baber/WOPTO huggingface dataset:
Patent GB-1034686-A (GB)
Title: Improvements in or relating to the production of friction linings, more particularlyfor aircraft brakes
IPC: C22C32/00
Filed: 1963-08-23
Abstract: Sintered friction linings are made by sintering in a protective atmosphere a compacted powder mixture containing 5-47% boron carbide, 15-40% cobalt, 2-15% nickel and 5-15% chromium.  The boron carbide grainsize is preferably 0.1-1mm and the cobalt, chromium and nickel are preferably in the form of a "STELLITE" alloy (Registered Trade Mark) with a grainsize of 0.01-0.1 mm. Other powders which may be added are tungsten, carbon, silicon, iron, molybdenum, antimony and tin and six examples of different compositions are given.  The mixture is hot pressed at 1000 DEG -1150 DEG C. under vacuum or a carburizing atmosphere containing CO2, CO, hydrogen and nitrogen or CO2, CO, methane and hydrogen.  The powder mixture is hot pressed and sintered on to a metal backing e.g. of steel, the assembly being stacked in a die with a graphite washer separating each assembly 2 on alternative arrangement the metal backing forms the mould.  A layer of powdered "STELLITE" is preferably placed between the metal backing and the boron carbide containing powder.
Patent GB-1199483-A (GB)
Title: High Resistance Reactor Coatings.
IPC: C23C4/02
Filed: 1967-07-21
Abstract: 1,199,483. Acetylene. MONTECATINI EDISON S.p.A. 21 July, 1967 [22 July, 1966], No. 33739/67. Heading C5E. [Also in Division B2] The inner surface of a metal hydrocarbon cracking reactor is coated by spraying molten alumina (alpha form), zirconia stabilized with lime, magnesia or yttrium oxide, magnesia, thoria, a composite metal oxide or a mixture thereof, the sprayed materials having ceramic characteristics and melting-point > 1900‹ C. (see Division B2). The surface to be protected may be part of the inner surface of a reactor for the production of acetylene by a partial combustion process, e.g. the burner, combustion chamber or injection nozzle. In an example a protective coating of ceramic character is applied to the stainless steel burner and the combustion chamber of a hydrocarbon cracking reactor. The surfaces to be coated are first degreased, sanded and a connecting coating deposited. The connecting coating consists of two superimposed layers, the first layer containing chromium, nickel, iron, silicon, boron and carbon and the second layer chromium and nickel. A protective ceramic coating is then applied on to the connecting layer by the application of zirconium oxide stabilized with calcium oxide. The deposition of both the connecting layer and of the protective ceramic coating is carried out by spraying in the molten state with ejection of the materials to be applied into a plasma flame jet arc. The coating is said to extend the life of the reactor and increase its efficiency.
Patent GB-755598-A (GB)
Title: Process for carrying out nuclear fission reactions
IPC: G21C1/22
Filed: 1954-11-22
Abstract: 755,598. Nuclear reactors. STICHTING VOOR FUNDAMENTEEL ONDERZOEK DER MATERIE. Nov. 22, 1954 [Nov. 25, 1953], No. 33765/54. Class 39 (4). To reduce waste of neutrons in a thermal reactor, the initial proportion between the quantities of moderator and fissile material is selected to afford minimum change in reactivity with fluctuations in this proportion. The nuclear fuel is in solution or suspension in a liquid, such as a suspension of UO 2  in D 2 O and the gradual variation in the proportion is effected outside the reactor by separation and/or by adding more fissile material. To compensate for the increased number of neutrons available as Pu<SP>239</SP> is formed from natural uranium and U<SP>235</SP> is consumed, some of the uranium is replaced by impoverished uranium, such as waste product from diffusion plants producing U<SP>235</SP>. Alternatively the fissile material may be diluted with Th<SP>232</SP>. For a reactor of radius Rc, the ratio of D 2 O to UO 2  that produces a neutron reproduction factor of unity is shown by curve 1 for natural uranium, and by curve 2 for fissile material having all U<SP>235</SP> replaced by Pu<SP>239</SP> during operation. Curve 3 represents dilution with 30 per cent U<SP>238</SP> and formation of 0.55 per cent PU<SP>239</SP>, so that with a radius 7 there is comparatively little change of reactivity with variation of D 2 O to UO 2  ratio.
