baber/WOPTO huggingface dataset:
Patent GB-336096-A (GB)
Title: Improvements in multiplex high frequency signalling systems
IPC: H04J9/00
Filed: 1929-10-07
Abstract: 336,096. Marconi's Wireless Telegraph Co., Ltd., (Hansell, C. W.). Oct. 7, 1929. [A Specification was laid open to inspection under Sect. 91 of the Acis, Oct. 8, 1929]. Multiplex signalling systems employing a single carrier wave are characterized by one or more of the channels utilizing frequency submodulation as a preliminary to single side-band modulation of the carrier, and one or more other channels utilizing ordinary amplitude modulation. In the transmitting system shown in Fig. 3, two keying channels and one telephony channel are afforded by the keys 66, 68, alternators 62, 64, and microphone 70, the joint output being applied to a pair of oscillating valves 82, 84 arranged to produce a frequency-modulated wave. This wave is used to modulate a crystal-controlled oscillator 100, and from the output one side-band is selected by a filter 110, is amplified at 120 and 130 and transmitted to an aerial 140 or to a line. The amplitude-modulation channels comprise a microphone 170 and alternators 162, 164, the joint output being amplified at 178 and utilized to modulate the amplitude of the output from the valves 120. At the receiving-station, Fig. 4, the received signals are amplified (with or without a heterodyne change of frequency) and directed to two separate channels, one of which may comprise a local oscillator 188, first detector 190, intermediate-frequency amplifier 192 and second detector 194. The mixed signals sent by amplitude modulation are thus received and sorted out by filters 184 &c, The second channel includes a limiter 154 which wipes out the amplitude modulation. The frequencymodulated waves may be heterodyned by a source 156 and detector 158 to lower the frequency band, and are amplified at 160 and passed to an analyzer and detector 182 which in known manner converts the frequency-modulation into amplitude modulation. The multiple frequency-modulated signals are then separated by filter circuits 184. Either the frequency channel or the amplitude channel or both may be used as a simplex channel. The frequency-modulated signals may be produced by arranging a key to vary the inductance or capacity of the tuned circuit of a valve oscillator (Fig. 1, not shown).
Patent GB-404784-A (GB)
Title: Improvements in electric heaters or radiators
IPC: F24C7/06
Filed: 1932-10-31
Abstract: 404,784. Electric radiators. THOMAS, B., and THOMAS, E., 34, Worsley Street, Hulme, Manchester. Oct. 31, 1932, No. 30476. [Class 39 (iii).] An electric heater or radiator consists of a heating element d enclosed in a sheath formed by a trough a and cover b held together by caps c at the ends so that the cover can be removed to expose the whole of the heating element without dismantling the remainder of the heater. The edges of the trough are turned in towards each other to facilitate putting on the cover. Two or more heating elements may be arranged in one sheath. The sheath may be provided with feet for attachment to the wall or the floor, or the sheaths may be carried in a metal tray r or on a bracket q. Perforations, which may be covered with wire gauze, may be provided in the sheath. The heating element support may be a metal strip having turned up tabs carrying insulators for the heating element in the manner of the heating element described in Specification 320,352, [Class 37, Electricity, Measuring &c.]. Specification 139,564, [Class 39 (iii), Heating by electricity], also is referred to.
Patent GB-1394087-A (GB)
Title: Wear-resistant apex seal for a wankel type rotary engine
IPC: C23C4/08
Filed: 1972-06-29
Abstract: 1394087 Coating with self-fluxing alloys: nitriding NISSAN MOTOR CO Ltd 29 June 1972 [3 Aug 1971] 30550/72 Headings C7F and C7U The apex seal of e.g. steel, cast iron Cu or Ni of a Wankel engine, is sprayed with a self fluxing alloy which is (a) Ni, (b) Ni-Cr or (c) Co-Mo-Fe each with B and/or Si, and the coating nitrided. The coating may be fused at 1000 to 1250‹C before nitriding. Nitriding may be effected in a molten salt (KCNO) at 570‹C.
