baber/WOPTO huggingface dataset:
Patent GB-806357-A (GB)
Title: Improvements in or relating to ignition means for combustion chambers
Inventor: FERRIE FRANK GUILLAUME MICHEL
IPC: F23Q7/06
Filed: 1956-06-04
Abstract: 806,357. Electric igniters. SOC. NATIONALE D'ETUDE ET DE CONSTRUCTION DE MOTEURS D'AVIATION. June 4, 1956 [June 8, 1955], No. 17173/56. Class 75(3) [Also in Group XXVII] An ignition device for combustion chambers associated with an electrical source having a voltage which is liable to vary within a substantial range, comprises a metallic resistance wire wound over an insulating member and presenting at least two portions connectible to provide different resistance values, switching means being provided for connecting the portions with the source in accordance with the available voltage thereof in order to meet variations in the, voltage. The device is particularly applicable to turbo-jet units. As shown, a metallic resistance wire 1 is wound on an insulating support 2 of crossshape section. This wire may be fed with current by a conductor 7 and at an intermediate point by a conductor 8. A switch may supply current to either of the conductors. Alternatively, two sections of the resistance may operate separately. The plug is fitted with an insulating plate 5. Fuel may be discharge on to the resistance by starting injectors.
Patent GB-692868-A (GB)
Title: Improvements in or relating to universal joints
Inventor: WOOD KENNETH MAYNARD
IPC: F16D3/04
Filed: 1950-07-10
Abstract: 692,868. Universal joint. KENWOOD MANUFACTURING CO., Ltd. July 9,1951 [July 10, 1950], No. 17184/50. Class 80 (ii). A universal joint, particularly for food mixers, comprises driving and driven shafts a, g, a cross-pin b in the driving shaft engaging oppositely inclined helical slots c in a sleeve d pivoted on a pin e in the driven shaft. Specification 664,634, [Group II], is referred to.
Patent GB-273718-A (GB)
Title: Improvements in or relating to the production of high-percent nitric acid
IPC: C01B21/26
Filed: 1927-06-28
Abstract: 273,718. Caro, N., and Frank, A. R. June 29, 1926, [Convention date]. Catalytic apparatus; nitrogen oxides, catalytic production of by combustion of ammonia.-In the manufacture of nitric acid of high concentration by the catalytic combustion of mixtures of ammonia with air or oxygen, the heat of reaction is absorbed by arranging in advance of the catalyst a layer of liquid through which the reaction mixture is bubbled. The preferred liquid is water, to which may be added substances suitable for purifying the gas mixture or substances serving to modify the vapour pressure. Alternatively, the liquid may be a solution of ammonia or an aqueous solution of ammonium salts capable of liberating ammonia under the action of steam or added alkalies, in any of which events the proportion of ammonia in the gas mixture may be correspondingly reduced. A further alternative consists in the use of a non-aqueous liquid the vapours of which do not affect the process. In an example, a. chamber containing a platinum network is provided, at a few centimetres below the network, with a perforated sheet of metal on which rests a layer of water, the perforations in the sheet of metal being sufficiently fine to prevent the passage of water, at least when the gas current is passing. A non-catalytic wire netting may be arranged between the platinum and the metal sheet to intercept spray &c. The reaction gases, which may contain 20 per cent or more of ammonia, are passed upwardly through the chamber, and the heat of reaction is absorbed by the layer of water, water being supplied from outside the chamber so as to maintain the layer at a constant level. The combustion may be effected under pressure, and the reaction chamber may be cooled also in known ways, such as by external cooling or by internal cooling devices on the nitrogen oxide side of the catalyst. Specification 205,856 is referred to.
Patent GB-595530-A (GB)
Title: Improvements in pistons
IPC: F02F3/00
Filed: 1945-07-05
Abstract: 595,530. Pistons. JOHANSSON, J. E., and AKTIEBOLAGET GOTAVERKEN. July 5, 1945, No. 17243. [Class 122 (i)] In a piston for internal combustion engines and compressors comprising a skirt 1, preferably of light metal, and a head 2 fastened to the skirt and provided with at least one axial projection 8 which engages a corresponding recess in said skirt and which consists of a material having a smaller coefficient of expansion than the' material of the skirt, resilient members 14 are provided to bridge the clearance between the opposite faces of the projection and recess, thereby obtaining a heat transmitting connection between the piston head and skirt. The resilient members may consist of rings inserted in grooves in the projection, or in the skirt, or corrugated leaf springs.
