or grid, before or after mounting in the bulb, is electrolytically coated, for instance with a film of oxygen in dilute acid, or with chlorine in brine. After sealing off the tube, the anode is again brought to a dull red heat for a few seconds, prolonged ageing to remove residual gas being unnecessary. Specifications 12272/13 and 2206/14, [Class 39 (i), Electric lamps, Arc &c.], are referred to.
Patent GB-103962-A (GB)
Title: Improvements in or relating to Tyres for Vehicles.
Inventor: PAVLIDES PAUL
IPC: B60C7/14
Filed: 1916-09-18
Abstract: 103,962. Pavlides, P., and Feraldi, L. Feb. 18, 1916, [Convention date]. Metallic spring bodies and cores. - In tyres of the kind formed of a circumferentially - disposed helical steel strip, the convolutions A are of such cross-section as to telescope smoothly on the inner periphery. Each alternate convolution has fixed thereto a stud C which lies in a transverse groove b in a bronze band B fixed in the rim. The groove is wider than the stud, so that the convolutions have some freedom of movement. The internal securing-band a has at one end a bevelled tenon D, which engages a mortise E in the other end and is locked by a set-screw e.
Patent GB-486995-A (GB)
Title: Improvements in automatic guns
IPC: F41A15/14
Filed: 1937-05-10
Abstract: 486,995. Automatic guns. TENNANT, W. J. (Werkzeugmaschinenfabrik Oerlikon) May 10, 1937, No. 13309. [Classes 92 (ii) and 119] Relates to inertia-locked guns in which a front extension 4, Fig. 5, on the breech-block 7 enters a flared portion la of the cartridge chamber and has a lip-shaped projection 3 which sup. ports the base of the cartridge. According to the invention, the extension 4 carries above the projection 3 a pair of extractors 6, Fig. 3, which secure the base of the cartridge against the extension 4 when the cartridge case is being passed rearwardly to engage the ejector 12. The extractors comprise spring-pressed levers pivoted to the sides of the breech-block and at the front are shaped to engage the flare 1a when the breech is closed.
Patent GB-1493561-A (GB)
Title: Transmission hubs
IPC: B62M11/16
Filed: 1976-04-01
Abstract: 1493561 Change-speed gear; ratchet clutches FICHTEL & SACHS AG 1 April 1976 [2 April 1975] 13311/76 Headings F2C and F2D In a multi-ratio hub for cycles having a sunwheel 22 fast on a fixed spindle 8, planets 13 in mesh with the sun-wheel and with a ring gear 14, a coupling member 10 which, when positioned as shown, connects an input member 4 with the planet carrier 11 to establish high ratio and when moved to the right disengages from the planet carrier and couples a part 51 of the ring gear with the input member for direct drive and when moved further to the right displaces the ring gear to cause a conical surface 25 in the hub shell 1 to withdraw pawls 28 from teeth 21 in the hub shell to establish low ratio, which is transmitted from the carrier to the hub shell through pawls 17, and in which a member 16 is moved leftwardly by a screw connection 54 to expand a brake element 61 in response to back pedalling, the feet 29 of the pawls 28 are mounted in circumferentially elongated recesses 32 in a part 27 of the ring gear to provide lost motion to ensure release of the brake on resumption of forward pedalling after braking. When the hub shell 1 rotates clockwise, as seen in Fig. 2, relatively to the part 27 each pawl 28 is moved from a position in contact with a driving surface 33 of the recess 32 to a position in contact with an idling surface 34, this movement being assisted by the formation of the surface 34 at a lesser radius from the centre M of the part 27 than the surface 33, and also by the action of a spring ring 65 on the base 67 of a groove 66 in the pawl, this ring also acting to swing the tip 29b of the pawl outwardly.
Patent GB-1103548-A (GB)
Title: Magnetically operated electric switches
Inventor: MCNAMARA JAMES
IPC: G06K7/08
Filed: 1964-04-01
Abstract: 1,103,548. Magnetic switches. AVERYHARDOLL Ltd., and SPERRY GYROSCOPE CO. Ltd. 27 May, 1965 [1 April, 1964], No. 13374/64. Heading HlN. Sealed magnetic contact devices 5 are arranged in rows and selectively operated when a " key " containing magnetic inserts is placed in a slot 10 so that the inserts carry the flux from corresponding permanent magnets 8 to the contact devices. Different keys operate different sets of contacts to control the petrol supply to tankers and the keys may also be recessed to operate mechanical contacts such as micro-switches.