Patent GB-299427-A (GB)
Title: Improvement in cementitious material
IPC: C04B28/26
Filed: 1928-10-22
Abstract: 299,427. Metherell, A., (Assignee of Barnhart, E.). Oct. 26, 1927, [Convention date]. Concretes and mortars, cement. - A cement concrete having a glazed surface and glaze forming matter distributed through the mass is formed by adding magnesium chloride, calcium chloride, aluminium sulphate and sodium potassium silicate to the gauging water. The aluminium sulphate may be replaced by an alum preferably with the addition of magnesium sulphate.
Patent GB-1525039-A (GB)
Title: Gas shrouding of liquid streams
IPC: B22D11/106
Filed: 1976-07-22
Abstract: 1525039 Tundishes JONES & LAUGHLIN STEEL CORP 22 July 1976 [30 July 1975] 30657/76 Heading F4B [Also in Division B3] A protective atmosphere of gas for a stream of liquid, e.g. inert or reducing gas for protecting a stream of molten steel flowing from a tundish 1 to a mould 2, is delivered by a pipe 17 through an end member 13 releasably connected and sealed to the end of a tube 12 (as by sliding into or on to the tube 12 while bearing a seal 14), so that the gas passes to an open-ended tube 11 to flow out at its ends; for positioning the shroud head 11, 12 the end member 13 is supported by way of at least two pivots 18 and 23. The pivot 18 is vertical pin secured to a connection piece 16 and which can rotate in a piece 21 unless secured by means 25 and not subjected to sufficient force to overcome the securement. Pivot 23 is a connection piece, connected by an arm 22 to the piece 21, and can swivel on a vertical pin (31) of an assembly including a height-adjusting screw (32) in a nut 33 and a keyway 35 for prevention of rotation. The whole shrouding apparatus is mounted by way of the latter pin assembly, in the vicinity of the mould 2 as shown, but possibly, inverted, on the bottom of the tundish 1.
Patent GB-1359704-A (GB)
Title: Heat-recoverable article and its manufacture and use
IPC: B29C61/06
Filed: 1971-06-30
Abstract: 1359704 Heat-shrinkable insulation RAYCHEM CORP 30 June 1971 [6 July 1970] 30686/71 Heading B5A A heat-shrinkable insulating cover for an angled electrical terminal assembly of the "quick connect" or "tab" type is made from a blank 10 (Fig. 1) that is heated and moulded to a different configuration twice, before being heat-shrunk on to the terminal. The blank 10 comprises tubes 13, 15 interconnected by a portion 21, and a planar wall 17, a number of blanks being interconnected by a web 11 and strips 12. The strips 12 are removed, the blanks 10 separated and each placed in a clamp 22 (Fig. 9), heated, and shaped to a single tube 10a by a metal plunger 23. After cooling, the plunger 23 is replaced by a plunger 25 (Fig. 11) having a pivoted arm 29. After heating, a rod 31 is depressed to rotate the arm 29 as shown in Fig. 11, to form a spout 34 in the area of the blank interconnecting portion 21 (Fig. 1). After further cooling, the article so formed is separated from the supporting web 11  (Fig. 11), placed over a wired-up terminal comprising a tab 37 (Fig. 7) and wire socket 38, and heat-shrunk into place as in Fig. 7. Suitable materials are P.V.C., P.T.F.E., polyvinyl acetate, polypropylene, polyethylene, polyurethane or ionomers having plastics or elastic memories, and include as fillers wood flour, silica, mica, talc, slate, flour, asbestos, alpha pulp, or cotton flock.
