baber/WOPTO huggingface dataset:
Patent GB-1044291-A (GB)
Title: Improvements in and relating to the combustion of organic matter in oven fume
Inventor: MATHEWS AMPHLETT CHRISTOPHER B
IPC: F23G7/06
Filed: 1962-03-26
Abstract: 1,044,291. Combustion chambers; consuming noxious vapours. COATES BROTHERS & CO. Ltd. March 26, 1963 [March 26, 1962], No. 11472/62. Heading F4B. A combustion chamber, particularly for the noxious vapours given off in an enamelling oven, is of tubular form with an obstruction near the entry end to direct gases over the walls and a burner directing a flame into the turbulent zone behind the obstruction. The obstruction may be a cylinder mounted across a rectangular duct, or a sphere in an enlarged part of a duct. In a stoving oven, Fig. 4, part of the oven atmosphere is fed through a combustion chamber 1 with an obstruction 7 and burner 8 adjusted so that the flame reaches the sphere 7. Exhaust gases from the chamber 1 are partly fed to atmosphere and partly mixed with the oven gases in a chamber 13 of similar form to the combustion chamber. The hot gases from the combustion chamber may be used in a heat exchanger. The spherical obstruction 7 may be vaned to swirl the gases in the turbulent zone. A nozzle 37 extending through a spherical obstruction 27 and carrying a secondary obstruction 32 in the form of a cone or disc may replace the burner 30, Fig. 7. If the flame is delivered in the direction of flow, the combustion chamber is of Venturi form. The combustion chambers may be mounted above the roof of a stoving oven, heat exchangers or mixing chambers being located in the hollow oven walls, Figs. 5 and 6 (not shown).
Patent GB-749217-A (GB)
Title: Improvements in and relating to magnetic amplifier circuits
IPC: H03F9/04
Filed: 1954-04-21
Abstract: 749,217. Magnetic amplifiers. GENERAL ELECTRIC CO.. April 21, 1954 [April 23, 1953], No. 11523/54. Class 40 (4). In a magnetic amplifier carrying a pair of load windings 14, 15 which are connected via rectifiers 20, 21 to an A.C. supply 18, degenerative feed-back is provided by a variable impedance 24 connected between the junction points of the load windings and the rectifiers of the respective branches and a separate winding is fed with D.C. to aid or oppose the flux produced by the load windings in accordance with the polarity of the signal. The impedance 24 provides a path from the branch which is conducting, to that which is not, to permit leakage current to flow through the latter and create a degenerative-flux. The directions of the normal fluxes shown by arrows 22, 23 are such that they have a common direction through the centre limb. The invention as applied to amplifiers having D.C. outputs and to amplifiers employing a full-wave bridge with a feed-back winding and to those employing a centre tapped transformer is described with reference to Figs. 2, 4 and 5, respectively (not shown). The performance of such amplifiers is described with reference to a control current/ output voltage characteristic, Fig. 3 (not shown). A ratio of 50 to 1 is suggested for the impedance ratio of the degenerative impedance to the load impedance.
Patent GB-256310-A (GB)
Title: Improvements in or relating to banjos and similar musical instruments
IPC: G10D1/10
Filed: 1925-05-04
Abstract: 256,310. Greenop, S. N. May 4, 1925. Banjoes &c.-In banjoes &c. having an outer hoop 1 and a dished metal reflecting-plate 2 with its base towards the back of the instrument, the plate 2 is of approximately the same depth as the hoop 1, contains the vellum-carrying parts, and is secured to the hoop 1 by a flange 3. The vellum 7 is stretched over the inturned edge of a metal inner hoop 5 by hooks 10 engaging the ring 13, the lower ends of the hooks passing through a. flange 8 on the inner hoop 5, distance-pieces 9 which may be of various shapes, and the plate 2. The sound passes between the distance-pieces 9 and is deflected forward by the plate 2.