Patent GB-707982-A (GB)
Title: A semi-chemical pulp and the manufacture thereof
IPC: D21C3/06
Filed: 1950-07-10
Abstract: In the preparation of fibrous cellulosic pulp from hard woods and stem and other yearly plants, the raw material is soaked for 2-12 hours in an aqueous liquor containing SO2 in a total amount insufficient to sulphonate and remove completely all the lignin, the amount being from 60 to 100 kg. per metric ton of air-dry raw material, and an alkali in an amount sufficient to give to the liquor a pH of 2.5-4.5, the liquor having a total SO2 content of 0.4-1.4 per cent. by weight of the liquid. The temperature of the material is gradually raised during the soaking period to 110 DEG -135 DEG C. and then the material is cooked at a temperature within this latter range for 2-12 hours, the duration of the soaking period and the temperature to which the material is raised being chosen according to the nature of the material so as to effect sulphonation of the desired quantity of lignin in the middle lamella of the raw material, and the cooking being stopped when the material can readily be defibrated and before the total SO2 content of the liquor has fallen to below 0.1 per cent.
Patent GB-254877-A (GB)
Title: Improvements in or relating to split set collars for shafts and the like
IPC: B21D53/00
Filed: 1925-07-07
Abstract: 254,877. Trier, V. A. July 7, 1925. Shafts and shafting. - Split collars for shafts and other cylindrical or tubular members are made by stamping from sheet metal two rings having semicircular ends A joined by straight sides B, bending the ends A into parallel planes to form channelshaped members, and bolting the two members together around a shaft &c. C, as shown in Fig. 3. Channel-shaped stiffeners E are preferably provided at one or both ends of each half-collar, these stiffeners serving also to engage and hold the bolt-heads D' while screwing up the nuts D<2>, but the heads D<1> may alternatively be engaged by the sides of the collar. The collar halves may engage one another at each end by a tongue and recess (not shown) stamped out of the straight parts B.
Patent GB-409525-A (GB)
Title: Improvements in and relating to the joining and coating of cast-iron and to the filling of blow-holes, scores, cracks and fissures therein
IPC: B23K35/36
Filed: 1933-06-19
Abstract: A welding rod of cast-iron contains 3.5 per cent of carbon, 0.5 per cent of manganese, 3.3 per cent of silicon, and 0.4 per cent of phosphorus, and preferably comprises a graphite-eutectic of cast-iron.  A flux used in conjunction therewith comprises pure iron in powdered form, boric acid, potassium nitrate, and potassium carbonate.
Patent GB-482029-A (GB)
Title: Improvements relating to high pressure metallic vapour arc lamps and to the manufacture of such lamps
IPC: H01J61/82
Filed: 1937-06-23
Abstract: 482,029. Discharge lamps. EGYESULT IZZOLAMFA ES VILLAMOSSAGI R. T. June 23, 1937, No. 17470. Convention date, June 23, 1936. [Class 39 (i)] The electrodes of a high pressure lamp are so mounted that the lines joining any point of the arc with the lead-in seals enclose an angle less than 180‹ whilst the line joining the electrodes lies wholly in the gas space, and the arc length is less than 8 mms. The invention is applicable to lamps having a metal vapour filling with pressures of more than five, or ten atmospheres. The auxiliary gas filling may be krypton or xenon or a mixture and may have a pressure of from 2 to 100 mms., e.g. 25 to 40 mms., and the main filling may be mercury, cadmium or zinc, or a mixture. The electrodes and their leads may be parallel and run towards the cap of an outer bulb. The inner bulb may be ellipsoidal. The consumption may be greater than 10 or 15 watts per mm., and lamps consuming as low as 15 watts may be made. An incandescent filament, in series with the discharge, may be mounted in the outer envelope.
Patent GB-1348269-A (GB)
Title: Device for the opening of foil-sealed containers
IPC: B26D1/06
Filed: 1971-05-27
Abstract: 1348269 Opening containers SCHWEIZERISCHE ALUMINIUM AG 27 May 1971 [5 June 1970] 17600/71 Heading B8D A device for cutting open non-circular, foilclosed containers 51 comprises transverselymovable knife holders 13 and 15 rotatablymounted on an axially-movable rod 5 to permit lowering of the holders to pierce the foil closure and rotation of the holders about the periphery of a cam 11 having a profile corresponding to the shape of the closure so that the foil is cut adjacent the container rim, and a suction cup 53 adapted to hold the foil during the cutting operation and to lift the foil on raising of the rod at the completion of the cutting operation. As shown, the holders are slidably mounted on rods 31 and 33 extending from a bush at the end of the rod 5 and are held against the cam, which is interchangeable to accommodate different closure shapes, by springs 35-38. The rod is constrained for axial movement and is biased to the raised position by a spring 7. In a modification, Figs. 3 (not shown), the axial and rotational movement of the knife-holders is effected by dog 73 on a bush 71 engaging in a cam-track groove 77 provided in a bush 75 held in the arm of a support member 63. The device may be pneumatically-, hydraulically- or electrically-driven.