Patent GB-1129243-A (GB)
Title: Radio receiver control system
IPC: H03L7/181
Filed: 1966-07-08
Abstract: 1,129,243. Automatic frequency control systems; superheterodyne circuits. L. ILLING- WORTH. 18 Aug., 1967 [8 July, 1966], No. 30704/66. Headings H3A and H3Q. The frequency of the second local oscillator 15 of a double superheterodyne receiver is controlled by gating its output into a counter 25 to provide a count proportional to its frequency, and comparing this count with a desired number stored in register 19 to derive an error signal used to control the frequency by switching in various values of inductance and capacitance or by changing parameters in a relaxation oscillator. In the radio receiver shown in Fig. 1 a desired frequency is inserted into the register 19 by means of a telephone dial 17 and may be corrected by a knob 20 which is a fine tuning control, and the stored number may be fed to a display 23. The first three digits of the stored number select the required filters which are used in R.F. amplifier 11 instead of tuned circuits, and also control the frequency derived from a standard frequency source 12 which is used to supply the first mixer 13. The last five digits in the register control the frequency of the second local oscillator, as explained above, and may (but need not) be fed to the adder unit 27 to control the initial frequency of the oscillator 15. The standard source 12 supplies signals to control the gating of counter 25, and may supply an auxiliary signal to detector 24, e.g. a carrier for a single side-band signal or a beat frequency to produce an audible tone.
Patent GB-752773-A (GB)
Title: Improvements in and relating to the manufacture of containers or barrels from glass fibre mat impregnated or sprayed with plastic
Inventor: EVENBLIJ JOHAN CARLJULIUS
IPC: B29D22/00
Filed: 1954-10-26
Abstract: 752,773. Moulding barrel ends. NAAMLOOZE VENNOOTSCHAP POLYPRESS, I. O. Oct. 26, 1954, No. 30826/54. Class 87(2) [Also in Group XVII] A glass fibre mat 4, sprayed or impregnated with plastic, is placed between moulds 8 and 9 and compressed to form a barrel end. The mould may be heated, The mat has a pre-formed hole to accommodate a screw core 10 passing through the moulds 8 and 9. After moulding the screw core 10 is unscrewed to leave a threaded hole in the barrel end.
Patent GB-677413-A (GB)
Title: Improvements in titanium alloys
IPC: C22C14/00
Filed: 1950-12-19
Abstract: A titanium-base alloy has the following composition:  C 0.1-1.0 per cent, Mn 0.1-20.0 per cent, Ti, and impurities the balance. The alloy may also contain one or more of the following elements: Si 0.1-1.5 per cent, Al 0.5-6.0 per cent, V 0.1-1.5 per cent and B 0.1-1.5 per cent.  The alloys may be made by mixing powders of the constituents other than carbon and melting in a graphite crucible in an inert atmosphere, the amount of carbon absorbed from the crucible being controlled by the length of time the melt remains in contact with the crucible.  Castings may be hot forged at about 870 DEG C.  The alloy may be hardened by heating at about 1000 DEG C and quenching.  It may be then softened by heating at about 800 DEG C and slowly cooling.
