baber/WOPTO huggingface dataset:
Patent GB-1383621-A (GB)
Title: Apparatus for detecting the fundamental frequency of a speech sound
IPC: G10L25/90
Filed: 1973-03-06
Abstract: 1383621 Excitation frequency detector INTERNATIONAL BUSINESS MACHINES CORP 6 March 1973 [28 March 1972] 10914/73 Heading H4R Fundamental frequency of a speech signal is determined by sampling the speech signal and generating digital values representative of each sample, determining the absolute value of the difference between each successive pair of sample values, continuously summing the absolute differences to obtain for each sample "i" a function "S(i)" and detecting variations in the slope of that function to indicate the time at which the mouth cavities are excited, i.e. the time at which differences between successive sample values start to increase after a period in which they have been decreasing. As described speech is sampled at 100 Ásec intervals and digitally coded in pcm coder 1. Differences between successive samples are provided by subtractor 7 fed directly from coder 2 on one input and via a one sample period delay 4 on the other input. The absolute value of the difference is provided by unit 10. Adder 11 and register 13 enable a running total to be provided for the absolute differences, while shift registers 17 and 19, both of which provide twenty sample periods delay, allow the comparison, in subtractors 20 and 21, of the running totals at three sampling points spaced twenty sampling periods apart, to give an indication of the slopes before and after the middle sampling point. The slopes are compared in subtractor 23 to provide on line 26 the magnitude of the difference in slopes, and on line 27 the sign of the difference in slopes. When line 27 is positive, corresponding to an increase in slope of the sum of the difference signals which occurs at the commencement of the excitation period, AND gate 28 is enabled passing the signal on line 26 to line 29. The slope difference signal is filtered in digital filter 30, to remove small high frequency variations, and applied to comparator 44 and register 42, via AND gate 43 which is enabled only when the comparator 44, which compares current slope and the slope stored in register 42, provides an output indicating that the current slope is larger than the stored slope. When the opposite condition occurs the value then stored in register 42 is held and the comparator 44 output signal is fed through inverter 47, and gate 48 to bi-stable circuits 52, 53, to produce a short pulse on the output of AND gate 57 indicating the start of the excitation period. When the sign of the slope difference signal on line 49 first goes positive, prior to the commencement of an excitation period, the register 42 and bi-stable 52, 53, are reset ready to detect the following maximum slope difference indicating start of the excitation period. The units shown dotted are provided to give a variable threshold to the maximum slope difference value detector by enabling and gate 48 only when the maximum detected by the comparator 44 bears a predetermined relation, e.g. more than half, the previous maximum detected.
Patent GB-1311421-A (GB)
Title: Melamine moulding composition
IPC: C08L61/28
Filed: 1971-04-23
Abstract: 1311421 Melamine - formaldehyde - filled moulding compositions STANDARD OIL CO 23 April 1971 [24 April 1970] 10947/71 Heading C3R A moulding composition is prepared by mixing a filler with a resinous melamine-formaldehyde, syrup, drying the mixture and mixing it with 1-50 wt. per cent of the total composition of the same dried mixture which has been cured and pulverized, as reactive filler. In examples a resin syrup is prepared from melamine and formaldehyde in 1 : 2À2 molar ratio; it is mixed with alpha cellulose and dried to give "popcorn", which is then ground; some of this powder is mixed with Zn stearate, phthalic anhydride and TiO 2  to give a standard moulding powder; the standard moulding powder is cured, by heating at 345‹ F. at 2000 p.s.i. for 3 mins. (Example 2), or by radio-frequency heating (Example 7), and ground to below 100 micron particle size, to give the reactive filler; ground "popcorn" (Examples 2-5, 12 and 13), or standard moulding powder (Examples 7-11) are mixed with the reactive filler to give moulding powders which are moulded and cured at 310‹ F./1400 p.s.i./3 mins. or 345‹ F./ 3000 p.s.i./3 mins.; the powders may also contain carbon black. A urea-formaldehyde or phenol-formaldehyde resin may be used instead of part or all of the melamine-formaldehyde resin of the moulding composition.