Patent GB-436730-A (GB)
Title: Improvements in or relating to flexible tubing
IPC: B29D23/00
Filed: 1934-04-17
Abstract: 436,730. Rubber &c. tubes. BROSTROM, F. V., 16, Feltham Avenue, East Molesey, Surrey, and DOHM, S. A., 3, Gressenhall Road, London. April 17, 1934, No. 11550. [Class 99 (ii)] A flexible tube 1 of rubber &c. is formed internally with one or more longitudinallyextending inwardlyprojecting ribs 2 so as to ensure the passage of fluid when the tube is bent or trodden on. The ribs, which are preferably of rectangular crosssection, have a minimum width greater than the thickness of the tube wall, a height less than the normal diameter of the bore of the tube, and are integral with the tube wall over the whole area of their bases.
Patent GB-1182683-A (GB)
Title: Electrographic Apparatus
IPC: G06K15/14
Filed: 1967-03-13
Abstract: 1,182,683. Selective printing. RANK XEROX Ltd. 13 March, 1967 [17 March, 1966], No. 11581/67. Heading B6F. [Also in Division G2] The subject-matter of this specification is included in Specification 1,182,684, but the claims relate to an apparatus for forming a latent electrostatic image on a web having at least one shaped electrode on a first side of the web, a flat surfaced backing electrode on the other side of the web opposite the shaped electrode, means to press the electrodes sufficiently close together to press against opposite sides of the recording web, means for applying an electrical recording pulse across opposite electrodes while the web is stationary, and means to reopen a gap between the opposite electrodes after the pulse, such that the web can be advanced by web feeding means.
Patent GB-436734-A (GB)
Title: Improvements in and relating to electrical amplifiers, such as may be used for example in television
IPC: H03F3/32
Filed: 1934-04-17
Abstract: 436,734. Valve amplifying - circuits. BLUMLEIN, A. D., 7, Courtfield Gardens, Ealing, and BROWNE, C. O., 29, Monks Drive, West Acton, both in London. April 17, 1934, No. 11602. [Class 40 (v)] An amplifier for handling a wide band of frequencies extending substantially to zero frequency, such as arise in a light-sensitive cell in a television system, the cell circuit is arranged to discriminate against high frequencies, and the amplifier circuit to discriminate against low frequencies, the several stages of the amplifier favouring different bands of the higher frequencies. In this way, battery noises and like low-frequency components are not unduly amplified. As shown, the resistance 3 connected in series with the cell 1 is of a high value, e.g. 5 megohms, so that the higher frequencies are shunted by the inherent capacities across the resistance and are not so effective on the grid of the valve 6 as are the lower frequencies. The valves 6, 11, 13, 14 are directly coupled to each other by potentiometers 7, 9, 12, the portions 7 being in the plate circuits of the valves. and the portions 12 in the grid circuits. The intervening portions 9 are shunted by condensers 10 of successively smaller values along the chain with the effect that successive stages favour successively higher bands of frequencies. Very low frequencies are not amplified in the valves 6, 11, 13, but only by the final stage or stages 14. The last intervalve coupling may include inductance coils 15, 16 which tend to intensify the discrimination in favour of the highest frequencies. Coils 8 may also be provided in the earlier stages in series with the condenser-shunted resistance 9. Parallel-resonant circuits tuned to a frequency higher than the frequency to be amplified may be connected across the anodecathode paths of the valves. The valves may have guard rings to prevent leakage between plate and grid ; and similar rings may be provided in the cell 1. In a modification, the high resistance 3 is shunted by a small capacity (À05 microfarad), and a low resistance (5000 ohms.) is connected in series with the combination.