Patent GB-1160967-A (GB)
Title: Fibreboard and Method of Making the Same
IPC: D21J1/08
Filed: 1966-07-27
Abstract: 1,160,967. Coated fibre board. ARMSTRONG CORK CO. 27 July, 1966 [27 July, 1965], No. 33795/66. Heading B2K. [Also. in Division D2] A method of making fibreboard having improved sag resistance comprises subjecting one surface of the fibreboard to an abrasive treatment .and coating the other surface with a coating material e.g. melamine-formaldehyde resin, starch or proteinaceous material which penetrates and acts as an individual binder for the fibres in the surface region of the board. In a preferred method fibreboard is fed from board-forming machine 20 to screen press 27 where it is compressed and dried, the product being coated at 34, cut into individual boards by saw 38, the boards being moisture conditioned by headers 42, stored and the uncoated surfaces abraded 'by rough sanding belt 64 and finish sanding belt 45. Optionally, the sanded or both surfaces of the boards are then painted and dried. The coating may be applied whilst the board is still wet, alternatively abrading may be effected prior to coating.
Patent GB-341600-A (GB)
Title: Improvements relating to electric mercury tube switches
IPC: H01H1/58
Filed: 1929-11-07
Abstract: 341,600. Mercury switches. McCABE, I. E., 564, West Adams Street, Chicago, U.S.A. Nov. 7, 1929, No. 33940. [Class 38 (v).] Cases. - A mercury switch comprises a tubular bulb having electrodes and a filling stem sealed in one end and projecting therefrom. A blown glass bulb 1, Fig. 1, is held in a vice 1a and electrodes 3 and a sealing tube 5 are held i n the open end which is then heated and pressed so as to seal in the electrodes and the sealing tube. A wire 6 is provided for keeping the tube clear. A body of mercury and an inert gas are introduced through the tube 5 which is then sealed off at 7, Fig. 4. Braided flexible leads 8 are slipped over the ends of the electrodes 3 and insulating sleeves 8<1>, 9 serve to hold the leads in position. In a modification, Fig. 6, one of the electrodes supports an insulating cup into which the other electrode dips, and the external leads are supported by a mass of insulating composition. Other modifications having three and four electrodes are also described.
Patent GB-467171-A (GB)
Title: Improvements in or relating to radio or like receivers
IPC: H03H7/01
Filed: 1935-12-07
Abstract: 467,171. Wireless receiving-apparatus. FERRANTI, Ltd., and EDWARDS, A. W. Dec. 7, 1935, No. 33952. [Class 40 (v)] [Also in Group XXXVI] The frequency range of response of a band-pass filter circuit in a radio receiver is automatically reduced to a preset minimum when the tuning knob is rotated, the reduction being maintained until increased manually. In Fig. 1, the response curve of an intermediate frequency transformer of a superheterodyne receiver is varied by sliding the coil b towards or away from coil a, which is effected from the control knob p through a slotted member secured to and actuating the cranked lever e. The rod t is urged in an anticlockwise direction by a light spring u while a toothed wheel r is frictionally mounted on the rod o. A cam s is keyed to shaft o and has two sloping ramps y, z, and a stop member 2 as shown in Fig. 3. Two spring-loaded arms x, w, pivoted at 4, engage the toothed wheel r and a star-wheel 6 at their lower and upper extremities respectively the arrangement being such that when tooth v<1> of member x coincides with a slot in wheel r, tooth v of member w rides on a tooth of r; conversely when v<1> engages a slot, the bar 7 coincides with a slot in wheel 6 as shown. The star-wheel 6 is secured to the tuning control shaft 5 of the receiver; when the receiver is in tune with a given transmission the knob p is turned clockwise to increase the coupling between coils a and b, thereby to increase the band-width to given maximum fidelity. This rotates the wheel r and cam s until it reaches the position shown in Fig. 3, when tooth v<1> engages the wheel r and arrests its movement. On rotating the knob p to tune in another station, the star wheel 7 forces outwards the upper ends 7, 8, of members x, w, the wheel r is released and rotates sharply in an anticlockwise direction by the force of spring u, Fig. 1, until the stop 2 strikes the end of member x; the coupling between a and b is thus simultaneously reduced, and when a further station is tuned in, clockwise rotation of p by hand again sets the device for the next tuning operation of shaft 5. The noise of stop 2 striking member x gives an audible indication that automatic reduction of coupling has taken place.