Patent GB-117878-A (GB)
Title: Improvements in or relating to Friction Gearing.
Inventor: KEITH JAMES
IPC: F16L13/00
Filed: 1917-11-30
Abstract: 117,878. Keith, J., and Keith, G. Nov. 30, 1917. Friction gearing.-Relates to hand-power speedmultiplying gear for driving fans &c. It comprises an outer race B and a fan &c. spindle A, between which are interposed pairs of frictionrollers C, D, some of which are mounted on eccentric bushes and are automatically jammed into engagement with a force increasing with the load. In the form shown in Fig. 1, the race B is rotated by hand, and the rollers C, D, which are on relatively fixed axes d, f are pressed between A and B by a spring k acting through links g on the rollers D and the rollers C are mounted on eccentric bushes e to cause them to jam. In a modification, a spring device similar to k is arranged within the race B. Annular grooves may be formed inside the race B to facilitate the squeezing out of the oil film from between the rollers and the race, and this race may be provided with side-flanges.
Patent GB-859604-A (GB)
Title: Improvements in or relating to high frequency apparatus
Inventor: SCHELISCH ERNST FRIEDRICH
IPC: H01P1/365
Filed: 1958-06-03
Abstract: 859,604. Non-reciprocal transmission devices. MARCONI'S WIRELESS TELEGRAPH CO. Ltd. March 25,1959 [June 3, 1958], No. 17757/58. Class 40(8). H.F. apparatus comprises a non-linear device 1, e.g. a crystal mixer or rectifier, an H.F. transmission line 2, e.g. a waveguide or a coaxial line, connected to the device 1, and, in the run of the line 2 and adjacent the device 1, a section 3 of non-reciprocal transmission line constructed to absorb at least one harmonic, preferably the second, of the high frequency used. When the transmission line 2 is a waveguide the section 3 is constituted by a length of waveguide 2<SP>1</SP> having ferrite inserts 31 which are fixed in predetermined positions therein and magnetically polarized by a predetermined magnetic field applied by the magnets 32.
Patent GB-241310-A (GB)
Title: Improvements in or relating to electric switches, relays and the like
IPC: H01H50/34
Filed: 1924-07-26
Abstract: 241,310. Igranic Electric Co., Ltd., and Spaink, J. H. Abbink-. July 26, 1924. Electromagnetic interrupters. - A relaying device which responds to small increases and decreases of applied current, so that it assumes the off position with substantially the same current as that which causes it to close, consists of a contact-member of the vibrating type which in closing short circuits its operating winding wholly or in part in conjunction with a slowacting relay. Back contacts on the contactmember make and break a short circuit on the operating winding of the slow-acting relay which closes its circuit in these conditions. As shown in Fig. 2, the source L<1>, L<2> supplies the livepart operating winding 1<a>, 1<b> which is shunted by a condenser and, when the applied voltage increases slightly, the contact-member 2 is attracted from the contact 5 to the contact 6 shortcircuiting the whole of the operating winding, or, as shown in the Figure, the part 1<a> only. The consequent continuous make-and-break of the contact 5 allows sufficient energization of the coil 3 to hold the relay 4 in the off position. When the voltage falls slightly the. trembler ceases to vibrate, the coil 3 is effectively short-circuited and the relay 4 closed. The, short-circuiting of the portion 1<a> for the operating coil may leave in action a portion 1<b> inadequate to hold the trembler on the contact 6 but adequate to prevent it returning completely to the contact 5 so that the trembler vibrates until the applied voltage of the supply is reduced whereupon it contacts with 5. The circuit arrangements are as shown, resistances 7, 10 and inductance 8 short-circuited by a condenser 9 being employed. A short-circuited winding 12 may be arranged on the core. In the constructional form shown in Fig. 4, the core 13 carries the operating winding 1 and the short-circuiting winding 12 acting on the armature 16 pivoted in a bifurcated part of the frame 14 and carrying a blade contact 2 moving between adjustable front and back contacts 6, 5. The blade contact is biassed to the back contacts by a spring 24 initially adjustable by the threaded sleeve and by a spring 24 initially adjustable by the threaded sleeve and stem and finally adjustable, after the cover has been added by external rotation of the screwed pin 28 which acts through a bell-crank lever 27 on the spring.