Patent GB-776606-A (GB)
Title: Improvements in or relating to centrifugal compressors
Inventor: WILDE GEOFFREY LIGHT
IPC: F04D17/02
Filed: 1954-04-14
Abstract: 776,606. Centrifugal compressors. ROLLSROYCE, Ltd. May 6, 1955 [April 14, 1954], No. 11082/54. Class 110 (1). A centrifugal compressor comprises an impeller of the kind in which the hub/tip ratio of diameters of the impeller vanes is 0.50 or less at the impeller eye, the Mach number of the incident stream at the vane tips in the impeller eye is at least 0.85 under maximum rotational speed static conditions at sea level, and the maximum peripheral speed at the impeller outlet tip exceeds 1500 feet per second under the same conditions, and an axial-flow stage immediately at the entry to the impeller vanes, the axial-flow stage comprising a row of rotor blades followed by a row of stator blades. The compressor shown, which forms part of a jetpropulsion gas turbine engine, comprises a double-sided centrifugal impeller 10, preceded on each side by toroidal inlet shoots 13, fixed inlet guide vanes 14, and axial-flow rotor blading 15 and stator blading 16. The leading edges of the centrifugal impeller vanes 11, which are shaped to give the necessary entry angles, may be formed as separate rotating guide vanes. The rotor blades 15, which have a hub/tip ratio of about 0.4 at their inlet edges, may be pivoted, as shown, on a ring 20 splined to the rotor shaft 21. Annular swellings 12a may be provided, each affording a rib 18 and shoulders 17 to locate the roots of the blades 16.
Patent GB-694499-A (GB)
Title: Improvements relating to the processing of fabric
Inventor: PENTECOST ALAN JAMES
IPC: D06C5/00
Filed: 1950-05-05
Abstract: 694,499. Drying tubular fabrics. HICKLING, PENTECOST & CO., Ltd. May 4, 1951 [May 5, 1950], No. 11108/50. Class 34 (i) [Also in Group VIII] Tubular fabric 4 is passed over a stretching device and heated air is supplied to the exterior of the fabric, in the neighbourhood of the stretcher, so as to pass inwards. A cylindrical housing 1 is fixed to a support 2 and is divided by an annular partition 14 into parts 1b, 1c, and is inturned at its lower end 3 to form an inlet opening for the fabric. The upper part 1b contains a perforated cylinder 16 secured at its lower end to partition 14. There are also an upper ring 10 and lower ring 11 the upper having a groove to take a cover plate 12. A hot air inlet 17a communicates with the upper part of the box 1 and inside the cylinder 16 is a stretcher 5 comprising rings 8 joined on the inside by members 7. The fabric is threaded over the stretchers 5 and then passes upwardly to rollers 22 and take-up roller 23 or a folding device (not shown). Hot air supplied from a chamber 18 passes through pipe 17 to inlet 17a and the upper compartment 1b where it passes through gauze 16a and the cylinder 16 and through the fabric into the interior thereof whence it passes back through the fabric into compartment 1c and either to waste through opening 3 or through an outlet 21 for re-heating and re-circulation.
Patent GB-1349702-A (GB)
Title: Rotary furnace with multiple cooling tubes
IPC: F27B7/40
Filed: 1972-03-09
Abstract: 1349702 Planetary coolers for rotary kilns POLYSIUS AG 9 March 1972 [10 March 1971] 11117/72 Heading F4B  In a rotary furnace arrangement 1 equipped with planetary cooling tubes 4, a frusto-conical enlargement is disposed at the outlet end of the furnace and directly communicates with the said tubes 4 through an annular end wall 3. In another embodiment, the supporting tube 6 is missing, and the outlets of the tubes 4 extend toward the inlet end of the rotary furnace (see Fig. 8, not shown).
Patent GB-184837-A (GB)
Title: Method for use in milling flour
IPC: B02C9/04
Filed: 1921-04-18
Abstract: 184,837. Woolcott, A. W. April 18, 1921. Reduction processes; treating with air, and by damping.-The machines employed in flour milling are supplied with air which has been purified and the supply to each machine separately moistened. A fan 3 draws air through an air-purifier 1 and delivers it to trunks 4, 10 leading to the roller-mills 6 and to the reels 12, a supplementary exhaust fan 9 and pressure release valve 71 being provided for the roller mills. A trunk 15 leads from the air-purifier 1 to the purifiers 17, through which air is drawn bv fans 19. Air is drawn from the trunk 2 by a pump 29 and forced with water from the pipes 36, 47 through injectors 38, 43 in the air pipes leading to each machine. The injectors can be separately controlled so that the moisture can, for instance, be cut off entirely from one machine, or gradually increased from the first break rolls to the last reduction rolls. The airpurifier 1 consists of a chamber fitted with waterspraying devices 61, 62, Fig. 2, between which the air passes. The water falls into a receptacle 52 from which it is drawn by the pump which supplies the spraying-devices, the level being maintained constant. A steam-pipe 65 may be employed for heating the water. Surplus moisture is removed by an " eliminator " 64<a> consisting of a number of vertical parallel zig-zagged or corrugated plates separated by a wire screen 64 from the purifier. In the outlet chamber 44, water and air pipes 45, 46 fitted with atomizers 49 may be arranged to moisten the whole of the purified air. A bleaching or sterilizing agent may be supplied by means of a pipe 69 from a tank 68.