Patent GB-1411314-A (GB)
Title: Combine harvester with a straw- shaker
IPC: A01F12/30
Filed: 1973-07-17
Abstract: 1411314 Separating straw within combines DEERE & CO 17 July 1973 [17 July 1972] 34001/73 Heading A1F A combine harvester comprises an upper long-straw shaker 14, a short-straw separator arranged at least partially directly below the upper long-straw shaker, and a long-straw loosening and pick-up device comprising rotating tines 16 which pick up the long straw and feed it over the device either back to a later stage 4 of the upper straw shaker, Fig 1, or to a separate straw separating machanism, Fig 2. The shorter straw, not picked up by the tines 16 drops onto the short-straw separator which may be a straw shaker 38 or an air current separator. The short straw falls via apertures 32, Fig 1, in shaker stage 6 or via a gap 42, Fig 21 between the end of the shaker and the device. Fig 1 includes a tray 36 which discharges the shorter straw and grain from stage 4 to the straw shaker 38 via end 34. The tines 16 move in slots in a casing 20 and are retractable during their transit Fig 2 includes a straw guiding drum 26.
Patent GB-1434988-A (GB)
Title: Preditive modulation system
IPC: H03M3/02
Filed: 1973-07-17
Abstract: 1434988 Delta modulation NIPPON ELECTRIC CO Ltd 17 July 1973 [17 July 1972] 34007/73 Heading H3H A delta modulation system is characterized in that the converter for converting the one-bit pulse train into a predicted analog signal comprises a D/A converter having a digital storage device and means for producing the predicted analog signal from a number stored in the storage device, and a means for altering the stored number from a first sampling instant to the next by a digital step of an amount selected from a group of at least 3 step sizes each having a different modulus all being different from zero, where the means for altering selects the bit size in accordance with the values of consecutive stored bits of the one-bit pulse output train. Preferably the group comprises the sizes Œ1; Œ2; Œ4 and in a modification, Fig. 1 (not shown), the value of the minimum positive step is increased by ¢ m. (e.g. “) of the minimum step size. An analog loop may also be connected with the output of the means for altering which output is delayed by 1 sampling clock interval prior to application to an analog step-size selector. An undolayed output may also be applied to this selector and its output is applied to an analog adder together with the output from a local D/A converter connected with the output of the digital storage device. In a further modification, Fig. 7 (not shown), a particular input analog value is detected and the storage device is reset upon this detection. A particular pulse train, in place of the 1-bit delta pulse train, is also transmitted upon this detection and detected by the receiver whereby the storage device therein is also reset. The storage device may also be provided with means to prevent its overload. Preferably the means for altering is a shift register for storing the output bits coupled with logic circuitry for generating a step-size selecting signal, and the storage device is a binary counter.
Patent GB-1483792-A (GB)
Title: Transfer printing process
IPC: D06M101/06
Filed: 1974-08-01
Abstract: 1483792 Transfer printing HEBERLEIN TEXTILDRUCK AG 1 Aug 1974 [3 Aug 1973 11 June 1974 18 June 1974] 34054/74 Heading D1B A process for the combined dyeing or printing and treatment of a textile fabric comprising cellulose fibres, comprises treating the fabric with an aqueous solution of a crosslinking agent for cellulose, pre-drying, transfer printing and simultaneously heating to fix the cross-linking agent and the dye, in the presence of at least one catalyst for the crosslinking reaction. Preferred cross-linking agents are dimethylol carbamates, dimethylol urea and cyclic dimethylol urea compounds, triazinones, methylol melamine compounds, watersoluble etherified methylol melamine compounds, and compounds containing aldehyde group(s). Preferred catalysts are magnesium chloride and nitrate, zinc chloride and nitrate, diammonium sulphate, and metal salts of polycarboxylic acids such as citric, tartaric, succinic and ethylenediaminetetraacetic acid. Preferred sublimable dyes contain hydroxy, amino, amide, sulpho or carboxy groups. The fabrics, particularly cotton and polyester/ cotton, may present improved dimensional stability, crease-resistance and/or press-free and durable press finishes.
Patent GB-1323347-A (GB)
Title: Transistor output stages of amplifiers
IPC: H03F3/30
Filed: 1970-07-14
Abstract: 1323347 Transistor power amplifiers J PAPAIX 14 July 1970 [16 July 1969] 34066/70 Heading H3T An output stage of an amplifier and a protection arrangement comprising two power transistors T1, T2 connected in push pull to a common load 1 with their bases supplied with respective antiphase input signals from first and second signal sources 4, 5, has for each power transistor T1, T2 the emitter-collector circuits of a switch transistor T5 interposed in series in the signal paths between the first and second sources 4, 5 and the base circuits of the power transistors T1, T2 and the switch transistors T5 are controlled by means 15, 19; 16, 20 producing a voltage whose value varies in the same sense as the intensity of the current supplied through the power transistor concerned to the load so that the switch transistor T5 opens the signal path when the voltage exceeds a predetermined threshold. Signals in phase opposition are provided from windings 4 and 5 of a transformer 6 and are fed via the switch transistor T5 which is conducting. If the input signal becomes excessive and the current through the resistors 15, 19, 16, 20 reaches an overload value the voltage at the sliders 21, 22 of the potentiometers 19, 20 turns off the transistors T5 to prevent overload of the power transistors T1, T2. Similarly if the reisistance of the load is reduced, e.g. by a short circuit, overload would be prevented by the transistors T5 turning off. The amplifier includes transistors T3 and T4, connected to form a Darlington assembly with power transistors T1, T2. The load 1 may be a loud speaker. In a modification (Fig. 2, not shown), the transistors T3, T4 are connected by their collectors to the base of the power transistors so that the current overload is detected from a tapping (31, 32) of potentiometers (29, 30) connected in parallel with a resistor (23, 24) in series with a diode (25, 26) in the emitter circuit of the transistors T3, T4.