Patent GB-1322489-A (GB)
Title: Pulse transformers
IPC: H01F30/16
Filed: 1971-05-28
Abstract: 1322489 Transformers BROWN BOVERI & CO Ltd 28 May 1971 [20 July 1970] 17891/71 Heading HIT A pulse transformer which is used to control a chain of serially connected thyristors of a controlled thyristor rectifier, comprises a toroid core on which are wound at least two groups of secondary windings, each winding being used to control a thyristor, and at least two screens which screen the windings from the core such that the stray capacitance between the windings and the core is compensated by the capacitance between one winding and the first screen C 1n  and the capacitance between the same winding and the second screen C 2n  fulfilling the condition where n= 1, 2, 3 ...m. In Fig. 3 two groups of windings and two screens 3 and 4 are provided on an iron core 5. One screen is connected to one end of the thyristor chain and the other screen is connected to the mid-point. Further screens are described in other embodiments.
Patent GB-624161-A (GB)
Title: Improvements in or relating to electric ribbon cable
IPC: H01B7/08
Filed: 1947-07-08
Abstract: 624,161. Cables. SIEMENS BROS. & CO., Ltd., GEE, F. J., and HARDMAN, T. K. July 8, 1947, No. 17981. [Class 36] A cable for use in telephone systems for multiplying contacts of automatic selector switches consists of a number of conductors 1 each provided with an insulating covering 2 of incombustible plastic material such as polyvinyl chloride and arranged in zig-zag formation with projecting loops 3 at one side of the cable. Adjacent conductors may overlap twice between successive loops as shown in Fig. 5. The conductors are sandwiched between tapes 7 on a thermoplastic material. The tapes are provided with a layer of adhesive on their inner surfaces and are applied to the conductors with heat and pressure which may be sufficient to force the tapes between the conductors. The side of the cable opposite the loops may be closed by a separate piece of material 10 folded over the tapes or one of the tapes may be of sufficient width to be folded over the other. Alternatively, instead of two tapes, a single tape of sufficient width to be folded over both sides of the cable may be used.
Patent GB-223182-A (GB)
Title: Improvements in or relating to the supply of auxiliary air to internal combustion engines
IPC: F02D9/00
Filed: 1924-07-29
Abstract: 223,182. Moss, A. H. July 29, 1924. Induction pipes, fittings for.-In an extra air-valve device of the kind provided with a recess 4 surrounding the induction pipe, the air is admitted from the recess to the induetion passage through the coils of an annular spring 10. The air is admitted by a Bowden or suction - actuated valve and is deflected into the recess or the interior of the spring by a plate 13. A primary tap as described in Specification 221,157 may be provided.
Patent GB-690157-A (GB)
Title: Improvements in draw bar devices for tractors
Inventor: BONJOUR MAURICE
IPC: B60D1/155
Filed: 1951-07-31
Abstract: 690,157. Draw-gear for vehicles. ATELIERS DE CONSTRUCTIONS MECANIQUES DE VEVEY SOC. ANON. July 31, 1951, No. 18069/51. Class 103 (v). A draught device comprises a transverse member 1 connected to the tractor by means of a pair of arms 2 of adjustable length. The arms are held in their adjusted positions by means of the clamping screw which wedges the part 2a into the channel-section members 2. Two such pairs of adjustable arms may be provided to connect a vertically-disposed frame to the tractor. Swiss Specification 191,712 is referred to.
Patent GB-292607-A (GB)
Title: Improvements in or relating to measuring devices for gases or the like
IPC: G01N7/10
Filed: 1928-06-22
Abstract: 292,607. Electrolux, Ltd., (Assignees of Platen-Munters Refrigerating System Aktiebolag). June 23, 1927, [Convention date]. Gas analysis; diffusion apparatus for gases. - In an apparatus for indicating the composition of a gas wherein the gas is diffused through a porous member into a measuring chamber, the gas so diffused is - exposed to the action of an absorption medium having a constant absorption .capacity such as a liquid of constant composition passing in con. tinuous flow. The apparatus shown comprises a diffusion vessel formed of three discs 5- - 7 connected together in a fluid-tight manner and having formed therein a cavity 8 communicating on one side through porous partitions 10, 18 with cavities 9, 17, and on the other side through a porous partition 27 with a cavity 30. Absorptive liquid such as a solution of caustic potash is caused to flow continuously from a Marriott's bottle 3 into the cavity 9 through the partition 10, thence in a thin film over the surface of the cavity 8 and out through the partition 18 and cavity 17 to a receptacle 4. The gas to be heated is admitted to the cavity 30 through an inlet 32 and passes out through an outlet 34. The reduction of pressure caused by the absorption of constituents from the gas passing through the partition 27 into the cavity 8 is measured by the manometer device 39, 41. Ventilating salves 16, 22 are provided, for the cavities 9, 17 respectively, for the removal of air.