Patent GB-1511041-A (GB)
Title: Fm-detector
IPC: H03D3/00
Filed: 1975-04-02
Abstract: 1511041 FM/AM demodulators; FM/AM receivers GENERAL ELECTRIC CO 2 April 1975 [4 April 1974] 13415/75 Headings H3A, H3T and H3R An FM demodulator for use in a combined FM/AM receiver and introducing minimum differential delay between its inputs connected to receive the FM signal directly and via a network 18 producing a phase shift of an odd multiple of 90 degrees at the carrier frequency and its output comprises a combination network Q 1 , Q 2  of the "pass the most positive input signal" type responsive to the direct and phase shifted signals to produce pulses of variable width which are applied to an integrator 23, 24 via a symmetrical limiter or zero crossing detector Q 8 -Q 10 . A switch 26 enables selection of FM or AM operation. In case of AM demodulation, two signals in antiphase are applied to Q 1 , Q 2  by network 19 and AM demodulation is achieved by full wave rectification in the peak detection mode. The demodulated outputs are also fed back via a current source arrangement Q 15 -Q 17  to provide AGC or AFC control. Q 17  is operational only for FM operation. The quadrature phase shift for FM operation may be provided by a surface acoustic wave delay line or an untuned primarytuned secondary network instead of by network 18. References are made to Specification 1,503,171, 1,503,172 and 1,503,173 dealing with a similar AM/FM radio receiver arrangement.
Patent GB-573410-A (GB)
Title: An improved manufacture of refractories
Filed: 1943-08-18
Abstract: Fluorspar, in amount equal to 1-10 per cent, is added to refractory ramming or trowelling mixtures containing over 65 per cent of magnesia and bonded with sodium silicate in order to correct the effect of the silica in lowering the melting-point, the fluorspar being easily dispersed through the mass at firing temperature, the fluorine being finally eliminated, and the calcium uniting with the silica to produce a refractory silicate. The amount of fluorspar to be added is calculated from the formula 78(2x - y) where x and y are the molecular equivalents of silica and calcium oxide in the final product.  When magnesia clinkers are used in the preparation of the refractory, they are stabilized against hydration by the addition of small amounts of iron oxide or chrome ore and burning at high temperatures (3000 DEG  F. or over), and against inversion of the dicalcium silicate therein by incorporation of chromates, borates, or phosphates, preferably a borate, sufficient to provide a content of 0.06 per cent boron trioxide in the finished clinker, added in the form of ragonite, ulexite, colemanite or boric acid.  The mixture is prepared for use by mixing with 10-11 per cent of water and is stabilized during drying by the addition of 1-2 per cent of sodium carbonate.  According to examples: (a) a ramming-mixture is formed from magnesium clinker, sodium silicate, sodium carbonate, and fluorspar, with or without a small amount of colemanite; (b) a plastic mixture for tap-holes and lining spouts and runners is prepared from magnesium clinker, sodium silicate, sodium carbonate, trisodium phosphate, ball clay, and fluorspar.
Patent GB-986384-A (GB)
Title: Improvements in or relating to rotary electric machines
Inventor: RAWCLIFFE GORDON HINDLE
IPC: H02K3/28
Filed: 1961-04-14
Abstract: 986,384. Winding layouts for dynamo-electric machines. NATIONAL RESEARCH DEVELOPMENT CORPORATION. April 12,1962 [April 14, 1961; March 6, 1962], Nos. 13500/61 and 8552/62. Heading H2A. In a machine in which pole-changing is effected by asymmetrical pole-amplitude modulation, i.e. one of the pole-numbers is a multiple of three, all the coils of all the phase windings are included in circuit for both the original and modulated pole-numbers, an uneven winding having an irregular number of coils per phase-band being used to provide a sinusoidal distribution of the pole amplitude for both pole-numbers instead of omitting coils in the modulated condition as in prior methods. The pole-pairs at one or at both ends of each half of each phase-winding have fewer coils than the pole-pairs at the centres thereof. The coil grouping sequence of phase winding A being symmetrical about the centre of each half phase-winding but the coil grouping sequences of the other phases being asymmetrical about the centre of each phase winding. In the modulated condition whole phase-bands are reversed. An 8-pole/6-pole machine having 72 slots is shown in Fig. 1, certain features of the winding being set out in table A2 (not shown) Phase A consists of a symmetrical arrangement of bands: 2-4-4-2 for each half of the machine, while phases B and C are unsymmetrical, i.e. 3-5-3-1 and 1-3-5-3 (i.e. the reverse sequence) respectively. The coil-span may be 12 or 13 slots to achieve different chording factors for the two pole-numbers. Details of layouts for machines with various slot and pole numbers are given. Specifications 900,600 and 926,101 are referred to.