Patent GB-1109332-A (GB)
Title: Gas-filled overvoltage arrester for telecommunication installations
IPC: H01J61/067
Filed: 1966-03-17
Abstract: 1,109,332. Cold-cathode tubes. CERBERUS A.G. 17 March, 1966 [17 March, 1965], No. 11688/66. Heading H1D. A gas-filled overvoltage protector tube includes a pair of opposed planar electrodes each of which has rounded edges, a thickness of not less than 1 mm., and major faces each having an area not less than 30 (mm.)<SP>2</SP>, the spacing between the electrodes, and their thermal capacity, being such as to ensure that, when the tube is loaded at 1000 watts with 10 amps r.m.s. current, a fusion bead forms at the surface of the electrodes to produce a shortcircuit prior to destruction of the hard glass envelope of the tube. Each electrode is preferably of nickel coated with calcium oxide and has a channel 3a, Fig. 1, in its rear face within which its lead-in wire 3 is staked (Fig. 3, not shown) and brazed. The filling is a mixture of argon, hydrogen and tritium at 80 torr. The tube has a polyethylene clip 12, Fig. 4, mounted on the exhaust tip end of the tube, two nickel channel members 10 extending along opposite sides of the tube, each having one end hooked in the clip and the other end spot-welded to the externally extending portion 7 of a respective lead-in pin, whereby the tube may be readily introduced into the contact spring fixture of a fuse-box.
Patent GB-757328-A (GB)
Title: Improvements in or relating to forming tools for use in the manufacture of components from sheet material
Inventor: REES JOHN
IPC: B21D37/20
Filed: 1953-04-28
Abstract: 757,328. Stamping and forging dies. BRISTOL AEROPLANE CO., Ltd. April 23, 1954 [April 28, 1953], No. 11761/53. Class 83 (4). [Also in Group V] A forming tool, e.g. a beating block, rubber press tool or drop-hammer tool, for use in manufacturing sheet metal components comprises a moulded core of resin plus filler and a moulded-on sur face layer also of resin plusfiller. Fig. 3 shows a beating block for a metal duct bend comprising a core 13 made from a plastic mass comprising polyester resin and a filler, e.g. glass fibre, asbestos flock, wood sawdust or sand, and a surface layer 14 made from woven glass fibre (or pieces of felt or thin asbestos millboard) impregnated with polyester or epoxy resin. Adhesion between the core and the surface layer may be facilitated by an interlayer of resin. Fig. 4 shows a modified beating block, the corners 24, 25 only being covered with resin-impregnated glass cloth pieces and the flat surfaces 30, 31, 32 being covered with loose glass or asbestos fibre bonded with resin. Specification 736,004 is referred to.
Patent GB-779154-A (GB)
Title: Improvements in or relating to magnetic reproducing head
IPC: G11B5/335
Filed: 1954-04-23
Abstract: 779,154. Magnetic reproducing apparatus. ARMOUR RESEARCH FOUNDATION OF ILLINOIS INSTITUTE OF TECHNOLOGY. April 23, 1954 [Nov. 6, 1953], No. 11783/54. Class 40 (2). A laminated magnetic head having several non-magnetic gaps spaced side by side comprises L-shaped members 11a (11b, not shown), 12a, 12b with intermediate bridging strips 13, 14 carrying windings 18, 19. Copper and " Mumetal " (Registered Trade Mark) shields 20, 21, respectively are provided between adjacent gaps to prevent interference, and the shields 20 may also be provided at the outside of the head. A copper shim may be provided to form the gap 16. The signals may be amplitude modulated by connecting the output of a high-frequency oscillator to the windings 18, 19. The windings 18, 19 may comprise a pair of windings (see Fig. 8, not shown) in series aiding relationship, fed from the output of an oscillator, wound in bifilar manner with respect to a pair of windings connected in series opposing relationship, the output from which is connected to the input of a tuned amplifier, the output of which is fed to a phase modulator. An adjustable D.C. bias may be provided by a permanent magnet 35 having adjustable blocks 36, 37 of magnetic material close to the L-shaped members. In a modification, the D.C. bias may be provided by supplying D.C. to the windings.