Patent GB-408204-A (GB)
Title: Improvements in or relating to resilient mountings
IPC: F16F3/087
Filed: 1932-06-27
Abstract: 408,204. Resilient mountings. FIRESTONE TYRE & RUBBER CO., Ltd., Great West Road, Brentford, Middlesex.-(Assignees of Saurer, C.; 584, Vanita Avenue, Akron, Ohio, U.S.A.) June 27, 1932, No. 18181. Convention date, July 17, 1931. [Class 108 (iii).] A resilient mounting includes a concavo-convex body of rubber 20 provided with a peripheral facing of metal 23 adapted to engage either a supporting or supported surface. In one form, the supported member 11 is provided with a recess 13 for the mounting which is provided with a wear-plate 24 moulded into its structure and is secured in position by a bolt 15 the head 16 of which is secured, e.g. by welding to a support 10. The bolt has a thread 17 of reduced diameter thus providing a seat for a washer 29 between which and the member 11 is interposed an initially compressed rubber boss 21 provided with wear-plates 25, 26 and a barrel-shaped, when unloaded, bore 28. The concave side of the body may be in sealing contact with the member 11 to provide an air cushion and it may be provided with an annular axial boss or a plurality of bosses. The facing 23 may be vulcanized to the body which may be imperforate in which case wear-plates carrying studs are moulded onto the body.
Patent GB-1428882-A (GB)
Title: Partition between a hydrodynamic unit and a mechanical part of  change-speed gearing
IPC: F16D33/00
Filed: 1974-04-25
Abstract: 1428882 Change-speed gear DAIMLERBENZ AG 25 April 1974 [11 May 1973] 18183/74 Heading F2D A partition 10 separating a hydrodynamic unit 13 from a power-operated change-speed gearing unit 14 is divided substantially on its median plane 17 into parts 15, 16 secured together in a fluid-tight manner, e.g. by adhesive and/or bolts, screws &c., a pump 22 driven by the hydrodynamic unit is accommodated in both parts 15, 16, and all fluid passageways 18 in the partition extend parallel to the plane in one at least of the joint faces between the parts. Openings 20 connect the passageways with adjacent housing parts. As shown, the partition lies between housing 11, 12 for the two units, but in a modification it is secured in a common housing for the two units, and in another modification one of the two parts of the partition is constituted by an integral part of the housing for the hydrodynamic unit.
Patent GB-867677-A (GB)
Title: Improvements in or relating to photo-multiplier control systems
IPC: B65H63/06
Filed: 1959-05-28
Abstract: 867,677. Automatic current control systems. TELEPHONICS CORPORATION. May 28, 1959 [May 28, 1958], No. 18241/59. Class 38 (4). In an automatic control system for a photomultiplier the dynode voltages are controlled by varying a resistance in series with the supply to a voltage divider connected to the dynodes so as to compensate for long-term variation in the output current. As shown, an article to be tested interrupts a light beam from a lamp 21 to a cathode 13 of a photo-multiplier 10 and an output current, modulated with short-term variations representative of defects in the article, flows through a resistor 19 connected to an anode 11. The voltage across the resistor 19 via a resistance-capacity filter 28 on a triode 25 is applied to the grid of a triode 35, the anode of which is directly coupled to the control grid of a series regulating valve 39 varying the voltage applied to a dynode potential divider, comprising resistors 14, from a supply 17 so as to maintain the long-term value of the output current constant. The gain of the triode amplifier 35 is controlled by a rheostat 51 and the cathode bias is derived across a resistor 50 supplied with a constant potential through a series regulating valve 49.
Patent GB-586694-A (GB)
Title: Improvements in or relating to cartons or like containers suitable for cigarettes orcigars
IPC: A24F27/12
Filed: 1944-09-25
Abstract: 586,694. Match strips for cigarette &c. cartons. LISTER, G. D. Sept. 25, 1944, Nos. 18292 and 19133. [Classes 18 and 94 (i)] A strip of matches adapted to be placed within a cigarette or cigar carton consisting of an open-ended outer casing and a sliding tray comprises matches 1 mounted on a cardboard base 2 by a piece of fabric 4, wings 5, 6 being foldable to form sides on the slide and an extension 7 on one or both sides being folded behind the slide and secured if desired by adhesive. The fabric 4 may also be secured by adhesive to flap 10 of the slide. The base 2 may be foldable down the middle to form a book of matches usable independently.