Patent GB-324165-A (GB)
Title: An improved electric fuse or cut-out
IPC: H01H85/38
Filed: 1928-11-21
Abstract: 324,165. Revo Electric Co., Ltd., Reeves, F. H., and Crawford, A. Nov. 21,1928. Fusible cut-outs.- A fusible cut-out of the bridge type in which the bridge handle has a projection d<1> adapted to enter a recess b in the base, lined with asbestos &c., is provided with terminals e<5> on opposite sides of the projection, the fuse wire being connected to these terminals and passing obliquely across the projection. The terminals are connected bv metal members e<3> to the contacts e which enter end compartments a<4> in the base. The terminals e<5> enter lateral recesses a<2> in the base. When the two parts of the fuse box are connected together the base is closed by flanges d<2> on the handle portion.
Patent GB-842418-A (GB)
Title: Improvements relating to electric cable couplings
Inventor: JAMES WILLIAM CHARLES
IPC: H01R13/52
Filed: 1956-12-11
Abstract: 842,418. Two-part couplings. SIMMONDS & STOKES (NIPHAN) Ltd. Dec. 9,1957 [Dec. 11, 1956], No. 34126/59. Divided out of 842,417. Drawings to Specification. Class 38(1). The Specification describes and illustrates a plug and socket connector as shown in Fig. 1 of the drawings accompanying Specification 842,417, the claims being directed to the cable entry.
Patent GB-856623-A (GB)
Title: Improvements in combine harvesters
IPC: A01D41/14
Filed: 1956-11-08
Abstract: 856,623. Combine-harvesters. RANSOMES SIMS & JEFFERIES Ltd., and JARVIS, J. S. Nov. 8, 1957 [Nov. 8, 1956], No. 34221/56. Class 6(3). In a combine-harvester the header 1 is pivoted to the harvester-body 3 and is adjustable relatively thereto by the action of a hydraulic ram 11 pivoted to a swinging bracket 8 on a cross-shaft 9, the bracket being connected to the header 1 by a link 6. The other end of the ram 11 is pivoted, at 12, to a pair of arms 13 pivoted ,at 14, on the main frame and carrying a pad 15 which bears against an adjusting screw 16 threaded through a fixed cross-member. Adjustment of the screw thus sets the lowest point of the stroke of the ram and therefore the lowest point of adjustment of the header. In a modification the arms 13 are omitted and the pivot 12 is received in slots in the fixed members 17 and can be screwed along the slots by the screw 16 which bears directly on the end of the ram, Fig. 3 (not shown).
Patent GB-521668-A (GB)
Title: Improvements in flasks and to closure caps therefor serving as devices for applying liquids
IPC: B65D47/42
Filed: 1938-11-24
Abstract: 521,668. Bottles and closures therefor; reservoir brushes. MERMOD, R. Nov. 24, 1938, Nos. 34233 and 34234. Convention dates, Nov. 25, 1937, and March 24, 1938. [Classes 125 (i) and 125 (iii)] [Also in Group XXIII] In a flask for applying liquids having a sheet of impermeable and piercable material held over the mouth of the flask and covered by a fabric cap, a thickness of elastic material which permits the passage of the liquid is located between the sheet of impermeable material and the fabric cap 1 an outer cap or'stopper covers the fabric cap and associated parts. As shown the neck 1 of the flask is disposed obliquely with respect to the axis of the body and the mouth of the flask is closed by the sheet 2 of impermeable material, e.g., regenerated cellulose or indiarubber, which is fitted tightly round the neck and is pierced by one or more pinholes before the flask is used. The sheet 2 is covered by a fabric cap 3 secured by a split ring 4 and an elastic fitting 11, e.g., of sponge rubber, is held between the sheet 2 and cap 3. The flask has a flat surface 7 on the side opposite the mouth of the neck 1 which preferably projects beyond the side opposite the surface 7. In a modification the cap is secured on the neck by a removable ring which covers the edge of the cap and in further forms the edge of the cap is stuck to the threads on the neck of the flask or to the cylindrical portions of the sheet 2 on the neck of the flask.