Patent GB-610871-A (GB)
Title: Improvements in and relating to picking arrangements for looms
IPC: D03D43/00
Filed: 1946-04-17
Abstract: 610,871. Picking motion for drop box looms. SOC. ANON. A. SAURER. April 17, 1946, No. 11803. Convention date, July 24, 1945. [Class 142(iii)] The picking stick swings close to the back of the boxes 8 and is carried by links 21, 25 to give a straight-line motion to the picker 31 which is rigid with the stick and projects through a slot 33 in the box back; the picker is of double convex section where it passes through the slot A return spring 30 acts on the link 25 and buffers 36, 37 limit the stroke of the picker. The pivot 22 is mounted on an eccentric 23 for adjustment.
Patent GB-474055-A (GB)
Title: Improvements in means for effecting packing or sealing between two surfaces
IPC: F16J15/56
Filed: 1936-04-27
Abstract: 474,055. Piston, stuffing - box, and joint-making packing. ONIONS, J. H. April 27, 1936, No. 11875. [Classes 122 (i), 122 (iii), and 122 (v)] A packing for use in a shock-absorber comprises a soft rubber &c. ring 21, 24 accommodated in a groove in one member, e.g. a piston 13, to be sealed and compressed between the bottom of the groove and the other member, the width of the ring initially being less than that of the groove whereby fluid pressure has access to the space 22 between ring and groove. The groove may be arranged in the outer member 10. The ring 18, Fig. 2, is shown as applied to the cap 11 of a shock absorbing strut cylinder 10. Specifications 8149/95, [Class 122], 432,882, and 461,577 are referred to.
Patent GB-308101-A (GB)
Title: Improvements relating to shock absorbers for motor road vehicles
IPC: F16F7/04
Filed: 1928-04-23
Abstract: 308,101. Milner, C. C. April 23, 1928. Vibration - dampers. - Friction-disc apparatus for vehicles is provided with means for regulating the pressure between the elements consisting of an annular cylinder and piston arranged concentrically with the usual screw - adjusting means and supplied with liquid under pressure. The frictional apparatus consists of a central disc connected to one movable element and outer discs c connected to the other, frictional material being interposed between them, while pressure is applied by means of the spring washer b and the central bolt a. The usual tightening nut is replaced by a special nut d having a cylindrical outer surface on which is mounted a small annular cylinder e containing an annular piston f bearing against the spring washer b. Pressure liquid is supplied to the cylinder by a hand pump operated by the driver or by a mechanically-operated pump actuated by the engine. 'The nut d may be locked by a central screw h. Several dampers may be supplied with liquid from the same pump. A furnace gauge may be fitted.
Patent GB-1293282-A (GB)
Title: Disc brake with a wear alarm device
Inventor: IRIGUCHI KIYOSHI
IPC: F16D66/02
Filed: 1971-04-28
Abstract: 1293282 Wear indicators SUMITOMO ELECTRIC INDUSTRIES Ltd 28 April 1971 [19 June 1970] 11938/71 Heading F2E An opposed pad disc brake has an electrode 11 mounted on a backing plate 3a of one pad and perpendicular thereto, so as to extend over the outer periphery of the rotating disc 2 toward the other backing plate 3b or a metal abutment member on the backing plate, so that when the pads have worn to a predetermined limit, the electrode contacts the backing plate 3b or the abutment member to generate an electrical signal to indicate the pad wear. The electrode 11 is encased in an insulating sleeve 8 which is in turn held in a metal sleeve having a flange to abut the backing plate 3a and a screw thread to accept a nut 13 to enable easy mounting and dismounting of the electrode on and from the backing plate.
Patent GB-403559-A (GB)
Title: Improvements in or relating to electrical oscillation generators
IPC: H03B5/30
Filed: 1933-04-24
Abstract: 403,559. Tuning-forks. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London.-(Assignees of Norrman, E. B. ; 304, Rand Street, Camden, New Jersey, U.S.A.) April 24, 1933, No. 11954. Convention date, April 23, 1932. [Class 88 (ii).] A tuning-fork 30, 32 used to control a constantfrequency-valve-oscillator is constructed so that the thickness A of each of the tines is equal to the distance between them, as shown in Fig. 2, whilst the radii R, R1, R2 at the base have the values shown in Fig. 1.