Patent GB-543374-A (GB)
Title: Improvements in or relating to means for supplying heated air to furnace and the like fires
IPC: F23M7/00
Filed: 1940-08-27
Abstract: 543,374. Furnace doors. METCALFE, H. Aug. 27, 1940, No. 13503. [Class 51 (i)] In a furnace door of the kind provided with tortuous air-heating passages communicating with the atmosphere and with the furnace, a metal box 1 secured to the door 6 is provided with a vertical partition 8 dividing it into compartments 13, 14, the compartment 13 being open to the atmosphere through apertures 7 in the door 6 and communicating with the compartment 14 through apertures 17, 18 in the bottom 16 thereof. The compartment 14 is provided with horizontal baffles 19, 20 so that the air takes a tortuous course before escaping to the furnace through apertures 12. The partition 8 may be provided with ribs 15, studs or other projections. In the modification shown in Fig. 3, the air enters the outer compartment through apertures 31 in the door and passes downwardly to apertures 26, 27 at the bottom of the inner compartment and thence through a tortuous passage formed by baffles 23 to outlet apertures 25. Fig. 5 shows a further modification in which the door is provided with vertical slots 32 the lower parts of which are covered by a plate 34 having an aperture 37 communicating with the outer compartment 38 of the box which is of the same form as that shown in Figs. 1 and 2.
Patent GB-135410-A (GB)
IPC: F41A35/02
Abstract: 135,410. Taylor, L. B. March 27, 1919. B r e e c h actions, drop-down barrel.-A detachable cover-plate for the lock mechanism is so constructed that its under or outer face a is smooth. The plate may have lugs a<2> on its rear edge, and a slidable catch c projecting from its front edge for attaching it to the gun body. Specification 23088/08 is referred to.
Patent GB-135436-A (GB)
IPC: B65D67/02
Abstract: 135,436. Beaver, L. H. May 31, 1919. Fittings, internal.-A device for packing eggs or other fragile articles comprises a base 2 to which are attached a number of resilient strips 1 which enclose a space approximating to the shape of an egg or other article, lengths of elastic material 5, located on the inside of the resilient strips, being attached to the free ends of the strips and to the base. The free ends of the strips 1 may be enclosed by an elastic ring 6. A number of the devices may 'be arranged on a single base or tray adapted to slide within a casing.
Patent GB-567928-A (GB)
Title: A device for removing stones from fruit
IPC: A47J23/00
Filed: 1943-08-20
Abstract: 567,928. Removing stones from fruits. MILLARD BROS., Ltd., and BATER, C. C. Aug. 20, 1943, No. 13586. [Class 28 (ii)] A punch b<2> ejects the stone from a plum &c. which rests in an oval hole d formed in the end of a pivoted arm a, the end being split into parts a', a<2> which can yield slightly so that the hole d can increase in area to accommodate larger fruits. The punch has a plurality of ribs b<3> so that they engage each side of the stone near its ridge. A spring stripper e is provided to prevent adhesion of the fruit to the punch.
Patent GB-1245918-A (GB)
Title: Improvements in or relating to heat exchangers
IPC: F28D7/06
Filed: 1970-03-20
Abstract: 1,245,918. Tubular heat exchangers; superheating steam. STAL-LAVAL APPARAT A.B. 20 March, 1970 [1 April, 1969], No. 13597/70. Headings F4A and F4S. In a heat exchanger comprising a casing 1 containing a plurality of U-shaped tubes 2 communicating with a chamber 3 and wherein a medium to be heated, e.g. steam from a high pressure turbine, passes over the tubes through which heating medium, e.g. fresh steam, flows in the direction of arrows 5, the casing 1 is cooled by removing heated medium by means of a pump 11 through conduits 12, 13 from the space 9 formed between the casing and an internal screen 8 and returning it to the lower part of the casing through a conduit 14 where it admixes with incoming relatively cold medium to be heated entering at inlet 6. Heated medium is withdrawn from the casing through an outlet 7. The incoming cold medium divides into two flows one of which passes into the space 9, the other passing upwardly over the tubes 2. The pump 11 is operated by a portion of the steam tapped from the chamber 3. Condensate and the remainder of the steam leaves through an opening 15.