Patent GB-445956-A (GB)
Title: Improvements in and relating to fog lights primarily for vehicles
IPC: F21S8/10
Filed: 1934-11-29
Abstract: 445,956. Vehicle &c. lamps. GALSWORTHY, S. S., 16, Newman Street, Oxford Street, and LEES, J. M., 1, Ullysees Road, Kilburn, both in London. Nov. 29, 1934, No. 34321. Drawings to Specification. [Class 75 (iv)] An anti-dazzle or fog-penetrating device for a vehicle or like lamp comprises a light-pervious screen presenting a plurality of coloured concentric rings of red, yellow, and orange, or red and orange, or such colours predominating, with or without uncoloured rings. Two examples are described and illustrated in the Specification. The screen may be made of glass, celluloid, or fabric, and it may be built up from separate pieces fitted together, or a single base may be coloured as by spraying, painting, or printing. The colouring solutions may consist of a cellulose solvent and dyes mixed with alcohol for a celluloid base, or hydrofluoric acid and aniline dyes mixed with alcohol for a glass base.
Patent GB-974500-A (GB)
Title: Improvements in or relating to processes for winding and doffing bobbins
Inventor: MANSFIELD DAVID FRANCIS GILBER
IPC: D01H1/36
Filed: 1961-09-26
Abstract: 974,500. Spinning apparatus. BRITISH NYLON SPINNERS Ltd. Sept. 12, 1962 [Sept. 26, 1961], No. 34358/61. Heading D1D. A process for winding yarn and for doffing a package so formed on a ring-spinning apparatus, comprises the following steps: winding initial lengths of yarn on a waste-spool below the bobbin; winding spaced turns of yarn in the form of a helix on the lower end portion of the bobbin; completing the main package which is thus connected by the helical turns to the yarn on the waste spool; and lifting the bobbin so that the yarn in the lower of the helical turns is automatically trapped in a slot formed in a radial projection from the surface of the bobbin itself, or formed between such a projection and the surface of the bobbin, the line of direction of the slot towards its open end being such as to intersect the line of direction of yarn in said turns. A package is thus produced having a transfer tail comprising the spaced helical turns on the lower end portion of the bobbin, of the same direction of winding as that of the coils on the package which turns are secured by the lowermost one being trapped in the slot. A number of ways in which the slots may be formed are described (Figs. 2. 4, not shown). In the case of allmetal bobbins or those comprising a sleeve on a metal core, a band of metal, plastic or rubber is sprung over the base of the bobbin, the band having slots or notches to form projections which stand away from the band. Bobbins comprising plastic or cardboard sleeves can have a strip or stick inserted between the sleeve and the core, each strip having a slot extending over half its width and being bent upwardly to stand away from the bobbin; or the sleeve itself may be made with a projection or projections notched or slotted as in the foregoing examples and bent over to extend upwardly or downwardly and to stand away from the bobbin. In a combined stretching and winding operation,the yarn is anchored by winding a few turns around the spindle. One bobbin is donned, and the ring, which may be controlled by an automatic bunch-winder, remains stationary long enough for off-standard yarn to be wound on a waste-spool 25, Fig. 6. The ring then rises, and winds a transfer-tail 45 over the waste-spool and the lower portion of the bobbin, the projection 43 being shielded by the wall of the spool 25. The main wind then takes place; when it is completed, the ring is lowered to the wastespool position causing a widely-spaced helix 51 to be wound over the lower part of the package and then over the turns 45. The bobbin is now lifted for doffing, Fig. 7, so that the turns 45 and 51 unwind somewhat in opposite directions and one turn of the spiral 45 becomes trapped in the slot in a band 49. The yarn is then cut and the loose end is secured in the slot.
Patent GB-375203-A (GB)
Title: An improved process and apparatus for the manufacture of smoke and fog filters
IPC: A62B23/00
Filed: 1931-12-11
Abstract: 375,203. Respiratory appliances. DRAGER, B., 4, Strasse Luterana, Brasov, Rumania.-(Assignee of Dragerwerk H. u. B. Drager; 53, Moislinger-Allee, Lubeck, Germany.) Dec. 11, 1931, No. 34409. Convention date, March 12. [Class 81 (ii).] To assist the filling of a smoke or fog filter container a with fibres carried by an air current, a temporary extension c is fitted. The fibres are afterwards pressed down by a plunger &c., the container is closed by a sieve or perforated screen, and the extension removed. Specification 362,064 is referred to.