Patent GB-527807-A (GB)
Title: Improvements in telescopic gas holders
IPC: F17B1/007
Filed: 1939-04-21
Abstract: 527,807. Gas holders. WALKER, Ltd., C. & W., and BEARD, G. F. H. April 21, 1939, No. 11972. [Class 54] A telescopic gas holder in which an inclined staircase 1 having treads radial to the holder is supported by a framework 4 on the top flange 3 of each lift is provided at the outside of the staircase with a byepass gallery 5 at a short distance above the flange 3 so as to enable an operator to step from the staircase on to the gallery and later, using the hand-railing 7 as a ladder, descend to the flange 3 to examine the guide-rollers. The gallery may extend wholly or partially round the holder.
Patent GB-440604-A (GB)
Title: Process for depolymerising and reclaiming rubber
IPC: C08J11/16
Filed: 1935-04-18
Abstract: Rubber, e.g. as old inner tubes or old tyre casings, is depolymerized by treatment with caustic soda and nascent oxygen. The nascent oxygen, may be produced by adding a hypohalite such as calcium or sodium hypochlorite to the caustic soda or by passing chlorine into the caustic soda to react therewith to produce sodium hypochlorite. In an example a steam-jacketed digester is charged with 4500 pounds of rubber scrap, 350 pounds of caustic soda, 20 pounds of calcium hypochlorite containing 70 per cent of available chlorine, 200 pounds of asphalt, 200 pounds of pine tar, 100 pounds of oleum spirit, (a light paraffin or mineral oil), and 7000 pounds of water.  The digester is sealed, steam-heated with agitation at 200 pounds per square inch for 10 hours, and the contents are dumped, washed and dried, the cellulose in solution in the caustic soda, being removed with the liquid.  The dried material is then rolled until it becomes plastic.  When inner tubes are being treated they are cut into small pieces and boiled with caustic soda, softening oils and hypochlorite in an open boiler.
Patent GB-636132-A (GB)
Title: Improved internal combustion turbine
IPC: F02C3/00
Filed: 1947-05-05
Abstract: 636,132. Gas turbines. DORMAN, E. J. May 5, 1947, No. 12024. [Class 110(iii)] An axial-flow turbine 7 receives combustion products through a channel 30 from pockets 19 in a rotating body 13. As the latter rotates fuel is injected into the pockets at 20, compressed-air is introduced at 24 at a pressure high enough to cause ignition, the products of combustion issue at 30 and scavenging air enters at 27A. The body 13 and an air compressor are mounted on separate shafts and driven by chaingears from the turbine shaft. The turbine has a central entry with divided flow and exhaust at each end.
Patent GB-1420556-A (GB)
Title: Polyhalogenated dibenzofuranes
IPC: C08K5/00
Filed: 1974-03-19
Abstract: 1420556 Polyhalogenated dibenzofurans CIBA-GEIGY AG 19 March 1974 [20 March 1973] 12065/74 Heading C2C [Also in Division C3] Polyhalogenated dibenzofurans of general formula in which the substituents X are each H, Cl or Br and at least 3 substituents X are Cl or Br, are prepared by reacting (a) dibenzofuran with Cl 2  or a chlorine donor and optionally subsequently with Br 2  or a bromine donor in the presence of one or more catalysts or (b) 2,4,8- trichlorodibenzofuran with Cl 2  or a chlorine donor and/or with Br 2  or a bromine donor in the presence of one or more catalysts. In the examples octachloro-; 2,4,8-trichloro-tetrabromo- and 2,4,8-trichloro-tribromo-dibenzofurans are prepared.