Patent GB-820887-A (GB)
Title: Aircraft navigation apparatus
IPC: G05D1/08
Filed: 1955-10-28
Abstract: 820,887. Electric indicating systems. SPERRY RAND CORPORATION. Oct. 28, 1955 [Oct. 28, 1954; Nov. 30, 1954], No. 30966/55. Class 40 (1). [Also in Group XXXV] In gyroscopic apparatus indications of, or signals from, a gyro are dependent on the angular position of an aircraft relative to a reference direction or plane, misalignment between the gyro and a monitoring device defining a reference direction or plane is automatically corrected by torque applied to the gyro, and misalignment between the gyro and the monitoring device caused by acceleration of the aircraft is compensated for by modifying the indications of, or signals from, the gyro in proportion to that component of misalignment which is due to acceleration. In Fig. 1 a gyrovertical 2 on an aircraft is automatically erected about the pitch axis by a gravity-responsive liquid resistance 5 controlling a torque motor 13 through an amplifier 13<SP>1</SP>. Signals from a pick-off 21 associated with the gyro-vertical pitch axis are applied through a variable inductive device 20 either to an automatic pilot servo-system controlling the elevators as shown or to an instrument indicating the pitch of the aircraft to a human pilot. Signals from the gravity-responsive resistance are also applied to a motor-type integrator 15 which adjusts inductive device 20 so that the short term effects of longitudinal accelerations of the aircraft on the gravity-responsive resistance are prevented from affecting the attitude of the aircraft or the indication of the indicating instrument. Feedback to the integrator prevents an ever increasing signal from the integrator over long time periods. In the automatic pilot shown, a desired altitude is maintained by applying signals from an E-type pickoff 23 associated with an altimeter to the elevator servo-system. The effect of changes of angle of attack on the altimeter is automatically compensated for by introducing signals derived from pick-off 28 of an accelerometer 27 which combines with the gyro-vertical in measuring longitudinal accelerations of the aircraft. In one modification, the integrator is of the resistance-capacity type, the D.C. output of which is combined with D.C. signals from a potentiometer type pick-off associated with the gyro-vertical. These two signals may separately position the horizon bar and reference index of a pitch indicating instrument for a human pilot. In another modification the gyro-vertical is erected about the roll axis by a gravity responsive liquid resistance and a directional gyro is slaved to a flux valve compass. The two gyros may control the ailerons and rudder in an automatic pilot arrangement or they may merely operate navigational instruments. The signals from the gravity-responsive resistance are integrated to provide a compensating signal in the roll control or indicating circuit. A lateral acceleration signal derived from an accelerometer combined with the gyro vertical influences a motor adjusting a selsyn input to the aileron control system. U.S.A. Specification 2,729,780 is referred to.
Patent GB-1485042-A (GB)
Title: Catalytic structures
IPC: B01J23/74
Filed: 1974-08-06
Abstract: 1485042 Catalytic structure for exhaust gas treatment COMPTOIR LYON-ALEMANDLOUYOT 6 Aug 1974 [6 Aug 1973] 30981/74 Headings B1E and B1F [Also in Division Cl] A catalytic structure for treatment of I.C. engine exhaust gases comprises a plurality of expanded metal or metal alloy sheets mounted in a stack with a spacing of 0.5-2.5mm; the stack being located inside a rigid block: the thickness of the sheets before expansion being 0.05-0.25mm; the imperforate area of the sheets being 20-80% of the total area; and the sheets carrying (i) a layer of nickel and/or cobalt aluminide, (ii) deposited thereon, a layer of alpha-alumina, and (iii) deposited thereon, a surface catalytic layer, e.g. a platinum group metal, optionally carried on gamma- or eta-alumina. The sheets may be spaced by interposed wires welded thereto. The structure 1 may be mounted in a housing 7 and located by spacers 8 of metal fabric or corrugated metal sheet. An inlet tube 20 containing gas directing baffles 15 and an outlet tube 13 may extend into the structure from opposite ends.
Patent GB-171712-A (GB)
Title: Improvements in and relating to flying machines of the helicopter type
IPC: B64C27/26
Filed: 1921-11-21
Abstract: 171,712. Pateras Pescara, Raul, Marquis of. Nov. 20, 1920, [Convention date]. Helicopters; propelling; steering and balancing. -A helicopter has one or more pairs of propellers 11, 12 revolving in opposite directions, and is provided with the means for varying the angle of incidence of the blades described in Specification 159,275, [Class 114, Ships &c., Propelling &c.], with means, such as that described in Specification 146,257, for causing the thrust of the propellers to be eccentric, and with means, such as that described in Specification 159,223, for varying the resisting couple of each propeller. The propellers 11, 12 are driven by a motor or motors 10 through a clutch 18 and a gear 15. A tractor propeller 19, having variable pitch, is driven through a clutch 21 or by an independent motor or motors. The means for varying the resisting couples of each propeller is controlled by a bar 28. An elevator 26 and a rolling rudder 27 may be controlled by a joy-stick 24. The machine is adapted to descend with freely rotating propellers.