Patent GB-142125-A (GB)
Title: Process of producing imitations of expensive wood veneers from common woods
IPC: B44F9/02
Filed: 1920-04-22
Abstract: 142,125. Deutsche Gasgluhlicht Akt.- Ges. (Auerges.), (Assignees of Friesecke, E.). Aug. 6, 1914, [Convention date]. Void [Published under Sect. 91 of the Act]. Veneers to imitate expensive woods are cut from blocks formed by piling together glued veneers h of common woods and pressing them between dies a composed of offset stepped portions respectively shaped to give the required grain effect, so that parts of the different layers of veneer are sheared into the planes of neighbouring veneers. The veneers before being pressed together may be variously coloured, and are saturated with a solution of potassium bichromate before being glued.
Patent GB-1092606-A (GB)
Title: Continuous production of expanded styrene polymers
Inventor: WILLERSINN HERBERT
IPC: C08F12/08
Filed: 1965-03-17
Abstract: Expanded styrene polymers are produced by mixing styrene, or a mixture of at least 80% by weight of styrene with at least one other anionically polymerizable unsaturated monomeric compound, with an organo-alkali metal catalyst and such an amount of dimethyl ether and/or tetrahydrofuran and/or dioxane, in the absence of water and oxygen, that the heat of polymerization liberated during the polymerization of the monomers is sufficient to heat the polymer to a temperature above its softening point and to evaporate the ether, and the polymer obtained is then homogeneously mixed with 2 to 15% by weight of an easily volatile organic halogen compound or a mixture of an easily volatile aliphatic hydrocarbon and a small amount of a compound which will deactivate the organo-alkali metal catalyst, at temperatures above the softening point of the polymer, and the pressure is released.  Suitable catalysts are naphthalene sodium, phenyl sodium and butyl lithium, and suitable expanding agents are methyl chloride, propane and butane, the hydrocarbons being used in conjunction with, e.g. oxalic acid or ethylene glycol.  Other monomers suitable for copolymerization with the styrene are vinyltoluenes, 1,3-butadiene and isoprene.
Patent GB-1126541-A (GB)
Title: Dual hub for reels
IPC: B65H18/02
Filed: 1966-03-15
Abstract: 1,126,541. Mounting record-tape reels. MINNESOTA MINING & MFG. CO. 15 March, 1966 [15 March, 1965], No. 11359/66. Heading G5R. A dual hub assembly comprises axiallyshaped coaxial inner and outer hubs 16, 20 for receiving inner and outer reels 10 respectively, both hubs being provided at their inner ends with radially extending support means 38, 58 adapted to abut the inner faces of the reels and the support means 58 of the outer hub 20 being radially retractable to permit the inner reel to pass over the outer hub. As shown, withdrawal of a plunger 65 allows springs 62 to retract the reel-supporting pins 58. Each hub 16 or 20 comprises an inner portion 28 or 32 and an outer portion 30 or 34, the two portions being urged apart axially by a spring 54 so that each reel 10 is normally held on its hub by the wedging action of balls 50, contained in apertures 48 in the outer portion of the hub, between the reel and a conical collar 42 on the inner portion of the hub. Pressure on the outer face of the outer hub 20 releases first the outer and then the inner reel (Figs. 6 to 8).
Patent GB-527732-A (GB)
Title: Improvements in or relating to high-speed motor-boats
IPC: B63B3/00
Filed: 1939-04-14
Abstract: 527,732. High-speed motor-boats. PAINE, H. SCOTT-. April 14,1939, No. 11407 [Class 114] In a high-speed motor-boat having three or more closely-grouped engines 18, 19, spaced athwartships, and driving propellers 10, 11, beneath the boat, the outermost engines 19 are arranged aft of the others 18, and each of the outermost engines has the forward end of its driving shaft connected through gearing 15 with a rearwardly and downwardly inclined propeller shaft 14. The rearward end of the driving-shaft of each of the inner engines 18 is connected with a rearwardly and downwardly inclined propeller-shaft 17. Such gear 15 has its input shaft above the output shaft so that the propeller-shaft 14 lies beneath the engine 19. In the case of a three engined vessel the central engine is arranged on the fore-and-aft centre line of the boat.