Patent GB-405599-A (GB)
Title: Dry cell rectifier
IPC: H01L21/00
Filed: 1932-04-28
Abstract: 405,599. Static contact rectifiers. SIEBEL, K., 9a, Wriezenerstraase, Hohenschonhausen, and EMERSLEBEN, O., 16, Treibjagdweg, Zehlendorf, both in Berlin. April 28, 1932, No. 12201. Void [Abridged as open to inspection under Sect. 91 of the Acts, April 29, 1932]. [Class 37.] A static contact rectifier comprising a semi - conducting disc of pulverized material located between metal discs has additions to the material of the intermediate disc consisting of asbestos thread with or without substances of crystalline structure different from that of the rectifying substance. Amorphous sulphur may also be added. Mixtures of copper, zinc and lead sulphides may be employed, with the addition of free sulphur. Magnesium, aluminium, zinc, or an alloy of these, may be used as the metal discs. The rectifier units 7 are located in a porcelain tube 6 which is screw-threaded and engaged by metal locking-caps 8. Specification 373,633 is .referred to.
Patent GB-895414-A (GB)
Title: Devices for generating and delivering mechanical vibrations
IPC: B06B3/00
Filed: 1959-04-10
Abstract: 895,414. Welding by pressure. AEROPROJECTS Inc. April 10, 1959 [July 8, 1958], No. 12248/59. Class 83 (4). [Also in Group XXXIX] In a welding device, a magnetostrictive or piezo-electric generator 22, Fig. 9, is coupled to the workpiece 70, 72 by a cylindrical element 34 an exponentially tapered element 36 and a plate 26, the element 36 being brazed or screwed to the centre of the plate which is resonant at the working frequency. The parts 34, 36 may be screwed together or mechanically bonded or they may be formed integrally. The edge of the plate is held in contact with the workpieee. The working frequency may be between 3000 and 100,000 c/s. The plates may vary in thickness as shown in Figs. 2 to 6. The device is supported by the resonant support 38 as described in Specification 837,279. Two generators may drive the same plate, Fig. 8. The plate 26 may rotate as the work advances. The disc is arranged to vibrate with one nodal circle in which region a groove 50, Fig. 7, may be formed. The generator 22 and the two elements 34, 36 are each one half wavelength in length. The device may be used to weld parts of the same material such as aluminium, aluminium alloy, copper, steel or parts of different materials such as aluminium alloy and copper or steel. Welding may be carried out at room temperature or at higher temperature below the melting point. The welding may be carried out in the ambient atmosphere, in vacuo or in inert gas. Specification 895,413 also is referred to.
Patent GB-988398-A (GB)
Title: Process for the production of 5-chloro-4-amino 2,6-dimethyl-pyrimidine
Inventor: BRAND ERICH
Filed: 1962-03-30
Abstract: 5 - Chloro - 4 - amino - 2,6 - dimethyl - pyrimidine is made by chlorinating 4-amino-2,6-dimethyl-pyrimidine in an aqueous medium containing a mineral acid, especially hydrochloric or sulphuric and preferably at least 1 mol. of the former or 1 equivalent of the latter, at preferably from 20 DEG  to 60 DEG  C., using substantially 1 mol. of chlorine per mol. of the pyrimidine. The product may be separated out from the reaction by the addition of alkali.  The examples describe the use of hydrochloric and sulphuric acids. Nitric acid is also stated to be suitable.
Patent GB-1116531-A (GB)
Title: New cyanine dyes derived from bases of the quinoline type and use thereof for sensitization of photographic emulsions
Inventor: GANDINO MARIO
IPC: G03C1/12
Filed: 1965-03-23
Abstract: Merocyanine and monomethine cyanine dyes are obtained by reacting quaternized heterocyclic bases of formula <FORM:1116531/C4-C5/1> wherein Y is N(C2H5) or Se and X is an anion with anhydro-bases or keto-methylenic heterocyclic compounds.  The heterocyclic bases and their quaternary salts form the subject matter of Specification 1,116,532.  Specified merocyanine dyes of formula <FORM:1116531/C4-C5/2> wherein Y2 is O, S, Se or N(C2H5) and R is a substituted or unsubstituted alkyl or aryl group, may be prepared by condensing a quaternized base with a compound of formula <FORM:1116531/C4-C5/3>