Patent GB-504449-A (GB)
Title: Improvements in and relating to bases for vacuum electric discharge devices
IPC: H01J19/66
Filed: 1938-10-28
Abstract: 504,449. Two-part couplings; sealing lead-in wires; thermionic valves. BRITISH THOMSON HOUSTON CO., Ltd. Oct. 28, 1938, No. 31238. Convention date, Oct. 30, 1937. [Classes 36 and 38 (i)] [Also in Groups XI and XL] A base for a thermionic valve having a metal envelope or an envelope partially of glass consists of a meta! disc 3 that closes the envelope 1 and carries in insulating mountings the contact pins 7 and has welded thereto a tube 13 for exhausting the envelope. This tube serves also as a locating pin for determining the position of the valve in its holder. If the tube is sealed by flattening the end 33 the holder has a spring clip 31 to fit it, the hole in the mounting plate, formed of two layers of heavy varnished 'cambric 20, being made larger than those to receive the pins 7. If the tube 13 is sealed by a glass cap 15, Fig. 9, it is enclosed in a cover 16 of larger diameter than the pins 7 or the tube itself may be of a different diameter and sealed by a metal ball soldered to its end. The pins 7 are sealed into eyelets 5, Fig. 5, welded to the disc 3 and made of a metal having the same coefficient of expansion as glass, such as that described in Specification 449,807, [Group XXIII], so that glass seals 6 can be used to support, and insulate the pins 7. In order to prevent damage to the seals by lateral pressure on the pins, a neck 9 may be formed in the lead-in stem 4, or the same effect may be produced by thickening the portion of the stem to which the glass seal is applied. When the envelope 1 is made of glass, the disc 3 is made of the same metal as the eyelets 5. Specifications 340,049 and 352.945, [both in Group XL], also are referred to.
Patent GB-244919-A (GB)
Title: Improvements relating to seed-drills
IPC: A01C7/20
Filed: 1924-12-30
Abstract: 244,919. Miller, G. J. Dec. 30, 1924. Seed drills.-In drills in which a rotary seed sower is carried by a coulter on a pivoted lever frame or arm and is rotated by chain gearing, the lever frame is pivoted co-axially with the driving- shaft for the sower but is not supported by it. The driving-shaft l passes freely through bosses i on a bracket fixed to a cross-bar k, the lever frame a being pivoted on these bosses i by means of adjustable fittings. The frame a comprises two parallel bars a<1> connected together by ties g two of which carry the coulter b. The seed sower c is mounted in the coulter b and is driven from the shaft l by chain gearing m, f, e.
Patent GB-629781-A (GB)
Title: Improvements relating to floors
IPC: E04F15/00
Filed: 1947-11-26
Abstract: 629,781. Dielectric heating. BATESON, R. G. Nov. 26, 1947, No. 31331. [Class 39(iii)] A layer of flooring material is secured to a sub-floor, for example of concrete, by means of a thermo-setting adhesive and a H.F. dielectric field is applied by means of a gun type applicator to a number of points distributed over the floor to cause rapid and local setting of the adhesive by the dielectric heating thus obtained. The flooring material may be wood veneer, plywood, linoleum, rubber, hardwood, cork or the like.