Patent GB-114821-A (GB)
IPC: F28D1/04
Abstract: 114,821. Jezler, H. April 7, 1917, [Convention date]. Addition to 111,478, [Class 29, Cooling &c.]. Couplings, disconnectible.-In motor-car and like radiators having separately removable sections c as described in the parent Specification, the screw unions d coupling the branches v of the sections to the tank bare formed with lateral apertures 9, Fig. 3, so that the sections may be readily inserted laterally. The unions d are provided with a groove d<11> to receive the flange of the branch v and prevent displacement. The packing-ring r is provided with a metal reinforcement extending in the form of a tube p into the tank branch to ensure correct seating.
Patent GB-582029-A (GB)
Title: Improvements relating to the preparation of dispersions
IPC: C09D7/80
Filed: 1944-06-16
Abstract: Coating compositions are made from a film-forming agent, which is not readily wetted by the dispersion medium and is not melted at the temperature of the dispersion medium at the time of admixture, by damping the film-forming agent, before admixture with the dispersion medium, with a liquid which is a non-solvent for the film-forming agent and is volatilized at the temperature of the dispersion medium at the time of admixture.  The process may be applied to the production of hot-melt coating compositions. For example, a plasticizer is heated to 160 DEG  C. and ethyl cellulose damped with normal heptane is added with stirring.  When the ethyl cellulose is dissolved, resin and wax are added.  The process may be applied to the manufacture of dispersions of ethyl cellulose, or a copolymer of vinyl acetate and vinyl chloride using petroleum ether, benzine or iso-octane as damping agent, of dispersions of a copolymer of vinyl acetate and vinyl chloride using ethyl alcohol or carbon tetrachloride as damping agent.ALSO:Coating compositions are made from a film-forming agent, which is not readily wetted by the dispersion medium and is not melted at the temperature of the dispersion medium at the time of admixture, by damping the film-forming agent, before admixture with the dispersion medium, with a liquid which is a non-solvent for the film-forming agent and is volatilized at the temperature of the dispersion mixture at the time of admixture.  The process may be applied to the manufacture of dispersions of chlorinated rubber using petroleum ether, benzine, iso-octane or ethyl alcohol as the damping agent.
Patent GB-1041455-A (GB)
Title: Improvements in shaft sinking
IPC: E21D1/14
Filed: 1964-03-19
Abstract: 1,041,455. Tunnelling. M. MAUCLET. March 19, 1964 [April 5, 1963], No. 11625/64. Heading E1F. A tunnel or a vertical shaft is bored by apparatus comprising a plurality of relatively movable telescopic caissons A, B and a shield C, mounting respectively freezers or injection needles 1, 2, 3 and means 4, 5 to drive them into the ground. Fig. 5 shows the apparatus with freezers 1, 2, 3 all driven into the wall of a shaft 10 and connected to refrigerant supply 7, packing 11 sealing between freezers. Freezers 1 and 2, 3 are of different design (Figs. 3, 4, not shown), freezers 1 freezing on their whole length, freezers 2, 3 at their ends only, and a basinshaped frozen mass D is formed whose thickness is controlled by pressure sensitive devices 12. Shield C is then opened, the non-frozen ground within basin D cut away (Fig. 6, not shown), caisson B advanced into the cavity by hydraulic jacks bearing on caisson A, and shield C re-closed (Fig. 8, not shown). Hot water is subsequently passed through the freezers and caisson A advanced by jacks (14) (Fig. 9, not shown), bearing on the opposite wall of shaft 10. As further steps are performed, caisson A is sealed by packing (16) to a lining (15) which is formed in the tunnel being driven (Fig. 10, not shown). Instead of freezing the ground, needles 1, 2, 3 may inject cement or bitumen. Drills may form holes for needles or freezers 1, 2, 3 in ground too hard for cylinders 4, 5 to advance them. Three or more telescopic caissons may be employed.
Patent GB-278613-A (GB)
Title: Improvements in means for supplying water to rock-drills and the like
IPC: E21B21/02
Filed: 1927-05-02
Abstract: 278,613. Stuthridge, J. H., and Hack, T. M. May 2, 1927. Percussive tools.-Hollow rock-drills and the like are supplied with water through an orifice 14 arranged between rubber packing rings 21, 22, with or without springs 37, mounted in a casing 23 of brass or like material which rotates with the drill steel the rings being protected by antifriction washers 30 of vulcanite, phosphor bronze, or other material from the end walls of the outer casing 1, which is closed by a screwed cap 6 and is mounted on the front head. Water enters this casing by an inlet 17 and passes to the opening 14 through holes 27, and to the packing rings through holes 28. A liner may be fitted to the cap 6, and the inner casing may be formed in three sections, in which case flanges on the outer sections may be arranged to replace the antifriction washers 30.