Patent GB-829422-A (GB)
Title: Method and apparatus for producing semi-conductor materials of high purity
Inventor: STERLING HENLEY FRANK
IPC: H01L21/205
Filed: 1956-10-16
Abstract: <PICT:0829422/III/1> A crystalline body is produced by drawing a seed crystal 18 (Fig. 3) from a melt 21 obtained by melting a limited portion of material at the top of a rod-like mass 17.  The seed 18 is supported by a rod 16 and the mass 17 is supported on a rod 15, the rods 16 and 15 being raised at such respective rates that the melt 21 is maintained at a constant level.  The material is melted by a single-turn coil 1 consisting of a water-cooled copper box of annular form but divided by a narrow slot which is connected to a source of high-frequency current.  The inside edge of the coil 1 is tapered so that the electromagnetic field applies lifting forces to the melt to assist the surface tension in holding the melt in position.  In a modification the mass 17 is surrounded by a water-cooled copper sleeve which distorts the electromagnetic field so that the lifting forces are changed so that a larger volume of melt can be maintained, so that a crystal of larger diameter can be grown.  The material may be a semi-conductor, such as silicon or germanium, and significant impurities may be added to the melt.  Specifications 826,575 and 829,421 are referred to.
Patent GB-1518117-A (GB)
Title: Oxidation and adsorption method for removing contaminating substances in aqueous liquids
IPC: C02F1/28
Filed: 1975-07-28
Abstract: 1518117 Electrolytic coagulation, oxidation and adsorption of impurities KH HARTKORN 28 July 1975 [29 July 1974] 31448/75 Heading C1C Contaminants are removed from aqueous liquids by combining an electrochemical treatment which coagulates contaminants, with a partial oxidation of the organic material by addition of NaOCI to the aqueous liquid, and separating coagulated and oxidized material, at least some of the oxidized material being removed by adsorption. Suitable adsorbents are pressed glauconite, porous pressed fireclay, silicates and montmorillonite. Ozone may be used as an additional oxidizing agent.
Patent GB-153866-A (GB)
Title: Heating device or plant for solid and liquid vaporous or gaseous combustible
IPC: F24C1/04
Filed: 1920-11-06
Abstract: 153,866. M÷gel & Co. Nov. 13, 1919. [Convention date]. Air supply f o r combustion; steam supply for increasing combustion; grates. -The fire-place of a domestic stove, central-heating furnace, boiler furnace, or the like is fitted with one or more sets of chambers g, h which are heated by the fire and through which air and steam or other gas are respectively supplied, the resulting m i x t u r e being delivered over or into the fire by nozzles i. The air inlet to the chamber g is controlled by a damper l and valve-controlled pipes p supply water, tar, or the like to the chambers h. Reference has been directed by the Comptroller to Specification 27508/09, [Class 51 (i), Furnaces &c., Combustion apparatus of].
Patent GB-315332-A (GB)
Abstract: 315,332. Heatley & Gresham, Ltd., and Spital, C. March 12, 1928. Dating railway tickets; cutting- apparatus.-A ticket-marking press is provided with a cancelling-device, such as a punch for cutting a notch in the ticket, arranged to be brought into or placed out of operation at the will of the operator. As shown, the press is of a known kind comprising an arm 5 rocking about the upper edge 3 of a knife 2 carried by a standard 1 and a member 12 slidably mounted on the arm 5 and spring-pressed against the lower edge 4 of the knife 2 through a bearing plate 13 adjustable in position by a wedge 15. The swinging movement of the arm 5 is limited by lugs 8, 10 on the base 6 of the arm 5 which engage resilient stops 9, 11, and the inward movement causes the member 12 to be pushed down so as to press a dating-device 19 carried thereby on to a ticket placed in a slot form by the top of a plate 23 and a recess in a cover plate 33. The dating- device 19 is detachably fixed in position in known manner by a catch 20. The punch consists of a plunger 24 slidably mounted in a guide 25 and provided with a V-shaped projection 28 coacting with a corresponding slot 32. The control device for the punch consists of a hand-lever 36, which is pivoted on the member 12 and rests on top of the plunger 24, so that, when the lever is turned down, the plunger is moved into an operative position and is further depressed when the machine is operated; otherwise, the ticket is marked without being punched. Alternatively, the punch may normally be in use and be moved into an inoperative position at will. Instead of being slidably mounted, the punch may be pivoted.