Patent GB-289468-A (GB)
Title: Improvements relating to the compensation of expansion and contraction in mechanism subject to temperature variations
IPC: F01L1/245
Filed: 1928-04-20
Abstract: 289,468. Almen, J. O. April 28, 1927, [Convention date]. Valve gear.-To compensate for heat expansion in valve gear, the valve rocker 12 is mounted on an eccentric 20, the angular position of which is controlled by an hydraulic abutment, Fig. 3. An arm 22 on the eccentric bears against a plunger 24 working in an hydraulic chamber 32 and pressed upwards by a spring 38. When the engine becomes hot, the eccentric 20 rotates slightly and forces the plunger 24 downwards, oil passing out of the chamber 32 through passages 36 and past the clearance around the plunger. As the parts cool, the spring 38 returns the plunger, the oil returning through a passage 30 and past a valve 34. In a modification, the eccentrically-mounted rocker is arranged between the cam and tappet; or the cam shaft may be mounted in adjustable eccentric bearings. Oil may he supplied to the chamber 32 from the lubricating-pump, and the plunger may be replaced by a diaphragm. A crank device may be used instead of the eccentric.
Patent GB-1467422-A (GB)
Title: Stabilization of whipping cream
IPC: A23C13/12
Filed: 1974-04-02
Abstract: 1467422 Stabilizing whipping cream NORTHERN FOODS Ltd 2 April 1974 [10 March 1973 3 July 1973] 11699/73 and 31676/73 Heading A2B Whipping cream (=40% fat content) is stabilized by dispersing a stabilizer using high shear agitation into one or more of separated milk, milk, low (i.e. <10%) fat cream or water and blending the stabilized low fat substance with a high fat whipping cream. The stabilizer is preferably one of gelatine, carboxymethyl cellulose, caregheenan, alginate or xanthan gum used in amounts of less than 0.3% by wt. The high fat cream may be raw or pasteurized and after addition of the stabilized substance the cream may be further pasteurized and then cooled. The most preferred stabilizer is xanthan gum and a cream stabilized with this is claimed per se.
Patent GB-112110-A (GB)
Title: Improvements in and relating to Elastic Couplings.
Inventor: CARTER GEORGE
IPC: F16D3/58
Filed: 1917-08-15
Abstract: 112,110. Carter, G. Aug. 15, 1917. Universal couplings. - In an elastic coupling, flexible links 5, formed by flattening sleeves of rubber, fabric, leather, &c., are held on pins in gaps in circular flanges 3, 4 on one member 1 of the coupling, and are embraced by gaps 12 in a circular flange 11, or by other means, on the other member 2. The pins 10 on which the links are placed may be fixed on the member 1, or be loose, and they expand the links against the jaws 8, 9 to distribute the strain.
Patent GB-1119760-A (GB)
Title: Improvements in moulds for the preparation of ice lollipops
IPC: A23G9/22
Filed: 1967-03-14
Abstract: 1,119,760. Freezing moulds. E. PONS. 14 March, 1967 [16 March, 1966], No. 11799/67. Heading F4H. [Also in Division B5] An ice lollipop mould A has a flexible cover B which is formed with a central apertured boss 4 for holding a stick C. The assembled mould is watertight and thus may be placed on its side in the freezer compartment of a domestic refrigerator. The mould is made of metal and the cover of rubber or plastics. The projecting end of the stick is preferably made narrower and thinner than the remainder to facilitate removal of the cover.
Patent GB-436870-A (GB)
Title: High frequency signalling systems
IPC: H04J1/00
Filed: 1934-04-19
Abstract: 436,870. Two - way transmission. STANDARD TELEPHONES & CABLES, Ltd., 63, Aldwych, London.-(Assignees of Wilson, I. G. ; 35, Pierrepont Street, Brooklyn, New York, U.S.A.) April 19, 1934, No. 11803. Convention date, June 1, 1933. [Class 40 (iv)] [See also Group XL] Single-channel loaded voice frequency lines 11 ... 14 are paired with multiplex non- loaded carrier lines 10, 20 for four-wire working. The carrier lines are preferably spaced apart in the cable so as to be shielded from each other by a number of voice-frequency lines.
Patent GB-259631-A (GB)
Title: Improvements in and relating to fermentation processes for the production of n-butylalcohol and acetone
IPC: C12P7/28
Filed: 1925-05-06
Abstract: 259,631. Desborough, A. P. H., Thaysen, A. C., and Green, B. M. May 6, 1925. Acetone.-In a fermentation process for the production of n-butyl alcohol and acetone from Jerusalem artichokes the fermentation is carried out in a mash, of 20-30‹ per cent strength, formed by diluting a 50 per cent mash after hydrolysis of the carbohydrates therein, as by boiling with 0.2 per cent of sulphuric acid.